KR101967504B1

KR101967504B1 - Rice transplanter

Info

Publication number: KR101967504B1
Application number: KR1020157015602A
Authority: KR
Inventors: 케이시 키누타; 야스타카 히키다; 유키노리 키무라; 카즈키 카나타니; 사토루 오카다; 히데히로 유키; 료우헤이 노가미
Original assignee: 얀마 가부시키가이샤
Priority date: 2012-11-21
Filing date: 2012-11-21
Publication date: 2019-04-09
Also published as: WO2014080485A1; CN104812233A; CN104812233B; KR20150085006A

Abstract

Provided is a technique capable of preventing breakage even when the stopping device is pushed up suddenly from the grounding portion during operation of the stopping device. The herbicide (1) has a stopper (20) for stopping the dogs. The stopping device 20 includes an operation lever 40 for lifting and lowering the stopping device 20 via the support link mechanism 30 provided in the molding part 4, Regardless of the operation of the stopper device (40).

Description

Rice transplantation {RICE TRANSPLANTER}

TECHNICAL FIELD The present invention relates to a technique of a rice milling machine.

Japanese Patent Laid-Open Publication No. 2008-228598 discloses a stationary apparatus for a rice-growing machine, which comprises a stationary rotor mounted on a drive shaft for rotational driving, a reinforcing stay interposed between the drive shaft and a vegetation portion, (Operation position) of the stop rotor.

Even when an external force is applied to the stationary rotor of the stationary device due to a collision of a stone or a foreign object with the stationary device during the operation of the manure station, the stationary rotor is prevented from being damaged by being bent by the support of the stationary stay.

Japanese Patent Application Laid-Open No. 2008-228598

However, since the stop rotor is structured so as not to rise from the (set) height position in which the operation lever is not operated when the operation lever is not moved up and down, when an upward external force is applied from the downward direction, for example, There is a fear that the stop rotor is damaged when the stop rotor is rapidly pushed up.

The present invention provides a technique capable of preventing breakage even if the stopping device is suddenly pushed up from the grounding portion during operation of the stopping device.

The problems to be solved by the present invention are as described above, and means for solving this problem will be described next.

The stopper device according to any one of claims 1 to 3, wherein the stopper device is vertically movable with respect to the cooking cavity via a support link mechanism provided on the cooking cavity, and the support link mechanism is connected to the stopper device Wherein the operation lever allows movement of the stopper to the upward side regardless of the operation of the operation lever.

Wherein the support link mechanism has a rotation axis provided along an extending direction of the stopper and is configured to be able to raise and lower the stopper according to a rotation motion of the rotation shaft and the rotation base portion of the operation lever is rotatably provided A contact bracket fixed to the rotating shaft of the operating lever to be in contact with the rotating base from the upper side thereof and an elastic member biasing the rotating base and the contact bracket in a direction to contact each other.

The support link mechanism includes upper and lower links that move in the vertical direction in accordance with the rotational motion of the rotary shaft, and the upper and lower links are disposed in front of the float of the cooking cavity as a rear of the rear wheel, and a mud- .

According to the present invention, it is possible to prevent breakage even when the stopper is suddenly pushed up from the grounding portion during operation of the stopper.

1 is a side view of a rice miller.
2 is a perspective view showing the stopping device.
3 is a perspective view showing the operation lever.
Fig. 4 is a side view showing the operation lever, showing movement of the contact bracket when a large load acts on the stopper. Fig.
5 is a side view showing the mud-proof plate.
Fig. 6 is a block diagram showing a configuration for controlling the inclination of the right and left sides of the molding part. Fig.
Fig. 7 is a flow chart showing control at the seedling connection operation.
Fig. 8 is a block diagram showing another embodiment of the configuration for controlling the inclination of the right and left sides of the cooking chamber.
9 is a diagram showing the detection values when the detection values of the inclination sensors of the traveling portion are filtered using a low-pass filter.
10 is a rear perspective view showing a supporting structure of the eating-comprehension transmission case.
11 is a front perspective view showing the supporting structure of the eating-comprehension transmission case.
12 is a front perspective view showing the motor unit of the type co-ordination stop clutch;
13 is a front perspective view showing the internal structure of the motor unit.
Fig. 14 is a plan view showing a stop device in the form of an eight-arm. Fig.
Fig. 15 is a view showing a stop power transmission case of a stop device in the form of an arm.
16 is a plan view showing a state in which the center float is moved forward;

As shown in Fig. 1, a rice mill 1 includes an engine 2, a power transmission portion 3, a cooling portion 4, and a lift portion 5. As shown in Fig. The diaphragm 4 is connected to the base body via the elevating portion 5 and is vertically movable by the elevating portion 5. [ Power from the engine 2 is transmitted to the diaphragm 4 through the power transmitting portion 3. [ The herbicide 1 is driven by the engine 2 to drive the planting section 4 to plant seedlings in a field (hereinafter referred to as "field").

The driving force from the engine 2 is transmitted to the PTO shaft 7 from the power transmitting portion 3 through the transmission 6. [ The PTO shaft 7 is provided protruding rearward from the transmission 6. Power is transmitted from the PTO shaft 7 through the universal joint to the eating-and-drinking case 8, and the eating and drinking section 4 is driven. A drive shaft 9 is provided rearwardly from the transmission 6 and a driving force is transmitted from the drive shaft 9 to the rear axle case 10. [ In addition, power is transmitted from the rear axle case 10 to the stopping device 20 for stopping the on-

A plurality of floats (14) are disposed in front of the food part in the food part (4). A stop device (20) is disposed in front of the float (14) in the molding part (4).

[Stopping device]

2, the stopping device 20 is mounted to the eating frame 15 which supports the eating and drinking section 4 via the supporting link mechanism 30. [ The supporting link mechanism (30) supports the stopping device (20) so as to be able to move up and down with respect to the cooking chamber (4). That is, the stopper 20 can change the height of the stopper portion 4 with the lifting and lowering of the support linkage 30.

The support link mechanism 30 includes a rotation shaft 31 provided along the extension direction of the stopper 20 (width direction of the food frame 15), an arm 32 fixed to both ends of the rotation shaft 31, And upper and lower links 33 for connecting the stopper 20 and the stopper 20 and an auxiliary arm 34 for connecting the lower end of the upper and lower links 33 and the food frame 15 do.

The rotary shaft 31 is rotatably supported at the both ends of the food frame 15 through the support arm 35. Thus, the support link mechanism 30 rotates the arm 32 in accordance with the rotation of the rotary shaft 31 to move the upper and lower links 33 up and down, 4) can be changed.

3, an operation lever 40 is provided at the center of the rotary shaft 31 for rotating the rotary shaft 31 (operation for lifting and lowering the support link mechanism 30). The rotation base portion 41 of the operation lever 40 is rotatably supported with respect to the rotation shaft 31. The rotation base portion 41 is provided so as to protrude from the rotation axis 31 toward the radial direction.

The rotating base portion 41 is biased downward by a contact bracket 42 fixed to the rotating shaft 31. [ The contact bracket 42 contacts the rotation base portion 41 from above. A torsion spring 43 is provided between the contact bracket 42 and the rotation base portion 41. The torsion spring 43 is wound on the rotary shaft 31 and is fixed to the rotation base portion 41 at one end and to the contact bracket 42 at the other end. The contact bracket 42 and the rotation base portion 41 are biased toward the direction in which they are in contact with each other by the elastic force of the torsion spring 43. [ That is, the operation lever 40 is connected to the rotation shaft 31 via the rotation base portion 41 and the contact bracket 42, and the rotation operation of the operation lever 40 is interlocked with the rotation shaft 31.

A holding bracket 45 for holding the turning position of the operating lever 40 is provided on the side of the operating lever 40. [ The holding bracket 45 is fixed to the eating frame 15. The holding bracket 45 is provided with a plurality of engagement grooves 45a at predetermined heights. The holding position of the operating lever 40 is maintained and the height of the stopping device 20 is determined by engaging the latching plate 40a mounted on the intermediate portion between the latching groove 45a and the operating lever 40. [

The lower end of the rotation base portion 41 of the operation lever 40 and the lower end of the support bracket 45 are connected by a spring 46 so that the operation lever 40 is biased by the spring 46 to rotate upward . That is, when the engaging plate 40a is removed from the engaging groove 45a, the biasing force of the spring 46 acts in the direction in which the operating lever 40 rotates upward.

Further, the operation lever 40 is biased toward the holding bracket 45 side by the return spring 47. As a result, the engagement between the engagement plate 40a of the operation lever 40 and the engagement groove 45a of the holding bracket 45 is maintained.

As shown in Fig. 4, when the upward load is applied to the stopping device 20, for example, when the stopping device 20 passes through a protruding rigid cane, the stopping device 20 tries to move upward. Then, the load is transmitted to the rotary shaft 31 through the upper and lower links 33 as rotational force.

When the rotational force applied to the rotating shaft 31 is greater than the resilient force of the torsion spring 43, that is, when a large load acts on the stopper 20, the contact bracket 42 contacts the rotating base portion 41, the upward movement of the stopper device 20 can be permitted irrespective of the holding position of the operation lever 40.

Therefore, even when a large load is applied upward to the stopper 20 while maintaining the height of the stopper 20 determined by the operation lever 40, the stopper 20 So that breakage of the stopper 20 can be prevented. Further, the upward and downward movement can be absorbed by the elastic force of the torsion spring 43.

Even if the stopping device 20 comes into contact with the road surface in a state in which the stopping device 20 is lowered than the float 14 during the running of a hard road such as an asphalt road surface or the like, It is possible to prevent the breakage by allowing the movable member 20 to move upward.

Further, by appropriately changing the elastic modulus of the torsion spring 43, it is possible to change the grounding load of the stopper 20 and the field of rice fields. For this reason, it is possible to select the optimum grounding load in accordance with the conditions of rice fields, the conditions of the food, and the like.

The rotation shaft 31 of the support link mechanism 30 and the rotation base portion 41 of the operation lever 40 are provided on the same shaft and the torsion spring 43 is further provided on the rotation shaft 31, Can be made compact.

5, the upper and lower links 33 are provided between the rear wheel 11 and the float 14. As shown in Fig. A mud-proof plate 36 is provided on the lower front surface of the upper and lower links 33. The mud-proof plate 36 is a plate-like member whose upper portion is bent toward the rear side, and prevents the mud protruding by the rear wheel from being caught by the float 14, ), So that they are not affected by the clay during the cooking operation.

[Control at seedling connection work]

The diaphragm 4 is configured so as to be able to be raised and lowered by the elevating and lowering portion 5, and is also configured to be able to tilt rightward and leftward about the center in the width direction of the body. In normal operation, the inclination sensor 53 senses the inclination of the vehicle running portion along the inclination of the field of the rice, and adjusts inclination of the inclining portion 4 in the lateral direction using the detection result or the like. Thus, the horizontal portion 4 is inclined following the inclination of the field so that the horizontal portion 4 is horizontal with respect to the field surface.

During the seedling connection operation, since the engine revolution speed is controlled to be lower than the idling revolution speed, the vibration of the base body is increased. As a result, it is known that the inclination angle of the diaphragm 4 can not be properly maintained due to erroneous detection of the inclination sensor 53. Therefore, in the present embodiment, a control configuration is provided that appropriately processes the detection result by the inclination sensor 53 during the seedling connection operation to appropriately maintain the inclination angle of the molding section 4. [

6, the control device 50 includes a position switch 51 for detecting the operating position of the main shift lever, an operating position of an inclination angle setting dial for setting the angle of inclination of the diverging portion 4 with respect to the horizontal plane, A tilt sensor 53 for detecting the tilt of the traveling part and a tilt sensor 54 for sensing the tilt of the feeding part 4, respectively. The control device 50 receives the setting value A from the setting switch 52, the detection value B from the inclination sensor 53, and the detection value C from the inclination sensor 54, respectively.

The control device 50 determines an inclination angle of the molding section 4 in accordance with the set value A, the detected value B, and the detected value C, and outputs the output value D. [

7, when the position detecting switch 51 detects the seedling connection position, the set value A is outputted from the setting switch 52, the detected value B is outputted from the inclination sensor 53, and the set value A is outputted from the inclination sensor 54 And acquires the detection value C, respectively. Then, the value of the detection value B is fixed as the median value, and the output value D is determined. In other words, the detection value B relating to the left-right inclination of the running section is input as a state of being stopped as a median value, whereby the variation of the detection value B of the inclination sensor 53 caused by the engine vibration is invalidated, So that the angle change is not affected.

Accordingly, even if the inclination sensor 53 erroneously senses the vibration of the engine as the left and right inclination at the time of the seedling connection operation or the inclination sensor 53 erroneously detects the inclination of the traveling part as the worker moves on the base, ) Is maintained to be horizontal with respect to the field surface, so that the seedling connection operation can be performed smoothly.

A low-pass filter 55 for filtering the detection value B from the inclination sensor 53 may be provided as shown in Fig. The low-pass filter 55 sets the cutoff frequency as the engine vibration frequency at the time of low-speed rotation in the seedling connection operation, and removes the high-frequency component caused by the engine vibration.

In this case, as shown in Fig. 9, the pulsation is removed at the detection value B1 after passing through the low-pass filter 55, so that malfunction of the inclination sensor 53 caused by engine vibration can be avoided. Particularly, when the running result of the running portion is gentle without invalidating the detection result by the inclination sensor 53, it is possible to control the inclination at an appropriate inclination angle with respect to the inclination.

In addition, when the position detecting switch 51 detects that the main shift lever has been operated to the seedling connection position, the control device 50 sets the gear position of the transmission 6 of the transmission 6 to neutral or releases the main clutch It is also possible to perform at least one of the operations of the braking device. As a result, the front and rear wheels can be stopped and the seedling connection operation can be performed more smoothly.

On the other hand, when detecting the seedling connection position by the position detecting switch 51, the horizontal control of the feeding section 4 may be stopped.

[Support structure of the eating power transmission case]

As shown in Figs. 10 and 11, the eating-part transmission case 8 for transmitting the power from the PTO shaft 7 to the eating and drinking part 4 is formed in the food part frame 15 along the gas- Is disposed between the upper guide rail 61 and the lower guide rail 62 and detachably mounted to the upper guide rail 61 via the stay 63. [

The stay 63 is formed in such a shape that the mounting side to the upper guide rail 61 is branched into a plurality (two in this embodiment). That is, the upper portion of the stay 63 and the upper guide rail 61 are mounted at two or more positions. As a result, the food-borne transmission case 8 can be stably supported by the upper guide rails 61, and the food borne transmission case 8 to which a large load is applied by the entry and exit of the power can be stably and firmly fixed.

On the other hand, in the case where the upper guide rail 61 is extended in the left-right direction in accordance with the operation of the sewing machine 1, it is also possible to adopt a configuration in which a fixing portion for an extended portion caught by the stay 63 is provided.

As shown in Fig. 11, the lower portion of the eating-and-drinking case 8 is fixed to the lower guide rail 62 through the bracket 64. [ The front portion of the food-borne transmission case 8 is detachably supported on a rolling point shaft 66 which supports the food compartment 4 so as to be tiltable right and left via a bearing cylinder 65. [

With this configuration, the foodtube transmission case 8, which is heavy and which is subjected to a large load by the power input and output, is guided to the upper guide rail 61 via the stay 63 at two or more points, It is possible to support at least four points in all of the rolling point axes 66, thereby making it possible to fix more stably and firmly.

[Clutch stop type]

12 and 13, the co-auxiliary stop clutch is composed of a unit clutch connected to the rotary shaft of each type of auxiliary tumblers and controlling the power transmission, and each unit clutch is connected to the motor unit 22 . The rotary shafts of the rotary cases in which the respective cooling shafts are disposed are linked to the shaftsubstrate driving shaft via respective unit clutches so that power transmission from the shaftsubstrate driving shaft to the rotating shafts is controlled by the respective unit clutches.

Stop clutch is configured such that each unit clutch operates through sliding of the wire 21 by driving the motor of the motor unit 22 and the motor unit 22 is configured so that the motor unit 22 rotates about the center of the front face of the face plate mounting table 12 And is mounted to the upper transverse frame 13 from above by bolt tightening or the like through a bracket.

The eating and stopping stop clutch is used when, for example, the unit clutch is adjusted for every two sets in the eating and drinking section 4 of the six-plate-type herringbone machine 1 shown in FIG. 13 and the planting machine 1 plantes the seedlings And the wire 21 connected to each of the unit clutches is pushed and pulled by the motor unit 22 to perform coarse movement.

The cam 26 of the motor unit 22 is controlled and driven by an electric motor device 28 mounted on the stay member 29 by a bolt. The unit clutch is operated by pushing and pulling the wire 21 to the lift by the cam 26 through the link member 25. [ The cam 26 is provided with a gear 27, and the cam 26 and the gear 27 are integrally fixed by a bolt and rotate about the center pivot axis. The center pivot shaft is fixed to the mown-plate rack 12 via a stay member 29 or the like.

The connecting lengths of the wires 21 connecting the motor unit 22 and the unit clutches are configured so that the lengths of the respective wires 21 are substantially the same. Therefore, it is not necessary to provide the connection of any of the wires 21 with a protruded length, and it is possible to prevent the wire 21 from being twisted or damaged and to improve maintainability, The castability can be made almost equal.

[Stopping device in the form of eight arms]

The stopping device 50 shown in Fig. 14 is disposed so that its center is arranged forward and inclined from the front to the rear as it goes from the center toward both sides. That is, the center portion is provided so as to be located forward of the other portion. In view of the upper surface, the stopping device 50 is arranged in the form of eight arms. A stop transmission case (74) is disposed at the center of the stop device (50) so that power is transmitted to both sides from the center. The stopper device 50 in the form of an arm is provided in front of the floating section 4 and in front of the float 14 composed of the center float 14A and the side float 14B. A part of the power from the drive shaft 9 is branched to the stopping transmission shaft 71 through the rear axle case 10 and the universal joint 72, the input shaft 73 and the stationary transmission case 74 to the drive shaft 75 extending toward both sides. A plurality of rotors 76 are fixed to the drive shafts 75, and the rotor 76 is rotated by rotation of the drive shaft 75 to stop the fields.

The input shaft 73, the idler shaft 80, and the drive shaft 75 are disposed in the stationary transmission case 74 as shown in Fig. At the end of the input shaft 73, a bevel gear 81 is fixed. The bevel gear 81 meshes with a bevel gear 82 fixed to an intermediate portion of the idler shaft 80. [ At both ends of the idler shaft 80, a taper gear 83 is disposed. The taper gear 83 meshes with the spur gear 84 provided at the end of the drive shaft 75.

Thus, in the drive system of the stopper 50, the stop transmission case 74 is disposed at the center, and the drive shaft 75 of the right and left side chambers is inclined rearward from the center. Therefore, in the stationary transmission case 74, the drive shaft 75 is disposed on the side of the input shaft 73 and the idler shaft 80 is disposed between the input shaft 73 and the drive shaft 75, And the rotation direction of the drive shaft 75 is the same direction.

The idler shaft 80 is disposed behind the input shaft 73 and the idler shaft 80 is engaged with the drive shaft 75 from the rear side.

Thus, by disposing the idler shaft 80, the position of the input shaft 73 can be moved backward. As a result, the stationary transmission case 74 can be made compact, so that a section in which the stationary transmission case 74 is not stopped (hereinafter referred to as an uneven ground section) can be reduced.

15, the intersection Q of the central axes of the drive shafts 75 disposed on the right and left sides is located in the middle portion of the input shaft 73 in the stationary transmission case 74. As shown in Fig. Therefore, the bevel gear 81 of the input shaft 73 and the bevel gear 82 of the idler shaft 80 are engaged with each other at the rear side of the intersection Q, and the size of the stationary transmission case 74 in the longitudinal direction is made compact can do. In addition, the idler shaft 80 is offset behind the input shaft 73 and the drive shafts 75, 75 to prevent the width of the stationary transmission case 74 from increasing in the left-right direction. As described above, the stop transmission case 74 is configured to have a smaller width in the front-rear direction and a smaller width in the left-right direction.

As described above, by arranging the stopper device 50 in the form of a barrel, the flow of water generated by the rotor 76 can be directed toward the inside, and the mud flows out to the side (adjacent seedlings) . As a result, it is possible to suppress the disadvantage of collapsing due to the flow of mud when passing through the side of the already transplanted adjacent seedlings.

Further, by disposing the stopper device 50 in an inclined shape, it is possible to make the moving direction and the rotation direction of the stopper device 50 have an inclination, so that foreign matter or the like can be prevented from being engaged with the rotor 76. [ Further, since the stationary operation is performed in a state in which the adjacent rotor 76 is partially overlapped when viewed in the traveling direction, the stationary operation is stopped in a direction inclined with respect to the moving direction of the moving machine 1, . On the other hand, it is also possible to prevent the occurrence of an uncorrected section by mounting the stationary rake on the rear of the stationary transmission case 74 separately.

By arranging the stopping device 50 in the form of a sash as viewed from the upper surface, a space can be secured in front of the center float 14A. It is possible to arrange the center float 14A by moving the center float 14A toward the center of the stopper 50 by using this space as shown in Fig. By arranging the center float 14A at the front side, the sensing accuracy by the float can be improved.

Alternatively, it is possible to extend the center float 14A forward by using the space formed by the stopping device 50, and in this case as well, the sensing accuracy can be improved by the float.

Further, the power inputting position to the stopping device 50 need not be strictly centered. For example, the stopping turning coaxial shaft 71 is straight toward the rear, and the folding angle of the universal joint 72 is the smallest The input shaft 73 may be disposed at the disengaged position. In this case, there may be a case in which the left side or the right side slightly deviates from the center in the width direction.

The present invention can be used as a rice plant having a stopper for stopping the dogs.

1: Rice planting 4: Eating and drinking
14: Float 20: Stopper
30: support link mechanism 36: mud guard plate
40: Operation lever 42: Contact bracket

Claims

[0002] As a rice-growing machine having a stop device for intermittent landing,
The stopper is supported to be able to move up and down with respect to the cooking cavity through a support link mechanism provided in a planting section,
Wherein the supporting link mechanism includes an operation lever for operating the lifting and lowering of the stopper through the support link mechanism,
The operation lever allows movement of the stopper to the up side regardless of the operation of the operation lever,
Wherein the support link mechanism has a pivot shaft provided along an extending direction of the stopper and is capable of lifting and lowering the stopper according to a pivoting motion of the pivot shaft,
Wherein the rotation base portion of the operation lever is rotatably provided on the rotation shaft,
A contact bracket fixed to the pivot shaft and contacting the pivot base from the upper side of the pivot base and a resilient member biasing the pivot base in such a direction as to bring the contact bracket in contact with the pivot base, Features a rice miller.

delete

The method according to claim 1,
Wherein the support link mechanism includes upper and lower links that move in the vertical direction in accordance with the pivotal movement of the pivot shaft,
Wherein the upper and lower links are disposed in front of the float of the cooking cavity as a rear of the rear wheel, and a mud-proof plate is provided on a front surface thereof.