JPS6145246Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an attachment/detachment structure for a vehicle-mounted work machine, and its purpose is to connect the support of a work machine such as a front loader, a support base fixed to a vehicle such as a tractor, and a boom. To enable easy attachment and detachment using a cylinder.

Normally, a front loader is fixed in an upright position with a grounded bucket and a stand that is removably attached to a boom or prop, and the tractor is moved forward or backward, and the prop is attached to or detached from the prop cradle provided on the tractor. Then, it is attached to and detached from the tractor.

There are various types of front loaders and tractors, including those in which the strut cradle is placed at a height that overlaps with the front wheel, and those in which the front loader strut is inserted vertically into the strut cradle.

In the former and latter, the support column must be moved up and down, and the heavy front loader is moved by a jack or crane, making attachment and detachment work extremely difficult. Another method is to fix the bucket of the front loader and move the column up and down by operating the bucket cylinder, but this not only requires a bucket fixing device, but also requires the operation of the bucket cylinder. Since this is amplified and causes the column to move up and down, slight movement of the column is difficult and dangerous.

In the latter case, if the support and the support base are tightly fitted together, the tractor may move together with the support and the support base, making it difficult to release the fitting, even if the above-mentioned various methods are used.

Therefore, the present invention was devised to solve the above problems, and its features include a column holder fixed to the vehicle, and a column whose lower part is detachably connected to the column holder. , a boom having one end pivotally supported by the support and having a work tool at the other end, and a boom cylinder having one end connected to the boom and the other end connected to the support, the work tool 1
In a vehicle-mounted work machine having a stand that holds the boom 13 in an upright position when the boom 12 is detached from the support pedestal 8 by grounding the support 4, the other end of the boom cylinder is detachable from the support. The support is connected to the support support, and the support support is formed with a receiving portion that supports the other end of the boom cylinder detached from the support in the direction of extension.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

In Figures 1 to 3, 1 is a tractor;
The vehicle body is constructed by connecting the engine at the front, the clutch housing at the middle, and the transmission case 2 at the rear. Reference numeral 3 denotes a front axle frame, which is attached to the lower abdomen on both sides of the engine in a forward-protruding manner, and is formed into a planar portal shape by connecting the frames on both sides at the front end. A front wheel 4 is supported on the front axle frame 3. 5 is a pair of left and right auxiliary frames that hold the clutch housing and transmission case 2.
is provided on both sides of the lower abdomen, and its front end is connected to the connecting member 6.
It is removably fixed to the rear end of the front axle frame 3 with bolts or the like, and the rear end is removably attached to the rear axle case that protrudes from the transmission case 2 and supports the rear wheels. .

The auxiliary frame 5 is provided with an arm 7 extending from below the step 9 in the left and right direction.
A support pedestal 8 is provided at the tip of the support.

Reference numeral 11 denotes a front loading working machine, and a front loader is illustrated as an example. The working machine 11 includes a pair of left and right columns 12 that are removably placed on the column holder 8, and a pair of left and right columns that are pivotally connected to the upper part of the columns 12 and project forward of the tractor body 1. Boom 13 and
The boom 13 has a bucket 14 rotatably connected to the front end of the boom 13, and the boom 13 is supported at its midpoint by a boom cylinder 15 pivotally supported at the bottom of the column 12, so that it can swing vertically. At the same time, the bucket 14 is rotatable by a bucket cylinder 16 pivotally supported in the middle of the boom 13. Each cylinder 15, 16 is connected via a hose to a control valve 18 provided on the support column 12, and the control valve is connected to a hydraulic pump of the tractor 1 via a hose, a coupler, etc.

A connecting rod 17 that connects and reinforces the left and right columns 12 is provided at the upper end of the pair of left and right columns 12. One end of the connecting rod 17 is rotatably connected to one support 12, and the other end is detachably engaged with and fixed to the other support 12, or both ends are detachably connected to the support 12. I'll keep it.

A brace 19 is connected to the middle part of each of the pillars 12 via a bracket 20.
passes diagonally downward on the outside of the bonnet 21,
Its front end is detachably connected to the front end of the front axle frame 3. The front ends of the left and right braces 19 are connected by a pipe 22 , and a receiving member 23 that supports the pipe 22 is fixed to the front end of the front axle frame 3 . By screwing into 23, the two are fixed.

The support column 12 is formed of a channel member with a substantially U-shaped cross section, and its lower part has a tapered width in the front-rear direction, with an inclined plate 26 fixed to the front side and a backing plate 27 fixed to the back side. There is.

The support pedestal 8 is constructed by fixing a U-shaped fitting body 29 in plan view on one side of a side-viewed U-shaped receiving plate 28, and fixing an inclined plate 30 to the inside front side of this fitting body 29. is bolted or welded onto the arm 7.

The lower part of the support column 12 can be fitted into the fitting body 29, and by fitting, the inclined plate 2
6 and 30 are in contact with each other, and the backing plate 27 is in contact with the fitting body 2.
It touches the back wall of 9. 31 is a connecting pin, which is connected to support 1
2 and the fitting body 29, respectively, to prevent them from coming apart. A fixing bolt 32 provided on the back wall of the fitting body 29 is screwed into the support column 12 to prevent separation from the fitting body 29. Incidentally, only one of the connecting pin 31 and the fixing bolt 32 may be used.

The other side of the receiving plate 28 projects obliquely from the front lower end of the fitting body 29 in the front upper direction, and is connected to the boom cylinder 15.
It is located on the rotation locus of the other end 15a with one end of the fulcrum as the fulcrum. That is, the other end 15a of the boom cylinder 15
A pin 33 removably connects the support column 12 to the support column 12.
When the boom cylinder 15 is rotated downward from the solid line position in FIG. 1, the other end 15a comes into contact with the other side of the receiving plate 28.

An acute-angled concave receiving part A that opens forward is formed between the receiving plate 28 and the inclined plate 30, and the other end 15a of the boom cylinder 15 is guided by the other side of the receiving plate 28 and can freely enter. The other end 15a is supported by the receiving portion A and is prevented from moving in the extending direction such as downward and backward directions. In addition, the receiving part A may be formed into a concave shape at the front end of the fitting body 29, and the supporting part 8 may be formed into a concave shape.
includes an arm 7, and a receiving part A is provided on the front wall of this arm 7.
It is also possible to form

Next, the detachment operation of the working machine 11 in the present invention will be explained.

As shown in FIG. 1, the bucket 14 of the working machine 11 attached to the tractor 1 is grounded, and the connecting pin 31
Then, remove the fixing bolt 32 to release the fixation of the post 12 to the post holder 8, remove the pin 33 to free the other end 15a of the boom cylinder 15, and rotate the boom cylinder 15 downward around its front end. Then, the other end 15a is brought into contact with the receiving plate 28.

From this state, the boom cylinder 15 is extended so that the other end 15a enters the receiving part A, and from the state where the other end 15a contacts the inclined plate 30 and relative movement is blocked, the boom cylinder 15 is further extended. Then, the boom 13 rotates upwardly as shown in FIG. 3 about the bucket 14 that is in contact with the ground, and the support column 12 leaves the support base 8 substantially upward.

The boom cylinder 15 is extended and the boom 13
When rotating the bucket belt 14, it is preferable to contract the bucket cylinder 16 so that the bottom surface of the bucket barrel 14 is always kept flat.

The stand 34 has its upper end connected to the column 12 using the insertion hole 12a for the connecting pin 31,
The support column 12 is supported and the boom 13 is held in an upright position together with the bucket 14 which is in contact with the ground. With the column 12 detached from the column holder 8, the lower end of the column 12 is located at a height H higher than the front wheel 4, and after removing the couplers of the hydraulic hoses for each cylinder 15 and 16,
When the tractor 1 is moved backward, the front wheels 4 pass under the support column 12, and the tractor 1 and the work implement 11 can be separated.

When attaching the work implement 11 to the tractor 1, the above operation may be performed in reverse.

Note that when the working machine 11 is attached or removed, the connecting rod 17 hits the muffler 35, so it can be removed, rotated using one end as a fulcrum and placed along the boom 13, or used as a stand for the working machine 11.

4 and 5 show other examples of the stand. This stand 38 is composed of a rod member 39 forming a rack 39a and a ground plate 40 pivotally supported at the lower end of the rod member 39. It is provided so as to be inclined downwardly from the rear.

The side surface of the boom 13 has a pair of guide members 41 into which the rod member 39 can be inserted, a rack body 42 that can engage with the rack 39a, and a cam body 43 rotatably provided on the boom 13. There is.

By rotating the cam body 43 with a handle 44 fixed thereto, the large-diameter portion 43a of the cam body 43 presses the rod member 39 toward the rack body 42 and engages it easily, thereby fixing the stand 38 to the boom 13. , hold the work implement 11 in an upright position. When the cam body 43 is rotated and the small diameter portion 43b is placed on the rod member 39 side,
The rod member 39 is retracted from the rack body 42 to be disengaged, and the engaged position can be changed or the guide member 41
You can remove it from

According to this stand 38, it can be fixed to and released from the boom 13 simply by rotating the cam body 43, and its length can be adjusted almost steplessly, making it extremely useful.

According to the embodiment, since the support part 8 is provided with the receiving part A for receiving the other end 15a of the boom cylinder 15 detached from the support support 12, the boom cylinder can be removed after the connecting pin 31 and fixing bolt 32 are removed. 1
When the boom 13 is extended, the boom 13 rotates upward around the bucket 14, and the column 12 is separated upward from the column holder 8, and its lower end is positioned above the front wheel 4, allowing the tractor 1 to move backwards. becomes. Since the boom cylinder 15 is extended between the boom 13 and the support pedestal 8, even if the support 12 is tightly fitted into the pedestal 8, it can be reliably removed.

The present invention is not limited to the above embodiment. For example, in the case where the support column support 8 is located above the front wheels 4 and the lower part of the support column 12 is inserted in the front-rear direction, the bucket 14 is grounded and the tractor 1 is supported by the support column support 8.
This can be used to push the tractor 1 by extending the boom cylinder 15 and pushing the tractor 1, thereby reliably separating the support 12 from the support stand 8 without moving the working implement 11. This can also be used not only for front loaders but also for backhoes and the like.

In the present invention described in detail above, since the support part 8 is provided with the support part A that supports the other end 15a of the boom cylinder 15 in the extension direction, by operating the boom cylinder 15, the boom 13 and the vehicle 1
This makes it possible to raise the boom 13 and hold it in an upright position via the stand 34 or 38 with the work tool 14 on the ground, and to move the boom 13 relative to the vehicle 1. The work equipment can be easily attached and detached.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the present invention, where Figure 1 is a side view of the working machine attached to a vehicle, Figure 2 is a front view of Figure 1, and Figure 3 is a working machine. FIG. 4 is a side view showing another example of the work equipment stand, and FIG. 5 is a side view showing the main parts of another example of the stand. DESCRIPTION OF SYMBOLS 1...Tractor body, 4...Front wheel, 8...Strut cradle, 11...Front-mounted working machine, 12...Strut, 13
...Boom, 14...Bucket, 15...Boom cylinder, 15a...Other end, 28...Socket plate, 29
...A mating body.

Claims (1)

[Scope of utility model registration request] A prop holder 8 fixed to the vehicle 1 and this prop holder 8
a column 12 whose lower part is removably connected to the column;
It includes a boom 13 whose one end is pivotally supported by the column 12 and has a working tool 14 at the other end, and a boom cylinder 15 whose one end is connected to the boom 13 and the other end 15a is connected to the column 12, In a vehicle-mounted work machine having a stand that holds the boom 13 in an upright position when the work tool 14 is grounded and the support post 12 is removed from the support support 8, the other end 15a of the boom cylinder 15 is attached to the support support 12. The other end 15 of the boom cylinder 15 separated from the support 12 is connected to the support support 8 in a detachable manner.
1. An attachment/detachment structure for a vehicle-mounted working machine, characterized in that a receiving part A is formed to receive a part A in the direction of extension.