Semi-automatic tow hook

Abstract

The utility model discloses a semi-automatic tow hook which comprises a cross beam, side plates are vertically welded on two sides of the cross beam, and the side plates are used for enhancing connection strength of the cross beam and a vehicle chassis. The end, away from the cross beam, in the fixing frame is rotationally connected with a rotating shaft, and the rotating shaft is parallel to the cross beam. One end of the rotating shaft extends out of the fixing frame, a towing hook piece is fixedly installed in the middle of one end in the fixing frame, and a limiting assembly for positioning the rotating shaft is arranged on one side of the fixing frame at the extending end of the rotating shaft. According to the semi-automatic tow hook, multi-angle adjustment and automatic locking of the tow hook piece are achieved through the limiting assembly, and the semi-automatic tow hook meets the requirements of different tow scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle traction device technical field, concretely is a kind of semi-automatic trailer hook. BACKGROUND

[0002] Traditional trailer hook usually adopts fixed structure, cannot flexibly adjust the angle of tow hook piece according to trailer demand, to lead to use limited.Partially adjustable trailer hook can rotate, but lack reliable limiting device, and angle deviation is caused by external force during towing process, there is security risk.In addition, the installation structure of existing trailer hook is complex, and is inconvenient to disassemble and assemble.

[0003] In view of the above problems, the present application provides a kind of semi-automatic trailer hook, the multi-angle fixation of tow hook piece is realized by limiting component, while simplifying installation structure, improve stability and convenience. CONTENT OF UTILITY MODEL

[0004] (1) technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a kind of semi-automatic trailer hook, solves the problems raised in the above background art.

[0006] (2) technical scheme

[0007] To achieve the above object, the utility model is realized by the following technical scheme: a kind of semi-automatic trailer hook, including crossbeam, the side plate for strengthening fixation is vertically welded on the both sides of crossbeam, fixed frame is installed in the middle of crossbeam, the end of fixed frame away from crossbeam is rotatably connected with rotating shaft, the rotating shaft is parallel with crossbeam, the end of rotating shaft extends to the outside of fixed frame, tow hook piece is equipped in the middle of rotating shaft, the side of fixed frame is equipped with limiting component for positioning rotating shaft.

[0008] Preferably, the end of rotating shaft extending to the outside of fixed frame has outer spline, recess is formed in the end surface of outer spline, the limiting component includes tension spring and inner spline sleeve, the end of inner spline sleeve is closed structure, the inner spline sleeve is axially slidably connected with outer spline, one end of tension spring is fixedly installed in recess and the other end is fixedly installed in inner spline sleeve, the tension spring forces inner spline sleeve to adhere to the end surface of rotating shaft, the side of fixed frame corresponding to inner spline sleeve is equipped with a plurality of equally-angled limiting grooves, the end of inner spline sleeve is installed with limiting column, and the limiting column is used for being inserted into limiting groove for limiting.

[0009] Preferably, the side of fixed frame away from crossbeam is equipped with tow hook groove.

[0010] Preferably, the tow hook component includes a fixed seat, a limiting plate, a connecting seat, and a connecting ball. The fixed seat is fixedly installed in the middle of the rotating shaft. The limiting plate is fixedly installed on one side of the fixed seat and fits against the inside of the fixed frame. The connecting seat is located on the other side of the limiting plate. The connecting seat and the limiting plate are fixed together by a tow hook bolt. The tow hook bolt can abut against the tow hook groove. The connecting ball is installed on one side of the connecting seat.

[0011] Preferably, the bottom of the fixing frame is provided with a back plate, the back plate extends outward and covers the crossbeam, and the end face of the back plate is provided with a welding joint.

[0012] Preferably, a fixing groove is provided on one side of the fixing frame, and the fixing frame is installed on the crossbeam through the fixing groove.

[0013] (III) Beneficial Effects

[0014] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0015] 1. The tow hook is adjustable at multiple angles and automatically locked using a limiting component to adapt to different towing scenarios. The tension spring causes the limiting post to engage with the limiting groove. When the tow hook needs to be adjusted, the inner spline sleeve is pulled outward to stretch the tension spring, causing the limiting post to disengage from the limiting groove. The tow hook can then rotate to the target angle under the drive of the rotating shaft. After that, the inner spline sleeve is released, and the limiting post automatically engages with the corresponding limiting groove to complete the fixation.

[0016] 2. The limiting plate and the hook groove work together, combined with the fixing design of the back plate, to effectively reduce vibration and offset during dragging;

[0017] 3. Simple structure, easy to assemble and disassemble, suitable for various vehicle models. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the tow hook component of this utility model;

[0020] Figure 3 This is a schematic diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the tension spring of this utility model;

[0022] Figure 5 This is a rear view of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Crossbeam; 2. Side plate; 3. Fixing bracket; 31. Fixing groove; 32. Hook groove; 33. Limiting groove; 34. Back plate; 35. Weld joint; 4. Limiting assembly; 41. External spline; 42. Internal spline sleeve; 421. Limiting post; 43. Tension spring; 5. Hook component; 51. Fixing seat; 52. Limiting plate; 53. Connecting seat; 54. Engaging ball; 55. Hook bolt; 6. Shaft; 61. Groove. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1-5 As shown: A semi-automatic trailer hitch includes a crossbeam 1, with side plates 2 vertically welded to both sides of the crossbeam 1. The side plates 2 are used to enhance the connection strength between the crossbeam 1 and the vehicle chassis. A fixing frame 3 is installed in the middle of the crossbeam 1. A rotating shaft 6 is rotatably connected to the end of the fixing frame 3 away from the crossbeam 1. The rotating shaft 6 is arranged parallel to the crossbeam 1. One end of the rotating shaft 6 extends outside the fixing frame 3, and a tow hook 5 is fixedly installed in the middle of the other end located inside the fixing frame 3. A limiting component 4 for positioning the rotating shaft 6 is provided on one side of the fixing frame 3 at the extended end of the rotating shaft 6.

[0027] The end of the rotating shaft 6 extending outside the fixed frame 3 has an external spline 41, and the end face of the external spline 41 has a groove 61.

[0028] The limiting assembly 4 includes an inner spline sleeve 42 and a tension spring 43. One end of the inner spline sleeve 42 is closed, and its inner wall has an inner spline that meshes with the outer spline 41. One end of the tension spring 43 is fixed in the groove 61, and the other end is fixed inside the inner spline sleeve 42, forcing the inner spline sleeve 42 to fit against the end face of the rotating shaft 6. The fixing bracket 3 has multiple equally angled limiting grooves 33 circumferentially distributed on one side of the inner spline sleeve 42. A limiting post 421 is installed at the end of the inner spline sleeve 42, which can be inserted into the limiting groove 33 to lock the angle of the rotating shaft 6. When adjustment is required, the inner spline sleeve 42 is pulled outward to disengage from the limiting groove 33, the rotating shaft 6 is rotated to the target angle and then released, and the tension spring 43 drives the limiting post 421 to re-engage into the corresponding limiting groove 33.

[0029] The tow hook component 5 includes a fixed base 51, a limiting plate 52, a connecting base 53, a connecting ball 54, and a tow hook bolt 55. The fixed base 51 is welded to the middle of the rotating shaft 6. The limiting plate 52 is fixed to one side of the fixed base 51 and fits against the inner wall of the fixing frame 3 to prevent the rotating shaft 6 from moving axially. The connecting base 53 is located on the other side of the limiting plate 52 and is fixed to the limiting plate 52 by the tow hook bolt 55.

[0030] The mounting bracket 3 has a hook groove 32 on the side away from the crossbeam 1 to accommodate the hook bolt 55 of the hook component 5. The end of the hook bolt 55 can abut against the hook groove 32 to restrict the radial movement of the hook component 5. The engagement ball 54 is installed on the outside of the connecting seat 53 for connecting the trailer rope or hook.

[0031] The bottom of the fixing frame 3 is provided with a back plate 34, which extends outward and covers the crossbeam 1. The end face of the back plate 34 is provided with a welding port 35, and the connection between the fixing frame 3 and the crossbeam 1 is further strengthened by welding.

[0032] A fixing groove 31 is provided on one side of the fixing frame 3 for fixing the fixing frame 3 to the crossbeam 1, and the fixing frame 3 is more stable with the cooperation of the back plate 34.

[0033] The above-described embodiments are provided for illustrative purposes. Based on the above description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this utility model is not limited to the contents of the specification; its protection scope must be determined according to the claims.

Claims

1. A semi-automatic trailer hitch, characterized in that: The device includes a crossbeam (1), on both sides of which are vertically welded side plates (2) for reinforcement and fixation. A fixing frame (3) is installed in the middle of the crossbeam (1). A rotating shaft (6) is rotatably connected to one end of the fixing frame (3) away from the crossbeam (1). The rotating shaft (6) is arranged parallel to the crossbeam (1). One end of the rotating shaft (6) extends to the outside of the fixing frame (3). A hook (5) is provided in the middle of the rotating shaft (6). A limiting component (4) for positioning the rotating shaft (6) is provided on one side of the fixing frame (3).

2. The semi-automatic trailer hitch according to claim 1, characterized in that: The shaft (6) extends to one end of the fixed frame (3) and has an external spline (41). The end face of the external spline (41) has a groove (61). The limiting component (4) includes a tension spring (43) and an inner spline sleeve (42). One end of the inner spline sleeve (42) is a closed structure. The inner spline sleeve (42) is axially slidably connected to the external spline (41). One end of the tension spring (43) is fixedly installed in the groove (61) and the other end is fixedly installed in the inner spline sleeve (42). The tension spring (43) forces the inner spline sleeve (42) to fit against the end face of the shaft (6). The fixed frame (3) has multiple limiting grooves (33) set at equal angles on one side corresponding to the inner spline sleeve (42). One end of the inner spline sleeve (42) is equipped with a limiting post (421). The limiting post (421) is used to be inserted into the limiting groove (33) for limiting.

3. The semi-automatic trailer hitch according to claim 1, characterized in that: The fixed frame (3) has a hook groove (32) on the side away from the crossbeam (1).

4. A semi-automatic trailer hitch according to claim 3, characterized in that: The tow hook component (5) includes a fixed seat (51), a limiting plate (52), a connecting seat (53), and a connecting ball (54). The fixed seat (51) is fixedly installed in the middle of the rotating shaft (6). The limiting plate (52) is fixedly installed on one side of the fixed seat (51) and fits against the inside of the fixed frame (3). The connecting seat (53) is located on the other side of the limiting plate (52). The connecting seat (53) and the limiting plate (52) are fixed together by a tow hook bolt (55). The tow hook bolt (55) can abut against the tow hook groove (32). The connecting ball (54) is installed on one side of the connecting seat (53).

5. A semi-automatic trailer hitch according to claim 1, characterized in that: The fixing frame (3) has a back plate (34) at the bottom. The back plate (34) extends outward and covers the crossbeam (1). The end face of the back plate (34) has a welding port (35).

6. A semi-automatic trailer hitch according to claim 1, characterized in that: The fixing frame (3) has a fixing groove (31) on one side, and the fixing frame (3) is installed on the crossbeam (1) through the fixing groove (31).

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