JPH0110961Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a tilling and crushing machine, and relates to one in which the rotation direction of a tilling rotary for tilling and crushing soil is switched between an up-cut direction and a down-cut direction. .

(Prior art) Conventionally, this type of rotary tiller has a vertical shaft erected at the top of a mill case, as described in Japanese Patent Application Laid-open No. 58-198201. While block-shaped seats are provided on the left and right sides of the mounting case, a cylindrical body into which the above-mentioned vertical shaft is inserted is provided in the middle of the mounting frame. A U-shaped fitting body that can be attached and detached from the above-mentioned seat is pivoted so as to be rotatable in the vertical direction, and a locking pin that locks the left and right seats is removably inserted into the left and right fitting bodies. A structure has been proposed in which a nut is screwed on.

(Problems to be Solved by the Invention) According to the above structure, the tilling device main body can be horizontally rotated in the front and back direction via the vertical axis with respect to the mounting machine frame, and is preferable in that it can be switched between the up-cut direction and the down-cut direction. However, when the main body of the tiller rotates horizontally, the nut is tightened to the vertical shaft through the cylinder, so after removing the locking pin from the left and right fitting bodies, There is a problem in that the bracket must be rotated outward around the pin of the bracket to remove it from the seat, which requires a lot of effort.

Therefore, the present invention was devised in view of these points, and it is an object of the present invention to provide an easy-to-handle tilling soil crusher that has a simple structure and can easily switch the tilling rotary in the up-cut direction or the down-cut direction with a simple operation. It is intended for this purpose.

[Structure of the idea]

(Means for Solving the Problems) The tilling and crushing machine of the present invention is provided with a tilling rotary whose upper part is covered with a cover body so as to be rotatable, and with an input shaft protruding in the front and back direction, so that either one of the input shafts can be The machine comprises a machine frame provided with a transmission for transmitting power from the shaft to the tilling rotary, and a connecting frame body which is rotatably connected to the machine frame and is connected to the three-point suspension mechanism of the tractor. A column having a stopper at the upper end is erected at the center position of the weight balance of the frame, and a hollow cylindrical support body through which the column is inserted so as to be able to rise and fall and rotate freely is fixed to the middle part of the connecting frame, and An inverted U-shape that is removably fitted to the left and right sides of the main frame of the machine frame on the left and right sides of the connecting frame, and the support body is engaged with the stopper and separated from the left and right sides of the main frame. A locking pin for locking the main frame is inserted into the left and right connectors so that they can be inserted and removed in the front and rear directions.

(Function) When the tilling rotary of the present invention is switched from the down-cut direction to the up-cut direction and rotationally driven, when the locking pins are pulled out from the left and right connections of the connection frame, the left and right connections are removed. The lower surface of the body is open.

Then, when the three-point suspension mechanism of the tractor is raised, the support of the connecting frame is lifted along the support column, and the left and right connecting bodies of the connecting frame are separated upward from the main frame of the machine frame. The support is locked to a stopper at the upper end of the column. When the three-point suspension mechanism is further raised, the entire soil tiller is lifted up via the support by the support member engaged with the stopper, and the tiller rotary is separated from the ground. In this state, the tilling rotary is lowered and landed when the three-point suspension mechanism is lowered after rotating the entire soil tilling machine 180 degrees around the support via the pillars and switching the front and back directions. At the same time, the supporting bodies of the connecting frame are lowered along the pillars and reach a predetermined position, and at the same time, the left and right connecting bodies of the connecting frame are fitted into the main frame of the machine frame. Then, the locking pins are inserted into the through holes of the left and right connectors, respectively. Thereby, by lifting and rotating the tilling and crushing machine without changing the direction of the tractor, the tilling rotary is converted from a downcut direction to an upcut direction.

(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.

In the figure, 1 is a machine frame, and this machine frame 1 has chain cases 2 at both left and right ends of the main frame extending in the left and right direction.
and a bracket 3 are mounted facing each other, and between the lower ends of the left and right chain case 2 and the bracket 3 is a tilling shaft 4 and tilling claws 5 protruding radially from the circumferential side of the tilling shaft 4 in the axial direction. A tilling rotary 6 consisting of a tilling rotary 6 is rotatably mounted on the tilling shaft 4,
A cover body 7 covering the upper part of the tilling rotary 6 is fixed between the chain case 2 and the bracket 3, and leveling plates 9, 9 are attached to the front and rear ends of the cover body 7 via hinges 8, respectively. The front and rear leveling plates 9, 9 are attached to be vertically movable, and are connected to connecting rods 10, 10 and coil springs 11, 11.
It is elastically supported on the cover body 7 via the above-mentioned cover body 7 so that its height can be freely adjusted.

In addition, a transmission 14 has input shafts 12 and 13 protruding from the center of the main frame of the machine frame 1 in the longitudinal direction.
A transmission case 15 containing a built-in is attached,
A support 16 is integrally erected at the center position of the weight balance of the main frame in the machine frame 1, that is, the center position of the transmission case 15.
A stopper 17 with a larger diameter than the support column 16 is located at the upper end of the
are integrally formed.

Further, 18 is a connecting frame body, and this connecting frame body 18 is
Left and right lower arms 20, 20 having lower pins 19, 19 protruding from their tips are connected to both ends of a horizontal rod 21 and are arranged parallel to each other.
Connecting bodies 22, 22 having an inverted U-shape with downward openings are integrally fixed to the lower part of the rear end of the machine frame 1 in the lower part of the rear end thereof. 22, 22 are insertion holes 24, 24 at the lower ends of the opposing front and rear clamping pieces 23, 23.
are bored facing each other, and the front and rear insertion holes 24, 2
4, and locking pins 25, 25 that can be freely inserted and removed, and locking pins 26, 26 corresponding to the locking pins 25, 25. Further, a hollow cylindrical support body 27 through which the support column 16 is inserted so as to be able to rise and fall and rotate freely is fixed to the intermediate portion of the horizontal rod 21 that supports the left and right lower arms 20, 20 via support frames 28, 28. , connecting portions 30, 30 are attached to the tips of the masts 29, 29 whose rear ends are fixed to the support frames 28, 28.
The masts 29, 29 and the left and right lower arms 20, 20 are connected by connecting pieces 31, 31.

In the structure configured in this way, when the tilling rotary 6 is rotationally driven in the downcut direction, as shown in FIG. Connecting frame 1 attached to machine frame 1 at the rear end
8 left and right lower pins 19, 19 and connecting portion 30
At the same time, one input shaft 12 is connected to the power take-off shaft of the tractor via an interlocking medium such as a universal joint. Then, the tilling rotary 6 is rotated in the downcut direction by driving the tilling rotary 6 in conjunction with the power input to the input shaft 12 from the power output shaft of the tractor while towing the tilling soil crusher by the tractor. The rotary 6 plows and crushes soil in the field one after another.

Next, when rotating the tilling rotary 6 in the upcut direction, in the state shown in FIG. When pulled out from the front and rear clamping pieces 23, 23, respectively,
The lower surfaces of the left and right connecting bodies 22, 22 are open. Also, the interlocking medium of the power transmission shaft portion is removed from the input shaft 12.

Next, when the three-point suspension mechanism of the tractor is raised, the support 27 of the connecting frame 18 connected to the left and right lower links A, A and the top link B is lifted along the column 16, and the supporting body 27 of the connecting frame 18 is lifted along the column 16. The left and right connecting bodies 22, 22 are separated upward from the main frame of the machine frame 1, and the support body 27 is locked to the stopper 17 at the upper end of the column. When the three-point suspension mechanism is further raised, the entire soil tiller is lifted up via the support 16 by the support 27 that is engaged with the stopper 17, and the tiller rotary 6 is separated from the ground. In this state, the entire tiller and crusher is rotated 180 degrees around the support body 27 via the pillar 16 to change its front and rear directions, and then
When the three-point suspension mechanism is lowered, the tilling rotary 6
is lowered and landed, and the connecting frame 18
The supporting bodies 27 are lowered along the pillars 16 and reach a predetermined position, and at the same time, the left and right connecting bodies 2 of the connecting frame 18 are lowered.
2 and 22 are fitted into the main frame of the machine frame 1. And the front and rear clamping pieces 2 of the left and right connecting bodies 22, 22
The locking pins 25, 25 are inserted into the insertion holes 24, 24 drilled in the locking pins 3, 23, respectively, and the locking pins 26, 26 are inserted into the insertion holes of the locking pins 25, 25, thereby connecting the locking pins 25, 25. Ru. Further, the other input shaft 13 is interlockingly connected to the power output shaft portion of the tractor via an interlocking medium. As a result, by lifting and rotating the tilling rotary 6 without changing the direction of the tractor, the tilling rotary 6 can be converted from the down cut direction to the up cut direction. In other words, the connecting frame 18 can be rotated as shown in the solid line in FIG. The orientation is converted to a state similar to that shown by the chain line. By rotationally driving the tilling rotary 6, the tilling rotary 6 is rotationally driven in the upcut direction, and the field is sequentially tilled and crushed by the tilling rotary 6.

In the above case, the height of the leveling plates 9 elastically supported at the front and rear of the cover body 7 is adjusted as appropriate to make them function.
Although not shown in the drawings, in implementation, the cover body 7
A screen may be attached to the

[Effect of idea]

According to the present invention, when switching the direction of rotation of the tilling rotary, the hollow cylindrical support is removed by pulling out the locking pin from the left and right connecting bodies and lifting the connecting frame using the tractor's three-point suspension mechanism. The tiller is lifted up along the support and is locked to the stopper of the support, and the left and right connecting bodies are securely spaced apart from each other on the main frame of the machine frame.Then, with the tiller and crusher lifted up, the tiller is used as a support. By pivoting about the supported column, the tiller can be easily turned around to set its tiller rotary in the up-cut or down-cut direction, in which case it is not locked as in the prior art. Switching operations are easy because there is no need to rotate the left and right connectors, that is, the left and right mating bodies after pulling out the pin, and the structure is simple and easy to manufacture, so handling is easy and work is easy. It is possible to provide a tiller and crusher with excellent performance.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention. Figure 1 is a side view of the tiller, Figure 2 is a plan view of the same, and Figure 3 is a side view of the tiller.
The figure is a perspective view of the connection frame body same as the above. 1... Machine frame, 6... Tilling rotary, 7... Cover body, 12, 13... Input shaft, 14... Mission, 16... Support column, 17... Stopper, 18...
Connection frame body, 22... Connection body, 25... Locking pin,
27...Support.

Claims (1)

[Scope of Claim for Utility Model Registration] A tilling rotary whose upper part is covered with a cover body is rotatably provided, an input shaft is provided protruding in the front and back direction, and power from either of the input shafts is transmitted to the tilling rotary. The machine frame includes a machine frame provided with a transmission mechanism, and a connecting frame body that is rotatably connected to the machine frame and is connected to the three-point suspension mechanism of the tractor. A support with a stopper is erected at the top, and a hollow cylindrical support through which the support can be vertically and rotatably inserted is fixed to the middle part of the connection frame, and the machine is attached to the left and right sides of the connection frame. An inverted U-shaped connecting body that is removably fitted to the left and right sides of the main frame of the frame, and the support body is locked to the stopper and spaced apart from the left and right sides of the main frame; A tilling and crushing machine characterized in that a locking pin for locking the main frame is inserted into the connecting body so as to be freely insertable and removable in the front and rear directions.