Multi-section cylinder buffering device for vehicle

Abstract

A multi-section cylinder buffering device for a vehicle is fixed to the rear end of the vehicle and comprises a lower connecting plate hinged to the rear end of the vehicle and a plurality of hydraulic cylinders hinged to the rear end of the vehicle side by side, telescopic rods of the hydraulic cylinders drive the lower connecting plate to rotate, and the lower connecting plate is connected with an upper connecting plate through at least two multi-section cylinder assemblies. The working state of the buffering device is adjusted through the multiple hydraulic cylinder bodies, and meanwhile impact force is buffered through the hydraulic assembly.

Description

Technical Field

[0001] The utility model relates to the field of vehicle buffering, in particular to a vehicle multi-section cylinder buffering device. Background Art

[0002] At present, maintenance vehicles or road construction vehicles on the market are often parked on the road. Although maintenance vehicles or road construction vehicles turn on double flashes and place warning signs during construction or emergency repairs, some drivers still collide with emergency repair vehicles due to their fatigue or lack of concentration. Existing maintenance vehicles or road construction vehicles are equipped with a buffer device at the rear of the vehicle body to buffer the impact force caused by vehicle collision. However, the existing buffer devices are disposable and cannot be reused after local repairs or secondary repairs, resulting in high maintenance costs and labor-intensive replacement. At the same time, the buffer device may accidentally injure maintenance personnel during maintenance, resulting in secondary injuries. Utility Model Content

[0003] In order to solve the above technical problems, the utility model proposes a multi-section cylinder buffer device for a vehicle, which is fixed to the rear end of the vehicle, and includes: a lower connecting plate and multiple hydraulic cylinders are hinged at the rear end of the vehicle, the telescopic rods of the hydraulic cylinders are hinged to the lower connecting plate, the hydraulic cylinders drive the lower connecting plate to rotate around the hinge point, and the lower connecting plate is connected to an upper connecting plate through at least two hydraulic components. The working state of the buffer device is adjusted by multiple hydraulic cylinder bodies, and the impact force is buffered by the hydraulic components.

[0004] Preferably, the hydraulic assembly includes: a first multi-section cylinder and a second multi-section cylinder, the bottoms of the two multi-section cylinders are fixedly connected to the connecting plate, the telescopic rod of the first multi-section cylinder is hinged to the upper connecting plate, the bottom of the upper connecting plate is provided with a slide groove, and the telescopic rod of the second multi-section cylinder is provided with a roller that cooperates with the slide groove. By providing the slide groove at the bottom of the upper connecting plate and the roller provided on the telescopic rod of the second multi-section cylinder, the upper connecting plate can be effectively tilted locally when an impact force occurs locally, thereby unloading the impact force.

[0005] Preferably, the hydraulic assembly includes: a third multi-section cylinder and two fourth multi-section cylinders; the telescopic rods of the third multi-section cylinder and the fourth multi-section cylinder are both hinged to the upper connecting plate, and the bottom of the third multi-section cylinder is fixedly connected to the lower connecting plate; the bottom of the fourth multi-section cylinder is hinged to the lower connecting plate.

[0006] Preferably, the multi-section cylinders are all connected to one end of a valve group through a first high-pressure air pipe, and the other end of the valve group is connected to a gas tank.

[0007] Preferably, the valve group includes: two one-way valves and a stop valve arranged in parallel in the middle of the high-pressure gas pipe.

[0008] Preferably, the upper connecting plate is detachably connected to a buffer bag.

[0009] The utility model has the following advantages:

[0010] 1. The working state of the buffer device is adjusted through multiple hydraulic cylinders, and the impact force is buffered by hydraulic components.

[0011] 2. By arranging a slide groove at the bottom of the upper connecting plate and arranging a roller on the telescopic rod of the second multi-section cylinder, the upper connecting plate can be effectively tilted locally when an impact force occurs locally, thereby unloading the impact force.

[0012] 3. The valve group can effectively reduce the potential safety hazards during the maintenance process, drive the gas in the gas tank to slowly enter the multi-section cylinder, reduce the phenomenon of rapid reset during maintenance of the multi-section cylinder, and reduce the potential safety hazards during the maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0014] Figure 1 This is a schematic diagram of the overall structure of the multi-section cylinder buffer device for a vehicle in Example 1 of the utility model;

[0015] Figure 2 The overall structure of the multi-section cylinder buffer device for vehicles in Example 1 of the utility model is shown in FIG. Figure 2 ;

[0016] Figure 3 The schematic diagram of the partial structure of the multi-section cylinder buffer device for vehicles in the first embodiment of the utility model is as follows: Figure 1 ;

[0017] Figure 4 The schematic diagram of the partial structure of the multi-section cylinder buffer device for vehicles in the first embodiment of the utility model is as follows: Figure 2 ;

[0018] Figure 5 The schematic diagram of the partial structure of the multi-section cylinder buffer device for vehicles in the first embodiment of the utility model is as follows: Figure 3 ;

[0019] Figure 6 The schematic diagram of the partial structure of the multi-section cylinder buffer device for vehicles in the first embodiment of the utility model is as follows: Figure 4 ;

[0020] Figure 7 The schematic diagram of the partial structure of the multi-section cylinder buffer device for vehicles in the first embodiment of the utility model is as follows: Figure 5 ;

[0021] Figure 8 This is a schematic diagram of the overall structure of a multi-section cylinder buffer device for a vehicle in Embodiment 2 of the utility model;

[0022] Fig. 9 The schematic diagram of the partial structure of the multi-section cylinder buffer device for vehicles in the second embodiment of the utility model is as follows: Figure 1 ;

[0023] Fig.10 The schematic diagram of the partial structure of the multi-section cylinder buffer device for vehicles in the second embodiment of the utility model is as follows: Figure 2 ;

[0024] Fig.11 The schematic diagram of the partial structure of the multi-section cylinder buffer device for vehicles in the second embodiment of the utility model is as follows: Figure 3 ;

[0025] Fig.12 This is a schematic diagram of the overall structure of the vehicle multi-section cylinder buffer device in Example 2 of the utility model without using a valve group and a gas tank.

[0026] In the figure: 1, vehicle 2, lower connecting plate 3, hydraulic cylinder 4, upper connecting plate 5, first multi-section cylinder 6, second multi-section cylinder 8, slide 9, roller 10, third multi-section cylinder 11, fourth multi-section cylinder 12, gas tank 13, one-way valve 14, stop valve 15, buffer bag. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] The present invention is further described in detail below in conjunction with embodiments and specific implementation methods.

[0029] Embodiment 1:

[0030] like Figures 1 to 7 As shown, a multi-section cylinder buffer device for a vehicle is fixed to the rear end of the vehicle 1, including: a lower connecting plate 2 is hinged at the rear end of the vehicle 1, and a plurality of hydraulic cylinders 3 are hinged side by side at the rear end of the vehicle 1, and the telescopic rods of the hydraulic cylinders 3 are hinged to the lower connecting plate 2, and the telescopic rods of the hydraulic cylinders 3 drive the lower connecting plate 2 to rotate around the hinge point. Generally, during the transportation of the vehicle 1, the telescopic rods of the hydraulic cylinders 3 drive the lower connecting plate 2 to rotate around the hinge point to be perpendicular to the horizontal plane. When the vehicle 1 is in working state, the hydraulic cylinders 3 drive the lower connecting plate 2 to rotate around the hinge point to be parallel to the horizontal plane.

[0031] The lower connecting plate 2 is connected to an upper connecting plate 4 via at least two hydraulic components. The upper connecting plate 4 is detachably connected to a buffer bag 15 via screws. The buffer bag 15 is made of porous polyurethane, porous hard rubber or hard cotton.

[0032] The hydraulic assembly includes: a first multi-section cylinder 5 and a second multi-section cylinder 6. The bottoms of the two multi-section cylinders are fixedly connected to the lower connecting plate 2. The telescopic rod of the first multi-section cylinder 5 is hinged to the upper connecting plate 4. A slide groove 8 is provided at the bottom of the upper connecting plate 4. The telescopic rod of the second multi-section cylinder 6 is provided with a roller 9 that cooperates with the slide groove 8.

[0033] The slide groove 8 adopts: a slideway fixed at the bottom of the upper connecting plate 4 and a rib plate for supporting sliding, the slideway adopts a U-shaped groove, and the roller 9 moves along the length direction of the slide groove 8.

[0034] The above may also adopt a first multi-section cylinder 5 and a second multi-section cylinder 6 .

[0035] The first multi-section cylinder 5 and the second multi-section cylinder 6 are both connected to one end of a valve group through a first high-pressure gas pipe, and the other end of the valve group is connected to a gas tank 12. The valve group includes: two one-way valves 13 and a stop valve 14 arranged in parallel in the middle of the high-pressure gas pipe.

[0036] The one-way valve 13 is mainly used to automatically open when the multi-section cylinder releases pressure when an impact force occurs, and to prohibit the gas in the gas tank 12 from entering the multi-section cylinder when the impact stops.

[0037] The stop valve 14 is mainly used to drive the gas in the gas tank 12 to slowly enter the multi-section cylinder during maintenance, thereby reducing the phenomenon of rapid resetting of the multi-section cylinder during maintenance and reducing safety hazards during maintenance.

[0038] During operation, the hydraulic cylinder 3 drives the lower connecting plate 2 to rotate around the hinge point to be parallel to the horizontal plane. When a vehicle collides, the buffer bag 15 performs initial buffering, and the multi-section cylinder buffers the impact force at the same time. Since the multi-section cylinder can perform multi-layer buffering on the impact force, when the multi-section cylinder buffers, it drives the high-pressure gas in the cylinder body to enter the gas tank 12 from the one-way valve 13.

[0039] At the same time, since the telescopic rod of the first multi-section cylinder 5 is hinged to the upper connecting plate 4, the telescopic rod of the second multi-section cylinder 6 moves along the length direction of the slide groove 8 through the roller 9. When an impact force occurs locally, the upper connecting plate 4 will be locally tilted to unload the impact force.

[0040] Embodiment 2:

[0041] like Figures 8 to 12 As shown, a multi-section cylinder buffer device for a vehicle 1 is fixed to the rear end of the vehicle 1, comprising: a lower connecting plate 2 is hinged at the rear end of the vehicle 1, a plurality of hydraulic cylinders 3 are hinged side by side at the rear end of the vehicle 1, the telescopic rods of the hydraulic cylinders 3 are hinged to the lower connecting plate 2, the telescopic rods of the hydraulic cylinders 3 drive the lower connecting plate 2 to rotate around the hinge point, generally during the transportation of the vehicle 1, the telescopic rods of the hydraulic cylinders 3 drive the lower connecting plate 2 to rotate around the hinge point to be perpendicular to the horizontal plane, and when the vehicle 1 is in working state, the hydraulic cylinders 3 drive the lower connecting plate 2 to rotate around the hinge point to be parallel to the horizontal plane.

[0042] The lower connecting plate 2 is connected to an upper connecting plate 4 via at least two hydraulic components. The upper connecting plate 4 is detachably connected to a buffer bag 15 via screws. The buffer bag 15 is made of porous polyurethane, porous hard rubber or hard cotton.

[0043] The hydraulic assembly includes: a third multi-section cylinder 10 and two fourth multi-section cylinders 11; the telescopic rods of the third multi-section cylinder 10 and the fourth multi-section cylinder 11 are hinged to the upper connecting plate 4, and the bottom of the third multi-section cylinder 10 is fixedly connected to the lower connecting plate 2; the bottom of the fourth multi-section cylinder 11 is hinged to the lower connecting plate 2.

[0044] The second multi-section cylinder 6 and the third multi-section cylinder 10 are both connected to one end of a valve group through a first high-pressure gas pipe, and the other end of the valve group is connected to a gas tank 12.

[0045] The valve group includes: two one-way valves 13 and a stop valve 14 which are arranged in parallel in the middle of the high-pressure gas pipe.

[0046] The one-way valve 13 is mainly used to automatically open when the multi-section cylinder releases pressure when an impact force occurs, and to prohibit the gas in the gas tank 12 from entering the multi-section cylinder when the impact stops.

[0047] The stop valve 14 is mainly used to drive the gas in the gas tank 12 to slowly enter the multi-section cylinder during maintenance, thereby reducing the phenomenon of rapid resetting of the multi-section cylinder during maintenance and reducing safety hazards during maintenance.

[0048] This embodiment can also be Fig.12 As shown, the combination of the valve group and the gas tank 12 is not used.

[0049] During operation, the hydraulic cylinder 3 drives the lower connecting plate 2 to rotate around the hinge point to be parallel to the horizontal plane. When a vehicle collides, the buffer bag 15 performs initial buffering, and the multi-section cylinder buffers the impact force at the same time. Since the multi-section cylinder can perform multi-layer buffering on the impact force, when the multi-section cylinder buffers, it drives the high-pressure gas in the cylinder body to enter the gas tank 12 from the one-way valve 13.

[0050] At the same time, since the telescopic rods of the third multi-section cylinder 10 and the fourth multi-section cylinder 11 are hinged to the upper connecting plate 4, and the bottom of the fourth multi-section cylinder 11 is hinged to the lower connecting plate 2, when an impact force occurs locally, the upper connecting plate 4 will be locally tilted to unload the impact force.

[0051] Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

Claims

1. A multi-section cylinder buffer device for a vehicle, fixed to the rear end of the vehicle, comprising: A lower connecting plate and a plurality of hydraulic cylinders are hinged at the rear end of the vehicle, the telescopic rods of the hydraulic cylinders are hinged to the lower connecting plate, and the hydraulic cylinders drive the lower connecting plate to rotate around the hinge point. The vehicle is characterized in that the lower connecting plate is connected to an upper connecting plate via at least two hydraulic components.

2. The vehicle multi-section cylinder buffer device according to claim 1, characterized in that: The hydraulic assembly includes: a first multi-section cylinder and a second multi-section cylinder, the bottoms of the two multi-section cylinders are fixedly connected to the lower connecting plate, the telescopic rod of the first multi-section cylinder is hinged to the upper connecting plate, a slide groove is provided at the bottom of the upper connecting plate, and the telescopic rod of the second multi-section cylinder is provided with a roller that cooperates with the slide groove.

3. The vehicle multi-section cylinder buffer device according to claim 1, characterized in that: The hydraulic assembly includes: a third multi-section cylinder and two fourth multi-section cylinders; the telescopic rods of the third multi-section cylinder and the fourth multi-section cylinder are both hinged to the upper connecting plate, the bottom of the third multi-section cylinder is fixedly connected to the lower connecting plate; the bottom of the fourth multi-section cylinder is hinged to the lower connecting plate.

4. The vehicle multi-section cylinder buffer device according to claim 2 or 3, characterized in that: The multi-section cylinders are all connected to one end of a valve group through a first high-pressure air pipe, and the other end of the valve group is connected to a gas tank.

5. The vehicle multi-section cylinder buffer device according to claim 4, characterized in that: The valve group comprises: two one-way valves and a stop valve which are arranged in parallel in the middle of the high-pressure gas pipe.

6. The vehicle multi-section cylinder buffer device according to claim 1, characterized in that: The upper connecting plate is detachably connected with a buffer bag.

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