JPS5938545Y2 - Structure of work tool attachment part of work vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for attaching a work tool for a work vehicle, in which a mounting member that can be driven up and down is inserted into a downward opening formed in the work tool.

The above structure allows a work tool such as a shovel to be attached to and removed from a mounting member such as an arm that can be driven and swung vertically, and when the work tool is attached, the mounting member is inserted into a recess and raised. The work tool can be fixed in a predetermined position relative to the mounting member, and the work tool can be mounted easily and quickly.

The structure of the work implement attachment part as described above is based on Utility Model Act 131
There is a technique described in Publication No. 42.

However, with this structure, when inserting the mounting member provided at the end of the arm into the downward opening recess formed in the work tool, there is flexibility for fitting in the left and right direction, but the work tool However, there was no flexibility to significantly change the position of the mounting member in the left and right direction.

Therefore, it has not been possible to change the position of the mounting member relative to the work tool in the left-right direction to make work near walls or cliffs safer and easier.

Therefore, as a means to eliminate the above-mentioned drawbacks, it is possible to change the position of the mounting member by providing a plurality of downward opening recesses in the horizontal direction for the work tool. In the case where the position of the mounting member is changed by changing the position of the mounting member, the vehicle body must be moved each time the mounting position is changed, and there is a drawback that the mounting position cannot be changed quickly or easily.

A technical problem of the present invention is to change the attachment position of the attachment member to the work tool without moving the vehicle body by devising the shape of the downward opening recess.

The technical means of the present invention taken to solve the above problem is to make the width of the downward opening recess larger than the width of the insertion part of the mounting member, and to change the insertion position of the mounting member into the downward opening recess from left to right. At the same time, a mounting member is provided on the back surface of the working tool and below the downward opening recess, the mounting member being able to be changed in position in a plurality of positions along the width direction of the four downward openings. , an engaged member having an engaged portion formed therein for fixing at each of the changed positions is fixed, and the mounting member is further provided with a vertical direction relative to the engaged portion of the engaged member. A locking body that engages with the locking body is provided, and the locking body and the engaged member form a fixing mechanism that prevents the mounting member from sliding from side to side.

The effects of taking the technical measures described above are as follows.

That is, the width of the downward opening recess is configured to be larger than the width of the insertion part of the mounting member, so that the insertion position of the mounting member relative to the four downward openings can be slid in the left-right direction. By sliding the work tool along the mounting member while the member is raised above the ground, the mounting position of the mounting member relative to the work tool can be changed in the left-right direction, making it possible to quickly change the mounting position of the mounting member. , can be easily done.

When fixing the mounting member inserted into the downward opening recess, it is fixed by a fixing mechanism that engages from above and below, compared to, for example, a fixing mechanism that engages from front and back. In other words, compared to the case where a bolt hole is provided on the back of the work tool that passes through it in the front and back direction, and the bolt is screwed into the bolt hole from the front and back direction to fix it.
To prevent muddy water from spilling out from remaining pin holes when transporting earth and sand with a high moisture content using a working tool such as a bucket.

Embodiments of the present invention will be described below with reference to the drawings. 3 An arm 2 that can be vertically driven and oscillated by a fluid pressure cylinder 1 is extended in front of the vehicle body around an axis 41 at the rear of a self-propelled vehicle body. A removable excavator 3 is attached to the extended end so that it can be driven vertically and swung by a hydraulic cylinder 4 and a link mechanism, and the excavator work vehicle is configured to scoop up earth and sand as the vehicle moves. It is.

The shovel 3 is installed based on the structure shown in FIGS. 2, 3, and 4.

That is, a pair of left and right downward opening recesses 7 are formed on the back of the shovel 3 by a back plate 5 and a plate 6 attached thereto.
, 7, and a pair of left and right mounting members 8, 8 which can be individually engaged in and removed from the recesses 7.7, can be driven up and down by the arm cylinder 1 in one direction, and are connected to the shovel cylinder 4 in a link mechanism. It is attached to the extending end of the arm so as to be freely driven and swingable around the upward axis 42.

The shovel 3 is fixed to the mounting member 8 by inserting and fixing the pin 10, which is a removable locking body, between the bracket 9, which is an engaged member attached to the back plate 5, and the mounting member 8. A mechanism 11 configured as above is provided in correspondence with each of the singing members 8, 8.

Then, the mounting members 8, 8 are inserted into the recesses 7, 7 of the shovel 3 placed at an appropriate location such as on the ground by moving the vehicle body forward and raising the arm 2, thereby locking the shovel 3 to the arm 2. Then, the shovel 3 whose arm 2 is raised above the ground is swung toward the mounting member 8 by its own weight, and the engagement member of the bracket 9 and the mounting member 8 with respect to the fixing pin 10 is inserted. This is to align the holes 12.

As shown in FIGS. 2 and 4, the respective widths of the recesses 7 and 7 are configured to be larger than the width of the insertion portion 8a of the mounting member 8, and the respective fixing mechanisms 11 and 11 are In order to allow the insertion position of the mounting member 8 into the four parts 7 to be changed, a plurality of insertion holes 12 for the fixing pins 10 of the bracket 9 are arranged in parallel in the width direction of the four parts.

Use shovel 3 to scoop up dirt near the wall.
When adjusting the amount of protrusion of the lateral end from the side edge of the vehicle body, the excavator 3 is raised above the ground by lifting the mounting members 8, 8, and both fixing pins 10 and 10 are removed.
It is designed to slide against the mounting members 8, 8.

Note that the shovel 3 can be changed to various working tools such as an earth removal plate and a fork, and these are collectively referred to as the working tool 3.

[Brief explanation of the drawing]

The drawings show an embodiment of the work tool mounting structure of a working vehicle according to the present invention, FIG. 1 is an overall side view of the excavator working vehicle, FIG. 2 is an exploded perspective view of the shovel mounting structure, and FIG. 3 is an illustration of the shovel mounting structure. FIG. 4 is a partially cutaway side view showing the state, and FIG. 4 is a partially cutaway rear view showing the shovel installed state. 2...Arm, 3...Work tool, 7...
...Recessed portion, 8...Mounting member, 8a...
...Insertion part, 9...Engaged member, 10...
... Locking body, 11 ... Fixing mechanism, 12 ...
...Engaged part.

Claims (1)

[Scope of utility model registration request] The mounting member 8, which can be driven up and down, is inserted into four downward openings 7 formed on the back surface of the working tool 3, and the mounting member 8 inserted into the downward opening recess 7 is inserted into the working tool 3.
This is a work implement attachment structure for a work vehicle configured to be fixed to the attachment member 8, in which the width of the four downward openings 7 is
The width of the insertion part 8a is larger than the width of the insertion part 8a, and the insertion position of the mounting member 8 with respect to the downward opening recess 7 can be slid in the left-right direction. At the lower position of the recess 7, an engaged portion 12 for fixing the mounting member 8 whose position is changed to a plurality of positions along the width direction of the downward opening recess 7 at each of the changed positions. The engaged member 9 having a shape formed therein is fixedly installed, and the mounting member 8 is provided with a "2" lower part with respect to the engaged part 12 of the engaged member 9. A locking body 10 that engages from the direction is provided, and this locking body 10
and the engaged member 9 constitute a fixing mechanism 11 that prevents the mounting member 8 from sliding from side to side.