Tank transport semi-trailer and its supporting device

Abstract

The present invention provides a tank transport semi-trailer and a supporting device thereof. The supporting device includes a supporting frame and two legs. The supporting frame includes two leg connecting brackets opposite to each other on the left and right, two supporting top plates respectively placed flat and fixed to the upper ends of the two leg connecting brackets, and a connecting crossbeam fixedly connected between the two leg connecting brackets; the connecting crossbeam is located in the middle and lower part of the two leg connecting brackets so that there is a gap between the connecting crossbeam and the supporting top plate; the two legs are respectively detachably connected to the outer sides of the two leg connecting brackets. By lowering the position of the connecting crossbeam, the connecting crossbeam is closer to the center of gravity of the legs above the ground, which better meets the force conditions of the legs and enhances the overall stability of the supporting device. Moreover, the lowering of the position of the connecting crossbeam allows a gap between the connecting crossbeam and the supporting top plate, thereby facilitating the pipes of the tank body, effectively solving the problem of interference between the pipes at the bottom of the tank body and the supporting device, and facilitating the arrangement of the pipes.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a tank transport semitrailer and a supporting device thereof. Background Art

[0002] Tank transport semi-trailer refers to a road transport semi-trailer used to transport liquids, gases and other substances, with the tank body permanently installed on the unpowered semi-trailer running mechanism. When the semi-trailer needs to be detached or attached, it is necessary to use the legs installed on the front of the frame to fix the semi-trailer.

[0003] The supporting structure in the prior art includes a support leg and a support bracket. The support leg is in the form of an upper support leg, and the support bracket is welded to the side belly plate of the semi-trailer, and its overall stability is poor. Summary of the invention

[0004] The object of the present invention is to provide a supporting device with good stability and a tank transport semi-trailer with the supporting device, so as to solve the problems in the prior art.

[0005] In order to solve the above technical problems, the present invention provides a supporting device for a tank transport semi-trailer, comprising: a supporting frame, including two left and right opposite leg connecting brackets, two supporting top plates respectively laid flat and fixed to the upper ends of the two leg connecting brackets, and a connecting crossbeam fixedly connected between the two leg connecting brackets; the connecting crossbeam is located at the middle and lower parts of the two leg connecting brackets so that there is a gap between the connecting crossbeam and the supporting top plate; two legs are respectively detachably connected to the outer sides of the two leg connecting brackets.

[0006] In one embodiment, a reinforcing plate is respectively arranged between each of the supporting top plates and the connecting beam, and the reinforcing plate is respectively fixed to the connecting beam, the supporting top plate and the supporting leg connecting bracket, and the two reinforcing plates are spaced apart from each other and form an accommodating space therebetween.

[0007] In one embodiment, the reinforcing plate includes a right-angled trapezoidal reinforcing main board and a reinforcing folded edge formed by bending the oblique side of the reinforcing main board, the reinforcing folded edge is bent in a direction away from the connecting cross beam, and the reinforcing folded edges of the two reinforcing plates are arranged opposite to each other, the top of the reinforcing main body is fixed to the supporting top plate, and the other end of the reinforcing main body relative to the reinforcing folded edge is fixed to the leg connecting bracket.

[0008] In one embodiment, the connecting beam includes a Z-shaped beam body and an extension edge extending upward from the top of the beam body, and the extension edge is attached to and bonded to one side of the bottom of the reinforcing plate main board.

[0009] In one embodiment, the leg connecting bracket includes: a connecting bracket body and a reinforcing body formed on one side of the lower portion of the connecting bracket body, and the reinforcing body is inclined relative to the supporting top plate to form a bottom narrowed structure of the connecting bracket body.

[0010] In one embodiment, the reinforcement bodies of the two leg connecting brackets extend relative to each other and are respectively perpendicular to their respective bracket bodies, and the bracket body forms an assembly portion above the reinforcement body, and the assembly portion and the top of the reinforcement body form a supporting structure; the two connecting bracket bodies extend toward each other on opposite sides of the reinforcement body to form side folds.

[0011] In one embodiment, a plurality of assembly holes are provided on the support top plate; a plurality of assembly holes are provided at positions opposite to each other near the top of the two leg connecting brackets; each leg connecting bracket is provided with a group of mounting holes on both sides of the connecting beam, and each group of mounting holes is used to connect the legs.

[0012] In one embodiment, the plurality of assembly holes are distributed into at least one group, and each group of assembly holes is distributed at intervals along the longitudinal direction; the plurality of assembly holes and each group of installation holes are perpendicular to each other.

[0013] The present invention also provides a tank transport semi-trailer, comprising: a tank body, a traction module, a frame body and the support device as described above; the support top plate of the support device is detachably connected to the tank body, the leg connecting bracket of the support device is detachably connected to the frame body, and there is a gap between the traction module and the support device.

[0014] In one embodiment, the support device is the support device as described above, the frame body includes two parallel and oppositely arranged longitudinal beams, the front end of each longitudinal beam is provided with at least one row of connecting holes distributed at intervals along the longitudinal direction, and the longitudinal beam and the support device are movably adapted and assembled in the longitudinal direction through their respective connecting holes and assembly holes.

[0015] It can be seen from the above technical solution that the advantages and positive effects of the present invention are:

[0016] The support device of the present invention includes a support frame and two legs. The support frame includes two leg connection brackets opposite to each other, two support top plates respectively placed flat and fixed to the upper ends of the two leg connection brackets, and a connecting crossbeam fixedly connected between the two leg connection brackets. The connecting crossbeam is located in the middle and lower part of the two leg connection brackets. By lowering the position of the connecting crossbeam, the connecting crossbeam is closer to the center of gravity of the legs above the ground, which better meets the force conditions of the legs and enhances the overall stability of the support device. The lowering of the position of the connecting crossbeam allows a gap to exist between the connecting crossbeam and the support top plate, thereby facilitating the pipes of the tank body, effectively solving the problem of interference between the pipes at the bottom of the tank body and the support device, and facilitating the arrangement of the pipes. The support frame and the two legs are three independent modules, so the support device has a small number of parts, a simple structure, is relatively easy to install, and has a high degree of standardization.

[0017] The tank transport semi-trailer of the present invention comprises a tank body, a traction module, a frame body and a supporting device which are independent of each other, so that the tank transport semi-trailer can be manufactured and transported separately, which reduces the difficulty of manufacturing and logistics transportation and improves the economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of one embodiment of the tank transport semi-trailer of the present invention;

[0019] Figure 2 A side view of one embodiment of the tank transport semi-trailer of the present invention;

[0020] Figure 3 For the present invention Figure 1 A schematic diagram of the structure of the connection between the middle support device and the tank body and the frame body;

[0021] Figure 4 It is a structural schematic diagram of the support frame in the present invention;

[0022] Figure 5 It is a front view of the support leg connecting bracket in the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the support legs connected to the cross beam in the present invention;

[0024] Figure 7 It is a schematic structural diagram of the reinforcing plate in the present invention.

[0025] Among them, the description of the accompanying drawings is as follows: 100, tank transport semi-trailer; 1, tank body; 11, tank body body; 12, support; 2, traction module; 3, frame body; 31, longitudinal beam; 4, support device; 41, support frame; 411, support leg connecting bracket; 4111, connecting bracket body; 4112, reinforcement body; 4113, side folding edge; 4115, main body; 4116, assembly part; 4117, extension part; 4118, assembly hole; 4119, installation hole; 412, support top plate; 4121, assembly hole; 413, connecting crossbeam; 4131, crossbeam body; 4132, extension edge; 4136, web; 4137, upper flange plate; 4138, lower flange plate; 414, reinforcement plate; 4141, reinforcement main board; 4142, reinforcement folding edge; 42, support leg. DETAILED DESCRIPTION

[0026] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0027] In order to further illustrate the principle and structure of the present invention, preferred embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0028] See also Figure 1 and Figure 2 The present invention provides a tank transport semi-trailer 100, which mainly includes a tank body 1, a traction module 2, a frame body 3 and a support device 4. The support device 4 is detachably connected to the tank body 1, the support device 4 is detachably connected to the frame body 3, and there is a gap between the traction module 2 and the support device 4, that is, the above four parts are separable structures, so that the tank transport semi-trailer 100 can be manufactured and transported separately, which reduces the difficulty of manufacturing and logistics transportation and improves economic benefits.

[0029] For the convenience of describing the orientation, the present invention takes the width direction of the tank transport semi-trailer 100 as the transverse direction, and takes the length direction of the tank transport semi-trailer 100 as the longitudinal direction.

[0030] The tank body 1 includes a tank body 11 and a support 12. The tank body 11 is used to carry materials, and the support 12 is used to connect the tank body 11 with the traction module 2, the frame body 3 and the support device 4. In this embodiment, a plurality of supports 12 are arranged at intervals along the longitudinal direction. Bolt holes are provided on each support 12 for detachably connecting the traction module 2, the frame body 3 and the support device 4 to the tank body 11, respectively.

[0031] The traction module 2 includes a traction base plate and a traction pin. The traction pin is used to match the saddle of the tractor, and is fixed on the traction base plate and extends downward from the traction base plate. When the semi-trailer is docked with the tractor, the traction pin extends into the saddle of the tractor.

[0032] There is a gap between the support device 4 and the traction module 2. Specifically, the support device 4 and the traction module 2 are designed as independent modules, which are disconnected and have no connection structure. The design here meets the frame bearing strength requirements and achieves the design purpose of weight reduction after force analysis and special arrangement of the support 12 position.

[0033] The frame body 3 mainly includes two longitudinal beams 31 extending in the longitudinal direction. Specifically, the longitudinal beam 31 includes an upper wing plate and a lower wing plate arranged in parallel and spaced apart, and a web plate connected between the upper wing plate and the lower wing plate. The front end of the web plate of each longitudinal beam 31 is provided with at least one row of connection holes spaced apart in the longitudinal direction. In this embodiment, the connection holes are waist-shaped holes.

[0034] See also Figure 3 The top of the support device 4 is connected to the support 12 of the tank body 1, and the support device 4 is connected to the frame body 3 in the longitudinal direction. The support device 4 is detachably connected to the tank body 1 and the frame body 3, respectively, so that the tank body 1, the traction module 2, the support device 4 and the frame body 3 of the tank transport semi-trailer 100 can be manufactured and transported separately, thereby reducing the difficulty of manufacturing and logistics transportation, so that the tank transport semi-trailer 100 meets the requirements of road transportation and the customer's demand for lightweight, and greatly improves the economic benefits.

[0035] Specifically, the supporting device 4 includes a supporting frame 41 and two supporting legs 42 .

[0036] See also Figure 4 The support frame 41 includes two left and right opposite leg connection brackets 411, two support top plates 412, a connecting beam 413 fixedly connected between the two leg connection brackets 411, and two reinforcing plates 414.

[0037] The two legs connecting the brackets 411 are symmetrical structures and arranged symmetrically on the left and right.

[0038] See also Figure 5 Each leg connecting bracket 411 includes a connecting bracket main body 4111, a reinforcement body 4112 and a side folding edge 4113.

[0039] The connecting bracket body 4111 is an integrally formed structure, mainly including a main body 4115, an extension 4117 extending downward from the main body 4115, a mounting portion 4116 extending backward from the main body 4115, and a connecting portion connected between the extension 4117 and the mounting portion 4116. The extension 4117 and the mounting portion 4116 are perpendicular to each other, and the rear end of the mounting portion 4116 extends backward beyond the extension 4117, so that the connecting portion has an inclined edge. The connecting portion is triangular in shape, has good stability, and thus increases the overall rigidity of the connecting bracket body 4111.

[0040] The main body 4115 is provided with an elongated hole.

[0041] A plurality of assembly holes 4118 are provided on the assembly portion 4116. The plurality of assembly holes 4118 are distributed into at least one group, and each group of assembly holes 4118 is distributed at intervals along the longitudinal direction. In this embodiment, the assembly holes 4118 are arranged in an array of 2 rows × 5 columns. That is, two groups of assembly holes 4118 are included, and each group of assembly holes 4118 includes five assembly holes 4118 distributed at intervals along the longitudinal direction. Two groups of mounting holes 4119 are provided on the extension portion 4117, and the two groups of mounting holes 4119 are arranged at intervals along the longitudinal direction and are respectively located on both sides of the elongated hole. Each group of mounting holes 4119 includes a plurality of mounting holes 4119 spaced apart in the height direction. The extension portion 4117 and the assembly portion 4116 are perpendicular to each other, so that each group of mounting holes 4119 and the assembly hole 4121 are perpendicular to each other, and the assembly hole 4121 is located at the rear end of the mounting hole 4119 in the longitudinal direction.

[0042] A triangular weight-reducing hole is provided on the connection portion to reduce the weight of the connection bracket body 4111 .

[0043] The reinforcement body 4112 is formed at the inclined edge of the connection portion. The reinforcement bodies 4112 of the two leg connection brackets 411 extend relative to each other and are respectively perpendicular to their respective connection bracket bodies 4111 , and a supporting structure is formed between the top of the reinforcement body 4112 and the assembly portion 4116 .

[0044] The side fold 4113 is extended and formed on one side of the connecting bracket body 4111 relative to the reinforcing body 4112, and the side folds 4113 of the two connecting bracket bodies 4111 are arranged facing each other. The arrangement of the side fold 4113 strengthens the structural stability of the connecting bracket body 4111.

[0045] The two support top plates 412 are respectively placed flat and fixed on the upper ends of the two leg connection brackets 411. Specifically, the support plate is provided with a plurality of assembly holes 4121. The fasteners penetrate the assembly holes 4121 and the bolt holes on the support 12 to achieve the detachable connection between the support device 4 and the tank body 1.

[0046] In the lateral direction, both sides of the support top plate 412 exceed the connecting bracket body 4111. The length direction of the support top plate 412 extends in the longitudinal direction, and its rear end does not exceed the rear end of the assembly portion 4116. Preferably, the rear end of the support top plate 412 extends to the front assembly hole 4118 on the assembly portion 4116.

[0047] The connecting crossbeam 413 is located in the middle and lower part of the two-leg connecting bracket 411, so that there is a gap between the connecting crossbeam 413 and the supporting top plate 412. That is, the connecting crossbeam 413 is fixedly connected to the lower part of the main body 4115 of the connecting bracket body 4111 and the middle and upper part of the extension part 4117, thereby increasing the overall rigidity of the support frame 41. By lowering the connecting crossbeam 413, the connecting crossbeam 413 is closer to the center of gravity of the leg 42 above the ground, which better meets the force condition of the leg 42 and enhances the overall stability of the support device 4.

[0048] Along the longitudinal direction, the connecting crossbeam 413 is located between the two groups of mounting holes 4119 on the extension portion 4117. Specifically, the two groups of mounting holes 4119 are symmetrically arranged about the connecting crossbeam 413.

[0049] See also Figure 6 The connecting cross beam 413 includes a Z-shaped cross beam body 4131 and an extending edge 4132 extending upward from the top of the cross beam body 4131. Specifically, the cross beam body 4131 includes a web 4136, and an upper flange plate 4137 and a lower flange plate 4138 respectively bent and extended from the upper and lower ends of the web 4136, and the upper flange plate 4137 and the lower flange plate 4138 are arranged on both sides of the web 4136. The web 4136 is also provided with a plurality of weight-reducing holes.

[0050] The extended edge 4132 is formed by extending the top of the upper flange plate 4137 upward, and the extended edge 4132 is parallel to the web plate 4136. The provision of the extended edge 4132 increases the rigidity of the connecting cross beam 413.

[0051] There is a gap between the top of the extension edge 4132 and the support top plate 412, so that there is a gap between the connecting beam 413 and the support top plate 412. Specifically, along the height direction, the top of the extension edge 4132 does not exceed the bottom of the elongated hole.

[0052] Two reinforcing plates 414 are respectively arranged between each supporting top plate 412 and the connecting crossbeam 413, that is, reinforcing plates 414 are arranged at both ends of the connecting crossbeam 413, and the two reinforcing plates 414 are spaced apart from each other and form an accommodation space therebetween. The accommodation space is convenient for accommodating the pipeline of the tank body 1, effectively solving the problem of interference between the pipeline at the bottom of the tank body 1 and the supporting device 4, and facilitating the arrangement of the pipeline.

[0053] See also Figure 7The reinforcing plate 414 includes a right-angled trapezoidal reinforcing main plate 4141 and a reinforcing folded edge 4142 formed by bending the oblique side of the reinforcing main plate 4141 .

[0054] The width of the reinforcing main board 4141 gradually increases from the top to the bottom, so that the reinforcing main board 4141 has an inclined edge. A triangular weight-reducing hole is provided on the reinforcing main board 4141 to reduce the weight of the supporting frame 41 .

[0055] The reinforcing folded edge 4142 is located at the inclined edge of the reinforcing main plate 4141, and the reinforcing folded plate is bent in a direction away from the connecting beam 413, and the reinforcing folded edges 4142 of the two reinforcing plates 414 are arranged opposite to each other, so that the accommodating space between the two reinforcing plates 414 gradually decreases from top to bottom.

[0056] The top of the reinforcing main board 4141 is bonded and fixed to the supporting top board 412, one side of the bottom of the reinforcing main board 4141 is affixed and bonded to the extended edge 4132 of the cross beam, and the right-angled edge of the reinforcing main board 4141 is bonded and fixed to the leg connecting bracket 411. In this embodiment, the reinforcing main board 4141 is bonded and fixed to the supporting top board 412, the extended edge 4132 and the leg connecting bracket 411 respectively by welding connection. In other embodiments, the fixing can also be achieved by various adhesives, and the connection strength after fixing meets the requirements.

[0057] In this embodiment, the support frame 41 is made of aluminum alloy, which reduces the weight of the support device 4 by more than 60% compared with the traditional carbon steel material. The test and finite element analysis prove that the structure and material combination of the support device 4 can meet the strength requirements. At the same time, according to user feedback, the structure of the support device 4 is stable and meets the use requirements.

[0058] The two legs 42 are detachably connected to the outside of the two leg connection brackets 411. Specifically, the legs 42 include a leg body and a leg mounting plate. The leg mounting plate is provided with a connection hole adapted to the mounting hole 4119. When the legs 42 are assembled with the support frame 41, the connection hole is aligned with the mounting hole 4119, and the fasteners are passed through the connection hole and the mounting hole 4119.

[0059] When the support device 4 and the frame body 3 are assembled, the two longitudinal beams 31 are accommodated in the inner side of the leg connection bracket 411, the web of the longitudinal beam 31 is fitted with the inner side of the assembly part 4116, and the adapted fasteners are inserted into the assembly hole 4118 and the connection hole on the longitudinal beam 31. The frame body 3 moves forward and backward relative to the leg connection bracket 411 through the connection hole on the longitudinal beam 31 to adjust the longitudinal overlap length of the longitudinal beam 31 and the assembly part 4116, that is, the longitudinally movable adaptive assembly is performed, thereby achieving the length adjustment of the frame body 3 within a certain range to meet different wheelbases L, that is, the center distance between the traction module 2 and the first axle of the tank transport semi-trailer 100. The design of the connection hole on the longitudinal beam 31 as a waist-shaped hole provides a larger activity space for the fasteners, and can achieve the front and rear fine adjustment of the installation position of the longitudinal beam 31 to better meet the wheelbase adjustment.

[0060] During the assembly process of the support device 4 with the frame body 3 , the support structure formed between the top of the reinforcement body 4112 and the assembly portion 4116 supports the longitudinal beam 31 , thereby increasing the support of the support device 4 to the frame body 3 and dispersing the load of the frame body 3 .

[0061] The front end of the longitudinal beam 31 abuts against the rear end of the support top plate 412, and the upper end surface of the top wall of the longitudinal beam 31 is flush with the upper end surface of the support top plate 412. In this way, the support top plate 412 abuts against the longitudinal beam 31, so that the support top plate 412 disperses the load of the frame body 3 along the longitudinal direction, which is beneficial to maintain the connection stability between the support device 4 and the frame body 3.

[0062] The support frame 41 and the two legs 42 of the support device 4 are three independent modules, so the support device 4 has a small number of parts, a simple structure, is relatively easy to install, and has a high degree of standardization.

[0063] It can be seen from the above technical solution that the advantages and positive effects of the present invention are:

[0064] The support device of the present invention includes a support frame and two legs. The support frame includes two leg connection brackets opposite to each other, two support top plates respectively placed flat and fixed to the upper ends of the two leg connection brackets, and a connecting crossbeam fixedly connected between the two leg connection brackets. The connecting crossbeam is located in the middle and lower part of the two leg connection brackets. By lowering the position of the connecting crossbeam, the connecting crossbeam is closer to the center of gravity of the legs above the ground, which better meets the force conditions of the legs and enhances the overall stability of the support device. The lowering of the position of the connecting crossbeam allows a gap to exist between the connecting crossbeam and the support top plate, thereby facilitating the pipes of the tank body, effectively solving the problem of interference between the pipes at the bottom of the tank body and the support device, and facilitating the arrangement of the pipes. The support frame and the two legs are three independent modules, so the support device has a small number of parts, a simple structure, is relatively easy to install, and has a high degree of standardization.

[0065] The tank transport semi-trailer of the present invention comprises a tank body, a traction module, a frame body and a supporting device which are independent of each other, so that the tank transport semi-trailer can be manufactured and transported separately, which reduces the difficulty of manufacturing and logistics transportation and improves the economic benefits.

[0066] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A supporting device for a tank transport semi-trailer, characterized in that: include: The support frame comprises two left and right opposite leg connection brackets, two support top plates respectively placed flat and fixed to the upper ends of the two leg connection brackets, and a connecting crossbeam fixedly connected between the two leg connection brackets; the connecting crossbeam is located at the middle and lower parts of the two leg connection brackets so that there is a gap between the connecting crossbeam and the support top plate; the leg connection bracket is used to be detachably connected to the frame body, and the frame body comprises a longitudinal beam; The two legs are detachably connected to the outer sides of the two leg connecting brackets; the leg connecting bracket includes: a connecting bracket body and a reinforcement body formed on one side of the lower part of the connecting bracket body; the reinforcement bodies of the two leg connecting brackets extend relative to each other and are respectively perpendicular to their respective connecting bracket bodies, and the connecting bracket body forms an assembly portion above the reinforcement body, and the inner side of the assembly portion is used to fit with the web of the longitudinal beam; the assembly portion and the top of the reinforcement body form a supporting structure.

2. The supporting device for a tank transport semitrailer according to claim 1, characterized in that: A reinforcing plate is respectively arranged between each of the supporting top plates and the connecting cross beam, and the reinforcing plate is respectively fixed to the connecting cross beam, the supporting top plate and the supporting leg connecting bracket, and the two reinforcing plates are spaced apart from each other and form an accommodating space therebetween.

3. The supporting device for a tank transport semitrailer according to claim 2, characterized in that: The reinforcing plate includes a right-angled trapezoidal reinforcing main board and a reinforcing folded edge formed by bending the oblique side of the reinforcing main board, the reinforcing folded edge is bent in a direction away from the connecting cross beam, and the reinforcing folded edges of the two reinforcing plates are arranged opposite to each other, the top of the reinforcing main board is fixed to the supporting top plate, and the other end of the reinforcing main board relative to the reinforcing folded edge is fixed to the leg connecting bracket.

4. The supporting device for a tank transport semitrailer according to claim 3, characterized in that: The connecting crossbeam comprises a Z-shaped crossbeam body and an extending edge extending upward from the top of the crossbeam body, and the extending edge is attached and bonded to one side of the bottom of the reinforcing plate main board.

5. The supporting device for a tank transport semitrailer according to claim 1, characterized in that: The reinforcing body is inclined relative to the supporting top plate so that the connecting bracket body forms a structure with a narrowed bottom.

6. The supporting device for a tank transport semitrailer according to claim 5, characterized in that: The two connecting bracket bodies extend toward each other at opposite sides of the reinforcing body to form side folded edges.

7. The supporting device for a tank transport semitrailer according to claim 1, characterized in that: The support top plate is provided with a plurality of assembly holes; A plurality of assembly holes are provided at positions opposite to the top of the two leg connection brackets; Each of the leg connecting brackets is provided with a group of mounting holes on both sides of the connecting crossbeam, and each group of the mounting holes is used for connecting the legs.

8. The supporting device for a tank transport semitrailer according to claim 7, characterized in that: The plurality of assembly holes are distributed into at least one group, and each group of assembly holes is distributed at intervals along the longitudinal direction; The plurality of assembly holes and each group of mounting holes are perpendicular to each other.

9. A tank transport semi-trailer, characterized in that: include: A tank body, a traction module, a frame body, and a supporting device as described in any one of claims 1 to 7; The supporting top plate of the supporting device is detachably connected to the tank body, the supporting leg connecting bracket of the supporting device is detachably connected to the frame body, and there is a gap between the traction module and the supporting device.

10. The tank transport semitrailer according to claim 9, characterized in that: The frame body comprises two parallel and oppositely arranged longitudinal beams, each of which has at least one row of connection holes spaced apart in the longitudinal direction at the front end, and the longitudinal beams and the supporting device are movably adapted and assembled in the longitudinal direction through their respective connection holes and assembly holes.

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