TRANSPORTATION DEVICE AND METHOD FOR OCEAN ENGINEERING STRUCTURES

Abstract

The present disclosure provides a transportation device and method for ocean engineering structures. The transportation device includes a transport case body and a supporting member, where the transport case body has an accommodating cavity for loading cargoes. The supporting member includes a supporting plate, a protective plate and at least one supporting rod, where the supporting plate is arranged in the accommodating cavity, and the supporting plate is driven to ascend and descend in a first direction by at least one lifting mechanism to ascend to a first position to be close to the opening or descend to a second position to be far away from the opening. The protective plate is rotationally connected to the transport case body to shield or expose the opening, at least one sliding groove is provided at the protective plate, and each sliding groove is correspondingly and slidably connected to one supporting rod.

Claims

1. A transportation device for ocean engineering structures, by comprising: a transport case body with an accommodating cavity for loading cargoes, wherein the accommodating cavity has an opening; a supporting member comprising a supporting plate, a protective plate and at least one supporting rod, wherein the supporting plate is arranged in the accommodating cavity, the supporting plate is driven to ascend and descend in a first direction by at least one lifting mechanism to ascend to a first position to be close to the opening or descend to a second position to be far away from the opening, the protective plate is rotationally connected to the transport case body to shield or expose the opening, at least one sliding groove is provided at the protective plate, each sliding groove is correspondingly and slidably connected to one supporting rod, one end of the supporting rod is fixed on the supporting plate, the other end of the supporting rod is slidably connected to the sliding groove, the sliding groove has a first end and a second end which are oppositely arranged, and the supporting member has a first state and a second state; when the supporting member is at the first state, the supporting plate is driven to ascend to the first position by the lifting mechanism, the other end of the supporting rod slides to the first end of the sliding groove, and the protective plate is exposed to reveal the opening, allowing the accommodating cavity to be opened; and when the supporting member is at the second state, the supporting plate is driven to descend to the second position by the lifting mechanism, the other end of the supporting rod slides to the second end of the sliding groove, and the protective plate covers the opening, thereby completely sealing the accommodating cavity.

2. The transportation device for ocean engineering structures according to claim 1, wherein the lifting mechanism comprises a pushing member, a sliding block, a connecting rod and a fixing block, the pushing member comprises a pushing seat and a pushing rod, a certain included angle is formed between a moving direction of the pushing rod and a first direction, the sliding block is fixed at a tail end of the pushing rod, the fixing block is fixed on the supporting plate, one end of the connecting rod is rotationally connected to the sliding block, and the other end of the connecting rod is rotationally connected to the fixing block.

3. The transportation device for ocean engineering structures according to claim 1, further comprising a first clamping mechanism and a second clamping mechanism, wherein the first clamping mechanism comprises two first clamping plates and a first driving assembly, the two first clamping plates are slidably connected to the supporting plate, the first driving assembly drives the two first clamping plates to move in a second direction so as to enable the two first clamping plates to approach each other or move away from each other, the second clamping mechanism comprises two second clamping plates and a second driving mechanism, the two second clamping plates are slidably connected to the supporting plate, the second driving mechanism drives the two second clamping plates to move in a third direction so as to enable the two first clamping plates to approach each other or move away from each other, the second direction intersects with the third direction, and the first direction intersects with a plane formed by the second direction and the third direction.

4. The transportation device for ocean engineering structures according to claim 3, wherein the supporting plate is provided with a first slide groove which is through up and down, an extension direction of the first slide groove is the second direction, the first clamping mechanism comprises a double-headed threaded lead screw and a first driving member, the double-headed threaded lead screw is fixed at a bottom of the supporting plate and is arranged in parallel to the extension direction of the first slide groove, the two first clamping plates are symmetrically arranged on two sides of the double-headed threaded lead screw in a sleeving manner, the two first clamping plates penetrate the first slide groove, and the double-headed threaded lead screw is driven to rotate by the first driving member.

5. The transportation device for ocean engineering structures according to claim 3, wherein the first clamping plate is provided with a second slide groove, an extension direction of the second slide groove is the third direction, the second clamping mechanism comprises racks, gears and second driving members, two second slide grooves are provided at two ends of the second clamping plate respectively in a penetrating manner, two ends of the second clamping plate are fixedly connected to the two racks in a one-to-one corresponding manner, an extension direction of the rack is parallel to the extension direction of the second slide groove, the two racks fixed at the same ends of the two second clamping plates are meshed with one of the gears, and each gear is driven to rotate by one second driving member.

6. The transportation device for ocean engineering structures according to claim 3, wherein the two first clamping plates are symmetrically arranged, the two second clamping plates are symmetrically arranged, and the supporting plate, the protective plate, the two first clamping plates and the two second clamping plates form a rectangular frame in an enclosed manner so as to completely enclose the cargoes.

7. The transportation device for ocean engineering structures according to claim 4, wherein one group of buffer blocks are arranged on the second clamping plate, each group of buffer blocks comprise at least one buffer block, and two groups of buffer blocks on the two second clamping plates are oppositely arranged.

8. The transportation device for ocean engineering structures according to claim 1, wherein an inner side of the transport case body is provided with at least one limiting groove, the supporting plate is provided with at least one limiting block, each limiting groove is correspondingly and slidably connected to one limiting block, and an extension direction of the limiting groove is consistent with a depth direction of the accommodating cavity.

9. The transportation device for ocean engineering structures according to claim 1, wherein a sealing ring is arranged at a bottom of the protective plate, the sealing ring is arranged above the opening, and the sealing ring is inflated by an air pump so as to shield the opening together with the protective plate.

10. A transportation method for ocean engineering structures, being applied to the transportation device for ocean engineering structures according to claim 1, comprising: driving the supporting plate to ascend to the first position through the lifting mechanism, enabling the other end of the supporting rod to slide to the first end of the sliding groove, and exposing the opening through the protective plate so as to open the accommodating cavity; loading the cargoes onto the supporting plate; driving the supporting plate to descend to the second position through the lifting mechanism, enabling the other end of the supporting rod to slide to the second end of the sliding groove, and shielding the opening through the protective plate so as to completely close the accommodating cavity; and enabling the cargoes to be completely accommodated in the accommodating cavity.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings described herein are used for providing further understanding of the present disclosure, which form a part of the present disclosure. The illustrative embodiments of the present disclosure and the description thereof are used for explaining the present disclosure, which are not intended to unduly limit the present disclosure. In the accompanying drawings:

[0030] FIG. 1 is a schematic diagram of an integral structure of the present disclosure.

[0031] FIG. 2 is a schematic diagram of an internal structure of the present disclosure.

[0032] FIG. 3 is a schematic structural diagram of a supporting plate and a lifting mechanism of the present disclosure.

[0033] FIG. 4 is a schematic structural diagram of a first clamping mechanism of the present disclosure.

[0034] FIG. 5 is a schematic structural diagram of a supporting plate and a second clamping mechanism of the present disclosure.

[0035] FIG. 6 is a schematic structural diagram of a supporting rod and a protective plate of the present disclosure.

[0036] FIG. 7 is a section view of the present disclosure.

[0037] In the figures: 100, transportation device; 1, transport case body; 101, accommodating cavity; 102, opening; 103, limiting groove; 2, supporting plate; 21, first slide groove; 22, limiting block; 3, protective plate; 31, sliding groove; 311, first end; 212, second end; 4, supporting rod; 5, lifting mechanism; 51, pushing member; 511, pushing seat; 512, pushing rod; 52, sliding block; 53, connecting rod; 54, fixing block; 6, first clamping mechanism; 61, first clamping plate; 611, second slide groove; 62, first driving assembly; 621, double-headed threaded lead screw; 622, first driving member; 63, first rotating gear; 64, second rotating gear; 65, fixing member; 7, second clamping mechanism; 71, second clamping plate; 72, second driving mechanism; 721, rack; 722, gear; 73, buffer block; 8, sealing ring; 9, air pump; 10, connecting pipe; 11, electric push rod; and 12, fixing pin.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The technical solutions in the embodiments of the present disclosure are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure.

[0039] In the description of the present disclosure, it needs to be understood that the orientation or positional relationships indicated by the terms central, longitudinal, transversal, up, down, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, etc. are based on the orientation or positional relationships shown in the accompanying drawings, are merely for facilitating the description of the present disclosure, rather than indicating or implying the apparatus or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore will not be interpreted as limiting the present disclosure. In addition, the terms first and second are for descriptive purposes only and are not to be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with first and second may explicitly or implicitly include one or more of the features. In the description of the present disclosure, plurality of means two or more, unless otherwise specified.

Embodiment 1

[0040] A transportation device 100 for ocean engineering structures is provided in Embodiment 1, and the device includes a transport case body 1 and a supporting member.

[0041] Referring to FIGS. 1 and 2, the transport case body 1 has an accommodating cavity 101 for loading cargoes, the accommodating cavity 101 has an opening 102, and the cargoes can be put into the accommodating cavity 101 through the opening 102 or taken out of the accommodating cavity 101 through the opening 102. In this embodiment, a first direction is a Z-axis direction as shown in FIG. 1, representing a depth direction of the accommodating cavity 101. A second direction is an X-axis direction, representing a length direction of the accommodating cavity 101. A third direction is a Y-axis direction, representing a width direction of the accommodating cavity 101. The second direction intersects with the third direction, and the first direction intersects with a plane formed by the second direction and the third direction. An included angle between an X axis and a Y axis may be 80, 85, 90, etc. In this embodiment, the X axis and the Y axis are perpendicular to each other as an example for description. Moreover, an included angle between a Z axis and a plane formed by the X axis and the Y axis may be 85, 88, 90, etc. In this embodiment, the Z axis is perpendicular to the plane formed by the X axis and the Y axis as an example for description, that is, the accommodating cavity 101 is of a rectangular cavity structure.

[0042] Referring to FIGS. 1-3, the supporting member includes a supporting plate 2, a protective plate 3 and at least one supporting rod 4, where the supporting plate 2 is arranged in the accommodating cavity 101, the supporting plate 2 is driven to ascend and descend in a first direction by at least one lifting mechanism 5 to ascend to a first position to be close to the opening 102 or descend to a second position to be far away from the opening 102, and the protective plate 3 is rotationally connected to the transport case body 1 to shield or expose the opening 102. At least one sliding groove 31 is provided at the protective plate 3, and each sliding groove 31 is correspondingly and slidably connected to one supporting rod 4. One end of the supporting rod 4 is fixed on the supporting plate 2, and the other end of the supporting rod is slidably connected to the sliding groove 31. The sliding groove 31 has a first end 311 and a second end 312 which are oppositely arranged.

[0043] Moreover, the supporting member has a first state and a second state, which are specifically as follows:

[0044] When the supporting member is at the first state, the supporting plate 2 is driven to ascend to the first position by the lifting mechanism 5, the other end of the supporting rod 4 slides to the first end 311 of the sliding groove 31, and the protective plate 3 enables the opening 102 to be exposed, such that the accommodating cavity 101 is opened.

[0045] When the supporting member is at the second state, the supporting plate 2 is driven to descend to the second position by the lifting mechanism 5, the other end of the supporting rod 4 slides to the second end 312 of the sliding groove 31, and the protective plate 3 shields the opening 102, such that the accommodating cavity 101 is completely closed.

[0046] The first position and the second position are determined according to the height of the loaded cargoes, so as to ensure that a distance between the first position and the second position is greater than or equal to the height of the loaded cargoes, thereby enabling the cargoes to be completely accommodated in the accommodating cavity 101.

[0047] When in use, at least one lifting mechanism 5 drives the supporting plate 2 to ascend to the first position in the depth direction of the accommodating cavity 101 to be close to the opening 102. In this process, the supporting rod 4 ascends along with the supporting plate 2, the other end of the supporting rod 4 slides to the first end 311 of the sliding groove 31, the protective plate 3 rotates relative to the transport case body 1, and the opening 102 is exposed through the protective plate 3 so as to open the accommodating cavity 101. Since the supporting plate 2 ascends to the position close to the opening 102, loading and unloading of the cargoes are facilitated.

[0048] When loading of the cargoes is finished, at least one lifting mechanism 5 drives the supporting plate 2 to descend to the second position in the depth direction of the accommodating cavity 101 so as to be far away from the opening 102. In this process, the supporting rod 4 descends along with the supporting plate 2, the other end of the supporting rod 4 slides to the second end 312 of the sliding groove 31, the protective plate 3 rotates relative to the transport case body 1, and the protective plate 3 shields the opening 102 so as to close the accommodating cavity 101, thereby facilitating transportation of the transport case body 1 and storage of the cargoes.

[0049] In addition, at least one lifting mechanism 5 drives the supporting plate 2 to ascend or descend in the first direction, such that the cargoes can also be ensured to be clamped between the supporting plate 2 and the protective plate 3.

[0050] The transportation device 100 for ocean engineering structures provided by this embodiment can open the protective plate 3 while raising the supporting plate 2, close the protective plate 3 while lowering the supporting plate 2, and facilitate automatic loading and unloading of the cargoes.

[0051] In this embodiment, referring to FIG. 1, the number of the protective plates 3 is one or more. When the number of the protective plates 3 is multiple, the multiple protective plates 3 are oppositely arranged, each protective plate 3 is provided with one or more sliding grooves 31, and each sliding groove 31 corresponds to one supporting rod 4.

[0052] In this embodiment, referring to FIG. 3, at least one lifting mechanism 5 is arranged, and the lifting mechanism 5 includes a pushing member 51, a sliding block 52, a connecting rod 53 and a fixing block 54. The pushing member 51 includes a pushing seat 511 and a pushing rod 512, the pushing seat 511 is fixed at a bottom of the accommodating cavity 101, and a certain included angle is formed between a moving direction of the pushing rod 512 and the first direction. The sliding block 52 is fixed at a tail end of the pushing rod 512, the fixing block 54 is fixed on the supporting plate 2, one end of the connecting rod 53 is rotationally connected to the sliding block 52, and the other end of the connecting rod is rotationally connected to the fixing block 54.

[0053] The angle between the moving direction of the pushing rod 512 and the first direction is determined according to the angle between the bottom of the accommodating cavity 101 and the first direction. In the particular embodiment of this embodiment, the accommodating cavity 101 is of a rectangular cavity structure, such that the moving direction of the pushing rod 512 is perpendicular to the first direction.

[0054] When in use, the connecting rod 53 rotates by shortening the pushing rod 512 to raise the supporting plate 2, or the connecting rod 53 rotates by extending the pushing rod 512 to lower the supporting plate 2 to raise, thereby raising and lowering the supporting plate 2. The pushing seat 511 is fixed at the bottom of the accommodating cavity 101, and the moving direction of the pushing member 51 is perpendicular to the depth direction of the accommodating cavity 101, so as to ensure that the supporting plate 2 can move up and down in the depth direction of the accommodating cavity 101.

[0055] In the particular embodiment of this embodiment, the two lifting mechanisms 5 are symmetrically arranged below the supporting plate 2 at a certain distance, and the two lifting mechanisms 5 move synchronously to ensure that the supporting plate 2 can ascend or descend smoothly.

[0056] In this embodiment, the pushing member 51 is of a hydraulic rod, a pneumatic rod or an electric push rod.

[0057] Due to heavy sea waves, during transportation of the cargoes, if a gap between the cargoes and the transportation device 100 is large, the cargoes will shake back and forth, and damage to the cargoes will be likely to be caused. Referring to FIGS. 2, 4 and 5, a first clamping mechanism 6 and a second mechanism 7 are further arranged in this embodiment. The first clamping mechanism 6 is used for clamping the cargoes in the second direction, and the second clamping mechanism 7 is used for clamping the cargoes in the third direction, so as to ensure that the cargoes can be completely clamped.

[0058] In this embodiment, referring to FIGS. 2 and 4, the first clamping mechanism 6 includes two first clamping plates 61 and a first driving assembly 62, the two first clamping plates 61 are slidably connected to the supporting plate 2, and the first driving assembly 62 drives the two first clamping plates 61 to move in the second direction so as to enable the two first clamping plates 61 to approach each other or move away from each other. The second clamping mechanism 7 includes two second clamping plates 71 and a second driving mechanism 72, the two second clamping plates 71 are slidably connected to the supporting plate 2, and the second driving mechanism 72 drives the two second clamping plates 71 to move in the third direction so as to enable the two first clamping plates 61 to approach each other or move away from each other.

[0059] Specifically, in this embodiment, the first driving assembly 62 can directly drive the two first clamping plates 61 to move in the second direction so as to enable the two first clamping plates 61 to approach each other or move away from each other, and the two first clamping plates 61 can also be indirectly driven by other components to move in the second direction so as to enable the two first clamping plates 61 to approach each other or move away from each other. The second driving mechanism 72 can directly drive the two second clamping plates 71 to move in the third direction so as to enable the two clamping plates 71 to approach each other or move away from each other, and the two second clamping plates 71 can also be indirectly driven by other components to move in the third direction so as to enable the two second clamping plates 71 to approach each other or move away from each other.

[0060] In this embodiment, the first driving assembly 62 includes a double-headed threaded lead screw 621 and a first driving member 622, the supporting plate 2 is provided with a first slide groove 21 which is through up and down, and an extension direction of the first slide groove 21 is the second direction. The double-headed threaded lead screw 621 is fixed at a bottom of the supporting plate 2 and is arranged in parallel to the extension direction of the first slide groove 21, the two first clamping plates 61 are symmetrically arranged on two sides of the double-headed threaded lead screw 621 in a sleeving manner, and the two first clamping plates 61 penetrate the first slide groove 21. The double-headed threaded lead screw 621 is driven to rotate by the first driving member 622, and the first driving member 622 can be of a stepping motor.

[0061] Specifically, the first driving member 622 may be directly connected to the double-headed threaded lead screw 621, that is, an output shaft of the first driving member 622 is fixedly connected to the double-headed threaded lead screw 621, and the double-headed threaded lead screw 621 is directly driven to rotate by the first driving member 622. Indirect connection may also be realized through other components, which is not limited in this embodiment.

[0062] In the particular embodiment, a first rotating gear 63 is fixed at a middle of the double-headed threaded lead screw 621, a second rotating gear 64 is fixed on an output shaft of the first driving member 622, and the first rotating gear 63 and the second rotating gear 64 are meshed to enable the first driving member 622 to indirectly drive the double-headed threaded lead screw 621 to rotate.

[0063] In this embodiment, one or more fixing bodies 65 are fixed to the bottom of the supporting plate 2, and the double-headed threaded lead screw 621 is rotationally connected to the one or more fixing bodies 65, such that the double-headed threaded lead screw 621 is supported by the one or more fixing bodies 65.

[0064] When in use, the double-headed threaded lead screw 621 is driven to rotate by the first driving member 622, such that the two first clamping plates 61 are close to each other, and the cargoes can be clamped in the second direction. When the cargoes need to be unloaded, the double-headed threaded lead screw 621 is driven to rotate by the first driving member 622, such that the two first clamping plates 61 are far away from each other, and the cargoes can be loosened in the second direction, thereby releasing the cargoes.

[0065] In this embodiment, referring to FIGS. 2 and 5, the first clamping plate 61 is provided with a second slide groove 611, and an extension direction of the second slide groove 611 is the third direction. The second driving mechanism 72 includes racks 721, gears 722 and second driving members, the two second clamping plates 71 are symmetrically arranged, and the two first clamping plates 61 and the two second clamping plates 71 form a rectangular frame in an enclosed manner. Two second slide grooves 611 are provided at two ends of the second clamping plate 71 respectively in a penetrating manner, and two ends of the second clamping plate 71 are fixedly connected to the two racks 721 in a one-to-one corresponding manner. Each second clamping plate 71 forms a right-angled C shaped with the two racks 721 which are connected to the second clamping plate. An extension direction of the rack 721 is parallel to the extension direction of the second slide groove 611, the two racks 721 fixed at the same ends of the two second clamping plates 71 are meshed with one gear 722, and each gear 722 is driven to rotate by one second driving member. The second driving member is of a stepping motor.

[0066] When in use, the two second driving members simultaneously drive the gears 722 to which the two second driving members corresponds in a one-to-one manner to rotate respectively, such that the two gear racks 721 to which the two second clamping plates 71 correspond in a one-to-one manner at the same end are meshed with one gear 722, and the two second clamping plates 71 are close to or far away from each other, thereby enabling the cargoes to be clamped or released in the third direction.

[0067] In this embodiment, the two first clamping plates 61 and the two second clamping plates 71 form the rectangular frame in the enclosed manner, and at least one lifting mechanism 5 drives the supporting plate 2 to ascend or descend in the depth direction of the accommodating cavity 101, such that the cargoes are clamped between the supporting plate 2 and the protective plate 3 in all directions, so as to prevent the cargoes from shaking and protect the cargoes more safely.

[0068] In this embodiment, in order to buffer the cargoes so as to further protect the cargoes, one group of buffer blocks 73 are arranged on the second clamping plate 71, each group of buffer blocks 73 include at least one buffer block 73, and two groups of buffer blocks 73 on the two second clamping plates 71 are oppositely arranged.

[0069] In this embodiment, referring to FIGS. 2 and 3, in order to limit the moving direction of the supporting plate 2, an inner side of the transport case body 1 is provided with at least one limiting groove 103, the supporting plate 2 is provided with at least one limiting block 22, each limiting groove 103 is correspondingly and slidably connected to one limiting block 22, and an extension direction of the limiting groove 103 is consistent with the first direction.

[0070] In the particular embodiment, a first inner side and a second inner side of the transport case body 1 each are provided with two limiting grooves 103, and a first side and a second side of the supporting plate 2 each are provided with two limiting blocks 22.

[0071] In this embodiment referring to FIGS. 6 and 7, a bottom of the protective plate 3 is provided with a sealing ring 8, the sealing ring 8 is arranged below the opening 102, and the sealing ring 8 is inflated by an air pump 9 to cover the opening 102 together with the protective plate 3. The air pump 9 inflates the sealing ring 8 through a connecting pipe 10, one end of the connecting pipe 10 is fixedly connected to an output end of the air pump 9, and the other end of the connecting pipe 10 is fixedly connected to the sealing ring 8, such that a gap between the opening 102 and the protective plate 3 is sealed, thereby achieving the effect of preventing seawater from entering and corroding articles.

[0072] In this embodiment, referring to FIG. 1, an electric push rod 11 is fixedly connected to the transport case body 1, an output end of the electric push rod 11 is fixedly connected to a fixing pin 12, and the fixing pin 12 is slidably connected to the transport case body 1.

[0073] Specifically, the output end of the electric push rod 11 drives the fixing pin 12 to slide in the transport case body 1, such that a towing rope is fixed on the fixing pin 12, and the effect of fast falling off is achieved through movement of the fixing pin 12.

Embodiment 2

[0074] A transportation method for ocean engineering structures is provided in embodiment 2, which is applied to the transportation device 100 for ocean engineering structures and includes:

[0075] drive the supporting plate 2 to ascend to the first position through the lifting mechanism 5, enable the other end of the supporting rod 4 to slide to the first end 311 of the sliding groove 31, and expose the opening 102 through the protective plate 3 so as to open the accommodating cavity 101;

[0076] load the cargoes onto the supporting plate 2;

[0077] drive the supporting plate 2 to descend to the second position through the lifting mechanism 5, enable the other end of the supporting rod 4 to slide to the second end 312 of the sliding groove 31, and shield the opening 102 through the protective plate 3 so as to completely close the accommodating cavity 101; and

[0078] enable the cargoes to be completely accommodated in the accommodating cavity.

[0079] When it is necessary to further clamp the cargoes, the double-headed threaded lead screw 621 is driven to rotate by the first driving member 622, such that the two first clamping plates 61 are close to each other, and the cargoes can be clamped in the second direction. When it is necessary to unload the cargoes, the double-headed threaded lead screw 621 is driven to rotate by the first driving member 622, such that the two first clamping plates 61 move away from each other, and the cargoes can be loosened in the second direction, thereby loosening the cargoes.

[0080] The two second driving members simultaneously drive the two gears 722 to rotate, such that the two racks 721 corresponding to the two clamping plates at the same ends of the two second clamping plates 71 are meshed with one gear 722, and the two second clamping plates 71 are close to or far away from each other, thereby enabling the cargoes to be clamped or released in the third direction.

[0081] Apparently those skilled in the art can make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure. In this way, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent technologies, the present disclosure is also intended to include these modifications and variations.