JPH03272602A - Tiller - Google Patents

Abstract

PURPOSE:To surely prevent scattering of mud toward the front tractor driver by providing a synchronizing means for synchronizing a movable cover body with vertical movement of soil preparing body in a tiller. CONSTITUTION:A movable cover body 41 is interlocked with a soil preparing body 26 by a synchronizing means 52 for synchronizing with vertical movement of soil preparing body 26 by setting position of rotary operating body 11. The soil preparing body 26 is opposed to the rotary operating body 11 and the movable cover body 41 is closely opposed to tilling soil in front of the rotary operating body 11 to block the front opening of rotary operating body 11.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to a tillage device, which plows and crushes soil with a rotary working body during plowing work, and the surface of this crushed soil is sequentially graded by a leveling body. This relates to things that proceed with plowing while leveling the ground.

(Prior art) Conventionally, as this type of tillage device, for example,
As described in Japanese Patent No. 4-28803, a tilling cover having a ground leveling plate at the rear end is provided in the upper part of the rotary working body so as to be rotatable in the front and rear directions about the tilling shaft of the rotary working body, This tilling cover is rotatably supported by an adjustment device having an advancing and retracting rod that is moved forward and backward by the rotating operation of the handle, and the front cover is supported at the front end of the tilling cover through a link mechanism so as to be able to move back and forth. A structure is known in which the tilling cover is rotated rearward, for example, to lower the leveling plate by the operation of the adjustment device, and the front cover is caused to protrude forward and downward via a link mechanism.

(Problems to be Solved by the Invention) The structure described in the above-mentioned publication is preferable in that the front cover is moved back and forth in conjunction with the back and forth rotation of the tilling cover having the ground leveling plate. To rotate the tilling cover, it is necessary to rotate the handle of the adjustment device each time the tilling cover needs to be adjusted, which requires a lot of effort, and the tilling cover does not rotate around the tilling shaft. Because it rotates around the center of rotation, the rotating part of this tillage cover, that is, the rotation support part with the tilling shaft, tends to rotate unsmoothly due to muddy soil, and especially when performing deep plowing work, the tilling shaft becomes unstable. Because the tillage cover travels through muddy soil, the rotational adjustment of the tillage cover may become unsmooth or uncertain due to the muddy soil.Also, the tillage cover must be adjusted separately from the depth and shallowness adjustment of this machine (pumping machine) using the tractor's suspension mechanism. This poses problems such as requiring the operation of an adjusting device.

Therefore, the present invention has been made in view of the above problems, and it is possible to automatically synchronize the movable cover body at the front part of the rotary work body with the vertical movement of the ground leveling body at the rear part of the rotary work body, As a result, the soil leveling body is moved up and down according to the work situation such as shallow tillage work and deep tillage work by the depth adjustment setting of the rotary work body, and the movable cover body is synchronized and interlocked, and the movable cover body moves the mud forward. A tillage device that can reliably prevent debris and soil from being scattered toward a tractor driver, and can also reliably prevent foreign matter and soil from being pushed forward and a movable cover body from becoming a resistance to progress. The purpose is to provide the following.

[Structure of the invention]

(Means for Solving the Problems) The tilling device of the invention of claim 1 includes a rotary work body rotatably provided on a main body frame, and a rotary work body provided on the main body frame to cover an upper part of the rotary work body. a fixed cover body, a ground leveling body which is vertically movably connected to the rear end of the fixed cover body and faces the rear part of the rotary work body to level the tilled soil; and the front side of the fixed cover body. a movable cover body that is movably provided in the section and opens and closes the front part of the rotary work body; and a movable cover body that automatically interlocks with the vertical movement of the ground leveling body so that the movable cover body follows the vertical movement of the ground leveling body. It is equipped with a tuning means for synchronizing.

The tilling device of the invention according to claim 2 is the device according to claim 1, in which the movable cover body is vertically movably supported via a guide in a vertical guide groove formed in the fixed cover body, and the movable cover body is vertically movably supported via a guide. It moves up and down in sync with the up and down movement.

The tilling device of the invention of claim 3 is the device of claim 1, in which the movable cover body is rotatably supported in the front and rear directions around a support shaft provided on the fixed cover body, and the movable cover body is rotatably supported in the front and rear direction around the pivot shaft provided on the fixed cover body, and They rotate in sync.

The tilling device of the invention according to claim 4 is the device according to any one of claims 1 to 3, wherein the tuning means is fixed between a spring elastically supporting the movable cover body and a front end portion and a rear end portion of the fixed cover body. A guide tube of a predetermined length, and a wire that is inserted into the guide tube so as to be able to move forward and backward, and has one end fixed to a movable cover body and the other end fixed to a ground leveling body. It is.

The tilling device of the invention according to claim 5 is the device according to any one of claims 1 to 3, wherein the tuning means includes a cylinder device supporting the movable cover body, and a cylinder device that senses the vertical movement of the earth leveling body. A sensor to operate,
It is composed of:

(Function) In the tilling device according to claim 1, the main body frame is, for example,
When the rotary work body is connected to and suspended from the suspension mechanism of the tractor, and the suspension mechanism sets the depth adjustment of the rotary work body in the soil, that is, the rotary work body is moved from a shallow plowing work position to a deep plowing work position, for example. When the rotary work body is set to be lowered, the set position of the rotary work body causes the grounding part of the earth leveling body to catch the soil and push up the earth leveling body, and the synchronization means interlocks with the pushing up movement of this earth leveling body to move the movable cover body. is automatically synchronized upward. Then, the movable cover body is opened upward in accordance with the amount by which the ground leveling body is pushed up. As a result, the ground leveling body is grounded with a predetermined ground pressure at the rear part of the rotary work body and is faced to the rotary work body, and the movable cover body is closely faced to the tilled soil at the front part of the rotary work body. is,
In addition, this blocks the front opening of the rotary work body, and prevents mud from scattering forward from the rotary work body.

In the tilling device according to claim 2, in the case of the operation according to claim 1, the movable cover body is smoothly opened upward according to the amount of push-up of the land leveling body via the guide along the long guide groove of the fixed cover body. It is operated.

In the tilling device according to claim 3, in the case of the operation according to claim 1, the movable cover body is opened forward about the pivot of the fixed cover body in accordance with the amount of pushing up of the earth leveling body.

In the tillage device according to claim 4, in the operation according to any one of claims 1 to 3, the wire is guided by the guide tube and pushed forward according to the amount of push up of the earth leveling body, and
By actuation of the spring, the movable cover body is automatically opened upward or forward according to the amount by which the earth leveling body is pushed up.

In the tilling device according to claim 5, in the operation according to any one of claims 1 to 3, the sensor is activated according to the amount of pushing up of the soil leveling body, and the cylinder device is also operated, and the movable cover body is moved by the cylinder device. It is automatically opened according to the amount of push up of the earth leveling body upward or forward.

(Embodiment) Hereinafter, the configuration of an embodiment of the present invention will be described based on a puddling device shown in the drawings.

In the first embodiment of the purging device shown in FIGS. 1 to 3, reference numeral 1 denotes a main body frame, and this main frame 1 has a main frame 2 extending in the left-right direction, and both ends of this main frame 2 The upper ends of the brackets 3 facing the left and right brackets 3 are fixed to each other, and a chain case 4 is integrally fixed to the outer side of one of the left and right brackets 3. Further, a transmission 6 is provided at an intermediate portion of the main frame 2 and protrudes rotatably with an input shaft 5 directed forward. Further, an upper connecting arm 7 and a lower connecting arm 8 are connected to both left and right ends of the main frame 2 and the upper part of the mission 6.
are integrally projected forward, and each connecting arm 7.
Connecting pins 9 and 10 are attached to the distal end of 8.

Further, reference numeral 11 denotes a rotary work body, and this rotary work body 11 is constructed by having a large number of plowing claws 13 protruding radially from the circumferential side in the axial direction of a tillage shaft 12. The rotary work body 11 is disposed between the lower ends of the left and right brackets 3, and both ends of the tilling shaft 12 extend between the left and right brackets 3 and the chain case 4 on one side thereof.
The protruding end of the tilling shaft 12 is rotatably supported within the chain case 4, and the protruding end of the tilling shaft 12 protrudes from the main frame 2.
The chain case 4 is rotatably inserted into the chain case 4 and is rotatably coupled to the output shaft of the transmission 6 which projects into the upper end of the chain case 4 via a coupling medium (not shown).

Further, reference numeral 14 denotes a fixed cover body, and this fixed cover body 14 is fixed between the left and right brackets 3 so as to be located above the rotary work body 11 and cover it. In this fixed cover body 14, side plates 16 are integrally fixed to both left and right ends of an arc-shaped top plate 15, and in the vicinity of the front ends of the left and right side plates 16, slightly arc-shaped guide grooves 17 are formed so as to face each other in the vertical direction. ing.

Further, between the rear ends of the left and right side plates 16, the upper end of the elastic cover body 19 and a number of vertical frames are connected to the rear end of the arcuate top plate 15 at predetermined intervals via a supporting frame 18 extending in the left-right direction. The upper ends of the screens 20 arranged in parallel with each other are fixed together, a leveling plate 21 is fixed to the lower end of this elastic cover body 19, and a support shaft is attached to the rear end of the left and right side frames 22 of this leveling plate 21. The front end portions of the left and right side frames 25 of the rake 24 are pivoted via 23 so as to be rotatable in the vertical direction. The elastic cover body 19, the leveling plate 21, and the rake 24 constitute a ground leveling body 26 that faces the rear end of the rotary work body 11 and levels the cultivated soil.

Further, an extension side plate 27 is integrally projected from the rear ends of the left and right side plates 16, and a support frame 28 is fixed horizontally between the rear ends of the left and right extension side plates 27.
A guide piece 30 having a guide hole 29 is provided protruding from the left and right rear sides of the guide plate 8 . In addition, the guide holes 29 of the left and right guide pieces 30
The lower end portions of the left and right vertically movable rods 31 that are inserted into the interior of the vertically movable rods are rotatably attached to the left and right portions of the leveling plate 21 via support shafts 32, The left and right vertically movable rods 331.33b and 33c are located between the upper portions of the left and right guide pieces 30 and the stoppers 33c at selected positions on the upper side of the vertically movable rods 31.
1 is wound with coil springs 341 and 34b. Further, a pair of left and right support plates 35 having a triangular shape in side view are integrally fixed to the upper portions of both sides of the support frame 28, and a guide support 37 is rotatable between the pair of support plates 35 on both sides via a horizontal shaft 36. This left and right guide support 3
An elevating rod 38 is inserted into and supported by the left and right elevating rods 38 in the left and right portions of the rake 24 so as to be vertically movable.
The left and right lifting rods 38
A coil spring 40 is wound around the guide support 37 and the stopper 38a at a selected position at the upper end.

Reference numeral 41 denotes a movable cover body, and this movable cover body 41 is formed in a size that opens and closes the front part of the rotary work body 11, and its left and right edges are provided inside the left and right side plates 16 of the fixed cover body 14. Mounting pieces 42 located at the left and right mounting pieces 42 are integrally formed, and guide rollers 43 as guides are rotatably attached to the top and bottom near the upper ends of the left and right mounting pieces 42 with screws 44. roller 43
are engaged in the guide grooves 17 of the left and right side plates 16 so as to be vertically movable.

Further, an extension cover 45 is integrally fixed to the lower end of the movable cover body 41 and is provided vertically, and locking pieces 46 are integrally provided on the left and right sides of the upper end of the movable cover body 41 to prevent the locking. A coil spring 48 is stretched between the piece 46 and a locking piece 47 protruding from the bottom of the left and right sides of the main boom 2, and the left and right coil springs 48 move the movable cover body 41 into the left and right guide grooves 17. It is supported so as to be movable up and down via guide rollers 43 on the left and right and above and below.

Next, fittings 49 are fixed to the front ends of the left and right side plates 16 of the fixed cover body 14 and the rear ends of the left and right support plates 35, respectively. Both ends of the wire 50 are engaged, and the wire 51 is pushed through the left and right guide tubes 50 so as to be freely advanced and retracted, and one end of the left and right wires 51 led out from one end of the left and right guide tubes 50 Movable cover body 4
The left and right locking pieces 46 of 1 are locked against the coil spring 48, and the other ends of the left and right wires 51 led out from the other end of the guide tube 50 are connected to the leveling plate 21. Left and right support shafts 2 with rake 24 attached to them
It is locked at 3. And the coil spring 4
8, fitting 49, guide tube 50, and wire 51
Due to the vertical movement of the ground leveling body 26, the movable cover body 4
A tuning means 52 for tuning 1 is configured. The left and right wires 51 of this tuning means 52 are connected to the respective guide tubes 50 each having a predetermined length.
The earth leveling body 2 is moved forward and backward using the wires 51 as a guide.
The rake 24 of No. 6 and the movable cover body 41 are always set at the same height.

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

The connecting pins 9 and 10 of the main body frame 1 are connected to the three-point connecting parts of the three-point suspension mechanisms a and b of the tractor to suspend this, and the rotary work body 11 is suspended from the ground in the field by this three-point suspension mechanism. When the depth adjustment is set for the inside, that is, this rotary work body 11 is set to the first
As shown in the figure, from a shallow puddling work position suspended relatively high with respect to the ground surface A, as shown in Fig. 3,
When the rotary work body 11 is lowered to a deep puddling work position where it is suspended relatively low, the leveling plate 21 and rake 24 of the earth leveling body 26 are pushed by earth pressure due to the set position of the rotary work body 11. At the same time, the vertical moving rod 31 and the lifting rod 38 are guided and pushed up, and the left and right wires 51 are guided to the respective guide tubes 50 by the pushing up action of the leveling plate 21 and rake 24. As the left and right wires 51 are pushed forward, the front parts of the left and right wires 51 loosen, and the left and right coil springs 48
The movable cover body 41 is pulled upward by the restoring force of
This movable cover body 41 is pulled upward along the guide groove 17 of the fixed cover body 14 via left and right upper and lower guide rollers 43. Therefore, the leveling plate 21 and the rake 2
4, the movable cover body 41 is automatically synchronized and interlocked upward, and the leveling plate 21 and rake 24
The movable cover body 41 is opened upward to a height corresponding to the amount of push-up. In addition, as described above, the rotary work body 11
When the screen 20 is set to descend, each vertical rod of the screen 20 is inserted into the soil according to the set depth. As a result, the ground leveling body 26 is grounded at a predetermined ground pressure at the rear part of the rotary work body 1j and is faced to the rotary work body 11, and the extension cover 45 of the movable cover body 41 is connected to the rotary work body 11. The front opening of the rotary work body 11 is closely opposed to the cultivated soil at the front of the rotary work body 11, and the front opening of the rotary work body 11 is blocked by this.

Next, the machine is towed by a tractor and moved through a field filled with water, and the power of the tractor is used to drive the input wheel 5, transmission 6, output shaft, and rotary motor through the interlocking medium in the chain case 4. The working body 11 is rotated in the downcut direction in conjunction with the rotary working body 11, and the soil is sequentially tilled and crushed at a predetermined plowing depth set by the tilling shaft 12 and each tilling claw 13 of the rotary working body 11.

The mud scattered to the front part of the rotary work body 11 as the rotary work body 11 rotates is blocked by the movable cover body 41 located at the front part of the rotary work body 11 and this extension cover 45, and therefore the mud is This prevents water from directly scattering toward the driver of the tractor at the front of the rotary work body 11, as well as from reflecting from the water-containing ground surface A at the front of the rotary work body 11 and scattering toward the driver. be done.

In addition, wire rods such as straw in the crushed soil tilled and crushed by the rotary work unit 11 are successively buried deep in the soil as organic fertilizer by each vertical rod of the subsequent screen 20, and the surface portion of the crushed soil is The ground is leveled one after another by the flat plate 21 and the rake 24 so that there are no irregularities.

Next, a second embodiment of the purging device shown in FIG. 4 will be described.

In this second embodiment, in the first embodiment, the movable cover body 41 is supported so as to be rotatable in the front-rear direction using a support shaft 53 as a fulcrum. That is, the fixed cover body 14
The support shafts 53 are provided horizontally protruding near the front ends of the left and right side plates 16, and the movable cover body 4 is attached to the left and right support shafts 53.
The upper end portions of the left and right mounting pieces 42 are rotatably supported. Note that the other configurations are the same as those of the first embodiment, so
These common parts will be denoted by the same reference numerals and a description of their configuration will be omitted.

With this configuration, the movable cover body 41 rotates about the left and right support shafts 53 of the fixed cover body 14 of the earth leveling body 26 without being moved up and down by the guide long groove 17 and the plurality of guide rollers 43. It is automatically opened forward to a height corresponding to the amount of push-up.

Next, a third embodiment of the purging device shown in FIG. 5 will be described.

This third embodiment is a modification of the first embodiment in which the movable cover body 41 is moved up and down by a cylinder device 54 and a sensor 55.

That is, mounting pieces 56 are protruded from the left and right parts of the main frame 2 of the main body frame 1, and the base end of the cylinder device 54 is rotatably attached to the left and right mounting pieces 56 by a support shaft 57. The left and right locking pieces 46 of the movable cover body 41 are rotatably attached to the tips of the piston rods 5.8 of the left and right cylinder devices 54 by means of a support shaft 59. Further, the sensor 55 for controlling the operation of the left and right cylinder devices 54 is attached to the left and right support plates 35 at the rear of the fixed cover body 14, and a sensing arm 60 is rotatably provided on the left and right sensors 55. There is an interlocking rod 6 at the tip of the
1 is rotatably attached via an interlocking pin 62, and the rake 24 is attached to the lower end of the left and right interlocking rods 61.
The left and right support shafts 23 are rotatably attached. The cylinder device 54, the sensor 55, the sensing arm 60, and the interlocking rod 61 constitute a tuning means 63 for synchronizing the movable cover body 41 with the vertical movement of the ground leveling body 26. The rest of the configuration is the same as that of the first embodiment, so the same reference numerals will be added to the common parts and a description of the configuration will be omitted.

With this configuration, the left and right sensing arms 60 are pushed up and rotated via the left and right interlocking rods 61 according to the amount of push up of the ground leveling body 26, and the left and right sensors 55 sense this. This sensor 55 detects and operates.
The left and right cylinder devices 54 are operated by the output signal, the piston rod S8 of this cylinder device 54 is contracted, and the movable cover body 41 is pulled upward by the guide long groove 17 and the plurality of guide rollers 43, so that the movable cover body 41 is automatically opened upward to a height corresponding to the amount of pushing up of the earth leveling body 2G.

Next, a fourth embodiment of the puddling device shown in FIG. 6 will be described.

In this fourth embodiment, in the third embodiment, the movable cover body 41 is supported so as to be rotatable in the front and rear directions about a support shaft 53 as in the second embodiment. Note that the other configurations are the same as those of the first and third embodiments, so the same reference numerals will be added to the common parts and a description of the configuration will be omitted.

With this configuration, the movable cover body 41 rotates about the left and right support shafts 53 of the fixed cover body 14 of the earth leveling body 26 without being moved up and down by the guide long groove 17 and the plurality of guide rollers 43. It is automatically opened forward to a height corresponding to the amount of push-up.

Next, in each of the above-mentioned embodiments, when the rotary work body 11 is rotated in the down-cut direction to perform purge work, the movable cover body 41 is automatically synchronized and interlocked with the vertical movement of the ground leveling body 26. However, the present invention is not limited to this plowing work, but is applicable not only to this plowing work, but also to the top and bottom of the land leveling body 26 when performing tillage work in which the rotary work body opening is rotated in the up-cut direction to till and crush the cultivated soil of uncultivated land. The movable cover body 41 may be automatically synchronized and interlocked with each movement.

〔Effect of the invention〕

According to the invention of claim 1, it is possible to automatically synchronize the movable cover body at the front part of the rotary work body with the vertical movement of the earth leveling body, and thereby shallow plowing work and shallow plowing work by adjusting the depth and shallowness of the rotary work body can be performed. The earth leveling body is moved up and down according to the work situation such as deep plowing work, and the movable cover body is synchronized and interlocked, and this movable cover body ensures that mud and cultivated soil are not scattered towards the tractor driver in front. This can be prevented, and it is also possible to reliably prevent foreign matter and soil from being pushed forward and the movable cover body from becoming a movement resistance.

According to the invention of claim 2, the movable cover body can be smoothly moved up and down along the guide long groove via the guide,
The synchronized interlocking with the ground leveling body can be performed smoothly, and the front part of the rotary work body can be reliably blocked.

According to the third aspect of the invention, the movable cover body can be reliably rotated in the front and rear directions about the support shaft, and the front part of the rotary work body can be reliably blocked.

According to the fourth aspect of the invention, the movable cover body can be reliably synchronized and interlocked with the vertical movement of the ground leveling body with a simple configuration.

According to the invention of claim 5, the vertical movement of the ground leveling body can be accurately detected by the sensor, and the movable cover body can be accurately synchronized and interlocked with the movement of the ground leveling body by operating the cylinder device using this sensor. .

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Fig. 1 is a side view of the tilling device, Fig. 2 is an exploded perspective view of a part of the above movable cover body attachment part, and Fig. 3 is the same as the above ground leveling body and movable cover. FIGS. 4 to 6 are side views of the tilling device showing other embodiments, respectively. 1. Main body frame, 11. Rotary work body, 14
... Fixed cover body, 17.. Guide long groove, 26.. Ground leveling body, 41.. Movable cover body, 43.. Guide, 48.. Spring, 50.. Guide tube, 51.. Wire.
52... Tuning means, 53... Support shaft, 54... Cylinder device, 55... Sensor, 63... Tuning means. March 2, 1990

Claims (5)

[Claims] (1) A rotary work body rotatably provided on the main body frame, a fixed cover body provided on the main body frame that covers the upper part of the rotary work body, and a rear end of the fixed cover body that can be moved up and down. a ground leveling body that is freely connected and facing the rear part of the rotary work body to level the tilled soil; and a movable body that is movably provided on the front side of the fixed cover body and opens and closes the front part of the rotary work body. A tillage device comprising: a cover body; and a tuning means that automatically interlocks the movable cover body according to the vertical movement of the earth leveling body to synchronize the movable cover body with the vertical movement of the earth leveling body. (2) A claim characterized in that the movable cover body is vertically movably supported via a guide in a vertical guide groove formed in the fixed cover body, and moves vertically in synchronization with the vertical movement of the earth leveling body. The tillage device according to item 1. (3) The movable cover body is supported so as to be rotatable in the front and rear directions around a support shaft provided on the fixed cover body, and rotates in synchronization with the vertical movement of the ground leveling body. tillage equipment. (4) The tuning means includes a spring that elastically supports the movable cover body, a guide tube of a predetermined length fixed between the front end and the rear end of the fixed cover body, and a guide tube that is inserted into the guide tube so as to be freely retractable. 4. The tillage device according to claim 1, further comprising a wire having one end fixed to the movable cover body and the other end fixed to the ground leveling body. (5) Claims 1 to 3 characterized in that the tuning means is constituted by a cylinder device that supports the movable cover body, and a sensor that senses the vertical movement of the ground leveling body and operates the cylinder device. The tillage device according to any one of.