JP2598463Y2 - Bucket hand for construction machinery for lip wrapping - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bucket hand mounted on the tip of an arm of a construction machine such as a power shovel, and more particularly to a bucket hand for a construction machine which is most suitable for a lip wrapping work.

[0002]

2. Description of the Related Art Generally, makeup called a lip wrapping work is applied to the upstream and downstream surfaces of a rock fill dam. Rip wrapping is a method of uniformly laying rocks having a diameter of about 1 m and having a grain size of 10 m.
cm is a work to embed small rocks manually.
A hydraulic excavator is used to spread m (rock wrap) rocks. That is, the temporarily placed lip wrap materials are placed one by one on a bucket of a power shovel, moved to a predetermined position, and then slowly tilted while shaking the bucket to spread the lip wrap materials on the slope.

[0003] The above-mentioned lip wrapping work has the following problems. First, scooping a lip wrap material having a large diameter and rolling easily in a bucket and putting it in the bucket is a task that requires a considerable amount of labor and time even for a skilled person. Second, when the lip wrap material loaded on the bucket is placed at a predetermined position on the slope, the bucket must be slowly tilted while rocking, which takes time and effort, and at the same time, the lip wrap material comes off the bucket and There is a risk of rolling down the surface.

[0004] On the other hand, as a bucket hand for a construction machine, there is known a bucket hand provided with a fork capable of holding an article between the bucket and a bucket hand (Japanese Patent Laid-open No. Hei 4-93424).
Publication), the bucket hand has not only a function of scooping up earth and sand, but also a function of grasping an object. However, even though this bucket hand can grip the lip wrap material, it does not have a function of positioning a heavy and easily rolling object such as the lip wrap material at a predetermined position.

[0005] Attachments for power shovels for removing boulders are also commercially available, and it is conceivable to carry out lip wrapping work using this attachment. It is not supposed to be put in. Therefore,
Even if picking up the lip wrap material is quick, the attachment must be shaken when placing it, which is a tedious and dangerous operation. Also, this attachment has no excavation function.

[0006]

[Purpose of the Invention] The present invention is intended for safe and quick construction with attachments suitable for lip wrapping work, excavation of a slope, gripping, transporting, and emplacement of lip wrapping material associated with lip wrapping work. It is an object of the present invention to provide a construction machine bucket hand capable of performing each of the above operations safely and efficiently.

[0007]

A bucket hand of a construction machine for lip wrapping work according to the present invention is provided between a bucket attached to the tip of an arm of the construction machine and a base of the bucket so as to be openable and closable. A bucket hand comprising a fork capable of holding a lip wrap material, comprising: a stone discharging plate that moves forward and backward by driving a hydraulic cylinder on a bottom surface in the bucket, and loosens a holding force of the fork while gripping the lip wrap material. The lip wrap material can be pushed out of the bucket by the stone discharging plate.

[0008]

The work of excavating and shaping the construction surface by the above-mentioned bucket hand is performed in a state where the stone slab is stored in the bucket and the fork is opened. The lip wrap is opened and grasped between the bucket and the fork, and then the lip wrap is transported with the fork closed. The stationary work of the lip wrap material, while relaxing the clamping force by the fork,
The hydraulic cylinder for the stone slab is driven to push out the lip wrap material from the inside of the bucket by the stone slab and fixed at a predetermined position.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a bucket hand 10 for a power shovel, and FIG. 2 is a side view of the bucket hand 10.

A bucket 16 is attached to a tip end of the arm 12 via a support shaft 14, and is connected to a base bottom surface of the bucket 16 via a link 18 by a hydraulic cylinder 20 provided at a lower portion of the arm 12. The mounting angle of the bucket 16 can be changed. When used as a lip wrap, the size of the bucket 16 is approximately 1 m to 1.5 m in both length and width, and the depth of the bucket 16 is relatively shallow, about 50 cm. Is equipped with a claw 22 for excavation.

A fork 24 having a size corresponding to the size of the bucket 16 is provided on the upper surface of the bucket 16. In this embodiment, the fork 24 is formed by opposing a frame whose side is bent in the shape of a letter "ku" and forms the fork 24. However, the shape of the fork 24 is not limited to this. Any shape is acceptable. The fork 24 is attached to the upper portion of the base of the bucket 16 via a pin 26, and a column 28 protruding from the upper surface of the base of the bucket 16 and a rib 3
The fork 24 is opened and closed by a hydraulic cylinder 32 connecting between the fork 24 and the zero.

Inside the bucket 16, there is provided a stone discharging plate 40 which moves forward and backward on the bottom surface of the bucket 16 by driving the hydraulic cylinders 38,38. The stone discharging plate 40 has a horizontally long rectangular shape with a concave front surface, and has a size to be stored in the bucket 16. Hydraulic cylinder 38 is a stone slab 40
By being attached to the base of the bucket 16 on the rear side of the bucket, it is protected from damage due to collision with rocks or the like.

Next, a lip wrapping work using a power shovel equipped with the bucket hand 10 will be described with reference to a construction procedure diagram shown in FIG.

(A) First, the lip wrapping work surface 42 is shaped by the bucket 16 of the bucket hand 10. At this time, the fork 24 is in the open state, the stone discharging plate 40 is stored in the bucket 16 in the retreated state, and the construction surface 42 is excavated by the claw 22 of the bucket 16.

(B) After shaping the lip wrapping work surface 42, the bucket hand 10 is turned to grip the lip wrap material (rock) 44 between the bucket 16 and the fork 24.
After placing the lip wrap 44 on the bucket 16, the fork 24 is closed and the lip wrap 44 is clamped by the bucket hand 10.

(C) Put the lip wrap material 44 on the fork 24
While holding down, the bucket hand 10 is turned and reversed to move to a predetermined position on the construction surface 42.

(D) Hydraulic cylinders 38, 38
Is driven to extend the piston shaft and advance the stone discharging plate 40. In this way, the lip wrap material 44 is extruded from the inside of the bucket 16 and is accurately positioned at a predetermined position on the construction surface 42.

In the above embodiment, various modifications are possible, such as the shape of the stone discharging plate 40, the number of hydraulic cylinders 38, and the like. In this embodiment, the fork 24 is
Although it is one-sided, it may be a double-sided configuration.

[0019]

[Effect of the Invention] The bucket hand of the construction machine for lip wrapping work according to the present invention is provided with a lithotrip that moves forward and backward by driving a hydraulic cylinder, so that the slope is excavated and the lip wrapping material is gripped by the lip wrapping work. , Transportation, and stationary work can be performed safely and efficiently. That is, rocks that easily roll can be efficiently picked up by pressing them with a fork, and when the rocks are placed on the slope, the rock removal plate can be pushed out, and the rocks can be safely placed in a predetermined position without shaking the bucket. Further, it is possible to easily cope with a shaping excavation work on a lip wrap construction surface.

[Brief description of the drawings]

FIG. 1 is a perspective view of a bucket hand for a power shovel.

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

FIG. 3 is a construction procedure diagram of a lip wrapping work using a power shovel to which the bucket hand is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Bucket hand 16 Bucket 22 Claw 24 Fork 32 Hydraulic cylinder for opening and closing fork 38 Hydraulic cylinder for stone slab 40 Stone slab

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-93424 (JP, A) JP-A-48-59604 (JP, A) JP-A-62-26492 (JP, U) JP-A 48-59 18002 (JP, Y1) Jiko 52-55842 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02F 3/407 E02F 3/40

Claims (1)

(57) [Scope of request for utility model registration] 1. A bucket attached to the tip of an arm of a construction machine, and a bucket attached to a base of the bucket so as to be openable and closable,
A bucket hand comprising a fork capable of sandwiching a lip wrap material between the bucket and the bucket, comprising a stone discharging plate that moves forward and backward by driving a hydraulic cylinder on a bottom surface in the bucket, and grips the lip wrap material. State of the fork
The lip wrap material is released by the stone discharging plate while relaxing the holding force.
Can be pushed out of the bucket
Lip wrap Engineering for construction machinery bucket hand.