Anti-falling traction seat

Abstract

The utility model discloses a kind of anti-falling towing seats, it is related to vehicle towing connecting device technical field, including towing seat shell, towing seat shell bottom surface is equipped with lock hook assembly, lock hook assembly includes lock hook body, towing seat shell bottom surface slidingly inserts a pull rod, pull rod end portion is fixedly installed with wedge block body, wedge block body is slidingly installed in the front side of lock hook body, the inner wall of lock hook body is fixedly connected with towing connection component, towing seat shell bottom surface is fixedly installed with anti-falling component, the utility model is through the meshing transmission structure of lock hook body, outer gear, intermediate disc and drive assembly, connecting steel column is inserted in guiding groove during process, can drive drive assembly rotation to realize the synchronous action of bolt assembly and positioning assembly, make bolt body and ratchet block respectively complete perpendicular and radial direction's limit cooperation, to realize automatic anti-falling positioning in multidirection, effectively avoid that connecting steel column is loose or slipped under external force or vibration condition.

Description

Technical Field

[0001] This utility model relates to the technical field of vehicle traction connection devices, specifically an anti-detachment traction seat. Background Technology

[0002] In vehicle transportation and engineering traction, the towing seat, as a crucial component connecting the tractor and the towed device, plays a vital role in transmitting traction force and maintaining connection stability. Existing towing seats mostly employ mechanical hooks or pin connections for connection. However, due to conditions such as bumps, sudden braking, or lateral drift during vehicle operation, the connection points are highly susceptible to impact loads or vibration interference, leading to loosening of the hooks or dislocation of the connecting pins, causing unexpected separation of the traction structure and posing significant safety hazards. Especially in heavy-load or slope traction environments, the consequences of detachment are extremely serious. To address the aforementioned issues, existing technologies typically enhance connection strength by adding limit pins, thickening locking hooks, or employing double-layer protective structures. However, these improvements tend to focus on structural reinforcement while lacking dynamic anti-detachment design during the connection process, thus failing to achieve automatic limiting and multi-directional fixation. Although some traction seats have introduced spring reset or auxiliary slot mechanisms, the overall fitting accuracy is low, making it difficult to ensure that the locking components can accurately reset during the connection process. Problems such as incomplete locking and cumbersome operation still exist, failing to meet the safety requirements under complex working conditions. Utility Model Content

[0003] The purpose of this utility model is to provide an anti-fall-off traction seat to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An anti-detachment traction seat includes a traction seat housing, with support legs installed at both ends of the bottom surface of the traction seat housing. A locking hook assembly is installed on the bottom surface of the traction seat housing, the locking hook assembly including a locking hook body. A pull rod is slidably inserted into the bottom surface of the traction seat housing, and a wedge body is fixedly installed at the end of the pull rod. The wedge body is slidably installed on the front side of the locking hook body. A traction connection assembly is fixedly engaged with the inner wall of the locking hook body, and an anti-detachment component is fixedly installed on the bottom surface of the traction seat housing.

[0005] Furthermore, the locking hook body is rotatably connected to the bottom surface of the traction seat housing, and several internal gears are equidistantly arranged on the inner arc surface of the locking hook body, while a locking hook spring is fixedly connected to the outer wall of the locking hook body.

[0006] Furthermore, the traction connection assembly includes a connecting steel column, and an external gear is rotatably connected to the outer wall of the connecting steel column, the external gear meshing with an internal gear.

[0007] Furthermore, a rotating sleeve is welded and fixed to the bottom of the external gear, and an intermediate disk is coaxially fixed to the bottom surface of the rotating sleeve. Several arc-shaped grooves that run vertically through the top circumference are equidistantly opened on the top surface of the intermediate disk.

[0008] Furthermore, a drive assembly is coaxially fixed at the center of the bottom surface of the intermediate plate. The drive assembly includes a rotating plate, and several abutting protrusions are fixedly installed at equal intervals around the bottom surface of the rotating plate. Several extrusion protrusions are fixedly installed at equal intervals around the outer wall of the rotating plate.

[0009] Furthermore, a number of connecting columns are provided at equal intervals around the bottom surface of the connecting steel column. The bottom ends of the connecting columns pass through a number of arc-shaped grooves and are then fixedly installed with a positioning component, which includes a positioning cylinder.

[0010] Furthermore, several sliding grooves are equidistantly installed on the outer circumference of the positioning cylinder, ratchet blocks are slidably installed on the inner walls of the sliding grooves, slide rods are fixedly installed on the end faces of the ratchet blocks near the inner walls of the sliding grooves, sensing protrusions are fixedly installed on the ends of the slide rods away from the ratchet blocks after passing through the sliding grooves, and first springs are sleeved on the ends of the slide rods away from the ratchet blocks after passing through the outer wall.

[0011] Furthermore, a pin assembly is installed at the center of the bottom surface of the positioning cylinder. The pin assembly includes a lifting plate. Several downward pressing protrusions are equidistantly installed on the top circumference of the lifting plate. Several pin bodies are fixedly installed equidistantly on the bottom circumference of the lifting plate. The bottom ends of the pin bodies all pass through the bottom surface of the positioning cylinder and extend to the outside. A second spring is sandwiched between the bottom surface of the lifting plate and the bottom surface of the positioning cylinder.

[0012] Furthermore, the anti-detachment component includes a sliding frame, which is fixedly installed on the bottom surface of the traction seat housing. A positioning shell is slidably installed on the inner wall of the sliding frame, and the inner wall size of the positioning shell is adapted to the outer wall size of the positioning cylinder.

[0013] Furthermore, the inner wall of the positioning shell is provided with several positioning grooves at equal intervals around its circumference, the bottom surface of the positioning shell is provided with several positioning holes at equal intervals around its circumference, and a third spring is sandwiched between the outer rear wall of the positioning shell and the inner wall of the sliding frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. When the device of this utility model is in use, through the mechanical linkage structure between the pull rod, the wedge block body, the locking hook body and the locking hook spring, the operator can realize the automatic opening and positioning of the locking hook body when pulling the pull rod, so that the traction seat housing forms a stable insertion posture in the unconnected state, avoiding the problem that the traditional traction seat needs to manually adjust the hook direction before connection, and improving the convenience and safety of the connection preparation stage. 2. When the device of this utility model is in use, through the meshing transmission structure of the locking hook body, external gear, intermediate plate and drive component, the connecting steel column can drive the drive component to rotate during the insertion of the guide groove, so as to realize the synchronous action of the pin component and the positioning component. This allows the pin body and the ratchet block to complete the limiting cooperation in the vertical and radial directions respectively, thereby achieving automatic anti-disengagement positioning in multiple directions, effectively preventing the connecting steel column from loosening or slipping under external force or vibration conditions. 3. When the device of this utility model is in use, through the reset structure of the wedge spring and the wedge body, when the worker releases the pull rod, the wedge body can automatically move forward and abut against the front end of the locking hook body, so that the locking hook body can no longer rotate, forming a reliable mechanical locking state. The anti-loosening traction seat can achieve self-locking and anti-loosening after the work is completed, which significantly improves the safety and reliability of the traction connection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the traction seat housing structure of this utility model; Figure 4 This is an exploded view of the locking hook assembly structure of this utility model; Figure 5 This is an exploded view of the traction connection component structure of this utility model; Figure 6 This is an exploded view of the drive component structure of this utility model; Figure 7 This is an exploded view of the positioning component structure of this utility model; Figure 8 This is an exploded view of the pin assembly structure of this utility model; Figure 9 This is an exploded view of the anti-detachment component structure of this utility model; Figure 10 This is a cross-sectional view of the overall structure of this utility model; Figure 11 for Figure 10 Enlarged view of the structure at point A in the image; Figure 12 for Figure 10 Enlarged view of the structure at point B in the image.

[0016] In the picture: 1. Traction seat housing; 11. Connecting plate; 12. Guide groove; 13. Stop groove; 2. Support legs; 3. Hook assembly; 31. Hook body; 311. Internal gear; 312. Rotating hole; 313. Connecting arm; 32. Hook spring; 4. Pull rod; 5. Wedge body; 6. Wedge spring; 7. Traction connection assembly; 71. Connecting steel column; 711. Connecting column; 72. External gear; 721. Rotating sleeve; 73. Intermediate plate; 731. Arc groove; 74. Support arm; 75. Drive assembly; 751. Rotating plate; 752. Abutting protrusion; 753. Extrusion protrusion; 76. Positioning assembly; 761. Positioning cylinder; 762. Sliding groove; 763. Ratchet block; 764. Slide rod; 765. Sensing protrusion; 766. First spring; 77. Pin assembly; 771. Lifting plate; 772. Downward pressing protrusion; 773. Pin body; 774. Second spring; 8. Anti-detachment component; 81. Sliding frame; 811. Sliding rail; 82. Positioning shell; 821. Sliding bar; 822. Positioning groove; 823. Positioning hole; 83. Third spring. Detailed Implementation

[0017] 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.

[0018] Example 1: Please refer to Figures 1-5A type of anti-fall-off traction seat includes a traction seat housing 1. Support legs 2 are installed at both ends of the bottom surface of the traction seat housing 1. Specifically, connecting plates 11 are welded and fixed to both ends of the bottom surface of the traction seat housing 1. The two support legs 2 are rotatably connected to the two connecting plates 11 respectively. A torsion spring is fixedly installed between the pivot of the support leg 2 and the outer wall of the connecting plate 11, providing a reset function for the traction seat housing 1. A locking hook assembly 3 is installed on the bottom surface of the traction seat housing 1. The locking hook assembly 3 includes a locking hook body 31. A pull rod 4 is slidably inserted into the bottom surface of the traction seat housing 1. A wedge body 5 is fixedly installed at the end of the pull rod 4. The wedge body 5 is slidably installed on the front side of the locking hook body 31. Specifically, the traction seat housing... A limit frame is welded and fixed to the bottom surface of body 1. The pull rod 4 is slidably inserted into the inner wall of the limit frame. A wedge spring 6 is fixedly connected to the bottom surface of wedge body 5. The end of the wedge spring 6 away from wedge body 5 is fixedly connected to the limit frame. The wedge spring 6 provides a reset force to wedge body 5 and pull rod 4. A traction connection assembly 7 is fixedly snapped into the inner wall of the locking hook body 31. An anti-detachment assembly 8 is fixedly installed on the bottom surface of the traction seat housing 1. Specifically, a guide groove 12 is welded and fixed to the front end face of the traction seat housing 1. A stop groove 13 is opened at the center of the top surface of the traction seat housing 1. The traction connection assembly 7 is snapped and fixed to the locking hook body 31 through the guide groove 12. The traction connection assembly 7 eventually moves to the stop groove 13 and stops.

[0019] The locking hook body 31 is rotatably connected to the bottom surface of the traction seat housing 1. Several internal gears 311 are equidistantly arranged on the inner arc surface of the locking hook body 31. A locking hook spring 32 is fixedly connected to the outer wall of the locking hook body 31. Specifically, a positioning frame is welded and fixed to the bottom surface of the traction seat housing 1. A rotating shaft is welded and fixed to the positioning frame. A rotating hole 312 is opened on the top surface of the locking hook body 31, which is sleeved on the outer wall of the rotating shaft. A connecting arm 313 is welded and fixed to the outer wall of the locking hook body 31. One end of the locking hook spring 32 is fixedly connected to the connecting arm 313, and the end of the locking hook spring 32 away from the connecting arm 313 is fixedly connected to the positioning frame. The locking hook spring 32 provides a restoring force to the locking hook body 31.

[0020] Example 2: Please refer to Figures 2 to 12A type of anti-detachment traction seat, differing from Embodiment 1, in that the traction connection assembly 7 includes a connecting steel column 71, with an external gear 72 rotatably connected to the outer wall of the connecting steel column 71. The external gear 72 meshes with an internal gear 311. Specifically, both the top and bottom ends of the outer wall of the connecting steel column 71 are provided with blocking rings. The blocking ring at the top is used to prevent the connecting steel column 71 from slipping out of the locking hook body 31, and the blocking ring at the bottom is used to prevent the external gear 72 from slipping out of the outer wall of the connecting steel column 71. A rotating sleeve 721 is welded and fixed to the bottom end of the external gear 72. An intermediate disk 73 is coaxially fixedly installed on the bottom surface of the rotating sleeve 721, with equidistant openings on the top surface of the intermediate disk 73. The device has several vertically penetrating arc-shaped grooves 731. Specifically, the bottom end of the rotating sleeve 721 is open, and the intermediate disk 73 is fixedly connected to the bottom surface of the rotating sleeve 721 by bolts. A drive assembly 75 is coaxially fixedly installed at the center of the bottom surface of the intermediate disk 73. The drive assembly 75 includes a rotating plate 751. Several abutting protrusions 752 are fixedly installed at equal intervals around the bottom surface of the rotating plate 751, and several extrusion protrusions 753 are fixedly installed at equal intervals around the outer wall of the rotating plate 751. Specifically, a support arm 74 is fixedly installed on the bottom surface of the intermediate disk 73 by bolts, and the end of the support arm 74 away from the intermediate disk 73 is fixedly connected to the top surface of the rotating plate 751 by bolts.

[0021] A plurality of connecting columns 711 are equidistantly arranged on the bottom circumference of the connecting steel column 71. The bottom ends of the plurality of connecting columns 711 pass through a plurality of arc-shaped grooves 731 and are then fixedly installed with a positioning assembly 76. The positioning assembly 76 includes a positioning cylinder 761. Specifically, a drive assembly 75 is rotatably connected inside the positioning cylinder 761. A plurality of sliding grooves 762 are equidistantly arranged on the outer circumference of the positioning cylinder 761. A ratchet block 763 is slidably installed on the inner wall of each of the sliding grooves 762. A slide rod 764 is fixedly installed on the end face of each of the ratchet blocks 763 near the inner wall of the sliding groove 762. The slide rods 764 are further... After passing through the sliding groove 762, the ends of the ratchet blocks 763 are fixedly installed with sensing protrusions 765. After passing through the outer wall, the ends of the sliding rods 764 away from the ratchet blocks 763 are all fitted with first springs 766. Specifically, the sensing protrusions 765 are located in positions corresponding to the compression protrusions 753. When the drive assembly 75 rotates inside the positioning cylinder 761, the compression protrusions 753 abut against the sensing protrusions 765, compressing the first springs 766 and pushing the ratchet blocks 763 out of the sliding groove 762, thereby unfolding the ratchet blocks 763.

[0022] A pin assembly 77 is installed at the center of the inner bottom surface of the positioning cylinder 761. The pin assembly 77 includes a lifting plate 771. Several downward pressing protrusions 772 are equidistantly installed on the top circumference of the lifting plate 771, and several pin bodies 773 are equidistantly fixed on the bottom circumference of the lifting plate 771. The bottom ends of the pin bodies 773 all extend through the inner bottom surface of the positioning cylinder 761 to the outside. A second spring 774 is sandwiched between the bottom surface of the lifting plate 771 and the inner bottom surface of the positioning cylinder 761. Specifically... The positions of several downward pressing protrusions 772 correspond to the positions of several abutting protrusions 752 respectively. Several vertically penetrating tubes are installed equidistantly on the circumference of the bottom surface of the positioning cylinder 761. Several pin bodies 773 are slidably inserted into the inner walls of several penetrating tubes respectively. When the drive assembly 75 rotates inside the positioning cylinder 761, several abutting protrusions 752 abut against several downward pressing protrusions 772 respectively, compressing the second spring 774. The lifting plate 771 drives several pin bodies 773 to descend.

[0023] The anti-detachment component 8 includes a sliding frame 81, which is fixedly installed on the bottom surface of the traction seat housing 1. A positioning shell 82 is slidably installed on the inner wall of the sliding frame 81. The inner wall size of the positioning shell 82 is adapted to the outer wall size of the positioning cylinder 761. Specifically, the sliding frame 81 is fixedly installed on the bottom surface of the traction seat housing 1 by bolts. The left and right side walls of the positioning shell 82 are provided with sliding strips 821. The left and right side walls of the sliding frame 81 are provided with sliding rails 811. The sliding strips 821 are slidably connected to the inner wall of the sliding rails 811. The inner wall of the positioning shell 82 is provided with a number of positioning grooves 822 at equal intervals around its circumference. The inner bottom surface of the positioning shell 82 is provided with a number of positioning holes 823 at equal intervals around its circumference. A third spring 83 is sandwiched between the rear outer wall of the positioning shell 82 and the inner wall of the sliding frame 81.

[0024] Working principle: During the use of this device, the operator first pulls the pull rod 4. The pull rod 4 moves along the inner wall of the limit frame, the wedge spring 6 is stretched, and the wedge body 5 moves backward synchronously with the pull rod 4, so that the wedge body 5 is disengaged from the front end of the locking hook body 31. At this time, the locking hook spring 32 releases its elastic force, driving the locking hook body 31 to rotate around the rotating axis, so that the opening of the locking hook body 31 faces the guide groove 12, forming a ready-to-insert state. When the connecting steel column 71 at the bottom of the vehicle enters the traction seat housing 1 along the guide groove 12, the external gear 72 on the outer wall of the connecting steel column 71 meshes with the internal gear 311 on the inner wall of the locking hook body 31. As the connecting steel column 71 continues to be inserted into the stop groove 13, the positioning cylinder 761 gradually enters the positioning shell 82 in the anti-detachment assembly 8. At this time, the locking hook spring 32 is stretched, the locking hook body 31 rotates on the bottom surface of the traction seat housing 1, and the positioning cylinder 761 pushes the positioning shell 82 to slide along the sliding rail 811, compressing the third spring 83, so as to realize the synchronous linkage between the traction seat housing 1 and the positioning shell 82. During the movement of the connecting steel column 71, the locking hook body 31 drives the external gear 72 to rotate through the internal gear 311. Since the connecting steel column 71 is fixed to the bottom of the vehicle and cannot rotate, the rotation of the external gear 72 is transmitted to the intermediate plate 73 and the drive assembly 75 through the rotating sleeve 721. During the rotation of the rotating plate 751 inside the drive assembly 75, several abutting protrusions 752 abut against several downward pressing protrusions 772 on the top surface of the lifting plate 771, compressing the second spring 774 and causing the lifting plate 771 to move downward. The lifting plate 771 drives several pin bodies 773 to move downward. The bottom end of the pin body 773 is inserted into several positioning holes 823 on the bottom surface of the positioning shell 82 in sequence to form a vertical limit. At the same time, several extrusion protrusions 753 on the outer wall of the rotating plate 751 come into contact with several sensing protrusions 765. Under the action of external force, the sensing protrusions 765 compress the first spring 766, pushing the ratchet block 763 to slide outward along the sliding groove 762, so that the front end of the ratchet block 763 is inserted into the positioning groove 822 on the inner wall of the positioning shell 82, completing the radial limit. Through the multi-directional cooperation between the pin body 773 and the ratchet block 763, the connecting steel column 71 is stably positioned in both the vertical and radial directions, achieving anti-drop fixation. Once the device is secured, the operator releases the lever 4, the wedge spring 6 releases its elasticity, and pulls the wedge body 5 back to its original position. The rear end face of the wedge body 5 then comes into close contact with the front end face of the locking hook body 31, preventing the locking hook body 31 from rotating and creating a mechanical locking state. At this point, the device is fully operational.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A traction seat for preventing detachment, comprising a traction seat housing (1), characterized in that: The bottom surface of the traction seat housing (1) is equipped with support legs (2) at both ends. The bottom surface of the traction seat housing (1) is equipped with a locking hook assembly (3). The locking hook assembly (3) includes a locking hook body (31). A pull rod (4) is slidably inserted into the bottom surface of the traction seat housing (1). A wedge body (5) is fixedly installed at the end of the pull rod (4). The wedge body (5) is slidably installed on the front side of the locking hook body (31). A traction connection assembly (7) is fixedly snapped into the inner wall of the locking hook body (31). An anti-detachment assembly (8) is fixedly installed on the bottom surface of the traction seat housing (1).

2. The anti-fall-off traction seat according to claim 1, characterized in that: The locking hook body (31) is rotatably connected to the bottom surface of the traction seat housing (1). Several internal gears (311) are equidistantly arranged on the inner arc surface of the locking hook body (31). A locking hook spring (32) is fixedly connected to the outer wall of the locking hook body (31).

3. The anti-fall-off traction seat according to claim 1, characterized in that: The traction connection assembly (7) includes a connecting steel column (71), and an external gear (72) is rotatably connected to the outer wall of the connecting steel column (71). The external gear (72) meshes with the internal gear (311).

4. The anti-fall-off traction seat according to claim 3, characterized in that: The bottom end of the external gear (72) is welded and fixed with a rotating sleeve (721). The bottom surface of the rotating sleeve (721) is coaxially fixed with an intermediate disk (73). The top surface of the intermediate disk (73) is provided with several arc-shaped grooves (731) that run vertically through each other.

5. The anti-fall-off traction seat according to claim 4, characterized in that: A drive assembly (75) is coaxially fixed at the center of the bottom surface of the intermediate disk (73). The drive assembly (75) includes a rotating plate (751). Several abutting protrusions (752) are fixedly installed at equal intervals on the bottom circumference of the rotating plate (751). Several extrusion protrusions (753) are fixedly installed at equal intervals on the outer circumference of the rotating plate (751).

6. The anti-fall-off traction seat according to claim 5, characterized in that: The bottom surface of the connecting steel column (71) is provided with a plurality of connecting columns (711) at equal intervals. The bottom ends of the plurality of connecting columns (711) pass through a plurality of arc grooves (731) and are then fixedly installed with a positioning component (76). The positioning component (76) includes a positioning cylinder (761).

7. The anti-fall-off traction seat according to claim 6, characterized in that: The positioning cylinder (761) has several sliding grooves (762) equidistantly installed on its outer circumference. Each of the sliding grooves (762) has a ratchet block (763) slidably installed on its inner wall. Each of the ratchet blocks (763) has a slide rod (764) fixedly installed on its end face near the inner wall of the sliding groove (762). Each of the slide rods (764) has a sensing protrusion (765) fixedly installed after passing through the sliding groove (762) at its end away from the ratchet block (763). Each of the slide rods (764) has a first spring (766) sleeved on its end after passing through the outer wall.

8. The anti-fall-off traction seat according to claim 7, characterized in that: A pin assembly (77) is installed at the center of the bottom surface of the positioning cylinder (761). The pin assembly (77) includes a lifting plate (771). Several downward pressing protrusions (772) are equidistantly installed on the top surface of the lifting plate (771). Several pin bodies (773) are fixedly installed equidistantly on the bottom surface of the lifting plate (771). The bottom ends of several pin bodies (773) extend through the bottom surface of the positioning cylinder (761) to the outside. A second spring (774) is sandwiched between the bottom surface of the lifting plate (771) and the bottom surface of the positioning cylinder (761).

9. The anti-fall-off traction seat according to claim 1, characterized in that: The anti-detachment component (8) includes a sliding frame (81), which is fixedly installed on the bottom surface of the traction seat housing (1). A positioning shell (82) is slidably installed on the inner wall of the sliding frame (81), and the inner wall size of the positioning shell (82) is adapted to the outer wall size of the positioning cylinder (761).

10. The anti-fall-off traction seat according to claim 9, characterized in that: The positioning shell (82) has several positioning grooves (822) equidistantly arranged on the inner wall of the positioning shell (82), and several positioning holes (823) equidistantly arranged on the inner bottom surface of the positioning shell (82). A third spring (83) is sandwiched between the outer rear wall of the positioning shell (82) and the inner wall of the sliding frame (81).

Images