JPS6379504A - Rotary plowing apparatus - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Field of Application) The present invention relates to a rotary tillage device, which continuously plows and inverts buried soil in multiple rows using a plurality of cultivation desks. Regarding.

(Prior Art) Conventionally, as this type of rotary tiller, a structure described in, for example, Japanese Utility Model Application Publication No. 61-56802 is known. This structure connects a cylindrical support body with the output shaft of the mission rotatably inserted through the lower part of the mission case containing the mission, and multiple desks are installed in parallel at the lower end of this support body. A cylindrical rotating body having an axially mounted drive shaft is fitted and inserted, the drive shaft is interlocked and connected to the output shaft, and the rotating body is connected to the support body so that its engaging protrusion is on either the left or right side of the support body. The desks are rotated until they engage one of the stoppers to set the plurality of desks in a rightward tilting state or a leftward tilting state in the direction of travel, and this set position is connected and fixed with a lock bin and a fixing screw.

(Problems to be Solved by the Invention) According to the above-mentioned conventional structure, setting the rotation of the plurality of desks to the rightward tilting state or the leftward tilting state requires manual operation. The inclination angles of the plurality of desks are determined by the engaging protrusions of the rotary body engaging with the left and right stoppers of the support body, so the inclination angles are always constant, which is disadvantageous.For example, in the case of flat plowing It is not possible to variably adjust the inclination angle according to the case of ridge break plowing and the case of ridge breaking plowing, and furthermore, there is a problem that the lock bin and fixing screw must be attached and detached to change the direction of multiple desks. be.

Therefore, the present invention was made in view of these points,
The direction of multiple desks can be changed automatically, the inclination angle of multiple desks can be variably adjusted according to the purpose of work, and the direction of multiple desks can be easily changed. It is an object of the present invention to provide a rotary tiller in which a drive desk tiller body having a desk is supported by a tail wheel, and the tail wheel is always oriented in a straight direction.

[Structure of the invention]

(Means for Solving the Problems) The rotary tilling device of the present invention is provided with a transmission having an input shaft protruding toward the rear and an output shaft protruding rearward at the front of the main body frame, and a transmission from the rear of the main body frame. A connecting frame is provided to be horizontally rotatable via a rotation center shaft, and a plurality of desks for continuously plowing and reversing the buried soil are mounted on this connecting frame in parallel to the drive shaft. A drive desk cultivating body provided with an input shaft for transmitting power to the drive shaft is attached, and a universal joint at both ends of the telescopic power transmission shaft is connected to the input shaft of the drive desk cultivating body and the output shaft of the transmission. The distal end of an actuator connected to the body frame and rotatably attached to one side of the main body frame is rotatably attached to the connecting frame, and the actuator plows the drive deck around the rotation center axis. The body is turned around and the driving desk cultivating body is set and held at a predetermined inclination angle, and a tail wheel is freely rotatable at the rear via a connecting shaft perpendicular to one side of the driving desk cultivating body. A rotary frame mounted on an axis is rotatably attached, an interlocking shaft is provided on the rotary frame via a support arm, and the connecting shaft and the interlocking shaft are connected to the outer side of the central rotation shaft via a mounting arm. A vertical axis parallel to the axis is provided, and an interlocking rod is rotatably attached between the vertical axis and the above-mentioned interlocking shaft to always set the direction of the above-mentioned tail wheel in the straight direction. It is.

(Function) In the rotary cultivating device of the present invention, when the actuator is actuated to extend and retract the rod, the drive desk cultivating body is horizontally rotated about the rotation center axis via the connecting frame, and is tilted to the right with respect to the traveling direction. The rotation is set to the left tilt state.

In this case, the power transmission shaft expands and contracts in relation to the rotation of the drive desk tiller, and the universal joints at both ends bend and follow, so that the power transmission shaft changes the direction of the drive desk tiller. Follow this smoothly without any hindrance.

In addition, the driving desk cultivating body is set to rotate to the right or left tilting state with respect to the direction of travel, and the tail wheel is rotated around the connecting shaft by the forward and backward movement of the interlocking rod. No matter which tilted state the tiller is turned to, the direction is always changed to the straight direction.

Further, the main body frame is connected, for example, to a three-point suspension mechanism of the tractor, and the input shaft of the transmission of the main body frame is connected to the power take-off shaft of the tractor, for example, via a power transmission shaft.

Then, as the machine is towed by a tractor,
Each desk of the drive desk cultivating body is rotated by the power of the tractor via the transmission and the power transmission shaft.

As a result, the cultivated soil is tilled at each desk, and the tilled soil is reversely advanced in the direction of inclination of each desk.

(Embodiment) Hereinafter, the configuration of an embodiment of the present invention will be described based on the accompanying drawings.

In the figure, 1 is a main body frame, and this main body frame 1 has a horizontal frame 2 at the front part, and a vertical frame 3 extends rearward at the middle rear part of this horizontal frame 2, and this vertical frame 3 and horizontal frame 2 through a stay 4. Lower arms 5 are opposed to each other at both ends of the horizontal frame 2 and protrude forward, and lower pitch fittings 6 are attached to the tips of the lower arms 5 on both sides. Further, a cylindrical rotation center shaft 8 is vertically inserted into a bearing body 7 attached to the rear end of the vertical frame 3 and is rotatably attached, and the lower end of this rotation center shaft 8 An intermediate portion of a rectangular cylindrical connecting frame 9 is fixed to the cylindrical connecting frame 9, and a retaining bolt 8a having a large diameter head is screwed into a threaded hole in the inner wall of the rotation center shaft 8.

Further, a mounting arm 10.11 extends left and right at the rear end of the vertical frame 3, and a limit switch 12.13 is attached to the outer end of the left and right mounting arms 10.11. Thirteen switch levers 14.15 are provided to protrude downward, and the switch levers 14.15. Is is adapted to be pushed by the connection frame 9,
The limit switches 12, 13 are connected to a variable valve 18 of a tractor (not shown) via a lead wire 16 and a control box 17.

Further, a support arm 19 is fixed to one end of the horizontal frame 2 of the main body frame 1 and extends rearward.
9 is supported by a stay 20 extending from the horizontal frame 2. Further, a vertical shaft 21 is provided near the rear end of the support arm 19.
The actuator 22 is pivotally attached to the actuator 22 so as to be rotatable in the horizontal direction. This actuator 22 is
3. The outer cylinder 25, the rod 26 extendably provided inside the outer cylinder 25 via a screw shaft and a slide nut, and the above-mentioned mold! 71123 and the above-mentioned screw shaft, and the rod 26 is expanded and contracted with respect to the outer cylinder 25 via the interlocking gate mechanism 24, the screw shaft, and the slide nut by the forward and reverse movement of the electric motor 23. It looks like this. The tip of the rod 26 is connected to the support shaft 27.
It is rotatably pivoted to one end of the connection frame 9 via.

Further, a transmission 28 is fixed to an intermediate portion of the horizontal frame 2 of the main body frame 1, and an input shaft 29 of the transmission 28 is fixed to the middle part of the horizontal frame 2 of the main body frame 1.
is rotatably protruded forward, and the output shaft 3
0 is rotatably protruded rearward, and this output shaft 30 is switched in the forward or reverse direction via a gear mechanism 32 that is switched by a switching operation of a switching handle 31 with respect to the input shaft 29. The switching handle 31 is projected from one side of the transmission 28. A top mast 34 having an upper pitch metal fitting 33 at its tip protrudes forward from the upper part of the transmission 28.

Reference numeral 35 denotes a driving desk cultivating body, and this driving desk cultivating body 35 has a support frame 36 that is inserted into the connecting frame 9 so as to be able to move back and forth in the width direction, and a chain is attached to one end in the longitudinal direction of this support frame 36. The upper part of the case 37 is fixed vertically, and the upper end of a bracket 38 facing the chain case 37 is fixed to the other end of the support frame 36. Further, both ends of the drive shaft 39 are connected to bearings 40 between the chain case 37 and the lower end of the bracket 38.
A plurality of desks 41 are rotatably mounted horizontally through the flange 42, and a plurality of desks 41 are mounted horizontally through the flange 42 to continuously plow and turn the surface in the axial direction of the drive shaft 39. installed as possible.

A sprocket 43 is fixed to the protruding end of the drive @ 39 protruding into the lower end of the chain case 37, and an input shaft 45 is rotatably suspended horizontally within the upper end of the chain case 37 via a bearing 44. A sprocket 46 is fixed to the sprocket 43, and this sprocket 46 and the sprocket 43
An endless chain 47 is suspended between. Furthermore, an upper mounting piece 48 and a lower mounting piece 49 are horizontally protruded in the same direction from the upper and lower parts of the outer side of the chain case 31, and a vertical connecting shaft 50 is interposed between the upper mounting piece 48 and the lower mounting piece 49. A cylindrical rotating frame 51 is rotatably mounted around the connecting shaft 50. Further, a pair of protruding pieces 52.53 are protruded horizontally and parallelly from each other near the lower end of the rotating frame 51, and the base of the tail wheel arm 54 is disposed between the rear ends of the pair of protruding pieces 52.53. An end portion of the tail wheel arm 54 is rotatably mounted in the vertical direction via a support shaft 55, and a tail wheel 57 is rotatably mounted on the tip of the tail wheel arm 54 via an axle 56.

Also, a support shaft 58 horizontally suspended in the middle part of this tail wheel arm 54
The lower end of the elevating rod 59 is attached to the upper end of the elevating rod 59, and the upper end of the elevating rod 59 extends from the upper part of the rotating frame 51 to the protruding pieces 52 and 53.
It is inserted into a support protrusion 60 that protrudes in the same direction as the support protrusion 60 so as to be movable up and down.
is inserted, and this support protrusion 60 and support shaft 5
A coil spring 62 is interposed and resiliently supported on the lifting rod 59 between the coil spring 62 and the lifting rod 59.

Further, the inner end of a support arm 63 formed in a substantially semicircular shape is fixed to the vicinity of the upper end of the rotating frame 51, and an interlocking shaft 64 is vertically provided on the other end of the support arm 63. ing. Further, one end of an interlocking rod 65 is detachably and rotatably attached to this interlocking shaft 64, and the other end of this interlocking rod 65 is connected to the lower end of a vertical shaft 66. It is fixed vertically to the outer end of one of the mounting arms 11.

Thus, the vertical rotation center shaft 8 and the vertical shaft 66 provided on the rotation center shaft 8 via one of the mounting arms 11 are provided.
The vertical connecting shaft 50 and the vertical linking shaft 64 provided on the connecting shaft 50 via a support arm 63 are configured parallel to each other, and the tail wheel 57 is configured so that the plurality of desks 41 can be moved and reversed in the left-right direction. Even when the desk 41 is in a straight line, it always faces in the straight direction and maintains a constant position relative to the plurality of desks 41.

The support frame 36 of the drive desk cultivating body 35 has a plurality of communication holes 36a bored in the longitudinal direction at predetermined intervals in the middle part thereof, and the locking hole 67 with which the communication holes 36a communicate is connected to the above-mentioned locking hole 67. The locking hole 67 is bored through the top and bottom of the connection frame 9, and the locking hole 67 and one of the communication holes 36a are connected by a removable connection pin 68.

Reference numeral 69 denotes a power transmission shaft, and the power transmission shaft 69 has an outer cylinder 10 and an inner cylinder 71 inserted into the outer cylinder 70 so as to be extendable and fixed around the axis. Universal joints 72 and 73 are connected to the outer ends of the tubes 11, respectively, and are capable of changing the direction to widen the angle. And the universal joint 7 of the outer cylinder 70
2 is spline-fitted to the output shaft 30 of the Mitsushicon 28 through a yoke, and the universal joint 73 of the inner cylinder 71 is spline-fitted to the input shaft 45 of the drive desk cultivating body 35 through the yoke. The front and rear spline fitting parts are integrated with a telescopic cover 74.
75.

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

Lower hitch fittings 6 on both left and right sides of the main body frame 1 are connected to lower links on both sides of the tractor, and upper hitch fittings 33 of the main body frame 1 are connected to the top link of the tractor. Further, the input shaft 29 of the transmission 28 is connected via the power output shaft of the tractor and the power transmission shaft, and the control box 17 is connected to the battery 18 of the tractor.

Next, while suspending the machine using the three-point suspension mechanism of the tractor, the lever 17a of the control box 17 is rotated to energize the limit switches 12 and 13.
When the switch 17b of the control box 17 is closed, the electric motor 23 of the actuator 22 is started, and the rod 26 in the outer cylinder 25 is extended via the interlocking mechanism 24, and the drive desk cultivating body 35 which connects the support frame 36 to the connection frame 9 is rotated horizontally about the rotation center axis 8.

Then, one side of the connecting frame 9 opposite to the support shaft 27 comes into contact with the switch lever 15 of the other limit switch 13 to push it closed, and the operation of the electric motor 23 is stopped via the control box 17. and rod 26
The extension of the drive desk tiller 35 is stopped, and therefore the drive desk tiller 35 is set to rotate at a predetermined inclination angle with respect to the traveling direction, for example, to the left tilt state, and in this setting state, the drive desk tiller 35 is held side by side by the actuator 22. be done.

In this case, a power transmission shaft 69 interlockingly connects the output shaft 30 of the mission 28 and the input shaft 45 of the drive desk cultivating body 35.
expands and contracts in relation to the horizontal rotation of the drive desk cultivating body 35, that is, the inner cylinder 11 expands and contracts with respect to the outer cylinder 70, and the universal joint 72 of the outer cylinder 70 and the universal joint of the inner cylinder 71 13 is bent and follows, and therefore, the power transmission shaft 69 smoothly follows the direction change operation of the drive desk cultivating body 35 without inhibiting it.

Further, in the above case, in relation to the horizontal rotation of the drive desk tiller 35, the interlocking rod 65 is horizontally rotated about the vertical shaft 66, and the interlocking rod 65 rotates through the interlocking shaft 64 and the support arm 63. The rotating frame 51 is horizontally rotated around the connecting shaft 50, so that the tail wheel 57 of the rotating frame 51
In connection with the direction change operation of the drive desk tiller 35, the drive desk tiller 35 is similarly moved to the opposite side while facing the straight direction. That is, the rotation frame 5 of the connecting shaft 50 that constitutes the parallel link structure
The tail wheel 57 attached to the desk 1 is changed in position with respect to the plurality of desks 41 while maintaining the same relative position.

Further, after setting the direction change of the driving desk cultivating body 35, the switching handle 31 of the transmission 28 is operated to switch according to the inclination direction of each desk 41 of the driving desk cultivating body 35, and the output shaft 30 is rotated in the forward or reverse direction. Set to switch to rotation.

Then, the machine is towed by the tractor, and the input shaft 2 is driven by the power of the tractor through the power transmission shaft.
is rotated, and the output shaft 30. of the transmission 28 is rotated. The drive shaft 39 is rotated via the power transmission shaft 69, the input shaft 45, and the endless chain 41, and each disk 41 of the drive shaft 39 is rotated. The tilled soil is sequentially tilled by each desk 41, and the tilled and buried soil is tilled by each desk 41.
It is sequentially reversed and advanced in the direction of inclination.

Next, when the tractor is turned from the forward route to the return route and the electric motor 23 of the actuator 22 is started again in the same way as in the above case to retract the extended rod 26, the drive desk cultivating body 35 is rotated around the rotation center @8. It is horizontally rotated in the opposite direction to the above case.

Then, the other end of the connecting frame 9 on the side opposite to the support shaft 27 comes into contact with the switch lever 14 of one limit switch 12 to push and close it, and the N-motor 23 operates in the same way as in the above case. is stopped, and therefore, the driving desk cultivating body 35 is set to rotate at a predetermined inclination angle with respect to the traveling direction to the right inclined state opposite to the above case, and in this setting state, the driving desk cultivating body 35 is rotated by the actuator. 2
The position is held by 2. In this case, the power transmission shaft 69
and the tailwheel 57 operate and change direction in the same manner as in the above case. Further, the rotation direction of the output shaft 30 is switched and set by switching the switching handle 31 according to the inclination direction of each desk 41 of the drive desk cultivating body 35. Then, each desk 41 is driven to rotate in the same manner as in the above case, and each desk 41 is rotated.
The plowed and buried soil that has been plowed is sequentially reversed upwards in the forward direction.

Next, in the embodiment, the left and right limit switches 12
．． 13 describes the case where the left and right mounting arms 10 and 11 are provided in a fixed position in consideration of the rotation range, that is, the inclination angle, of the drive desk cultivating body 35. It is preferable to attach the body 35 so that its position can be adjusted so that the inclination angle of the body 35 can be variably adjusted. In addition, the rotation range of the drive desk cultivating body, that is, the inclination angle, is independent of the limit switch 12.13.
The operation of the electric motor 23 of the actuator 22 is υ11! I
This may be done by doing this.

[Effects of the Invention] According to the present invention, it is possible to automatically change the direction of a plurality of desks of a driving desk cultivating body, that is, to change the direction to a rightward tilting state or a leftward tilting state, and also to change the direction of a plurality of desks in a drive desk cultivating body. The angle can be variably adjusted depending on the purpose of the work, for example, for surface plowing and ridge plowing, and it is not necessary to manually operate the locking means each time the drive desk tiller changes direction. Since there is no such thing, handling and operation are extremely easy. In addition, by supporting the drive deck with a tail wheel, multiple desks can be stably rotated and plowed deeply without swinging from side to side. In addition, this tail wheel can be automatically switched in conjunction with the turning movement of the drive desk cultivating body to ensure that it is always set in a straight-line orientation.

Therefore, it is possible to provide a rotary tiller with excellent workability.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, and FIG. 1 is a perspective view of a rotary tiller, FIGS. 2 and 3 are plan views of the drive desk tiller in a state where the direction has been changed, and FIG. 4 is a perspective view of a rotary tiller. It is a perspective view of the same tail wheel switching mechanism. 1. Main body frame, 8. Rotation center axis, 9. Connection frame, 11. Mounting arm, 22. Actuator, 28. Mission, 29. Input shaft, 30. Output shaft, 35.・Drive desk cultivating body, 39... Drive shaft, 4
1...Desk, 45...Input shaft, 50...Connection shaft, 51
... Rotating frame, 57 ... Tail wheel, 63 ... Support arm, 64
・・MwJ axis, 65・・Interlocking rod, 66・・Vertical axis, 69
...Power transmission shaft, 72.73...Universal joint. September 22, 1986

Claims (1)

[Claims] (1) A main body frame, a transmission provided at the front part of the main body frame with an input shaft protruding forward and an output shaft protruding rearward, and a transmission horizontally attached to the rear part of the main body frame through a rotation center shaft. A rotatable connecting frame, and an input that transmits power to the drive shaft, and multiple desks attached to this connection frame that continuously plow and turn the soil are mounted parallel to the drive shaft. A driving desk cultivating body provided with a shaft, a telescoping power transmission shaft connecting universal joints at both ends to the input shaft of the driving desk cultivating body and the output shaft of the transmission, and a rotatable power transmission shaft attached to one side of the main body frame. It is movably pivoted and its tip end is rotatably pivoted to the connection frame, the direction of the driving index cultivating body is changed around the rotation center axis, and the driving index cultivating body is set at a predetermined inclination angle. a telescoping actuator for holding; a rotating frame that is rotatably attached to one side of the drive desk cultivating body via a vertical connecting shaft and has a tail wheel rotatably mounted on the rear thereof; an interlocking shaft provided on the rotation frame via a support arm; a vertical axis provided outside the rotation center axis via a mounting arm and parallel to the connection shaft and the interlocking axis; A rotary tiller comprising: a vertical shaft and an interlocking rod rotatably attached between the interlocking shaft and always setting the direction of the tailwheel in a straight direction.