JPH0118662Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a plow blade that can improve the snow removal performance of an angle-type plow device in which the blade angle is rotatable in either the left or right direction.

(Prior Art) In general, an angle-type plow device has a one-way plow blade that can rotate in either the left or right direction, and when traveling at a speed of 30 km to 40 km per hour, it can move snow from either the left or right direction. It is necessary to sweep it to that side and to fly it as high and far as possible. In this way, by collecting snow on the road surface and blowing it away, widening work that maintains the effective width of the road can be achieved.

By the way, as shown in FIGS. 3 and 4A, in the conventional angle-type plow device 1, the plow blade 2 is formed in an arcuate cross-section with the same bending radius, and the upper and lower edges are straight. An upper protrusion 3 is provided to smoothly move the snow to either the left or right end, and to project the upper edge of both ends obliquely upward.
The angle A of the upper protrusion was experimentally selected to be approximately 15 degrees to 25 degrees. Therefore, this upper protrusion 3
was designed to open diagonally upward, and the axial direction 22 of the radially inclined bending rollers was designed to blow snow high and far.

(Problem to be solved by the invention) However, with such a plow blade 2, the flow of snow to either the left or right end becomes weak and tends to stagnate due to wind resistance from the lateral direction. The snow does not fly too high and far, and even if it does, it does not clump together, and as shown in Figure 5A,
There was a risk of falling onto the side of the Note that a is the gap between both ends of the plow blade 2 and the cab 23.

As the snow flow weakens due to the crosswind, the snow accumulated on the surface of the plow blade 2 is pushed up, overflows the upper edge of the plow blade 2, and reaches the blade support mechanism 4 installed on the back surface of the plow blade 2. There was a risk that snow removal operations would be hindered. In order to prevent this overflow, a sag rubber 5 has been installed at the upper center edge of the plow blade 2, but this is not necessarily an appropriate measure to prevent overflow.

In view of the above-mentioned points, the present invention effectively solves the problems of the prior art.The purpose of the present invention is to have a simple structure, and to prevent the snow removal performance from being obstructed even by wind from the side. The object of the present invention is to provide a plow blade that can be improved.

(Means for solving the problem)) In order to achieve such an objective, the present invention
In a plow blade, the blade angle is rotatable in either the left or right direction, the cross section is arcuate with the same bending radius, and the upper and lower edges of the central part are straight. The left and right end portions are formed to have an upwardly sloping arcuate cross-section based on the angle of an upper protrusion that protrudes obliquely upward from the linear upper edge of the central portion when viewed in elevation, and has an arcuate cross-sectional shape when viewed from above. The present invention is characterized in that it includes blades on both sides that are provided with a receding angle that recedes diagonally backward from the central portion.

(Function) With this technical means, blades are provided on both the left and right ends of the plow blade, and the blades are inclined upward based on the angle of the upper protrusion and are formed into an arcuate cross section, and the receding angle diagonally backward is With this arrangement, snow can be scooped up and thrown high and far despite crosswinds, and snow removal performance can be improved.

(Example) Next, an example of the present invention will be described in detail based on the drawings.

FIG. 1 shows a schematic configuration diagram of an embodiment of the present invention, A is a back view thereof, B is a plan view thereof, C is a side view thereof, and FIG. 2 is a perspective view of a plow blade. In FIGS. 1 and 2, the plow device 6
The plow blade 7 is mounted on the front of a snow removal vehicle (not shown) by a blade support mechanism 8, and the plow blade 7 can be rotated in either left or right direction by operating a hydraulic cylinder 9.

By the way, the blades 10 on both sides are provided at both left and right ends of the plow blade 7, and in a stereoscopic view, have an upward protrusion angle A similar to that shown in FIG. , and as shown in FIG. 4B, the axial direction 21 of the bending roller as a whole is inclined upward in parallel based on the upward protrusion angle A, and in this embodiment, the bending roller has the same bending radius as the plow blade 7. It is formed into an arcuate cross section. Further, in plan view, the blades 10 on both sides are provided with a receding angle B that recedes diagonally backward from the axis. In this embodiment, the retreating angle B is approximately 15 degrees, but it goes without saying that the angle can be appropriately selected depending on the snow quality and other conditions.

Furthermore, the blades 10 on both sides have a slightly larger bending radius toward the outside, and the axial direction 21 of the bending roller is formed radially, so that the resistance of the blade surface during snow movement can be minimized. good.

In this way, the plow blade 7 is formed so that its both side blades 10 are open diagonally upwardly and diagonally backwardly, so that even if the plow blade 7 receives lateral wind as shown in FIG. 1
At 0, the synergistic effect of the axial direction 21 of the bending roller based on the upward angle A and the backward angle B makes it possible to collect snow and throw it high and far, and snow does not accumulate on the surfaces of the blades 10 on both sides. Therefore, the snow on the surface of the plow blade 7 is transferred to the blades 1 on both sides.
Since the snow flows easily in the zero direction and is fluid, the amount of snow that overflows from the upper end of the plow blade 7 is reduced. In addition, as shown in FIG. 5B, in combination with the small gap a1 between the blades 10 on both sides and the cab 23, the snow is not allowed to fall onto the cab 23 but is thrown high and far, which impedes snow removal work. Less is.

Note that the axial directions 20, 21, and 22 of the bending rollers shown in FIGS. 4A and 4B are shown to facilitate understanding of the present invention. There are no lines such as marks or the like.

(Effect of the invention) As explained above, according to the invention, the upper protrusions provided at the left and right ends of the plow blade and protruding diagonally upward from the straight upper edge of the central part of the plow blade are used to raise the upper protrusion. Although the configuration is simple by providing blades on both sides that are inclined in the direction and formed to have an arcuate cross section and have a receding angle that recedes diagonally backward from the central portion, the problems of the prior art can be solved. This effectively solves the problem, and even when there is a strong crosswind, it is possible to blow snow high and far, and the snow does not accumulate on the plow blades and flows well, reducing overflow and improving snow removal performance. .

[Brief explanation of the drawing]

Fig. 1 shows a schematic configuration diagram of one embodiment of the present invention, Fig. A is a back view thereof, Fig. C is a side view thereof, Fig. 2 is a perspective view of the plow blade, and Fig. 2 is a perspective view of the plow blade. Figure 3 shows a schematic configuration diagram of a conventional plow vehicle, Figure A is its back view, Figure B is its top view,
Figure C is a side view thereof, Figure 4 is a schematic explanatory diagram of the plow blade, Figure A is a conventional plow blade, Figure B is the plow blade of the present embodiment shown in Figure 1, and Figure 5 is a schematic explanatory diagram of the plow blade. The diagrams show the mutual relationship between the plow blade and the cab, where A shows the conventional state and B shows the state of the present embodiment shown in FIG. 1. 6...Plow car, 7...Plow blade, 8...
...Blade support mechanism, 10...Both sides blade, A
...Upward protrusion angle, B...Retreat angle.

Claims (1)

[Scope of utility model registration request] In a plow blade, the blade angle is rotatable in either the left or right direction, the cross section is arcuate with the same bending radius, and the upper and lower edges of the central part are straight. The left and right end portions are formed to have an upwardly sloping arcuate cross-section based on the angle of an upper protrusion that protrudes obliquely upward from the linear upper edge of the central portion when viewed in elevation, and has an arcuate cross-sectional shape when viewed from above. The plow blade is characterized in that it includes blades on both sides that are provided with a receding angle that recedes diagonally backward from the central portion.