JP3082967U - Bucket device - Google Patents

Abstract

(57) [Problem] To provide a bucket device that has good soil removal, can smoothly discharge the housed contents, has a simple shape, and has a small number of parts. SOLUTION: The bucket device includes a bucket body 21 having a front surface opened by a bottom plate 22 and left and right side plates 23, and an excavation plate 27 continuous with the bottom plate 22 and protruding from the bucket body 21. The groove is excavated by excavating a deep part of the groove with the excavation plate 27 and excavating a shallow part of the groove with the bucket body 21.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a bucket device mounted on a working machine such as a hydraulic excavator, and more particularly, to a bucket device which can be suitably used for excavating a narrow groove such as an intake channel for drainage of a culvert.

[0002]

[Prior art]

 Underdrainage drainage is being implemented to improve drainage in fields and the like. In this underdrainage drainage work, for example, a narrow water intake channel having a width of 20 cm and a depth of 1 m is excavated, and an intake pipe is laid at the bottom of the excavated water intake channel. On top of that, a hydrophobic material is poured to a predetermined depth, and backfill soil is put on the hydrophobic material and backfilled.

[0003] A hydraulic excavator is generally used for excavation of the above-mentioned narrow intake culvert. The hydraulic excavator is mounted with a narrow bucket device having a smaller bucket width than a normal excavating bucket device. In other words, a narrow bucket device that fits the width of the narrow intake channel described above will be installed.

[0004] As described above, when an intake channel is excavated with a bucket device having a small bucket width, soil contained in the bucket device is easily clogged and adhered to the bucket device due to the narrow bucket width. Bad soil removal. For this reason, when the opening of the bucket device is discharged downward, the soil contained in the bucket device is not easily discharged. This is more pronounced in soils with a higher water content.

A bucket device that solves this problem is disclosed in, for example, Japanese Patent Application Laid-Open No. 2000-273897. This bucket device has a shape in which the bucket bottom plate of the bucket body is swingable. When discharging the soil stored in the bucket body, the bucket bottom plate is swung to the opening of the bucket body to remove the stored soil. Forcibly discharge from the opening.

[0006]

[Problems to be solved by the invention]

 Since the above-mentioned bucket device is provided with a swingable bucket bottom plate and a link mechanism for swinging the bucket bottom plate, it is an expensive bucket device having a complicated structure, a large number of parts, and a large number of parts.

The present invention has been made to solve the above-mentioned problem. A first object of the present invention is to provide a bucket device capable of easily removing stored soil from soil and discharging the stored soil smoothly. A second object of the present invention is to provide an inexpensive bucket device having a simple structure, a small number of parts and a small number of components.

[0008]

[Means for solving the problem and functions and effects]

 The first invention is a bucket device comprising a bucket body 21 and a digging plate 27 which is continuous with the bottom plate 22 of the bucket body 21 and protrudes from the bucket body 21.

According to the first invention, a deep portion of the groove is excavated by the excavation plate 27, and the excavated soil is accommodated in the bucket body 21 while sliding along the excavation plate 27. The shallow portion of the groove is excavated by the bucket body 21, and the excavated soil is stored in the bucket body 21. Therefore, the soil having a high water content contained in the bucket main body 21 does not easily adhere to the inside of the bucket main body 21. Moreover, the bucket body 21 is smaller than the depth of the groove to be excavated. Together, the soil stored in the bucket body 21 can be easily removed from the soil, and the stored soil can be smoothly discharged.

In addition, since the bucket body 21 and the digging plate 27 are used, the bucket body has a simple shape and a small number of parts. Therefore, it is an inexpensive bucket device.

The second invention is a bucket device in which the width of the tip of the bottom plate 22 of the bucket body 21 and the width of the excavation plate 27 are substantially the same in the first invention.

According to the second invention, the soil excavated by the excavation plate 27 smoothly slides along the entire width of the excavation plate 27 to the tip of the bottom plate 22, and is excavated by the excavation plate 27. Is smoothly and securely accommodated in the bucket body 21.

Further, the boundary between the deep part of the groove excavated by the excavation plate 27 and the shallow part of the groove excavated by the bucket body 21 is continuous, and a groove can be excavated from the deep part to the shallow part.

A third device is a bucket device in which reinforcing ribs are fixedly attached to the back surface of the bottom plate 22 and the back surface of the excavation plate 27 in the first or second device.

According to the third invention, the bottom plate 22 and the excavation plate 27 themselves are reinforced by the reinforcing plate, and the excavation plate 27 is firmly fixed to the bottom plate 22. Therefore, the bucket device can withstand heavy excavation work.

[0016]

[Embodiment of the invention]

 As shown in FIG. 1, a work machine 1 includes a lower vehicle body 3 having a traveling body 2, an upper vehicle body 4 pivotally mounted on the lower vehicle body 3, and a vertically swingable mounting on the upper vehicle body 4. A boom 5 and an arm 6 connected to the boom 5 so as to be vertically swingable. The boom 5 swings up and down by expanding and contracting a boom cylinder 7. The arm 6 swings up and down by expanding and contracting an arm cylinder 8. In the embodiment, the work machine 1 is a hydraulic shovel.

A turning device 9 is mounted on the tip of the arm 6 so as to be vertically rotatable. This turning device 9 is turned up and down by a bucket cylinder 10 and a link 11. The turning device 9 includes a mounting portion 9a, a turning portion 9b, and a turning hydraulic motor 9c. By driving the turning hydraulic motor 9c, the turning portion 9b turns with respect to the mounting portion 9a. The mounting portion 9a is mounted on the tip of the arm 6, and the bucket device 20 according to the present invention is mounted on the turning portion 9b. The bucket device 20 may be mounted on the tip of the arm 6 so as to be vertically rotatable without using the turning device 9, and may be vertically rotated by the bucket cylinder 10 and the link 11.

The shape of the bucket device 20 will be described with reference to FIG. 2, FIG. 3, and FIG. The bucket body 21 has an opening 24 on the front surface by a bottom plate 22 and left and right side plates 23, and cutting edges 25 are fixed to the left and right side plates 23, respectively. The bottom plate 22 has a substantially C-shaped side surface including a linear base end portion 22a, an arc-shaped intermediate portion 22b continuous with the base end portion 22a, and a linear distal end portion 22c continuous with the intermediate portion 22b. Shape. The front shape of the bottom plate 22 is a substantially trapezoidal shape in which the base end is wide and the width is gradually narrowed toward the front end. A pair of mounting brackets 26 are fixed to the base end portion 22a of the bottom plate 22.

The left and right side plates 23 are oblique so that the interval between the side edges 23 a of the opening 24 and the interval between the side edges 23 b of the bottom plate 22 are wide with respect to the posture parallel to each other. That is, the left and right side plates 23 are expanded toward the opening 24 and fixed to the bottom plate 22.

A drilling plate 27 is fixed to the bottom plate 22. The excavation plate 27 has a rectangular shape having the same width as the tip of the bottom plate 22, is continuous with the tip of the bottom plate 22, and protrudes from the bucket body 21. A pair of side reinforcing ribs 28 and an intermediate reinforcing rib 29 are fixed to each other over the back surface of the bottom plate 22 and the back surface of the excavation plate 27 by welding or the like. As a result, the excavation plate 27 is firmly fixed to the bucket body 21, and the excavation plate 27 and the tip portion 22 c of the bottom plate 22 are reinforced.

The front shape of the bucket device 20 is substantially the same as the shape of the trench A to be excavated, which is indicated by a virtual line in FIG. The groove A is a suction conduit for drainage of a culvert, and as shown in FIG. 5, a lower groove B having a narrow rectangular cross section for laying a water absorption pipe a and an upper groove C having a funnel shape continuous with the lower groove B. Yes. The width H and the depth L of the lower groove C are substantially the same as the width and the length of the excavation plate 27. For example, the width H is 20 cm and the depth L is 50 cm. The depth L-1 of the lower groove B from the ground surface is about twice the depth L, for example, 110 cm. The upper groove C is excavated by the left and right side plates 23 (cutting edge 25) of the bucket body 21.

The culvert drainage construction is performed as follows. The aforementioned groove A is excavated. The water absorption pipe a is laid in the lower groove B of the groove A. A hydrophobic material b such as a shell of a scallop is poured onto the water absorbing pipe a to a depth of the lower groove B. The backfill soil c is put on the hydrophobic material b and backfilled. As described above, when culvert drainage is performed, the worker enters the groove A and lays the water absorption pipe a. However, if the width H of the lower groove B is as small as 20 cm, the worker enters the groove A and the water absorption pipe a. It is difficult to lay a. For this purpose, the upper groove C is formed into a funnel shape so that an operator can easily enter the groove A and lay the water absorbing pipe a.

If the width H of the lower groove B is wide enough to allow a worker to enter and lay the water absorption pipe a, the upper groove C may have the same width as the lower groove B. That is, the groove A may have the same width from the ground surface to the bottom. In this case, the bottom plate 22 forming the bucket body 21 of the bucket device 20 may have the same width over the entire length, and the left and right side plates 23 may be parallel to each other.

Next, an operation of excavating the trench A will be described. While the work machine 1 is running, the boom 5 and the arm 6 are directed in the groove excavation direction, and the bucket device 20 is positioned when excavating the groove. As shown in FIG. 6A, the arm 6 is swung in the direction of arrow a (downward), and the bucket device 20 is turned in the direction of arrow b (downward) to form an arc-shaped groove having the same cross-sectional shape as the groove A. Excavate D.

As shown in FIG. 6B, the excavation plate 27 is aligned with the bottom of the excavated arc-shaped groove D. The excavation plate 27 is inclined with respect to the vertical. That is, the rake angle θ is provided. In this state, the bucket A is linearly moved in the direction of arrow c to excavate the groove A linearly. For example, the boom 5 and the arm 6 are moved downward, and the bucket device 20 is pivoted downward to linearly move the excavation plate 27 to excavate the groove A. At this time, the lower groove B is excavated by the excavation plate 27, and the excavated soil is accommodated in the bucket body 21 while sliding along the surface of the excavation plate 27.

When the bucket device 20 has been moved an arbitrary distance as shown in FIG. 6C as described above, the bucket device 20 is rotated in the direction of arrow b, and the excavation plate 27 is moved along the arc trajectory E shown by a one-dot chain line. The earth and sand excavated by rotating (scooping operation) along are stored in the bucket body 21.

While turning the upper body 4, the boom 5 and the arm 6 are swung upward, and the bucket device 20 is moved onto a truck bed near the work machine 1. The bucket device 20 is discharged (rotated in the direction opposite to the arrow b) to discharge the soil contained in the bucket body 21 to the truck bed. Instead of discharging to the truck bed, it may be discharged to the side of the excavated groove A and deposited.

After that, the above-described excavation operation of FIGS. 6B and 6C is repeated. When the straight excavation distance of the bucket device 20 reaches the limit, the work machine 1 is run.

When the groove A is excavated by a predetermined distance as described above, the water absorption pipe a is laid, the hydrophobic material b is charged, and the backfill soil c is backfilled as shown in FIG. At this time, the surface of the backfilled soil is evenly leveled with the back surface of the bucket device 20 (the back surface of the excavation plate 27 and the reinforcing rib fixed to the back surface of the bottom plate 22).

The trench excavation operation using the bucket device 20 according to the present invention is not limited to the above-described excavation operation, and can be excavated by any excavation operation.

As described above, the lower groove B of the groove A (that is, the deep part of the groove) is excavated by the excavation plate 27, and the soil is slid along the excavation plate 27 and stored in the bucket body 21. The upper groove C of the groove A (that is, a shallow portion of the groove) is excavated by the bucket body 21, and the soil is stored in the bucket body 21. Therefore, soil having a high water content, such as clayey soil or peat soil, stored in the bucket body 21 is less likely to adhere to the inside of the bucket body 21. Moreover, the length of the bucket body 21 in the depth direction is shorter than the depth of the groove to be excavated, and the bucket body 21 is smaller. Together, the soil stored in the bucket body 21 can be easily removed from the soil, and the stored soil can be smoothly discharged.

In the above description, the excavation of a groove having a rectangular bottom portion has been described. It is good.

[Brief description of the drawings]

FIG. 1 is a side view of a working machine provided with a bucket device according to the present invention.

FIG. 2 is a side view of the bucket device.

FIG. 3 is a front view of the bucket device.

FIG. 4 is a rear view of the bucket device.

FIG. 5 is a cross-sectional view of the culvert drainage construction state.

FIG. 6 is an explanatory diagram of a trench excavation operation.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Work machine, 5 ... Boom, 6 ... Arm, 20 ... Bucket device, 21 ... Bucket body, 22 ... Bottom plate, 23 ... Side plate, 24 ... Opening, 25 ... Cutting edge, 27 ...
Drilling plate, 28 ... side reinforcement ribs, 29 ... middle reinforcement ribs.

Claims (3)

[Utility model registration claims] An excavation plate (2) continuous with a bucket body (21) and a bottom plate (22) of the bucket body (21) and protruding from the bucket body (21).
(7) A bucket device comprising: 2. The bucket device according to claim 1, wherein the width of the tip of the bottom plate (22) of the bucket body (21) and the width of the excavation plate (27) are substantially the same. 3. The back of a bottom plate (22) and a drilling plate (2).
The bucket device according to claim 1 or 2, wherein a reinforcing rib is fixed over the back surface of (7).