JP2002125408A - Stand apparatus for foldable implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To support a stand by installing a stand fitting part at the rear part of the central part of an implement which is long in the right and left direction and is made foldable to the central part side. SOLUTION: (1) The stand fitting part 20 is installed at the rear part of the central part 2 and the stand fitting part 20 is equipped with the stand 21 extended from the lower part of the implement toward the front side of the implement. (2) The stand fitting part 20 has a pair of right and left stand fitting metal fixtures 22 and the right and left stand fitting metal fixtures 22 are connected by a connection member 23. (3) The stand fitting part 20 is detachably fixed to the central part 2. (4) The stand 21 has a rising part 26 extended in the vertical direction to the stand fitting part 20 and a horizontal part 27 which is continued to the rising part 26 and extended in the lower part of the implement and the tip side of the horizontal part 27 and a supporting part 28 arranged in the opposite direction of the horizontal part 27 are equipped with castors 29, respectively. (5) In the stand 21, the fitting position of a castor 29a to a horizontal part 27a is made higher than the underside of the horizontal part 27a. (5) The stand is made detachable from the stand fitting metal fixtures 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work machine having a long length in the left-right direction, which can be folded toward a center portion, a stand mounting portion provided at a rear portion of the center portion, and a work position in a state where the stand is mounted. The present invention relates to a stand device of a folding working machine rotatably supported between a folding work machine and a non-working position.

[0002]

2. Description of the Related Art Conventionally, a central portion is mounted on a rear portion of a tractor via a connecting device. 2. Description of the Related Art A folding working machine rotatably provided in a folded non-working position is well known. In the above-mentioned folding working machine, the working portion extending to the left and right sides from the central portion is in a working position where it is deployed in the left-right direction with respect to the central portion. A stand extending from the front of the working machine toward the rear of the working machine is attached to each of the left and right sides of the working machine so that the stand can be used for attaching and detaching the working machine to and from the tractor.

[0003]

In the above-mentioned conventional folding working machine, the working section is expanded to the left and right with respect to the central portion to be in the working position, and stands are attached to both sides of the front of the working machine. In such a case, the stand cannot be mounted in a state where the working unit is folded, so that there is a problem that the tractor cannot be attached to or detached from the connecting device (especially an auto hitch) and cannot be stored in a warehouse. In addition, if the stands extending from the front of the work machine to the rear of the work machine are attached to the left and right sides of the center, it is necessary for the worker to enter between the work machine and the tractor when attaching and detaching the stand. Furthermore, if an auto hitch is used when attaching and detaching the work equipment to and from the tractor, the rear end of the stand first comes into contact with the ground, so a large force will be applied here and the casters provided at this position will be damaged. There is also a problem that the caster is easy to mount and it is desirable to lower the mounting position of the caster.

In view of the above, the present invention provides a stand mounting portion provided at a rear portion of a central portion where a working machine is mounted on a tractor, and a stand extending from a lower portion of the working machine toward a front side of the working machine. The work machine can be attached to and detached from the tractor regardless of whether the work machine is in the working position or the folding position. In addition, the work machine can be deployed to the working position with the stand attached to the working machine, and further rotated from the working position to the folding position. It is still another object of the present invention to provide a stand device for a folding working machine, in which the mounting positions of the casters are lowered and each of the above problems is solved.

[0005]

To achieve the above object, the present invention has the following arrangement. A. The central part is attached to the rear part of the tractor via a connecting device, and the working part extending to the left and right sides from this central part is deployed to the left and right with respect to the central part, and the non-working position is folded vertically. In the folding working machine rotatably provided, a stand mounting portion is provided at a rear portion of the central portion, and the stand mounting portion is equipped with a stand extending from a lower portion of the working machine toward a front side of the working machine. . are doing.

B. The stand mounting portion has a pair of left and right stand mounting brackets, and the left and right stand mounting brackets are connected by a connecting member.

C. The stand mounting portion is provided so as to be detachable from a central portion.

D. The stand has a rising portion extending in the up-down direction with respect to the stand mounting portion, and a horizontal portion extending downward from the working machine continuously to the rising portion, and a distal end side of the horizontal portion, and a horizontal portion. Is characterized in that casters are respectively mounted on support portions provided in opposite directions.

E. The stand is characterized in that the caster is mounted on the horizontal portion above the lower surface of the horizontal portion.

F. The stand is characterized in that it is detachable from a stand mounting bracket.

[0011]

With the above arrangement, the stand device of the folding working machine according to the present invention performs the following operations. . According to the configuration of the first aspect, the work machine can be attached to and detached from the tractor even when the work machine is in the work position or the folded position, and the stand can be attached to and detached from the work machine. Also, with the stand attached to the work machine,
The work implement can be deployed to the working position and rotated from the working position to the folded position. And it is easy to store in the warehouse, and when attaching and detaching the stand to and from the work machine,
There is no danger since the worker does not need to enter between the work machine and the tractor.Furthermore, when attaching and detaching the work machine to and from the tractor, the stand has a small difference between the position where the stand is attached to the stand mounting portion and the rear caster. Therefore, no large force is applied to the rear caster and no damage is caused.

[0012] According to the configuration of the second aspect, the left and right stand mounting brackets are integrally connected to each other, so that the mounting and dismounting of the stand is stable and easy.

[0013] According to the configuration of the third aspect, when the work is performed with the work machine in the work position, the work can be performed in a lightweight state by removing the stand mounting portion from the center portion, and also obstructs other operating parts of the work machine. Nothing.

[0014] According to the configuration of the fourth aspect, the stand stably supports the work machine, and when the work machine is attached to and detached from the tractor, the front and rear of the stand are almost simultaneously grounded and the caster is not damaged.

[0015] According to the fifth aspect of the present invention, the caster is supported by the horizontal portion at a low position, so that the pocket of the stand can be widened even a little.

[0016] According to the configuration of claim 6, the detachment operation of the stand with respect to the stand mounting bracket can be easily performed.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described.
This will be specifically described with reference to the accompanying drawings. In FIG. 1 to FIG. 3, reference numeral 1 denotes a rotary scraping machine having a predetermined length in the left-right direction, and a front portion of a central portion 2 is provided with a connecting device (not shown) (three-point link mechanism having an automatic hitch). Is connected to the rear of the tractor via a slidable lift. The scraper 1 is attached to and detached from the tractor almost automatically, and the universal joint,
Power is transmitted via an input shaft 4 to a transmission gear box 3 provided at a front center portion of the center portion 2 also serving as a transmission frame via a transmission shaft and the like.

Transmission frames 5 and 5 extend from the gear box 3 to both left and right sides, and upper ends of transmission cases 6 and 6 are fixed to and suspended from both ends. An upper end of a support frame (not shown) is fixed to and suspended from the transmission frames 5 and 5, and a well-known function of crushing and scraping is provided between the support frame and the lower ends of the transmission cases 6 and 6. Work rotor 7
Is mounted on the shaft. The upper part of the work rotor 7 is covered by a shield cover 8 supported. A front part of a first earth grading body 9 is pivotally attached to a rear end of the shield cover 8, and the first earth grading body 9 is fixed. The front of a second leveling body (flat plate) 10 is pivotally attached to the rear part of the body 9, and the first leveling body 9 is provided with a number of protruding downwards for treating impurities in the field into the soil. A contaminant treatment body consisting of a rake-like body is provided.

The work rotor 7, the shield cover 8, the first terrain body 9, the second terrain body (flat plate) 10, and the foreign matter processing body are disposed on the left and right working parts 11 with respect to the central part 2. , 11 are held in a working position expanded left and right by front and rear rotation shafts 12, 12, 13, 13, and a folded position in which it is turned to the central portion 2 side so as to stand upright to reduce the body width. So that it can be rotated to a non-working position. The operation of fixing and releasing the fixing of the left and right working units 11 and 11 during rotation is performed by rotation switching levers 14 and 14. In addition, two spring cylinders (gas springs) 15 are provided between the central portion 2 and the left and right working portions 11 and 11, respectively.
The left and right working sections 11, 1 which are heavy
1 can be easily folded and unfolded. When the left and right working units 11 and 11 are rotated to the working position and the non-working position, the transmission frames 5 and 5 are provided with clutches 16 at opposing ends that come into contact with and separate from each other.

The second leveling body (leveling plate) 10 is pivoted on both sides of the central portion 2 by rotating shafts 13, 13 with the rear portion of the central portion 2 and the left and right working portions 11, 11. It is possible to switch between the leveling operation position and the soil closing operation position when the work parts 11 are in the operation position.
The lower end of a leveling / shedling switching rod 17 is pivotally supported by the second terrain body 10 at the rear of the central portion 2, and the upper end thereof extends to the front of the fuselage, so that a worker riding a tractor faces backward. Thus, it is possible to perform an operation of switching between a leveling work position and a mulling work position for burying the soil. At both left and right ends of the second terrain body 10, the extended terrain body 18 is rotated between an extended operation position and an unused (folded) state in which the extended terrain body 18 is positioned on the upper side of the second terrain body (flat plate) 10. It is provided as possible. The turning operation of the extended terrain body 18 is performed by a pair of left and right raising / lowering operation wires 19 that can be operated by a worker riding a tractor facing backward.

A pair of left and right stand mounting portions 20 are provided at the rear of the central portion 2.
In addition, a stand 21 is provided extending from the lower part of the working machine toward the front side of the working machine. The stand mounting portion 20 has a pair of left and right stand mounting brackets 22, and the left and right stand mounting brackets 22 are connected by a connecting member 23. In addition, the stand mounting portion 20 allows the distal ends of the support arms 24, 24 mounted on the stand mounting brackets 22, 22 to be detachable from the central portion 2 via the mountings 25, 25.

The stand 21 has vertically extending rising portions 26, 26 which are detachably mountable to the stand mounting brackets 22, 22 of the stand mounting portion 20, and the rising portions 26, 26.
A horizontal portion 27 extending downward from the working machine following the
The casters 29 are provided on the distal end sides of the horizontal portions 27 and 27 and the support portions 28 provided so as to extend in the opposite direction to the horizontal portions 27 and 27, respectively. The upper ends of the rising portions 26, 26 are detachable from the stand mounting brackets 22, 22 via connecting pins. The rising portions 26 are connected by a connecting member 30.

The stand 21 may be configured as shown in FIGS. 6 and 7. That is, it has a rising portion 26a extending in the up-down direction, and a horizontal portion 27a extending downward from the working machine following the rising portion 26a,
A caster 29a is mounted on the tip of the horizontal portion 27a via a caster mounting portion 29c so as to be located above the lower surface of the horizontal portion 27a. Also, the horizontal portion 27a
28a provided so as to extend in the opposite direction to
The caster 29b is mounted at a lower position above the lower surface of the horizontal portion 27a. Rising section 26a
The upper end is detachable from the stand mounting bracket 22 via a connecting pin. The rising portion 26a is connected to the other by a connecting member.

In the rotary scraping machine 1 having such a configuration, when performing the crushing and slashing work, the tractor is mounted on the tractor via the three-point link mechanism, and the left and right working units 11 and
11 is deployed to a work position (the state shown in FIGS. 1 and 2) and introduced into a paddy field to perform work. The rotary scraping machine 1 receives power from the tractor on the input shaft 4, is shifted by the gear box 3, is transmitted to the transmission case 6 via the transmission frame 5 including the clutch 16, and drives the work rotor 7. To perform crushed soil and ground leveling work. The soil crushed and scraped by the work rotor 7 is guided by the shield cover 8 and the first terrain body 9 and released to the rear of the work rotor 7, where the first terrain body 9 and the second terrain body 2 are removed. Is leveled by the leveling body (leveling plate) 10.

In the first land preparation body 9, the soil is crushed and scraped by the work rotor 7, and the soil released to the rear is roughly ground. The contaminants in the soil are removed from the soil surface by the contaminated body. It is sent backward while being pushed down to a lower position, and is leveled by the second leveling body (leveling plate) 10. When the rotary ground leveling operation by the rotary ground leveling device 1 proceeds and leveling of the entire field is performed, for example, when moving the soil of the raised portion on the ridge to the lower side, the leveling leveling operation is performed. Is temporarily suspended, and the rotary tractor 1
Is lifted up, and the second leveling body 10 is switched to the burrowing state by the leveling / burrowing-over switching rod lever 17 and fixed.
The rotary ground scraping device 1 is lowered to the field to perform burial work. Further, if necessary, the extended leveling body 18 is operated by the raising / lowering operation wire 19 to be in a working state, and a wide leveling operation is performed.

When the stand 21 is mounted on the rotary ground shading apparatus 1, the rotary ground shading apparatus 1 is lifted up to a predetermined height by a tractor or other means, and a stand mounting portion provided at the rear of the central portion 2 is provided. The upper ends of the rising portions 26, 26 are connected to the stand mounting brackets 22, 22 by connecting pins. In the stand 21, horizontal portions 27, 27 extend from the lower part of the working machine toward the front of the working machine following the rising portions 26, 26, and the front ends of the horizontal portions 27, 27 are opposite to the horizontal portions 27, 27. Since the casters 29 are provided on the support portions 28, 28 extending in the direction, the rotary ground grading device 1 can be stably supported and can be automatically attached to and detached from the tractor, or in a state of being connected to the tractor, or In a state in which the connection is released, it can be moved by the casters 29. Then, the rotary ground scraper 1
The left and right working units 11, 11 with respect to the central part 2
There are a working position (FIGS. 1, 2, 3, and 4) developed right and left around the centers 12, 13, and 13 and a folding position (FIG. 5) in which it is pivoted toward the central portion 2 to stand vertically. Can hold.
When the working units 11 and 11 are in the working position, the clutch 1
6 is in the connected state, and when the working units 11 and 11 are in the folded position, the connection of the clutch 16 is released.

When the stand 21 has the structure shown in FIG. 6 and FIG. 7, the tip of a horizontal portion 27a extending downward from the working machine continuously to the rising portion 26a is provided via a caster mounting portion 29c. The caster 29b is mounted above the lower surface of the horizontal portion 27a. The caster 29b is mounted on a support portion 28a provided so as to extend in a direction opposite to the horizontal portion 27a. , So that the whole stand 21 is low, and the rotary ground leveling device 1 is stably supported. In addition, the stand 21 can be slightly widened, so that it is advantageous to mount it on a working machine. Become.

[0028]

As described above, according to the stand for a folding working machine of the present invention, the following effects can be obtained.

[0029] A stand mounting part is provided at the rear part of the central part, and a stand extending from the lower side of the work machine to the front side of the work machine is provided at the stand mounting part, so that the tractor can be set even when the work machine is in the working position or the folded position. The stand can be attached to and detached from the working machine. Also, with the stand attached to the work machine, the work machine can be deployed to the work position and rotated from the work position to the folded position. This facilitates storage in the warehouse, and when attaching and detaching the stand to and from the work machine, the worker does not need to enter the space between the work machine and the tractor. At this time, since the stand has a small difference between the position where the stand is attached to the stand attachment portion and the front and rear casters, a large force is not applied to the rear casters and damage can be prevented.

[0030] The stand mounting portion has a pair of left and right stand mounting brackets, and the left and right stand mounting brackets are connected by a connecting member, so that the left and right stand mounting brackets are integrally connected to stably attach and detach the stand. Can be done easily.

[0031] The stand mounting part is detachably attached to the central part, so when working with the work equipment in the working position, the stand mounting part can be removed from the central part and work can be done in a lightweight state. It can be kept out of the way of other working parts of the machine.

[0032] The stand has a rising portion that extends in the vertical direction with respect to the stand mounting portion, and a horizontal portion that extends downward from the working machine continuously from the rising portion, and has a tip end side of the horizontal portion and an opposite side to the horizontal portion. The casters are mounted on the support part provided in the direction, so that the stand stably supports the work equipment, and when attaching and detaching the work equipment to and from the tractor, the front and rear of the stand are almost simultaneously grounded so that the casters are not damaged. be able to.

[0033] The stand has the casters mounted on the horizontal part above the lower surface of the horizontal part, so the casters are supported by the horizontal part at a low position, so that the stand can be slightly widened, which is advantageous for mounting on the work equipment. Can be

[0034] The stand is detachable from the stand mounting bracket, so that the stand can be easily attached to and detached from the stand mounting bracket.

[Brief description of the drawings]

FIG. 1 is a plan view of a rotary scraper to which the present invention is applied.

FIG. 2 is a rear view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a rear view of the main part.

FIG. 5 is a rear view of a main part in a state where the working unit is folded to a non-working position.

FIG. 6 is a side view of another embodiment of the stand.

FIGS. 7A and 7B are end views from the direction of the arrow in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Rotary scraping machine 2 Central part 3 Gear box 4 Input shaft 5 Transmission frame 6 Transmission case 7 Work rotor 8 Shield cover 9 1st leveling body 10 2nd leveling body (flat plate) 11 Left and right working sections 12, 13 Rotating shaft 14 Rotation switching lever 15 Spring cylinder (gas spring) 16 Clutch 17 Leveling / shoulder switching rod 18 Extended terrain body 19 Lifting operation wire 20 Stand mounting part 21 Stand 22 Stand mounting bracket 23, 30 Connecting member 24 Support arm 25 Fixture 26, 26a Rise 27, 27a Horizontal 28, 28a Support 29, 29a, 29b Caster 29c Caster attachment

Claims (6)

[Claims] 1. A central portion is mounted on a rear portion of a tractor via a connecting device, and a working portion extending from the central portion to both left and right sides is folded vertically in a working position with respect to the central portion, and is vertically folded. In a folding working machine rotatably provided at a non-working position, a stand mounting portion is provided at a rear portion of the central portion, and a stand extending from a lower portion of the working machine toward a front side of the working machine is provided at the stand mounting portion. A stand device for a folding working machine. 2. The stand device for a folding working machine according to claim 1, wherein the stand mounting portion has a pair of left and right stand mounting brackets, and the left and right stand mounting brackets are connected by a connecting member. . 3. The stand device for a folding working machine according to claim 1, wherein the stand attachment portion is provided detachably with respect to a central portion. 4. The stand has a rising portion extending vertically with respect to the stand mounting portion, and a horizontal portion extending downward from the working machine following the rising portion. 4. A stand device for a folding working machine according to claim 1, wherein casters are respectively provided on the support portion provided in a direction opposite to the horizontal portion. 5. The stand device for a folding working machine according to claim 1, wherein the caster is mounted on the horizontal portion at a position higher than a lower surface of the horizontal portion. 6. The stand according to claim 1, wherein the stand is detachable from a stand mounting bracket.
The stand device of the folding working machine according to 3, 4 or 5.