JP3003860B1 - Shutter bucket for snow removal - Google Patents

Abstract

An object of the present invention is to make it difficult to remove snow because it is difficult to follow unevenness of the ground because the shutter that is swung down is in a fixed state. SOLUTION: At the front end of at least one side plate 9a of a snow removing work bucket, a slide shaft 10 is provided which is inclined from a vertical line 14 at a constant backward inclination angle with a bottom surface 9b of the bucket being parallel to the ground.
The shutter 11 is provided so as to be guided up and down and slidable up and down. This allows the shutter 11 to automatically move up and down and follow the load even when the load is applied when the shutter 11 encounters unevenness on the ground during snow removal, so that the load can be released and the snow removal work can be performed smoothly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snow removing work shutter bucket provided with a slidable shutter on a snow removing work bucket.

[0002]

2. Description of the Related Art Conventionally, a snow removing machine having a snow removing work bucket for removing snow and a snow removing dozer having an angling plow are known. In snow removal dozers with angling plows, snow plows can be angulated to the left or right to remove snow on either the left or right side of the road surface.

[0003] Further, there is known a snow plow provided with a shutter device which is opened and closed in a swing-down manner at one end of a snow plow for the purpose of making the snow removing operation more efficient and easier (for example, Japanese Utility Model Publication No. 58-51217). reference).

[0004]

Problems to be Solved by the Invention
In the swing-down shutter disclosed in Japanese Patent No. 217, there is a drawback that the shutter is fixed at the swung-down position, so that it cannot follow unevenness of the ground, and it is difficult to remove snow, and that the shutter cannot be opened outward. Partly, the fact that the shutter was a blind spot for the driver and could not be seen also made workability worse. Although the shutter was moved down by a hydraulic system for easy operation, the structure was complicated and costly.

[0005] In addition, with a snow blower equipped with a bucket for snow removal work, snow removal work like the above-mentioned angling plow cannot be performed naturally.

[0006]

In order to solve the above-mentioned problems, a shutter bucket according to the present invention is provided on a front end of at least one side plate of a snow removal work bucket from a vertical line with a bottom surface of the bucket being parallel to the ground. A slide shaft that is inclined at a fixed rearward inclination angle is provided, and a shutter is provided so as to be guided up and down and slidable by the slide shaft.

[0007] This allows the shutter to automatically move up and down and follow the load even if a load is applied when the shutter encounters unevenness on the ground during snow removal, so that the load can be released and the snow removal operation can be performed smoothly. Also, when the snow is scraped off by the blade edge of the bucket, the shutter slides upward, so that it does not become an obstacle.

In this case, if the shutter is provided so as to be able to swing around the slide shaft, the shutter can be opened outward, so that the snow removal operation can be performed with confidence while checking the tip of the shutter from the driver's seat. Snow can be easily removed even when there is an obstacle (for example, a parked car).

Further, if the support rod is pivotally attached to the bucket and the front end of the support rod is engaged with the shutter so that the shutter can be fixed, the shutter can be fixed at the snow removing position (outward opening angle). At this time, if the length of the support rod is made variable, the opening angle of the shutter can be easily adjusted.

Also, the slide shaft is moved about 10
When provided with a rear inclination angle of 15 ° to 15 °, the shutter can quickly and smoothly move up and down with respect to the unevenness of the ground to follow the load and release the load, so that the snow removing operation can be performed smoothly.

If a fastening metal fitting for storing the shutter is provided on the bucket side plate and a fitting metal fitting is provided on the shutter side, the shutter can be rotated and fixed in a state stored in the side surface of the bucket.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of a wheel type tractor shovel provided with a shutter bucket according to the present invention.

As shown in FIG. 1, a driver's cab 4 having wheels 2 and 3 in front and rear of a vehicle body 1 and forming a driver's cab in a central portion is erected, and a swing arm 5 extending forward of the driver's cab 4 is provided. And a shutter bucket B is provided at the tip of the swing arm 5. The shutter bucket B can be moved up and down by a telescopic operation of a hydraulic cylinder 6 extending from the vehicle body 1, and is tilted forward and backward around a pivot pin 5 a by a link mechanism 8 connected to another hydraulic cylinder 7. Tilt is possible.

FIG. 2 is an enlarged side view of the shutter bucket B, in which the bottom surface of the bucket is level with the ground and is in contact with the ground. FIG. 3 is a plan view of a main part.

As shown in FIGS. 2 and 3, the shutter bucket B includes a bucket body 9 and a slide shaft 10.
A shutter 11 that can slide diagonally up and down along
It comprises a support rod 12 for holding the shutter 11 and the like.

When the triangular extension plate 13 is connected to the side plate 9a of the bucket body 9 and the bucket bottom surface 9b is parallel to the ground, the front end of the extension plate 13 is
From the rear and at a predetermined angle (backward tilt angle) θ. A slide shaft 10 is provided in parallel along the front end of the extension plate 13. The slide shaft 10 extends from the lower end of the bucket body 9 to the upper end of the extension plate 13, and projects from the extension plate 13.
Bracket 15 and a bracket 16 projecting from the lower end of the bucket body 9.

The shutter 11 has a substantially fan shape. That is, the rear end edge 11a is formed parallel to the slide shaft 10, the upper part of the front edge 11b has an arc shape, and is parallel to the rear end edge 11a from the center to the lower end.
1c is on an extension of the upper surface of the cutting edge 9c at the front of the bucket body. A guide ring 17 is provided at the rear edge of the shutter 11 so as to project upward and downward.
Is loosely inserted. Accordingly, the shutter 11 is guided by the slide shaft 10 so as to be slidable in the vertical direction, and as shown in FIG.
Can be swung around the shaft and can be opened outward (outward opening angle α). Normally, the open angle α is 40
° is around. At the lower end of the shutter 11, an edge plate 11d having a front end formed in an arc shape is continuously provided downward, and the lower end of the edge plate 11d is in contact with the ground G. The cutting edge 9c at the front of the bucket body 9
A wear edge 9d is provided at a lower portion of the bucket, and this is in contact with the ground to prevent wear of the bucket bottom surface. The shutter 11 may be provided on only one side of the bucket body 9 or may be provided on both sides.

As described above, the slide shaft 10 is provided obliquely to the rear with respect to the vertical line 14. Thereafter, it has been confirmed by experiment that the tilt angle θ is preferably set in the range of 10 ° to 15 °, and it has been found that the tilt angle θ is preferably about 12.5 °. The rear inclination angle θ is set so that the bucket body 9 moves forward during the snow removing operation and the shutter 11 can smoothly move up along the slide shaft 10 when the edge plate 11d of the shutter 11 hits the convex portion of the ground. In order to Thereby, the shutter 11 can slide up and down even on unevenness of the ground to relieve the load applied to the shutter 11, and the snow removing operation can proceed smoothly.

On the other hand, the support rod 1
2 is engaged and the shutter 11 swings (outside open angle)
Can be held. That is, the bucket side plate 9
A long support rod 12 having a base end pivotally attached thereto is provided at a lower portion of the support rod a, and a ring rod 18 having a ring portion 18a is screwed into the other end (free end) thereof. The engagement rod 1 protruding from the shutter 11 at the portion 18a
1e is fitted, and a stopper (linch pin) (not shown) is provided so that the support rod 12 does not come off in the engaged state.

A ring rod 18 having a ring portion 18a at its distal end is also screwed into the base end of the support rod 12, and the engaging pin 1 projecting from the bucket side plate 9a into this ring portion 18a.
The nut 9 is screwed into the tip of the support rod 9, and the support rod 12 is pivotally attached to the bucket body 9. Therefore, the ring rod 18 is screwed into the support rod 12 to shorten the overall length, or by extending the shutter 11 in the opposite direction, so that the outer opening angle of the shutter 11, that is, the outer opening angle with respect to the extension of the bucket side plate 9a. The angle α can be appropriately adjusted. It should be noted that the support rod 12 may be configured as a turnbuckle type so that its length can be adjusted.

As shown in FIG. 1, the shutter 11 and the support rod 12 can be accommodated along the bucket side plate 9a. That is, as shown in FIG. 2, the support rod 12 removes a stopper (linch pin) (not shown) on the engagement pin 11e, and pivots to the position shown by the imaginary line at the base end of the support rod, that is, the engagement pin. The support rod 12 is retracted by rotating counterclockwise around 19 as a fulcrum, engaging with a locking pin 21 provided above the bucket side plate 9a, and fixing with a stopper (linch pin) removed from the engaging pin 11e. You. On the other hand, the shutter 11 is lifted along the slide shaft 10 and rotates around the slide shaft 10 so as to come to a position of an imaginary line along the bucket side plate 9a. In order to fix the shutter 11 at that position, a metal fitting (eye plate) 22 is protrudingly provided on the shutter 11 side, and a metal fitting 23 is provided on the bucket side plate 9a. An engaging pin 23a constituting the engaging metal fitting 23 is inserted so as to be able to advance and retreat between a pair of parallel plates 23b, and is urged in a projecting direction by a spring 23c provided behind. Therefore, the fastening pin 23
a is retracted by pulling a backward, the eye plate 22 on the shutter 11 side is positioned between the parallel plates 23b, and then automatically released through the hole of the eye plate 22 by releasing the engaging pin 23b. The shutter 11 is held and stored along the bucket side plate 9a. If the shutter 11 and the support rod 12 are stored, it can be used as a normal bucket.

As shown in FIG.
With the shutter 11 grounded and the shutter 11 fixed at an open angle α as shown in FIG.
Advance the snowplow. At this time, shutter 1 from the driver's seat
Since the front end of the vehicle 1 can be seen, snow can be removed safely even when the vehicle is parked as shown in FIG. 4 (FIG. 4). Also, even if there are some irregularities on the ground, the shutter 11 can slide up and down to follow, so that snow can be removed smoothly. And
As shown in FIG. 4, when the inside of the bucket body 9 is full of snow and the state where the snow accumulates obliquely from the tip of the shutter 11, the snow flows obliquely as if it were an angling plow, and snow is removed. That is, the shutter bucket B of the present application exhibits the same function as the angling plow.

As shown in FIG. 5, the bucket body 9 is tilted forward, and the snow removing work vehicle is moved backward with the edge plate 9d and the front end of the shutter 11 grounded, so that the snow is scraped backward by the edge plate 9d. Work can be performed, but in this case, since the shutter 11 slides upward, the shutter 11 does not hinder and does not hinder the work.

[0025]

According to the shutter bucket of the present invention, the shutter for snow removal work is provided with a shutter that can slide up and down with a rearward inclination angle. Since it follows up and down, the load can be released and the snow removal work can be performed smoothly. Also, when the snow is scraped off by the blade edge of the bucket, the shutter slides upward, so that it does not become an obstacle. Further, the cost is lower than that of the conventional hydraulic type.

In particular, if the shutter is provided on the slide shaft so as to be swingable, the shutter can be opened outwardly.
The snow removal operation can be performed with peace of mind while checking the tip of the shutter from the driver's seat, and snow can be easily removed even when there is an obstacle (for example, a parked car).

[Brief description of the drawings]

FIG. 1 is a side view of a wheel-type tractor shovel including a shutter bucket according to the present invention.

FIG. 2 is an enlarged side view of a shutter bucket.

FIG. 3 is a plan view of the main part.

FIG. 4 is a main part diagram showing a state in which snow is removed by the shutter bucket of the present application up to an obstacle, and at the same time, a function similar to that of an angling plow is performed to perform snow removal work.

FIG. 5 is a side view showing the state of the scraping operation of snow by the shutter bucket of the present application.

[Explanation of symbols]

 B: Shutter bucket 9: Bucket body 9a: Bucket side plate 10: Slide shaft 11: Shutter 12: Support rod 22: Metal fitting 23: Metal fitting

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akihiro Asano 1-2-2 Omagari Chuo, Kitahiroshima City, Hokkaido Inside Kawasaki Heavy Construction Machinery Co., Ltd. (56) References JP-A-63-2496 (JP, A) (58) ) Surveyed field (Int.Cl. ⁷ , DB name) E01H 5/04 E01H 1/00

Claims (6)

(57) [Claims] 1. A slide shaft is provided at the front end of at least one side plate of a bucket for snow removal at a slant angle from the vertical line at a constant backward inclination angle with the bottom surface of the bucket parallel to the ground, and guided by the slide shaft. A shutter bucket for snow removal work that has a shutter that can slide up and down. 2. A shutter bucket for snow removal work according to claim 1, wherein the shutter is swingable about a slide shaft. 3. The shutter bucket according to claim 2, wherein a support rod is pivotally attached to the bucket, and a front end of the support rod is engaged with the shutter so that the position of the shutter can be fixed. 4. The shutter bucket according to claim 3, wherein the length of the support rod is variable. 5. The slide shaft is about 10 ° from a vertical line.
The shutter bucket for snow removal work according to any one of claims 1 to 4, wherein the shutter bucket is provided with a rear inclination angle of 15 °. 6. The shutter bucket for snow removal according to claim 1, wherein an attachment metal for storing the shutter is provided on the bucket side plate, and an attachment metal is provided on the shutter side.