JPH0819689B2 - Tilt rotation device for work tools such as excavators in excavators - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a tilt rotation device for a work implement such as an excavator of an excavator.

2. Description of the Related Art The excavator part of a conventional power shovel can scoop soil or the like in civil engineering work, but cannot rotate the excavator part in a desired direction in any other direction without a scooping method.

As a means for solving such a problem, conventionally, it is considered that the excavator part is attached to the tip of the arm of the working machine via a revolving table so that the excavator part can be rotated 360 degrees. (See Japanese Utility Model Laid-Open No. 59-140354, Japanese Patent Laid-Open No. 60-73919 and Japanese Patent Laid-Open No. 62-240295).

On the other hand, although it is not possible to turn, it is also considered that the shovel can be swung in a direction perpendicular to the excavation direction (Japanese Utility Model Publication No. 61-173558, Japanese Utility Model Publication No. 59-76658 and (See Japanese Utility Model Publication No. 54-7607).

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-mentioned conventional apparatus, which is provided with a turning table, there is an advantage that the excavator portion can be turned to perform excavation in any direction of 360 degrees. However, there is a case where it is desired to perform work such as excavation by swinging (tilting) the shovel in a direction perpendicular to the excavation direction, and there is a drawback that such a work cannot be dealt with by simply turning. For example, as in the invention described in the above-mentioned JP-A-62-240295, an invention was devised in which a pair of shovels can be opened and closed so that not only excavation but also a thing such as a log can be grasped. However, the swivel type can grab a log or the like that is tilted in the turning direction in any direction, but cannot grip a log that is tilted in a direction perpendicular to the turning direction. .
On the other hand, in the case where only the swing is possible, the excavator cannot be swung, so that the freedom of work is greatly limited.

Further, in any case, in the above-mentioned conventional one, even if the shovel can swing, it does not mean that the swivel table itself is swung with respect to the arm side. When the bucket or shovel is swung with respect to the turning table, a cylinder for turning the shovel in the opening / closing direction or the excavating direction and a cylinder for tilting the shovel at a right angle are arranged between the bucket and the turning table. Therefore, it is necessary to have a structure to avoid the interference of these movements.
Further, also for the swinging cylinder, it is necessary to use a swivel joint in the swivel table portion for an oil passage for supplying pressure oil to the cylinder from the working machine side, and the structure becomes complicated as a whole. There are drawbacks.

The present invention eliminates the above-mentioned conventional drawbacks, and arbitrarily selects turning of a shovel or bucket and tilting in a direction perpendicular to the excavation direction to perform work in almost any direction toward the shovel. The purpose is to provide a device having a simple structure.

Means for Solving the Problems In order to solve the above problems, the present invention is directed to an arm side rotating body attached to the arm tip of a working machine such as an excavator excavator and a center of rotation with respect to the arm side rotating body. In a revolving table including a working tool-side rotating body that rotates as a body, an arm attachment frame for attaching the arm-side rotating body to the arm is swingably attached to the arm-side rotating body, and The main body mounting frame is connected with a hydraulic cylinder for performing the swinging operation.

In the above description, the work tool means a shovel, a bucket, or the like attached to the turning table.

EXAMPLE Next, a specific configuration for achieving the above object will be described with reference to the drawings. Reference numerals 1 and 1 are a pair of first arm attachment members for connecting to an arm tip portion of a power shovel body, At one end of them, arm mounting boss 2
And an arm attachment boss 3 is attached to the other end.

The outer surfaces of the arm mounting bosses 2, 2 arranged at one end of the first arm mounting member 1, 1 are connected by a single second arm mounting member 6, and the first arm mounting member 1 is also provided. The outer side surfaces of the arm mounting bosses 3 and 3 disposed at the other end of the first arm 1 are connected by another second arm mounting member 6, and the middle of the second arm mounting members 6, 6 is connected. Rotating body bosses 5 and 5 are attached to the portion. In this embodiment, the first arm attachment members 1 and 1 and the second arm attachment members 6 and 6 form an arm attachment frame 7 of the present invention.

The second arm attachment members 6, 6 are
On both sides sandwiching the arm attachment members 6, 6, the support plates 8, 8 fixed to the arm-side rotary body 13 are supported by interposing the rotary body attachment pins 9, whereby the arm attachment frame 7 is supported. The pin 9 is pivotable with respect to the side rotating body 13.

Further, at the intermediate position between the first arm attachment members 1 and 1, the upper ends of the hydraulic cylinders 11 and 11 for rocking operation are attached via hydraulic cylinder attachment pins 12, and the other parts of the hydraulic cylinders 11 and 11 are attached. A hydraulic cylinder mounting pin 12 provided at the tip of the end piston portion is mounted on the arm side rotating body 13 via its support.

In addition, the working tool side rotating body 14 is disposed on both sides of the arm side rotating body 13 opposite to the arm mounting frame 7,
The turning table 10 of the present invention is composed of the arm-side rotating body 13 and the work implement-side rotating body 14.

In the embodiment shown in FIG. 1, a rotary joint 15 for supplying pressure oil to a cylinder such as an excavator attached to the working tool side rotating body 14 is arranged at the center of the arm side rotating body 13, The rotary joint 15 is arranged so as to be inserted into a hole provided in the shaft of a pipe shaft type hydraulic motor 16 coaxially arranged at the position of the joint, and is axially attached to the motor 16. An intermediate gear 18 is disposed on the left and right sides of the hydraulic motor gear 17 and meshes with them. The intermediate gears 18 are meshed with the internal gear-shaped rotating body gear 19 provided on the working tool side rotating body 14. The intermediate gear shaft 20 of the intermediate gear 18 is
The arm-side rotating body 13 is rotatably supported at a desired position.

In the embodiment of FIG. 4, the rotary joint 15 and the hydraulic motor 16 are not coaxially arranged, but the hydraulic motor 16 is arranged outside the first arm mounting member 1. In addition, at a suitable position on the surface of the arm side rotating body 13 on the side of the first arm attachment member 1, the working tool side rotating body 14 is provided.
A lock body 21 is provided for locking the device at an appropriate rotation position. On the other hand, the working tool-side rotating body 14 is provided with a lock portion 22 provided on a circumferential side surface portion thereof so that the lock body 21 can be locked at a desired position of the lock portion 22. A hydraulic motor 16 is arranged at an appropriate position on the upper surface of 13.

FIG. 5 shows a state in which the shovel 25 is attached to the working tool-side rotating body 14. And the arm of the excavator
The tip of 26 is pivotally attached to the arm attachment boss 2 at one end of the first arm attachment member 1, and the tip of the link 27 on the arm 26 side is also pivotally attached to the other arm attachment boss 3. I am trying to attach it to the 26 and use it.

In such a mounted state, when one of the two hydraulic cylinders 11 for rocking operation is extended and the other is contracted, the revolving table 10 and the shovel 25 are integrated, and are moved in the direction of arrow A in the figure. Since it swings, the direction of the shovel 25 can be freely changed by arbitrarily selecting this operation and the rotational position of the work implement side rotating body 14.

EFFECTS OF THE INVENTION As described above, according to the present invention, since the swing table attached to the tip of the arm of the working machine is swingably attached to the attachment portion to the arm, the swing table is turned. Not only can the shovel or bucket attached to the table be rotated 360 degrees, but it can also be swung in a direction that is almost perpendicular to the center of rotation, so excavators etc. The degree of freedom with respect to the direction of is greatly increased, and not only the work application is expanded, but also work efficiency can be significantly improved. Particularly, in the present invention, since the swing cylinder is provided between the swing table and the arm attachment portion to the arm, the swing table itself is swingable,
Even if the shovel or bucket is rotated hydraulically with respect to the swivel table, it is not necessary to consider interference with the swivel cylinder, and a swivel joint for the swing cylinder is attached to the swivel table. Since it is not necessary to provide it, there is an effect that the structure is simplified as a whole.

[Brief description of drawings]

FIG. 1 is a plan view of a tilt rotation device of an automatic hand device according to the present invention. FIG. 2 is a front view of the tilt rotation device shown in FIG. FIG. 3 is a side view of FIG. 3 seen from a position rotated by 90 degrees in the horizontal direction. FIG. 4 is a plan view of the same tilt rotation device as in FIG. 1, in which the hydraulic motor is arranged at a position away from the center. FIG. 5 is a perspective view showing how the device of the present invention is attached to a bucket. 7 …… Arm mounting frame 10 …… Revolving table 11 …… Hydraulic cylinder 13 …… Arm side rotating body 14 …… Work implement side rotating body 26 …… Arm

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-59-150809 (JP, A) JP-A-60-73919 (JP, A) JP-A-62-240295 (JP, A) Actual development Sho-59- 76658 (JP, U) Actually open 61-173558 (JP, U) Actually open 59-140354 (JP, U) Actually public 54-7607 (JP, Y1)

Claims (1)

[Claims] 1. An arm 26 of a working machine such as an excavator excavator.
In a revolving table 10 including an arm-side rotating body 13 attached to the tip and a work implement-side rotating body 14 that rotates about the rotation center with respect to the arm-side rotating body 13, the arm-side rotating body 13 has The arm mounting frame 7 for mounting to the arm 26 is swingably mounted to the arm side rotating body 13 and the arm side rotating body 13
A tilt rotation device for a work implement such as an excavator in an excavator, characterized in that the arm mounting frame 7 and the arm mounting frame 7 are connected by a hydraulic cylinder 11 for performing the swing operation.