JPH0796793B2 - Reach type construction machine for construction machinery - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a reach type working machine for a construction machine, which is easy to work in a narrow space.

(Prior Art) Conventionally, a working machine mounted on a construction machine such as a power shovel has a structure in which a bucket is attached to an end of a boom that can be raised and lowered via an arm, and is mainly used for excavation and loading work.

(Problems to be solved by the invention) However, it is not possible to perform work in a narrow space with a conventional work machine, for example, for scraping ore that has fallen from under a belt conveyor used in steel mills, etc. In that case, the worker was scratching out with input, which caused heavy labor, and the worker was tired early.

The present invention has been made for the purpose of remedying such drawbacks, and an object of the present invention is to provide a reach type working machine for a construction machine which can easily work in a narrow space.

(Means and Actions for Solving the Problem) In order to achieve the above-mentioned object, the present invention provides a boom in which a working machine main body can be raised and lowered by a boom cylinder, and a first arm cylinder pivotally attached to the tip of the boom. A rotatable first arm, and a second arm pivotally attached to the tip of the first arm and rotatable by a second arm cylinder,
The work machine body is constructed by a bucket that is pivotally attached to the tip of the second arm and that is rotatable by a bucket cylinder, and a plurality of rods that form a four-bar parallel link between the boom and the first arm. It is detachably attached to the upper revolving structure of the machine.

By rotating the boom and the first and second arms, it is possible to reach the front without changing the posture of the bucket, which makes it easy to scoop ore or the like from a narrow place.

Embodiment An embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, reference numeral 1 is a construction machine, and an upper revolving structure 4 is rotatably provided on a lower traveling structure 3 which is freely revolvable by a crawler type suspension 2, and a work machine body 5 is provided in front of the upper revolving structure 4.
Is detachably attached as an attachment.

A bracket 8 is attached to a revolving member 7 which is revolvable by the working machine body 5 and a swing cylinder 6, and a base end portion of a boom 10 is pivotally attached to an intermediate portion of the bracket 8 via a pin 9.

The boom 10 has a boom cylinder 11 provided between one end side of the bracket 8 and the tip end side of the boom 10 so that the tip end side thereof is rotatable around the pin 9 and the tip end portion of the boom 10 has a first part. A bent portion of a link 13 which is substantially V-shaped with the upper end side of the arm 12 is pivotally attached by a pin 14.

A first arm cylinder 15 is provided between the upper end of the first arm 12 and the bracket 8, and a rod 16 is provided between one end of the link 13 and the bracket 8 so as to be parallel to the boom 10. At the same time, at the lower end of the first arm 12, one of the corners on the bottom side of a bracket 17 formed in a substantially triangular shape is pivotally attached by a pin 18.

A rod 19 is provided between the apex of the bracket 17 and the other end side of the link 13 so as to be parallel to the first arm 12, and the base end of the second arm 20 is provided on the other side of the bottom side of the bracket 17. The department is pivotally attached.

A bracket 20a is projectingly provided at an intermediate portion of the second arm 20, and a second arm cylinder 21 is provided between the apex of the bracket 20a and the apex of the bracket 17, and
A bucket 22 is pivotally attached to the tip of the second arm 20 by a pin 23, and a bucket cylinder 24 is provided between the bucket 22 and the bracket 22a.

Next, the ore that has fallen from the conveyor 26 that transports the ore in a steel mill or the like is scooped out from under the conveyor 26 and the conveyor 26
Explaining the work for returning to the upper position, first, from the posture shown in FIG. 1, the boom cylinder 11 rotates the upper end side of the boom downward around the pin 9, and at the same time shortens the first arm cylinder 15 and 1 Push the arm 12 forward.

Since the boom 10 and the rod 16 and the first arm 12 and the rod 19 each form a four-bar parallel link, the second arm 20 and the bucket 22 are in a height and horizontal state as shown in FIG. Reach forward while maintaining
The bucket 22 attached to the end of the arm 20
Is inserted below the conveyor 26 and drops from the conveyor 26
Bucket 22 scoops up the ore deposited under 26.

After that, the first arm cylinder 15 is extended to erect the first arm 12, and at the same time, the boom cylinder 11 also erects the boom 10 to return the second arm 20 and the bucket 22 to the position shown in FIG. The cylinder 21 raises the tip end side of the second arm 20 to the position shown in FIG.

Then, while further rotating the boom 10 rearward from this state, the lower end of the first arm 12 is pushed forward, so that the bucket 22 provided at the tip of the second arm 20 reaches above the conveyor 26. By dumping the bucket 22 with the cylinder 24, the ore in the bucket 22 can be loaded on the conveyor 26.

By repeating the above operation, the ore etc. scooped up from a narrow place such as under the conveyor 26 is again conveyed.
You will be able to load it on 26.

Further, since the working machine body 5 is detachably attached to the construction machine as an attachment, it is needless to say that the excavating and loading work can be carried out normally by replacing the working machine body 5 with a conventional working machine.

(Effects of the Invention) As described in detail above, since the bucket can reach the front without changing the posture of the bucket, it is possible to easily scoop out ore or the like from a narrow place such as under a conveyor.

As a result, the work in a small space, which was conventionally done manually, can be done by the construction machine, so that the work efficiency is greatly improved and the labor can be saved.

Also, because it can be attached to construction machinery as an attachment,
There is almost no need to modify construction machinery, and normal excavation and loading work can be performed by replacing it with conventional work equipment.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a side view, and FIGS. 2 to 4 are operation explanatory views. 4 …… Upper revolving structure, 5 …… Work machine main unit, 10 …… Boom, 11 …… Boom cylinder, 12 …… First arm, 15 …… First arm cylinder, 16,19 …… Rod, 20 …… Second arm, 21 …… Second arm cylinder, 22 …… Bucket, 24 …… Bucket cylinder,

Claims (1)

[Claims] 1. A boom 10 which is capable of hoisting a working machine body 5 by a boom cylinder 11, and a boom 10 which is pivotally attached to the tip of the boom 10.
And the first arm that can be rotated by the first arm cylinder 15
12, a second arm 20 pivotally attached to the tip of the first arm 12 and rotatable by a second arm cylinder 21, and a pivotally attached to the tip of the second arm 20 and pivoted by a bucket cylinder 24. Flexible bucket 22, above boom 10 and first arm
Multiple rods 16 and 19 forming a four-bar parallel link between 12
A reach type working machine for a construction machine, which is configured by the above, and in which the working machine body 5 is detachably mounted on the upper swing body 4 of the construction machine.