Rear bracket of a tow truck

Abstract

The utility model discloses a rear bracket of a tow truck, belonging to the technical field of tow truck brackets. The rear bracket of the tow truck comprises a load-bearing vehicle plate, the outer surface of the load-bearing vehicle plate is hinged with a hydraulic telescopic rod, the telescopic end of the hydraulic telescopic rod is hinged with a load-bearing block, the top of the load-bearing block is welded with a main bracket, the inner surface of the main bracket is slidably connected with an expansion bracket, the outer surface of the expansion bracket is slidably connected with a secondary bracket, the outer surface of the secondary bracket is rotatably connected with an arc plate, and the outer surface of the arc plate is fixedly connected with an adjustment concave block. The rear bracket of the tow truck can adjust the working height and working angle of the main bracket, the expansion bracket and the secondary bracket by starting the hydraulic telescopic rod, so as to facilitate towing vehicles of different volumes, the working length of the main bracket and the expansion bracket can be adjusted by starting the first electric telescopic rod, and the working width of the expansion bracket and the secondary bracket can be adjusted by further starting the second electric telescopic rod, so as to facilitate meeting the towing requirements of vehicles of different widths.

Description

Technical Field

[0001] The utility model belongs to the technical field of brackets for tow trucks, and in particular relates to a rear bracket for a tow truck. Background Art

[0002] Road wreckers, also known as trailers, road rescue vehicles, and towing vehicles, have multiple functions such as lifting, pulling, and lifting and traction. Wreckers are mainly used for road fault vehicles, urban illegal vehicles, and emergency rescue, etc.; they are suitable for towing operations on highways and urban roads. Road wreckers can be divided into: one-to-two wreckers, one-to-one wreckers, multi-functional wreckers, flatbed wreckers, and full-ground wreckers. A rear bracket is generally installed at the rear end of the wrecker to tow the faulty vehicle through the bracket;

[0003] The rear bracket of a road tow truck generally has the function of adjusting the telescopic length and width to meet the towing needs of different models as much as possible. However, the size and width of the wheels used by different vehicles may be different. Some wheels are larger in size, so the operator needs to temporarily replace some parts of the rear bracket to meet the towing needs.

[0004] In order to solve the above problems, the present application proposes a rear bracket of a tow truck. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a rear bracket of a tow truck to overcome the above technical problems existing in the existing related technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A rear bracket of a tow truck comprises a load-bearing vehicle plate, the outer surface of the load-bearing vehicle plate is hinged with a hydraulic telescopic rod, the telescopic end of the hydraulic telescopic rod is hinged with a load-bearing block, a main bracket is welded on the top of the load-bearing block, the inner surface of the main bracket is slidably connected with an expansion bracket, the outer surface of the expansion bracket is slidably connected with a secondary bracket, the outer surface of the secondary bracket is rotatably connected with an arc plate, the outer surface of the arc plate is fixedly connected with an adjustment concave block, the inner surface of the adjustment concave block is slidably connected with an adjustment baffle, a positioning hole is opened on the top of the adjustment baffle, a first limiting structure for limiting the sliding distance of the adjustment baffle is arranged on the adjustment concave block, and a second limiting structure for limiting the rotation angle of the arc plate is arranged on the arc plate;

[0008] The first limiting structure comprises a limiting block, the limiting block is fixedly connected to a side of the adjusting concave block away from the arc plate, the top of the limiting block is fixedly connected to a limiting telescopic rod, the outer surface of the limiting telescopic rod is wound with a limiting spring, the telescopic end of the limiting telescopic rod is welded with a top plate, the bottom of the top plate is fixedly connected to a limiting plug rod, and the limiting plug rod passes through a positioning hole and is movably connected to the adjusting baffle;

[0009] The second limiting structure includes a first bolt, which is threadedly connected to the inner cavity of the arc plate. The first bolt passes through the arc plate and is threadedly connected to the auxiliary bracket. The outer surface of the first bolt is threadedly connected to a first nut, and the bottom of the first nut overlaps the top of the arc plate.

[0010] The outer surface of the auxiliary bracket is fixedly connected to a guide plate, and the outer surface of the guide plate is installed with a cleaning brush. By setting the guide plate and the cleaning brush, the guide plate can guide the movement of the wheel and cooperate with the adjusting baffle to limit the position of the wheel. At the same time, the cleaning brush on the surface of the guide plate can eliminate dust and impurities on the surface of the wheel as much as possible, and try to avoid the wheel from accidentally loosening due to interference from impurities during dragging.

[0011] A storage block is fixedly connected to one side of the sub-bracket away from the guide plate, a servo motor is installed on the outer surface of the storage block, a storage rod is welded to the output end of the servo motor, and a binding rope is wrapped around the outer surface of the storage rod. By arranging the storage block, the servo motor, the storage rod and the binding rope, the servo motor can be started to gradually release the binding rope through the storage rod, and the operator can fix the wheel by wrapping the binding rope. After the wheel is wrapped, the servo motor can be started again to drive the storage rod to rotate in the opposite direction to gradually tighten the binding rope, so as to avoid the wheel from accidentally loosening and causing damage during the vehicle towing process.

[0012] The outer surface of the main bracket is slidably connected to the first connecting block, the outer surface of the first connecting block is hinged with a support rod, the outer surface of the auxiliary bracket is fixedly connected to the second connecting block, and the outer surface of the second connecting block is hinged to an end of the support rod away from the first connecting block. By setting the first connecting block, the support rod and the second connecting block, the movement of the extension bracket and the auxiliary bracket can drive the first connecting block to slide along the surface of the main bracket. At the same time, the movement of the extension bracket and the auxiliary bracket can adjust the angle between the support rod and the main bracket, and the support rod can provide additional supporting force for the extension bracket and the auxiliary bracket, so as to avoid damage caused by uneven force when the extension bracket and the auxiliary bracket are extended outward.

[0013] A protective box is hinged on the top of the main bracket, and a handle is fixedly connected to the outer surface of the protective box. By arranging the protective box and the handle, the operator can control the protective box to flip up and down by holding the handle, and when the protective box is forced to droop to both sides of the main bracket, it can cover and protect the support rod, thereby minimizing accidental bumps and damage to the support rod when it is not working.

[0014] A first electric telescopic rod is installed on the inner surface of the main bracket, and the telescopic end of the first electric telescopic rod is fixedly connected to the outer surface of the extension bracket. A second electric telescopic rod is installed on the outer surface of the extension bracket, and the telescopic end of the second electric telescopic rod is fixedly connected to the inner surface of the auxiliary bracket. By arranging the first electric telescopic rod and the second electric telescopic rod, the telescopic movement of the first electric telescopic rod can extend the overall length of the main bracket and the extension bracket, and the telescopic movement of the second electric telescopic rod can extend the overall width of the extension bracket and the auxiliary bracket, which is convenient for quickly towing vehicles of different widths.

[0015] The outer surface of the adjusting baffle is overlapped with an anti-skid plate, the outer surface of the adjusting baffle is provided with a storage groove, and the inner surface of the adjusting baffle is fixedly connected with a magnet block. By arranging the anti-skid plate, the storage groove and the magnet block, the anti-skid plate is installed on the surface of the adjusting baffle to increase the friction between the tire and the adjusting baffle, thereby preventing the tire from accidentally loosening during the towing process of the car.

[0016] A positioning rod is installed on the side of the anti-skid plate close to the adjusting baffle, and the outer surface of the positioning rod is in contact with the inner surface of the magnet block. By setting the positioning rod, since the positioning rod is made of metal, after the positioning rod is inserted into the magnet block, the anti-skid plate remains relatively fixed with the adjusting baffle under the joint action of the magnet block and the positioning rod, which facilitates the rapid removal and replacement of the anti-skid plate.

[0017] The inner cavity of the adjusting baffle is rotatably connected to an adjusting rod, the outer surface of the adjusting rod is fixedly connected to an expansion plate, the outer surface of the adjusting rod is threadedly connected to a second nut, the bottom of the second nut overlaps with the top of the adjusting baffle, and by setting the adjusting rod, the expansion plate and the second nut, rotating the adjusting rod can drive the expansion plate to flip, and the flipping of the expansion plate can increase the contact area between the adjusting baffle and the automobile tire, so as to meet the fixing requirements of tires of different sizes. At the same time, after the second nut is forced to move downward and is in tight contact with the adjusting baffle, the rotation of the adjusting rod is restricted, so as to avoid accidental rotation of the adjusting rod to cause the expansion plate to loosen.

[0018] A round handle is fixedly connected to the top of the adjusting rod, and a plurality of anti-skid bumps are installed on the outer surface of the round handle. By providing the round handle and the anti-skid bumps, the operator can control the rotation of the adjusting rod by holding the round handle, and the anti-skid bumps can increase the friction force on the surface of the round handle, making it easier for the operator to control the rotation of the adjusting rod more stably and with less effort.

[0019] In summary, the technical effects and advantages of the utility model are as follows:

[0020] The rear bracket of the tow truck can adjust the working height and working angle of the main bracket, the expansion bracket and the auxiliary bracket by starting the hydraulic telescopic rod, so as to facilitate towing vehicles of different sizes; the working length of the main bracket and the expansion bracket can be adjusted by starting the first electric telescopic rod; the working width of the expansion bracket and the auxiliary bracket can be adjusted by further starting the second electric telescopic rod, so as to facilitate towing requirements of vehicles of different widths; at the same time, the adjusting concave block can be adjusted in angle according to the different widths of the vehicle through the arc plate, and the angle of the adjusting concave block can be limited by the first bolt and the first nut; the wheel can be pressed against the surface of the guide plate by sliding the adjusting baffle, and the position can be limited by the limiting rod passing through the adjusting concave block and inserting into the adjusting baffle, so as to facilitate fast fixing of automobile wheels of different lengths and widths according to actual conditions, and to expand and improve the application scope of the rear bracket as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0022] Figure 2 It is a three-dimensional schematic diagram of the first limiting structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the utility model from another angle;

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the storage concave block, servo motor, storage rod and binding rope of the utility model;

[0025] Figure 5 This is an exploded schematic diagram of the main bracket, expansion bracket, auxiliary bracket and other related parts of the utility model.

[0026] Figure 6 It is a cross-sectional schematic diagram of the adjusting baffle, anti-skid plate and related parts of the utility model.

[0027] Figure 7 For this utility model Figure 1 A magnified schematic diagram of area A in the middle.

[0028] In the figure:

[0029] 1. Load-bearing vehicle plate; 2. Hydraulic telescopic rod; 3. Load-bearing block; 4. Main bracket; 5. Extension bracket; 6. Auxiliary bracket; 7. Arc plate; 8. Adjustment concave block; 9. Adjustment baffle; 10. Positioning hole;

[0030] 11. First limiting structure; 1101. Limiting block; 1102. Limiting telescopic rod; 1103. Limiting spring; 1104. Top plate; 1105. Limiting plug rod;

[0031] 12. second limiting structure; 1201. first bolt; 1202. first nut;

[0032] 13. Guide plate; 14. Cleaning brush; 15. Storage concave block; 16. Servo motor; 17. Storage rod; 18. Binding rope; 19. First connecting block; 20. Support rod; 21. Second connecting block; 22. Protective box; 23. Handle; 24. First electric telescopic rod; 25. Second electric telescopic rod; 26. Anti-skid plate; 27. Storage slot; 28. Magnet block; 29. ​​Positioning rod; 30. Adjustment rod; 31. Expansion board; 32. Second nut; 33. Round handle; 34. Anti-skid protrusion. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0034] Reference Figure 1 A rear bracket of a tow truck comprises a load-bearing plate 1, which is usually installed on the main beam or sub-beam at the bottom of the tow truck. A hydraulic telescopic rod 2 is hinged on the outer surface of the load-bearing plate 1, and a load-bearing block 3 is hinged on the telescopic end of the hydraulic telescopic rod 2. A main bracket 4 is welded on the top of the load-bearing block 3. The telescopic movement of the load-bearing block 3 can adjust the working height and working angle of the main bracket 4.

[0035] Reference Figure 1-3 The inner surface of the main bracket 4 is slidably connected to the expansion bracket 5, and the outer surface of the expansion bracket 5 is slidably connected to the auxiliary bracket 6; the outer surface of the auxiliary bracket 6 is rotatably connected to the arc plate 7, the outer surface of the arc plate 7 is fixedly connected to the adjustment concave block 8, and the inner surface of the adjustment concave block 8 is slidably connected to the adjustment baffle 9. According to the width and actual volume of the automobile wheel, the operator can change the limiting angle of the adjustment concave block 8 and the adjustment baffle 9 by rotating the arc plate 7. A positioning hole 10 is opened on the top of the adjustment baffle 9, and the sliding of the adjustment baffle 9 can gradually press the automobile wheel against the surface of the auxiliary bracket 6 for restriction and fixation.

[0036] Reference Figure 1-2A first limiting structure 11 for limiting the sliding distance of the adjusting baffle 9 is arranged on the adjusting concave block 8, and the first limiting structure 11 includes a limiting block 1101, and the limiting block 1101 is fixedly connected to a side of the adjusting concave block 8 away from the arc plate 7, and the top of the limiting block 1101 is fixedly connected to a limiting telescopic rod 1102, and the limiting telescopic rod 1102 is installed at the center of the top of the limiting block 1101; a limiting spring 1103 is wound around the outer surface of the limiting telescopic rod 1102, and a top plate 1104 is welded to the telescopic end of the limiting telescopic rod 1102, and the operator can control the telescopic movement of the limiting telescopic rod 1102 and the limiting spring 1103 by moving the top plate 1104; the bottom of the top plate 1104 is fixedly connected to The limiting plug rod 1105 is movably inserted in the top of the adjusting recessed block 8, and the limiting plug rod 1105 passes through the positioning hole 10 and is movably connected with the adjusting baffle 9; moving the top plate 1104 upward can drive the limiting plug rod 1105 to gradually separate from the adjusting recessed block 8 and the adjusting baffle 9. When the limiting plug rod 1105 is completely separated from the adjusting recessed block 8, the operator can slide the adjusting baffle 9 according to the actual volume of the wheel. When the positioning holes 10 at other positions on the surface of the adjusting baffle 9 are aligned with the limiting plug rod 1105, the operator quickly releases the top plate 1104, and the top plate 1104 is quickly reset under the action of the limiting telescopic rod 1102 and the limiting spring 1103 and fixes the adjusting baffle 9 and the adjusting recessed block 8 again.

[0037] Reference Figure 1-3 A second limiting structure 12 for limiting the rotation angle of the arc plate 7 is provided on the arc plate 7, and the second limiting structure 12 includes a first bolt 1201, and the first bolt 1201 is threadedly connected to the inner cavity of the arc plate 7, and the first bolt 1201 passes through the arc plate 7 and is threadedly connected to the auxiliary bracket 6, and the outer surface of the first bolt 1201 is threadedly connected with a first nut 1202, and the bottom of the first nut 1202 overlaps the top of the arc plate 7; when the clamping angle of the arc plate 7 is confirmed, the operator can rotate the first nut 1202 downward to the top of the arc plate 7 to fix the arc plate 7 and adjust the concave block 8 as a whole.

[0038] Reference Figure 1 A guide plate 13 is fixedly connected to the outer surface of the auxiliary bracket 6, and a cleaning brush 14 is installed on the outer surface of the guide plate 13. The downwardly inclined guide plate 13 can assist the automobile wheel to move to the surface of the auxiliary bracket 6, and the cleaning brush 14 on the surface of the guide plate 13 can eliminate dust and impurities on the wheel surface as much as possible when the wheel moves, so as to avoid accidental loosening of the wheel due to interference from impurities.

[0039] Reference Figure 3-4A storage recess 15 is fixedly connected to the side of the auxiliary bracket 6 away from the guide plate 13, and a servo motor 16 is installed on the outer surface of the storage recess 15, and the servo motor 16 adopts an external power supply; a storage rod 17 is welded to the output end of the servo motor 16, and the storage rod 17 is rotatably connected to the inner surface of the storage recess 15, and a binding rope 18 is wound around the outer surface of the storage rod 17; after the servo motor 16 is started, the storage rod 17 can be driven to rotate, and the rotation of the storage rod 17 can reel in or release the binding rope 18 on the surface, and the binding rope 18 can be used to wrap around and fix the wheel of the towing car after the force is released. When the binding rope 18 is wound, the servo motor 16 is started again to drive the storage rod 17 to rotate in the opposite direction to gradually tighten the binding rope 18, so as to avoid accidental loosening of the wheel during the movement of the expansion bracket 5.

[0040] Reference Figure 3 The outer surface of the main bracket 4 is slidably connected to the first connecting block 19, the outer surface of the first connecting block 19 is hinged with a support rod 20, the outer surface of the auxiliary bracket 6 is fixedly connected to the second connecting block 21, and the outer surface of the second connecting block 21 is hinged to the end of the support rod 20 away from the first connecting block 19; the movement of the extension bracket 5 and the auxiliary bracket 6 can drive the first connecting block 19 to slide along the surface of the main bracket 4, and at the same time, the movement of the extension bracket 5 and the auxiliary bracket 6 can adjust the angle between the support rod 20 and the main bracket 4, and the support rod 20 can provide additional supporting force for the extension bracket 5 and the auxiliary bracket 6, so as to avoid damage caused by excessive force when the extension bracket 5 and the auxiliary bracket 6 are extended outward.

[0041] Reference Figure 3 A protective box 22 is hinged on the top of the main bracket 4, and a handle 23 is fixedly connected to the outer surface of the protective box 22; there are two protective boxes 22, and the two protective boxes 22 are symmetrically distributed with the main bracket 4 as the center; when the auxiliary bracket 6 is not stretched outward under force and the support rod 20 is close to the outer wall of the main bracket 4, the protective box 22 flips downward under its own gravity to protect the support rod 20, and try to avoid accidental bumps and damage to the support rod 20 when it is not working.

[0042] Reference Figure 1 , Figure 3 and Figure 5A first electric telescopic rod 24 is installed on the inner surface of the main bracket 4, and the telescopic end of the first electric telescopic rod 24 is fixedly connected to the outer surface of the expansion bracket 5. A second electric telescopic rod 25 is installed on the outer surface of the expansion bracket 5, and the telescopic end of the second electric telescopic rod 25 is fixedly connected to the inner surface of the sub-bracket 6; both the first electric telescopic rod 24 and the second electric telescopic rod 25 adopt an external power supply, and the main bracket 4 can drive the expansion bracket 5 to move forward and backward through the telescopic movement of the first electric telescopic rod 24 to change the total working length of the main bracket 4 and the expansion bracket 5; the expansion bracket 5 can drive the sub-brackets 6 on both sides to move left and right through the telescopic movement of the second electric telescopic rod 25 to change the total working width of the expansion bracket 5 and the sub-bracket 6, so as to meet the towing and fixing requirements of vehicles of different sizes.

[0043] Reference Figure 3 and Figure 6 The outer surface of the adjusting baffle 9 is overlapped with an anti-skid plate 26, the vertical cross-sectional area of ​​the anti-skid plate 26 is smaller than the vertical cross-sectional area of ​​the adjusting baffle 9, and the anti-skid plate 26 can increase the friction between the adjusting baffle 9 and the wheel, and try to avoid accidental loosening of the wheel. The outer surface of the adjusting baffle 9 is provided with a storage slot 27, and the inner surface of the adjusting baffle 9 is fixedly connected with a magnet block 28, and the magnet block 28 is located in the storage slot 27. A positioning rod 29 is installed on the side of the anti-skid plate 26 close to the adjusting baffle 9, and the outer surface of the positioning rod 29 fits the inner surface of the magnet block 28. Because the positioning rod 29 is made of metal, after the positioning rod 29 and the magnet block 28 contact each other, there is a magnetic force of attraction between the positioning rod 29 and the magnet block 28; then the anti-skid plate 26 can be inserted into the magnet block 28 through the positioning rod 29 to keep it relatively fixed with the adjusting baffle 9, which is convenient for operators to quickly remove and replace the damaged anti-skid plate 26.

[0044] Reference Figure 1 and Figure 7 The inner cavity of the adjusting baffle 9 is rotatably connected to the adjusting rod 30, and the outer surface of the adjusting rod 30 is fixedly connected to the expansion plate 31. The operator rotates the adjusting rod 30 to drive the expansion plate 31 to rotate in the same direction; when the expansion plate 31 is rotated 90° by force and contacts the adjusting baffle 9 again, the contact area between the adjusting baffle 9 and the automobile tire is increased, which is convenient for meeting the fixing requirements of wheels of different widths.

[0045] Reference Figure 1 and Figure 7The outer surface of the adjusting rod 30 is threadedly connected with a second nut 32, and the bottom of the second nut 32 overlaps with the top of the adjusting baffle 9. When the rotation angle of the expansion plate 31 is confirmed, the adjusting rod 30 is kept stationary while the expansion plate 31 is rotated downward to the bottom of the adjusting baffle 9 to limit the rotation of the adjusting rod 30, and try to avoid the adjustment rod 30 from accidentally rotating and causing the expansion plate 31 to loosen. The top of the adjusting rod 30 is fixedly connected with a round handle 33, and the radius of the round handle 33 is larger than the radius of the adjusting rod 30; the outer surface of the round handle 33 is installed with a plurality of anti-skid bumps 34, which can increase the friction force on the surface of the round handle 33, so that the operator can control the rotation of the adjusting rod 30 more labor-savingly and stably.

[0046] Working principle: First, according to the wheel position of the towed vehicle, the operator can adjust the working height and working angle of the main bracket 4, the expansion bracket 5 and the auxiliary bracket 6 by starting the hydraulic telescopic rod 2. The operator can adjust the working length of the main bracket 4 and the expansion bracket 5 by starting the first electric telescopic rod 24 again, and further start the second electric telescopic rod 25 to adjust the working width of the expansion bracket 5 and the auxiliary bracket 6, so as to meet the towing needs of vehicles of different widths. At the same time, the adjusting concave block 8 can be adjusted in angle according to the different widths of the vehicle through the arc plate 7, and then the rotation of the arc plate 7 is limited by rotating the first nut 1202 downward and the clamping angle of the adjusting concave block 8 is further limited. The wheel can be pressed against the surface of the auxiliary bracket 6 by adjusting the sliding of the baffle plate 9, and the guide plate 13 on the surface of the auxiliary bracket 6 can guide the wheel to move and the impurities and dust on the surface of the wheel can be cleaned as much as possible by the cleaning brush 14. Then, the limiting plug 1105 passes through the adjusting concave block 8 and is inserted into the adjusting baffle plate 9 for position restriction, so as to quickly fix the automobile wheels of different widths and volumes according to the actual situation, and expand and improve the application range of the rear bracket as much as possible.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rear bracket of a tow truck, comprising a load-bearing vehicle plate (1), characterized in that: The outer surface of the load-bearing vehicle plate (1) is hinged with a hydraulic telescopic rod (2), the telescopic end of the hydraulic telescopic rod (2) is hinged with a load-bearing block (3), the top of the load-bearing block (3) is welded with a main bracket (4), the inner surface of the main bracket (4) is slidably connected to an expansion bracket (5), the outer surface of the expansion bracket (5) is slidably connected to a sub-bracket (6), the outer surface of the sub-bracket (6) is rotatably connected to an arc plate (7), the outer surface of the arc plate (7) is fixedly connected to an adjustment recessed block (8), the inner surface of the adjustment recessed block (8) is slidably connected to an adjustment baffle (9), a positioning hole (10) is provided on the top of the adjustment baffle (9), a first limiting structure (11) for limiting the sliding distance of the adjustment baffle (9) is provided on the adjustment recessed block (8), and a second limiting structure (12) for limiting the rotation angle of the arc plate (7) is provided on the arc plate (7); The first limiting structure (11) comprises a limiting block (1101), wherein the limiting block (1101) is fixedly connected to a side of the adjusting concave block (8) away from the arc-shaped plate (7), the top of the limiting block (1101) is fixedly connected to a limiting telescopic rod (1102), the outer surface of the limiting telescopic rod (1102) is wound with a limiting spring (1103), the telescopic end of the limiting telescopic rod (1102) is welded with a top plate (1104), the bottom of the top plate (1104) is fixedly connected to a limiting plug rod (1105), and the limiting plug rod (1105) passes through the positioning hole (10) and is movably connected to the adjusting baffle (9); The second limiting structure (12) includes a first bolt (1201), which is threadedly connected to the inner cavity of the arc plate (7), and the first bolt (1201) passes through the arc plate (7) and is threadedly connected to the auxiliary bracket (6). The outer surface of the first bolt (1201) is threadedly connected to a first nut (1202), and the bottom of the first nut (1202) overlaps with the top of the arc plate (7).

2. The rear bracket of a tow truck according to claim 1, characterized in that: The outer surface of the auxiliary bracket (6) is fixedly connected to a guide plate (13), and the outer surface of the guide plate (13) is installed with a cleaning brush (14).

3. The rear bracket of a tow truck according to claim 1, characterized in that: A receiving recessed block (15) is fixedly connected to one side of the auxiliary bracket (6) away from the guide plate (13); a servo motor (16) is mounted on the outer surface of the receiving recessed block (15); a receiving rod (17) is welded to the output end of the servo motor (16); and a binding rope (18) is wound around the outer surface of the receiving rod (17).

4. The rear bracket of a tow truck according to claim 1, characterized in that: The outer surface of the main bracket (4) is slidably connected to a first connecting block (19), the outer surface of the first connecting block (19) is hinged to a support rod (20), the outer surface of the auxiliary bracket (6) is fixedly connected to a second connecting block (21), and the outer surface of the second connecting block (21) is hinged to an end of the support rod (20) away from the first connecting block (19).

5. The rear bracket of a tow truck according to claim 1, characterized in that: A protection box (22) is hingedly connected to the top of the main bracket (4), and a handle (23) is fixedly connected to the outer surface of the protection box (22).

6. The rear bracket of a tow truck according to claim 1, characterized in that: A first electric telescopic rod (24) is mounted on the inner surface of the main bracket (4), the telescopic end of the first electric telescopic rod (24) is fixedly connected to the outer surface of the expansion bracket (5), a second electric telescopic rod (25) is mounted on the outer surface of the expansion bracket (5), the telescopic end of the second electric telescopic rod (25) is fixedly connected to the inner surface of the auxiliary bracket (6).

7. The rear bracket of a tow truck according to claim 1, characterized in that: The outer surface of the adjusting baffle (9) is overlapped with an anti-slip plate (26), the outer surface of the adjusting baffle (9) is provided with a storage groove (27), and the inner surface of the adjusting baffle (9) is fixedly connected with a magnet block (28).

8. The rear bracket of a tow truck according to claim 7, characterized in that: A positioning rod (29) is installed on one side of the anti-slide plate (26) close to the adjustment baffle (9), and the outer surface of the positioning rod (29) is in contact with the inner surface of the magnet block (28).

9. The rear bracket of a tow truck according to claim 1, characterized in that: The inner cavity of the adjusting baffle (9) is rotatably connected to an adjusting rod (30), the outer surface of the adjusting rod (30) is fixedly connected to an expansion plate (31), the outer surface of the adjusting rod (30) is threadedly connected to a second nut (32), and the bottom of the second nut (32) overlaps the top of the adjusting baffle (9).

10. The rear bracket of a tow truck according to claim 9, characterized in that: A round handle (33) is fixedly connected to the top of the adjusting rod (30), and a plurality of anti-slip bumps (34) are installed on the outer surface of the round handle (33).

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