JPS6219125Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a powered harrow.

[Conventional technology]

Conventionally, a power harrow has a structure in which a leveling plate is provided and a leveling plate is fixedly attached to the leveling plate. The tilled soil is leveled by the leveling plate.

[Problem that the invention attempts to solve]

When plowing work is performed using a power harrow with the above structure, when the plowing platform is uneven or the furrow edges are high due to tilling, the leveling plate will follow the horizontal inclination of the power harrow and tilt horizontally. It is not possible to level the cultivated soil surface, and when the leveling plate is not in use, the leveling plate hangs downward, lowering the ground clearance, and when driving over a ridge or on the road, it is possible to hit the ridge or road surface. There is a problem.

Therefore, this invention was made in view of the above points,
The object of the present invention is to provide a power harrow in which a ground leveling plate is movably provided and the height above the ground of the ground leveling plate can be changed depending on whether the ground leveling plate is working or not working.

[Means for solving problems]

The power harrow of the present invention includes a main body frame, a rotary work body rotatably provided on the main body frame, a cover body covering the upper part of the rotary work body, and a rear end portion of the cover body arranged in a vertical direction. A leveling plate rotatably attached, guide pieces on both sides fixed to opposite sides of the rear upper position of the leveling plate and forming long guide grooves in the vertical direction, and inside the long guide grooves of the guide pieces on both sides. an elevating rod that is inserted through the elevating rod so as to be able to move up and down; a leveling plate that is rotatably attached to both sides of the elevating rod with connecting pieces on both sides disposed at the rear of the leveling plate and protruding from the upper portions of both sides; A handle is rotatably provided at the front part of the main body frame via a connecting frame, and is provided with a handle for raising and lowering the elevating rod via a wire to lift the ground leveling plate onto the leveling plate.

[Effect]

According to the power harrow of the present invention, during plowing work, a ground leveling plate is disposed at the rear of the leveling plate, and this leveling plate levels the cultivated soil surface that has been tilled and crushed by the rotary work body following the leveling plate.

In addition, when doing work other than plowing, such as raising a ridge or driving on the road, operate the handle and pull up the lifting rod along the long guide groove via the wire, and the connecting piece will be connected to both sides of the lifting rod. At the same time, the leveling plate attached to the leveling plate is lifted up so that it overlaps with the leveling plate.

This provides the necessary ground clearance for raising ridges or driving on the road.

〔Example〕

Next, the structure of one embodiment of the present invention will be explained based on the drawings.

1 is a main body frame formed in a hollow cylindrical shape,
A transmission 3 having an input shaft 2 is attached to an intermediate portion of the main body frame 1. Further, an upper end of a chain case 5 is fixed to one end of the main body frame 1 via a mounting plate 4, and an upper end of a bracket 6 is fixed to the other end of the main body frame 1, facing the chain case 5. A tilling shaft 7 is rotatably attached between the bracket 6 and the lower end of the chain case 5.
Tilling claws 8 are radially protruded from the circumferential side of the tilling shaft 7 in the axial direction, and a rotary work body 9 is constituted by the tilling shaft 7 and each of the tilling claws 8.

Further, one end of an output shaft 10 provided within the main body frame 1 is interlocked and connected to the input shaft 2, and the other end of this output shaft 10 projects into the chain case 5. An endless chain 11 is rotatably suspended between the sprocket attached to the bottom end of the tiller shaft 7 and the sprocket of the tilling shaft 7 projected into the lower end of the chain case 5. The rotary work body 9 is attached to the transmission 3.
are rotatably connected.

Next, a cover body 12 that covers the upper part of the rotary work body 9 is fixed between the chain case 5 and the bracket 6, and a flat plate 13 that also serves as a rear cover is attached to the rear end of the cover body 12.
is attached so as to be freely rotatable in the vertical direction, and this leveling plate 1
Guide pieces 14 are integrally fixed to both sides of the rear upper position of the housing 3 in the vertical direction and facing each other, and long guide grooves 15 are formed in the guide pieces 14 on both sides in the vertical direction. Also, inside the long guide grooves 15 on both sides, there are lifting rods 1.
6 is inserted through the vertically movable base end of a locking protrusion 17 at the middle part of the lifting rod 16, and the upper end of a connecting piece 18 is attached to both sides of the lifting rod 16. The flat plate 13 is rotatably attached to the lower end of the connecting piece 18 on both sides.
A ground leveling plate 19 disposed at the rear of the machine is rotatably attached to a horizontal shaft 20. This leveling plate 19 is formed into a long and narrow shape with a length corresponding to the width of the leveling plate 13, and at both ends thereof, support shafts 21 in the front-rear direction are provided with protruding pieces 22 protruding opposite to each other in the width direction. An L-shaped connecting piece 24 protruding from the inner end of the extended ground leveling plate 23 is rotatably attached to the support shafts 21 on both sides, and the connecting piece 24 and the outer end of the leveling plate 19 are connected to each other. A coil spring 25 is stretched between the ground leveling plate 19 and the ground leveling plate 19, and the extended ground leveling plate 23 is normally held in the extending direction of the leveling plate 19 by the coil spring 25.

Next, a lower arm 27 having a lower pin 26 at its tip protrudes from both sides of the main body frame 1 to sandwich the transmission 3 therebetween, and a connecting portion 28 at the tip of the transmission 3 is provided.
Top arm 29 as a connecting frame having
This top arm 29 and the lower arm 27 are connected by a stay 30. A locking body 31 is protruded from one side of the tip of the top arm 29, and a base end of a handle 32 is rotatably attached to the locking body 31. A locking recess 33 for locking and releasing the locking body 31 is formed at the front and rear of the locking body 31.
Further, one end of a wire 34 is locked in the middle of this handle 32, and this wire 34
The other end of the wire 34 is locked to the tip of the locking protrusion 17 of the lifting rod 16, and the middle of the wire 34 is inserted through a guide 35 projecting from the top arm 29. Furthermore, the wire 36 latched to the tip of the top arm 29 is attached to the main body frame 1.
It is locked near the outer end of the extended leveling plate 23 via hooks 37 protruding from both sides of the plate.

Next, the operation of the above structure will be explained.

During work, the lower pins 26 and connecting portions 28 on both sides are connected to the three-point suspension mechanism of the tractor, and the input shaft 2 of the transmission 3 is connected to the output shaft of the tractor via a universal joint.
Further, the handle 32 is rotated so that the handle 32 is inserted into the locking recess 33 on the rear side of the locking body 31 as shown in FIG.
Lock in the middle of 2. This allows the wire 34
is relaxed and the elevating rod 16 descends within the long guide grooves 15 on both sides, and the leveling plate 19 attached to the elevating rod 16 via the connecting pieces 18 on both sides is lowered.
It is arranged at the rear of the lower end of the leveling plate 13. Further, when the wires 36 on both sides are pulled, the extended ground leveling plates 23 on both sides are projected in the extending direction of the leveling plate 19.

In this state, when the tractor is driven to pull the power harrow and the input shaft 2 is interlocked with the output shaft of the tractor through the universal joint, the power is transmitted through the transmission 3, the output shaft 10, and the endless chain 11. The rotary work body 9 is interlocked and driven, and the rotary work body 9 advances while plowing and crushing the field, and the tilled and crushed soil is leveled by the leveling plate 13, the leveling plate 19, and the extended leveling plate 23. turned into earth.

In this case, even if the tractor or power harrow tilts laterally depending on the working conditions in the field, the leveling plate 19 is attached via the connecting piece 18 to the lifting rod 16 that moves up and down in the long guide grooves 15 on both sides. Since it is in a free state in the direction and left and right directions, it swings up and down and left and right independently without following the left and right movements of the tractor or power harrow, and progresses while leveling and leveling the cultivated soil smoothly. .

Next, when not in operation, the handle 32 is rotated forward and part of the handle 32 is locked in the locking recess 33 on the front side of the locking body 31 as shown in FIG.
As a result, the wire 34 is pulled and the elevating rod 16 is pulled up to the upper part of the guide grooves 15 on both sides, and the connecting pieces 18 on both sides are attached to the elevating rod 16.
The leveling plate 19 attached via the leveling plate 19 is lifted onto the rear part of the leveling plate 13 and overlapped with it, thus obtaining the ground clearance necessary for crossing ridges and driving on the road. In addition, by pulling the wire 36, the extended ground plate 23 rotates inward about the support shaft 21, and the leveling ground plate 19
The length of the ground leveling plate 19 is shortened so that it does not get in the way when driving on the road.

[Effects of the invention] According to the invention, a leveling plate is provided at the rear end of the cover body covering the upper part of the rotary work body so as to be rotatable in the vertical direction, and guide grooves are provided on both sides of the rear upper position of the leveling plate. Guide pieces formed in the vertical direction are fixed facing each other, and both sides of the leveling plate are arranged at the rear of the leveling plate on both sides of the elevating rod, which is vertically movably inserted into the guide grooves of the guide pieces on both sides. The connecting piece is rotatably attached, and a handle for raising and lowering the lifting rod via a wire is rotatably provided on the connecting frame at the front of the main body frame. When the support is released, the lifting rods fall to the bottom of the long guide grooves on both sides, and the leveling plate is placed at the rear of the leveling plate due to its own weight, and is able to swing vertically through the lifting rods that move up and down within the long guide grooves on both sides. Therefore, even if the power harrow tilts sideways due to uneven tillage or high ridge edges, the leveling plate will not follow it and will swing freely to follow the tilled soil surface. In addition, this leveling plate is connected to a lifting rod that is inserted into vertical guide grooves on both sides so as to be able to move up and down, so the leveling plate can be moved vertically and horizontally. The movable motion is free and large, and therefore the leveling plate operates without being directly influenced by the motion of the power harrow, and the cultivated soil can always be leveled in an orderly manner without forming large irregularities on the cultivated soil surface. In addition, in an emergency, when the handle is operated and the lifting rod is pulled up and held at the top of the long guide groove via the wire, the leveling plate connected to the lifting rod is similarly pulled up and superimposed on the rear part of the leveling plate, so that it is leveled. The ground plate is spaced far above the ground, making it easy to obtain the ground clearance necessary for running over ridges and on the road, and the leveling plate does not interfere with running when not working. Therefore, the height above the ground of the ground leveling plate can be easily changed depending on whether it is being worked or not, so it is possible to provide a power harrow that is easy to handle.

[Brief explanation of drawings]

The figures show an embodiment of the present invention; FIG. 1 is a tilted view of the power harrow when it is in operation, and FIG. 2 is a tilted view of the power harrow when it is not in operation. 1...Main frame, 9...Rotary work body,
12... Cover body, 13... Flat plate, 14... Guide piece, 15... Guide long groove, 16... Lifting rod, 19
... Leveling plate, 29 ... Connection frame, 32 ... Handle, 34 ... Wire.

Claims (1)

[Scope of utility model registration request] A main body frame, a rotary work body rotatably provided on the main body frame, a cover body covering the upper part of the rotary work body, and a cover body attached to the rear end of the cover body so as to be rotatable in the vertical direction. a leveling plate, a guide piece on both sides fixed oppositely to both sides of the rear upper position of the leveling plate and having a long guide groove formed in the vertical direction; a leveling plate having connection pieces on both sides arranged at the rear of the leveling plate and protruding from the upper portions of both sides rotatably attached to both sides of the leveling plate;
It is characterized by comprising a handle which is rotatably provided at the front part of the main body frame via a connecting frame and which operates the lifting rod up and down via a wire to lift the ground leveling plate onto the leveling plate. Powered harrow.