Auxiliary bracket for supporting and pulling device of rescue vehicle

Abstract

The present invention discloses an auxiliary bracket of a towing device of a rescue vehicle, characterized in that the buffer bracket includes an independent bridge buffer bracket and an integral bridge buffer bracket, and the limit bracket includes a tire limit bracket and a suspension limit bracket. When the front axle of the rescued vehicle is an independent suspension axle chassis, the independent bridge buffer bracket is used, and when the front axle of the rescued vehicle is an integral axle chassis, the integral bridge buffer bracket is used. When the front axle suspension structure strength of the rescued vehicle is high and it is convenient to install the suspension limit bracket, the suspension limit bracket is preferably used, and when the ground clearance of the rescued vehicle suspension is large and it is convenient to use the tire limit bracket, the tire limit bracket can be used. The present invention is installed between the towing device of the rescue vehicle and the cross beam of the front axle of the rescued vehicle, which can effectively avoid rigid contact between the towing device and the rescued vehicle, reduce the impact between vehicles during the towing operation, and eliminate the interference between the front axle or chassis of the rescued vehicle and the towing device.

Description

Technical Field

[0001] The invention relates to an auxiliary bracket of a towing device of a rescue vehicle, belonging to the technical field of towing. Background Art

[0002] The towing device is one of the important components of the rescue vehicle. This device can cooperate with other equipment on the rescue vehicle to rescue and transport the rescued vehicle by lifting and pulling.

[0003] During the towing operation, the towing device's supporting arm needs to be tied and fixed to the front axle of the rescued vehicle with a chain. Due to the different chassis and front axle structures of different rescued vehicles, the structure is complex. During the towing and binding, the supporting arm and the chassis of the rescued vehicle are easy to interfere with each other, and the rigid contact between the two is easy to cause secondary damage to the chassis of the rescued vehicle. In addition, the rescued vehicle needs to be limited in multiple directions during the towing and binding, and the simple use of chain fixation cannot meet the needs.

[0004] The utility model with patent number CN207045213U discloses a towing vehicle. The patent introduces the composition of the towing vehicle and the towing device in detail, but the structure does not involve auxiliary tools used when the towing device is working.

[0005] The utility model with patent number CN211764743U discloses a rear-movement traction rescue device. The patent introduces in detail the composition structure of the rear-movement traction rescue device and the supporting device, but does not introduce the auxiliary tools used when the supporting device is working.

[0006] The utility model with patent number CN217074162U discloses a towing and transporting device for heavy wheeled vehicles. The patent introduces a positioning device which adopts a simple latch positioning and has no automatic hole finding function.

[0007] The utility model with patent number CN216580282U discloses a support arm structure. The patent introduces a rubber block used on the support arm, which is different from the structure of the support auxiliary tool provided by the present invention.

[0008] The rescue vehicle towing device involved in the prior art does not have a systematic design of the auxiliary tools used when connecting the towing device and the rescued vehicle. During the towing operation, if there are no auxiliary devices such as buffer brackets and limit brackets between the towing device and the rescued vehicle, it is easy to cause secondary damage to the rescued vehicle, and the towing connection is not reliable, posing a safety hazard. Summary of the invention

[0009] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an auxiliary bracket for a rescue vehicle towing device, which can effectively avoid rigid contact between the towing device and the rescued vehicle, reduce the impact between the vehicles during the towing operation, and eliminate the interference between the front axle or chassis of the rescued vehicle and the towing device.

[0010] In order to achieve the above-mentioned object, the present invention provides an auxiliary bracket of a rescue vehicle towing device, comprising a buffer bracket;

[0011] The buffer bracket includes an independent bridge buffer bracket. If the front axle of the rescued vehicle is an independent suspension bridge chassis, the independent bridge buffer bracket is used;

[0012] The independent bridge buffer bracket includes a nylon block a, a plurality of shaft sleeve assemblies, a pin shaft and an R-type card;

[0013] A support arm groove matching the support arm is provided at the lower end of the nylon block a;

[0014] Several shaft sleeve assemblies are fixedly mounted on the nylon block a, and the pin shaft is inserted into the shaft sleeve assembly and fixed by an R-type clamp;

[0015] A plurality of shaft sleeve assembly holes are formed on the shaft sleeve assembly, a plurality of pin shaft holes are formed on the pin shaft, and the R-type card is inserted into different pin shaft holes and shaft sleeve assembly holes to adjust the pin shaft to a pulled-out state or an inserted state. The length of the pin shaft extending out of the shaft sleeve assembly in the pulled-out state is greater than the length of the pin shaft extending out of the shaft sleeve assembly in the inserted state.

[0016] When installing the independent bridge buffer bracket, adjust the pin shaft to the pulled-out state, buckle the bracket arm groove of the nylon block a on the bracket arm and slide it to the position where the bracket arm contacts the front axle of the chassis of the rescued vehicle;

[0017] Adjust the pin shaft to the insertion state so that the pin shaft is inserted into the support arm pin hole opened on the support arm.

[0018] Preferably, the buffer bracket includes an integral bridge buffer bracket. If the front axle of the rescued vehicle is an integral axle chassis, the integral bridge buffer bracket is used.

[0019] Preferably, the integral bridge buffer bracket includes a plurality of lug plates, a nylon block b, a shaft, a slot bracket, and a nylon block c. The plurality of lug plates are fixedly arranged on both sides of the slot bracket. The lower end of the slot bracket is provided with a slot bracket groove matching the support arm. The upper ends of the nylon blocks b and c are provided with a front axle beam groove matching the front axle beam of the rescued vehicle.

[0020] Nylon block b and nylon block c are placed above the slot bracket, the shaft passes through nylon block b, nylon block c and the lug plate, both ends of the shaft are fixedly connected to the lug plates on both sides of the slot bracket, and nylon block b and nylon block c slide along the shaft;

[0021] When installing the integral bridge buffer bracket, buckle the groove of the groove bracket on the bracket arm, and slide the groove bracket to the position where the bracket arm contacts the front axle of the chassis of the rescued vehicle;

[0022] Slide nylon block b or nylon block c along the shaft to make the groove of the front axle beam fit on the front axle beam of the rescued vehicle.

[0023] Preferably, the integral bridge buffer bracket includes a clip, and shaft pin holes are opened on both sides of the shaft. The clip passes through the shaft pin holes to fix the shaft on the support ear plate.

[0024] Preferably, a tire limit bracket is included, and if the ground clearance of the rescued vehicle's suspension is greater than a set threshold, the tire limit bracket is selected;

[0025] The tire limiting bracket includes a square tube and a trough body; a trough body groove matching the supporting arm is provided at the lower end of the trough body, a square groove matching the square tube is provided on the trough body, and the square tube is fixedly installed in the square groove;

[0026] When installing the tire limiting bracket, buckle the groove of the trough body on the supporting arm, and slide the trough body toward the front axle of the chassis of the rescued vehicle until the square tube contacts the tire of the front axle of the rescued vehicle.

[0027] Preferably, the tire limiting bracket includes a threaded sleeve, a spring pin, a cap, a threaded block, a spring and a second shaft;

[0028] The threaded sleeve is fixedly arranged on the groove body, the threaded block is spirally connected to the threaded sleeve, and the threaded block presses the spring and the second shaft into the threaded sleeve;

[0029] The diameter of the middle end of the second shaft is larger than the diameter of the two ends of the second shaft, and one end of the second shaft passes through and extends into the slot body;

[0030] The cap is fixedly mounted on the second shaft through a spring pin, and the cap and the threaded block are in inclined contact in the circumferential direction;

[0031] The second shaft is pulled out by rotating the cap with the spring pin, and the spring automatically resets the second shaft after release.

[0032] Preferably, the tire limiting bracket includes a second spring pin, a second rotating cap, a third shaft, an oil cup and a stud;

[0033] The oil cup is fixedly mounted on the tank body, the second rotating cap is screwed to the threaded sleeve, the oil cup is mounted on the threaded sleeve, and one end of the third shaft passes through and extends into the tank body;

[0034] A second spring pin is installed at the rear end of the stud, and the second spring pin rotates to drive the stud to be pulled out of or inserted into the threaded sleeve;

[0035] When installing the tire limiting bracket, unscrew the stud, rotate the second rotating cap to make the third axis and the front end of the stud exit the slot, then buckle the slot on the support arm and slide it toward the front axle of the rescued vehicle chassis until the square tube contacts the tire of the front axle of the rescued vehicle; then release the cap and the second rotating cap, slide the tire limiting bracket to make the third axis automatically insert into the support arm pin hole of the support arm under the action of the spring, at this time rotate the second spring pin on the stud to insert the stud into the support arm pin hole of the support arm.

[0036] Preferably, the tire limiting bracket includes a clip and a pin, and the square tube is fixedly installed in the square groove of the groove body through the pin and the clip.

[0037] Preferably, a suspension limit bracket is included. If the strength of the front axle suspension structure of the rescued vehicle is higher than a set threshold, the suspension limit bracket is selected.

[0038] Preferably, the suspension limit bracket includes a T-shaped frame and a slot body, the lower end of the slot body is provided with a slot body groove matching the support arm, the slot body is provided with a T-shaped slot matching the T-shaped frame, and the T-shaped frame is fixedly installed in the T-shaped slot;

[0039] When installing the tire limiting bracket, buckle the groove of the trough body on the support arm, and slide the trough body toward the front axle of the chassis of the rescued vehicle until the T-shaped frame contacts the tire of the front axle of the rescued vehicle.

[0040] The beneficial effects achieved by the present invention are:

[0041] The rescue vehicle involved in the present invention is an engineering vehicle specially used to rescue wheeled vehicles that have broken down or lost their ability to drive due to traffic accidents. This type of rescue vehicle can tow the broken down vehicle and send it to a repair site. The towing device is the core component of the rescue vehicle towing operation. The auxiliary bracket of the towing device of the rescue vehicle involved in the present invention is a set of auxiliary tools used in towing conditions, including a buffer bracket and a limit bracket. The buffer bracket is installed between the towing device of the rescue vehicle and the front axle crossbeam of the rescued vehicle to avoid rigid contact between the towing device and the rescued vehicle, reduce the impact between the vehicles during the towing operation, and prevent the front axle or chassis of the rescued vehicle from interfering with the towing device. The limit bracket is installed on the supporting arm of the towing device, which can limit the rescued vehicle. During the towing operation, it can prevent the rescued vehicle and the towing device from slipping and jumping, and prevent secondary damage to the rescued vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the towing operation;

[0043] Figure 2 It is a schematic diagram of the installation of the independent bridge buffer bracket;

[0044] Figure 3 It is a schematic diagram of the installation of the integral bridge buffer bracket;

[0045] Figure 4 It is a schematic diagram of the installation of the tire limit bracket;

[0046] Figure 5 It is a schematic diagram of the installation of the suspension limit bracket;

[0047] Figure 6 It is a bottom view of the independent bridge buffer support structure;

[0048] Figure 7 yes Figure 6 AA section view;

[0049] Figure 8 It is a three-dimensional diagram of the independent bridge buffer support structure;

[0050] Fig. 9 It is a bottom view of the pin shaft in the independent bridge buffer bracket in the pulled-out state;

[0051] Fig.10 This is a bottom view of the independent bridge buffer bracket with the pin shaft in the inserted state;

[0052] Fig.11 It is a three-dimensional diagram of the overall bridge buffer bracket structure;

[0053] Fig.12 It is the front view of the integral bridge buffer support structure;

[0054] Fig.13 It is the left view of the integral bridge buffer support structure;

[0055] Fig.14 It is a three-dimensional diagram of the tire limiting bracket structure;

[0056] Fig.15 It is the front view of the tire limiting bracket structure;

[0057] Fig.16 It is a bottom view of the tire limiting bracket structure;

[0058] Fig.17 is a top-down cross-sectional view of the tire limiting bracket structure;

[0059] Fig.18 yes Fig.17 Sectional view of part I;

[0060] Fig.19 It is a three-dimensional diagram of the suspension limit bracket structure.

[0061] Meaning of the reference numerals: 1. rescue vehicle; 2. supporting device; 3. rescued vehicle; 201. supporting arm; 4. independent bridge buffer bracket; 5. integral bridge buffer bracket; 6. tire limit bracket; 7. suspension limit bracket; 401. nylon block a; 402. bushing assembly; 403. pin; 404. R-type clamp; 501. nylon block b; 502. shaft; 503. slot bracket; 504. nylon block c; 505. clip; 601. square tube; 602. slot body; (603). spring pin; 604. cap; 605. threaded block; 606. oil cup; 607. spring; 608. shaft; 609. stud; 610. second clip; 611. pin; 701. T-frame. DETAILED DESCRIPTION

[0062] The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and are not intended to limit the protection scope of the present invention.

[0063] It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention, they are only used to explain the relative position relationship and movement status of the various components under a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0064] In addition, if the descriptions of "first" and "second" etc. are involved in the present invention, they are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0065] The present invention is a set of auxiliary brackets used in a rescue vehicle towing device, comprising a buffer bracket and a limit bracket, wherein the buffer bracket comprises an independent bridge buffer bracket and an integral bridge buffer bracket, and the limit bracket comprises a tire limit bracket and a suspension limit bracket.

[0066] When the front axle of the rescued vehicle is an independent suspension axle chassis, an independent axle buffer bracket is used. When the front axle of the rescued vehicle is an integral axle chassis, an integral axle buffer bracket is used.

[0067] When the front axle suspension structure strength of the rescued vehicle is high and it is convenient to install the suspension limit bracket, the suspension limit bracket is preferably used. When the suspension ground clearance of the rescued vehicle is large and it is convenient to use the tire limit bracket, the tire limit bracket can be used.

[0068] Towing operation: When the rescue vehicle 1 is towing, the towing device 2 is unfolded, the support arm 201 is extended under the front axle of the rescued vehicle 3, and the arm head of the support arm 201 is extended to the appropriate position (the support arm contains a secondary support arm, and the secondary support arm can be extended and retracted to adjust the arm head position). Then, the support arm 201 arm head and the chassis of the rescued vehicle are tied together with rigging, and an independent bridge buffer bracket 4 or an integral bridge buffer bracket 5 is placed between the support arm 201 and the chassis of the rescued vehicle to avoid rigid contact between the support arm 201 and the chassis of the rescued vehicle. Operate the towing device 2 to lift the front axle of the rescued vehicle 3, and according to the suspension structure of the rescued vehicle, install the tire limiting bracket 6 on the support arm 201 and slide the tire limiting bracket 6 to the front of the tire of the front axle of the rescued vehicle, or install the suspension limiting bracket 7 on the support arm 201 and slide the suspension limiting bracket 7 to the front of the suspension of the front axle of the rescued vehicle. Figure 1 As shown, the front traction hook of the rescued vehicle, the front axle suspension of the rescued vehicle and the supporting arm 201 are finally tied together using rigging, so that the supporting device 2 and the chassis of the rescued vehicle are tied together as a whole. After the supporting device 2 is connected, the rescued vehicle can be carried out for supporting and transporting.

[0069] (1) Independent bridge buffer bracket 4

[0070] like Figure 8 As shown, the independent bridge buffer bracket 4 includes a nylon block a401, a sleeve assembly 402, a pin 403 and an R-type clamp 404. The sleeve assembly 402 is mounted on the nylon block a401 by bolts, the pin 403 is inserted into the sleeve assembly 402 and fixed by the R-type clamp 404, a set of holes is designed on the sleeve assembly 402, and two sets of holes are designed on the pin 403. The R-type clamp 404 is inserted into different pin hole combinations to adjust the pin 403 to a pulled-out state and an inserted state.

[0071] When installing the independent bridge buffer bracket 4, adjust the pin shaft 403 to the pull-out state, buckle the nylon block a401 on the bracket 201 and slide it to the position where the bracket 201 contacts the front axle of the chassis of the rescued vehicle 3. There are several pin holes on the bracket 201. Adjust the pin shaft 403 to the insertion state, so that the pin shaft 403 can be inserted into the pin holes on the bracket 201, and the independent bridge buffer bracket 4 is fixed on the bracket 201. The independent bridge buffer bracket 4 is generally used in two pieces.

[0072] (2) Integral bridge buffer bracket

[0073] like Fig.11As shown, the integral bridge buffer bracket 5 includes a nylon block b501, a shaft 502, a slot bracket 503, a nylon block c504 and a clip 505. The nylon block b501 and the nylon block c504 are placed above the slot bracket 503, and the shaft 502 passes through the nylon block b501, the nylon block c504 and the ear plates on both sides of the slot bracket 503 to fix the nylon block b501 and the nylon block c504 on the slot bracket 503. The nylon block b501 and the nylon block c504 can slide along the shaft 502. There are pin holes on both sides of the shaft 502, and two clips 505 are installed to fix the shaft 502 on the ear plates.

[0074] When installing the integral bridge buffer bracket 5, the groove of the slot bracket 503 is buckled on the bracket arm 201, and it is slid to the position where the bracket arm 201 contacts the front axle of the chassis of the rescued vehicle 3. Then the nylon block b501 or the nylon block c504 is slid along the shaft 502, so that the groove of the nylon block is just stuck on the cross beam of the front axle of the rescued vehicle. The integral bridge buffer bracket 5 is generally used in two pieces.

[0075] (3) Tire limit bracket

[0076] like Fig.14 As shown, the tire limiting bracket 6 includes a square tube 601, a groove body 602, a spring pin 603, a cap 604, a threaded block 605, an oil cup 606, a spring 607, a second shaft 608, a stud 609, a second clip 610 and a pin 611. The square tube 601 is installed in the square groove of the groove body 602 through the pin 611 and the second clip 610. There are three protruding threaded sleeve structures on both sides of the groove body 602, one of which is installed with a spring 607 and a second shaft 608. The threaded block 605 is installed on the threaded sleeve through a threaded structure and presses the spring 607 and the second shaft 608. The cap 604 is installed on the second shaft 608 through the spring pin 603. The cap 604 and the threaded block 605 are in oblique contact in the circumferential direction. The second shaft 608 can be pulled out by rotating the cap 604 through the spring pin 603. After release, the spring 607 will automatically reset (insert) the second shaft 608. As shown Fig.17 As shown, the other two threaded sleeves in the groove 602 are provided with studs 609 , and the tail end of the studs 609 is provided with spring pins 603 , and the studs 609 can be pulled out or inserted by rotating the spring pins 603 .

[0077] When installing the tire limiting bracket 6, screw out the stud 609 and rotate the cap 604 to make the second shaft 608 and the front end of the stud 609 exit the slot 602, then buckle the slot on the support arm 201 and slide it toward the front axle of the chassis of the rescued vehicle 3 until the square tube 601 contacts the tire of the front axle of the rescued vehicle 3. Then release the cap 604, slide the tire limiting bracket 6 slightly, so that the second shaft 608 is automatically inserted into the pin hole of the support arm 201 under the action of the spring 607, and then the spring pin 603 on the stud 609 can be rotated to insert the stud into the pin hole of the support arm 201. The tire limiting bracket 6 is generally used in two pieces, and the two pieces have a symmetrical structure.

[0078] (4) Suspension limit bracket

[0079] like Fig.19 As shown, the square tube 601 on the tire limiting bracket 6 is replaced by a T-shaped frame 701 to obtain the suspension limiting bracket 7 .

[0080] The operation of installing the suspension limit bracket 7 is similar to that of installing the tire limit bracket 6. The stud 609 and the second shaft 608 are withdrawn from the slot 602, and then the slot is buckled and installed on the bracket 201, and slid toward the front axle of the chassis of the rescued vehicle 3 until the T-shaped frame 701 contacts the front axle suspension of the rescued vehicle 3. Then, the second shaft 608 and the stud 609 are inserted into the pin hole of the bracket 201. The T-shaped frame 701 has multiple mounting holes, which can be adjusted to a variety of postures to facilitate blocking the suspension. The suspension limit bracket 7 is generally used in two pieces, and the two pieces have a symmetrical structure.

[0081] The auxiliary bracket of the supporting device provided by the present invention is a set of auxiliary tools used by the rescue vehicle in the supporting condition. The set of auxiliary brackets is installed between the supporting device of the rescue vehicle and the cross beam of the front axle of the rescued vehicle, which can effectively avoid the rigid contact between the supporting device and the rescued vehicle, reduce the impact between the vehicles during the supporting operation, and eliminate the interference between the front axle or chassis of the rescued vehicle and the supporting device. At the same time, it can also play a limiting role to prevent the rescued vehicle from sliding forward and backward or tilting left and right during the supporting operation, avoiding secondary damage to the rescued vehicle. In addition, brackets with different structures are designed for different types of rescued vehicles. The set of auxiliary tools has a reliable structure, simple and convenient operation, and high safety.

[0082] Recovery vehicle: A special vehicle that can repair, tow, and transport faulty vehicles.

[0083] Towing device: A device used by the rescue vehicle to transport and tow the faulty vehicle.

[0084] Towing operation: The rescue vehicle tows the faulty vehicle through the towing device and pulls the faulty vehicle to the designated location.

[0085] The slot bracket 503 is U-shaped in shape, the ear plate is a flat plate, the nylon block a, nylon block b, and nylon block c are block-shaped objects, the threaded block 605 and the stud 609 are cylinders with external threads, the oil cup is a cylinder, and the shaft sleeve assembly, pin shaft, R-type clamp, shaft, clamp, threaded sleeve, spring pin, cap, spring, second shaft, second spring pin, second rotating cap, third shaft, second clamp and pin are of many models that can be used in the prior art. Those skilled in the art can select appropriate models according to actual needs, and this embodiment will not cite examples one by one.

[0086] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An auxiliary bracket for a rescue vehicle supporting device, characterized in that: Includes cushioning bracket; The buffer bracket includes an independent bridge buffer bracket (4). If the front axle of the rescued vehicle (3) is an independent suspension bridge chassis, the independent bridge buffer bracket is used; The independent bridge buffer bracket (4) comprises a nylon block a (401), a plurality of shaft sleeve assemblies (402), a pin (403) and an R-type clamp (404); The lower end of the nylon block a (401) is provided with a support arm groove matching the support arm (201); A plurality of shaft sleeve assemblies (402) are fixedly mounted on the nylon block a (401), and a pin shaft (403) is inserted into the shaft sleeve assembly (402) and fixed by an R-type clamp (404); A plurality of shaft sleeve assembly holes are formed on the shaft sleeve assembly (402), a plurality of pin shaft holes are formed on the pin shaft (403), and an R-shaped card (404) is inserted into different pin shaft holes and shaft sleeve assembly holes to adjust the pin shaft (403) to a pulled-out state or an inserted state, wherein the length of the pin shaft (403) extending out of the shaft sleeve assembly (402) in the pulled-out state is greater than the length of the pin shaft (403) extending out of the shaft sleeve assembly (402) in the inserted state; When installing the independent bridge buffer bracket (4), the pin shaft (403) is adjusted to a pulled-out state, and the support arm groove of the nylon block a (401) is buckled on the support arm (201) and slid to a position where the support arm (201) contacts the front axle of the chassis of the rescued vehicle (3); The pin shaft (403) is adjusted to an insertion state so that the pin shaft (403) is inserted into the support arm pin hole provided on the support arm (201).

2. The auxiliary bracket of the rescue vehicle towing device according to claim 1, characterized in that: It comprises a suspension limit bracket (7), and if the front axle suspension structure strength of the rescued vehicle (3) is higher than a set threshold, the suspension limit bracket (7) is selected.

3. The auxiliary bracket of the rescue vehicle towing device according to claim 2, characterized in that: The suspension limit bracket (7) comprises a T-shaped frame (701) and a trough body (602); a trough body groove matching the support arm (201) is provided at the lower end of the trough body (602); a T-shaped slot matching the T-shaped frame (701) is provided on the trough body (602); and the T-shaped frame (701) is fixedly installed in the T-shaped slot; When installing the tire limiting bracket (6), the groove of the groove body (602) is buckled on the supporting arm (201), and the groove body (602) is slid toward the front axle of the chassis of the rescued vehicle (3) until the T-shaped frame (701) contacts the tire of the front axle of the rescued vehicle (3).

4. An auxiliary bracket for a rescue vehicle supporting device, characterized in that: Includes cushioning bracket; The buffer bracket comprises an integral bridge buffer bracket (5). If the front axle of the rescued vehicle (3) is an integral axle chassis, the integral bridge buffer bracket (5) is used; The integral bridge buffer bracket (5) comprises a plurality of lug plates, a nylon block b (501), a shaft (502), a slot bracket (503) and a nylon block c (504); the plurality of lug plates are fixedly arranged on both sides of the slot bracket (503); a slot bracket groove matching the support arm (201) is provided at the lower end of the slot bracket (503); and a front axle beam groove matching the front axle beam of the rescued vehicle (3) is provided at the upper ends of the nylon block b (501) and the nylon block c (504); The nylon block b (501) and the nylon block c (504) are placed above the slot-shaped bracket (503); the shaft (502) passes through the nylon block b (501), the nylon block c (504) and the lug plates; both ends of the shaft (502) are fixedly connected to the lug plates on both sides of the slot-shaped bracket (503); the nylon block b (501) and the nylon block c (504) slide along the shaft (502); When installing the integral bridge buffer bracket (5), the groove bracket groove of the groove bracket (503) is buckled on the support arm (201), and the groove bracket (503) is slid to the position where the support arm (201) contacts the front axle of the chassis of the rescued vehicle (3); Slide the nylon block b (501) or the nylon block c (504) along the shaft (502) so that the groove of the front axle beam is stuck on the front axle beam of the rescued vehicle (3); The integral bridge buffer bracket (5) comprises a clamp (505), and shaft pin holes are provided on both sides of the shaft (502). The clamp (505) passes through the shaft pin holes to fix the shaft (502) on the support ear plate.

5. The auxiliary bracket of the rescue vehicle towing device according to claim 4, characterized in that: It includes a tire limiting bracket (6), and if the suspension ground clearance of the rescued vehicle (3) is greater than a set threshold, the tire limiting bracket (6) is selected; The tire limiting bracket (6) comprises a square tube (601) and a trough body (602); a trough body groove matching the supporting arm (201) is provided at the lower end of the trough body (602); a square groove matching the square tube (601) is provided on the trough body (602); and the square tube (601) is fixedly installed in the square groove; When installing the tire limiting bracket (6), the groove of the groove body (602) is buckled on the supporting arm (201), and the groove body (602) is slid toward the front axle of the chassis of the rescued vehicle (3) until the square tube (601) contacts the tire of the front axle of the rescued vehicle (3).

6. The auxiliary bracket of the rescue vehicle towing device according to claim 5, characterized in that: The tire limiting bracket (6) further comprises a threaded sleeve, a spring pin (603), a cap (604), a threaded block (605), a spring (607) and a second shaft (608); The threaded sleeve is fixedly arranged on the groove body (602), the threaded block (605) is screwedly connected to the threaded sleeve, and the threaded block (605) presses the spring (607) and the second shaft (608) into the threaded sleeve; The diameter of the middle end of the second shaft (608) is larger than the diameters of the two ends of the second shaft (608), and one end of the second shaft (608) passes through and extends into the slot body (602); The cap (604) is fixedly mounted on the second shaft (608) via a spring pin (603), and the cap (604) and the threaded block (605) are in inclined contact in the circumferential direction; The second shaft (608) is pulled out by rotating the cap (604) through the spring pin (603), and the spring (607) automatically resets the second shaft (608) after the release.

7. The auxiliary bracket of the rescue vehicle towing device according to claim 6, characterized in that: The tire limiting bracket (6) further comprises a second spring pin, a second rotating cap, a third shaft, an oil cup (606) and a stud (609); The oil cup (606) is fixedly mounted on the tank body (602), the second rotating cap is screwed to the threaded sleeve, the oil cup (606) is mounted on the threaded sleeve, and one end of the third shaft passes through and extends into the tank body (602); A second spring pin is installed at the rear end of the stud (609), and the second spring pin rotates to drive the stud (609) to be pulled out of or inserted into the threaded sleeve; When installing the tire limiting bracket (6), the stud (609) is screwed out, and the second rotating cap is rotated so that the third shaft and the front end of the stud (609) are both withdrawn from the groove body (602), and then the groove body (602) is buckled on the support arm (201) and slid toward the front axle of the chassis of the rescued vehicle (3) until the square tube (601) contacts the tire of the front axle of the rescued vehicle (3); then the cap (604) and the second rotating cap are released, and the tire limiting bracket (6) is slid so that the third shaft is automatically inserted into the support arm pin hole of the support arm (201) under the action of the spring (607), and at this time, the second spring pin on the stud (609) is rotated to insert the stud (609) into the support arm pin hole of the support arm (201).

8. The auxiliary bracket of the rescue vehicle towing device according to claim 7, characterized in that: The tire limiting bracket (6) comprises a second clip (610) and a pin (611); the square tube (601) is fixedly mounted in the square groove of the groove body (602) via the pin (611) and the second clip (610).

Images