JPH0829691B2 - Collision buffer vehicle for automobile road traffic regulation - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a collision buffer vehicle for vehicle road traffic control, which is used when maintaining or repairing a road on a motorway such as a highway. is there.

[Prior art]

When performing work such as maintenance or repair of roads on expressways, install a collision buffer car on the road behind the work place to prevent the car from entering the work place due to drowsiness or misoperation. It is known to keep it stopped.

Conventionally, as a collision buffer vehicle for automobile road traffic regulation, as shown in FIG. 8 and FIG.
There is known a collision buffer vehicle having a structure in which an end portion of a honeycomb block 13 is fixed to a rear portion of 12.

In the case of this collision buffer vehicle, when the automobile collides with the honeycomb block 13, as shown in FIG. 10, the automobile 14 moves forward while sequentially compressing and destroying the honeycomb block 13 from the rear end toward the front. The honeycomb block 13 is stopped by compressing and breaking resistance of the honeycomb block 13 while cushioning the automobile.

[Problems to be solved by the invention]

However, in the case of the conventional collision buffer vehicle, if the length of the honeycomb block 13 is short, the compressive fracture stroke is shortened, and thus the collision buffering performance is deteriorated.
If the length of 13 is too long, the car 14 will
When it collides from an oblique direction, the honeycomb block 13
Is not compressed and broken by bending with a small force, and therefore, the buffer stopping function due to compressive failure cannot be exerted. Further, when the automobile 14 collides with a part of the rear surface of the honeycomb block 13, the area of the honeycomb block 13 which is crushed by compression is small, so that the resistance is small, and therefore, there is a problem that the automobile 14 cannot be effectively buffered. is there.

On the other hand, a collision buffer vehicle using a pantograph type link mechanism is also known (No. Shokai 58-75060), but this is mechanically complicated and easily fragile, and is stable against a collision from an oblique direction. It has the drawback of lacking in operability.

[Object and Structure of Invention]

An object of the present invention is to provide a collision damping vehicle for automobile road traffic regulation, which can advantageously solve the above-mentioned problems. , A lower end of the rear link 2 whose upper part is inclined to fall forward, and a buffer fluid pressure cylinder whose upper part is inclined to fall forward at an angle smaller than that of the rear link 2 when referred to the vertical The lower end of 10 is pivotally attached to the lateral shaft 3 of the vehicle 1 to be collided with the wheels 16,
A front link 6 is pivotally attached to a bracket 5 provided at the rear of the mobile vehicle 4 via a horizontal shaft 7, and a rear projecting arm 9 extending from an upper portion of the front link 6 and a rear link 2 are provided. The upper end portion and the piston rod of the buffer fluid pressure cylinder 10
A low-strength connecting member 19 which is connected to the upper ends of 26 by pivots 8 and 18, respectively, and is pivotally attached to the rear of the mobile vehicle 4 for movement.
Of the two arms 20 which are plastically deformable in
The front cushioning body 22 is fixed to the front cushioning body 22.

〔Example〕

 Hereinafter, the present invention will be described in detail with reference to the illustrated examples.

1 to 5 show a collision damping vehicle for vehicle road traffic regulation according to an embodiment of the present invention, in which a vehicle body
Wheels 16 are rotatably attached to the horizontal shaft 3 projecting to the left and right sides of the vehicle 15 to form a collided vehicle 1.
The lower ends of the rear links 2 whose upper portions incline so as to fall forward are fitted to the horizontal shafts 3 on both the left and right sides of the above so as to be openable. Further, brackets 5 are fixed to both left and right sides of a rear portion of a vehicle body 17 of a moving vehicle 4 for moving the vehicle 1 to be collided, and the front portions of the brackets 5 are inclined so that the upper portions thereof fall rearward. The lower end of the partial link 6 is pivotally attached by a horizontal shaft 7 extending in the left-right direction.

The upper end of the rear link 2 and the upper end of the front link 6 are pivotally attached by a pivot 8 extending in the left-right direction, and the upper end of each front link 6 is bent from each front link 6. A rear projecting arm 9 which projects substantially horizontally toward the rear is integrally connected, and a hollow piston movably fitted inside the cylinder 24 at the tip of each rear projecting arm 9.
Piston rod 26 of buffer hydraulic cylinder 10 equipped with 25
The upper end of the shaft is pivotally attached by a pivot 18 extending in the left-right direction. The lower end of the buffer fluid pressure cylinder 10 is rotatably fitted to the horizontal shaft 3. Further, the tip ends of the plastically deformable arms 20 of the plane-V-shaped low-strength connecting member 19 are detachably attached to the vehicle body 15 of the vehicle 1 to be collided, and the both-arm joint ends of the low-strength connecting member 19 are connected. , The movable self-propelled vehicle 4 is pivotally attached to the vicinity of the center of the lower rear part of the vehicle body 17 by a detachable vertical axis 21, and the front and rear portions of the vehicle body 15 of the vehicle 1 to be collided have front cushioning members 22. And a rear cushion 23 is attached. These buffers 2
2,23 may be honeycomb blocks, rubber shock absorbers or any other type.

3 to 5 show an example of the structure of the buffer fluid pressure cylinder 10, in which a hollow piston 25 slidably fitted in the cylinder 24 is provided with a large number of pistons around the piston rod 26. A through hole 27 is provided, a lid 28 for closing the through hole 27 is provided in the piston 25, and a spring receiving member 29 fixed to the end of the piston rod 26 in the piston 25 and the lid 28.
A closing spring 30 is interposed between and in a compressed state.

Further, the liquid passage port provided at the upper end of the cylinder 24 and the discharge port of the pump 31 are connected via a liquid delivery pipe 32, and the lower end of the suction pipe 33 of the pump 31 is placed in a liquid storage tank 34. Further, one end of a liquid passage pipe 35 is connected to a liquid passage port provided at the lower end of the cylinder 24, and the other end of the liquid passage pipe 35 is arranged in the liquid storage tank 34. The liquid supply pipe 32 and the liquid passage pipe 35 are connected via a communication pipe 37 having an opening / closing valve 36.

When a tensile force acts on the buffer fluid pressure cylinder 10,
Since the liquid above the piston 25 is pressurized, the pressure of the liquid opens the lid 28 against the force of the closing spring 30,
Therefore, while the liquid above the piston 25 flows through the through hole 27 and below the piston 25, the buffer fluid pressure cylinder 10
Is being extended. In this case, the extension resistance is the closing spring.
It can be adjusted by changing the strength of 30, the total area of each through hole 27, or the like.

As shown in FIGS. 6 and 7, when the automobile 14 collides with the rear cushion 23 of the vehicle 1 to be collided, the collision force of the automobile 14 is first buffered by the rear cushion 23 and then the automobile 14 Due to the collision force, the collided vehicle 1 moves forward while extending the cushioning fluid pressure cylinder 10 via the front link 6 and the rear link 2 with the rearward projecting arm 9 and plastically deforming the arm 20, and the cushioning thereof. When a front buffer 22 on the front of the collided vehicle 1 collides with the vehicle body 17 of the traveling vehicle 4 when a buffer stop force is applied to the automobile 14 by the tensile resistance of the hydraulic fluid pressure cylinder 10, the front of the vehicle 14 is collided. It is also buffered by the buffer 22.

Further, the low-strength connecting member 19 and the vehicle body 17 are detachably connected by a shear pin (vertical axis) 21 so that the shear pin 21 is sheared by the automobile when the collision force of the automobile 14 acts on the collided vehicle 1. You may comprise.

〔The invention's effect〕

According to the present invention, when the automobile 14 collides with the collided vehicle 1, the collided vehicle 1 is provided with the front link 6 and the rear link 2 having the rear projecting arm 9 and the buffer hydraulic cylinder 10.
Through the link mechanism consisting of, the buffer hydraulic cylinder 10 is moved forward while being extended, so that the vehicle 14 that collides using the substantially constant tensile resistance of the buffer hydraulic cylinders 10 on the left and right sides is effective. Even if the vehicle 14 collides with the rear portion of the collided vehicle 1 in a laterally offset position, or collides obliquely with the rear portion of the collided vehicle 1, both sides of the collided vehicle 1 can be stopped. The substantially constant tensile resistance of the buffer fluid pressure cylinder 10 in FIG.
Can be effectively buffered. More cars 14
When the collided vehicle 1 moves forward due to the collision force of, the front link 6 and the rear link 2 with the rear protruding arm 9 and the buffer fluid pressure cylinder 10 extend from the lower side to the upper side. A buffer hydraulic cylinder that constitutes a part of the link mechanism and long rear link 2 and front link 6 that are substantially vertical when viewed in plan without obstructing the traffic on the side of the vehicle to be collided 1. By using 10 and 10, the buffer movement stroke of the collided vehicle 1 can be set to be long, so that the safety can be improved and the entire mechanism is robust.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, wherein FIG. 1 is a side view of a collision buffer vehicle for automobile road traffic regulation, FIG. 2 is its plan view, and FIG. 3 is a buffer. FIG. 4 is a vertical cross-sectional side view of the hydraulic fluid pressure cylinder, FIG. 4 is a vertical cross-sectional side view showing the vicinity of a piston with a liquid flow adjusting device in the buffer fluid pressure cylinder, and FIG. 5 is a sectional view taken along the line AA of FIG. FIG. 6 is a side view showing a state in which an automobile collides with a rear portion of a vehicle to be collided, and FIG. 7 is a state in which a low-strength connecting member for coupling a traveling vehicle for traveling and a vehicle to be collided is plastically deformed. It is a top view.
FIG. 8 is a side view showing a conventional collision buffer vehicle, FIG. 9 is a rear view thereof, and FIG. 10 is a side view showing a state when an automobile collides with the collision buffer vehicle. In the figure, 1 is a vehicle to be collided, 2 is a rear link, 3 is a horizontal axis, 4 is a mobile vehicle for moving, 5 is a bracket, 6 is a front link, 7 and 8 are horizontal axes, 9 is a rear protruding arm, 10 is a fluid pressure cylinder for cushioning, 15 is a vehicle body, 16 is a wheel, 17 is a vehicle body, 18
Is a pivot, 19 is a low strength connecting member, 21 is a vertical axis, 22 is a front shock absorber, 23 is a rear shock absorber, 25 is a piston, 27 is a through hole, 28 is a lid, 29 is a spring receiving member, 30 is closed Spring, 31 is pump, 32
Is a liquid feed pipe, 35 is a liquid feed pipe, 36 is an opening / closing valve, and 37 is a connecting pipe.

Claims (1)

[Claims] 1. On both left and right sides of a vehicle to be collided 1, a lower end of a rear link 2 whose upper part is inclined so as to fall forward, and an upper part at a smaller angle than the rear link 2 when referred to vertical. The lower end portion of the buffer fluid pressure cylinder 10 that tilts so as to tilt to the horizontal axis 3 of the vehicle 1 to be collided is pivoted together with the wheels 16 and the bracket provided at the rear portion of the mobile vehicle 4 for movement. 5, a front link 6 is pivotally mounted on a horizontal shaft 7, and a rear projecting arm 9 extending from an upper portion of the front link 6, an upper end of the rear link 2, and a piston of the buffer fluid pressure cylinder 10 are provided. The upper end of the rod 26 is the pivot
Both plastically deformable arms of a low-strength connecting member 19 connected by 8, 18 and pivotally attached to the rear portion of the mobile vehicle 4 for movement.
A collision buffer vehicle for automobile road traffic regulation, characterized in that a tip end portion of 20 and a front buffer body 22 of the vehicle to be collided 1 are fixed.