Mechanical lock connection mechanism for hard tow bar of tow truck and its use method and application

Abstract

The present invention belongs to the technical field of mechanical lock-type connection mechanisms, and specifically relates to a mechanical lock-type connection mechanism for a hard tow bar of a tow truck, and a method of use and application thereof. It comprises a coupling frame connected to the tow truck, a quick-change transition bracket connected to the hard tow bar, and a mechanical lock provided inside the quick-change transition bracket; the quick-change transition bracket is connected to the coupling frame by a coupling method; the mechanical lock is connected to the internal rotation of the quick-change transition bracket; the mechanical lock is connected to the coupling frame by a plug-in method. The present invention also includes a method of use and application of a mechanical lock-type connection mechanism. Based on the traditional hard tow bar coupling structure, the present invention changes the coupling structure, adds a quick-change transition bracket, a mechanical lock, and easily shifts the fork mechanism to achieve coupling and detachment of the hard tow bar. The present invention is suitable for the rapid coupling and disassembly of all mechanical structures, and can achieve the connection and detachment of structural parts without the aid of external tools. The coupling is reliable and the operation is convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical lock type connection mechanisms, and in particular relates to a mechanical lock type connection mechanism for a hard tow bar of a tow truck, a use method and an application thereof. Background Art

[0002] With the development of society, tow trucks, as a specialized type of vehicle, are widely used for roadside repairs, urban traffic violations, and emergency rescue. To meet customer needs, tow trucks are equipped with a variety of operating accessories, among which hard tow bars are a frequently used accessory. However, since tow trucks mostly operate outdoors, the hard tow bar is connected to the vehicle frame via a mechanical pin. If the clearance is too small, it will make disassembly difficult; if the clearance is too large, the impact during towing will be excessive, causing damage to the pin and mounting bracket.

[0003] Therefore, there is an urgent need for a connection mechanism between a hard tow bar and a vehicle frame that is easy to disassemble and install and firmly fixed. Summary of the Invention

[0004] In response to the deficiencies in the prior art, the present invention provides a mechanical lock connection mechanism, a method of use, and an application for a hard tow bar of a tow truck. The hard tow bar is hinged to a quick-change transition bracket and then connected to the vehicle frame. The quick-change transition bracket is equipped with a mechanical lock. After hooking, the fork can be easily waved to achieve locking and disengagement of the hook. The operation is flexible, the hooking is reliable, manpower is saved, and working efficiency is greatly improved.

[0005] To achieve the above-mentioned object, the present invention adopts the following technical solution: a mechanical lock type connection mechanism for a hard tow bar of a tow truck, comprising a mounting bracket connected to the tow truck, a quick-change transition bracket connected to the hard tow bar, and a mechanical lock provided inside the quick-change transition bracket;

[0006] The quick-change transition bracket is connected to the mounting frame by hanging; the mechanical lock is connected to the internal rotation of the quick-change transition bracket; the mechanical lock is connected to the mounting frame by plugging.

[0007] According to a further technical solution of the present invention, the quick-change transition bracket includes a bracket body, a welding shaft and a mounting shaft fixed in the bracket body, and a fork assembly arranged in the bracket body.

[0008] According to a further technical solution of the present invention, the shift fork assembly includes an I-shaped groove provided on the bracket body, a shaft sleeve fixed inside the bracket body, a rotating shaft provided inside the shaft sleeve, and a shift fork rotatably connected to the rotating shaft, wherein the shift fork extends to the outside of the bracket body through the I-shaped groove.

[0009] According to a further technical solution of the present invention, the bracket body includes a fixing plate connected to the hard tow bar, and two wing plates extending outwardly along opposite sides of the fixing plate, wherein the fixing plate and the two wing plates together form a U-shaped structure;

[0010] Preferably, a fork seat is provided between the shift fork and the rotating shaft, the shift fork seat is vertically rotationally connected to the rotating shaft, and the rotating shaft is horizontally rotationally connected to the sleeve.

[0011] According to a further technical solution of the present invention, the above-mentioned 'X' groove is provided on any one of the wing plates, and the above-mentioned shaft sleeve is fixed on the inner side of the other wing plate;

[0012] Preferably, the welding shaft and the mounting shaft are both fixed between the two wing plates;

[0013] Preferably, a connecting seat is provided on the fixing plate, and the hard tow bar is connected to the connecting seat via a pin shaft and a spring pin.

[0014] A further technical solution of the present invention is that the mechanical lock includes a first side plate and a second side plate connected to each other, and a lock tongue shaft arranged between the first side plate and the second side plate, the first side plate and the second side plate are both provided with corresponding shaft holes, and the second side plate is also provided with a guide groove.

[0015] According to a further technical solution of the present invention, the mounting frame includes a mounting frame body fixedly connected to the tow truck, an upper U-shaped slot and a lower U-shaped slot provided on the mounting frame body, and a locking slot is also provided on the mounting frame body between the upper U-shaped slot and the lower U-shaped slot.

[0016] According to a further technical solution of the present invention, the first side panel and the second side panel are fixedly connected via a connecting block;

[0017] Preferably, the shaft hole is sleeved on the mounting shaft, and the lock tongue shaft is plugged into the locking groove;

[0018] Preferably, the welding shaft is hung with the upper U-shaped slot, and the installation shaft is hung with the lower U-shaped slot.

[0019] The present invention includes a method for using a mechanical lock connection mechanism, comprising the following steps:

[0020] (1) Articulate the hard tow bar with the quick-change transition bracket, articulate the mechanical lock with the quick-change transition bracket, install the fork assembly, and rotate the fork to the right side of the "X" groove;

[0021] (2) Hang the welding shaft of the quick-change transition bracket on the upper U-shaped slot of the mounting bracket, and hang the mounting shaft on the lower U-shaped slot of the mounting bracket;

[0022] (3) Move the shift fork to the left along the "J" groove. The shift fork drives the mechanical lock to rotate counterclockwise along the guide groove of the mechanical lock. The lock tongue shaft on the mechanical lock is inserted into the locking groove of the mounting bracket. The quick-change transition bracket cannot be disengaged, and the mounting is completed.

[0023] (4) Move the shift fork to the right along the 'X' groove, the lock tongue shaft will come out, lift the quick-change transition bracket, and the disengagement is completed.

[0024] The present invention includes the application of a mechanical lock type connection mechanism,

[0025] The connecting mechanism is provided on the tow truck and is used to connect the tow truck and the hard tow bar;

[0026] The tow truck is provided with a frame rear leg fixing box, and the hook frame of the connecting mechanism is fixedly connected to the frame rear leg fixing box;

[0027] The hard tow bar is connected to the quick-change transition bracket.

[0028] The benefits of the present invention's mechanical lock-type connection mechanism, method of use, and application for a tow truck's hard tow bar are as follows: Based on the traditional hard tow bar attachment structure, the present invention modifies the attachment structure, adds a quick-change transition bracket, and mechanical locks, allowing for easy engagement and disengagement of the hard tow bar by shifting the fork mechanism. The present invention is suitable for rapid attachment and disassembly of all mechanical structures, enabling structural components to be connected and disengaged without the need for external tools, ensuring reliable attachment and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the connection structure after locking according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the connection structure after the embodiment of the present invention is opened;

[0031] Figure 3 This is a side structural diagram of a mounting bracket according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the three-dimensional structure of the mounting frame according to an embodiment of the present invention;

[0033] Figure 5 Schematic diagram of the side structure of a mechanical lock according to an embodiment of the present invention;

[0034] Figure 6 Schematic diagram of the internal cross-sectional structure of a mechanical lock according to an embodiment of the present invention;

[0035] Figure 7 Schematic diagram of the three-dimensional structure of a mechanical lock according to an embodiment of the present invention;

[0036] Figure 8 This is a side structural diagram of a quick-change transition bracket according to an embodiment of the present invention;

[0037] Figure 9 This is a schematic diagram of the internal cross-sectional structure of the quick-change transition bracket according to an embodiment of the present invention;

[0038] Figure 10This is a schematic diagram of the three-dimensional structure of the quick-change transition bracket according to an embodiment of the present invention;

[0039] Figure 11 AA structure schematic diagram of an embodiment of the present invention;

[0040] Part number description:

[0041] Hooking frame 1, hard tow bar 2, quick-change transition bracket 3, mechanical lock 4, bracket body 5, welding shaft 6, mounting shaft 7, fixing plate 8, wing plate 9, connecting seat 10, pin shaft 11, spring pin 12, S-shaped groove 13, shaft sleeve 14, rotating shaft 15, shift fork 16, shift fork seat 17, first side plate 18, second side plate 19, connecting block 20, lock tongue shaft 21, shaft hole 22, guide groove 23, hooking frame body 24, upper U-shaped slot 25, lower U-shaped slot 26, locking slot 27, frame rear leg fixing box 28. DETAILED DESCRIPTION

[0042] The specific implementation is further described below with reference to the accompanying drawings.

[0043] Example 1:

[0044] like Figure 1-11 As shown, the mechanical lock type connection mechanism for the hard tow bar of a tow truck includes a mounting bracket 1 connected to the tow truck, a quick-change transition bracket 3 connected to the hard tow bar 2, and a mechanical lock 4 provided inside the quick-change transition bracket 3;

[0045] The quick-change transition bracket 3 is connected to the mounting frame 1 by hanging; the mechanical lock 4 is connected to the internal rotation of the quick-change transition bracket 3; the mechanical lock 4 is connected to the mounting frame 1 by plugging.

[0046] The quick-change transition bracket 3 includes a bracket body 5, a welding shaft 6 and a mounting shaft 7 fixed in the bracket body 5, and a shift fork assembly provided in the bracket body 5;

[0047] The bracket body 5 includes a fixed plate 8 connected to the hard tow bar 2, and two wing plates 9 extending outward along opposite sides of the fixed plate 8. The fixed plate 8 and the two wing plates 9 together form a U-shaped structure. The U-shaped bracket body 5 satisfies the structural function of the quick transition bracket 3 while reducing the weight of the quick transition bracket 3 and the load on the mounting frame 1. The welding shaft 6 and the mounting shaft 7 are both vertically fixed between the two wing plates 9 and are arranged parallel to each other. A connecting seat 10 is provided on the fixed plate 8, and a pin hole is provided on the connecting seat 10 and the hard tow bar 2. A pin 11 is provided in the pin hole, and a spring pin hole for fixing a spring pin 12 is also provided at the end of the pin 11. The hard tow bar 2 is connected to the connecting seat 10 through the pin 11. After the spring pin 12 is inserted, it is ensured that the two cannot fall out and separate from each other.

[0048] The shift fork assembly includes an angular groove 13 provided on any of the wing plates 9 of the bracket body 5, a sleeve 14 fixed to the other wing plate 9 inside the bracket body 5, a rotating shaft 15 provided inside the sleeve 14, and a shift fork 16 rotatably connected to the rotating shaft 15. The shift fork 16 extends to the outside of the bracket body 5 through the angular groove 13. The shift fork 16 can only rotate along the angular groove 13. A shift fork seat 17 is also provided between the shift fork 16 and the rotating shaft 15. The shift fork seat 17 is vertically rotatably connected to the rotating shaft 15, and the rotating shaft 15 is horizontally rotatably connected to the sleeve 14. This allows the shift fork 16 to rotate horizontally or vertically along the angular groove 13. The provision of the angular groove 13 prevents the mechanical lock 4 from accidentally disengaging due to the vibration of the hard tow bar 2, and can only be separated from the hitch frame 1 by the rotation of the shift fork 16.

[0049] The mechanical lock 4 includes a first side plate 18 and a second side plate 19 connected to each other, and the first side plate 18 and the second side plate 19 are fixedly connected by a connecting block 20; and a lock tongue shaft 21 fixed between the first side plate 18 and the second side plate 19, and the lock tongue shaft 21 partially extends to the outside of the mechanical lock 4; the first side plate 18 and the second side plate 19 are respectively provided with a shaft hole 22 corresponding to each other, and the mounting shaft 7 can be sleeved in the two shaft holes 22 to connect the mechanical lock 4 with the quick-change transition bracket 3, and the second side plate 19 is also provided with a guide groove 23, and the shift fork 16 passes through the guide groove 23 and the "F" groove 13 in sequence and extends to the outside of the quick-change transition bracket 3, and the width of the guide groove 23 is the same as that of the shift fork 16, which limits the mechanical lock 4 to rotate only under the action of the shift fork 16 and cannot shake freely. A recessed portion is provided on the first side plate 18 to prevent the mechanical lock 4 from blocking the installation of the shift fork assembly.

[0050] The mounting frame 1 includes a mounting frame body 24 fixedly connected to the tow truck, an upper U-shaped slot 25 and a lower U-shaped slot 26 provided on the mounting frame body 24, and a locking slot 27 is further provided on the mounting frame body 24 between the upper U-shaped slot 25 and the lower U-shaped slot 26. The tongue shaft 21 is plugged into the locking slot 27, the welding shaft 6 is mounted on the upper U-shaped slot 25, and the mounting shaft 7 is mounted on the lower U-shaped slot 26.

[0051] The present invention includes a method for using a mechanical lock connection mechanism, comprising the following steps:

[0052] (1) Articulate the hard tow bar 2 with the quick-change transition bracket 3, sleeve the shaft hole 22 of the mechanical lock 4 on the mounting shaft 7, articulate the mechanical lock 4 with the quick-change transition bracket 3, install the fork assembly on the wing plate 9, and rotate the fork 16 to the right side of the "X" groove 13;

[0053] (2) Hang the welding shaft 6 of the quick-change transition bracket 3 on the upper U-shaped slot 25 of the mounting frame 1, and hang the mounting shaft 7 on the lower U-shaped slot 26 of the mounting frame 1;

[0054] (3) Move the shift fork 16 to the left along the "X" groove 13. The shift fork 16 drives the mechanical lock 4 to rotate counterclockwise along the guide groove 23 of the mechanical lock 4. The lock tongue shaft 21 on the mechanical lock 4 is inserted into the locking groove 27 of the mounting bracket 1. The quick-change transition bracket 3 cannot be disengaged, and the mounting is completed.

[0055] (4) Move the shift fork 16 to the right along the "X" groove 13, the lock tongue shaft 21 is disengaged, and the quick-change transition bracket 3 is lifted to complete the disengagement.

[0056] The present invention includes the application of a mechanical lock type connection mechanism,

[0057] The connecting mechanism is provided on the tow truck and is used to connect the tow truck and the hard tow bar;

[0058] The tow truck is provided with a vehicle frame rear leg fixing box 28 , and the coupling frame 1 of the connecting mechanism is fixedly connected to the vehicle frame rear leg fixing box 28 ; the hard tow bar 2 is connected to the quick-change transition bracket 3 .

[0059] Example 2:

[0060] like Figure 1-11 As shown, the same points as Example 1 are not repeated here, but the differences are as follows:

[0061] The X-shaped groove 13 in Example 1 is replaced by a V-shaped groove.

[0062] Example 3:

[0063] like Figure 1-11 As shown, the same points as Example 1 are not repeated here, but the differences are as follows:

[0064] The "X" groove 13 in Example 1 is replaced by an inverted V-shaped groove.

[0065] Example 4:

[0066] like Figure 1-11 As shown, the same points as Example 1 are not repeated here, but the differences are as follows:

[0067] The X-shaped groove 13 in Example 1 is replaced by an N-shaped groove.

[0068] Example 5:

[0069] like Figure 1-11 As shown, the same points as Example 1 are not repeated here, but the differences are as follows:

[0070] The "X" groove 13 in embodiment 1 is replaced by a W-shaped groove or an inverted W-shaped groove.

[0071] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made based on the essence of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A mechanical lock connection mechanism for a tow truck hard tow bar, characterized by: It includes a mounting bracket connected to a tow truck, a quick-change transition bracket connected to a hard tow bar, and a mechanical lock arranged inside the quick-change transition bracket; the quick-change transition bracket is connected to the mounting bracket by a hanging manner; the mechanical lock is connected to the internal rotation of the quick-change transition bracket; the mechanical lock is connected to the mounting bracket by a plug-in manner, and the quick-change transition bracket includes a bracket body, a welding shaft and a mounting shaft fixed in the bracket body, and a fork assembly arranged in the bracket body. The shift fork assembly includes a cross-shaped groove provided on the bracket body, a shaft sleeve fixed inside the bracket body, a rotating shaft provided inside the shaft sleeve, and a shift fork rotatably connected to the rotating shaft. The shift fork extends to the outside of the bracket body through the cross-shaped groove. The bracket body includes a fixed plate connected to the hard drag rod, and two wing plates extending outward along opposite sides of the fixed plate. The fixed plate and the two wing plates together form a U-shaped structure. A fork seat is also provided between the fork and the rotating shaft. The fork seat is vertically connected to the rotating shaft, and the rotating shaft is horizontally connected to the shaft sleeve. Any of the wing plates is provided with the "X" groove, and the inner side of the other wing plate is fixed with the shaft sleeve; the welding shaft and the installation shaft are both fixed between the two wing plates; the fixing plate is provided with a connecting seat, and the hard drag rod is connected to the connecting seat through a pin shaft and a spring pin. The mechanical lock includes a first side plate and a second side plate connected to each other, and a lock tongue shaft arranged between the first side plate and the second side plate, the first side plate and the second side plate are both provided with corresponding shaft holes, and the second side plate is also provided with a guide groove; The mounting frame includes a mounting frame body fixedly connected to the tow truck, and a locking groove is further provided on the mounting frame body; The lock tongue shaft is plugged into the locking groove.

2. The mechanical lock connection mechanism for the hard tow bar of a tow truck according to claim 1, characterized in that: The mounting frame body is provided with an upper U-shaped slot and a lower U-shaped slot.

3. The mechanical lock connection mechanism for the hard tow bar of a tow truck according to claim 1, characterized in that: The first side plate and the second side plate are fixedly connected via a connecting block; the shaft hole is sleeved on the mounting shaft, the welding shaft is hung with the upper U-shaped slot hole, and the mounting shaft is hung with the lower U-shaped slot hole.

4. A method for using the mechanical lock connection mechanism according to any one of claims 1 to 3, characterized in that: The method comprises the following steps: (1) hinge the hard tow bar to the quick-change transition bracket, hinge the mechanical lock to the quick-change transition bracket, install the shift fork assembly, and rotate the shift fork to the right side of the "J" groove; (2) hang the welding shaft of the quick-change transition bracket on the upper U-shaped slot of the mounting frame, and hang the installation shaft on the lower U-shaped slot of the mounting frame; (3) move the shift fork to the left along the "J" slot, and the shift fork drives the mechanical lock to rotate counterclockwise along the guide groove of the mechanical lock. The lock tongue shaft on the mechanical lock is inserted into the locking groove of the mounting frame, and the quick-change transition bracket cannot be disengaged, and the connection is completed; (4) move the shift fork to the right along the "J" slot, and the lock tongue shaft is disengaged. Lift the quick-change transition bracket, and the disengagement is completed.

5. An application of the mechanical lock connection mechanism according to any one of claims 1 to 3, characterized in that: The connecting mechanism is provided on the tow truck and is used to connect the tow truck and the hard tow bar; the tow truck is provided with a frame rear leg fixing box, and the connecting frame of the connecting mechanism is fixedly connected to the frame rear leg fixing box; the hard tow bar is connected to the quick-change transition bracket.

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