Trailer traction reinforcing structure

Abstract

The utility model discloses a trailer traction reinforcing structure which comprises a base, a first positioning block and a second positioning block are fixedly arranged on the base, and a traction pin is movably connected between the first positioning block and the second positioning block in an inserted mode. A trailer traction structure has the problems that a traction pin is easy to fall off and the installation is not firm, which may cause the failure of traction connection in the driving process and bring potential safety hazards. The lower end of the traction pin is fixed to the second positioning block in a threaded connection mode, rotation of the traction pin is limited through the limiting mechanism, and the traction pin is effectively prevented from falling off in the traveling process of the trailer. Meanwhile, the stability of the traction pin is further enhanced through the arrangement of the stop lever mechanism, and the traction pin is prevented from moving upwards. In addition, the use of the plastic buckle not only facilitates the limiting operation of the limiting block, but also improves the reliability and safety of the whole structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to trailer traction technical field, concretely is a trailer traction reinforcing structure. BACKGROUND

[0002] When the trailer is towing other types of vehicles such as a trailer truck, the towing ring in the towing rod of the towed vehicle needs to be connected with the towing seat on the trailer.

[0003] Through the search, the application number for 201811018395.2 Chinese invention patent discloses a kind of anti-falling towing seat, when trailer and towed vehicle need to be towed, need to install towing pin to realize self-locking.At this time, first pull out the latch, lock block is rotated to appropriate position to make that towing pin is inserted on the round hole of towing base, lock block is rotated to make that its upper end round hole is aligned with the round hole of lock block fixing piece after the upper end round hole, then with latch locking, therefore, lock block is locked on lock block fixing piece by latch, so that the upper end surface of towing pin is limited by the protrusion of lock block, prevent towing pin from falling off axially, and it cannot be turned over on bumpy road, so as to realize self-locking function, and cannot appear unhooking, fracture or jamming phenomenon.

[0004] For the prior art described above, lock block is positioned by latch, and latch is prone to loosen due to jolt when trailer travels, and even the problem of falling off can occur in serious cases, and towing pin is only installed with towing base by sliding insertion, so the installation is not firm, therefore, the utility model provides a trailer traction reinforcing structure to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at the deficiencies of prior art, and provides a trailer traction reinforcing structure to solve the problems in the background art.

[0006] The utility model provides the following technical scheme: a trailer traction reinforcing structure, first positioning block and second positioning block are fixedly arranged on base, towing pin is movably inserted between first positioning block and second positioning block, through hole is arranged in first positioning block, threaded hole is arranged in second positioning block, towing pin penetrates through the through hole, and the lower end of towing pin is provided with stud, and the stud is screw-connected with the threaded hole.

[0007] Limiting mechanism for limiting the rotation of towing pin is arranged below second positioning block of base, the lower end of stud is fixed with rectangular block, the limiting mechanism includes limiting block movably arranged below second positioning block, spring is connected between the lower end of limiting block and base, and the upper end of limiting block is provided with rectangular slot corresponding to rectangular block.

[0008] Preferably, the surface of the base is fixed with a guide seat, the limiting block is slidingly arranged in the guide seat, and the spring is connected between the lower end of the limiting block and the bottom of the guide seat.

[0009] Preferably, the stud is welded with the lower end of the traction pin.

[0010] Preferably, the guide seat is provided with a plastic buckle for limiting the downward movement of the limiting block.

[0011] The limiting block comprises a limiting portion, a blocking portion, a cylindrical portion and a sliding portion which are integrally formed from top to bottom, wherein the rectangular slot is arranged in the limiting portion, the sliding portion is slidingly arranged in the guide seat, and the spring is connected between the lower end of the sliding portion and the bottom of the guide seat.

[0012] The plastic buckle is in U-shaped structure, the plastic buckle is sleeved on the cylindrical portion from the side, and the upper and lower ends of the plastic buckle are in close contact with the blocking portion and the top of the guide seat, respectively.

[0013] Preferably, the upper end of the traction pin is integrally formed with a blocking block, the diameter of the blocking block is greater than the diameter of the through hole, and the upper end of the blocking block is fixed with a pull ring.

[0014] Preferably, the first positioning block is provided with a stop rod mechanism for limiting the upward movement of the traction pin.

[0015] Preferably, the stop rod mechanism comprises a fixed seat fixed with the first positioning block, the fixed seat is rotationally provided with a stop rod, the first positioning block is detachably fixed with the end of the stop rod away from the blocking block, and the stop rod is specifically provided as follows: when the end of the stop rod away from the blocking block is rotated upward, the end of the stop rod close to the blocking block moves above the blocking block, and when the end of the stop rod away from the blocking block is rotated downward, the end of the stop rod close to the blocking block moves away from above the blocking block.

[0016] Preferably, the end of the stop rod away from the blocking block is detachably connected with the first positioning block through a pin.

[0017] Compared with the prior art, the utility model has the advantages that in the prior art, the traction pin of the trailer traction structure is prone to falling off and is not firmly installed, which may cause the traction connection to fail during driving and bring safety hazards. The lower end of the traction pin is fixed with the second positioning block through screw connection in the utility model, and the rotation of the traction pin is limited through the limiting mechanism, thereby effectively preventing the traction pin from falling off during driving of the trailer. Meanwhile, the setting of the stop rod mechanism further enhances the stability of the traction pin and prevents it from moving upward. In addition, the use of the plastic buckle not only facilitates the limiting operation of the limiting block, but also improves the reliability and safety of the overall structure. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic diagram of the utility model.

[0019] Figure 2 It is a structure schematic diagram of the utility model when the draw pin is not installed.

[0020] Figure 3 It is a front view cross section structure schematic diagram of the utility model.

[0021] Figure 4 It is a three-dimensional structure schematic diagram of the utility model Figure 1 It is an enlarged structure schematic diagram of A place in the middle.

[0022] In the drawing: 1, base; 2, first positioning block; 3, second positioning block; 4, draw pin; 5, through hole; 6, threaded hole; 7, stud; 8, limiting mechanism; 81, limiting block; 810, limiting part; 811, stop block part; 812, cylindrical part; 813, sliding part; 82, spring; 83, rectangular groove; 84, guide seat; 9, rectangular block; 10, plastic buckle; 11, stop block; 12, pull ring; 13, stop lever mechanism; 131, fixed seat; 132, stop lever; 133, latch. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figures 1-4 The utility model discloses a trailer draw reinforcing structure, including base 1, the first positioning block 2 and the second positioning block 3 are fixedly arranged on base 1, the draw pin 4 is movably inserted between the first positioning block 2 and the second positioning block 3, when using, the draw pin 4 is inserted into the first positioning block 2 and the second positioning block 3, and the draw ring of the vehicle to be drawn is sleeved on the draw pin 4, so that connection can be realized, which is prior art, and will not be repeated here.

[0025] Please refer to Figure 1 With Figure 2The first positioning block 2 is provided with a through hole 5, the second positioning block 3 is provided with a threaded hole 6, the traction pin 4 penetrates through the through hole 5, and the lower end of the traction pin 4 is provided with a threaded stud 7 which is threadedly connected with the threaded hole 6. When the traction pin 4 is installed, the lower end of the traction pin 4 is first inserted downwardly in alignment with the through hole 5, and when the threaded stud 7 reaches the threaded hole 6 of the second positioning block 3, the traction pin 4 is rotated so that the threaded stud 7 is threadedly connected with the threaded hole 6. In this way, the traction pin 4 can be quickly positioned and axial movement of the traction pin 4 is limited.

[0026] Further, please refer to Figure 1 、 Figure 2 and Figure 3 The base 1 is provided below the second positioning block 3 with a limiting mechanism 8 for limiting rotation of the traction pin 4. The limiting mechanism 8 limits rotation of the traction pin 4 so that the threaded stud 7 cannot fall out of the threaded hole 6. Specifically, the lower end of the threaded stud 7 is fixed with a rectangular block 9, the limiting mechanism 8 includes a limiting block 81 which is movably arranged vertically below the second positioning block 3, a spring 82 which is connected between the lower end of the limiting block 81 and the base 1, and a rectangular groove 83 which is provided at the upper end of the limiting block 81 and corresponds to the rectangular block 9. When the traction pin 4 is inserted into the first positioning block 2 and the second positioning block 3, the limiting block 81 is first moved downwardly, and after the traction pin 4 is installed, the limiting block 81 is loosened and moved upwardly under the elastic force of the spring 82 so that the lower end of the rectangular block 9 is inserted into the rectangular groove 83. The limiting of the rectangular block 9 by the rectangular groove 83 limits rotation of the traction pin 4 and prevents the threaded stud 7 from falling out of the second positioning block 3.

[0027] In some embodiments, the surface of the base 1 is fixed with a guide seat 84, the limiting block 81 is slidably arranged in the guide seat 84, and the spring 82 is connected between the lower end of the limiting block 81 and the bottom of the guide seat 84. The guide seat 84 is used for guiding upward and downward movement of the limiting block 81, and the limiting block 81 cannot rotate in the guide seat 84.

[0028] In some embodiments, the threaded stud 7 is fixedly welded to the lower end of the traction pin 4.

[0029] Please refer to Figure 1 、 Figure 2 and Figure 3 In order to limit the limiting block 81 and prevent the limiting block 81 from moving downwardly due to bumping when the trailer moves, the guide seat 84 is provided with a plastic buckle 10 for limiting downward movement of the limiting block 81.

[0030] In some embodiments, as Figure 3As shown, the limiting block 81 comprises a limiting portion 810, a blocking portion 811, a cylindrical portion 812 and a sliding portion 813 which are integrally formed from top to bottom, the rectangular slot 83 is arranged in the limiting portion 810, the sliding portion 813 is slidingly arranged in the guide seat 84, the spring 82 is connected between the lower end of the sliding portion 813 and the bottom of the guide seat 84, the plastic buckle 10 is a U-shaped structure, the plastic buckle 10 is sleeved on the cylindrical portion 812 from the side, and the upper and lower ends of the plastic buckle 10 are in close contact with the blocking portion 811 and the top of the guide seat 84 respectively, after the rectangular block 9 at the lower end of the traction pin 4 is limited to the upper end of the rectangular slot 83 of the limiting block 81, the plastic buckle 10 is buckled into the cylindrical portion 812, which can limit the up-down movement of the limiting block 81, thereby preventing the rectangular block 9 from being separated from the rectangular slot 83.

[0031] As shown in the drawings, Figure 3 The upper end of the traction pin 4 is integrally formed with a blocking block 11, the diameter of the blocking block 11 is greater than the diameter of the through hole 5, and the upper end of the blocking block 11 is fixed with a pull ring 12, which is arranged to facilitate the rotation and upward lifting of the traction pin 4 when disassembling the traction pin 4.

[0032] Further, the first positioning block 2 is provided with a blocking rod mechanism 13 for limiting the upward movement of the traction pin 4.

[0033] In some embodiments, the blocking rod mechanism 13 comprises a fixed seat 131 fixed with the first positioning block 2, the fixed seat 131 is rotatably provided with a blocking rod 132, the first positioning block 2 is detachably fixed with the end of the blocking rod 132 away from the blocking block 11, and the blocking rod 132 is specifically arranged as follows: when the end of the blocking rod 132 away from the blocking block 11 is rotated upward, the end of the blocking rod 132 close to the blocking block 11 moves above the blocking block 11, and when the end of the blocking rod 132 away from the blocking block 11 is rotated downward, the end of the blocking rod 132 close to the blocking block 11 moves away from above the blocking block 11. Through the arrangement of the blocking rod mechanism 13, when installing the traction pin 4, the traction pin 4 is first inserted into the first positioning block 2 and the second positioning block 3, then the rectangular block 9 at the lower end of the traction pin 4 is limited by the limiting block 81, then the plastic buckle 10 is buckled into the side of the limiting block 81 to limit the limiting block 81, and finally the end of the blocking rod 132 is moved above the blocking block 11 by rotating the blocking rod 132, thereby limiting the upward movement of the traction pin 4.

[0034] In some embodiments, the end of the blocking rod 132 away from the blocking block 11 is detachably connected with the first positioning block 2 through a plug pin 133.

[0035] In summary, the utility model aims at realizing a trailer traction reinforcing structure, to solve the problem of easy falling and unfirm installation of the traction pin 4 in the prior art when the trailer is tractioned. The lower end of the traction pin 4 is fixed with the second positioning block 3 by adopting the mode of threaded connection, and the rotation of the traction pin 4 is limited by the limiting mechanism 8, effectively preventing the traction pin 4 from falling in the driving process of the trailer. At the same time, the setting of the blocking rod mechanism 13 further enhances the stability of the traction pin 4, preventing it from moving upward. In addition, the use of the plastic buckle 10 not only facilitates the limiting operation of the limiting block 81, but also improves the reliability and safety of the overall structure.

[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A trailer towing reinforcement structure, comprising a base (1), wherein a first positioning block (2) and a second positioning block (3) are fixedly disposed on the base (1), and a towing pin (4) is movably inserted between the first positioning block (2) and the second positioning block (3), characterized in that: The first positioning block (2) is provided with a through hole (5), the second positioning block (3) is provided with a threaded hole (6), the traction pin (4) is provided with the through hole (5), and the lower end of the traction pin (4) is provided with a stud (7), the stud (7) is threadedly connected to the threaded hole (6); The base (1) is provided with a limiting mechanism (8) for restricting the rotation of the traction pin (4) below the second positioning block (3). A rectangular block (9) is fixed at the lower end of the stud (7). The limiting mechanism (8) includes a limiting block (81) that is vertically and movably arranged below the second positioning block (3). A spring (82) is connected between the lower end of the limiting block (81) and the base (1). The upper end of the limiting block (81) is provided with a rectangular groove (83) corresponding to the rectangular block (9).

2. The trailer towing reinforcement structure according to claim 1, characterized in that: A guide seat (84) is fixed on the surface of the base (1), the limiting block (81) is slidably disposed in the guide seat (84), and the spring (82) is connected between the lower end of the limiting block (81) and the bottom of the guide seat (84).

3. The trailer towing reinforcement structure according to claim 1, characterized in that: The stud (7) is welded and fixed to the lower end of the traction pin (4).

4. The trailer towing reinforcement structure according to claim 2, characterized in that: The guide seat (84) is provided with a plastic buckle (10) for limiting the downward movement of the limiting block (81); The limiting block (81) includes a limiting part (810), a stop part (811), a cylindrical part (812), and a sliding part (813) integrally formed from top to bottom. The rectangular groove (83) is disposed in the limiting part (810), the sliding part (813) is slidably disposed in the guide seat (84), and the spring (82) is connected between the lower end of the sliding part (813) and the bottom of the guide seat (84). The plastic buckle (10) has a U-shaped structure. The plastic buckle (10) is sleeved on the cylindrical part (812) from the side, and the upper and lower ends of the plastic buckle (10) are in close contact with the top of the stop part (811) and the guide seat (84), respectively.

5. The trailer towing reinforcement structure according to claim 1, characterized in that: The upper end of the traction pin (4) is integrally formed with a stop block (11), the diameter of the stop block (11) is larger than the diameter of the through hole (5), and a pull ring (12) is fixed at the upper end of the stop block (11).

6. The trailer towing reinforcement structure according to claim 5, characterized in that: The first positioning block (2) is provided with a stop bar mechanism (13) for restricting the upward movement of the traction pin (4); The stop mechanism (13) includes a fixed seat (131) fixed to the first positioning block (2). The fixed seat (131) is rotatably provided with a stop rod (132). The first positioning block (2) and the end of the stop rod (132) away from the stop block (11) are detachably fixed. The stop rod (132) is specifically configured such that when the end of the stop rod (132) away from the stop block (11) rotates upward, the end of the stop rod (132) near the stop block (11) moves to the top of the stop block (11). When the end of the stop rod (132) away from the stop block (11) rotates downward, the end of the stop rod (132) near the stop block (11) moves away from the top of the stop block (11).

7. A trailer towing reinforcement structure according to claim 6, characterized in that: The end of the stop bar (132) away from the stop block (11) is detachably connected to the first positioning block (2) via a pin (133).

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