CN203567672U

CN203567672U - Fork-shaped telescopic back protection device

Info

Publication number: CN203567672U
Application number: CN201320799265.3U
Authority: CN
Inventors: 朱冰; 吴利广; 韩嘉懿; 孙博华; 赵健; 王作文; 张明
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2013-12-06
Filing date: 2013-12-06
Publication date: 2014-04-30
Anticipated expiration: 2023-12-06

Abstract

The utility model discloses a fork-shaped telescopic back protection device, which consists of an air pressure cylinder, a support frame and a back bumper, wherein the air pressure cylinder is fixedly arranged on the back wall of a vehicle frame, the lower end of the air pressure cylinder is connected with a transmission rod, the air pressure cylinder drives the transmission rod to upwards and downwards move, the two sides of the lower end of the transmission rod are respectively provided with a first slide block and a second slide block, two support arms of the support frame are pivoted through a fixing shaft, the fixing shaft is fixedly arranged on the back wall of the vehicle frame, the first slide block arranged at the lower end of the transmission rod is arranged in a first chute in an embedded way and can slide in the first chute, the second slide block arranged at the lower end of the transmission rod is arranged in a second chute in an embedded way and can slide in the second chute, the lower ends of the two support arms of the support frame are respectively provided with a third slide block and a fourth slide block, and the back side of the back bumper is provided with a third chute and a fourth chute. The fork-shaped telescopic back protection device has the beneficial effects that the mechanism is simple, the installation is convenient, in addition, the cost is lower, the marketization can be easily realized, the work is safe and reliable, the action of the air pressure cylinder is accurate, and the precision is high.

Description

The telescopic rear of fork-shaped

Technical field

The utility model patent relates to a kind of vehicle rear, particularly the telescopic rear of a kind of fork-shaped.

Background technology

At present, the domestic and international research about heavy-duty vehicle rear, mainly based on Purely mechanical rear, because the rear protecting of heavy-duty vehicle is higher apart from ground, when the vehicle of the types such as car or SUV and heavy goods vehicles knock into the back, easily cause the vehicles such as car or SUV " to pierce " heavy goods vehicles rear overhang part, cause great injures and deaths.With the heavy-duty vehicle of adjustable rear, though its rear has reduced the ground Clearance, because device is adjustable, produced again the lower problem of intensity at present.

Adopt electromechanical integration technology both can be when having guaranteed collision the safety of front vehicle, can improve again the crossing ability of vehicle, protection vehicle is when normally travelling, its rear is difficult for damaging.But its cost of correlative protection mechanism of existing electromechanical integration is higher, and weight is larger, is also difficult for universal and promotes.

Summary of the invention

The purpose of this utility model is in order to solve the more problem that the heavy goods vehicles rear of existing Purely mechanical and electromechanical integration in use exists and the telescopic rear of a kind of fork-shaped providing.

The telescopic rear of fork-shaped described in the utility model is by air cylinder, support and rear bumper form, wherein air cylinder is fixed on vehicle frame rear wall, the lower end of air cylinder is connected with drive link, air cylinder drives drive link up-and-down movement, the both sides, lower end of drive link are respectively equipped with the first slide block and the second slide block, two support arms of support are articulated by anchor shaft, anchor shaft is fixed on vehicle frame rear wall, on two support arms of support, be respectively equipped with the first chute and the second chute, the first slide block of drive link lower end is embedded in the first chute, the first slide block can slide in the first chute, the second slide block of drive link lower end is embedded in the second chute, the second slide block can slide in the second chute, two support arm lower ends of support are respectively equipped with the 3rd slide block and Four-slider, the rear side of rear bumper is provided with the 3rd chute and the 4th chute, the 3rd slide block of a support arm lower end of support is embedded in the 3rd chute, the 3rd slide block can slide in the 3rd chute, the Four-slider of another support arm lower end of support is embedded in the 4th chute, Four-slider can slide in the 4th chute.

Support is fork configuration.

Principle of work of the present utility model is as described below:

When dilly knocks into the back trend after heavy goods vehicles, in the telescopic rear of fork-shaped, air cylinder drives drive link to decline, thereby first slide block of drive link by lower end and the second slide block respectively slip in the first chute and the second chute drive the 3rd slide block and the Four-slider of two support arm lower ends of support to move downward, the 3rd chute and the 4th chute by rear bumper rear side when the 3rd slide block and Four-slider move downward decline rear bumper, thereby prevent that rear compact car from piercing heavy goods vehicles bottom.

When danger is removed, air cylinder in the telescopic rear of fork-shaped drives drive link to rise, thereby first slide block of drive link by lower end and the second slide block respectively slip in the first chute and the second chute drive the 3rd slide block and Four-slider upward movement of two support arm lower ends of support, the 3rd chute and the 4th chute by rear bumper rear side in the time of the 3rd slide block and Four-slider upward movement rise rear bumper, thereby improve the crossing ability of heavy goods vehicles.

The beneficial effects of the utility model:

The telescopic rear of fork-shaped described in the utility model adopts pneumatic transmission, can directly use heavy goods vehicles self source of the gas, be convenient to install and drive, and sturdy and durable, long service life; Mechanism is simple, easy for installation, and cost is lower, is easy to the marketization; Safe and reliable, accurately, precision is high in air cylinder action.

Accompanying drawing explanation

Fig. 1 is the main TV structure schematic diagram of the utility model.

Fig. 2 is the utility model backsight structural representation.

Fig. 3 is the utility model decomposition texture schematic diagram.

Fig. 4 is support arm structure figure of support described in the utility model.

Fig. 5 is another support arm structure of support described in the utility model figure.

1, air cylinder 2, support 3, rear bumper 4, vehicle frame rear wall 5, anchor shaft

11, drive link 12, the first slide block 13, the second slide block 21, the first chute

22, the second chute 23, the 3rd slide block 24, Four-slider 33, the 3rd chute

34, the 4th chute.

The specific embodiment

Refer to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5:

The telescopic rear of fork-shaped described in the utility model is by air cylinder 1, support 2 and rear bumper 3 form, wherein air cylinder 1 is fixed on vehicle frame rear wall 4, the lower end of air cylinder 1 is connected with drive link 11, air cylinder 1 drives drive link 11 up-and-down movements, the both sides, lower end of drive link 11 are respectively equipped with the first slide block 12 and the second slide block 13, two support arms of support 2 are articulated by anchor shaft 5, anchor shaft 5 is fixed on vehicle frame rear wall 4, on two support arms of support 2, be respectively equipped with the first chute 21 and the second chute 22, the first slide block 12 of drive link 11 lower ends is embedded in the first chute 21, the first slide block 12 can be in the interior slip of the first chute 21, the second slide block 13 of drive link 11 lower ends is embedded in the second chute 22, the second slide block 13 can be in the interior slip of the second chute 22, two support arm lower ends of support 2 are respectively equipped with the 3rd slide block 23 and Four-slider 24, the rear side of rear bumper 3 is provided with the 3rd chute 33 and the 4th chute 34, the 3rd slide block 23 of 2 one support arm lower ends of support is embedded in the 3rd chute 33, the 3rd slide block 23 can be in the interior slip of the 3rd chute 33, the Four-slider 24 of support 2 another support arm lower ends is embedded in the 4th chute 34, Four-slider 24 can be in the interior slip of the 4th chute 34.

Support 2 is fork configuration.

Principle of work of the present utility model is as described below:

When dilly knocks into the back trend after heavy goods vehicles, in the telescopic rear of fork-shaped, air cylinder 1 drives drive link 11 to decline, thereby first slide block 12 of drive link 11 by lower end and the second slide block 13 respectively slip in the first chute 21 and the second chute 22 drive the 3rd slide block 23 and the Four-slider 24 of two support arm lower ends of support 2 to move downward, the 3rd chute 33 and the 4th chute 34 by rear bumper 3 rear sides when the 3rd slide block 23 and Four-slider 24 move downward decline rear bumper 3, thereby prevent that rear compact car from piercing heavy goods vehicles bottom.

When danger is removed, air cylinder 1 in the telescopic rear of fork-shaped drives drive link 11 to rise, thereby the first slide block 12 by lower end of drive link 11 and the second slide block 13 respectively slip in the first chute 21 and the second chute 22 drive the 3rd slide block 23 and Four-slider 24 upward movements of two support arm lower ends of support 2, the 3rd chute 33 and the 4th chute 34 by rear bumper 3 rear sides in the time of the 3rd slide block 23 and Four-slider 24 upward movement rise rear bumper 3, thereby improve the crossing ability of heavy goods vehicles.

Claims

1. the telescopic rear of fork-shaped, it is characterized in that: be by air cylinder, support and rear bumper form, wherein air cylinder is fixed on vehicle frame rear wall, the lower end of air cylinder is connected with drive link, air cylinder drives drive link up-and-down movement, the both sides, lower end of drive link are respectively equipped with the first slide block and the second slide block, two support arms of support are articulated by anchor shaft, anchor shaft is fixed on vehicle frame rear wall, on two support arms of support, be respectively equipped with the first chute and the second chute, the first slide block of drive link lower end is embedded in the first chute, the first slide block can slide in the first chute, the second slide block of drive link lower end is embedded in the second chute, the second slide block can slide in the second chute, two support arm lower ends of support are respectively equipped with the 3rd slide block and Four-slider, the rear side of rear bumper is provided with the 3rd chute and the 4th chute, the 3rd slide block of a support arm lower end of support is embedded in the 3rd chute, the 3rd slide block can slide in the 3rd chute, the Four-slider of another support arm lower end of support is embedded in the 4th chute, Four-slider can slide in the 4th chute.

2. the telescopic rear of fork-shaped according to claim 1, is characterized in that: described support is fork configuration.