Frame assembly of carrier

Abstract

The frame assembly comprises a carrying frame and walking wheels, the four sets of walking wheels are installed at the bottom end of the carrying frame at equal intervals, a supporting sliding block is installed at the top end of the carrying frame, a servo motor is installed in the carrying frame, a rotating shaft is installed at the output end of the servo motor, and the supporting sliding block is installed at the output end of the rotating shaft. A rotating shaft is installed at the top end of the carrying vehicle frame and extends to the outer portion of the carrying vehicle frame, a rotating table is installed at the top end of the rotating shaft and movably connected with the supporting sliding block, a U-shaped frame is installed at the top end of the rotating table, and a small overturning arm is installed at the top end of the U-shaped frame. According to the frame assembly of the carrier, the position of an object can be conveniently adjusted at multiple angles for clamping, the clamped object can be conveniently adjusted in a multi-stage rotating mode, the rotating adjusting range during object clamping is widened, and the object clamping and conveying convenience of the frame assembly of the carrier is improved.

Description

Technical Field

[0001] This utility model relates to the field of chassis assembly technology, specifically to a chassis assembly for a transport vehicle. Background Technology

[0002] A material handling vehicle is a trackless vehicle used for short-distance transport of goods. Also known as an industrial vehicle, it is an important component of material handling machinery and is widely used in factories, warehouses, logistics centers, and other scenarios. The main function of a material handling vehicle is to transport and move goods. Some types also have stacking and loading / unloading functions. Material handling vehicles can significantly improve the efficiency of material handling, especially in large-scale production and logistics scenarios. By reducing reliance on manual labor, material handling vehicles can reduce labor costs and optimize resource allocation.

[0003] As disclosed in the authorization announcement number CN216636567U, the frame structure of an electric transport vehicle includes a transport vehicle body, a mounting frame fixedly installed on the outside of the transport vehicle body, a rotating shaft rotatably installed on the inside of the mounting frame, a main wheel fixedly sleeved on the outside of the rotating shaft, and lead screws rotatably installed on both sides of the main wheel on the inside of the mounting frame, a clamp fixedly connected to the lower end of a moving block, a limiting groove for engaging the moving block opened on the lower end face of the mounting frame, a mounting box fixedly installed on the outside of the transport vehicle body, multiple sets of drive mechanisms installed in the inner cavity of the mounting box, and a pressure sensor installed in the mounting box at the lower end of the drive mechanism.

[0004] Although it achieves the goal of automatically maintaining a slower speed when the transport vehicle is going downhill through a simple installation structure, thus avoiding safety hazards, and preventing the goods on the transport vehicle from falling to the ground due to the inertia of rapid sliding, ensuring the safe transportation of goods, its practical effect is excellent and it is worth promoting and using in the existing market.

[0005] However, this does not solve the problem that existing frame assemblies of this type are generally not conducive to convenient circular rotation for gripping items, are not convenient for adjusting the position of items at multiple angles, and are not convenient for multi-level rotation adjustment of gripping items, thus affecting the range of rotation adjustment when gripping items and the convenience of gripping and transporting items. Utility Model Content

[0006] The purpose of this utility model is to provide a chassis assembly for a transport vehicle, so as to solve the problems mentioned in the background art, which are that the chassis assembly is not convenient for easy circumferential rotation to clamp items, is not convenient for adjusting the position of items at multiple angles to clamp items, and is not convenient for multi-level rotation adjustment to clamp items, thus affecting the range of rotation adjustment when clamping items and affecting the convenience of clamping and transporting items.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a transport vehicle frame assembly, including a transport vehicle frame and wheels, wherein four sets of wheels with equal spacing are installed at the bottom of the transport vehicle frame, a support slider is installed at the top of the transport vehicle frame, a servo motor is installed inside the transport vehicle frame, a rotating shaft is installed at the output end of the servo motor and extends to the outside of the transport vehicle frame, a rotating platform is installed at the top of the rotating shaft and is movably connected to the support slider, a U-shaped frame is installed at the top of the rotating platform, a tilting arm is installed at the top of the U-shaped frame, a tilting arm is installed on the outer wall of the tilting arm, a tilting shaft is movably installed on the outer wall of the U-shaped frame and extends to the outside of the U-shaped frame and is connected to the tilting arm, a connecting frame is installed on the outer wall of the tilting arm away from the tilting arm, and a connecting plate is installed on the outer wall of the connecting frame.

[0008] Preferably, clamping arms are symmetrically arranged on the outer wall of the connecting plate, and a two-way cylinder is installed at the top of the connecting plate.

[0009] Preferably, each of the output ends of the bidirectional cylinder is equipped with a push rod, and each push rod is connected to the clamping arm at the adjacent end.

[0010] Preferably, a rear retaining pin is installed on the outer wall of the tilting arm, and an adjusting support block is movably fitted on the surface of the rear retaining pin. An adjusting threaded rod is movably installed inside the adjusting support block, and the adjusting threaded rod extends to the outside of the adjusting support block.

[0011] Preferably, a first motor is installed on the outer wall of the adjusting support block, and an adjusting worm gear is installed at the output end of the first motor, with the adjusting worm gear extending to the outside of the adjusting support block.

[0012] Preferably, an adjusting threaded sleeve is fitted on the surface of the adjusting threaded rod on one side of the adjusting worm, and an adjusting worm wheel is fitted on the surface of the adjusting threaded sleeve. The adjusting worm wheel meshes with the adjusting worm and is movably connected to the adjusting support block.

[0013] Preferably, an adjusting fixing pin is installed on the outer wall of the adjusting threaded rod near the connecting frame, and the adjusting fixing pin extends to the outside of the adjusting threaded rod and is connected to the connecting frame. A first adjusting shaft is installed on the outer wall of the connecting frame, and the first adjusting shaft extends to the outside of the connecting frame and is movably connected to the tilting boom.

[0014] Preferably, a flipping connecting rod is installed at the bottom end of the U-shaped frame below the flipping forearm, and the flipping connecting rod extends to the outside of the U-shaped frame. A flipping fixing block is movably installed on the outer wall of the flipping connecting rod. A front locking pin is installed at the bottom end of the flipping fixing block, and the flipping fixing block is movably connected to the flipping connecting rod through the front locking pin.

[0015] Preferably, a second motor is installed on the outer wall of the flipping fixing block, a flipping threaded rod is movably installed inside the flipping fixing block, and the flipping threaded rod extends to the outside of the flipping fixing block. A flipping fixing pin is installed at one end of the flipping threaded rod near the flipping arm, and the flipping fixing pin extends to the outside of the flipping threaded rod and is connected to the flipping arm.

[0016] Preferably, the surface of the flip threaded rod is fitted with a flip threaded sleeve, the surface of the flip threaded sleeve is fitted with a flip worm wheel, and the flip worm wheel is movably connected to the flip fixed block. The output end of the second motor is equipped with a flip worm, and the flip worm meshes with the flip worm wheel.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the frame assembly not only realizes convenient circumferential rotation to clamp items and facilitates multi-angle adjustment of the clamping position of items, but also facilitates multi-level rotation adjustment to clamp items, increases the range of rotation adjustment when clamping items, and improves the convenience of the pallet truck frame assembly in clamping and transporting items.

[0018] Driven by the wheels, the trolley frame assembly is moved to the designated position. The servo motor drives the rotating shaft to rotate, which in turn drives the rotating table to rotate. The support slider provides sliding support for the rotating table. The rotating table drives the U-shaped frame, tilting arm, tilting arm, connecting frame, two-way cylinder, connecting plate, clamping arm, and push rod to rotate to the appropriate position. The two-way cylinder drives the clamping arm to move inward via the push rod, and the clamping arm clamps the items to be held, which facilitates the trolley's convenient gripping of items. This enables the trolley frame assembly to conveniently rotate and grip items, facilitating the trolley's quick gripping of items.

[0019] By flipping the boom and using the rear locking pin to move the adjusting support block, the first motor drives the adjusting worm to rotate, the adjusting worm to rotate the adjusting worm wheel, the adjusting worm wheel to rotate the adjusting threaded sleeve, the adjusting threaded sleeve to move the adjusting threaded rod, and the adjusting threaded rod drives the connecting frame to rotate around the first adjusting shaft by a certain angle via the adjusting fixing pin. This facilitates the handling vehicle to rotate and adjust the position of the items for clamping, enabling the handling vehicle frame assembly to clamp the items at multiple angles and improving the convenience of clamping items by the handling vehicle frame assembly.

[0020] The second motor drives the tilting worm gear to rotate, which in turn drives the tilting threaded sleeve to rotate. The tilting threaded sleeve then moves the tilting threaded rod, which in turn drives the tilting arm to rotate via the tilting fixing pin. The tilting arm then drives the connecting frame, the two-way cylinder, the connecting plate, and the clamping arm to rotate. The tilting arm then drives the tilting small arm to rotate around the tilting axis by a certain angle, facilitating further rotation and adjustment of the clamping arm's position. This achieves multi-stage rotation adjustment of the pallet truck frame assembly for clamping items, increasing the range of rotation adjustment when clamping items and improving the convenience of the pallet truck frame assembly for clamping and transporting items. Attached Figure Description

[0021] Figure 1 This is a front view structural diagram of the present utility model;

[0022] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the second motor of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the flip-threaded rod of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the adjustment support block of this utility model;

[0026] Figure 6 This is a three-dimensional structural diagram of the adjusting threaded sleeve of this utility model;

[0027] Figure 7 This is a three-dimensional structural diagram of the flip-threaded sleeve of this utility model;

[0028] Figure 8 This is a three-dimensional structural diagram of the adjusting worm gear of this utility model;

[0029] Figure 9 This is a three-dimensional structural diagram of the tilting worm gear of this utility model.

[0030] In the diagram: 1. Transport vehicle frame; 2. Traveling wheels; 3. Rotary table; 4. U-shaped frame; 5. Tilting boom; 6. Connecting frame; 7. Clamping arm; 8. Connecting plate; 9. Two-way cylinder; 10. Adjusting threaded rod; 11. Rear locking pin; 12. Adjusting support block; 13. First motor; 14. Adjusting threaded sleeve; 15. Adjusting worm gear; 16. Adjusting worm wheel; 17. Adjusting fixing pin; 18. First adjusting shaft; 19. Tilting connecting rod; 20. Tilting fixing block; 21. Tilting threaded rod; 22. Second motor; 23. Tilting fixing pin; 24. Tilting threaded sleeve; 25. Tilting worm wheel; 26. Tilting worm gear; 27. Tilting forearm; 28. Tilting shaft; 29. ​​Servo motor; 30. Rotating shaft; 31. Support slider; 32. Push rod; 33. Front locking pin. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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.

[0033] 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 indicated technical features. 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, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] Example 1

[0035] Please see Figure 1-9This utility model provides an embodiment of a transport vehicle frame assembly, including a transport vehicle frame 1 and wheels 2. Four sets of equally spaced wheels 2 are installed at the bottom of the transport vehicle frame 1. A support slider 31 is installed at the top of the transport vehicle frame 1. A servo motor 29 is installed inside the transport vehicle frame 1. A rotating shaft 30 is installed at the output end of the servo motor 29 and extends to the outside of the transport vehicle frame 1. A rotating platform 3 is installed at the top of the rotating shaft 30 and is movably connected to the support slider 31. A U-shaped frame 4 is installed at the top of the rotating platform 3, and a... A tilting arm 27 is mounted on the outer wall of the tilting arm 27. A tilting shaft 28 is movably mounted on the outer wall of the U-shaped frame 4 and extends to the outside of the U-shaped frame 4. The tilting shaft 28 is connected to the tilting arm 27. A connecting frame 6 is mounted on the outer wall of the tilting arm 5 away from the tilting arm 27. A connecting plate 8 is mounted on the outer wall of the connecting frame 6. Clamping arms 7 are symmetrically arranged on the outer wall of the connecting plate 8. A two-way cylinder 9 is mounted on the top of the connecting plate 8. A push rod 32 is mounted on the output end of each two-way cylinder 9 and each push rod 32 is connected to the clamping arm 7 at the adjacent end.

[0036] Driven by the walking wheels 2, the frame assembly of the transport vehicle is moved to the designated position. The servo motor 29 is turned on. With the support of the transport vehicle frame 1, the servo motor 29 drives the rotating shaft 30 to rotate. The rotating shaft 30 drives the rotating table 3 to rotate. The support slider 31 provides sliding support for the rotating table 3. The rotating table 3 drives the U-shaped frame 4, the flipping small arm 27, the flipping large arm 5, the connecting frame 6, the two-way cylinder 9, the connecting plate 8, the clamping arm 7, and the push rod 32 to rotate to the appropriate position. The two-way cylinder 9 is turned on. With the support of the connecting plate 8, the two-way cylinder 9 drives the clamping arm 7 to move inward through the push rod 32. The clamping arm 7 clamps the items that need to be clamped, which facilitates the transport vehicle to easily clamp the items. It realizes the convenient circular rotation of the transport vehicle frame assembly to clamp the items, which facilitates the transport vehicle frame assembly to quickly clamp the items.

[0037] A rear retaining pin 11 is installed on the outer wall of the tilting boom 5. An adjusting support block 12 is movably fitted onto the surface of the rear retaining pin 11. An adjusting threaded rod 10 is movably installed inside the adjusting support block 12, and the adjusting threaded rod 10 extends to the outside of the adjusting support block 12. A first motor 13 is installed on the outer wall of the adjusting support block 12. An adjusting worm gear 15 is installed at the output end of the first motor 13, and the adjusting worm gear 15 extends to the outside of the adjusting support block 12. An adjusting threaded sleeve 14 is fitted onto the surface of the adjusting threaded rod 10 on one side of the adjusting worm gear 15. The surface of 4 is fitted with an adjusting worm gear 16, which meshes with the adjusting worm 15 and is movably connected to the adjusting support block 12. An adjusting fixing pin 17 is installed on the outer wall of the adjusting threaded rod 10 near the end of the connecting frame 6, and the adjusting fixing pin 17 extends to the outside of the adjusting threaded rod 10 and is connected to the connecting frame 6. A first adjusting shaft 18 is installed on the outer wall of the connecting frame 6, and the first adjusting shaft 18 extends to the outside of the connecting frame 6 and is movably connected to the tilting arm 5.

[0038] When the clamping of an item requires adjustment, the flip arm 5 moves to support the adjustment support block 12 via the rear locking pin 11, and the first motor 13 is turned on. Under the support of the adjustment support block 12, the first motor 13 drives the adjustment worm 15 to rotate. Under the meshing of the adjustment worm 15 and the adjustment worm wheel 16, the adjustment worm 15 drives the adjustment worm wheel 16 to rotate. The adjustment worm wheel 16 drives the adjustment threaded sleeve 14 to rotate. Under the threaded connection between the adjustment threaded sleeve 14 and the adjustment threaded rod 10, the adjustment threaded sleeve 14 drives the adjustment threaded rod 10 to move. The adjustment threaded rod 10 drives the connecting frame 6 to rotate around the first adjustment shaft 18 by a certain angle via the adjustment fixing pin 17. This facilitates the transport vehicle to rotate and adjust the position of the item for clamping, realizing the multi-angle adjustment of the position of the item by the transport vehicle frame assembly, and improving the convenience of the transport vehicle frame assembly for clamping the item.

[0039] A flipping connecting rod 19 is installed at the bottom end of the U-shaped frame 4 below the flipping arm 27, and the flipping connecting rod 19 extends to the outside of the U-shaped frame 4. A flipping fixing block 20 is movably installed on the outer wall of the flipping connecting rod 19. A front locking pin 33 is installed at the bottom end of the flipping fixing block 20, and the flipping fixing block 20 is movably connected to the flipping connecting rod 19 through the front locking pin 33. A second motor 22 is installed on the outer wall of the flipping fixing block 20, and a flipping threaded rod 21 is movably installed inside the flipping fixing block 20, and the flipping threaded rod 21 extends to the flipping fixing block 20. Outside of block 20, a flipping fixing pin 23 is installed at one end of the flipping threaded rod 21 near the flipping arm 5, and the flipping fixing pin 23 extends to the outside of the flipping threaded rod 21 and is connected to the flipping arm 5. A flipping threaded sleeve 24 is fitted on the surface of the flipping threaded rod 21, and a flipping worm wheel 25 is fitted on the surface of the flipping threaded sleeve 24. The flipping worm wheel 25 is movably connected to the flipping fixing block 20. A flipping worm 26 is installed at the output end of the second motor 22, and the flipping worm 26 meshes with the flipping worm wheel 25.

[0040] When the second motor 22 is turned on, the flipping connecting rod 19 is movably supported by the flipping fixing block 20 via the front locking pin 33. The second motor 22 drives the flipping worm 26 to rotate. Under the meshing of the flipping worm 26 and the flipping worm wheel 25, the flipping worm wheel 25 drives the flipping threaded sleeve 24 to rotate. Under the threaded connection between the flipping threaded sleeve 24 and the flipping threaded rod 21, the flipping threaded sleeve 24 drives the flipping threaded rod 21 to move. The flipping threaded rod 21 drives the flipping arm 5 to rotate via the flipping fixing pin 23. The flipping arm 5 drives the connecting frame 6, the two-way cylinder 9, the connecting plate 8, and the clamping arm 7 to rotate. The flipping arm 5 drives the flipping small arm 27 to rotate a certain angle around the flipping shaft 28, so as to facilitate the rotation adjustment of the clamping arm 7 again. This realizes the multi-stage rotation adjustment of the pallet truck frame assembly to clamp items, increases the range of rotation adjustment when clamping items, and improves the convenience of the pallet truck frame assembly for clamping and transporting items.

[0041] Work steps

[0042] In this embodiment, the following steps are taken: First, the vehicle frame assembly is moved to a designated position by the drive of the walking wheels 2. The servo motor 29 drives the rotating shaft 30 to rotate, which in turn drives the rotating table 3 to rotate. The support slider 31 provides sliding support for the rotating table 3. The rotating table 3 drives the U-shaped frame 4, the tilting arm 27, the tilting arm 5, the connecting frame 6, the two-way cylinder 9, the connecting plate 8, the clamping arm 7, and the push rod 32 to rotate to a suitable position. The two-way cylinder 9 drives the clamping arm 7 to move inward via the push rod 32, thus clamping the item to be held. The tilting arm 5 is supported by the rear locking pin 11 on the adjusting support block 12. The first motor 13 drives the adjusting worm gear 15 to rotate, which in turn drives the adjusting worm wheel 16 to rotate. The worm gear 16 drives the adjusting threaded sleeve 14 to rotate, the adjusting threaded sleeve 14 drives the adjusting threaded rod 10 to move, and the adjusting threaded rod 10 drives the connecting frame 6 to rotate a certain angle around the first adjusting shaft 18 via the adjusting fixing pin 17. The second motor 22 drives the flipping worm 26 to rotate, the flipping worm gear 25 drives the flipping threaded sleeve 24 to rotate, the flipping threaded sleeve 24 drives the flipping threaded rod 21 to move, and the flipping threaded rod 21 drives the flipping arm 5 to rotate via the flipping fixing pin 23. The flipping arm 5 drives the connecting frame 6, the two-way cylinder 9, the connecting plate 8, and the clamping arm 7 to rotate, and the flipping arm 5 drives the flipping small arm 27 to rotate a certain angle around the flipping shaft 28 to facilitate the rotation and adjustment of the clamping arm 7 to complete the use of the frame assembly.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A truck frame assembly, characterized by: The utility model provides a kind of transport vehicle frame (1) and walking wheel (2), the bottom end of the transport vehicle frame (1) is equipped with four groups of walking wheel (2) of equal interval, the top of the transport vehicle frame (1) is equipped with support slider (31), the inside of the transport vehicle frame (1) is equipped with servo motor (29), the output of the servo motor (29) is equipped with rotating shaft (30), and rotating shaft (30) extends to the outside of transport vehicle frame (1), the top of the rotating shaft (30) is equipped with rotary table (3), and rotary table (3) is movably connected with support slider (31), the top of the rotary table (3) is equipped with U-shaped frame (4), the top of the U-shaped frame (4) is equipped with turnover small arm (27), turnover large arm (5) is installed on the outer wall of turnover small arm (27), turnover shaft (28) is movably installed on the outer wall of the U-shaped frame (4), and turnover shaft (28) extends to the outside of U-shaped frame (4), and turnover shaft (28) is connected with turnover small arm (27), connecting frame (6) is installed on the outer wall of the side of turnover large arm (5) away from turnover small arm (27), and connecting plate (8) is installed on the outer wall of the connecting frame (6).

2. A truck frame assembly according to claim 1, wherein: The outer wall of the connecting plate (8) is symmetrically provided with clamping arms (7), and the top of the connecting plate (8) is provided with a bidirectional cylinder (9).

3. A truck frame assembly according to claim 2, wherein: The output ends of the bidirectional cylinder (9) are both provided with push rods (32), and the push rods (32) are both connected with the clamping arms (7) at the adjacent ends.

4. A truck frame assembly according to claim 3, wherein: A rear pin (11) is installed on the outer wall of the turnover large arm (5), an adjusting support block (12) is movably sleeved on the surface of the rear pin (11), and an adjusting threaded rod (10) is movably installed in the adjusting support block (12) and extends to the outside of the adjusting support block (12).

5. A truck frame assembly according to claim 4, wherein: A first motor (13) is installed on the outer wall of the adjusting support block (12), an adjusting worm (15) is installed at the output end of the first motor (13) and extends to the outside of the adjusting support block (12).

6. A truck frame assembly according to claim 5 wherein: An adjusting threaded sleeve (14) is sleeved on the surface of the adjusting threaded rod (10) on one side of the adjusting worm (15), an adjusting worm wheel (16) is sleeved on the surface of the adjusting threaded sleeve (14), and the adjusting worm wheel (16) is engaged with the adjusting worm (15) and movably connected with the adjusting support block (12).

7. A truck frame assembly according to claim 6 wherein: An adjusting fixed pin (17) is installed on the outer wall of the adjusting threaded rod (10) close to one end of the connecting frame (6), the adjusting fixed pin (17) extends to the outside of the adjusting threaded rod (10) and is connected with the connecting frame (6), a first adjusting shaft (18) is installed on the outer wall of the connecting frame (6) and extends to the outside of the connecting frame (6), and the first adjusting shaft (18) is movably connected with the turnover large arm (5).

8. A truck frame assembly according to claim 7, wherein: The bottom end of the U-shaped frame (4) below the turnover arm (27) is provided with a turnover connecting rod (19), and the turnover connecting rod (19) extends to the outside of the U-shaped frame (4), the outer wall of the turnover connecting rod (19) is movably provided with a turnover fixing block (20), the bottom end of the turnover fixing block (20) is provided with a front pin (33), and the turnover fixing block (20) is movably connected with the turnover connecting rod (19) through the front pin (33).

9. A truck frame assembly according to claim 8, wherein: The outer wall of the turnover fixing block (20) is provided with a second motor (22), the inside of the turnover fixing block (20) is movably provided with a turnover threaded rod (21), and the turnover threaded rod (21) extends to the outside of the turnover fixing block (20), one end of the turnover threaded rod (21) close to the turnover arm (5) is provided with a turnover fixing pin (23), the turnover fixing pin (23) extends to the outside of the turnover threaded rod (21), and the turnover fixing pin (23) is connected with the turnover arm (5).

10. A truck frame assembly according to claim 9, wherein: The surface of the turnover threaded rod (21) is provided with a turnover threaded sleeve (24), the surface of the turnover threaded sleeve (24) is provided with a turnover worm wheel (25), and the turnover worm wheel (25) is movably connected with the turnover fixing block (20), the output end of the second motor (22) is provided with a turnover worm (26), and the turnover worm (26) is engaged with the turnover worm wheel (25).

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