JPS607421Y2 - work equipment - Google Patents

Description

[Detailed description of the invention] The present invention includes an arm on a boom that can be driven and swung vertically, and a work tool on the arm, respectively, parallel to the swing axis of the boom or around the S parallel axis. A model is provided that is rotatably attached to the drive and operates proportionally to changes in the position and posture of the boom, arm, and work implement, and is configured to operate the boom, arm, and work implement by the model. Regarding the working equipment.

In this type of work machine, in order to drive the work tool, conventionally, the operating member on the model side for operating the work tool is
In addition to being used as a handle for operating the model, the operating member is parallel or nearly parallel to the swing axis that pivots the arm-equivalent model member to the boom-equivalent model member. The operating member swings as the arm-equivalent model member swings, thereby maintaining a constant posture of the arm and the work tool relative to it. When driving and swinging in the state, in order to avoid swinging the operating member with respect to the arm-equivalent model member,
The operating tool must be rotated by turning the wrist by the amount of swing of the arm-equivalent model member relative to the boom-equivalent model member, and the original operating member must be rotated to drive and rotate the work tool relative to the arm. In addition, it is necessary to rotate the above-mentioned arm when driving and moving the arm, and the operating member as a whole must be rotated over a large range, and sometimes the operating member must be changed, making it difficult to operate using the model. It was becoming difficult to do.

In view of the above points, the present invention makes it easier to operate the work tool intuitively in relation to the main body of the work machine by rotating the operating member to drive and oscillate the work tool. To improve operability as a whole by avoiding turning an operating member more than necessary when operating an arm while maintaining a constant posture of a working tool relative to the arm.

Next, embodiments of the present invention will be described in detail based on the drawings.

A swivel base 2 is provided on a traveling vehicle body equipped with a crawler traveling device 1 so as to be able to freely rotate around a vertical axis Q, a control cabin 3 is provided on the swivel base 2, and an excavation device 4 is provided in the front part. , the swivel table 2 and the excavation device 4 are configured to be driven by hydraulic pressure, which is an example of a fluid pressure type, and thus the working machine is configured to perform ground excavation work.

The excavation equipment 4 has a boom 5 pivotally connected to a swivel base 2 so as to be swingable around a horizontal axis 1, and an arm 6 to the boom 5.
, and a packet 7 as an example of a working tool is attached to the arm 6 with the horizontal axis P1. Pivotally connected around P2, cylinders 8, 9, and 10 are interposed between the swivel base 2 and the boom 5, between the boom 5 and the arm 6, and between the arm 6 and the packet 7, respectively, and the cylinders 8... Boom 5 and arm 6 are activated by the operation of
It is configured to drive and move the packet 7.

In the control cabin 3, there is provided a model B that operates proportionally to the change in position and attitude of the boom 5 and the arm 6, and the cylinders 8, 8 of the boom 5 and the arm 6, respectively, operate in conjunction with the operation of the model B. Control valve V1 for 9. (2) is configured so that the model B can be automatically operated via the pilot pressure mechanism 11, and the boom 5 and arm 6 can be driven by operating the model B.

That is, to configure model B, a first model member 5a corresponding to the boom 5 is pivotally connected to the base 12 so as to be rotatable around a horizontal swing axis Q, and the first model member 5a is
A second model member 6a corresponding to the arm 6 is pivotally connected around a swing axis Q□ parallel to the swing axis Q, and a fixture 13 is attached to the second model member 6a. is pivotally connected to the attachment 13 so as to be rotatable around an axis corresponding to the rotation axis of the packet 7 with respect to the arm 6, and
The configuration includes an operating member 14 for the packet 7.

To explain the state of connection between the arm 6 and the second model member 6a, the plate 15 is rotatably and pivotally connected to the second model member 6a, and the plate 15 is provided with a structure extending from the second model member 6a. control valves A19 and A2 of the pilot pressure mechanism 11 are provided so as to face each other with the operation pieces 16 of the pilot pressure mechanism 11 in between;
When the model B is operated, the control valve A1. A2 is operated to operate both Rondo type cylinders 17 linked to the arm control valve V2, thereby driving the arm 6.

The arm 6 and the plate body 15 are connected to a release wire 18
．． As the arm 6 is driven, the plate body 15 is rotated, and the control valves A□ and A2
is configured so that the arm 6 is automatically closed and the arm 6 is driven in response to the second model member 6a.

Note that the boom 5 and the first model member 5a are also linked with each other in a similar configuration.

The operating member 14 for the packet 7 is mounted so as to be swingable around an axis R that is substantially perpendicular to the swinging axis Q2 of the fixture 13 for the second model member 6a. The disc member 19 and the disc member 20 rotatably provided on the base 12 are connected to the release wire 24.2.
4, and an operating piece 21 is connected to the disk member, and as the operating piece 21 rotates, that is, the operating member 14 rotates, one of the control valves Bl-82 in the pilot pressure mechanism 11 is operated. The packet 7 is driven by operating the double rod type cylinder 23 linked to the packet control valve V3.

The mounting fixture 13 and the first model member 5a are interlocked and connected via a parallel or nearly parallel four-speed link mechanism 22 that uses the second model member 6a as a constituent link member. On the distal end side of the model member 5a, a part of the boom equivalent model member 5a, an arm equivalent model member 6a, and a link member 22a facing the boom equivalent model member 5a on the distal end side of the arm equivalent model member 6a, A parallel link mechanism 22 consisting of a connecting link member 22b connecting the link member 22a and the boom equivalent model member 5a is provided, and a link member of the parallel link mechanism 22 faces the boom equivalent model member 5a. 22a is fixed to the rotating shaft of the fixture 13, allowing the second model member 6a to swing relative to the first model member 5a, and regardless of the swing, the fixture 13 and the first model The structure is such that the relative posture with respect to the member 5a can be maintained constant.

In summary, the present invention provides a work machine that has been officially registered, in which a part of the boom-equivalent model member 5a, an arm-equivalent model member 6a, and an arm-equivalent model member are provided on the tip side of the boom-equivalent model member 5a of the model B. A link member 2 facing the boom equivalent model member 5a on the tip side of the boom 6a.
2a and a connecting link member 22b that connects the link member 22a and the boom-equivalent model member 5a. Model member 6
A fitting 13 that rotates integrally with the link member 22a facing the boom equivalent model member 5a is provided on the tip side of the boom equivalent model member 5a, and an operating member 14 for operating the working tool 7 is provided on the fitting 13. is attached rotatably around an axis R perpendicular to the swing axis Q2 on the tip side of the arm equivalent model member 6a, and the swing axis Q on the tip side of the arm equivalent model member 6a
The working tool 7 is characterized in that it is configured so that the working tool 7 can be rotated by a rotational operation around an axis R perpendicular to the working tool 2.

In other words, a fixture 13 is provided on the arm equivalent model member 6a so that it can swing around an axis 02 that is approximately parallel to the swing axis Q1 attached to the boom equivalent model member 5a, and the fixture 13 is operated. The member 14 is mounted so as to be able to rotate around the axis R that is substantially perpendicular to the axis Q3, and the working tool 7 is rotated by rotating the operating member 14, so that the arm 6 can be driven and oscillated. Arm equivalent model part 6
Although the attachment 13 swings a lot when you oscillate the a, the operating member 14 only rotates due to the distance from the operator, and you can only rotate it by simply bending and stretching your arm. By rotating the operation member 14 to drive and rotate the work tool 7, the operation of the work tool 7 can be easily performed intuitively, and the arm 6 can be easily operated.
Even when driving and swinging the work tool 7 while maintaining a constant posture relative to it, the operation can be easily performed without rotating the operating member 14.

In addition, the mounting fixture 13 and the boom equivalent model member 5a are connected via the link mechanism 22, and the boom equivalent model member 5a is connected via the link mechanism 22.
Since the relative attitude with the boom 5 is maintained constant, it is easy to swing only the arm 6 without swinging the boom 5, or to swing the booms 1 and 5 to a predetermined position. It has been made possible to greatly improve the overall operability.

[Brief explanation of drawings]

The drawings show an embodiment of the working machine according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a side view showing the state of connection between the excavation equipment and the model, and Fig. 3 is a circuit diagram showing the pilot pressure mechanism. , FIG. 4 is a view taken along the line TV-IV in FIG. 2. 5...Boom, 5a...Boom equivalent model member, 6...Arm, 6a...Arm equivalent model member, 7...Work Ingredients, 13...
...Mounting tool, 14...Operation member, 22...
...Link mechanism, B...Model, P...
...Boom swing axis, Pl...Arm rotation axis, P2...Work tool rotation axis, Q□...
- Arm equivalent model member swing axis, Q2... Attachment swing axis, R... Operation member rotation axis.

Claims (1)

[Scope of utility model registration request] An arm 6 is attached to the boom 5 which can be driven and swung vertically, and a work tool 7 is attached to the arm 6, respectively, with the swing axis P of the boom 5.
parallel to or S゛parallel axis P1. The boom 5, the arm 6 and the work tool 7 are attached so as to be freely driven and rotatable around P2.
A working machine is provided with a model B that operates proportionally to the change in position and posture of the model B, and is configured to operate the boom 5, the arm 6, and the work implement 7 by the model B. On the tip side of the boom equivalent model member 5a, a part of the boom equivalent model member 5a, an arm equivalent model member 6a, and a link member 22a facing the boom equivalent model member 5a on the tip side of the arm equivalent model member 6a. and a connecting link member 22b that connects the link member 22a and the boom equivalent model member 5a. A fitting 1 is provided on the tip side of the member 6a and rotates integrally with a link member 22a facing the boom equivalent model member 5a.
3, and an operating member 14 for operating the work tool 7 is attached to this fixture 13 so as to be rotatable around an axis R perpendicular to the swing axis Q2 on the distal end side of the arm equivalent model member 6a. , a working machine configured to rotate the working tool 7 by a rotation operation around an axis R perpendicular to the swing axis Q2 on the tip side of the arm-equivalent model member. .