JPH0344830Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an attachment/detachment device for a front loader that is detachably attached to a tractor.

(Prior Art) As a front loader that is detachably mounted on a tractor, for example, the one described in Japanese Utility Model Application Laid-open No. 60-96454 is known.

This conventional type has a column that is removably installed on a mounting base provided in the middle part of the tractor body in the longitudinal direction, and a column that is pivotally attached to the top of the column so that it can rotate in the vertical direction and extends forward. A boom that is ejected, a bucket that is pivotally attached to the front end of the boom so that it can rotate freely in the vertical direction,
The vehicle was equipped with a brace that connected the upper part of the support column and the front part of the vehicle body.

When the above-mentioned conventional front loader is removed from a tractor and stored, a stand is fixed to a bucket or the like, and the bucket and stand are grounded and supported with the boom and support raised.

(Problems to be Solved by the Invention) In the conventional type, when the front loader is removed from the tractor body and stored, a separate stand must be attached.
While using the front loader attached to the tractor,
I had to keep the stand.

Storing such a stand is troublesome, and there is a risk that it may be lost. Furthermore, when the front loader is to be removed at a work site, a separate stand must be carried to the work site, and if the stand is forgotten, the front loader cannot be removed.

Therefore, an object of the present invention is to solve the above-mentioned problems by repurposing the components of the front loader to form a stand, thereby eliminating the need for a separate stand.

(Means for solving the problems) In order to achieve the above object, the present invention takes the following measures. That is, the features of the present invention include a column that is removably installed on a mounting base provided in the middle part of the tractor body in the longitudinal direction, and a column that is pivotally attached to the upper part of the column and extends forward. In the front loader, the front loader includes a boom, a working tool pivotally attached to the front end of the boom, and a brace connecting the upper part of the support and the front of the vehicle body, wherein the brace is removable from the support and the vehicle body. The provided and removed brace is removably attached to the boom as a stand for the front loader.

(Function) According to the present invention, when the front loader is mounted on a tractor, the brace is attached to connect the column and the front of the vehicle body so as to perform the original function of the brace.

When the front loader is removed from the tractor, the brace is removed from the column and the front of the vehicle body, and the removed brace is fixed to the boom and used as a stand.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 2 and 3, 1 is a tractor, and the tractor 1 has a pair of left and right front wheels 2 and a rear wheel 3. The front part of the tractor 1 has a bonnet 4 that covers an engine and the like, and a steering wheel 5 is provided at the rear of the bonnet 4. Behind this steering wheel 5 and on the left and right rear wheels 3
A driver's seat 6 is arranged above the gap.

A muffler 7 and an air cleaner 8 protrude outward from the sides of the bonnet 4 to the left and right.

A horizontal frame 9 is fixed transversely to the lower abdomen of the vehicle body of the tractor 1 at a midpoint in the longitudinal direction, and both ends of the horizontal frame 9 protrude outward from both left and right side surfaces of the vehicle body of the tractor 1. Mounting stands 10 are fixed to both ends of this horizontal frame 9. A positioning pin 11 projecting upward is fixed to the mounting base 10, and a bracket 13 is fixed to the mounting base 10, which allows a locking pin 12 to be freely inserted and removed from the rear.

Front and rear frames 14 extending rearward are fixed to the left and right protrusions of the horizontal frame 9, and the rear ends of the front and rear frames 14 are fixed to a rear axle box 15. Furthermore, a reinforcing frame 16 extending forward is provided on the left and right protrusions of the horizontal frame 9, and the front part of the reinforcing frame 16 is fixed to the rear part of the front axle frame 17. This front axle frame 17 is fixed to both sides of the lower part of the engine, and a brace support 19 is fixed transversely to the front part of the front axle frame 17 via a bracket 18 (see FIGS. 1 and 4). ).

At both ends of the brace support 19, engagement pins 20 projecting outward in the left and right directions are fixed. Further, a retaining pin 21 is removably inserted into the tip of the engagement pin 20.

Reference numeral 22 denotes a front loader, and the front loader 22 includes a pair of left and right columns 23 that are removably placed and erected on the mounting base 10, and a pivot point at the upper end of the columns 23 that can freely rotate in the vertical direction. A boom 24 that extends forward after being attached, a bucket 25 pivotally attached to the front end of the boom 24 so as to be rotatable in the vertical direction, a boom cylinder 26 interposed between the support column 23 and the boom 24, and the boom 24. and a bucket cylinder 27 interposed between the bucket and the bucket 25, and a brace 28 that connects the support column 23 and the brace support 19.
etc.

The pillar 23 has a positioning hole 29 in its lower part, into which the positioning pin 11 is removably inserted;
It has a locking hole 30 into which the locking pin 12 is removably inserted (see FIG. 5). As shown in FIG. 2, the column 23 is fixed to the mounting base 10 by fitting the positioning pin 11 into the positioning hole 29 and fitting the locking pin 12 into the locking hole 30.

As shown in FIG. 3, the brace 28 is arranged in a figure-eight shape when viewed from above, with the front portion of the brace 28 being close to the vehicle body. Then, as shown in FIG. 2, the brace 28 is attached to the tractor 1.
The front portion thereof is provided in a downward-sloping shape so as to pass below the protruding ends of the muffler 7 and the air cleaner 8.

The brace 28 has pin insertion holes 31 and 32 at its front end and rear end, and the pin insertion hole 3 at the front end.
The engagement pin 20 is inserted through the connector 1, and is prevented from coming off by a retaining pin 21. A coupling pin 3 fixed to the support column 23 is inserted into the pin insertion hole 32 at the rear end.
3 is inserted, and the support column 23 and the brace 28 are connected.

The brace 28 is used as a connecting member to connect the support column 23 and the front part of the vehicle body as shown in FIGS. 2 and 3, and also as a stand 34 of the front loader 22 as shown in FIGS. 1 and 4. used.

That is, the boom 24 is connected to the connecting pin 35 and the stopper 3.
6 is provided, the strut 23 and the brace support 1
The brace 28 removed from the boom 28 is fixed to the boom 24 by inserting the pin insertion hole 31 into the connecting pin 35 and inserting the retaining pin 21 into the connecting pin 35. When the end surface of the brace 28 comes into contact with the stopper 36, the mounting angle α between the brace 28 and the boom 24 is fixed, the other end of the brace 28 comes into contact with the ground, and the brace 28 is used as a stand 34.

As described above, after the brace 28 is attached to the boom 24 as the stand 34, the locking pin 12 is pulled out and the connection between the support column 23 and the mounting base 10 is released. Next, when the bucket cylinder 27 is retracted, the boom 24
The rear part of the support column 23 rises, and the support column 23 also rises, and the support column 23 separates from the mounting base 10. After that, when the tractor 1 is moved backward, the front loader 2
2 removal work is completed (see Figure 4). The removed front loader 22 is kept in an upright position by the bucket 25 and stand 34 and stored.

According to the above embodiment, the brace 28 is removed when the front loader 22 is attached or detached.
Even if there is a protruding object such as a muffler 7 or an air cleaner 8 on the side of the tractor 1, it will not get in the way.

Furthermore, since the removed brace 28 is used as the stand 34, there is no need to prepare a separate dedicated stand as in the conventional case, which is convenient.

Furthermore, since the front loader 22 is removed with the bucket cylinder 27 at its shortest length, the cylinder rod will not rust even if it is left unused for a long period of time, thereby reducing the occurrence of oil leakage.

It should be noted that the present invention is not limited to the above-described embodiment, and the brace 28, the column 23, and the brace support 19 may be connected by any means.

(Effects of the invention) According to the invention, since the brace is also used for the stand, there is no need for a dedicated stand as in the past, resulting in cost reduction. Also, it is convenient because there is no need to store a dedicated stand like in the past.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention,
Showing the brace used as a stand,
FIG. 2 is a front view showing the brace in use as an original brace, FIG. 3 is a plan view thereof, and FIG. 4 is a front view showing the state with the front loader removed. 1...Tractor, 10...Mounting base, 22...Front loader, 23...Strut, 24...Boom,
25... Bucket (work tool), 28... Brace,
34...Stand.

Claims (1)

[Scope of Claim for Utility Model Registration] A column that is removably installed on a mounting base provided in the middle of the vehicle body of the tractor in the longitudinal direction, and a boom that is pivotally attached to the top of the column and extends forward. , a front loader comprising a working tool pivotally attached to the front end of the boom, and a brace connecting the upper part of the support column and the front part of the vehicle body, the brace being removable from the support column and the vehicle body, A detachable device for a front loader, wherein the removed brace is detachably attached to the boom as a stand for the front loader.