Supporting point supporting and buffering mechanism of rescue trailer

Abstract

The invention provides a rescue trailer supporting point supporting and buffering mechanism which comprises a fixing frame which can be fixedly mounted on a supporting arm, so that the stability is ensured. The first elastic carrying assembly arranged in the fixing frame can support the steering wheel of the rescued vehicle through the first lifting part and fix the steering wheel of the rescued vehicle. Through the elastic buffering effect of the first elastic supporting assembly, the impact on the binding belt due to vibration or inertia force can be effectively reduced, then the service life of the binding belt can be prolonged, meanwhile, the safety of the trailer process can be guaranteed, and practicability is high. According to the supporting point supporting and buffering mechanism of the rescue trailer, impact on a binding belt due to vibration or inertia force can be effectively reduced, then the service life of the binding belt can be prolonged, meanwhile, safety of the trailer process can be guaranteed, and practicability is high.

Description

Technical Field

[0001] The invention belongs to the technical field of rescue trailers, and in particular relates to a rescue trailer support point support buffer mechanism. Background Art

[0002] When a vehicle cannot drive normally due to a breakdown or accident, a rescue trailer is usually needed to rescue the breakdown or accident vehicle (rescued vehicle). The rescue trailer can tow the rescued vehicle to ensure that the rescued vehicle is towed to the repair site. When it comes to the rescued vehicle with a large size and weight, the rescue trailer cannot lift it completely, and usually lifts the guide wheels at the front end of the rescued vehicle.

[0003] In the prior art, a support arm that can extend outward is usually provided at the rear of a rescue trailer. The rescued vehicle is towed by a winch on the vehicle body until the steering wheel contacts the support arm, and the steering wheel and the support arm are tied together by a special tie strap. However, during the driving of the rescue trailer, there will be bumps, acceleration, and braking, etc., so vibration and inertia will inevitably occur. The tension on the tie strap that ties the steering wheel to the support arm will undoubtedly change continuously. For rescued vehicles with heavier weight, the impact on the tie strap will be greater, which will shorten the service life of the tie strap. In addition, if the road surface is poor, the tie strap will also break. Summary of the invention

[0004] The embodiment of the present invention provides a support point buffer mechanism for a rescue trailer, aiming to solve the problem of poor practicality of the existing rescue trailer due to its inability to resist vibration and the impact of vibration on the binding belt.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a rescue trailer support point support buffer mechanism, comprising: There are two fixing frames, which are arranged on the supporting arm at intervals along the width direction of the supporting arm; each of the fixing frames has a first installation cavity with an open top; There are two first elastic supporting components, and the two first elastic supporting components are arranged in a one-to-one correspondence with the two fixing frames; each of the first elastic supporting components is installed in the corresponding first installation cavity, and each of the first elastic supporting components has a first supporting portion extending out of the opening of the corresponding first installation cavity; the first supporting portion is used to support and fix the steering wheel of the rescued vehicle.

[0006] In a possible implementation, the rescue trailer support point support buffer mechanism further includes: There are two slide rails, which are arranged at intervals along the width direction of the support arm and correspond to the two fixed frames one by one; each of the slide rails has a limit sliding cavity arranged along the length direction of the support arm; There are two movable frames, and the two movable frames are respectively slidably arranged in the two limit sliding cavities; each movable frame has a second installation cavity with an open top; There are two second elastic supporting assemblies, and the two second elastic supporting assemblies are arranged in one-to-one correspondence with the two moving frames; each second elastic supporting assembly is installed in the corresponding second installation cavity, and each second elastic supporting assembly has a second supporting portion extending out of the opening of the second installation cavity; the second supporting portion is used to support and fix other steering wheels of the rescued vehicle; The driving structure is fixed on the supporting arm and connected with the two moving frames, and is used for driving each of the moving frames to move along the length direction of the supporting arm.

[0007] In a possible implementation, the driving structure includes: A fixed crossbeam is fixed on the support arm along the width direction of the support arm; A movable crossbeam is arranged along the width direction of the supporting arm, and both ends of the crossbeam are respectively connected to the two movable frames; A plurality of telescopic structures are provided, each of which is arranged at intervals along the width direction of the supporting arm, each of which is fixed on the fixed crossbeam, and the other end of which is connected to the movable crossbeam.

[0008] In a possible implementation manner, the second elastic supporting component has the same structure as the first elastic supporting component.

[0009] In a possible implementation, each of the movable frames is provided with a plurality of movable plates on its outer wall surface facing the fixed frame; each of the movable plates is arranged along the vertical direction, and its top end is flush with the top surface of the movable frame; each of the movable plates is arranged at intervals along the width direction of the bracket, and a plug-in space is formed between any two adjacent movable plates; A plurality of fixing plates are arranged on the outer wall surface of the fixing frame facing the moving frame, each of the fixing plates is arranged along the vertical direction, and the top end is flush with the top surface of the moving frame; each of the fixing plates extends into each of the plug-in spaces.

[0010] In a possible implementation, each of the first elastic supporting components includes: A bearing seat is arranged in the first installation cavity, the top of the bearing seat is the first lifting portion; along the length direction of the supporting arm, the bottom of both sides of the bearing seat are provided with a first inclined portion; A vertical buffer structure, arranged at the bottom of the first mounting cavity and connected to the bearing seat, for buffering the impact from the bearing seat in the vertical direction; There are two transverse buffer structures, which are respectively arranged on both sides of the bearing seat along the length direction of the support arm and correspond to the two first inclined surfaces respectively. The two transverse buffer structures are used to buffer the impact from the bearing seat in the length direction of the support arm.

[0011] In a possible implementation, the vertical buffer structure includes: There are two rotating drums, which are arranged at intervals along the length direction of the supporting arm, and the two rotating drums are rotatably arranged at the bottom of the fixed frame, and the rotation axis is arranged along the width direction of the supporting arm; each rotating drum is provided with a through sliding hole, and the axis of the sliding hole is arranged perpendicular to the rotation axis of the rotating drum; There are two supporting slide bars, and the two supporting slide bars correspond to the two rotating drums one by one respectively; the top end of each supporting slide bar is rotatably connected to the bearing seat, and the rotation direction is set along the width direction of the supporting arm; the bottom end of each supporting slide bar passes through the sliding hole corresponding to the rotating drum and then extends out; There are two fixing nuts, each of which is threadedly connected to the protruding end of each supporting slide rod; Two vertical springs are provided, and each of the vertical springs is respectively sleeved on each of the supporting slide bars; one end of each vertical spring abuts against the bearing seat, and the other end abuts against the corresponding rotating drum.

[0012] In a possible implementation, each of the lateral buffer structures includes: A slider is slidably disposed in the first installation cavity along the length direction of the bracket, and has a second inclined surface adapted to the first inclined surface at one end close to the bearing seat; A plurality of guide posts are provided, each of which is arranged at intervals along the vertical direction, and each of which is arranged along the length direction of the bracket; one end of each guide post is fixedly connected to the slider, and the other end is slidably connected to a guide hole arranged on the side wall of the fixed frame; A plurality of transverse springs are provided, each of which is sleeved on each of the guide pillars, one end of each of the transverse springs abuts against the slider, and the other end abuts against the inner wall surface of the first mounting cavity.

[0013] In a possible implementation, a plurality of rollers that can roll in contact with the first inclined surface are disposed on the second inclined surface at intervals, and a rotation axis of each of the rollers is disposed along the width direction of the support arm.

[0014] In this implementation, the fixing frame can ensure that it is fixedly mounted on the supporting arm, thereby ensuring stability. The first elastic supporting assembly arranged in the fixing frame can support and fix the steering wheel of the rescued vehicle through the first lifting part. The elastic buffering effect of the first elastic supporting assembly can effectively reduce the impact of vibration or inertia force on the binding belt, thereby extending the service life of the binding belt, and at the same time ensuring the safety of the towing process, and having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of the positional relationship between a rescue trailer support arm where a rescue trailer support point support buffer mechanism is located and a rescued vehicle provided in an embodiment of the present invention; Figure 2 A schematic diagram of the top view of the support point buffer mechanism of the rescue trailer provided by an embodiment of the present invention (with a support arm attached); Figure 3 for Figure 2 The enlarged structural diagram of the rescue trailer support point support buffer mechanism at A is shown; Figure 4 for Figure 3 The schematic cross-sectional structure diagram of the rescue trailer support point support buffer mechanism as shown in the BB direction; Description of reference numerals: 10. fixing frame; 11. first installation cavity; 12. fixing plate; 20. First elastic supporting assembly; 21. Bearing seat; 211. First inclined plane; 22. Vertical buffer structure; 221. Rotating drum; 222. Supporting slide bar; 223. Fixing nut; 224. Vertical spring; 23. Transverse buffer structure; 231. Sliding block; 232. Guide column; 233. Transverse spring; 234. Second inclined plane; 235. Roller; 30. Slide rail; 40. Moving frame; 41. Moving plate; 50. A second elastic supporting assembly; 60. Driving structure; 61. Fixed beam; 62. Moving beam; 63. Telescopic structure; 70. Support arm; 80. Rescued vehicles; 90. Rescue trailer. DETAILED DESCRIPTION

[0016] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0017] Please also read Figure 1 and Figure 2 , the support point support buffer mechanism of the rescue trailer 90 provided by the present invention is now described. The support point support buffer mechanism of the rescue trailer 90 includes a fixed frame 10 and a first elastic supporting assembly 20. There are two fixed frames 10, and the two fixed frames 10 are arranged on the support arm 70 at intervals along the width direction of the support arm 70. Each fixed frame 10 has a first installation cavity 11 with an open top. There are two first elastic supporting assemblies 20, and the two first elastic supporting assemblies 20 are arranged in a one-to-one correspondence with the two fixed frames 10. Each first elastic supporting assembly 20 is installed in the corresponding first installation cavity 11, and each first elastic supporting assembly 20 has a first supporting portion extending out of the opening of the corresponding first installation cavity 11. The first supporting portion can support and fix the steering wheel of the rescued vehicle 80.

[0018] Compared with the prior art, the support point support buffer mechanism of the rescue trailer 90 provided in this embodiment can ensure that the fixed frame 10 is fixedly mounted on the support arm 70, thereby ensuring stability. The first elastic supporting assembly 20 arranged in the fixed frame 10 can support and fix the steering wheel of the rescued vehicle 80 through the first lifting part. Through the elastic buffering effect of the first elastic supporting assembly 20, the impact of vibration or inertia force on the binding belt can be effectively reduced, thereby extending the service life of the binding belt, and at the same time, it can also ensure the safety of the towing process, and has strong practicality.

[0019] In this embodiment, for further understanding, the first lifting part can still use a tie belt. After the tie belt is impacted, it is easy to break at the connection point, such as the lock, or the connection between the tie belt and the first lifting part. Therefore, when it comes to towing a heavy vehicle, the tie belt used is also larger, its structure is relatively complex, and the cost is also higher.

[0020] In some embodiments, see Figure 2The support point support buffer mechanism of the rescue trailer 90 also includes a slide rail 30, a moving frame 40, a second elastic supporting assembly 50 and a driving structure 60. There are two slide rails 30, and the two slide rails 30 are arranged at intervals along the width direction of the supporting arm 70, and correspond one to one with the two fixed frames 10. Each slide rail 30 has a limiting sliding cavity arranged along the length direction of the supporting arm 70. There are two moving frames 40, and the two moving frames 40 are respectively slidably arranged in the two limiting sliding cavities. Each moving frame 40 has a second installation cavity with an open top. There are two second elastic supporting assemblies 50, and the two second elastic supporting assemblies 50 are arranged one to one with the two moving frames 40. Each second elastic supporting assembly 50 is installed in the corresponding second installation cavity, and each second elastic supporting assembly 50 has a second lifting portion extending out of the opening of the second installation cavity. The second lifting portion can support and fix the other steering wheels of the rescued vehicle 80. The driving structure 60 is fixed on the supporting arm 70 and connected to the two moving frames 40 , and can drive each moving frame 40 to move along the length direction of the supporting arm 70 .

[0021] In the case of a rescued vehicle 80 with a larger weight (tonnage), four steering wheels are usually provided, two at the front and two at the rear. Therefore, the movable frame 40 and the second elastic supporting assembly 50 can ensure the lifting and fixing of the other two steering wheels, and then support and fix the four steering wheels together with the fixed frame 10 and the first elastic supporting assembly 20. In the case of different rescued vehicles 80 having different wheelbases of the front and rear steering wheels, the driving structure 60 can be used to drive the two movable frames 40 to slide in the two limited sliding cavities, and then adjust the distance between the movable frame 40 and the fixed frame 10 to ensure the adaptation to different wheelbases.

[0022] In addition, the elastic buffering effect of the second elastic supporting assembly 50 can effectively reduce the impact of vibration or inertia on the binding belt, thereby extending the service life of the binding belt, while also ensuring the safety of the towing process and strong practicality.

[0023] In this embodiment, each guide rail can secure two vertical plates arranged at intervals, and the top end of each vertical plate has a folded edge arranged toward the other vertical plate. The two vertical plates and the supporting arm 70 are enclosed to form a limiting sliding cavity.

[0024] In some embodiments, the driving structure 60 may be configured as follows: Figure 2 See the structure shown. Figure 2The driving structure 60 includes a fixed beam 61, a movable beam 62 and a telescopic structure 63. The fixed beam 61 is fixed on the supporting arm 70 along the width direction of the supporting arm 70. The movable beam 62 is arranged along the width direction of the supporting arm 70, and its two ends are respectively connected to the two moving frames 40. There are multiple telescopic structures 63, each of which is arranged at intervals along the width direction of the supporting arm 70, and each of the telescopic structures 63 is fixed on the fixed beam 61, and the other end is connected to the movable beam 62.

[0025] The telescopic structure 63 drives the movable crossbeam 62 to move, thereby ensuring the movement of the two movable frames 40, and further ensuring the adaptation to the change of the wheelbase of different rescued vehicles 80. The telescopic structure 63 can be a hydraulic cylinder.

[0026] In some embodiments, the second elastic supporting assembly 50 and the first elastic supporting assembly 20 may be configured as follows: Figure 2 See the structure shown. Figure 2 The second elastic supporting component 50 has the same structure as the first elastic supporting component 20, and can be easily manufactured.

[0027] It should be noted that the structures of the fixed frame 10 and the movable frame 40 can also be set to be the same, and the size of the sliding cavity can be adaptively set according to the structure of the movable frame 40. Figure 4 , the first installation cavity 11 and the second installation cavity are the same.

[0028] In some embodiments, the moving frame 40 may be configured as follows: Figures 2 to 3 See the structure shown. Figures 2 to 3 , each movable frame 40 is provided with a plurality of movable plates 41 on the outer wall surface facing the fixed frame 10. Each movable plate 41 is arranged along the vertical direction, and the top end is flush with the top surface of the movable frame 40. Each movable plate 41 is arranged at intervals along the width direction of the bracket 70, and a plug-in space is formed between any two adjacent movable plates 41.

[0029] A plurality of fixing plates 12 are disposed on the outer wall of the fixing frame 10 facing the moving frame 40. Each fixing plate 12 is disposed along the vertical direction, and the top end is flush with the top surface of the moving frame 40. Each fixing plate 12 extends into each insertion space one by one.

[0030] When the fixed frame 10 and the movable frame 40 are installed, the supporting arm 70 will protrude and a depression will be formed between the two. The movable plate 41 and the fixed plate 12 are staggered to ensure compensation for the depression between the two, thereby ensuring that the rescued vehicle 80 moves smoothly to the one-to-one correspondence between each steering wheel and each first lifting part and each second lifting part.

[0031] In some embodiments, the first elastic supporting component 20 may be configured as follows: Figure 2 See the structure shown. Figure 2 Each first elastic supporting assembly 20 includes a bearing seat 21, a vertical buffer structure 22 and a transverse buffer structure 23. The bearing seat 21 is arranged in the first installation cavity 11, and the top of the bearing seat 21 is a first lifting portion. Along the length direction of the support arm 70, first inclined surfaces 211 are provided at the bottom of both sides of the bearing seat 21. The vertical buffer structure 22 is arranged at the bottom of the first installation cavity 11 and is connected to the bearing seat 21, and can buffer the impact from the bearing seat 21 in the vertical direction. There are two transverse buffer structures 23, and the two transverse buffer structures 23 are respectively arranged on both sides of the bearing seat 21 along the length direction of the support arm 70, and respectively correspond to the two first inclined surfaces 211, and the two transverse buffer structures 23 can buffer the impact from the bearing seat 21 in the length direction of the support arm 70.

[0032] The bearing seat 21 can resist the pressure change and vibration from the vertical direction under the support of the vertical buffer structure 22. The first inclined surfaces 211 arranged at both ends of the bearing seat 21 correspond to the transverse buffer structures 23 respectively, and can resist the pressure change and vibration from the length direction of the supporting arm 70 under the support of the two transverse buffer structures 23. Moreover, this structure can ensure that sufficient elastic support is arranged in a limited space, has a large bearing capacity, and can adapt to large-tonnage rescued vehicles 80.

[0033] After the steering wheel of the rescued vehicle 80 moves onto the bearing seat 21, the bearing seat 21 will be subjected to pressure and move downward to a certain extent, at which time part of the pressure will be transmitted to the vertical buffer structure 22, and the other part of the pressure will be transmitted to the two transverse buffer structures 23 through the first inclined surface 211. When pressure changes and vibrations occur, the vertical buffer structure and the transverse buffer structure 23 work simultaneously, which will reduce the vibration force, thereby weakening the impact force of the steering wheel of the rescued vehicle 80 on the lashing belt, which is safer and can also ensure the protection of the lashing belt.

[0034] In some embodiments, the vertical buffer structure 22 may be configured as follows: Figure 4 See the structure shown. Figure 4 The vertical buffer structure 22 includes a rotating drum 221 , a supporting sliding rod 222 , a fixing nut 223 and a vertical spring 224 .

[0035] There are two rotating cylinders 221, which are arranged at intervals along the length direction of the supporting arm 70. Both rotating cylinders 221 are rotatably arranged at the bottom of the fixed frame 10, and the rotation axis is arranged along the width direction of the supporting arm 70. Each rotating cylinder 221 is provided with a through sliding hole, and the axis of the sliding hole is arranged perpendicular to the rotation axis of the rotating cylinder 221. There are two supporting slide bars 222, which correspond to the two rotating cylinders 221 one by one. The top end of each supporting slide bar 222 is rotatably connected to the bearing seat 21, and the rotation direction is arranged along the width direction of the supporting arm 70. The bottom end of each supporting slide bar 222 extends out after passing through the sliding hole of the corresponding rotating cylinder 221. There are two fixing nuts 223, and each fixing nut 223 is threadedly connected to the protruding end of each supporting slide bar 222. There are two vertical springs 224, and each vertical spring 224 is sleeved on each supporting slide bar 222. One end of each vertical spring 224 abuts against the bearing seat 21 , and the other end abuts against the corresponding rotating drum 221 .

[0036] First, the bottom end of each support slide bar 222 is connected to a fixing nut 223, which can prevent the support slide bar 222 from being separated from the slide hole, thereby ensuring that the height of the top end surface of the bearing seat 21 can be adjusted. Each vertical spring 224 can support the bearing seat 21 vertically and provide elastic force at the same time to resist pressure and vibration and ensure the buffering effect. The movement of the rescue trailer 90 involves acceleration and deceleration. At this time, the running wheels will give the bearing part a component force in the direction of travel or in the opposite direction. The two rotating drums 221, the two support slide bars 222 and the bearing seat 21 will form a deformable four-link support structure. This structure can ensure that the bearing seat 21 can have the function of pitching and flipping, thereby effectively buffering the component forces in the front and rear directions, and its buffering effect is enhanced.

[0037] The bearing seat 21 has a certain width. When the width is large, the number of rotating drums 221 and supporting slide rods 222 can be increased in the width direction of the support arm 70, and a corresponding number of vertical springs 224 and fixing nuts 223 can be set to further increase the supporting force to adapt to the rescue of large-tonnage vehicles.

[0038] The bottom end of the fixed frame 10 needs to be provided with a notch, and a connecting portion for the rotating drum 221 to be rotatably connected is provided. In addition, a rotating hole for the supporting slide rod 222 to be rotatably connected needs to be provided at the bottom end of the bearing seat 21. These two structural parts are adaptive settings of those skilled in the art, and will not be repeated here.

[0039] In some embodiments, the lateral buffer structure 23 may be formed as follows: Figure 4 See the structure shown. Figure 4Each transverse buffer structure 23 includes a slider 231, a guide column 232 and a transverse spring 233. The slider 231 is slidably disposed in the first mounting cavity 11 along the length direction of the support arm 70, and has a second inclined surface 234 adapted to the first inclined surface 211 at one end close to the bearing seat 21. There are a plurality of guide columns 232, each of which is arranged at intervals along the vertical direction, and each of which is arranged along the length direction of the support arm 70. One end of each guide column 232 is fixedly connected to the slider 231, and the other end is slidably connected to a guide hole provided on the side wall of the fixed frame 10. There are a plurality of transverse springs 233, each of which is respectively sleeved on each guide column 232, one end of each transverse spring 233 abuts against the slider 231, and the other end abuts against the inner wall surface of the first mounting cavity 11.

[0040] A second inclined surface 234 is provided at one end of the slider 231, which can be matched with the first inclined surface 211, thereby ensuring that the pressure of the bearing seat 21 is converted into a thrust in the length direction of the bracket 70. This structure can ensure the supporting effect of the given bearing seat 21 in the length direction of the bracket 70. In addition, the guide column 232 can ensure the guidance of the slider 231, and the transverse spring 233 can ensure that the slider 231 has a tendency to continue to move toward the bearing seat 21, thereby ensuring that the first inclined surface 211 continues to adapt to the second inclined surface 234, thereby ensuring that the bearing seat 21 has a large reverse support force and has a good buffering effect.

[0041] In some embodiments, the slider 231 may be configured as follows: Figure 4 See the structure shown. Figure 4 A plurality of rollers 235 that can roll in contact with the first inclined surface 211 are arranged at intervals on the second inclined surface 234, and the rollers 235 are arranged at intervals along the extension direction of the second inclined surface 234, and the rotation axis of each roller 235 is arranged along the width direction of the bracket 70. Each roller 235 can ensure that the first inclined surface 211 and the second inclined surface 234 are in rolling contact, thereby reducing friction between the two and reducing wear.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The rescue trailer support point support buffer mechanism is characterized by: include: There are two fixing frames, which are arranged on the supporting arm at intervals along the width direction of the supporting arm; each of the fixing frames has a first installation cavity with an open top; There are two first elastic supporting components, and the two first elastic supporting components are arranged in a one-to-one correspondence with the two fixing frames; each of the first elastic supporting components is installed in the corresponding first installation cavity, and each of the first elastic supporting components has a first supporting portion extending out of the opening of the corresponding first installation cavity; the first supporting portion is used to support and fix the steering wheel of the rescued vehicle.

2. The rescue trailer support point support buffer mechanism according to claim 1, characterized in that: The rescue trailer support point support buffer mechanism also includes: There are two slide rails, which are arranged at intervals along the width direction of the support arm and correspond to the two fixed frames one by one; each of the slide rails has a limit sliding cavity arranged along the length direction of the support arm; There are two movable frames, and the two movable frames are respectively slidably arranged in the two limit sliding cavities; each movable frame has a second installation cavity with an open top; There are two second elastic supporting assemblies, and the two second elastic supporting assemblies are arranged in one-to-one correspondence with the two moving frames; each second elastic supporting assembly is installed in the corresponding second installation cavity, and each second elastic supporting assembly has a second supporting portion extending out of the opening of the second installation cavity; the second supporting portion is used to support and fix other steering wheels of the rescued vehicle; The driving structure is fixed on the supporting arm and connected with the two moving frames, and is used for driving each of the moving frames to move along the length direction of the supporting arm.

3. The rescue trailer support point support buffer mechanism according to claim 2, characterized in that: The driving structure comprises: A fixed crossbeam is fixed on the support arm along the width direction of the support arm; A movable crossbeam is arranged along the width direction of the supporting arm, and both ends of the crossbeam are respectively connected to the two movable frames; A plurality of telescopic structures are provided, each of which is arranged at intervals along the width direction of the supporting arm, each of which is fixed on the fixed crossbeam, and the other end of which is connected to the movable crossbeam.

4. The rescue trailer support point support buffer mechanism according to claim 2, characterized in that: The second elastic supporting assembly has the same structure as the first elastic supporting assembly.

5. The rescue trailer support point support buffer mechanism according to claim 2, characterized in that: A plurality of movable plates are arranged on the outer wall surface of each movable frame facing the fixed frame; each movable plate is arranged along the vertical direction, and the top end is flush with the top surface of the movable frame; each movable plate is arranged at intervals along the width direction of the bracket, and a plug-in space is formed between any two adjacent movable plates; A plurality of fixing plates are arranged on the outer wall surface of the fixing frame facing the moving frame, each of the fixing plates is arranged along the vertical direction, and the top end is flush with the top surface of the moving frame; each of the fixing plates extends into each of the plug-in spaces.

6. The rescue trailer support point support buffer mechanism according to any one of claims 1 to 5, characterized in that: Each of the first elastic supporting components comprises: A bearing seat is arranged in the first installation cavity, the top of the bearing seat is the first lifting portion; along the length direction of the supporting arm, the bottom of both sides of the bearing seat are provided with a first inclined portion; A vertical buffer structure, disposed at the bottom of the first mounting cavity and connected to the bearing seat, for buffering the impact from the bearing seat in the vertical direction; There are two transverse buffer structures, which are respectively arranged on both sides of the bearing seat along the length direction of the support arm and correspond to the two first inclined surfaces respectively. The two transverse buffer structures are used to buffer the impact from the bearing seat in the length direction of the support arm.

7. The rescue trailer support point support buffer mechanism according to claim 6, characterized in that: The vertical buffer structure comprises: There are two rotating drums, which are arranged at intervals along the length direction of the supporting arm, and the two rotating drums are rotatably arranged at the bottom of the fixed frame, and the rotation axis is arranged along the width direction of the supporting arm; each rotating drum is provided with a through sliding hole, and the axis of the sliding hole is arranged perpendicular to the rotation axis of the rotating drum; There are two supporting slide bars, and the two supporting slide bars correspond to the two rotating drums one by one respectively; the top end of each supporting slide bar is rotatably connected to the bearing seat, and the rotation direction is set along the width direction of the supporting arm; the bottom end of each supporting slide bar passes through the sliding hole corresponding to the rotating drum and then extends out; There are two fixing nuts, each of which is threadedly connected to the protruding end of each supporting slide rod; Two vertical springs are provided, and each of the vertical springs is respectively sleeved on each of the supporting slide bars; one end of each vertical spring abuts against the bearing seat, and the other end abuts against the corresponding rotating drum.

8. The rescue trailer support point support buffer mechanism according to claim 6, characterized in that: Each of the lateral buffer structures comprises: A slider is slidably disposed in the first installation cavity along the length direction of the bracket, and has a second inclined surface adapted to the first inclined surface at one end close to the bearing seat; A plurality of guide posts are provided, each of which is arranged at intervals along the vertical direction, and each of which is arranged along the length direction of the bracket; one end of each guide post is fixedly connected to the slider, and the other end is slidably connected to a guide hole arranged on the side wall of the fixed frame; A plurality of transverse springs are provided, each of which is sleeved on each of the guide pillars, one end of each of the transverse springs abuts against the slider, and the other end abuts against the inner wall surface of the first mounting cavity.

9. The rescue trailer support point support buffer mechanism according to claim 8, characterized in that: A plurality of rollers that can roll in contact with the first inclined surface are arranged at intervals on the second inclined surface, and a rotation axis of each roller is arranged along the width direction of the supporting arm.

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