JPH0215145Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a fluid pressure valve operating lever device for a wheel loader or the like.

<Prior Art> Conventional bucket carts and booms of wheel loaders and the like are operated by operating the first valve element and the second valve element of a fluid pressure valve using separate operating levers. Conventionally, in order to allow this operation to be performed with a single lever at the request of the user, a third lever was used.
As shown in the figure, there is a control lever rotating body 3 that supports the control lever 1 to rotate around a first axis 2, and a control lever rotating body 3 that supports the control lever 1 to rotate around a first axis 2, and the rotary body 3 to be freely rotatable around a second axis 4 that is orthogonal to the first axis 2. A supporting rotating body mounting member 5 was provided. The bucket or boom is operated by rotating the operating lever 1 around the first shaft 2 or the second shaft 4.

However, in this case, the rotating body mounting member 5 must be newly attached to the vehicle body by welding or the like, and the additional work to convert the two levers into one lever takes about three hours. It took.

Also, a first shaft 2 attached to the operating lever rotating body 3 and a second shaft 4 formed on the rotating body mounting member 5
are formed as separate members from each other, and both shafts 2,
4 are not at the same height, there is a drawback that a large space is required in the vertical direction.

<Purpose> In view of the above-mentioned drawbacks, the present invention provides a fluid pressure valve operating lever device that can shorten the additional work time required to rotate one operating lever around two axes and also reduce the space required. With the goal.

<Example> Hereinafter, an example of the fluid pressure valve operating lever device of the present invention will be described based on FIGS. 1, 2, and 4. Fig. 1 is an exploded perspective view of the main parts of a fluid pressure valve operating lever device showing an embodiment of the present invention, Fig. 2 is a perspective view of the operating lever rotating body, and Fig. 4 is a diagram showing the installation of the fluid pressure valve to the vehicle body. FIG.

Components having the same functions as those in the conventional configuration shown in FIG. 3 are given the same reference numerals.

As shown in the figure, the present invention includes a pair of first shafts 2 that are detachably supported on the vehicle body, and
an operating lever rotating body 3 rotatably supported by;
The rotating body 3 includes an operating lever 1 rotatably supported around a second shaft 4, and the rotating body 3 has a through hole 2a spaced apart from each other and through which the first shaft 2 passes. A pair of projecting pieces 2A, 2B having 2b
and a spanning piece 16 that spans both protruding pieces 2A, 2B, forming a U-shape in plan view with an open front side,
The second shaft 4 protrudes inside the spanning piece 16 and is fixed, and is disposed so as to be perpendicular to the center line connecting the pair of first shafts 2 within the same plane. , is connected to the first valve element A of the fluid pressure valve 10 via the first operation piece 5a fixed to the outer surface of the spanning piece 16. It is connected to the second valve element B of the fluid pressure valve 10 via the two operating pieces 4a, and a triple lever 24 can be attached to the first shaft 2.

The fluid pressure valve 10 has a bucket link 10a and a boom link 10b on its upper end surface 10A.
and the triple link connection part 1 for attaching the triple link.
0c is attached, the bucket link 10a is connected to the first valve A, and the boom link 10 is connected to the first valve A.
b is connected to the second valve B.

The operating lever rotating body 3 includes a pair of protrusions 2 that are spaced apart from each other and have through holes 2a and 2b through which shaft portions 14 and 15 as the first shaft 2 pass.
A, 2B and a spanning piece 16 that spans both protruding pieces 2A, 2B, forming a U-shape in plan view with an open front side. Both projecting pieces 2 are attached to the front surface of the spanning piece 16.
The second shaft 4, which has a small cylindrical shape and projects in the same direction as A and 2B, is integrally formed. In addition, as shown in FIG. 2, the two protruding pieces 2A,
The first operation piece 5a that protrudes in the opposite direction to 2B is integrally formed.

A sleeve-shaped boss portion 1A is formed at the lower end of the operating lever 1, and the boss portion 1A is connected to the second shaft 4.
The second operating piece 4a is formed on the side surface of the boss portion 1A and protrudes in the radial direction.

The inner end of the first shaft 2 is configured such that the operating lever 1 can rotate around the second shaft 4 when the boss portion 1A of the operating lever 1 is fitted onto the second shaft 4. It is fitted into the through holes 2a and 2b.

Moreover, the upper ends of the bucket link 10a, the boom link 10b, and the first operating piece 5
There are small holes 17 in the masks of a and the second operating piece 4a, respectively.
are formed, and the bucket link 10a and the first operation piece 5a, and the boom link 10b and the second operation piece 4a have small holes 17a, 17b,
A link pin 18 passes through and is connected to 17c and 17d.

Reference numeral 19 in FIG. 4 indicates bolts 21a and 21b for fixing the fluid pressure valve 10 to the pressure oil tank 20, 22 indicates a stopper lever formed on the pressure oil tank 20, and 23 indicates a bolt pin.

Next, the operation will be explained. When the user operates the bucket or the boom, when the user pulls the operating lever 1 forward, the operating lever rotating body 3 moves in response.
That is, the rotating body 3 rotates about the first shaft 2, the first operation piece 5a pulls the bucket link 10a, the first valve A of the fluid pressure valve 10 is opened, and the bucket is operated.

Further, when the operating lever 1 is rotated clockwise around the second shaft 4, the boss portion 1A and the second operating piece 4a are interlocked without interlocking the rotating body 3, and the boom link 10b is The second valve B of the fluid pressure valve 10 is opened and the boom is operated.

In addition, when installing the triple lever 24 shown by the imaginary line in FIG. 1, the shaft portion 1 as the first shaft 2
4, the boss portion 24A of the triple lever may be fitted and attached, and the boss portion 24A and the connecting portion 10c of the fluid pressure valve may be connected.

Therefore, the bucket and the boom can be operated with one operating lever 1. In addition, since the rotational centers of the operating lever 1 and the operating lever rotating body 3 are in the same plane, the space for the lever device in the vertical direction can be reduced. Further, when the bucket and boom are operated in one operation according to the user's request, the time required for attaching the operating lever rotating body 3 and the operating lever 1 to the main body can be reduced to about one hour.

It should be noted that the present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

For example, the shapes of the first operating piece 5a, the second operating piece 4a, etc. in the present invention are not limited to the above embodiments.

<Results> As is clear from the above description, the present invention includes a pair of first shafts that are detachably supported on the vehicle body, an operating lever rotating body that is rotatably supported on the first shafts, The rotating body includes a control lever rotatably supported around a second axis, and the rotating body includes a pair of protrusions spaced apart from each other and having a through hole through which the first axis passes. , is formed in a U-shape in plan view with an open front side from a spanning piece that spans both protruding pieces, the second shaft projects inside the spanning piece and is fixed, and the second shaft is fixed to the inside of the spanning piece. The operating lever rotating body is arranged to be perpendicular to the center line connecting the shafts in the same plane, and is connected to the first valve of the fluid pressure valve via a first operating piece fixed to the outer surface of the spanning piece. The operating lever is connected to the second valve of the fluid pressure valve via the second operating piece fixed to the rotary boss portion of the operating lever, so that the bucket and boom can be operated by a single operation at the user's request. If the lever is used, the additional machining time required to rotate one operating lever around two axes can be reduced, and the first and second axes are formed inside the rotating body. Moreover, since the rotation centers of the operating levers are at the same height, the space for the lever device can be reduced.

In addition, since the triple lever can be attached to the first shaft, it is easy to change to a triple combination type by simply fitting the triple lever to the first shaft. It has a positive effect.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the main parts of a fluid pressure valve operating lever device showing an embodiment of the present invention, FIG. 2 is a perspective view of the operating lever rotating body, and FIG. 3 is a conventional fluid pressure valve operating lever device. Main parts exploded perspective view, No. 4
The figure is an exploded perspective view when the fluid pressure valve is attached to the vehicle body. 1: Operation lever, 1A: Boss part, 2: First shaft,
3: Operation lever rotating body, 4a: Second operation piece, 4:
Second shaft, 5a: First operation piece, 10: Fluid pressure valve, 2
0: Pressure oil tank, 21: Lockwasher, 22:
Stopper lever, 23: Washer, 24: Kota pin.

Claims (1)

[Scope of utility model registration request] A pair of first shafts that are detachably supported on the vehicle body, an operating lever rotating body that is rotatably supported by the first shaft, and a control lever rotating body that is rotatably supported by the rotating body about a second shaft. an operating lever, and the rotating body includes a pair of protruding pieces that are spaced apart from each other and have a through hole through which the first shaft passes, and a connecting piece that spans the protruding pieces. It is formed into a U-shape in plan view, and the second axis projects inside the spanning piece and is fixed, and is arranged to be perpendicular to the center line connecting the pair of first axes in the same plane, The operating lever rotating body is connected to a first valve element of a fluid pressure valve via a first operating piece fixed to an outer surface of a connecting piece thereof, and the operating lever is connected to a first valve element of a fluid pressure valve via a first operating piece fixed to an outer surface of a connecting piece thereof. A fluid pressure valve operating lever device, characterized in that it is connected to a second valve element of a fluid pressure valve via two operating pieces, and a triple lever can be attached to the first shaft.