Ballasted attachment for temporary truss structures

Abstract

Ballasted Attachment for Temporary Truss Structures or BATTS are used to support Temporary structures typically built in the live event, trade show, and special event marketplace. BATTS provide a quickly deployed, leveled and stable base for which one can mount aluminum box truss too. This allows tower construction equal to the capacity of the truss itself and a flexible outrigger attachment in which many engineering requirements can be achieved. BATTS provide a ballast point to resist the overturn moment and uplift moment of concert roofs and other system that are exposed to environmental conditions. BATTS are constructed from steel and aluminum and possess substantial self-weight.

Claims

1. A ballast base for supporting truss towers, the base comprising: a cube; a top inner plate within the cube; a top outer plate of the cube positioned above the top inner plate, wherein the top outer plate has a cutout region; a slidable plate between the top inner plate and the top outer plate; an attachment plate with one or more connection points for connection to a truss tower; and a clamping mechanism connecting the slidable plate and the attachment plate, wherein rotation and sliding of the slidable plate and the attachment plate is possible when unclamped, and the slidable plate and the attachment plate are fixed in position relative to each other and the cube when clamped.

2. The ballast base of claim 1, wherein the clamping mechanism is a nut and bolt.

3. The ballast base of claim 2, wherein the bolt is a 1.75 inch grade 5 or grade 8 structural bolt.

4. The ballast base of claim 1, wherein the cube is 3 feet wide by 3 feet long by 2 feet high.

5. The ballast base of claim 4, wherein the cube weighs 1,750 pounds.

6. The ballast base of claim 1, wherein the top inner plate, the top outer plate, a bottom plate of the cube, and four side panels of the cube are each 1 inch thick plate steel.

7. The ballast base of claim 1, wherein the cube has four interlocking side panels welded together.

8. The ballast base of claim 7, wherein each side panel has two or more pockets for fork lifts.

9. The ballast base of claim 7, wherein each side panel has a lower elevated relief for pallet jacks.

10. The ballast base of claim 7, wherein each side panel has one or more horizontal slots for drainage.

11. The ballast base of claim 7, wherein each side panel has one or more vertical slots for hooks to hold screw jacks in place.

12. The ballast base of claim 7, wherein each side panel has a central hole for accessing an internal cavity of the cube.

13. The ballast base of claim 1, wherein the sliding plate is 24 inches wide by 24 inches long.

14. The ballast base of claim 1, wherein the top inner plate is covered with an ultra-high-molecular-weight (UHMW) polyethylene plastic.

15. The ballast base of claim 1, wherein the cutout of the top outer plate is a square with 8 inch long sides.

16. The ballast base of claim 1, wherein the cube has a bottom plate with four tubes passing through vertically, each tube holding a screw jack for leveling the cube.

17. The ballast base of claim 16, wherein the cube has a bottom plate with one or more drainage holes.

18. The ballast base of claim 1, wherein the top inner plate has four tubes passing through vertically, each tube holding a screw jack.

19. The ballast base of claim 1, wherein the top inner plate has one or more drainage holes.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the drawings, closely related figures and items have the same number but different alphabetic suffixes. Processes, states, statuses, and databases are named for their respective functions.

(2) FIG. 1 is an isometric top-down view of the ballast block.

(3) FIG. 2 is an internal top-view of the cube, showing an internal top plate.

(4) FIG. 3 is a side view of a sliding plate of the ballast block.

(5) FIG. 4 is an isometric view of the sliding plate of FIG. 3.

(6) FIG. 5 is a top-down view of the ballast block of FIG. 1.

(7) FIG. 6 is an isometric view of the ballast block of FIG. 1 connected to a tower truss.

(8) FIG. 7 is the isometric view of FIG. 1 with the attachment plate not shown.

(9) FIG. 8 is a side view of the ballast block of FIG. 1.

(10) FIG. 9 is an isometric bottom-up view of the ballast block of FIG. 1.

DETAILED DESCRIPTION, INCLUDING THE PREFERRED EMBODIMENT

(11) In the following detailed description, reference is made to the accompanying drawings which form a part hereof, and in which are shown, by way of illustration, specific embodiments which may be practiced. It is to be understood that other embodiments may be used, and structural changes may be made without departing from the scope of the present disclosure.

(12) Terminology

(13) The terminology and definitions of the prior art are not necessarily consistent with the terminology and definitions of the current invention. Where there is a conflict, the following definitions apply.

(14) Temporary Structuresany structure that is intended to be erected for six or less weeks. This includes an assembly of materials to build a load bearing structure with the intent to be used as a support system for other items, to be used as a shelter, to be used for display, to be used for artistic design, or to be used as a performance area or access point.

(15) Ballasta mass used to secure structures or items from overturn, such as a mass used to resist gravity, wind, or seismic event; a method for anchoring items.

(16) Outdoor Structurestemporary structures set up outdoors.

(17) Theatrical Trussesobject constructed from aluminum or steel usually in a box or rectagonal formation and modular in nature. Constructed using typical truss design of triangle geometry.

(18) Operation

(19) Referring to FIG. 1, the Ballasted Attachment for Temporary Truss Structures 100 (BATTS) ballast block offers end users greater adjustment than other known tower bases. The BATTS is preferably a 1,750 pound cube which can serve as both base and ballast for a connected truss structure. With the BATTS, the end user can place the 1,750 lbs. ballast in a predetermined location and retain adjustability in the base to insure the tower will be in the proper final location. This adjustability comes from the BATTS attachment plate 110. This top connection plate offers a fixed attachment point for the tower while still allowing for 360 degree or adjustability relative to the BATTS base. In a preferred embodiment, the top connection plate also gives the end user the ability to place the Base within 8 of its required location, which is not possible with other ballast bases. This range of motion allows for a quicker set up time of temporary tress structures by as much as 80%.

(20) The BATTS is constructed of plate steel, preferably ranging from plate to 1 thick plate. The BATTS may vary in size to accommodate for weight and specific use cases, but in a preferred embodiment is a 3 wide3 wide2 high cube. The thickness of the steel plates may be also varied to achieve different final weight of the BATTS.

(21) Four plates are involved enabling adjustable connection to tresses, including a top inner plate, a sliding plate, a top outer plate, and an attachment plate. Referring also to FIG. 2, top inner plate 200 is internal to the cube and not externally visible. Top inner plate 200 may include one or more (preferably four) drainage holes 210, allowing drainage of any water or liquid from within the cube. Top inner plate 200 may also have cutouts 220 for four tubes encasing screw jacks. The screw jacks and tubes may optionally be shorter and not reach top inner plate 200, in which cutouts 220 in top inner plate 200 are not needed. Top inner plate 200 is preferably , or 1 thick plate steel, and approximately 33.9 inches square to fit inside the cube. Top inner plate 200 is optionally covered with a sheet of ultra-high-molecular-weight (UHMW) polyethylene plastic for friction reduction.

(22) Referring also to FIGS. 3-4, above top inner plate 200 (and friction reducing plastic covering, if used) is sliding plate 300 and king pin attachment 120. Sliding plate 300 is preferably 24 in width and length. This preferred embodiment fully supports operation with standard 20.5 truss towers. The sliding plate design allows the user to place the ballast with less accuracy than required by other bases. Corners of the sliding plate may optionally be curved or trimmed. Slidable and rotational positioning is achieved through top inner plate 200, sliding plate 300, a clamping mechanism of bolt 120 and nut 140, top outer plate 130 that captures the sliding plate, and aluminum tower attachment plate 110 which connects directly to a tower. Sliding plate 300 is preferably a thick steel plate. Bolt 120 is preferably a 1.75 grade 5 or 8 structural bolt.

(23) Referring also to FIG. 5, Tower attachment plate 110 is preferably a 1 thick aluminum plate. One or more connection points 500 are positioned to connect to truss towers. In the preferred embodiment the connection points are connection holes for standard 1212, 1818, and 20.520.5 box trusses, but alternate hole numbers and alignments may be drilled through attachment plate 110 for connection to other truss sizes or geometry. Alternate connection types, such as built-in bolts, may also be used instead of holes for connection to other truss structures, with the connection type selected and positioned to match required connection to the structured. A center hole 510 in attachment plate 110 is sized to fit around bolt 120 and be clamped by nut 140.

(24) Referring also to FIG. 6, for installation, tower attachment plate 110 is first bolted or pinned to the base of tower 600. Once the BATTS cube is placed, tower attachment plate 110 and the bottom section of the tower slide over bolt 120 that is connected to sliding plate 300.

(25) Referring also to FIG. 7 (which shows the BATTS cube without the attachment plate present), sliding plate 300 may be slid and rotated into a needed position without otherwise repositioning the base. Movement is limited by cutout 700 in top outer plate 130. Top outer plate 130 is preferably 1 inch thick plate steel. Cutout 700 is preferably a square with 8 inch long sides, although alternate shapes (such as a circle) or sizes may be used. Once the bottom tower assembly is in place and the horizontal and rotational adjustments have been made, nut 140 can be tightened to engineered torque settings, preferably 300 ft-lbs. With the nut set to the proper torque setting, the BATTS holds the tower in position allowing an end user the full capacity of an aluminum truss tower. The Tower and elements attached to the tower benefit from great stability, uplift resistance, and overturn resistance.

(26) The sides of the cube may be interlocking and fully welded together. Each side panel is preferably 1 thick plate steel, although alternate thickness (such as thick) may be used if alternate end weight and/or size is desired. Non-interlocking sides are also possible, but an interlocking side panel design allows for a stronger welded connection and lower cost of construction.

(27) Referring also to FIG. 8, each side 800 of the cube have attachment holes 810 for additional trusses and accessories for the purposes of outriggers, hoist attachments, lifting points, tie down points or any additional hardware deemed necessary during the event design process. These convenient attachment locations are primarily used for outriggers which allows for an increased footprint to resist the overturn moment. Attaching a truss to the side of the BATTS can create a connection point locking multiple towers together at their base.

(28) The sides of the BATTS have pockets 820 for fork lift blades as well as a lower elevated relief 830 allowing for warehouse style fork trucks, aka pallet jacks, to get under the base for portability. This allows for safe and quick placement of the BATTS as well as safe and efficient loading and off-loading to and from transport vehicles.

(29) Each side of the BATTS may have one or more small horizontal slots 840. These slots allow for the drainage of water and small debris.

(30) The sides of the BATTS may have one or more small vertical slots 850. These slots may be used to attach a hook or other apparatus to hold each screw jack inside tubes when the unit is being raised via fork truck or other overhead lifting device.

(31) The internal cavity of the cube is normally empty, however it can be filled to add additional weight or lightning elements, which may add lighting effects to the base of a tower. Insertion of internal elements is made through large hole 860 in side panel 800. This increases the versatility of the BATTS through adjustment of the final weight without increasing the overall size.

(32) Referring also to FIG. 9, the base of the BATTS may have four tubes 900 to receive Screw Jacks. These screw jacks may be used to level of the Ballasted Attachment for Temporary Truss Structures on uneven terrain.

(33) The bottom inner plate of the Ballasted Attachment for Temporary Truss Structures has one or more (preferably four) holes 910. These holes are in place to allow for drainage of rainwater.

(34) Other Embodiments

(35) While the nut and bolt are a preferred clamping mechanism to connect and clamp into position the sliding plate and attachment plate, alternate clamping mechanism my be used. Requirements for the clamping mechanism include connection between the sliding plate and attachment plate to allow rotation and repositioning when unclamped, and sufficient clamping strength to prevent any rotation, repositioning, or tilting of an attached tower when clamped.

(36) While the preferred embodiment includes attachment holes, pockets, vertical and horizontal slots, and a large hole in each side, any or all can alternatively be removed from one or more sides. Removal reduces functional flexibility by reducing (or completely removing) the number of sides where connection, draining, lifting for movement, and filling are possible, but removal does not prevent intended function as a ballast block.

(37) It is to be understood that the above description is intended to be illustrative, and not restrictive. Many other embodiments will be apparent to those of skill in the art upon reviewing the above description. The scope of the invention should, therefore, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.