MOUNTING SYSTEM FOR ELEVATING PLATFORM
20170356595 · 2017-12-14
Assignee
Inventors
- Ryan J. McKinney (Parkville, MO, US)
- Kyle E. Hoffmann (Saint Joseph, MO, US)
- Jace Hegg (St. Joseph, MO, US)
Cpc classification
B66F11/044
PERFORMING OPERATIONS; TRANSPORTING
F16M13/02
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
International classification
F16M13/02
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Abstract
Mounting plates for elevating platforms, including a mounting plate with interior and exterior reinforcement pieces elongated vertically and with rounded corners; a single-piece mounting plate inserted through slots in the platform wall; and a single-piece mounting plate with top and side tabs that wrap around the platform exterior to transform tension stress into shear stress.
Claims
1-18. (canceled)
19. A mounting plate for an elevating platform with a sidewall comprising: an exterior reinforcement piece, and at least one fastener; wherein the exterior reinforcement piece is positioned on the exterior of the sidewall; and wherein the at least one fastener is partially inside of the platform and is inserted through the sidewall and through the exterior reinforcement piece.
20. The mounting plate of claim 19, wherein the at least one fastener is a mounting stud.
21. The mounting plate of claim 19, wherein a portion of the exterior reinforcement piece is in compression with the platform sidewall when a vertical load is applied.
22. The mounting plate of claim 19, further including a dielectric cover positioned over a head of the at least one fastener, wherein the dielectric cover is a non-conductive material.
23. The mounting plate of claim 19, wherein the mounting plate is made from reinforced thermosets, unreinforced thermosets, reinforced thermoplastics, and/or unreinforced thermoplastics.
24. The mounting plate of claim 19, further including an interior reinforcement piece wherein the interior reinforcement piece is positioned on the interior of the sidewall.
25. The mounting plate of claim 24, wherein the mounting plate is made from reinforced thermosets, unreinforced thermosets, reinforced thermoplastics, and/or unreinforced thermoplastics.
26. The mounting plate of claim 24, wherein the height-to-width ratio of the reinforcement pieces is between about 3 and about 6.
27. The mounting plate of claim 24, wherein the exterior reinforcement piece includes a top and a bottom, with the bottom wider than the top; and wherein the interior reinforcement piece includes a top and a bottom, with the top wider than the bottom.
28. The mounting plate of claim 27, wherein the bottom of the exterior reinforcement piece is between about 50% and about 100% wider than the top and the top of the interior reinforcement piece is between about 50% and about 100% wider than the bottom.
29. The mounting plate of claim 24, wherein the at least one fastener is inserted through the interior reinforcement piece on the inside of the platform, through the sidewall, and through the exterior reinforcement piece on the outside of the platform.
30. The mounting plate of claim 29, further including a dielectric cover positioned over the interior reinforcement piece and a head of the at least one fastener, wherein the dielectric cover is a non-conductive material.
31. The mounting plate of claim 29, wherein the at least one fastener is a mounting stud and the at least one fastener is embedded in the interior reinforcement piece.
32. The mounting plate of claim 31, wherein a portion of the interior reinforcement piece is in compression with the platform sidewall when a vertical load is applied.
33. A mounting plate for an elevating platform with a sidewall comprising: an interior reinforcement piece, and at least one fastener; wherein the interior reinforcement piece is positioned on the interior of the sidewall; and wherein the at least one fastener is partially inside of the platform and is inserted through the interior reinforcement piece and the sidewall.
34. The mounting plate of claim 33, wherein the at least one fastener is a mounting stud and the at least one fastener is embedded in the interior reinforcement piece.
35. The mounting plate of claim 33, further including a dielectric cover positioned over a head of the at least one fastener, wherein the dielectric cover is a non-conductive material.
36. The mounting plate of claim 33, wherein the mounting plate is made from reinforced thermosets, unreinforced thermosets, reinforced thermoplastics, and/or unreinforced thermoplastics.
37. The mounting plate of claim 33, wherein a portion of the interior reinforcement piece is in compression with the platform sidewall when a vertical load is applied.
38. The mounting plate of claim 37, further including a dielectric cover positioned over the interior reinforcement piece and a head of the at least one fastener, wherein the dielectric cover is a non-conductive material.
39. A mounting plate for an elevated platform with a sidewall and at least one cutout extending through the sidewall comprising: at least two contact zones configured to substantially contact the sidewall on different sides of the sidewall; wherein the at least two contact zones are connected by a transition; wherein at least one contact zone is configured to fit through the at least one cutout in the sidewall; and wherein the two contact zones and the transition of the mounting plate are operable to interlock with the sidewall via the at least one cutout in the sidewall.
40. The mounting plate of claim 39, wherein the mounting plate is made from reinforced thermosets, unreinforced thermosets, reinforced thermoplastics, and/or unreinforced thermoplastics.
41. The mounting plate of claim 39, wherein at least one contact zone contains at least one hole and at least one fastener inserted through the hole to the platform exterior.
42. The mounting plate of claim 41, wherein the at least one fastener includes at least one mounting stud.
43. The mounting plate of claim 39, wherein at least one contact zone contains at least one fastener that is embedded in the at least one contact zone.
44. The mounting plate of claim 43, wherein the at least one fastener includes at least one mounting stud.
45. The mounting plate of claim 39, including at least one inner reinforcement component positioned between the contact zone on the inside of the platform and the sidewall; and wherein the reinforcement component has geometry that conforms to the transition, such that the at least one reinforcement component closes the cutout.
46. The mounting plate of claim 45, wherein the at least one reinforcement component seals the cutout.
47. The mounting plate of claim 46, wherein the at least one reinforcement component includes at least two reinforcement components.
48. The mounting plate of claim 39, including at least one outer reinforcement component positioned between the contact section on the outside of the platform and the sidewall; and wherein the reinforcement component has geometry that conforms to the transition, such that the at least one reinforcement components closes the cutout.
49. The mounting plate of claim 48, wherein the at least one reinforcement component seals the cutout.
50. The mounting plate of claim 49, wherein the at least one reinforcement component includes at least two reinforcement components.
51. A support for mounting components to a container with a bottom and a first wall, the first wall having a main contact surface and a projection that projects out of the main contact surface, the support comprising: a front, a back, a bottom edge, at least two side edges, a main support component, a top edge, and means for attaching components to the main support component; and wherein the main support component is configured to substantially contact the main contact surface of the first wall of the container.
52. The support of claim 51, wherein at least one side edge and/or the bottom edge is tapered or stepped.
53. The support of claim 51, wherein the container further includes a second wall and the support further includes a first side tab along a first side edge of the support, wherein the first side tab is configured to substantially contact the exterior of the second wall of the container, the second wall non-coplanar with the first wall, thereby transforming the tension stress to shear stress and compression stress along the first side edge of the support when the support is chemically bonded, physically bonded, and/or mechanically attached to the container.
54. The support of claim 53, wherein the container further includes a third wall and the support further includes a second side tab along a second side edge of the support, wherein the second side tab is configured to substantially contact the exterior of the third wall of the container, the third wall non-coplanar with the first and/or second walls, thereby transforming the tension stress to shear stress and compression stress along the second side edge of the support when the support is chemically bonded, physically bonded, and/or mechanically attached to the container.
55. The support of claim 51, wherein the means for attaching components to the main support component are mounting studs embedded in the main support component.
56. The support of claim 51, wherein the support is a mounting plate, the container is an elevating platform with sidewalls, a top flange and a bottom, and the projection is the top flange.
57. The support of claim 51, wherein the support top edge includes a tab.
58. The support of claim 57, wherein the tab on the top edge is configured to substantially contact the projection of the container, thereby transforming the tension stress along the top edge of the support into shear stress and compression stress when the support is chemically bonded, physically bonded, and/or mechanically attached to the container.
59. The support of claim 57, wherein at least one side edge and/or the bottom edge is tapered or stepped.
60. The support of claim 57, further including a first side tab along a first side edge of the support, wherein the first side tab is configured to substantially contact the exterior of a second wall of the container, the second wall non-coplanar with the first wall, thereby transforming the tension stress to shear stress and compression stress along the first side edge of the support when the support is chemically bonded, physically bonded, and/or mechanically attached to the container.
61. The support of claim 57, wherein the container includes a second wall and the support further includes a second side tab along a second side edge of the support, wherein the second side tab is configured to substantially contact the exterior of a third wall of the container, the third wall non-coplanar with the first and/or second walls, thereby transforming the tension stress to shear stress and compression stress along the second side edge of the support when the support is chemically bonded, physically bonded, and/or mechanically attached to the container.
62. The support of claim 57, wherein the support is made from reinforced thermosets, unreinforced thermosets, reinforced thermoplastics, and/or unreinforced thermoplastics.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION
[0119] Clear Platform
[0120] Typical prior art platforms are opaque and an operator cannot see through them. If the platform is being used in a tight space or the operator needs to see what is just outside the platform, the clear platform increases the operator's visibility of his surroundings. When a platform is opaque there is an increased probability of the operator striking an object with the platform because of reduced visibility.
[0121] Referring now to the drawings in general, the illustrations are for the purpose of describing a preferred embodiment of the invention and are not intended to limit the invention thereto.
[0122] The invention is directed to elevating platforms with walls, panels, knee spaces, floors, doors and combinations thereof made of clear or transparent and/or translucent materials to provide high visibility to the operator. The platform is constructed using optically clear or translucent materials, either in strategic locations or having an entirely clear platform, thereby giving the operator enhanced visibility around the platform, resulting in better performance. The present invention also increases operator safety and extends the life of platforms by making it easier for the operator to avoid running the platform into objects.
[0123] The present invention provides for different combinations of materials to achieve the enhanced visibility. Some example configurations are as follows: Using a standard, opaque fiberglass platform, generally described as 100 in
[0124] The clear materials are attached to a typical fiberglass platform by adhesive bonding, mechanical fastening, and combinations thereof. If the fiberglass platform is made to be clear, a resin is chosen to match the reflectance and refractive index of the glass, resulting in a composite laminate that is optically clear and with similar image displacement as glass. The clear material has a refractive index of between about 1.3 and 1.7, a reflectance between about 70 and 100, negligible scattering and negligible absorbance.
[0125] For translucent designs, the translucent material is preferably between about 30% and about 70% light transmission. More preferably, the % light transmission is about 40-60%. In another embodiment, the % light transmission is about 50%. An example preferred embodiment is white polycarbonate with a % light transmission of between about 30% and about 70%. The make and model of an example preferred white translucent polycarbonate is Sabic Lexan XL102UV.
[0126] Alternatively, a fiber reinforced thermoset resin with a clear gel coat may be used to produce an entirely translucent platform structure. Translucent components such as panels, knee spaces, and doors could then be attached to the translucent platform structure. These translucent components may be made from Polycarbonate, Acrylic, Nylon, Polypropylene, fiber reinforced thermosets, and unreinforced thermosets.
[0127] Alternatively, polycarbonate, acrylic, nylon, polypropylene, fiber-reinforced thermosets, and unreinforced thermosets may be used to produce an entirely translucent platform.
[0128] In another alternative embodiment, a platform structure is made with fiberglass, an optically clear thermoset resin, and a translucent gel coat to allow light transmission but maintain privacy.
[0129] Alternatively, a reinforced thermoplastic such as Vectorply EPP-W 1500 or Vectorply EPP-W 2200 may be used to create an entire platform or platform components such as a panel, knee space, or door. The Vectorply products are a fiberglass reinforced polypropylene and they become translucent after they are processed during manufacturing of platforms and platform components.
[0130] In a preferred embodiment, the resins are acrylic-modified resins such as POLYLITE 32030-00 and 32030-10, manufactured by REICHHOLD, Research Triangle Park, N.C., USA. In one embodiment, the acrylic-modified resins include polyester resins. Preferably, the acrylic-modified resins are low-viscosity resins, low-reactivity resins, and UV-stabilized resins. Any clear or translucent thermoplastic or thermoset, impact-resistant polymer, such as polycarbonate, can be used without departing from the scope of the invention.
[0131] The invention is thus directed to an elevating platform with at least one wall; and further including at least one panel, at least one knee space, and/or at least one door. The at least one wall, the at least one panel, the at least one knee space, and/or the at least one door is formed of a clear or translucent material, thereby providing an elevating platform which provides for greater visibility to an operator. In another embodiment, the elevating platform includes at least one clear or translucent section in the at least one wall, wherein the remainder of the at least one wall is constructed out of a different material than the at least one clear or translucent section. The at least one clear or translucent section is attached to the elevating platform by adhesive bonding and/or mechanical fastening. The at least one clear or translucent section is a planar shape or a knee space formed by an outwardly bulbous shape using clear or translucent material. The knee space provides space for at least one knee of a squatting operator. In another embodiment, the entire elevating platform is constructed using fiberglass and a clear or translucent resin system such that the elevating platform is entirely clear or translucent. The clear resin system has a refractive index between about 1.3 and about 1.7. The translucent resin system has a % light transmission of between about 30% and about 70%. The clear or translucent material is fiber-reinforced thermosets, unreinforced thermosets, fiber-reinforced thermoplastics, and/or unreinforced thermoplastics. The translucent resin system is preferably white polycarbonate.
[0132] Platform Step
[0133] The present invention is further directed to a step for use in elevating platforms. Steps are located on the sidewall of a platform, and the operator uses them as an aid to get into and out of the platform. Typical prior art steps have a flange all around the step that is bonded to the outside of the platform wall (
[0134] In an alternative prior art embodiment (
[0135] Both of these embodiments rely on the strength of the adhesive, rather than on the structural strength of the components.
[0136] The present invention eliminates the weakness of the prior art by having both the top and bottom bondlines in compression. As shown in
[0137] Preferably, a second notch 260 is provided on the margin opposite the first notch, such that when the step is centered, a portion of the second side margin extends over the sidewall, covering it. This coverage provides for a seal of the cutout. Some platform assemblies that include a platform step are used with insulating liners and other platform assemblies that include a platform step are not used with insulating liners. According to ANSI A92.2-2015 Section 4.9.5.1, platforms for use with insulating liners shall not have drain holes or access openings. Therefore the platform step cutout must be sealed if the platform is going to be used with an insulating liner. The platform step is fixed to platforms the same way if the platform is or is not going to be used with an insulating liner, therefore the step cutout must always be sealed.
[0138] To mount the step in the cutout (
[0139] Different designs and configurations can be used without departing from the scope of the invention.
[0140] In another embodiment, the invention is thus directed to a step for an elevating platform with a sidewall, the step includes a top flange, a bottom flange, and a transition. The top flange and the bottom flange are joined by the transition; and the step is configured to insert into a cutout in the platform sidewall. The bottom flange is configured to contact an outer surface of the platform sidewall when the top flange contacts an inner surface of the sidewall. In one embodiment, the step includes a first step notch in a first side of the transition, configured such that when the first step notch is inserted into a first cutout notch of the cutout in the platform sidewall, the top flange of the platform step is operable to be inserted into the cutout of the sidewall and the platform step is operable to be pivoted via the first step notch in the first cutout notch such that the top flange contacts the inner surface of the sidewall. Another embodiment includes a second step notch in a second side of the transition; the platform step operable to lock into the elevating platform by positioning the top flange such that the top flange contacts the inner surface of the sidewall, positioning the first step notch in the first cutout notch, and positioning the second step notch in a second cutout notch. The top flange is configured such that when the platform step is locked into the platform sidewall and adhered to the elevating platform with adhesive, the top flange of the platform step covers the cutout, thereby sealing it. The platform step is also configured such that when the platform step is locked into the platform sidewall, the top flange of the platform step compresses the inner surface of the sidewall and the bottom flange of the platform step compresses the outer surface of the sidewall, thus providing compressive bonds between the platform step and the sidewall.
[0141] In yet another embodiment, the invention is also directed to an elevating platform with a cutout to receive the top flange of the step as previously described. The elevating platform includes a first cutout notch configured such that when the first step notch is inserted into a first cutout notch of the cutout, the top flange of the platform step is operable to be inserted into the cutout of the sidewall and the platform step is operable to be pivoted via the first step notch in the cutout notch such that the top flange contacts an inner surface of the sidewall. The elevating platform and step are operable to lock together by positioning the top flange such that the top flange contacts the inner surface of the sidewall, positioning the step notch in the cutout notch, and positioning a second step notch in a second cutout notch. The top flange and the cutout are configured such that when the platform step is locked into the elevating platform and adhered to the elevating platform with adhesive, the top flange of the platform covers the cutout, thereby sealing it. The platform cutout and platform step are configured such that when the platform step is locked into the elevating platform, the top flange of the platform step compresses the inner surface of the sidewall and the bottom flange of the platform step compresses an outer surface of the sidewall, thus providing compressive bonds between the platform step and the sidewall. In one embodiment, the cutout includes a top cutout portion and a bottom cutout portion, wherein the top cutout portion is wider than the bottom cutout portion; and the platform step includes a first side notch and a second side notch. The top flange and the cutout are configured such that when the first side notch is in contact with the first sidewall at the bottom cutout portion, the top cutout portion is operable to receive the top flange. Then, the first side notch and the second side notch are operable to lock into the bottom cutout portion of the cutout, thereby locking the platform step into the elevating platform. The top flange and the cutout are configured such that when the platform step is locked into the elevating platform and adhered to the elevating platform with adhesive, the top flange of the platform step covers the cutout, thereby sealing it.
[0142] Platform Rib
[0143] Currently multiple platform sizes and shapes are manufactured via Light Resin Transfer Molding (LRTM) with molded-in ribs or via hand layup with molded-in ribs. There are several disadvantages associated with this construction. The molded-in ribs necessary to provide structural support are thick, which adds unnecessary weight to the platform. Quality issues related to molded-in ribs occur because this design is difficult to manufacture. For example, it is difficult to spray gel coat in a uniform thickness in the mold rib cavity. It is also difficult to consistently place fiberglass in the mold rib cavity. Some molded-in ribs have foam cores, and gel coat cracking can occur more easily in ribs with foam cores when compressive forces are applied such as when platform mounting studs are tightened.
[0144] Furthermore, platforms can't be stacked during shipping due to the molded-in ribs. The rib cavities in the platform mold suffer damage faster than other areas of the mold. The molded-in ribs are also required to have a slight draft so the platform can be de-molded. It is preferable if the ribs don't have a draft for mounting purposes.
[0145] A minimum of three large objects; plug, master tool, and tool are required to manufacture a platform with a single style of molded-in ribs. For example, the five different styles of 1-man platforms currently offered by Altec, Inc. require eight different plugs, master tools, and tools for a total of 24 large objects. These items take up a lot of storage space. They are also more likely to be neglected because there are so many of them to keep track of. If the 1-man platform was made with pultruded ribs according to the present invention and if it were consolidated to one platform height then it would only require 1 plug, 1 master tool, and 1 tool to produce all of the platform rib styles currently offered.
[0146] The present invention provides for a new elevating platform support system that does not use molded-in ribs, but rather uses externally-applied reinforcement ribs that address the problems described previously. The support system is inherently safer than existing external rib designs because it uses a mechanical interlock that prevents the ribs from separating from the platform if the adhesive between the platform and ribs fails. A critical feature of the mechanical interlock is that part of the rib is inside of the platform and part of the rib is outside of the platform, thus locking the rib into the platform.
[0147] The platform support system, generally described as 300 in
[0148] The example embodiment shown in
[0149] In another preferred embodiment, the ribs are an off-set double-L configuration 314, shown in cross-sectional view in
[0150]
[0151] In a preferred embodiment (
[0152] The T-shaped component 312 is inserted through a slot in the platform wall from the interior of the platform, such that it is extending outward, whereupon the stem of the L-shaped component 314 is bonded to it on the exterior of the platform.
[0153] In another embodiment (
[0154] The example embodiment shown in
[0155] An 8″×4″×⅜″ Series 1500 SuperStructural I-beam manufactured by Creative Pultrusions (Alum Bank, Pa., USA) is cut in half so two “T” shapes existed. Two 0.88″ wide slots are cut in the platform sidewall and the T shapes are bonded to the inside of the platform with a portion of the “T” protruding through the slots in the platform wall. The T-shaped component is 28″ long and the portion that protrudes through the platform wall is 26.25″ long. This design allows the top and bottom of the “T” to completely cover the slot cut in the platform wall to ensure a seal of the cutout. A 3″×3″×0.375″ Series 1500 SuperStructural equal leg angle manufactured by Creative Pultrusions (Alum Bank, Pa., USA) is bonded to the exterior of the platform and to a portion of the T-shaped component that protrudes through the platform wall. The “L” shape is initially 36.5″ long and is cut to taper near the bottom of the platform. The “L” shape preferably extends between about 1 and about 13 inches beyond the bottom of the slot. The “L” is further trimmed so that the portion in contact with the platform is only 2″ wide instead of 3″ wide as it is manufactured. In one embodiment, the portion of the “L” that contacts the platform is trimmed even further when required, such as when the rib is close to the side of the platform and there isn't enough area to bond a 2″ wide portion. The reduced width provides adequate strength while reducing weight and the amount of adhesive required for bonding it to the platform wall. Additionally, a notch 317 is cut into the top of the stem of the T at the top of the T-shaped rib component for the following reasons:
[0156] Whenever material is removed from a component, for example by cutting a slot in it, the physical strength of that component is decreased by some amount. In an effort to minimize the strength reduction caused by the slots in the platform wall there was a desire to maintain as large of a distance as possible between the top of the slot and the platform flange.
[0157] It is desirable for the top of the “T” inside of the platform to completely cover the slot cut in the platform wall. In order to achieve this, the portion of the “T” inside of the platform must extend up past the slot cut in the platform wall. It is important that the upper portion of the “T” inside of the platform, that covers the top of the slot, doesn't extend up past the beginning of the radius where the platform wall transitions to the platform flange. This is important to minimize the interference of the portion of the rib inside of the platform with a platform liner that is inserted into the platform. Some platforms have mounting holes drilled in their ribs near the top of the rib only a few inches below the platform flange. Therefore, it is necessary for the top of the “T” rib on the outside of the platform to be no more than approximately 1.5″ from the bottom of the platform flange.
[0158]
[0159] Another example embodiment, shown in
[0160] Another example embodiment has the arm extending vertically beyond the stem of the T at both ends of the rib. One benefit of this design is that the arm completely covers the slot in the platform wall.
[0161] In another embodiment, the T stem is notched at the top of the rib so that the stem extends vertically beyond the arm while the arm still covers the slot near the top of the platform.
[0162] Yet another embodiment is for a rib that has a stem that extends above the arm at the top of the rib and the arm extends below the stem at the bottom of the rib. This design allows the arm to completely cover the slot in the platform wall while reducing the tendency of the arm to separate from the platform wall near the top of the rib during loading scenarios such as “side push” which occurs when the side of a platform is accidentally pushed into a tree.
[0163] When the stem of the T-shaped portion extends vertically beyond the arm of the T at the top of the rib, this is beneficial during scenarios when a load is being applied to the bottom of the platform (like when the platform is accidentally slammed into the ground). In this scenario, the stem of the T above the arm of the T on the inside of the platform is in compressive contact with the platform wall and this prevents the arm of the T from separating from the inside wall of the platform due to a tension force (i.e., the rib being pushed into the platform near the top of the platform).
[0164] When the stem of the T-shaped portion extends vertically beyond the arm of the T at the bottom of the rib, this is beneficial during scenarios when a vertical load is being applied to the inside of the platform (like when an operator is standing in the platform.) In this scenario, the stem of the T below the arm of the T on the inside of the platform is in compressive contact with the platform wall and this prevents the arm of the T from separating from the inside wall of the platform due to a tension force (i.e., the rib being pushed into the platform near the bottom of the platform).
[0165] In general, when the stem of the T on the outside of the platform extends above or below the arm of the T on the inside of the platform, the stem is allowed to support more force than would otherwise be supported by the arm or by the adhesive. This occurs because the stem has a greater section modulus than the arm.
[0166]
[0167] In another embodiment, a lanyard anchor bracket reinforcement section 325 is attached to rib (
[0168]
[0169] In yet another embodiment, the present invention is directed a T-and-L-shaped rib including a T-shaped portion that has a T-shaped cross-section with an arm and a stem and an L-shaped portion that has an L-shaped cross-section with an arm and a stem; the arm of the T-shaped portion is positioned inside the elevating platform and contacts an inner surface of the sidewall of the platform; the arm of the L-shaped portion is positioned outside the elevating platform and contacts an outer surface of the sidewall; the stem of the T-shaped portion extends through the sidewall slot and the stem of the L-shaped portion is external to the sidewall and extends beyond the top and bottom of the sidewall slot; and the stems of the T-shaped and L-shape portions are adhered to each other. In one embodiment, this rib further including a notch in the top of the rib in the stem of the T-shape portion at the conjunction of the stem and the arm; the notch configured such that the arm and the stem of the T-shape slide over the sidewall via the notch. Preferably, the arm of the T-shaped portion extends vertically beyond the sidewall slot at both ends when installed in the elevating platform and the the L-shaped portion extends between about 1 and about 13 inches beyond the bottom of the slot. The rib is preferably formed of fiber-reinforced thermosets, unreinforced thermosets, fiber-reinforced thermoplastics, and/or unreinforced thermoplastics.
[0170] Another rib according to the present invention is a double-L-shaped rib including a first L-shaped portion and a second L-shaped portion, both portions having an L-shaped cross-section with an arm and a stem; the arm of the first L-shaped portion contacts an outer surface of the sidewall of the platform and the arm of the second L-shaped portion contacts an inner surface of the sidewall; the arm of the second L-shaped portion extends vertically beyond the sidewall slot at both ends; the stem of the second L-shaped portion extends through the sidewall slot and the stem of the second portion is external to the sidewall; and the stems of the portions are adhered to each other or the rib is pultruded. In one embodiment, the arm of the second L-shaped portion extends vertically beyond the sidewall slot at both ends when installed in the elevating platform. The rib preferably includes a notch in the top of the rib in the stem of the second L-shaped portion at the conjunction of the stem and the arm; the notch is configured such that the second L-shape portion slides over the sidewall via the notch. In another embodiment, the stem of the second L-shape portion at the top of the rib extends above the sidewall slot. The first L-shaped portion extends between about 1 and about 13 inches beyond the bottom of the slot. The rib is preferably formed of fiber-reinforced thermosets, unreinforced thermosets, fiber-reinforced thermoplastics, and/or unreinforced thermoplastics.
[0171] Mount System
[0172] The present invention further provides for a mounting plate, system and method. Current mounting plates (
[0173] The present invention is directed to a system and method to mount components to a platform wall utilizing a joining mechanism that relies on the structural strength of the platform and the component instead of adhesive or other fasteners. The attachment method is applicable to any component that needs to be attached to a platform. An example embodiment is a valve mounting plate. The purpose of a valve mounting plate is to provide a mounting location on a platform wall for a controller assembly. The controller assembly is used by the operator to direct the movement of the platform while the operator is inside of the platform.
[0174] A common feature among the mounting systems of the present invention is that some portion of the mounting system is located inside and another portion is located outside of the platform via an opening in the platform wall. This is the design feature that allows the mounting system to be mechanically locked into a platform wall without adhesive.
[0175] Another benefit of the new mounting systems are their reduced size and weight. The reduced size also allows less adhesive to be used due to the reduced bonding surface area that is now allowed due to the redirection of stress into the platform wall and mounting plate.
[0176] Thus the present invention relies on the structural strength of the platform wall and the mounting plate to hold the two together. Adhesive is not the primary joining mechanism in this invention.
[0177] A first mounting plate example, generally described as 400, is shown in
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[0194] The bottom section 446 includes recesses 449 for stud heads (
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[0196] The reinforcement pieces 450 are bonded to the platform wall with an adhesive. The big head stud is inserted through a reinforcement piece on the inside of the platform, through the platform wall, and through a reinforcement on the outside of the platform. A non-conductive insulating cap 455 is placed over the stud heads on the inside of the platform to prevent any current from leaking through the platform wall. The insulating cap 455 is adhesively bonded in place or is connect via mechanical means. For example, the insulating cap is designed so it “snaps” into place over the stud heads when pressure is applied. The top and bottom of the reinforcement sections are rounded to reduce stress concentrations that is produced by sharp corners. The reinforcement sections on the inside of the platform extend up, past the reinforcement sections on the outside of the platform, by an inch or so. This further reduces stress concentrations by transferring more stress into the flange of the platform. All of the same materials proposed for previous designs are also used with this design.
[0197] The reinforcement sections preferably have a height-to-width ratio between about 3 and about 6. Whereas most prior art mounting plates have a height-to-width ratio between approximately 1 and 2, it was discovered that a greater height-to-width ratio was needed to prevent separation over time of the plate from the sidewall along the top and/or bottom edges.
[0198] In an example embodiment, the width of the plate 450 in
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[0200] Yet another mounting system example embodiment is shown in
[0201] On the inside of the platform, two inner reinforcement components 530 are positioned between the upper section 515 and the platform. The reinforcement components are slotted 535 to receive the transition 525 (
[0202] Advantageously, these valve mounting systems eliminate the risk associated with using adhesives to mount the mounting plate to the platform. In particular, a tension force that is created at the top of the plate when the plate is loaded has the potential to separate the mounting plate from a platform wall. Mechanically interlocking the platform wall via a slot or cutout in the platform wall eliminates the risk of separation of the mounting plate from the platform wall. However, in some scenarios it is undesirable to cut slots or holes in the wall of the platform and/or for the platform to include interior components because a platform liner, used for dielectric insulation, may not fit in a platform that has extra mounting plate components taking up space inside of the platform. In these scenarios, it is desirable for the entirety of the mounting plate to remain on the outside of the platform.
[0203] Such a mounting system according to the present invention includes a mounting plate that wraps around the sides of the platform and around the underside of the platform flange.
[0204] The plate is made out of fiber-reinforced thermosets, unreinforced thermosets, fiber-reinforced thermoplastics, or unreinforced thermoplastics. The studs are adhesively or mechanically joined with the mounting plate. Alternatively, the studs are embedded in the mounting plate when it is manufactured.
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[0206] The present invention is thus directed to a mounting plate for an elevating platform. The mounting plate includes an interior reinforcement piece, an exterior reinforcement piece, and at least one fastener. The interior and exterior reinforcement pieces are vertically elongated with rounded corners, and positioned on the interior and exterior of the platform sidewall, respectively. The at least one fastener is inserted through the interior reinforcement piece on the inside of the platform, through the sidewall, and through the exterior reinforcement piece on the outside of the platform. The height-to-width ratio of the reinforcement pieces is between about 3 and about 6. The fastener is a mounting stud embedded in the interior reinforcement piece. In one embodiment, the interior reinforcement piece extends above the exterior reinforcement piece. In another embodiment, the exterior reinforcement piece is wider at the bottom than the top; and the interior reinforcement piece is wider at the top than the bottom. The bottom of the exterior reinforcement piece is between about 50% and about 100% wider than the top and the top of the interior reinforcement piece is between about 50% and about 100% wider than the bottom. The plate preferably includes a spacer positioned between the exterior reinforcement piece and the sidewall and a dielectric cover positioned over the interior reinforcement piece and a head of the at least one fastener; the spacer is silicone and the dielectric cover is a non-conductive thermoplastic. The mounting plate is made from fiber-reinforced thermosets, unreinforced thermosets, fiber-reinforced thermoplastics, and/or unreinforced thermoplastics.
[0207] Another mounting plate according to the present invention includes a wide planar section, narrow planar section and a transition. The wide and narrow planar sections are in parallel planes and not coplanar and the connects the wide and narrow planar sections. The narrow planar section is inserted through a slot in the sidewall. The wide planar section has a horizontal dimension that is greater than the length of the slot, such that the plate cannot slide through the slot beyond the transition area. The wide and narrow planar sections are parallel with and juxtaposed to the sidewall, providing a top planar section and a bottom planar section. At least one of the planar sections including at least one hole and at least one fastener, preferably a mounting stud, inserted through the hole to the platform exterior. In one embodiment, the mounting plate includes two inner reinforcement components positioned between the top planar section and the platform. The reinforcement components are slotted to receive the transition, such that the two reinforcement components contact one another when in position and seal the slot. The mounting plate is made from fiber-reinforced thermosets, unreinforced thermosets, fiber-reinforced thermoplastics, and/or unreinforced thermoplastics.
[0208] The present invention is also directed to a support for mounting components to a container. The support has a front, a back, a bottom edge, at least two side edges, a main support component, a top edge with a tab, and means for attaching components to the main support component, preferably mounting studs embedded in the main support component. The main support component is substantially parallel to the main planar surface of a first wall of the container and configured to substantially contact the main planar surface of the first wall of the container. The tab on the top edge is configured to substantially contact the projection of the container, thereby transforming the tension stress along the top edge of the mounting plate into shear stress. Preferably, at least one side edge and/or the bottom edge is tapered or stepped. In one embodiment, the support includes a first side tab along a first side edge of the support; the first side tab is configured to substantially contact the exterior of a second wall of the container that is non-coplanar with the first wall, thereby transforming the tension stress to shear stress along the at least one side edge of the support. Another embodiment includes a second side tab along a second side edge of the support, wherein the second side tab is configured to substantially contact the exterior of a third wall of the container that is non-coplanar with the first and/or second walls; thereby transforming the tension stress to shear stress along the second side edge of the support. In one embodiment, the support is a mounting plate, the container is an elevating platform with sidewalls, a top flange and a bottom, and the projection is the top flange. The support is preferably made from fiber-reinforced thermosets, unreinforced thermosets, fiber-reinforced thermoplastics, and/or unreinforced thermoplastics.
[0209] Certain modifications and improvements will occur to those skilled in the art upon a reading of the foregoing description. All modifications and improvements have been deleted herein for the sake of conciseness and readability but are properly within the scope of the following claims.