JPH0645486Y2 - Track grader with side blade - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a grader capable of temporarily stopping snow removal in the roadside direction, and is particularly suitable for high-speed snow removal in urban areas, highways, and the like.

[Conventional technology]

In the winter, if snow is not removed in time and the road is compressed, it will be very dangerous because the vehicle will slip unless you use spiked tires. Therefore,
It is necessary to remove the pressure snow with a grader (road surface leveling device).

However, since the removal of snow pressure is usually performed in the roadside direction, that is, toward the left side, if there is a road on which the vehicle runs on the left side, such as at an intersection in an urban area or an interchange on a highway, the snow pressure that has been removed will be removed. However, it will be scattered on the road, which is not preferable.

For this reason, conventionally, two side blades that can be folded are arranged on the side of the grader so that the side blades can be raised and lowered, and as a matter of fact, the side blades are lowered to hold the snow on the left side. I was trying to remove the snow without scattering the snow (Shinkai 60-405).
No. 23 published specification and drawings). However, according to this method, the side blades must be constructed so that they can be bent upward and downward in two in order to prevent the locus of movement of the side blades during vertical movement from projecting too much to the side. , Other design requirements, such as wanting to configure the rear part of the side blade to wrap around the end of the grader to completely hold the snow, or the edge of the side blade so that the snow on the road does not directly hit the side, It was not possible to meet the demand that the blade be oriented parallel to the traveling direction.

Because, if you bend the rear part of the side blade and bring the part behind the pivotal part that bends outward to the grader side, this rear part becomes an obstacle and you can not bend it. Because it will be. On the other hand, if the side blades are rotatably supported at the rearmost portions, the structure becomes too complicated and a problem in strength occurs. Furthermore, if the rear portion of the side blade cannot be bent toward the grader side, the side blade is perpendicular to the one-way grader with respect to the traveling direction so that no gap is created between the side blade and the grader. Since it becomes necessary to dispose the side blades, it becomes impossible to dispose the side blades in parallel with the traveling direction.

[Problems to be solved by the present invention]

Therefore, in the present invention, it is a technical subject to prevent the locus when the side blade is raised and lowered does not bulge outward so much even if the side blade is not configured to be capable of being folded in two.

[Means adopted for solving the problem]

The means adopted by the present inventor to solve the above problems will be described below.

That is, first, the road surface adjusting blade 2 is arranged in a one-sided manner on the lower surface of the center of the chassis 1, and then the frame 3 is arranged above the blade 2 on the downstream side and parallel to the side of the frame 3. The links 13, 13, 14, 14 are connected, and further, the side blade 4 whose rear portion is bent toward the link is connected to the end of this link, and the side blades 4 are held so as to move up and down in parallel while standing. Parallel link by fluid pressure actuated cylinder 10
By swinging 13 ・ 13 ・ 14 ・ 14 and moving the side blade 4 up and down, the side blade can be moved while keeping the posture of the side blade upright, eliminating the need to bend the side blade, and other side blade design We were able to meet the demand.

〔Example〕

 Hereinafter, the present invention will be described based on embodiments.

On the lower surface of the chassis 1 of the truck, a blade 2 for adjusting the road surface is suspended. The blade 2 is pressed against the road with a predetermined pressure by the action of a fluid pressure operated cylinder (not shown), and the right blade end is located in front of the left blade end. When the car runs, it can remove snow to the left while causing pressure on the road.

A frame 3 is arranged on the upper surface of the chassis 1 of the truck. At the left end of this frame 3, parallel links 13
14 ・ 14 are pivotally installed. Furthermore, this parallel link 13 ・ 13
・ 14 ・ 14 The side blade 4 is connected to the tip, and it swings up and down while keeping the road surface and the blade surface vertical and keeping the track running direction and the blade surface parallel. .

The side blade 4 has its rear portion bent toward the track side and wraps around the rear portion of the blade 2. When the side blade 4 is lowered, the blade 2
It is designed to completely hold the pressure snow that is carried by and not let it escape.

In addition, there is a bridge between the parallel links 13 and 13. The expansion / contraction of the fluid pressure actuated cylinder 10 is transmitted to the shaft via the connecting rod 12 and the triangle link 8 and can be moved up and down by an operation from the driver's seat.

When removing snow using a road leveling device with a side blade as described above, normally, the fluid pressure cylinder is retracted and the side blade is raised while the snow is thrown away while dumping the snow to the left. When approaching an intersection or interchange, extend the fluid pressure cylinder to lower the side blades, stop dumping snow to the left, and raise the side blades again after the intersection or interchange. , It is sufficient to remove the pressure snow.

[Effect of device]

As described above, according to the grader of the present invention, by adopting the parallel link mechanism, even if the side blade is not folded in two, the side blade moves up and down while keeping the upright posture, and its locus is outward. Does not swell. Moreover, unlike the conventional case, a double-folding mechanism of the side blade is not required, so that the structure is simple and the rear portion can be bent inward.

Thus, the grader of the present invention has high industrial utility value.

[Brief description of drawings]

FIG. 1 is a side view of the embodiment. FIG. 2 is a partially enlarged rear view of the embodiment. FIG. 3 is a partially enlarged plan view of the embodiment. FIG. 4 is a partially enlarged side view of the embodiment. 1 ... Chassis, 2 ... Blade, 3 ... Frame, 4 ... Side blade, 10 ... Fluid pressure operating cylinder, 13,14 ... Parallel link.

Claims (1)

[Scope of utility model registration request] 1. A blade 2 for rectifying a road surface, which is arranged in a one-sided manner on a lower surface of a central portion of a chassis 1, a frame 3 arranged above the blade 2 downstream side, and a frame 3 which is connected to a side of the frame 3. Parallel link 13, 13, 14, 14
With this, the side blade 4 which is held so as to move up and down in parallel in the upright state, and the rear portion is bent toward the parallel link connecting side, and the parallel links 13, 13, 14, 14 are swung to move the side blade 4 A track grader with a side blade, comprising: a fluid pressure actuating cylinder 10 for raising and lowering.