JPS59374Y2 - Operation structure - Google Patents

Description

[Detailed description of the invention] The present invention relates to an improvement of an operation structure that is equipped with a regulation mechanism that regulates the amount of operation within a certain allowable range and a lock mechanism that disables operation, and simplifies both of the above mechanisms. With the goal.

In order to achieve the above object, the feature of the present invention is that the operating member, which is operated in one direction in response to the operation of the grip operating section, is rotatable around the axis of the operating member. A stopper is connected to the mounting member of the operating member, and the stopper contacts the abutting member in the operating direction of the operating member, and the abutting member has a stopper that contacts the abutting member in the operating direction of the operating member. an abutting portion for locking an operating member having a width that makes inflexible abutment against the stopper in a direction along the operating member;
an abutment portion for regulating the operation range configured to have a width that has a width corresponding to the required operation range of the operation member and comes into contact with the operation member;
The operating member is formed with different phases around its axis, and the sagging configuration provides the following effects.

In other words, by using one contact member as a component of the regulating mechanism and the locking mechanism, the configurations of both mechanisms can be simplified compared to conventional configurations in which both mechanisms are configured separately. Above, although switching between the locked state and the restricted state can be done simply by changing the posture of the contact member,
The switching operation can now be performed easily and quickly.

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

A swivel base 3 is attached to a machine base 2 equipped with a crawler traveling device 1, a control section 4, an engine section 5, and an excavation work device 6 are installed on this swivel base 3, and an earth removal work device 7 is installed on the traveling machine base 2. It can be installed to form a working machine.

The excavation work device 6 is constructed by providing a bracket 8 swingable around a vertical axis, a boom 9 connected to the bracket 8 swinging around a horizontal axis, and an arm having a packet 10 connected to its tip. 11 is pivotally connected to the boom 9, and a fluid pressure cylinder 12 for driving and swinging each member 8, 9, 10, 11 is interposed between the relative swing members. .

In the working device 6, the drive cylinders 12.12 for the swivel platform 3 and the arm 11 are provided by one set of operating structures 13, and the drive cylinders 12.12 for the boom 9 and the packet 10 are provided by another set of operating structures. 13, each can be operated separately or simultaneously.

To configure the operating structure 13, an opening is formed in the cover 15 in front of the driver's seat 14, and a mounting member 17 is provided upright on a portion of the frame 16 facing this opening.
7, the first operating member 18 is attached through the opening so as to be swingable about the horizontal axis, another attaching member 17' is attached to the tip of the first operating member 18, and the first operating member 18 is Horizontal swing axis P1 perpendicular to swing axis P
A grip operation part 24 is provided to be swingable around the cover 15, and an L-shaped arm 20 is attached to the inside of the cover 15 to be swingable around an axis P2 parallel to the swing axis P. Across the arm member 19 of the grip operation section 24,
a swing axis P that connects the second operating member 23 via an axis 21 passing through the swing axis P and a shaft 22 parallel to the horizontal swing axis P1, thereby intersecting the grip operation section 24; The second operating member 23 swings together with the first operating member 18 by swinging around the axis P, and the second operating member 23 swings together with the first operating member 18 by swinging around the axis P1. The second operating member 23 is configured to slide relative to the first operating member 18 in the longitudinal direction.

An arm 25 is attached to the swinging boss of the first operating member 18.
are connected to each other, and the operated portions 26. of the cylinder control valves (1) and (2) are connected to this arm 25 and the above-mentioned cursor-shaped arm 20, respectively.
26 are connected to each other via release wires 27.27, so that by operating one operating section 24 in the cross direction, the operated sections 26.26 can be operated individually or simultaneously. It is composed.

In this operating structure 13, the first and second operating members 18
．． 23 and to limit the swing range of the operating member 18.
．． Operation limiter 28.29 to completely stop the movement of 19
This is provided.

In configuring the restriction mechanism 28 for the first operating member 18,
The cover 1 is integrally formed with the mounting member 17 via the frame 16 and the cover 15.
A first stopper 30.30 is formed of a plate standing upright on both sides of the opening of the first operating member 18 in the swinging direction of the first operating member 18, and the first operating member 18 is loosely fitted in the center of the first stopper 30.30. A first abutment member 31 in the shape of a letter is placed on the stoppers 30, 30.

Bolts (b) with lock nuts (a) provided on both walls of the abutment member 31 are screwed together, and by setting the distance between the bolt (b) and the stopper (30) to an arbitrary width, the sliding movement of the abutment member (31) can be controlled. and a first operating member 18 that moves together with this.
Both edge portions in one direction of the abutment member 31 constitute an abutment portion 32 for regulating the operating range so that the swing range of the abutment member 31 can be regulated to an arbitrary range.

The full width W of the abutment member 31 is equal to the width W of the stopper 30, 3.
It is formed slightly smaller than the interval W of 0, and the contact member 3
1 and rotate it 90 degrees, both stoppers 30.30
Both edge portions 34 in a direction other than the one direction are provided with a locking abutment portion 3 so that the swinging of the first operating member 18 can be completely stopped by inserting it between them and placing it on the cover 15.
4.

On the other hand, the limiting mechanism 29 for the second operating member 23 is configured by attaching brackets (33', 33') to which the poles (d) are screwed together, each provided with a locking nut (c) as shown in FIG. The bracket 33' of the second operating member 23 is fixed to the middle part of the first operating member 18, which is integrally connected to the member 17', at an appropriate interval to form a stopper 33.33. , 33' is a second abutment member 3 having a plate-like abutment part 32 on one side and a U-shaped abutment part 34 on the other side at a position corresponding to the middle.
5 is a provision.

As shown in FIG. 4, this contact member 35 is formed with a ball stopper 36 so as to be stabilized at two positions around the axis of the second operating member 23, and the stopper 36
．． When the plate-shaped abutment portion 32 enters the interval set by d and d in section 33, the second operating member 23 is allowed to move in the axial direction within the set range, while the U-shaped contact portion When the portion 34 enters, the axial movement of the second operating member 23 is stopped.

FIGS. 5 and 6 show a modification of the operation restriction mechanism that restricts the swinging of the first operation member 18. FIG.

A cylindrical member 38 as an abutting member 35 having a bar member 37, 37 extending in the opposite direction from the axis is loosely fitted into the first operating member 18, and is connected to the boss 39 of the first operating member 18. When supported above, the rod members 37 and 37 are formed to be located at the height of the poles b and b.

That is, in this embodiment, the rod members 37, 37 are configured as the abutting portion 34 for locking, and the cylindrical member 38 itself, which is the abutting member, is configured as the abutting portion 32 for controlling the operating range. -ing

The cylindrical member 38 and the operating member 18 are stabilized in two positions by a ball stopper 40, as shown in FIG.

In other words, the first operation member 18 is allowed to swing within the interval set between the bolts b and b, and the swing is almost completely caused by the contact between the poles hb and b and the rod-shaped member 37°37. You can choose between two states in which you can be stopped.

[Brief explanation of drawings]

The drawings show an embodiment of the operating structure according to the present invention, in which Fig. 1 is an overall side view of the working machine, Fig. 2 is a partially cutaway perspective view of the main part,
Figure 3 is a vertical sectional view of the main part, Figure 4 is ■■-IV of Figure 2.
5 is a vertical sectional view of a main part showing another embodiment, and FIG. 6 is a sectional view taken along VI-VI in FIG. 5. 17.17'...Mounting member, 18.23...
...Operation member, 24...Grip operation section, 30.
33...stopper, 31°35...
Abutment member, 32.34...Abutment part.

Claims (1)

[Scope of utility model registration request] With respect to the operating member (18 or 23) that is operated in one direction with the operation of the grip operating section 24, the operating member (18 or 23) is operated in one direction.
Or, the contact member (31) is rotatable around the axis of (23).
or 35), and the operating member (18 or 23) is fitted.
) is provided with a stopper (30 or 33) that comes into contact with the contact member (31 or 35) in the operating direction of the operation member 18 or 23), and The abutting member (31 or 35) has an operating member locking contact having a width that makes flexible contact with the stopper (30 or 33) in the direction along the operating direction of the operating member (18 or 23). This member 34
and a contact portion 32 for regulating the operation range, which is configured to have a width that corresponds to the required operation range of the operation member (18 or 23) and contact the operation member (18 or 23).
3) An operation structure formed with different phases around the axis.