JPH0529255Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a bucket as an attachment for an excavator, and mainly to a bucket used for stripping topsoil and forming slopes.

(Prior art) A slope bucket is used to finish a slope by hitting the surface with a bottom plate, but this slope bucket is used to form a road or slope into a curved surface Conventionally, when molding a slope surface that slopes in the left-right direction, the work was done by changing the direction of the bucket while moving the entire crawler traveling device.

(Problem that the invention aims to solve) However, with conventional slope buckets, the bucket rotates only in the front and rear directions, so it is difficult to shape the road surface or slope into a curved surface in the left-right direction or a slope in the left-right direction. To do this, the direction of the slope bucket must be changed for each crawler traveling device, which makes it impossible to perform continuous work and reduces work efficiency, and discontinuous work results in rough finished surfaces. Therefore, the finishing had to be done again later by hand, which caused the problem of inefficiency.

(Means for solving the problems) The present invention was devised to solve the problems of the prior art, and its purpose is to:
To provide a slope bucket which can be used for topsoil stripping and which allows the bottom plate of the bucket main body to be set at any angle by forming the bucket main body so that it can be rotated back and forth as well as from side to side.

As a technical means for this purpose, the present invention is formed of a bucket main body and an upper frame, and
In a slope bucket which is also used for topsoil stripping, in which the bottom plate of the bucket main body is formed of a single rectangular planar plate made of a seamless thick plate, and the tip edge of the bottom plate is formed at the excavation edge, the upper frame is the tip of the intermediate arm. The bottom plate is pivotally connected to the bottom plate so as to be rotatable in the front and back direction about a horizontal axis, and a corner is formed at the rear edge of the bottom plate between the bottom plate and the back plate, and the corner is pulled perpendicularly from the horizontal axis to the bottom plate. and a perpendicular line drawn from the rear end of the back plate at right angles to the bottom plate;
The bucket bag main body and the upper frame are pivotally connected to be rotatable in the left-right direction about a vertical axis perpendicular to the horizontal axis, and a left-right rotation means for the bag bag main body is provided between the bucket bag main body and the upper frame. A configuration is adopted in which hydraulically operated ram-shaped cylinders are connected in a V-shape on the left and right sides of the vertical axis.

(Function) Therefore, in the slope bucket of the present invention, which is also used for topsoil stripping, the top edge of the bottom plate of the bucket main body is formed to be the excavation edge, and the outer plane of the bottom plate is formed to be the slope forming surface, so that the topsoil stripping is possible. It is possible to perform excavation work such as grading, compaction, slope cutting, and other finishing work continuously without having to change from the conventional excavation bucket to a slope bucket, which is a hassle.
Improves work efficiency.

In addition, in the present invention, the corner formed on the rear edge of the bottom plate is formed to be located behind a perpendicular line drawn perpendicularly to the bottom plate from the horizontal axis, so that it is not formed into a curved surface from the bottom to the back as in the conventional case. This eliminates the problem of falling due to lack of pressure, like when hitting a bucket, and it is possible to hit the ball evenly on the entire surface of the bottom plate while applying pressure. This prevents seams from remaining on the molding surface or deforming the bottom plate.

In addition, the bucket body is designed to be able to rotate left and right as well as back and forth, so the outer plane, which is the slope forming surface, can be set at any angle without changing the direction of the crawler traveling device. It is possible to form surfaces that are curved to the left and right, and surfaces that are tilted to the left and right.
In addition, since the work can be continued without stopping, the finished surface is good and manual finishing work is no longer necessary, making it possible to perform topsoil finishing work on slopes extremely efficiently.

In addition, since a ram-shaped cylinder is used as a means for rotating the bucket main body from side to side, the cylinder will not be damaged even if an impact is applied to the bucket during operation, improving durability.

In addition, since two ram-shaped cylinders are used as the means for rotating the bucket main body left and right, the bucket can be formed into a compact and lightweight structure.

In addition, since the bucket body is supported at three points: the vertical shaft and two ram-shaped cylinders, it has excellent strength.
Moreover, work can be performed stably.

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

In the excavator A of this embodiment, a swivel base 2 is supported on a crawler traveling device 1, and a base end 7 of a main arm 6 that is rotated by a hydraulic cylinder 5 is pivotally attached to the tip of the swivel base 2. A base end 10 of an intermediate arm 9 which is rotatably operated by a hydraulic cylinder 8 is pivotally attached to the tip of the main arm 6, and a slope bucket which also serves as a work attachment is attached to the tip of the intermediate arm 9. It has a structure in which B is provided.

The slope bucket cart B used for topsoil stripping is composed of an upper frame 11 and a bucket main body 12.

The upper frame 11 is attached to the tip of the intermediate arm 9, and its mounting structure is such that a bracket 13 attached to the upper end of the upper frame 11 is pivotally attached to the tip of the intermediate arm 9 about a horizontal shaft 14, and A hydraulic cylinder 16 for swinging the topsoil stripping slope bucket B back and forth about the horizontal shaft 14 is provided on the intermediate arm 9, and a hydraulic cylinder 16 is provided between the hydraulic cylinder 16 and the intermediate arm 9 and between the hydraulic cylinder 16 and the hydraulic cylinder 16. The structure is such that links 17 and 18 are provided between the brackets 13, respectively.

Moreover, at the center of the lower end of the upper frame 11,
A left-right rotation bracket 20 is formed to attach a vertical shaft 19 perpendicular to the horizontal shaft 14, and one of hydraulically operated ram-shaped cylinders 21, 21 is mounted on a pin on either side of the vertical shaft 19 at the lower end of the upper frame 11. It is pivotally connected by 22, 22.

Next, the bucket main body 12 has an opening 29 surrounded by the tip edge 24 of the bottom plate 23, the upper edge 26 of the back plate 25, and the front edges 28, 28 of the left and right side plates 27, 27. The mounting structure is a bracket 3 attached to the upper end of the back plate 25.
0 is pivotally connected to the vertical axis 19 of the upper frame 11, and the other of the ram-shaped cylinders 21, 21 for swinging and rotating the bucket main body 12 left and right about the vertical axis 19 is attached to the back plate 25. Pins 32 and 3 are attached to the brackets 31 and 31 provided on the left and right sides, respectively.
It is pivoted by 2.

The bottom plate 23 is formed of one straight plate made of a thick plate with no seam from the leading edge 24 to the trailing edge 33, and the outer surface 15 of the bottom plate 23 is formed as a sloped surface. The leading edge 24 has an inclined upper surface and is formed as an excavator for stripping the topsoil, and the rear edge 33 has a back plate 2.
A corner 34 is formed between the corner 34 and the corner 34.
is located within the range of a perpendicular line C drawn perpendicularly to the bottom plate 23 from the horizontal axis 14 and a perpendicular line D drawn perpendicularly to the bottom plate from the rear end of the back plate.

In addition, 35 and 35 in the figure are left and right side plates 27 and 2.
These are side cutters formed on the front edges 28, 28 of 7. The hydraulic power source for the ram-shaped cylinder is used by switching the hydraulic circuit of the hydraulic cylinder 16 for swinging the bucket back and forth using a solenoid type directional control valve 42. Also, 36, 37 are check valves, 38, 3
9 is a bypass connected to the check valve; 4
0 is an extreme stopper, and 41 is a dustproof cover.

Next, the operation of this embodiment will be explained.

When using the slope bucket B for topsoil stripping of this embodiment for excavation work such as topsoil stripping, the tip edge 24 of the bottom plate 23 is formed as an excavator without claws, so it can be used to scrape off topsoil, etc. Can perform excavation work.

In addition, the outer plane 15 of the slope bucket B used for topsoil stripping
When used as a slope forming surface for slope forming work, a corner 34 is formed between the rear edge 33 of the bottom plate 23 and the back plate 25, and the corner 34 is located behind the perpendicular line C. Because of its position, it eliminates the problem of falling due to lack of pressure when the curved surface is continuous from the bottom to the back, and the slope bucket B, which is also used for stripping topsoil, causes the swing back and forth when hitting. It is possible to hammer evenly on the entire surface of the bottom plate 23 while applying pressure, and since the bottom plate 23 is formed of a single straight plate made of a seamless thick plate, the molding surface is There has never been a case where a seam is left behind or the bottom plate 23 is deformed.

Also, when forming the road surface, the slope may be tilted from side to side,
When forming a slope and inclining the slope from side to side, the hydraulic circuit is switched from the hydraulic cylinder 16 to the ram cylinder 21 by operating the solenoid type directional control valve 42 using a changeover switch (not shown) in the operator's cab. For example, this allows the bucket main body 12 to be aligned with the vertical axis 19.
The bottom plate 23 can be set at any angle by rotating left and right around the center. Note that the rotation in the left and right direction is limited by the limit stopper 40,
In this case, the oil pressure is bypass 38 or bypass 39
The oil is drained by the ram-shaped cylinder 21, thereby preventing a pressure increase inside the ram-shaped cylinder 21.

Although one embodiment of the present invention has been described above with reference to the drawings, the specific configuration of the present invention is not limited to the above-described embodiment, and the present invention may be modified without departing from the gist of the invention. It is included in the technical scope of the invention.

(Effects of the invention) As explained above, according to the invention, since it is configured as described above, excavation work such as topsoil stripping and finishing work such as slope leveling, compaction, and slope cutting can be carried out in the same manner as before. The work can be carried out continuously without the need for the troublesome task of changing from the excavation bucket to the slope bucket, improving work efficiency.

In addition, in the present invention, the leading edge of the bucket main body is formed as an excavation edge, so excavation work such as topsoil stripping can be performed with this, and the corner formed on the rear edge of the bottom plate can be used as an excavation edge. Since it is formed to be located forward of the perpendicular line drawn from the rear end to the bottom plate, this corner does not interfere with the soil surface during excavation work, allowing smooth excavation work such as stripping the topsoil. I can do it.

In addition, in the present invention, the corner formed on the rear edge of the bottom plate is formed to be located behind a perpendicular line drawn perpendicularly to the bottom plate from the horizontal axis, so that it is not formed into a curved surface from the bottom to the back as in the conventional case. This eliminates the problem of falling due to lack of pressure, like when hitting a bucket, and it is possible to hit the ball evenly on the entire surface of the bottom plate while applying pressure. This prevents seams from remaining on the molding surface or deforming the bottom plate.

In addition, the bucket main body is designed to be able to rotate left and right as well as back and forth, so the outer plane, which is the slope forming surface, can be set at any corner without changing the direction of the crawler traveling device. It is possible to form surfaces curved from side to side or sloped from side to side.
Furthermore, since the work can be continued without stopping, the finished surface is good and there is no need for manual finishing work, making it possible to perform topsoil finishing work on slopes extremely efficiently.

Furthermore, since a ram-shaped cylinder is used as the means for rotating the bucket main body from side to side, the cylinder will not be damaged even if an impact is applied to the bucket during operation, improving durability.

Furthermore, since two ram-shaped cylinders are used as the means for rotating the bucket main body left and right, the bucket can be made compact and lightweight.

In addition, since the bucket body is supported by three points: the vertical shaft and two ram-shaped cylinders, it has excellent strength.
Moreover, work can be performed stably.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a slope bucket for topsoil stripping according to an embodiment of the present invention, Fig. 2 is a side view of the bucket, Fig. 3 is an installation state diagram of the ram cylinder, and Fig. 4 is the hydraulic circuit of the bucket part. The explanatory diagram, FIG. 5, is an overall side view of the excavator. A...Excavator, B...Slope bucket for topsoil stripping, 9...Intermediate arm, 11...Upper frame,
12...bucket body, 14...horizontal axis, 15...
Outer plane, 19...vertical axis, 21...ram-shaped cylinder, 23...bottom plate, 24...tip edge.

Claims (1)

[Claims for Utility Model Registration] The bucket bag is formed of a bucket main body 12 and an upper frame 11, and the bottom plate 23 of the bucket bag main body 12 is formed of a single rectangular plate made of a seamless thick plate. In this slope bucket for topsoil stripping, the tip edge 24 of which is formed at the excavation edge, the upper frame 11 is pivotally attached to the tip of the intermediate arm 9 via a horizontal shaft 14 so as to be rotatable in the front-rear direction, and the bottom plate 23 The rear edge 33 has a back plate 25.
A corner 34 is formed between the horizontal axis 14 and the perpendicular line C drawn perpendicularly to the bottom plate 23 from the horizontal axis 14, and a perpendicular line D drawn perpendicularly to the bottom plate 23 from the rear end of the back plate 25.
Further, the bucket main body 12 and the upper frame 11 are pivotally connected to be rotatable in the left-right direction by a vertical axis 19 perpendicular to the horizontal axis 14, Between the bucket main body 12 and the upper frame 11,
This slope bucket can also be used for topsoil stripping, characterized in that hydraulically operated ram-shaped cylinders 21, 21, which serve as means for horizontally rotating the bucket main body 12, are connected in a V-shape on the left and right sides of the vertical shaft 19.