JPS6027136Y2 - Snowplow - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a snowplow that is used for snow removal work on snow-covered roads and can expand and contract the auger blades according to the width of the road to perform snow removal work optimally and efficiently.

A snowplow has been proposed in which an auger blade and a board provided behind the auger blade are expandable and retractable depending on the road width.

As shown in FIGS. 1 and 2, this snowplow is provided with a snow-throwing chute 2 and a fixed board 3 at the front of a traveling vehicle body 1, and a gear wheel at the center front of the fixed board 3. A box 4 is provided, and fixed cylinders 5 are rotatably provided on both sides of the gear box 4, and a movable outer cylinder 6 is fitted into each fixed inner cylinder 5 so as to be rotatable and movable in the axial direction. Auger blades 7.8 are attached to the outer peripheral surfaces of both cylinders 5 and 6, respectively.

The outer circular end of the movable outer cylinder 6 is rotatably supported by a side frame 10 attached to the end of a movable board 9 that is slidably attached to both sides of the fixed board 3.

The movable board 9 is slid by a hydraulic cylinder device 11 provided on the back of the fixed board 3, and at the same time, the movable outer cylinder 6 also moves forward and backward with respect to the fixed inner cylinder 5.

Further, the lower end of the fixed board 3 is bent rearward to maintain a predetermined distance from the lower end of the movable board 9, and a cutting edge 12 is attached to the front side thereof.

Further, a cutting edge 14 is attached to the lower end of the moving board 9 via a mounting plate 13 (see FIG. 3) fixed to the back surface thereof.

A blower rotating shaft 19 is rotatably received by a blower casing 15 that projects from the center rear of the fixed board 3.

The input shaft 16 is rotatably received by the rotating shaft 19, and power is transmitted from the input shaft 16 to the fixed inner cylinder 5 and the movable outer cylinder 6 via a group of gears in the gear box 4.

A blower 17 is attached to the rotating shaft 19.

This rotating shaft 19 is rotated by the blower input shaft 18 via gears.

The snow collected in the center by the auger blades 7, 8 is scraped into the blower casing 15, and is discharged from the snow chute 2 by the blower 17 through an opening (path shown).

In such a snowplow, since there is a space between the lower ends of the fixed board 3 and the movable board 9 in the front and rear direction,
Cutting edges 12.1 for both boards 3 and 9
There is a problem in that snow or the like gets stuck between the four and sometimes freezes, causing the gap to widen.

This invention was made in view of the above-mentioned circumstances, and its purpose is to prevent snow from getting stuck between the lower ends of the fixed board and the movable board.

Hereinafter, embodiments of this invention will be described with reference to the drawings.

In this embodiment, the same parts as those shown in FIGS. 1 and 2 are designated by the same reference numerals, and the description thereof will be omitted.

In FIGS. 3 to 6, the movable board 9 is located in front of the fixed board 3 and is configured to slide between its lower ends without contacting each other, and has a cutting edge 12. .14 are attached to each.

The mounting plate 13 to which the cutting edge 14 is attached projects inward from the end of the moving board 9, and a scraper 20 having a substantially doglegged horizontal cross section is attached to this protrusion 13A so as to be replaceable with bolts and nuts 21. It is being

The tip of this scraper 20 is in contact with the front surface of the cutting edge 12 of the fixed board 3, and when the movable board 9 slides against the fixed board 3, the scraper 20 removes snow that has adhered to the cutting edge 12 and its vicinity. etc., scrape off.

Note that the scraper 20 may be attached to either side of the fixed board 3 or the movable board 9 as necessary.

In this invention, as described above, the movable cylinder 6 on which the auger blades 8 are attached moves forward and backward with respect to the fixed cylinder 5 on which the auger blades 7 are attached, depending on the width of the road, etc., and the auger blades 7
, 8, in which a board 3.9 extending and contracting following the movable cylinder 6 is equipped with a scraper 20 for removing snow etc. stuck between the cutting edges 12, 14 at the lower ends of the boards 3, 9. Since it is attached to the lower end of either one of the boards 3, 9, it is unlikely that snow will get stuck in the gap between the lower ends of both boards 3, 9, and snow that has adhered to the cutting edge 12 will be removed. As the movable board 9 moves, it is scraped off by the scraper 20 and does not get stuck between the two boards 3 and 9, which prevents the gap between the two boards 3 and 9 from widening.
Snow removal work can be carried out efficiently without impairing the functions of the edges 12 and 14.

[Brief explanation of the drawing]

Figures 1 and 2 show the overall structure of the snowplow. Figure 1 is a side view, and Figure 2 is a partially cutaway plan view showing the general structure of the snowplow, with the left half being movable. The right half shows the state in which the cylinder is contracted, and the right half shows the state in which the movable cylinder is extended. Figures 3 to 6 show examples of this invention, and Figure 3 is shown along the line ■-■ in Figure 2. Yes, the cross-sectional view of the board, Figure 4 is IV of Figure 3.
- A partial front view of the board taken along line IV, Figure 5 is a sectional view taken along line ■-■ in Figure 4, and Figure 6 is a cross-sectional view taken along line ■-■ in Figure 5.
It is a bottom view seen along a line. 3...Fixed board, 5...Fixed tube, 6
......Moving tube, 7,8...Auger blade,
9...Moving board, 12.14...Cutting edge. 13...Mounting plate, 20...Scraper.

Claims (1)

[Scope of utility model registration request] The movable cylinder 6 on which the auger blades 8 are attached moves forward and backward with respect to the fixed cylinder 5 on which the auger blades 7 are attached, and the auger blades 7
, 8, in which boards 3 and 9 expand and contract following the movable tube 6, a scraper 20 is provided for removing snow etc. stuck between the cutting edges 12 and 14 at the lower ends of the boards 3 and 9. A snowplow attached to the lower end of either board 3 or 9.