JPH048564B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Technical Field> The present invention relates to a working device, and more particularly to a working device equipped with a snow eave cutting mechanism for removing snow eaves.

<Background Art> Conventionally, working devices equipped with working blades have been used to remove snow accumulated on roads and the like.

On the other hand, after snow removal work is performed using the above-mentioned working device, walls of snow remain on both sides where the snow was removed. Once such a wall of snow is formed, a so-called snow eave (e.g., a canopy of snow formed above the wall of snow) is formed above the snow wall due to subsequent new snow or displacement of the snowfall. If the above snow eaves are formed and become large, there is a risk of them falling downward.Therefore, if the above snow eaves are formed on the top of the snow wall on both sides of the road after snow removal work, it is necessary to remove them during snow removal work. .

<Objective of the Invention> The present invention has been made in view of the above-mentioned facts, and its main purpose is to provide a working device equipped with a snow eave cutting mechanism that removes the snow eaves as required.

<Summary of the Invention> According to the present invention, an earthmoving vehicle includes a support member attached to the front end, a working blade attached to the supporting member, and a snow eave cutter mechanism attached to the working blade, The snow eave cutter mechanism includes a snow eave cutter that removes snow cornices, and a fluid pressure cylinder mechanism that is provided between the working blade and the snow cornice cutter to rotate the snow cornice cutter, and the snow cornice cutter is , is mounted so as to be pivotable about a pivot axis located at one end of the working blade, and when in the operating position, the outer surface of the snow eave cutter substantially extends upward from the side surface of the one end of the working blade. The pivot axis of the snow eave cutter is inclined forward with respect to the horizontal direction, and when the snow eave cutter is in the non-working position, it extends laterally above the working blade, and when it is in the working position, the pivot axis line is inclined forward with respect to the horizontal direction. Provided is a working device equipped with a snow eave cutter mechanism, which is configured to extend upwardly from the working blade while being inclined forward in the front-rear direction.

<Preferred Specific Example of the Invention> Hereinafter, a specific example of a working device configured according to the present invention will be described with reference to the accompanying drawings.

In FIG. 1, a working device, generally designated by the number 2, is installed at the front end of an earthmoving vehicle 4, such as a wheeled loader, as shown in FIG. Illustrated working device 2
, a substantially triangular support member 6 and a working blade 8
The support member 6 is attached to the front end of the earthmoving vehicle 4 as required, and the working blade 8 is rotatably connected to the front end of the support member 6 via a connecting pin 10 (extending in the vertical direction). has been done. A pair of angle hydraulic cylinder mechanisms 12a and 12b are interposed between the support member 6 and the working blade 8. That is, one end side (rod side) of one fluid pressure cylinder mechanism 12a is connected to the working blade 8.
It is rotatably connected to a bracket 14 provided on the rear surface of one end side (the left end side of the working blade 8 and the lower side in FIG. 1) via a pin member, and the other end side (cylinder side) is connected to a support member. 6 (lower side in FIG. 1) via a pin member (not shown). In addition, one end side (rod side) of the other fluid pressure cylinder mechanism 12b is attached to a bracket 16 provided on the other end side of the working blade 8 (the right end side of the working blade 8 and the upper side in FIG. 1). It is rotatably connected via a pin member, and the other end side (cylinder side) is rotatably connected to the other side (upper side in FIG. 1) of the support member 6 via a pin member (not shown). . With this configuration, the fluid pressure cylinder mechanism 12a
(or 12b) is extended and the hydraulic cylinder mechanism 12b (or 12a) is contracted, the working blade 8 is
As shown in FIG. 2, the connecting pin 10 is pivoted in the direction shown by the arrow 18 (or 20).

The illustrated working device 2 further includes a snow eave cutter mechanism 2.
2. Referring to FIG. 2 together with FIG. 1, the illustrated snow eaves cutter mechanism 22 is a
4 and a cutter support member 26. As shown in FIG. 1, the snow eaves cutter 24 has a substantially triangular cross section, and its inner surface 24a (as described later, the surface that acts on the removed snow eaves) faces rearward in the front-rear direction (left-right direction in FIG. 1). Preferably, it slopes inward. The cutter support member 26 is composed of a block-shaped member, and its base is connected to a pair of brackets 28a and 28b provided on the upper plate 8a of the working blade 8 with a connecting pin 30 (which forms the pivot axis of the snow eave cutter 24). ).

In the illustrated example, the snow eave cutter 24 and the cutter support member 26 are connected via an angle adjustment means 32. Mainly referring to Figure 2,
The illustrated angle adjustment means 32 is the cutter support member 26
It includes a support plate 34 fixed to the tip of the snow eaves cutter 24 and a connecting plate 36 fixed to the base end of the snow eaves cutter 24. The support plate 34 is constituted by a sector-shaped plate member, and in a specific example, one through hole (not shown) is formed at one end, that is, an arcuate portion. Further, the connecting plate 36 is also composed of a fan-shaped plate member, and one end thereof, that is, an arcuate portion, has three through holes 38 in the specific example.
a, 38b and 38c (Figures 3-A and 3-B
(see also figure) is formed. and,
The support plate 34 and the connection plate 36 have their other ends (rear end side in FIGS. 1 and 2) connected to the connection pin 4.
The connecting plate 36 is connected to a through hole which is rotatably connected to the connecting plate 36 through the support plate 34 and has one end (the arcuate portion on the front end side in FIGS. 1 and 2) formed in the support plate 34.
It is connected by a combination of a bolt 42 and a nut (not shown) through one of the through holes 38a, 38b, and 38c formed in the. That is, the third
- As shown in Figure A, the snow eaves cutter 24 is connected as required by passing bolts 42 through the through holes (not shown) formed in the support plate 34 and the through holes 38a formed in the connecting plate 36. It is held at the first angular position (the angular position shown in FIG. 3-A), and as shown in FIGS. By passing the bolt 42 through the formed through hole 38b and connecting as required,
The snow eave cutter 24 is held in the second angular position (the angular position shown in FIGS. 1 and 2), and also in the third-B
As shown in the figure, the snow eaves cutter 24 can be connected to the third (the angular position shown in Figure 3-B). In order to prevent damage to the snow eaves cutter 24 due to excessive load, a tension bolt that will break when a predetermined shearing force is applied instead of the bolt 42, or a predetermined shearing force instead of the bolt 42 and nut combination. It is preferable to use shear pins that break when exposed to the action of. Further, in the specific example, one through hole is provided in the support plate 34, and a plurality of through holes (three in the specific example) are provided in the connecting plate 36.
The through-holes 38a, 38b, and 38c are provided, but conversely, a plurality of through-holes may be provided in the support plate 34 and one through-hole may be provided in the connection plate. A plurality of through holes may be provided in both the plate 34 and the connecting plate 36.

In the illustrated example, the snow eaves cutter mechanism 22
further includes a fluid pressure cylinder mechanism 44 for rotating the snow eaves cutter 24 described above.
The fluid pressure cylinder mechanism 44 has one end side (rod side)
is rotatably connected to a bracket (not shown) provided on the inner surface of the cutter support member 26 via a pin member (not shown), and the other end side (cylinder side)
are rotatably connected to brackets 46a and 46b provided on the upper plate 8a of the working blade 8 via a pin member 48. Therefore, the above-mentioned snow eaves cutter 24 has a fluid pressure cylinder mechanism 44.
When the arrow 5 is extended, the arrow 5 is centered around the connecting pin 30.
The hydraulic cylinder mechanism 44 is rotated in the direction shown by 0 (Fig. 2) and held at the working position (the position shown in Figs. 1 to 3) with its tip side extending upward from the working blade 8, and the hydraulic cylinder mechanism 44 is contracted. and connecting pin 3
0 in the direction shown by an arrow 52 (FIG. 2), and the distal end thereof is held in a non-operating position extending above the working blade 8 in its lateral direction (that is, in the longitudinal direction of the working blade 8). Ru.

In the snow eave cutter mechanism 22 described above, the pivot axis 54 of the snow eave cutter 24 is as shown in FIGS.
As shown in the figure, it is preferable that the working blade 8 is present at one end, and by configuring it in this way, the outer surface 24b of the snow eaves cutter 24 (FIGS. 1 and 2)
When the blade is in the operating position, it substantially extends upward from one side of the working blade 8, that is, from the surface of the side plate 8b, and thus removes the snow eaves formed on the snow wall as required, as will be described later. can do. In addition, the above-mentioned snow eave cutter 24
It is preferable that the turning center axis 54 of the turning center is inclined slightly forward with respect to the horizontal direction 56, and the forward inclination angle θ of the turning center axis 54 with respect to the horizontal direction 56 is 20 to 25 degrees. When the snow eaves cutter 24 is in the non-operating position, it extends in the horizontal direction, that is, in the longitudinal direction, above the working blade 8, but when it is in the working position, it is slightly inclined forward in the front-back direction from the working blade 8. Thus, when removing the snow eaves, the cut snow eaves can be dropped in front of the working surface 8c of the working blade 8 as required.

In the specific example, the snow eave cutter 24 is connected to the working blade 8 via the cutter support member 26 in order to make the angle position of the snow eave cutter 24 freely adjustable, but when the above-mentioned angle adjustment is not required, , the snow eave cutter 24 can be directly connected to the working blade 8 in a freely pivotable manner as described above.
In such a case, one end side (rod side) of the fluid pressure cylinder mechanism 44 may be directly connected to the snow eave cutter 24 so as to be able to freely turn, and the base of the snow eave cutter 24 may be provided with a structure to prevent undercutting of the snow wall surface during snow removal. Therefore, it is preferable to provide an L-shaped hinge.

Next, mainly Fig. 1, Fig. 3-A and Fig. 3-
The effects of the above-mentioned working device 2 will be explained with reference to Figure B.

When the fluid pressure cylinder mechanism 44 is extended and the snow eave cutter 24 is held in the above-mentioned operating position (the position shown in FIGS. 1 to 3), the snow eave cutter 24 is moved forward and backward from the working blade 8, as described above. (In the specific example, since the cutter support member 26 is present, the cutter support member 26 extends from the upper surface of the upper plate 8a of the working blade 8, and the snow eaves cutter 24 extends from the cutter support member 26. is extended). Therefore, when the earthmoving vehicle 4 equipped with the above-mentioned working device 2 moves forward, the working blade 8 acts on the snow existing on the upper surface of the road, etc., and the snow eaves cutter 24 acts on the upper part of the snow wall on the side of the road etc. Thus, said snow eave is cut by the snow eave cutter 24 and removed as required. In the specific example, since the snow eave cutter 24 is slightly inclined forward in the front-rear direction at the operating position, the snow cut by the snow eave cutter 24 falls in front of the working surface 8c of the working blade 8. Therefore, the fallen snow can be efficiently removed together with the snow accumulated on the road by the action of the working blade 8. In the specific example, the inner surface 2 of the snow eave cutter 24 is also
4a is inclined inward toward the rear in the front-rear direction, so that the snow removed by the snow eaves cutter 24 is directed along the inner surface 24a toward the width direction, that is, the longitudinal center of the working blade 8. tends to fall.

When cutting a snow eave with the snow eave cutter 24 described above, the snow eave cutter 24 is cut at a predetermined angle with respect to the snow wall surface existing on the side of the road, etc., that is, with its outer surface 24b facing the snow wall surface. It is desirable to hold them so that they are substantially parallel (in other words, substantially parallel to the front-rear direction). In connection with this, when the working blade 8 is held in a direction perpendicular to the front-rear direction (as shown in FIG. 1), the snow eaves cutter 24 is The second angular position shown in FIG. 2 (the bolt 42 is inserted into the through hole formed in the support plate 34 and the through hole 38b formed in the connecting plate 36)
It is preferable to hold the snow eave cutter 24 in such a manner that the outer surface 24b of the snow eave cutter 24 is held substantially parallel to the snow wall surface. Further, when the fluid pressure cylinder mechanism 12a is extended and the fluid pressure cylinder mechanism 12b is contracted, the working blade 8 is in the state shown in FIG. 3-A (that is, the working blade 8 is angled to the right). sometimes,
It is desirable to hold the snow eaves cutter 24 in the first angular position shown in FIG. By doing so, the outer surface 24b of the snow eaves cutter 24
is held substantially parallel to the snow wall. On the other hand, the fluid pressure cylinder mechanism 12a is contracted and the fluid pressure cylinder mechanism 12b is expanded to
When the working blade 8 is in the state shown in FIG. It is desirable to insert the bolts 42 into the through holes formed in the plate 34 and the through holes 38c formed in the connecting plate 36. held substantially parallel to the

On the other hand, when the fluid pressure cylinder mechanism 44 is contracted and the snow eave cutter 24 is held in the non-operating position, the snow eave cutter 24 moves above the working blade 8 in its lateral direction, that is, in its longitudinal direction, as described above. It is extended and retracted as required above the working blade 8. Therefore, since the snow eave cutter is not in an upright position, safety when not in use is significantly improved. Furthermore, it no longer obstructs the driver's visibility while driving, which also improves safety. Since the snow eave cutter is folded above the working blade 8 along its longitudinal direction, the appearance is also improved.

Although a specific example of a working device equipped with a snow eave cutter mechanism configured according to the present invention has been described above, the present invention is not limited to such a specific example, and without departing from the scope of the present invention. Various changes and modifications are possible.

For example, if desired, a fall prevention plate of a desired shape may be provided on the inner surface 24a of the snow eave cutter 24 to prevent the removed snow from falling behind the working blade 8.

Further, in order to protect the snow eaves cutter 24, a damper means made of a rubber member or the like is interposed between the working blade 8 and the cutter support member 26, or between the connecting pin 30 and the cutter support member 26. Good too. In such a case, it is desirable to connect the other end of the fluid pressure cylinder mechanism 44 via a ball joint.

[Brief explanation of drawings]

FIG. 1 is a simplified plan view showing an earthmoving vehicle equipped with a specific example of a working device constructed in accordance with the present invention. FIG. 2 is an enlarged perspective view showing a connecting portion between the working blade and the snow eaves cutter of the working device shown in FIG. 1;
3-A and 3-B are simplified plan views showing the working blade of the working device shown in FIG. 1 when it is angled to the right and left sides, respectively. 2... Working device, 4... Earthmoving vehicle, 6... Support member, 8... Working blade, 22... Snow eave cutter mechanism, 24... Snow eave cutter, 26... Cutter support member, 44... Fluid pressure cylinder mechanism.

Claims (1)

[Scope of Claims] 1. A snow eave cutter comprising: a support member attached to the front end of an earthmoving vehicle; a working blade attached to the support member; and a snow eave cutter mechanism attached to the work blade. The mechanism includes a snow eave cutter for removing snow eaves, and a fluid pressure cylinder mechanism provided between the work blade and the snow eave cutter to rotate the snow eave cutter, and the snow eave cutter is used for the work. The snow eave cutter is mounted so as to be able to rotate about a pivot axis located at one end of the working blade, and when in the operating position, the outer surface of the snow eave cutter substantially extends upward from the one end side surface of the working blade; The pivot axis of the snow eave cutter is inclined forward with respect to the horizontal direction, and when the snow eave cutter is in the non-operating position, it extends laterally above the working blade, and when it is in the operating position, it extends laterally above the working blade. A working device equipped with a snow eaves cutter mechanism, characterized in that the blade is configured to extend upwardly from the blade in a forward and backward direction. 2. A working device equipped with a snow eave cutter mechanism according to claim 1, wherein the forward inclination angle of the pivot axis of the snow eave cutter with respect to the horizontal direction is 20 to 25 degrees. 3. The snow eave cutter mechanism further includes a cutter support member, the cutter support member is rotatably attached to the working blade, and the snow cornice cutter is connected to the cutter support member via an angle adjustment means. ,
A working device equipped with a snow eave cutting mechanism according to claim 1 or 2, wherein the hydraulic cylinder mechanism is interposed between the cutting supporting member and the working blade. 4. The angle adjustment means includes a support plate fixed to the tip of the cutter support member and a connection plate fixed to the base end of the snow eave cutter, and the angle adjustment means includes a support plate fixed to the tip of the cutter support member and a connection plate fixed to the base end of the snow eave cutter, and a is formed with at least one through hole, and a plurality of through holes are formed in the other end of the support plate and the connection plate, and the other end of the support plate and the connection plate is rotatable. and the one end is connected as required through the at least one through hole formed in the one end and one of the plurality of through holes formed in the other end. , A working device comprising the snow eave cutter mechanism according to claim 3.