JPS636244Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Purpose of invention] (Industrial application field) The present invention relates to a snow working vehicle.

(Prior Art) In a conventional snow working vehicle, a leveling plate is installed at the rear of the bulldozer, and the leveling plate flattens the snow to eliminate snow marks.

Furthermore, as shown in Japanese Patent Application Laid-Open No. 47-2684, there is a snow clearing machine in which harrow teeth are attached to the flat surface of the blade via a channel member. By changing the angle of the blade, the teeth of the harrow are inserted into the hard snow surface and perform a snow-breaking action.

(Problems to be solved by the invention) However, when using the above-mentioned flat plate,
If only one leveling plate is used, there are some areas where the leveling plate does not work due to the unevenness of the snow surface, and it is often the case that shoe marks are erased and left behind.

Furthermore, in the snow clearing machine described in the above publication, when the snow is soft, the teeth of the harrow rise above the surface of the snow by adjusting the angle of the blade; It doesn't work at all.

An object of the present invention is to enable effective erasure of the tracks left by a bulldozer no matter what the shape of the snow surface or the quality of the snow.

[Structure of the idea]

(Means for Solving the Problems) In the present invention, a trace erasing device 3 is attached to the rear of a bulldozer 2, and this trace erasing device 3 has a large number of scraping bars 21 on the lower surface of a mounting base member 18. It is equipped with a rotating drum 14 that protrudes in a comb-like shape and prevents it from sinking into the snow, and a counterweight 19 for load adjustment.
This is a snow working vehicle that is equipped with detachable parts.

(Function) The snow working vehicle of the present invention erases travel marks by inserting the comb-shaped scraping bar 21 into the snow surface while the vehicle is traveling. At that time, the counterweight 19 applies a constant load to the scraping bar 21 depending on the snow quality. For example, if the snow quality is hard, the counterweight 19 is made heavier, and if the snow quality is soft, the counterweight 19 is made heavier. By making the scraping bar 21 lighter and preventing the scraping bar 21 from sinking excessively into the snow by the rotating drum 14,
Insert into the snow to the appropriate depth.

(Example) Hereinafter, the present invention will be described in detail with reference to an example shown in the drawings.

As shown in FIG. 1, a track erasing device 3 is attached to the rear of a bulldozer 2, which has a blade 1 whose angle and tilt can be adjusted at the front.

This travel trace erasing device 3 is supported via a three-point link hitch mechanism 4, as shown in FIG.
This three-point link hitch mechanism 4 consists of one upper link 6 and 2 which are pivotally supported on a base frame 5 so as to be able to move up and down.
The lower links 7 of the book, the two lift rods 8 that lift these two lower links 7, one hydraulic cylinder 9 that moves these two lift rods 8 up and down simultaneously, and the lift rods 8 on one side are screwed together. It is formed by a leveling crank 10 that is rotated in order to expand and contract.

As shown in FIG. 3, the travel trace erasing device 3 includes a pair of support parts, which are integrally welded to the left and right parts of the lower end of the support member 11, with the upper link 6 connected to the upper end connection part 12 of the support member 11 by a shaft. The lower link 7 is connected to the upper end of the left and right support parts 13 by a shaft, and a rotary drum 14 is supported by the shaft between the lower ends of the left and right support parts 13 to prevent the track erasing device 3 from sinking into the snow. Further, support bars 15 and 16 are integrally provided by welding to project from the pair of support parts 13 on the left and right sides and in front, and these support bars 15 and 16 support left and right mounting boards 17 as mounting base members.
and integrally supports the front mounting board 18. The upper surfaces of the left and right mounting boards 17 are integrally provided with protrusions 20 for fitting the counterweight 19 in response to subtle changes in snow quality, and are fully compatible with ice-like snow conditions. make it possible,
Further, on the lower surfaces of the mounting substrates 17 and 18, a large number of plate-shaped scraping bars 21 are provided in a comb-teeth shape so as to protrude.

The outer member of the rotating drum 14 and the plate-shaped scraping bar 21 are made of ultra-high molecular weight polyethylene (trade name: Nurite). This ultra-high molecular weight polyethylene has excellent non-adhesive properties, abrasion resistance, etc., does not attract snow, and hardly wears out.

Further, as shown in FIG. 4, each erasing bar 21 is
These scratches are arranged in unequal rows on the lower surface of the mounting board 17, and the front end is shaped into a blade shape, and as shown in FIG. By fitting the upper end of the eraser bar 21 and inserting the bolt 24 into both aligned holes 23, screwing the nut 26 into the protrusion on the opposite side of the bolt 24 via the washer 25 and tightening. Each scraping bar 21 is detachably mounted on the mounting board 17. Thereby, the erasing bar 21 can be easily replaced.

Then, as shown in Figure 6a, the bulldozer 2 is moved backward onto the slope of the ski resort,
While moving forward, the blade 1 is lowered to remove snow as shown in b, while the trace erasing device 3 is removed as shown in c.
to erase the shoe marks on the crawler track 27.

That is, the hydraulic cylinder 9 of the three-point link hitch mechanism 4 pushes down the lower link 7 via the lift rod 8, presses the rotary drum 14 against the snow surface, and inserts each scraping bar 21 into the snow. The bar 21 erases the snow marks on the snow surface.

[Effect of idea]

According to the present invention, since a large number of scraping bars are protruded in a comb-like shape from the lower surface of the mounting base member as a running trace erasing device at the rear of a bulldozer, each scraping bar can be removed even if the snow surface is somewhat uneven. By inserting an eraser into the snow, you can reliably erase the tracks of a bulldozer. Furthermore, by using the counterweight and the rotating drum, the scraping bar can be inserted into the snow to an appropriate depth no matter what the snow quality is, and the trace erasing work can be performed according to the snow quality.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of the snow working vehicle of the present invention, FIG. 2 is a perspective view of a three-point linkage hitch mechanism at the rear, FIG. 3 is a perspective view of a running trace erasing device,
FIG. 4 is a rear view of the mounting base plate, FIG. 5 is a perspective view of the scratching bar, and FIG. 6 is a side view explaining how to use the snow working vehicle. 2 ... Bulldozer, 3 ... Travel trace erasing device, 1
4: rotating drum; 17, 18: mounting base as mounting base member; 19: counterweight; 21: scraper bar.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A travel trace erasing device is attached to the rear of the bulldozer, and this travel trace erasing device has a number of comb-like scraping bars protruding from the lower surface of the mounting base member, This snow working vehicle is equipped with a rotating drum that prevents it from sinking into the snow, and is equipped with a removable counterweight for adjusting the load. (2) The snow working vehicle according to claim 1, wherein the scratching bar is made of ultra-high molecular weight polyethylene material and is detachably attached to the mounting base member. .