JP2000083409A - Stand for rotary tiller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stand capable of facilitating the attaching and detaching operation, capable of being applied to every kind of apparatus of rotary tillers and every working machine produced by every maker. SOLUTION: This stand 1 for easily performing the attaching and detaching operation of a rotary tiller 100 mounted in the rear part of a tractor has a base frame 2 of the rotary tiller 100 arranged in the front and rear direction of the stand 1, a tine shaft-supporter 3 for holding a tine shaft 107 of the rotary tiller 100 in the base frame 2, and a rear frame supporter 4 for holding a rear frame 111 laterally installed in the rear part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stand technology for safely and easily attaching and detaching a working machine such as a rotary tilling device mounted on a rear part of a tractor regardless of a manufacturer.

[0002]

2. Description of the Related Art Conventionally, various working machines such as a rotary tilling device, a harrow used for scraping, a broad caster for spraying fertilizer, a rear bucket used for carrying work, and the like, are provided behind a farm tractor. A technique for performing various agricultural operations by using a single agricultural tractor by changing the positions is known. In this case, the work equipment can be easily attached and detached through a three-point hitch or two-point hitch work equipment mounting device provided at the rear of the agricultural tractor. The pin can be inserted and removed or a one-touch hitch (called a quick hitch or an automatic hitch) can be used to efficiently replace various work machines.

[0003] However, this rotary tilling device is provided as standard equipment on a tractor, and is usually heavy at several hundred kilograms, and its attachment / detachment work is performed manually. In addition, when the rotary tilling device is removed, the weight balance between the front and rear is poor, and if it is removed from the tractor, it may fall down in the front and back direction, and once it falls down, it takes considerable effort to return the heavy work machine to its original state Had become. Therefore, there is a demand for a technique for stably standing the work machine with the work machine removed from the tractor. For this reason, when the work machine is removed, the work machine must be supported from below. A stand is provided. For example, Japanese Patent Application Laid-Open Nos. 10-98904 and 10-191710.

[0004]

However, in the former technique, since it is necessary to provide a holder on the side frame of the rotary tillage device, the stand can be attached only to the rotary tillage device, and there is no versatility. In the case of the latter technique, it is necessary to lift the stand and fix it with a tool with the holding tool positioned on the conductive tube, and also to turn the screw to adjust the posture of the rotary tilling device. It is necessary to change the angle of the contact plate of the gear case by movement, and the fixing and adjustment work is troublesome. And since it was not the structure which supports the center of gravity of a rotary tillage device conventionally, a supporting member required a strong frame and became heavy. INDUSTRIAL APPLICABILITY The present invention can be more easily attached to and detached from a working machine, and can be applied to any type of working machine and any working machine manufactured by any manufacturer, and is easy to handle and highly versatile. Attempt to provide a stand.

[0005]

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described. In claim 1, in a stand that is mounted and supported when a rotary tilling device mounted on a rear part of a tractor is removed, a claw shaft support for mounting a claw shaft on a front portion of a base frame disposed in a front-rear direction is provided. And a rear frame supporter for mounting and holding a rear frame laterally provided at the rear of the rotary tilling device on the rear of the base frame.

According to a second aspect of the present invention, a "U" -shaped mounting portion is formed on the upper portion of the rear frame support base, the upper portion being open in a side view, in a shape adapted to the rear frame. The frame can be fixed by inserting pins.

According to a third aspect, a concave portion is provided on the upper surface of the claw shaft support.

[0008]

Next, embodiments of the present invention will be described. FIG. 1 is a side view showing an overall configuration when a stand according to an embodiment of the present invention is attached to a rotary tilling apparatus, and FIG. 2 is a perspective view of the same. FIG. 3 is a perspective view showing an application example of a stand configured such that the stand can be attached to and detached from the working machine while the operator is on the tractor.

A rotary tilling device 100 shown in FIG. 1 can mount the stand of the present invention on a working machine having a rotor harrow or a depth beam. The rotary tilling apparatus 100 is connected to a three-point link type work implement mounting device including a top link and a lower link provided at the rear of a tractor (not shown) at the front of the rotary tilling apparatus 100, and can be moved up and down. In addition, in FIG.
A tractor connecting portion 101 of a one-touch type is provided at a front portion of the tractor. The rotary tilling apparatus 100 is configured to be detachable from a tractor, and is driven by transmitting power from a PTO shaft of the tractor to an input shaft 102 via a universal joint, a transmission shaft, and the like.

[0010] The input shaft 102 is a rotary cultivator 10.
The rotation of the input shaft 102 is transmitted to a transmission shaft (not shown) via a gear in the gear box 103. The transmission shaft extends in one direction, left and right, and pipe-like beams 105L and 105R project from the gear box 103 to the side. A chain case 104 is attached to the left end of the beam 105L.
The upper part of L is fixed, the power transmission shaft is housed, and power is transmitted to the chain case 104L. The upper end of the support 104R is fixed to the right end of the right beam 105R.

[0011] The chain case 104L and the support 1
A pawl shaft 107 is rotatably supported laterally between the lower ends of the 04R, and a plurality of tilling claws 106
・ ・ Is planted. The rotation of the input shaft 102 and the transmission shaft is transmitted to the claw shaft 10 via power transmission means such as a sprocket and a chain in the chain case 104L.
It is conveyed to 7.

Support plates 108 are fixedly provided at right and left positions of the beams 105L and 105R.
Front ends of two depth frames 109, 109 are pivotally supported at the rear portions of the support plates 108, 108, and the two depth frames 109, 109 are connected and fixed by connecting arms 110 arranged in the left-right direction. The depth frames 109 of the book are configured to swing vertically. At the rear end of the depth frame 109, a rear frame 1 formed from a pipe in a Π shape is provided.
The front part 11 is inserted and fixed so that the length can be adjusted.
The horizontal frames of the rear frame 111 arranged in the left-right horizontal direction are formed by square pipes.
-The tail wheels 113 are pivotally supported via 112.

A mast 1 is provided on the upper surface of the gear box 103.
14, the mast 114 and the connecting arm 11
A screw rod 115 is interposed between the screw rod 115 and the screw rod 115. The screw rod 115 is configured to be expandable and contractable by the rotation of a handle 116 attached to the upper end thereof. The expansion and contraction causes the depth frames 109 and 109 to tilt up and down, the rear frame 111 to swing up and down, and 113 ・ 113
It is possible to change the plowing depth by changing the height.

Then, the rotary tilling apparatus 1 having the above configuration
00, when mounting another work machine, the rotary tilling apparatus 100 is equipped with the stands 1L and 1R of the present invention, and then the rotary cultivating apparatus 100 is removed. It is possible to move with the stands 1L and 1R attached.

As shown in FIG. 1, the stands 1L and 1R have a configuration in which a claw shaft support 3 is erected on a front upper surface of a base frame 2 arranged in the front-rear direction of a tilling machine 100, and is mounted on a rear upper surface. The rear frame support 4 is provided upright. And, on the front lower surface and the rear lower surface of the base frame 2, caster wheels 5 a that can change direction for movement,
A movable wheel 5b is attached.

As shown in FIGS. 1 and 2, the upper end of the rear frame support 4 is formed as a mounting portion 4a having a U-shaped cross section with its open side facing upward. A suitable number of pin holes 7, 7,.
Are opened in the front-rear direction so that the retaining pins 6, 6... Can be inserted and fixed in the pin holes 7, 7 with the rear frame 111 fitted. In this embodiment, the number of the retaining pins 6 and the number of the pin holes 7 are two each on the left and right. However, the number is not limited thereto, and three or more pins may be used. Further, it can be fixed by bolts or the like. The left and right widths of the mounting portion 4a are sufficiently wide so that the stands 1L and 1R do not fall down when mounted.

The upper surface of the claw shaft support base 3 is formed with a concave portion 3a whose center is concave in a side view, and its width in the front-rear direction is appropriately longer than the diameter of the claw shaft 107, Axis 1
07 can be placed, and the width on the left and right
106 is sufficient. Since the center of gravity of the rotary tilling device 100 is applied to the claw shaft support 3, the front and rear positions thereof are located at the rear of the caster wheel 5 a so as to be able to move stably. However, by forming the claw shaft support 3 in a substantially Y-shape when viewed from the side, it is possible to more stably support the claw shaft support 3.

Next, a method of attaching the pair of left and right stands 1L and 1R having the above structure to the rotary tilling apparatus 100 will be described. In order to remove the stand 1 from the rotary tilling apparatus 100, the operation reverse to the following steps may be performed. That is, when removing the rotary tiller 100 mounted on the tractor, the stand 1L
The rear frame 111 is released and fixed to the depth frame 109 by expanding and contracting so as to match the distance between the claw shaft support 3 and the rear frame support 4 of 1R.

Next, the rotary tiller 100 is lowered until the rear frame 111 of the rotary tiller 100 is positioned above the rear frame support 4. Then, the rear frame support 4 is lifted, and the mounting portion 4 a is inserted into the rear frame 111, and is fixed to the pin hole 7 through the retaining pin 6. Note that the rear frame 111
The mounting position of the mounting portion 4a can be arbitrarily determined.
Since the right-and-left balance is deteriorated, it is necessary to take these factors into consideration and attach it to an appropriate position. Also, claw shaft 1
The pawl shaft 107 is rotated so that the tilling pawl 106 fixed to the position 07 does not interfere with the pawl support 3. In this case, the claw shaft 107 of the working machine 100 is moved to the concave portion 3 a at the upper end of the claw support base 3.
, And the tilting posture of the rotary tilling apparatus 100 in the front-back direction is adjusted to be a stable posture by the expansion and contraction of the screw rod 115 by the turning operation of the handle 116. Stand 1L ・ 1 with the above mounting method
After mounting the R in pairs, the rotary tiller 100
To lower the caster wheels 5a and 5b to the ground.

When the pin is removed from the work implement mounting device at the rear of the tractor or the one-touch tractor connecting portion 101 is removed in the state where the tractor is grounded, the rotary tilling device 10 is removed.
Numeral 0 maintains a state of being stably supported by the stand 1.
Therefore, when the rotary tilling device 100 is mounted on the tractor again, it is possible to mount the rotary tilling device 100 in this stable state.

As shown in FIG. 3, the stand 1L
・ Connecting frame 20 ・ 2 between base frames 2 ・ 1 of 1R
0 so that the rotary tilling apparatus 100 can be removed while being mounted on the tractor, by detachably fixing the fitting parts 4a so as to open the upper parts of the mounting parts 4a and 4a outward in a substantially Y-shape in side view. The tractor or the stand 1L is lowered to a position above the stands 1L and 1R so that the rear frame 111 and the fitting portions 4b and 4b coincide in the upper back direction.
By moving the 1R and further lowering the rotary tilling apparatus 100, it is possible to save labor such as lifting the stand 1 and inserting and fixing a pin, thereby simplifying the work. Furthermore, by using the one-touch type tractor connection part 101, while riding on the tractor,
The rotary tilling device 100 can be attached or detached.

The stands 1'L and 1'R shown in FIG.
, The base of the rear frame support 4 is formed in a cylindrical shape, and the base is fitted to the base frame 2. A plurality of positioning holes 21 are opened at appropriate positions in the base frame 2, and the base of the rear frame support 4 is fixed with mounting pins 22.
With the above configuration, the position of the rear frame support 4 can be adjusted back and forth. Further, similarly, a configuration in which the position of the claw shaft support base 3 can be adjusted back and forth can be adopted.

[0023]

The present invention is configured as described above.
The following effects are obtained. That is, as shown in claim 1, in a stand that is mounted and supported when the rotary tilling device attached to the rear of the tractor is removed,
A rear frame that provides a claw shaft support for mounting the claw shaft on the front of the base frame arranged in the front-rear direction, and mounts and holds a rear frame that is laid laterally behind the rotary tiller on the rear of the base frame A support base is provided, so it can be mounted on any rotary tilling device manufactured by any manufacturer and placed when it is removed.When replacing a rotary tilling device or buying a tractor In addition, it can be used as it is, there is no need to purchase a new one, and when the working machine attached to the agricultural tractor has a rear frame, it can be applied to a wide variety of working machines. .

Also, since most rotary tilling devices are configured so that the height of the rear frame can be adjusted up and down, by performing the adjustment, the inclination angle can be adjusted, and it can be placed and stored in a stable posture. Becomes In addition, since the claw shaft support and the rear frame support are provided on the base frame, the structure is simple and can be manufactured at low cost.
The structure is designed to support the claw axis of the rotary tilling device, so that the position near the center of gravity of the work machine can be directly supported, and the work machine is reliably stabilized without the front-rear balance becoming unstable. Since the frame is not supported and suspended, the rigidity of the frame itself can be reduced, the frame can be made lightweight, and can be easily lifted and mounted.

According to a second aspect of the present invention, a U-shaped mounting portion is formed on the upper portion of the rear frame support base, the upper portion being open in a side view, in a shape adapted to the rear frame. Since the rear frame is configured to be fixable by inserting the pins, the rear frame is securely fitted to the rear frame support, can be fitted, and can be attached without rattling. In addition, since the rear frame is attached by inserting and removing pins, the rear frame can be easily attached to the stand without using a tool, and the rear frame can be securely supported and fixed.

According to the third aspect of the present invention, since the concave portion is provided on the upper surface of the front claw shaft support, the claw shaft can slip on the claw shaft support by supporting the claw shaft with the concave portion. Thus, the claw shaft can be reliably supported from below, and the support stability of the working machine is improved.

[Brief description of the drawings]

FIG. 1 is a side view showing an overall configuration when a stand according to an embodiment of the present invention is attached to a rotary tillage device.

FIG. 2 is a perspective view of the same.

FIG. 3 is a perspective view showing an application example of a stand configured so that the operator can attach and detach the stand to and from the work machine while the operator is on the tractor.

[Explanation of symbols]

 1L / 1R stand 2 base frame 3 claw shaft support 4 rear frame support 6 retaining pin 7 pin hole 100 work machine (rotary tillage device) 101 connecting portion 107 claw shaft 109 depth arm 111 rear frame

Claims (3)

[Claims] 1. A stand which is mounted and supported when a rotary tilling device mounted on a rear part of a tractor is removed,
A rear frame that provides a claw shaft support for mounting the claw shaft on the front of the base frame arranged in the front-rear direction, and mounts and holds a rear frame that is laid laterally behind the rotary tiller on the rear of the base frame. A stand for a rotary tillage device, comprising a support base. 2. A "U" -shaped mounting portion is formed on the upper portion of the rear frame supporting base, the upper portion being open in a side view, in a shape adapted to the rear frame, and the rear frame is provided with a pin. The stand of the rotary tillage device according to claim 1, wherein the stand is configured to be fixable by insertion. 3. The stand of the rotary tilling device according to claim 1, wherein a concave portion is provided on an upper surface of the claw shaft support base.