JPH0521556Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a front loader attachment/detachment device.

(Prior art) For example, as a front loader that is removably attached to a tractor body, for example,
The one described in Publication No. 57-142056 is publicly known.

In the above-mentioned vehicle, a pair of mounting frames each having a front loader mounting portion are provided on both left and right sides of the tractor body, and the front loader is provided with a pair of left and right mounting frames having mounting portions for the front loader in an upright manner and removably attached to both the mounting portions. a pair of left and right lift arms that are pivotally supported on both mounting columns by support shafts in the left and right direction, and a pair of left and right lift cylinders that are interposed between both mounting columns and both lift arms to raise and lower both lift arms. , a bucket that is pivoted to the front end of both lift arms by a support shaft in the left and right direction, a pair of left and right bucket cylinders that are interposed between both lift arms and the bucket to rotate the bucket, and a bucket from both mounting columns. The vehicle has a pair of left and right braces that project forward and whose front ends are removably attached to both left and right sides of the front of the vehicle body.

When the front loader is attached to or removed from the tractor body, the stand is detachably attached to the lift arm, and with the stand and bucket in contact with the ground, the bucket cylinder is expanded and contracted, allowing the lift arm to connect to the lift arm. The mounting strut is raised and lowered, so that the mounting strut can be freely changed between a position on the mounting portion and a removal position above the mounting portion.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional device, a dedicated stand had to be prepared separately, which caused problems in terms of cost.

Further, it is necessary to attach the front loader to the body of the tractor and store the stand while in use, which is troublesome and there is a risk of losing the stand.

Furthermore, when removing the front loader at a work site, it is necessary to separately transport a stand to the work site, and if the stand is forgotten, there is a problem that the front loader cannot be removed.

Further, in a garden tractor, a muffler and an air cleaner are respectively protruded from the sides of the front hood of the tractor in the left and right outward directions, and are disposed above each brace.

Therefore, when attaching or detaching the front loader to the garden tractor mentioned above, it is necessary to remove the brace to avoid the muffler or air cleaner hitting the brace. There was also the problem that if people forgot to put the braces on, the muffler or air cleaner would hit the braces, causing them to break or become damaged.

An object of the present invention is to provide a front loader attachment/detachment device that can solve the above problems.

(Means for Solving the Problems) In order to solve the above problems, the means adopted by the present invention is that a front loader mounting portion 15 is provided on the side of the vehicle body 3 of the vehicle 1, and the front loader F is ,
a mounting post 20 that is in an upright configuration and is detachably attached to the mounting portion 15; a lift arm 22 that is pivotally supported on the mounting post 20 by a support shaft 21 in the left and right direction;
A lift cylinder 2 that is interposed between the mounting column 20 and the lift arm 22 and raises and lowers the lift arm 22.
3, a working part 25 that is pivotally supported at the front end of the lift arm 22 by a support shaft 24 in the left and right direction, and a working part 25 that is interposed between the lift arm 22 and the working part 25.
The working part cylinder 26 that rotates the
It has a brace 27 which projects forward from 0 and whose front end is detachably attached to the side of the front part of the vehicle body 3, and when the front loader F is attached to or detached from the vehicle body 3, the working part 25 is grounded. The front loader F is equipped with a stand that is in contact with the ground, and the lift arm 2 is supported by the working part cylinder 26.
2 and the mounting strut 20 are raised and lowered so that the position of the mounting strut 20 can be freely changed between a position on the mounting part 15 and a removal position on the upper side thereof, in which the brace 27 is moved up and down with respect to the mounting strut 20. The brace 27 serves as a stand when the front loader F is attached to or detached from the vehicle body 3.
It is removably attached to the
The point is that the working part 25 is prevented from rotating relative to the other surface.

(Function) When removing the front loader F from the vehicle T, the working part 25 is grounded and the brace 2 is
7 from the mounting strut 20 and the vehicle body 3, and attach it to the working part 25, and with the brace 27 grounded,
Prevents rotation of the working part 25 relative to the other surface.

Next, after releasing the fixation of the mounting column 20 to the mounting part 15, the lift arm 22 and the mounting column 20 are raised by the working part cylinder 26, and the mounting column 20 is moved from the position on the mounting part 15 to the upper part thereof. Change the position to the removal position on the side.

Attachment of the front loader F to the vehicle T is performed in the reverse order.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. A garden tractor T illustrated as a vehicle has a pair of left and right front wheels 1 and rear wheels 2, and a vehicle body 3. , an engine 4, a front axle frame 5 projecting forward from the engine 4, and a transmission case 6.
It is composed of etc.

The engine 4 is covered by a bonnet 8,
A muffler 9 and an air cleaner 10 project outward from the left side of the bonnet 8 and from the right side, respectively. Further, a handle 11 is provided at the rear end of the bonnet 8.

Reference numeral 13 denotes a pair of left and right side frames, which are installed along the left and right sides of the vehicle body 3 in the front-rear direction and are removably attached, and projecting frames 14 extend outward from the front of each side frame 13. A front loader mounting portion 15 is provided on the outer side of each projecting frame 14 in a protruding manner. A positioning pin 16 is provided to protrude upward from the mounting portion 15 .

A pair of support members 17 are detachably attached to the front outer surfaces of the left and right side plates of the front axle frame 5 in an upright manner, and engagement pins 18 protruding outward are formed on the upper outer portions of the support members 17. has been done.

A front loader F is removably attached to the vehicle body 3, and the front loader F has a pair of left and right mounting struts 20 that stand upright and are removably attached to the front loader mounting portion 15, and A pair of left and right lift arms 22 are pivotally supported on a mounting post 20 by a support shaft 21 in the left and right direction, and both mounting posts 2
0 and both lift arms 22, and a pair of left and right lift cylinders 23 for raising and lowering both lift arms 22; a pair of left and right bucket cylinders 26 which are interposed between both the lift arms 22 and the bucket 25 and serve as working cylinders for rotating the bucket 25; It has a pair of left and right braces 27, etc.

A pair of left and right coupling pins 29 are fixedly provided at the upper portions of both the mounting columns 20 so as to protrude inwardly. The bottom plate 30 of the mounting column 20 has a mounting portion 1
The positioning pin 16 of No. 5 is removably engaged, and the bottom plate 30 is removably fixed to the mounting portion 15 by a fixing pin 31.

The brace 27 has a plate shape, and pin insertion holes 32 and 33 are formed in the front and rear ends thereof in the left-right direction, and the engagement pin 18 of the support member 17 is inserted into and removed from the front pin insertion hole 32. ing. The engagement pin 29 of the mounting column 20 is inserted into and removed from the rear pin insertion hole 33 .

Both braces 27 are arranged so as to become lower toward the front end and closer to the vehicle body 3, and a muffler 9 and an air cleaner 10 are arranged above each brace 27.

As shown in FIGS. 2 and 3, both braces 27 are used as connecting members that connect both mounting columns 20 and both left and right sides of the front part of the vehicle body 3, and as shown in FIG. , is used as a stand when the front loader F is attached to and detached from the vehicle body 3.

As mentioned above, since both braces 27 are used as stands, there are bolt holes 3 on each side of the upper part of the bucket 25 for attaching each brace 27.
5 is formed, and a pair of slits 36 for preventing rotation of the brace 27 are fixedly provided.

According to the embodiment configured as described above, when the front loader F is removed from the vehicle body 1, the lift arm 22 is lowered to ground the bucket belt 25, and in this state, both the left and right braces 27 are attached to the mounting supports. 20 and support member 17.

Next, the mounting bolts 38 are inserted into the pin insertion holes 32 and 33 on the front or rear side of both braces 27 that have been grounded, and the mounting bolts 38 are removably fastened to the bolt holes 35 of the bucket belt 25. The brace 27 is held between a pair of stoppers 36 to prevent its rotation.

After that, remove the fixing pin 31 and attach the mounting post 2.
0 from the attachment part 15.

Then, by both braces 27, the bucket 25
While preventing rotation relative to the ground, the bucket cylinder 26 is contracted to raise the lift arm 22 and the mounting column 20 around the support shaft 24, and the mounting column 20 is moved to the mounting portion 15 shown in FIG. The engagement between the engagement pin 18 and the bottom plate 30 is released by changing the position from the upper attachment position to the upper removal position as shown in FIG.

Then, the tractor T is moved to the front loader F.
When the front loader F is moved backward from the vehicle body 3, the removal work of the front loader F from the vehicle body 3 is completed.

In addition, when installing the front loader F to the vehicle body 3 of the tractor T, the work is done in the reverse order to the above.First, the tractor T is attached to the front loader F.
As shown in FIG. 1, the relative positional relationship between the two is made appropriate.

Next, the bucket cylinder 26 is extended, the lift arm 22 and the mounting column 20 are lowered around the support shaft 24, and the mounting column 20 is moved from the removal position shown in FIG. 1 to the installation position shown in FIG. Then, the engaging pin 18 and the bottom plate 30 are engaged with each other.

After that, the mounting support 20 and the mounting portion 15 are fixed with the fixing pin 31, and the brace 27 is fixed.
from the lift arm 22 and attach it to the mounting column 20.
When the front loader F is interposed between the front loader F and the support member 17, the work of attaching the front loader F to the vehicle body 3 is completed.

As mentioned above, the brace 27 is used as a stand for the front loader F when the front loader F is attached to and detached from the vehicle body 3.
There is no need to separately prepare a dedicated stand, which solves the cost problem.

Furthermore, even when the front loader F is used by being attached to the vehicle body 3 of the tractor T, there is no need to store the stand as in the past, and there is no troublesome problem and there is no risk of losing the stand. .

Furthermore, even when the front loader is removed at a work site, there is no need to separately transport a stand to the work site, which is convenient.

Furthermore, when attaching or detaching the front loader F to or from the vehicle body 3, the brace 27 is always removed from the front loader F.
Forgetting to remove 7, muffler 9 and air cleaner 1
The brace 27 will not hit the 0, and there is no risk of breakage or damage to the muffler 9 or the cleaner 10 due to the hit.

Incidentally, the brace may be attached to a support member or an attachment column using attachment bolts.

(Effects of the invention) As detailed above, according to the invention, there is no need to prepare a special stand when attaching and detaching the front loader to the vehicle body, which solves the problem of cost and makes it possible to store the stand. There's no need for it, and there's no risk of losing it. Furthermore, even when the front loader is removed at a work site, there is no need to separately transport a stand to the work site, which is convenient. Furthermore, even if the vehicle is a garden tractor and the front loader protrudes from the bonnet, there is no risk that the muffler or air cleaner will be damaged or damaged by the brace when the front loader is attached to or detached from the vehicle body. The present invention has the above advantages and is of great practical benefit.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIGS. 1 and 2 are side views showing different operating states, and FIG.
The figure is a partial plan view. 3... Vehicle body, 15... Front loader mounting part, 20... Mounting strut, 21, 24... Support shaft, 2
2... Lift arm, 23... Lift cylinder,
25... Bucket (working part), 26... Bucket cylinder (working part cylinder), 27... Brace,
F...front loader, T...tractor (vehicle).

Claims (1)

[Claims for Utility Model Registration] A front loader mounting portion 15 is provided on the side of the vehicle body 3 of the vehicle 1, and the front loader F is provided with an upright mounting support that is removably attached to the mounting portion 15. 20, a lift arm 22 which is pivotally supported on the mounting post 20 by a support shaft 21 in the left and right direction, and a lift cylinder 23 which is interposed between the mounting post 20 and the lift arm 22 and raises and lowers the lift arm 22.
, a working part 25 that is pivotally supported on the front end of the lift arm 22 by a support shaft 24 in the left and right direction, and a working part cylinder 26 that is interposed between the lift arm 22 and the working part 25 and rotates the working part 25. , mounting post 20
It has a brace 27 that projects forward from the front end and is detachably attached to the front side of the vehicle body 3, and when the front loader F is attached to or detached from the vehicle body 3, the working part 25 is grounded and the front The loader F is equipped with a stand that is in contact with the ground, and the lift arm 2 is
2 and the mounting strut 20 are raised and lowered so that the position of the mounting strut 20 can be freely changed between a position on the mounting part 15 and a removal position on the upper side thereof, in which the brace 27 is moved up and down with respect to the mounting strut 20. The brace 27 serves as a stand when the front loader F is attached to or detached from the vehicle body 3.
It is removably attached to the
A front loader attachment/detachment device characterized in that rotation of a working part 25 with respect to the ground is prevented.