JPH06335303A - Land-grading device of agricultural machine - Google Patents

Abstract

PURPOSE:To largely improve the operability of the land-grading device of an agricultural machine by enabling to remotely, simply and surely perform the rotation operation of extending land-grading members and to simply attach the extending land-grading members to an existing land grading device. CONSTITUTION:A land-grading member-operating means 23 for folding up an extending land-grading member 17 on the second land-grading member 14 and for returning the folded extending land-grading member in the extending direction of the second land-grading member 14 is disposed. In the land-grading member-operating means 23, an interlocking arm 26 is rotatably and pivotally supported on a bracket 25 attached to a frame 1. The extending land-grading member 17 is connected to the interlocking arm 26 through a wire 29. A forward-backward rotation motor for rotating the interlocking arm 26 is disposed on the bracket 25. A switch 34 for remotely operating the motor 31 is disposed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leveling device for agricultural working machines, and more particularly to a leveling device for leveling the surface of cultivated soil over a width wider than the working width of a rotary working body.

[0002]

2. Description of the Related Art Conventionally, as a ground leveling apparatus for this type of agricultural working machine, for example, as described in Japanese Utility Model Publication No. 60-18001, a rotary working body is rotatably provided on a machine frame, A cover body covering the upper part of the rotary work body is provided on the rear side of the rotary work body, and the rear end of the cover body is provided with the cover body for leveling the tilled soil cultivated by the rotary work body. Attach the ground plate rotatably in the vertical direction, and pivot the extension ground plate to the left and right ends of the ground plate with the front and rear support shafts so that the ground plate can rotate in the left and right directions. , One end of an operation rope for remote operation that folds and turns the extension grounding plate on the grounding plate and returns and rotates in the extension direction of the grounding plate is fixed, and the other end of the operation rope is also fixed. The operation part of the control unit in the driver's seat of the work machine Structure is known.

[0003]

In the structure described in the above publication, the operation rope is remotely operated to fold and rotate the extended ground leveling plate on the ground leveling plate and to return and rotate the extension ground leveling plate in the extending direction of the ground leveling plate. However, at this time, a strong pulling force is required to operate the operation rope, and it is not uncommon for the operation rope to be rotated by this operation rope. There is a problem that the turning operation is often difficult. Although it is conceivable to rotate the extended ground leveling plate by hydraulic pressure, this means has a problem that the cost is increased.

The present invention has been made in view of the above points, and the ground leveling body manipulating means can remotely and simply and reliably rotate the extended ground leveling body. It is easy to operate, and even an old man or a woman can easily rotate the extended ground leveling body, it can be easily attached to existing products, the structure is simple and the cost is particularly high. Therefore, it is an object of the present invention to provide a land leveling device for an agricultural work machine, which has a significantly improved operability as compared with a device in which an operation rope is remotely operated to rotate an extended ground leveling plate.

[0005]

A land leveling apparatus for agricultural work machines according to the present invention comprises a machine frame provided with a rotary work body rotatably,
A cover body provided on the machine frame and covering an upper portion of the rotary working body, and a cover body located at a rear portion of the rotary working body and rotatably attached to the cover body in a vertical direction, to the rotary working body. The ground leveling body for leveling the cultivated soil that has been cultivated, the extended leveling body that is rotatably supported in the left and right direction by at least one end portion in the left and right direction of the leveling body by the front and rear support shafts, and this extended leveling level. A ground leveling body operating means for folding and rotating the body on the ground leveling body and returning to rotate in the extension direction of the ground leveling body, wherein the ground leveling body operation means is attached to the machine casing. For forward / reverse rotation in which a bracket is provided, an interlocking arm is rotatably supported by the bracket, the extension ground leveling body is connected to the interlocking arm via an interlocking body, and the interlocking arm is pivoted on the bracket. Provide a motor and control this motor It is provided with a switch for remote control of.

[0006]

In the leveling apparatus for agricultural work machines according to the present invention, when the ground leveling operation is performed, the switch is turned on to operate the motor, and the interlocking arm is rotated about the spindle by the rotational drive of the motor in the normal direction. The extended ground leveling body is rotated, and the extension ground leveling body is pulled and interlocked by the interlocking body by the interlocking arm, and the extension ground leveling body is rotated around the support shaft in the front-rear direction. It is returned and rotated horizontally in the extension direction. Then, a series of ground leveling parts having a width wider than the working width of the rotary working body is formed by the leveling body and the extended leveling body, and the plowing soil cultivated by the rotation of the rotary working body is sequentially leveled at the series of ground leveling parts. To be done.

When the switch is turned on and the motor is operated at the time of moving the ridge or traveling on the road, the interlocking arm is driven by the rotation of the motor in the reverse rotation direction, which is the opposite of the above case. The extension ground leveling body is rotated by the interlocking body by the interlocking arm, and the extension ground leveling body is rotated about a support shaft in the front-rear direction. It is folded and rotated toward the upper part. Then, the extended ground leveling body is superposed on both ends of the ground leveling body, and the width of action of a series of ground leveling portions is reduced, so that the extension ground leveling body is prevented from obstructing the movement of the ridge and the road traveling.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of an embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a machine frame, which has a main frame 2 made of a hollow pipe which is long in the left-right direction, and an input shaft 3 is rotated forward in an intermediate portion of the main frame 2. The main frame 2 is provided with a freely projecting mission 4.
A connecting frame 5 is integrally connected to both sides of the front side.

Further, the upper ends of a transmission case 6 and a bracket 7 which are disposed opposite to each other are integrally fixed to both ends of the main frame 2, and between the lower ends of the transmission case 6 and the bracket 7. The rotary work body 8 is rotatably supported. Then, the rotary work body 8 is rotationally driven by the output from the mission 4 through the output shaft 9 of the mission 4 and the interlocking medium in the transmission case 6 that is interlockingly connected to the output shaft 9. ing.

Further, a cover body 10 as a machine frame covering the upper portion of the rotary working body 8 is integrally fixed between the transmission case 6 and the bracket 7 of the machine frame 1,
Hinges 11 are provided on the rear side of the rotary working body 8 on both sides of the rear end of the cover body 10 and have a plate-like first working width having a working width substantially the same as the working width of the rotary working body 8. The ground leveling body 12 is rotatably connected in the up-down direction, and a plate-like shape having a working width approximately the same as the working width of the rotary working body 8 by hinges 13 on both lower end sides of the first ground leveling body 12. The second ground leveling body 14 is rotatably connected in the vertical direction.

Further, a pair of connecting pieces 15 are integrally provided upright on the upper ends of both ends of the second leveling body 14 so as to face each other in the front-rear direction. Mounting pieces lower than the height of the connecting piece 15 are provided on both upper ends of the ground leveling body 14 of No. 2.
16 are erected integrally. Further, extended ground leveling bodies 17 are arranged at both ends of the second ground leveling body 14 in the extending direction thereof.

The extended ground leveling bodies 17 at both ends are formed to have the same shape as the second ground leveling body 14, although they are shorter than the second ground leveling body 14, and a pair of connecting pieces 18 are arranged in front of and behind the inner ends of the second ground leveling bodies 14. The projecting pieces 19 are integrally formed on the upper ends of the pair of connecting pieces 18 toward the pair of connecting pieces 15, respectively, and the projecting pieces 19 are located on the rear side of the connecting pieces 18 at the rear portion. Mounting pieces 20 lower than the height of the connecting pieces 18 are integrally erected on both upper ends of the extended ground body 17, respectively.

Further, the projections 19 of the pair of connecting pieces 18 of the extended ground leveling bodies 17 at the both ends are engaged with the pair of connecting pieces 15 at the upper ends of the second ground leveling body 14, and the pair of connection pieces 15 are connected. A support shaft 21 in the front-rear direction is inserted between the piece 15 and the projecting piece 19 of the pair of connecting pieces 18. A coil spring 22 is stretched between the mounting piece 16 of the second ground leveling body 14 and the mounting pieces 20 of the extended ground leveling bodies 17 at both ends.

The extended ground leveling bodies 17 at both ends of the second ground leveling body 14 are the coil springs.
It is rotatably supported in the left-right direction around the support shaft 21 against 22 and the extended ground leveling bodies 17 at both ends thereof are folded and rotated relative to the second ground leveling body 14. 2 Plains 14
It is designed to be rotated back to the extension direction of
The extended ground leveling bodies 17 at both ends in these states are biased and held by the coil springs 22, respectively.

Next, the ground leveling body operating means 23 is provided at both ends of the main frame 2. The ground leveling body operating means 23 at both ends has a bracket 25 connected to the main frame 2 by a connecting metal fitting 24, and at the rear end of the bracket 25, an interlocking arm 26 which is long in the front-rear direction is arranged in the vertical direction. A shaft 27 is rotatably supported in the left-right direction by a support shaft 27. A gear body 28 is formed at the base end of the interlocking arm 26, and a wire as an interlocking body is provided at the tip end of the interlocking arm 26. One end of the wire 29 is fixed, and the other end of the wire 29 is fixed to a projecting piece 30 projecting from the outer end of the extended grounded body 17.

A forward / reverse rotation motor 31 is fixed to the front side of the bracket 25, and a worm gear 32 rotatably mounted on the motor 31 is meshed with a pinion 33.
The pinion 33 has teeth 28 of the gear body 28 of the interlocking arm 26.
a is engaged. Further, a switch 34 for remote operation for controlling the motor 31 is connected to the motor 31, and the switch 34 is provided, for example, in an operation section of a driver's seat (not shown) of an agricultural working machine such as a tractor. Then, the operation of the motor 31 is controlled by the opening / closing operation of the switch 34, the interlocking arm 26 is rotated in the left-right direction about the support shaft 27, and the extended grounded bodies 17 at the both ends are moved to the second
It is adapted to be folded and rotated with respect to the ground leveling body 14 and returned and rotated in the extension direction of the second ground leveling body 14.

Further, stoppers 35 and 36 are respectively provided on the bracket 25 so as to project at the left and right sides of the support shaft 27. The left and right stoppers 35 and 36 cause the interlocking arm 26 to move in the left and right direction. It is designed to stop the rotation to. Then, the interlocking arm 26 is rotated, and the interlocking arm 26 is brought into contact with one of the left and right stoppers 35 and 36 according to the rotational direction, so that the load resistance against the rotation of the motor 31 increases. , The motor
31 is designed to stop operating.

Next, the operation of the above embodiment will be described.

The connecting frame 5 is connected to the suspension mechanism of the tractor, and the input shaft 3 of the mission 4 is connected to the PTO shaft of the tractor via the power transmission shaft.

Next, when performing ground leveling work, the switch 34 is turned on to operate the motors 31 on both sides to drive the motors 31 on both sides to rotate in the forward direction. The worm gears 32 are rotated, and the gear bodies 28 of the interlocking arms 26 on both sides are interlocked by the worm gears 32 via the pinions 33.
Are respectively rotated around the support shaft 27 in the extension direction of the second ground leveling body 14, and the extension ground leveling bodies 17 at both ends are pulled and interlocked via the wires 29 by the interlocking arms 26 on both sides thereof. It

The extended ground leveling bodies 17 at both ends are rotated in the extensional direction of the second ground leveling body 14 against the respective coil springs 22 around the respective support shafts 21 in the front-rear direction. The extended leveling body 17 at both ends is the second leveling body 14
Is returned and rotated horizontally in the extension direction of both ends of the. Then, the second leveling body 14 and the extended leveling bodies 17 at both ends form a series of ground leveling portions having a width wider than the working width of the rotary working body 8.

Further, the interlocking arms 26 on both sides are largely rotated in the extension direction of the second ground leveling body 14, and the interlocking arms 26 on both sides are brought into contact with the stopper 35 located on the outer side. As a result, the load resistance against the rotation of the motors 31 on both sides increases, and the motors 31 on both sides automatically stop.

When the tractor pulls the machine through the connecting frame 5 and the input from the PTO shaft of the tractor rotates the input shaft 3 of the mission 4 through the power transmission shaft, the mission 4 The output shaft 9 is rotated, the rotary work body 8 is rotationally driven by the output shaft 9 through the interlocking medium of the transmission case 6, the rotary work body 8 cultivates the field, and the cultivated soil is covered. body
While being guided by 10 and dropped along the first leveling body 12 and the second leveling body 14, from the second leveling body 14 and the extension leveling bodies 17 at both ends of the second leveling body 14 The cultivated soil cultivated by the rotation of the rotary working body 8 is sequentially conditioned on a series of ground leveling parts.

Next, when moving along the ridge or traveling on the road,
When the switch 34 is turned on to operate the motors 31 on both sides to rotate the motors 31 on both sides in the reverse rotation direction, the worm gears 32 of the motors 31 on both sides are rotated in the opposite directions to the above-mentioned cases. , The gear bodies 28 of the interlocking arms 26 on both sides are interlocked by the worm gears 32 via the pinions 33, and the interlocking arms 26 on both sides face the second leveling body 14 around the support shaft 27 respectively. It is rotated, and the extended ground leveling bodies 17 at both ends are pulled and interlocked by the interlocking arms 26 on both sides via wires 29.

Then, the extended leveling bodies 17 at both ends are folded and pivoted on the second leveling bodies 14 against the respective coil springs 22 around the respective support shafts 21 in the front-rear direction. The sectioned ground leveling bodies 17 are superposed on both ends of the second ground leveling body 14, and the action width of the series of ground leveling sections is reduced by the amount excluding the extended ground leveling bodies 17 at both ends.

Further, the interlocking arms 26 on both sides are largely folded and rotated toward the second ground leveling body 14, and the interlocking arms 26 on both sides are brought into contact with the stoppers 36 located on the inner side. The load resistance to the rotation of the motors 31 on both sides increases, and the motors 31 on both sides automatically stop.

In this way, the extended leveling bodies 17 at both ends are superposed on both ends of the second leveling body 14 to reduce the working width of a series of ground leveling portions, whereby the extended leveling at both ends are extended. It is possible to prevent the body 17 from hindering the movement of the ridge and the road traveling.

In the above embodiment, the case where the ground leveling body operating means 23 is attached to the main frame 2 has been described, but the present invention is not limited to this.
The leveling body operating means 23 may be attached to the cover body 10.

[0030]

According to the present invention, the ground leveling body operating means for folding and rotating the extended ground leveling body on the ground leveling body and for returning and rotating the extension ground leveling body in the extension direction of the ground leveling body is provided. A bracket attached to the machine frame, the interlocking arm is rotatably supported on the bracket, and the extended ground leveling body is connected to the interlocking arm via the interlocking body, and the interlocking arm is connected to the bracket. Since a forward / reverse rotation motor for rotating the motor is provided and a remote control switch for controlling the motor is provided, the operation of rotating the extended ground body can be remotely and easily and reliably performed by the ground body operation means. The operation of the ground leveling body operation means is simple, and even an old man or a woman can easily rotate and operate the extension ground leveling body, and can be easily attached to existing products. Is easy and can increase costs Without, therefore, it is possible to greatly improve the operability than the extended leveling plate operation rope by remote control to the one operated for rotation.

[Brief description of drawings]

FIG. 1 is a perspective view of a ground leveling device for an agricultural work machine showing an embodiment of the present invention.

FIG. 2 is a partial plan view of the same.

FIG. 3 is a sectional view taken along line a-a of the above.

[Explanation of symbols]

 1 Machine frame 8 Rotary work body 10 Cover body 12 First leveling body 14 Second leveling body 17 Extended leveling body 21 Support shaft 23 Leveling body operating means 25 Bracket 26 Interlocking arm 29 Wire as interlocking body 31 Motor 34 Switch

Claims (1)

[Claims] 1. A machine frame in which a rotary work body is rotatably provided, a cover body provided in the machine frame and covering an upper portion of the rotary work body, and a cover located at a rear portion of the rotary work body. A leveling body that is attached to the cover body in a vertically rotatable manner to level the cultivated soil cultivated by the rotary work body, and a left and right support shaft at least at one end in the left and right direction of the leveling body. An extended ground leveling body that is pivotally supported in a direction, and a ground leveling body operating means that folds the extended ground leveling body on the ground leveling body and rotates the return leveling in the extension direction of the ground leveling body. The ground leveling body operating means has a bracket attached to the machine frame, and an interlocking arm is rotatably supported by the bracket, and the extended ground leveling body is supported by the interlocking arm via the interlocking body. And the interlocking with the bracket The forward and reverse rotation motor provided for rotating the over arm, leveling device agricultural machine, characterized in that a switch for remotely controlling the motor.