Transportation device for long cylindrical large objects

Abstract

The utility model discloses a long cylinder type large object transporting device which comprises at least two supporting and transferring mechanisms and a plurality of adjusting frames, the supporting and transferring mechanisms are used for carrying long cylinder type large objects to be transported, and every two adjacent supporting and transferring mechanisms are connected through the corresponding adjusting frame so that the overall length of the transporting device can be adjusted. The supporting and transferring mechanism comprises a frame body, a transverse return assembly, a bearing assembly and a rotary return assembly; the side portion of the frame body is connected with the adjusting frame, the transverse return assembly, the rotary return assembly and the bearing assembly are sequentially arranged at the top of the frame body in the vertical direction, the bearing assembly is used for carrying the long cylindrical large object to be transported, the transverse return assembly is used for driving the bearing assembly to transversely move, and the rotary return assembly is used for driving the bearing assembly to rotate and move. The device has the advantages of being compact in structure, convenient to operate, high in adjusting flexibility and the like, and the efficiency of transferring the large cylindrical objects is improved.

Description

Technical Field

[0001] This utility model belongs to the field of large object transfer technology, specifically relating to a transport device for long cylindrical large objects. Background Technology

[0002] There are various ways to transport large items. Some vehicles have very long cargo boxes, while others have a cannon behind the cargo box. These are all designed for transporting large or long items.

[0003] Ordinary flatbed trucks are designed with turntables connecting the cab and the front of the cargo box to ensure smooth turning and create an inner wheel difference during turns. Because the cargo box is generally welded as a single piece, and the axle is located at the front of the box, the box remains rigid during turns. Therefore, goods loaded on the box are not subjected to harmful forces from the box during turns. However, the standard flatbed length is 17.5 meters, and the presence of uneven planks limits the effective length of the box. Long cylindrical items exceeding this size cannot be transported by the truck and require extended special vehicles.

[0004] Another common transportation method in factories is the use of multiple intermediate frames and two end supports. The intermediate frames are usually connected in a quick-connection manner for easy disassembly, and the direction of movement is generally longitudinal. This transportation method has several problems: (1) Since the goods being transported are long and generally heavy, omnidirectional wheels are not used for movement. The omnidirectional wheels are affected by inertia and the dimensions of the vehicle body structure during lateral movement, which poses a risk of instability; (2) During longitudinal movement, when the support at the traction end turns, a certain angle is generated between the rear support and the front support. The larger the turning angle, the larger the angle; (3) Since the intermediate frame is composed of multiple connecting frames, during the turning process, the inner side of the connecting frame is subjected to pressure and the outer side is subjected to tension, causing the intermediate frame to become arc-shaped. The force generated by this deformation is directly transmitted to the long cylindrical object. When the deformation is large, it will cause damage to the long cylindrical object. Utility Model Content

[0005] The technical problem this utility model aims to solve is to provide a compact, easy-to-operate, and highly flexible transport device for large, elongated cylindrical objects, addressing the aforementioned shortcomings of existing technologies. To achieve this objective, the present utility model can adopt the following technical solution:

[0006] A transport device for a long cylindrical object includes at least two supporting transfer mechanisms and multiple adjusting frames. The supporting transfer mechanisms are used to carry the long cylindrical object to be transported, and adjacent supporting transfer mechanisms are connected by adjusting frames to adjust the overall length of the transport device.

[0007] The supporting transfer mechanism includes a frame body, a lateral return assembly, a support assembly, and a rotary return assembly. The side of the frame body is connected to an adjustment frame. The lateral return assembly, the rotary return assembly, and the support assembly are arranged sequentially on the top of the frame body along the vertical direction. The support assembly is used to carry the long cylindrical object to be transported. The lateral return assembly is used to drive the support assembly to move laterally, and the rotary return assembly is used to drive the support assembly to rotate.

[0008] As a further improvement of this utility model, the supporting transfer mechanism also includes a traction steering assembly, which is disposed on the side of the vehicle frame and located at the end of the transport device. The traction steering assembly is used to drag the vehicle frame and the adjustment frame to move, so as to realize the transport of long cylindrical large objects.

[0009] As a further improvement of this utility model, the traction steering assembly includes a drawbar, a rocker arm, a control lever, and traction steering wheels. The traction steering wheels are located at the four corners of the bottom of the vehicle frame. The two ends of the rocker arm are hinged to the drawbar and the control lever, respectively. The control lever is laterally located inside the vehicle frame, and its two ends are connected to both sides of the vehicle frame. The control lever is connected to the traction steering wheels on both sides of the front end of the vehicle frame via a steering arm. In use, the drawbar transmits traction force to the control lever through the rocker arm, which then drives the traction steering wheels to rotate through the steering arm.

[0010] As a further improvement of this utility model, the traction steering assembly also includes a positioning pin; when the vehicle frame is located in the middle or rear of the transport device, the rocker arm is connected to the vehicle frame through the positioning pin to fix the rotation direction of the traction steering wheel.

[0011] As a further improvement of this utility model, the frame body includes a frame body, and the top two sides of the frame body are provided with flat plates. The transverse return component is provided on the top of the frame body and located between the two flat plates. The side of the frame body is provided with guide pin holes and connecting bolt holes, which are used to connect the adjustment frame.

[0012] As a further improvement of this utility model, the transverse return component includes a slide rail and a fixed plate. Two parallel slide rails are arranged transversely on the top of the frame. The bottom of the fixed plate is slidably connected to the slide rails via a slider. The rotary return component is arranged on the top of the fixed plate. The fixed plate drives the rotary return component and the support component to move transversely along the slide rails.

[0013] As a further improvement of this utility model, the top two sides of the frame are respectively provided with first adjustment components; the lateral return component also includes a lateral return spring and a first fixed seat. The first fixed seat is set at the bottom of the fixed plate and located between two parallel slide rails. One end of the lateral return spring is connected to the first adjustment component, and the other end of the lateral return spring is connected to the first fixed seat. The lateral return spring is used to assist the fixed plate in driving the rotation return component and the support component to return to the middle position near the top of the frame.

[0014] As a further improvement of this utility model, the rotary return assembly includes an inner ring, a ball bearing, and an outer ring. The outer ring is connected and fixed to a fixed plate. A ball bearing drive is provided between the outer side of the inner ring and the inner side of the outer ring. The support assembly is located at the top of the inner ring, and the inner ring drives the support assembly to rotate.

[0015] As a further improvement of this utility model, the rotation return assembly further includes a rotation center spring, a center positioning pin, a second adjustment assembly, and a second fixed seat. The second adjustment assembly is disposed on the outer ring, and the second fixed seat is disposed on the inner ring. One end of the rotation center spring is connected to the second adjustment assembly, and the other end of the rotation center spring is connected to the second fixed seat. The rotation center spring and the center positioning pin are used to assist the inner ring in driving the support assembly to rotate back to the vicinity of the center position at the top of the frame.

[0016] As a further improvement of this utility model, the support assembly includes a support member, a frame beam, a height adjustment member, a base connecting plate, and a bracket; the support member is disposed on the top of the frame beam to support large long cylindrical objects, the lower part of the frame beam is connected to the top of the bracket through the height adjustment member, and the base connecting plate is disposed at the bottom of the bracket to connect to the rotation return assembly.

[0017] As a further improvement of this utility model, the adjustment frame includes movable wheels, guide posts, a frame body, and guide holes; the movable wheels are located at the four corners of the bottom of the frame body, and guide posts and guide holes are respectively provided on both sides of the frame body, so as to realize the connection of two adjustment frames or the connection of the adjustment frame to the vehicle frame body.

[0018] Compared with the prior art, the advantages of this utility model are:

[0019] This utility model discloses a transport device for large, elongated cylindrical objects. It utilizes a support and transfer mechanism to mount the object and connects adjacent support and transfer mechanisms via adjusting frames. The number of adjusting frames and support and transfer mechanisms can be flexibly increased according to the actual length of the object, thus adjusting the overall length of the transport device while providing more reliable support for the object. Furthermore, the support and transfer mechanism is compactly structured by a frame body, a lateral return assembly, a support assembly, and a rotary return assembly. Furthermore, the lateral return assembly, the rotary return assembly, and the support assembly are arranged vertically on the top of the vehicle frame. The support assembly carries the long cylindrical object to be transported. The lateral return assembly drives the support assembly to move laterally, enabling the support assembly to move left and right on the vehicle frame. This reduces the reverse force of the long cylindrical object on the support assembly when turning and changing to straight-line driving. The rotary return assembly drives the support assembly to rotate and move at a certain angle to eliminate the turning angle between the support assembly and the long cylindrical object, thus improving the safety of transferring and transporting the cylindrical object. Attached Figure Description

[0020] Figure 1 This is a schematic diagram illustrating the structural principle of the transport device for a large, elongated cylindrical object in a specific embodiment of this utility model.

[0021] Figure 2 This is a schematic diagram illustrating the structural principle of the multi-support component in a specific embodiment of this utility model;

[0022] Figure 3 This is a schematic diagram illustrating the assembly structure principle of the traction and steering assembly and the vehicle frame in a specific embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the structural principle of the support component in a specific embodiment of this utility model;

[0024] Figure 5 This is a schematic diagram illustrating the structural principle of the length adjustment frame in a specific embodiment of this utility model;

[0025] Figure 6 This is a schematic diagram of the structural principle of the length adjustment frame from another perspective in a specific embodiment of the present utility model; wherein, Figure (a) is a top view and Figure (b) is a schematic diagram of the structural principle along direction AA in Figure (a);

[0026] Figure 7 Figure 1 is a schematic diagram of the structural principle of the return component in a specific embodiment of the present utility model; wherein, Figure (a) is a schematic diagram of the three-dimensional structural principle, Figure (b) is a schematic diagram of the right view of Figure (a) and Figure (c) is a schematic diagram of the left view of Figure (a).

[0027] Legend: 10. Traction and steering assembly; 20. Frame body; 30. Lateral return assembly; 40. Support assembly; 50. Adjustment frame; 60. Rotary return assembly; 11. Traction rod; 12. Rocker arm; 13. Positioning pin; 14. Control lever; 15. Traction and steering wheel; 21. Frame body; 22. First adjustment assembly; 23. Flat plate; 24. Guide pin hole; 25. Connecting bolt hole; 31. Slide rail; 32. Fixing plate; 33. Lateral return spring; 34. 41. Fixed base; 42. Support component; 43. Frame beam; 44. Ratchet screw assembly; 45. T-shaped screw; 46. Base connecting plate; 57. Bracket; 58. Moving wheel; 59. Guide post; 50. Left frame; 51. Right frame; 52. Guide hole; 53. Quick-release pin; 64. Inner ring; 65. Ball bearing; 66. Outer ring; 67. Rotary center spring; 68. Center positioning pin; 69. Second adjustment assembly; 60. Second fixed base; 101. Long cylindrical large object. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0029] In the description of this utility model, it should be understood that the terms "side", "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0031] Example

[0032] like Figure 1As shown, the transportation device for a long cylindrical object of this utility model includes two supporting transfer mechanisms and multiple adjusting frames 50. The supporting transfer mechanisms are used to carry the long cylindrical object 100 to be transported, and the two supporting transfer mechanisms are connected by adjusting frames 50 to adjust the overall length of the transportation device.

[0033] Furthermore, the supporting transfer mechanism includes a frame body 20, a lateral return assembly 30, a support assembly 40, and a rotary return assembly 60. The side of the frame body 20 is connected to the adjustment frame 50. The lateral return assembly 30, the rotary return assembly 60, and the support assembly 40 are arranged vertically on the top of the frame body 20. The support assembly 40 is used to carry the long cylindrical object 100 to be transported. The lateral return assembly 30 is used to drive the support assembly 40 to move laterally, and the rotary return assembly 60 is used to drive the support assembly 40 to rotate.

[0034] like Figure 2 As shown, multiple vehicle frames 20 and multiple adjustment frames 50 can be spliced ​​together according to the actual transportation needs of the long cylindrical large object 100, so as to improve the transportation efficiency and transportation safety of the long cylindrical large object 100.

[0035] In this embodiment, a support and transfer mechanism is used to carry the long cylindrical object 100 to be transported. An adjustment frame 50 is set between two adjacent support and transfer mechanisms for connection. The number of adjustment frames 50 and the number of support and transfer mechanisms can be flexibly increased according to the actual length of the long cylindrical object 100. This not only adjusts the overall length of the transport device, but also provides more reliable support for the long cylindrical object 100. Furthermore, a compact support and transfer mechanism is formed by the frame body 20, the lateral return assembly 30, the support assembly 40, and the rotary return assembly 60. The lateral return assembly 30, the rotary return assembly 60, and the support assembly 40 are arranged vertically on the top of the frame body 20. The support assembly 40 carries the long cylindrical object 100 to be transported. The lateral return assembly 30 drives the support assembly 40 to move laterally, realizing the left and right movement of the support assembly 40 on the frame body 20. This reduces the reverse force of the long cylindrical object 100 on the support assembly 40 when turning and changing to straight-line driving. The rotary return assembly 60 drives the support assembly 40 to rotate and move at a certain angle to eliminate the turning angle between the long cylindrical object 100 and the support assembly 40, thereby improving the safety of the transfer and transportation of the cylindrical object 100.

[0036] like Figure 1As shown, the supporting transfer mechanism also includes a traction steering assembly 10. The traction steering assembly 10 is disposed on the side of the frame body 20, and the traction steering assembly 10 and the adjusting frame 50 are respectively disposed on opposite sides of the frame body 20. In this embodiment, the traction steering assembly 10 is located at the end of the transport device, and the traction steering assembly 10 is used to drag the frame body 20 and the adjusting frame 50 to move, so as to realize the transport of the long cylindrical large object 100.

[0037] like Figure 3 As shown, the traction steering assembly 10 includes a drawbar 11, a rocker arm 12, a control lever 14, and traction steering wheels 15. The traction steering wheels 15 are located at the four corners of the bottom of the chassis 20. The two ends of the rocker arm 12 are hinged to the drawbar 11 and the control lever 14, respectively. The control lever 14 is laterally positioned inside the chassis 20, with both ends connected to the sides of the chassis 20. The control lever 14 is also connected to the traction steering wheels 15 on both sides of the front end of the chassis 20 via steering arms (not shown). In use, the drawbar 11 transmits traction force to the control lever 14 via the rocker arm 12, which then drives the traction steering wheels 15 to rotate via the steering arms. The traction steering wheels 15 can be in the form of casters to improve the flexibility of traction steering.

[0038] Furthermore, the traction steering assembly 10 also includes a locating pin 13. When the frame body 20 is located in the middle or rear of the transport device, the rocker arm 12 is connected to the frame body 20 via the locating pin 13 to fix the rotation direction of the traction steering wheel 15.

[0039] Specifically, the working principle of the traction and steering assembly 10 can be found in the load-bearing slewing traction mechanism in the prior art CN104002862A.

[0040] like Figure 3 As shown, the frame body 20 includes a frame structure 21. Flat plates 23 are provided on both sides of the top of the frame body 21, and a lateral return assembly 30 is disposed on the top of the frame body 21, located between the two flat plates 23. Guide pin holes 24 and connecting bolt holes 25 are provided on the side of the frame body 21. The guide pin holes 24 and connecting bolt holes 25 are used to connect the adjustment frame 50 to facilitate adjustment of the overall length of the transport device.

[0041] like Figure 7 As shown, the lateral return assembly 30 includes a slide rail 31 and a fixing plate 32. Two parallel slide rails 31 are arranged laterally on the top of the frame 21. The bottom of the fixing plate 32 is slidably connected to the slide rails 31 via a slider (not shown in the figure). The rotation return assembly 60 is arranged on the top of the fixing plate 32. The fixing plate 32 drives the rotation return assembly 60 and the support assembly 40 to move laterally along the slide rails 31.

[0042] like Figure 3 As shown, two first adjustment components 22 are respectively provided on the left and right sides of the top of the frame 21. Figure 7 As shown, the lateral return assembly 30 also includes four lateral return springs 33 and four first fixed seats 34. The first fixed seats 34 are located at the bottom of the fixed plate 32 and between the two parallel slide rails 31. One end of the lateral return spring 33 is connected to the first adjusting assembly 22, and the other end of the lateral return spring 33 is connected to the first fixed seat 34. The lateral return spring 33 is used to assist the fixed plate 32 in driving the rotary return assembly 60 and the supporting assembly 40 back to the center position near the top of the frame 21. The four lateral return springs 33 are arranged in pairs, and the extension and contraction directions of the two pairs of lateral return springs 33 are opposite. Through the elastic force provided by the lateral return springs 33, the rotary return assembly 60 can be controlled to return to the center position after lateral movement. By designing the lateral return springs 33 to always move near the center position of the frame 21, the center of gravity of the frame is returned to the center after turning left or right, so as to eliminate or reduce displacement and reduce the damage to the long cylindrical large object 100 caused by the frame body 20 during transportation.

[0043] like Figure 7 As shown, the rotary return assembly 60 includes an inner ring 61, a ball bearing 62, and an outer ring 63. The outer ring 63 is connected and fixed to the fixed plate 32. The ball bearing 62 is provided between the outer side of the inner ring 61 and the inner side of the outer ring 63 for transmission. The support assembly 40 is set on the top of the inner ring 61, and the inner ring 61 drives the support assembly 40 to rotate.

[0044] like Figure 7 As shown, the rotation return assembly 60 also includes a rotation center spring 64, a center positioning pin 65, a second adjusting assembly 66, and a second fixed seat 67. Two second adjusting assemblies 66 are symmetrically arranged on both sides of the outer ring 63, and two second fixed seats 67 are symmetrically arranged on both sides of the inner ring 61. One end of the rotation center spring 64 is connected to the second adjusting assembly 66, and the other end is connected to the second fixed seat 67. During the rotation of the inner ring 61, the extension and retraction directions of the two rotation center springs 64 are opposite. The center positioning pin 65 is located on the side of the rotation center spring 64 and, through the rotation center spring 64 and the center positioning pin 65, assists the inner ring 61 in rotating the support assembly 40 back to the vicinity of the center position at the top of the frame 21.

[0045] In this embodiment, the structure and working principle of the rotary return assembly 60 are similar to those of a bearing structure turntable. The outer ring 63 is connected to the fixed plate 32, while only the inner ring 61 is kept rotating. The return force provided by the rotary center spring 64 controls the return of the support assembly 40 after rotation and movement.

[0046] In this embodiment, both the first adjusting component 22 and the second adjusting component 66 adopt the form of adjusting screws, which can change the magnitude of the spring force to adapt to the transfer of long cylindrical objects 100 of different weights. The cooperation between the lateral return component 30 and the rotary return component 60 helps to maintain the long cylindrical object 100 in a free or initially fixed state during turning, minimizing or eliminating the influence of the frame 20 and reducing damage to the long cylindrical object 100 during transfer.

[0047] like Figure 4 As shown, the support assembly 40 includes a support member 41, a frame beam 42, a ratchet screw assembly 43, a T-shaped screw 44, a base connecting plate 45, and a bracket 46. The support member 41 is located on top of the frame beam 42 to support the long cylindrical object 100. The support member 41 can be made of soft yet sturdy pine wood, and its shape is designed to match the curvature of the long cylindrical object 100. Soft sponge or rubber sheets can be added to the contact surface to better fit the curved surface and reduce vibration. The frame beam 42 serves to fix and support the support member 41. The lower part of the frame beam 42 is connected to the top of the bracket 46 via the ratchet screw assembly 43 and the T-shaped screw 44. The ratchet screw assembly 43 and the T-shaped screw 44 are used to adjust the height of the support member 41 and are the main load-bearing components. The bracket 46 is the basic component of this assembly, welded together with the base connecting plate 45, and fixed to the inner ring 61 using standard components such as connecting bolts.

[0048] like Figure 5 As shown, the adjustment frame 50 includes casters 51, guide posts 52, a frame body, and guide holes 55. The casters 51 are located at the four corners of the bottom of the frame body, and can be in the form of casters, allowing for easy direction changes during overall movement, thus stabilizing the transport device. The frame body consists of a left frame 53 and a right frame 54. The core function of the adjustment frame 50 is to connect to the vehicle frame 20; as shown... Figure 6 The adjustment bracket 50 shown is formed by inserting the left frame 53 into the right frame 54 and connecting the two frames with quick-connect pins 56. Multiple sets of pin holes are designed at the connection point between the left frame 53 and the right frame 54, allowing for adjustment of the total length of the adjustment bracket 50 within a certain range. Guide posts 52 are designed on the end face of the left frame 53, and guide holes 55 are designed on the end face of the right frame 54. During connection, alignment can be easily and accurately achieved using the guide posts 52 and guide holes 55, simplifying the operation.

[0049] For situations where the transported items are weak and easily deformed under external forces, but require frequent transportation or relocation of workstations (such as pulsed production lines), the transport device in this embodiment can eliminate or reduce the angle and displacement between the support component 40 and the frame 20 during the turning process, so that the support component 40 is not affected by external forces, reducing the deformation of the transported items caused by harmful forces.

[0050] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the spirit and technical essence of the present invention. Therefore, any simple modifications, equivalent substitutions, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the technical solutions of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A transport device for large, elongated cylindrical objects, characterized in that, It includes at least two support transfer mechanisms and multiple adjustment frames (50). The support transfer mechanisms are used to carry long cylindrical large objects (100) to be transported, and adjacent support transfer mechanisms are connected by adjustment frames (50) to adjust the overall length of the transport device. The supporting transfer mechanism includes a frame body (20), a lateral return assembly (30), a support assembly (40), and a rotary return assembly (60); the side of the frame body (20) is connected to the adjustment frame (50), the lateral return assembly (30), the rotary return assembly (60), and the support assembly (40) are arranged sequentially on the top of the frame body (20) in a vertical direction, the support assembly (40) is used to carry the long cylindrical large object (100) to be transported, the lateral return assembly (30) is used to drive the support assembly (40) to move laterally, and the rotary return assembly (60) is used to drive the support assembly (40) to rotate.

2. The transport device for large cylindrical objects according to claim 1, characterized in that, The supporting transfer mechanism also includes a traction steering assembly (10), which is disposed on the side of the frame body (20) and located at the end of the transport device. The traction steering assembly (10) is used to drag the frame body (20) and the adjustment frame (50) to move, so as to realize the transport of long cylindrical large objects (100).

3. The transport device for large cylindrical objects according to claim 2, characterized in that, The traction steering assembly (10) includes a traction rod (11), a rocker arm (12), a control lever (14), and a traction steering wheel (15). The traction steering wheel (15) is located at the four corners of the bottom of the frame body (20). The two ends of the rocker arm (12) are hinged to the traction rod (11) and the control lever (14) respectively. The control lever (14) is arranged laterally inside the frame body (20). The two ends of the control lever (14) are connected to the two sides of the frame body (20) respectively. The control lever (14) is connected to the traction steering wheels (15) on both sides of the front end of the frame body (20) through the steering arm. In use, the traction rod (11) transmits the traction force to the control lever (14) through the rocker arm (12), and then drives the traction steering wheel (15) to rotate through the steering arm.

4. The transport device for large cylindrical objects according to any one of claims 1 to 3, characterized in that, The frame body (20) includes a frame (21), and the top two sides of the frame (21) are provided with flat plates (23). The transverse return assembly (30) is set on the top of the frame (21) and located between the two flat plates (23). The side of the frame (21) is provided with guide pin holes (24) and connecting bolt holes (25). The guide pin holes (24) and connecting bolt holes (25) are used to connect the adjustment frame (50).

5. The transport device for large cylindrical objects according to claim 4, characterized in that, The transverse return assembly (30) includes a slide rail (31) and a fixing plate (32). Two parallel slide rails (31) are arranged transversely on the top of the frame (21). The bottom of the fixing plate (32) is slidably connected to the slide rail (31) by a slider. The rotary return assembly (60) is arranged on the top of the fixing plate (32). The fixing plate (32) drives the rotary return assembly (60) and the support assembly (40) to move transversely along the slide rail (31).

6. The transport device for large cylindrical objects according to claim 5, characterized in that, The top two sides of the frame (21) are respectively provided with first adjustment components (22); the transverse return component (30) also includes a transverse return spring (33) and a first fixed seat (34). The first fixed seat (34) is set at the bottom of the fixed plate (32) and located between two parallel slide rails (31). One end of the transverse return spring (33) is connected to the first adjustment component (22), and the other end of the transverse return spring (33) is connected to the first fixed seat (34). The transverse return spring (33) is used to assist the fixed plate (32) in driving the rotation return component (60) and the support component (40) to return to the middle position of the top of the frame (21).

7. The transport device for large cylindrical objects according to claim 5, characterized in that, The rotary return assembly (60) includes an inner ring (61), a ball bearing (62), and an outer ring (63). The outer ring (63) is connected and fixed to the fixing plate (32). A ball bearing (62) is provided between the outer side of the inner ring (61) and the inner side of the outer ring (63) for transmission. The support assembly (40) is located on the top of the inner ring (61). The inner ring (61) drives the support assembly (40) to rotate.

8. The transport device for large cylindrical objects according to claim 7, characterized in that, The rotation return assembly (60) further includes a rotation center spring (64), a center positioning pin (65), a second adjustment assembly (66), and a second fixed seat (67). The second adjustment assembly (66) is disposed on the outer ring (63), and the second fixed seat (67) is disposed on the inner ring (61). One end of the rotation center spring (64) is connected to the second adjustment assembly (66), and the other end of the rotation center spring (64) is connected to the second fixed seat (67). The rotation center spring (64) and the center positioning pin (65) are used to assist the inner ring (61) in driving the support assembly (40) to rotate back to the center position near the top of the frame (21).

9. The transport device for a large cylindrical object according to any one of claims 5 to 8, characterized in that, The support assembly (40) includes a support member (41), a frame beam (42), a height adjustment member, a base connecting plate (45), and a bracket (46); the support member (41) is located on the top of the frame beam (42) to support a long cylindrical object (100); the lower part of the frame beam (42) is connected to the top of the bracket (46) through the height adjustment member; and the base connecting plate (45) is located at the bottom of the bracket (46) to connect to the rotation return assembly (60).

10. The transport device for a large cylindrical object according to any one of claims 5 to 8, characterized in that, The adjustment frame (50) includes a movable wheel (51), a guide post (52), a frame body, and a guide hole (55); the movable wheel (51) is located at the four corners of the bottom of the frame body, and the guide post (52) and guide hole (55) are respectively provided on both sides of the frame body, so as to realize the connection of two adjustment frames (50) or the connection of the adjustment frame (50) to the vehicle frame body (20).

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