KR101835947B1

KR101835947B1 - Rice transplanter

Info

Publication number: KR101835947B1
Application number: KR1020157015604A
Authority: KR
Inventors: 쿠니오 도이; 코우지 미야케; 아키라 이시카와; 토시후미 히라마쯔; 히데카즈 니우; 케이시 키누타
Original assignee: 얀마 가부시키가이샤
Priority date: 2012-12-17
Filing date: 2013-12-17
Publication date: 2018-03-07
Also published as: CN104853583A; CN104853583B; WO2014098101A1; KR20150084052A

Abstract

A rice paddy machine 1 having a meandering section 4 including a center float 14A for sensing a ground surface of a rice field G and is provided separately from the center float 14A and has a surface position of the rice field G And the sensing portion 21 of the sensor 20 is disposed on the side of the center float 14A just in front of the eating position P as shown in Fig. The position of the surface of the field of rice G can be accurately detected by the sensor 20 arranged in this manner, so that the accuracy of the food part can be improved.

Description

Rice transplantation {RICE TRANSPLANTER}

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a rice mill having a float for sensing the position of a surface of a soil which is a ground surface for packaging (field, hereinafter referred to as "rice field").

Japanese Unexamined Patent Application Publication No. 2002-125423 discloses a method of detecting a hardness of a rice field by detecting a rotation angle of a sensor arm by providing a sensor arm in a groove in the lower part of the center of the float, Which controls the rotation speed of the rice plant.

In order to improve the planting accuracy of seedlings, it is required to more accurately detect the hardness and height (surface position) of the fields.

For example, depending on the situation of the field, the float may float on the field and the detection accuracy of the field surface position by the float may be lowered. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a technique capable of accurately detecting the surface position of a field of rice.

A rice-growing machine according to a first aspect of the present invention is a rice-making machine having a rice-growing section including a float for sensing a ground surface with a rice field, and a sensor provided separately from the float, The sensing portion of the sensor is disposed immediately in front of the food portion as a side of the float.

With the sensor thus arranged, the surface position of the rice field can be accurately detected, and the accuracy of the food part of the seedling can be improved.

The sensing portion of the sensor is disposed inside the outermost width of the float.

The sensor is supported on the frame of the cooking chamber and is lifted and lowered in accordance with the change in the height of the float with respect to the cooking relief of the cooking cavity.

Wherein the sensor is rotatably supported at a position that is not influenced by a change in the height of the float with respect to the eating and drinking relief of the food and the surface position of the rice field sensed by the sensor is changed by the change .

The rice miller according to the second aspect of the present invention senses the height of a field surface to be eaten by a sensor disposed immediately in front of a float and a kind of food portion position and the stopper for stopping the on- And is arranged to be inclined rearwardly from the center toward the both side rooms.

The float is disposed at the center of the mold and is extended or moved toward the center of the stopper.

Wherein the stopping device has a drive shaft provided along the inclination, and a driving force for the stopping device is transmitted from the input shaft to the drive shaft via the idler shaft in the stationary transmission case provided at the center, and the idler shaft is connected to the input shaft and the drive shaft As shown in Fig.

According to the present invention, it is possible to detect the position of the surface of the rice field by the sensor in addition to the detection of the ground surface with the rice field by the float, so that it is possible to realize a high- .

Fig. 1 is an overall view of a rice milling machine.
Fig. 2 is a side view showing the molding part.
Fig. 3 is a top view showing a float and a sensor provided in the cooking chamber; Fig.
Fig. 4 is a side view showing a float and a sensor provided in the cooking chamber; Fig.
5 is a view showing another embodiment of the sensing unit of the sensor.
Fig. 6 is a view showing another embodiment of the float and the sensor provided in the housing. Fig.
Fig. 7 is a view showing another embodiment when the sensor is mounted in a transplanting period other than the 6-bed transit, and shows an example provided in an even-numbered (four-row) transplanting period.
Fig. 8 is a view showing another embodiment when the sensor is installed in a transplanting period other than the 6-tasting period, and shows an example provided in an even-numbered (8-row) type transplanting period.
Fig. 9 is a view showing another embodiment when the sensor is installed in a transplanting period other than the 6-bed transit, and shows an example in which the transplant is carried out in an odd-numbered (five-row) transplanting period.
Fig. 10 is a view showing another embodiment when the sensor is mounted in a transplanting period other than the 6-tiered type, and shows an example provided in an odd-numbered (seven-row) transplanting period.
Fig. 11 is a view showing an embodiment in which a vehicle speed sensor is mounted on the vehicle.
12 is a side view showing the positional relationship between the sensor and the vehicle speed sensor.
13 is a diagram showing the relationship between the depth of water and the vehicle speed and the motion of the vehicle speed sensor.
14 is a view showing an embodiment in which a water depth sensor is mounted on the food part.
Fig. 15 is a top view showing a float and a stopping device provided in the cooking chamber; Fig.
16 is a view showing a stationary transmission case.
Fig. 17 is a view showing an embodiment in which the front end face of the center float is extended toward the center of the stopper device, Fig. 17 (A) is a frontwardly moving embodiment, .
18 is a view showing another embodiment of the stopping device.
19 is a diagram showing an example of driving of the stopping device.
FIG. 20 is a diagram showing an example of application to an even-numbered (four-group) type weaving machine.
Fig. 21 is a diagram showing an example in which the present invention is applied to an even-numbered (eight-group)
22 is a diagram showing an example in which the present invention is applied to an odd-numbered (five-group) meander.
Fig. 23 is a diagram showing an example in which the present invention is applied to an odd-numbered (seven-group) meander.
24 is a view showing an embodiment in which the center float is moved forward;
25 is a view showing the supporting structure of the stopper.
26 is a view showing an operation lever for operating the vertical movement of the stopper.

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 a body through a lifting portion 5 and is vertically movable by the lifting portion 5. [ Power from the engine 2 is transmitted to the diaphragm 4 through the power transmitting portion 3. [ The herbicide 1 travels by driving the engine 2 and feeds the seedlings to the field G by the feeding section 4. [

In the present embodiment, a description will be given of a case where some kind of food processing is performed at a predetermined depth from the surface of the field of rice G while the rice plant W is placed on the field G. FIG. On the other hand, the same technical idea can be applied to the food processing in a state in which the plant W is not laid on the field G.

The driving force from the engine 2 is transmitted to the PTO shaft 7 through the transmission 6 of the power transmitting portion 3. [ The PTO shaft 7 is provided protruding rearward from the transmission 6. Power is transmitted from the PTO shaft 7 through the universal joint 6 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. [

2, the food compartment 4 includes a food arm 11, a food tanks 12, a seedling rack 13, a float 14, and the like. The food auxiliary tank 12 is attached to the food arm 11. The food arm (11) is rotated by the power transmitted from the eating and delivering case (8).

A seedling (R) is supplied from the seedling rack (13) to the food tank (12). Accompanied with the rotational movement of the food arm 11, the food stall 12 is inserted into the field G and the seedling R is eaten so as to have a predetermined depth of food (the amount of protrusion of the food tank 12). On the other hand, in the present embodiment, a rotary type tappet is adopted, but a crank type tappet can also be used.

[pontoon]

As shown in Fig. 3, the molding section 4 has a plurality of floats (center float 14A and two side floats 14B in this embodiment) arranged in the left-right direction. Each float is mounted on a food frame (15) constituting the food compartment (4). More specifically, each float is mounted on the pivot support shaft 16 provided in the food part frame 15 via the link mechanism 17 so as to be able to ascend and descend.

The center float 14A disposed at the center is used as a float sensing body for detecting a ground surface sensing a ground surface with a rice field. Specifically, the target angle of the center float 14A is determined on the basis of the swing angle of the center float 14A which rotates in accordance with the irregularities on the surface of the field, and the target angle of the center float 14A is determined, The height (depth of the food) is controlled. In other words, since the target angle of the center float 14A is determined in consideration of the settling amount of the center float 14A, the height of the equation portion considering the field hardness is determined.

[sensor]

As shown in Figs. 3 and 4, a sensor 20 for detecting the surface position of the rice field is provided immediately in front of the food position P of the cooking cavity 4. The sensor 20 extends from the front to the rear. Since the sensor 20 is rotatably supported and is received by gravity around the pivot point, the state in which the distal end portion is in contact with the surface of the field G is maintained. That is, the herbicide 1 proceeds so that the front end of the sensor 20 always follows the surface of the rice field G as it is.

The positional relationship between the sensor 20 and the paddy field G can be detected by measuring the rotation angle of the sensor 20 to detect the actual height of the paddy field G (paddy field height at which the seedling R is fed) . Thus, the settlement amount of the center float 14A (the amount of sinking into the soil field G in a muddy state) can be measured by detecting the actual height of the field G by the sensor 20. [

The sensor 20 realizes sensing immediately before the eating of the seedling (R), so that the sensing accuracy can be improved.

A plurality of bar bodies each having a small diameter extend parallel to the front end of the sensor 20. The tip of the sensing portion 21 is bent upward. In other words, by forming the sensing portion 21 to be elongated and thin, the contact area between the rice field G and the rice W can be reduced to reduce the resistance, thereby making it difficult for the sensing portion 21 to move away from the rice field G . At the same time, the sensing portion 21 is formed into a rake-like shape by a plurality of rods, thereby preventing foreign matter from coming into contact with the sensing portion 21. [

As the material constituting the sensing portion 21, it is preferable to have a strength enough to hold the shape with respect to a desired length such as a wire. The length of the sensing portion 21 is preferably such that the sensor 20 extends upward beyond the rice W in contact with the rice field G. [

As described above, the sensor 20 is provided separately from the center float 14A used for detecting the plow surface, and the sensor 20 detects the position of the plow surface in the vicinity of the plow position P.

This makes it possible to correct the height of the food portion obtained by the detection of the field surface by the center float 14A on the basis of the actual height of the field G obtained by sensing the surface of the field of rice paddies by the sensor 20. [ Therefore, the food portion of the seedling (R) can be performed with good precision according to the condition of the field G.

The position immediately ahead of the food position P is a field G after being stopped by a float to eat the seedling R and the position of the surface of the field G, It is possible to reduce the influence of the irregular shape appearing on the sensor 20 on the sensor 20 and the influence of the muddy water flow caused by the float on the sensor 20. [

As shown in Fig. 3, the sensor 20 is disposed such that the sensing portion 21 is located inside the outermost width of the center float 14A. That is, the sensing portion 21 is disposed inside the end portion of the water flow generating source caused by the center float 14A during running, so that the sensing portion 21 is not influenced by the mud flow of the float. In addition, the rice field G is stopped by the center float 14A so that the influence of foreign matter does not reach the sensing unit 21. [

That is, at the tip of the center float 14A, the umbrella portion 22 protruding from both sides is provided. A sensor 20 is disposed behind the umbrella portion 22. Thus, the influence of the wave of the center float 14A received by the sensing unit 21 can be minimized.

As shown in Fig. 4, the sensor 20 is mounted on a cooking chamber frame 15 which supports the cooking cavity 4, and ascends and descends with the cooking cavity 4 rising and falling. The center float 14A and the sensor 20 are lifted and lowered in synchronism with the food compartment 4 because the center float 14A is also mounted on the food compartment frame 15. [ By thus maintaining the positional relationship between the center float 14A and the sensor 20 in the height direction, it is possible to improve the reliability of the detection result of the sensor 20 and improve the reliability of the detection result of the sensor 20, The information about the user can be utilized as much as possible.

A restricting member (not shown) for restricting the rotation angle of the sensor 20 to the downward direction is provided at the mounting portion of the sensor 20 with respect to the eating frame. As a result, the rotation range of the sensor 20 is limited, and the sensor 20 can be surely moved away from the ground when the feeding section 4 is raised, such as during running.

By changing the height of the sensor 20 according to the height change of the food tanks 12 of the food part 4, the sensor 20 can be moved in conjunction with the depth of the food part set in the food part 4 It is possible to effectively use the detection result of the sensor 20 also for the depth of the food portion set in accordance with the depth of the rice paddy W and the hardness of the rice field G. [

On the other hand, the sensor 20 may be mounted at a place other than the food frame 15. That is, the sensor 20 may be mounted at a position that is not affected by the height change of the center float 14A with respect to the eating auxiliary tank 12 of the cooking cavity 4. [ In this case, by correcting the detection result by the sensor 20 based on the height of the mounting position and the height difference of the molding part 4, it is possible to accurately detect the position of the field surface and realize the optimal depth of food part .

In the above embodiment, the sensing unit 21 whose rear end portion is bent upward is described, but the shape of the sensing unit 21 is not limited thereto. Fig. 5 shows another embodiment of the sensing unit 21. Fig.

5 (A) shows an embodiment in which the rear end portion of the sensing portion 21 is curved upward. 5 (B) shows an embodiment in which the rear end portion of the sensing portion 21 is curved upward and the rear end thereof is curved to point forward. 5 (C) shows an embodiment in which the rear end portion of the sensing portion 21 is bent upward, and the rear end is bent to point upward.

The sensor 20 may be provided on both side floats 14B and the sensing portion 21 may be disposed immediately in front of the eating position P as shown in Fig. In this case as well, it is preferable to dispose the sensing portion 21 behind the umbrella portion 22 of each side float 14B.

By detecting the surface of the field by the sensor 20 provided on the side float 14B of both sides of the room, it is possible to simultaneously detect the position of the ground in the far left position, thereby improving the detection precision. And the like.

The rice hatching machine 1 described in the above embodiment can be a six-type hatchery, a four-hatching machine shown in Fig. 7, an eight-hatching machine shown in Fig. 8, Similarly, the sensor 20 can be provided for odd-numbered joining stations such as breakfast.

That is, one or more sensors 20 are disposed in at least one of the plurality of floats, and the sensor 20 is provided on the inner side of the outermost width of the float, that is, behind the umbrella portion protruding from the float side, And has the same action and effect as the shape. 8, the float provided with the sensor 20 is not limited to the center float but may be provided on the side floats located on both sides of the center float or on the outermost side float, There is an advantage that the irregularities in the left and right direction can be detected.

[Vehicle speed sensor]

As shown in Figs. 11 and 12, a vehicle speed sensor 90 for sensing the vehicle speed of the herbicide 1 is provided in the feeding section 4. Fig. The vehicle speed sensor 90 includes a plate 91 disposed to face the planar portion with respect to the advancing direction of the herringbone 1, an arm 92 supporting the plate 91 from the front side, And a rotary part 93 rotatably supporting the rotary part 93. The rotation amount of the rotary part 93 is sensed by the potentiometer 94. [

The torsion torque of the potentiometer 94 applied to the turning portion 93 and the torsion torque of the pot 91 are applied to the plate 91 in a state where the plate 91 is lowered rearwardly by the normal position of the plate 91, And the lower end is set in contact with the bottom of the field G.

In addition, the vehicle speed sensor 90 is disposed between the center float 14A and the side float 14B in the molding section 4. [ That is, the position of the sensor 20 provided in the diaphragm 4 and the position of the vehicle speed sensor 90.

The resistance of the water stream received by the plate 91 and the rotation of the arm 92 are set so that the vehicle speed sensor 90 detects a deep water depth and a high vehicle speed as shown in Fig.

When the water depth is shallow and the vehicle speed is low, the resistance generated in the plate 91 becomes smaller than the weight applied to the plate 91 or the like, and the arm 92 does not turn. Even when the water depth is shallow and the vehicle speed is high, the resistance received by the plate 91 from the water stream becomes smaller than the force applied to the plate 91, so that the arm 92 does not rotate. Further, even when the depth of water is high and the vehicle speed is high, the resistance received by the plate 91 from the water flow becomes smaller than the force applied to the plate 91, and the arm 92 does not rotate.

On the other hand, only when the water depth is high and the vehicle speed is high, the resistance that the plate 91 receives from the water flow becomes larger than the weight applied to the plate 91 and the torsional torque of the potentiometer 94, and the arm 92 rotates upward. By detecting the amount of rotation of the arm 92 with the potentiometer 94, the vehicle is sensed at a high speed under a deep water condition, and the vehicle speed is sensed.

The resistance of the water stream received from the surface of the plate 91 becomes large and the arm 92 rotates when the vehicle speed of the herbicide 1 becomes higher than the predetermined speed, do. By detecting the rotation of the arm 92, it is possible to detect the high speed operation of the herbicide 1 in a deep water depth condition.

At the time of high-speed operation, the center float 14A, which is a float sensing float, floats, but it is possible to correct the float of the center float 14A by sensing it by the vehicle speed sensor 90. [

Since the vehicle speed sensor 90 is disposed between the center float 14A and the side float 14B so that the sensor 20 can be positioned at the side of the sensor 20, Can be improved. In addition, the height of the wave generated between the floats can improve the vehicle speed sensitivity.

[Water depth sensor]

As shown in Fig. 14, the water depth sensor 95 for sensing the depth of the paddy field W to the paddy field G is provided in the food compartment 4. The water depth sensor 95 is constituted by a cushion 96 having buoyancy and an arm 97 supporting the cushion 96 provided at the tip. The height of the sub-sac 96 is detected by detecting the rotation angle of the arm 97 by means of a potentiometer or the like to acquire data on the depth of the ground W.

The depth sensor 95 is disposed at a position in the vicinity of the eating position P where the sub-sac 96 does not interfere with the seedling R that has been cooked. For example, as shown in Fig. 14 (A), the rotation base portion of the arm 97 may be float 14, or alternatively, And is mounted at a position where it can be raised and lowered in conjunction with the change in height of the frame.

As described above, it is possible to add the detection information of the depth of water by the depth sensor 95 to the detection of the field surface position by the sensor 20, thereby contributing to the improvement of the accuracy of the food part. Further, by adjusting the buoyancy of the bucket 96, it is possible to detect the optimum depth of water according to the vehicle speed and the like.

[Stopping device]

As shown in Figs. 15 and 16, the stopper 30 for stopping the canopy is provided in front of the float 14 (14A, 14B) as a front portion of the diaper 4.

A part of the power from the drive shaft 9 is branched to the stopping transmission shaft 31 through the rear axle case 10 and the universal joint 32, the input shaft 33 and the stationary transmission case 34 to the drive shafts 35 extending toward both sides. A plurality of rotors 36 are fixed to the drive shafts 35 and the rotor 36 is rotated by rotation of the drive shaft 35 to stop the field G. [

The stopper (30) is disposed at the center in front and inclined from the front toward the rear in the direction from the center toward the 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 30 is arranged in an eight-letter form. A stop transmission case 34 is disposed at the center of the stop device 30 to transmit power from the center to both sides.

16, the input shaft 33, the idler shaft 40, and the drive shaft 35 are disposed in the stationary transmission case 34. As shown in Fig. A bevel gear 41 is fixed to the end of the input shaft 33. The bevel gear 41 meshes with the bevel gear 42 fixed to the intermediate portion of the idler shaft 40. At both ends of the idler shaft 40, a taper gear 43 is disposed. The taper gear 43 is engaged with the spur gear 44 provided at the end of the drive shaft 35. [ On the other hand, the spur gear 44 may be a taper gear.

In this manner, in the drive system of the stopper 30, the stationary transmission case 34 is disposed at the center, and the drive shaft 35 of both left and right sides is inclined rearward from the center. Therefore, in the stationary transmission case 34, the drive shaft 35 is disposed laterally with the input shaft 33 as the center, and the idler shaft 40 is disposed between the input shaft 33 and the drive shaft 35, And the rotation direction of the drive shaft 35 is the same direction.

The idler shaft 40 is disposed behind the input shaft 33 and the idler shaft 40 is engaged with the drive shaft 35 from the rear side.

As such, by disposing the idler shaft 40, the position of the input shaft 33 can be rearwardly moved. As a result, the stationary transmission case 34 can be made compact, and a section in which the stationary transmission case 34 is not stopped (hereinafter referred to as an uneven ground section) can be reduced.

That is, as shown in Fig. 16, the intersection Q of the center axis of the drive shaft 35 disposed on the right and left is located in the middle of the input shaft 33 in the stationary transmission case 34. [ The bevel gear 41 of the input shaft 33 and the bevel gear 42 of the idler shaft 40 are engaged with each other at the rear side of the intersection Q so that the size of the stationary transmission case 34 in the front- can do. In addition, the idler shaft 40 is offset behind the input shaft 33 and the drive shafts 35, 35 to prevent the width of the stationary transmission case 34 from increasing in the lateral direction. As described above, the stop transmission case 34 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 30 in the form of a barrel, the flow of water generated by the rotor 36 can be directed toward the inside, and the mud flows out to the side (adjacent seedlings) . Thus, it is possible to suppress the inconvenience that the seedlings fall down due to the flow of mud when passing through the side of the already transplanted adjacent seedlings.

By arranging the stopping device 30 in an inclined shape, it is possible to make the moving direction and the rotation direction of the stopping device 30 inclined so that foreign matter or the like can be prevented from being engaged with the rotor 36. [ Also, since the stationary operation is performed in a state in which the adjacent rotor 36 partially overlaps when viewed in the direction of travel, the stationary section can be reduced. It is also possible to prevent the occurrence of an uncorrected section by mounting the stationary brake separately to the rear of the stationary transmission case 34. [

By arranging the stopping device 30 in the form of a sash as viewed from the upper surface, a space can be secured in front of the center float 14A. As shown in Fig. 17A, it is possible to arrange the center float 14A by moving it toward the center of the stopping device 30 while keeping the shape of the center float 14A by using this space. By arranging the center float 14A at the front side, the sensing accuracy by the float can be improved. It is also possible to support the center float 14A and the side float 14B with the rotation support shaft 16 by arranging the shape of the center float 14A directly as it is, .

Alternatively, as shown in Fig. 17 (B), it is also possible to leave the position of the rear end face of the center float 14A and to extend the front end face forward by using the space formed by the stopper 30, In this case as well, it is possible to improve the sensing accuracy by the float. In addition, by increasing the area of the center float 14A, the sensing ability is increased, and the lifting and lowering of the molding portion 4 can be controlled optimally. Further, when the float shape of the center float 14A is changed, the flow and shape balance of the clay can be optimally designed, and the accuracy of the elevation control of the molding part 4 can be further improved.

On the other hand, the power input position with respect to the stopping device 30 need not be strictly centered. For example, when the stopping coaxial shaft 31 is straight toward the rear and the folding angle of the universal joint 32 is the most The input shaft 33 may be disposed at a position where it is reduced. In this case, it may be shifted slightly to the left or right from the center in the width direction.

[Other Embodiments of Stopping Device]

18 and 19 show the configuration of the stopping device 50 which is another embodiment of the stopping device.

A part of the power from the drive shaft 9 is diverted to the stop transmission shaft 51 and the stop transmission shaft 51 is rotated from the stop transmission shaft 51 via the universal joint 52 and the input shaft 53, ). Power is transmitted from the stationary transmission case 54 to the rotor drive shaft 55 in the stationary transmission case 54 and power is transmitted from the rotor drive shaft 55 to the rake drive shaft 56. [ Power is transmitted from the rake drive shaft 56 to the stationary transmission case 57 on the opposite side and power is transmitted from the rake drive shaft 56 to the rotor drive shaft 58 in the stationary transmission case 57.

A plurality of rotors 59 are fixed to the rotor drive shaft 55 · 58 and the rotor 59 is rotated by the rotation of the rotor drive shaft 55 · 58 to stop the field G. A rake 60 extending laterally is provided in the vicinity of the rake drive shaft 56 to convert the rotational motion of the rake drive shaft 56 into a reciprocating motion in the forward and backward directions The field G is stopped by the exercise.

19, a rotor drive shaft 55 is provided in the rear of the input shaft 53 in the stationary transmission case 54. [ A bevel gear 61 fixed to the input shaft 53 and a bevel gear 62 fixed to one end of the rotor driving shaft 55 are engaged with each other. The spur gear 63 is fixed to the other end of the rotor drive shaft 55 and the spur gear 63 is engaged with a spur gear 64 fixed to an end of the rake drive shaft 56. The rake drive shaft 56 is disposed forward of the rotor drive shaft 55 and the input shaft 53 is engaged with the rake drive shaft 56 from the rear side through the rotor drive shaft 55.

The rake 60 is supported on a pivot shaft 60a provided in the left and right direction and is rotatable around the pivot shaft 60a. Like stop piece 60b is provided downward from the pivot shaft 60a and a plate top piece 60c is provided rearward from the pivot shaft 60a. A cam 56a is fixed to the rake drive shaft 56. [ The long side of the cam 56a is set to a length that can be in contact with the top piece 60c and the short side is set to a length that does not contact the top piece 60c.

That is, by rotating the rake drive shaft 56, the cam 56a and the upper piece 60c of the rake 60 come into contact with each other, and the rake 59 rotates around the pivot 59a (moves backward). When the cam 56a further rotates and does not come into contact with the upper piece 60c, the restoring force of the return spring 60d provided on the upper piece 60c of the rake 60 causes the rake 60 to return to its original position Go back to posture (move forward). In this manner, the rake 60 reciprocates in the front-rear direction.

As described above, the stopping device 50 is divided into three parts, that is, the rake 60 at the center part and the rotor 59 · 59 at both the right and left side parts. The rake (60) in the stop device (50) is arranged forward of the rotor (59 · 59). In this manner, the rake 60 at the center portion is disposed forward, thereby securing a space in front of the center float 14A. Further, the rake 60, which is not accompanied by the rotational motion, does not occupy the width in the forward and backward directions, and thus can contribute to securing more space.

The driving force for the stopping device 50 is transmitted from the stationary transmission case 54 provided on the side of the one side. In this stationary transmission case 54, the input shaft 53 is engaged with the rake drive shaft 56 from the rear side through the rotor drive shaft 55. In other words, since the input shaft 53 can be bent backward, the folding angle of the universal joint 52 can be reduced, and the life of the joint can be improved.

It is possible to use the space in front of the center float 14A and to arrange the center float 14A in the shape of the center float 14A and move it toward the center of the stopper 50 as shown in Fig. By arranging the center float 14A at the front side, the sensing accuracy by the float can be improved. It is also possible to support the center float 14A and the side float 14B with the pivot support shaft 16 by arranging the shape of the center float 14A directly as it is, .

Alternatively, the space formed by the stopping device 50 can be used to extend the forward end face of the center float 14A without changing the position of the rear end face. In this case as well, Improvement can be achieved. In addition, by increasing the area of the center float 14A, the sensing ability is increased and the lifting and lowering of the molding portion 4 can be controlled optimally. In addition, when changing the float shape of the center float 14A, it is possible to optimize the flow and shape balance of the soil, and the accuracy of the elevation control of the molding section 4 can be further improved.

On the other hand, the rake 60 does not always have to swing in the front-rear direction. For example, even if the rake 60 is fixed, it can be stopped by grounding the field G.

Although the rice-maker 1 described in the above embodiment is a 6-bowl type, it is not limited to the 4-bowl type shown in FIG. 20, the 8-type breakfast shown in FIG. 21, It is also applicable to odd-numbered joinery such as breakfast.

24, when two sensing floats are disposed at the center of the molding section 4, two floats at the center are provided to the space obtained by the stopper 30 formed in the shape of a sword, It is also possible to enhance the sensing precision of the float sensing body by closely contacting the sensing surface. In this way, when a plurality of floats are present near the center of the molding section 4, they have the same effect as the above-described embodiment by integrally moving or extending the floats integrally.

[Support Structure of Stopper]

As shown in Fig. 25, the stopping device 30 is attached to the food compartment frame 15 via the support link mechanism 70. Fig. The supporting link mechanism (70) supports the stopping device (30) so as to be able to move up and down with respect to the molding part (4).

The support link mechanism 70 includes a rotation shaft 71 provided along the extension direction of the stopper 30 (width direction of the food part frame 15), an arm 97 fixed to both ends of the rotation shaft 71, And an auxiliary arm 74 for connecting the lower end of the upper and lower links 73 and the lower part frame 15 to each other.

The rotary shaft (71) is rotatably supported at the both ends by the support frame (15) through the support arm (75). In this manner, in the support link mechanism 70, the arm 97 is pivoted with the rotation of the rotary shaft 71, and the upper and lower links 73 are moved up and down so that the food compartment frame 15 (4)) can be changed.

The upper and lower links 73 are provided between the rear wheel and the float 14. A mud-proof plate 76 is provided on the lower front surface of the upper and lower links 73. The mud-proof plate 76 is a plate-like member whose upper portion is bent toward the rear, and prevents the mud that is sprung by the rear wheel from being caught by the float 14, 30), there is no influence of the clay on the food processing.

As shown in Fig. 26, at the center of the rotating shaft 71, an operating lever 80 for rotating the rotating shaft 71 is provided. The rotation base portion 81 of the operation lever 80 is rotatably supported with respect to the rotation shaft 71. The rotating base portion 81 is biased downward by the contact bracket 82 fixed to the rotating shaft 71. [

The contact bracket 82 contacts the rotation base portion 81 from above. A torsion spring 83 is provided between the contact bracket 82 and the rotation base portion 81. The contact bracket 82 is biased toward the rotation base portion 81 by the elastic force of the torsion spring 83. [ That is, the operating lever 80 is connected to the rotating shaft 71 through the rotating base portion 81 and the contact bracket 82. [

A retaining bracket 85 for retaining the pivotal position of the operation lever 80 is provided on the side of the operation lever 80. The holding bracket 85 is fixed to the eating frame 15. The holding bracket 85 is provided with a plurality of engagement grooves 85a at predetermined heights. The rotation position of the operation lever 80 is maintained and the height of the stopper 30 is determined by engaging one of the engagement grooves 85a and the engagement plate 80a mounted on the intermediate portion of the operation lever 80. [

The rotation base portion of the operation lever 80 and the lower end of the holding bracket 85 are connected by a spring 86 and are biased by the spring 86 to rotate the operation lever 80 upward. That is, when the engaging plate 80a is removed from the engaging groove 85a, the biasing force of the spring 86 acts in the direction in which the operation lever 80 rotates upward.

Further, the operation lever 80 is biased toward the bracket 85 side by the return spring 87. As a result, the retaining state of the retaining plate 80a of the operation lever 80 and the retaining groove 85a of the bracket 85 is maintained.

For example, when an upward load is applied to the stopper 30, such as when it passes through a protruding rigid dogleg, the stopper 30 tries to move upward. Then, the load is transmitted to the rotary shaft 71 through the upper and lower links 73 as a rotational force.

When the rotational force applied to the rotating shaft 71 is greater than the resilient force of the torsion spring 83, that is, when a large load acts on the stopper 30, the contact bracket 82 contacts the rotating base portion 81, it is possible to allow the stopper 30 to move upward regardless of the holding position of the operation lever 80. [ Therefore, even when a large load is applied upward to the stopper 30 while maintaining the height of the stopper 30 determined by the operation lever 80, the stopper 30 The breakage of the stopper 30 can be prevented. Further, the vertical movement can be absorbed by the elastic force of the torsion spring 83.

Further, by changing the elastic modulus of the torsion spring 83 appropriately, it is possible to change the grounding load of the stopper 30 and the field G of rice. 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.

[Other Embodiments of Support Structure of Stopper]

The stopping device 30 may be supported so as to be movable up and down using an electronically controlled actuator. In this case, the control of the actuator can be performed in synchronism with the elevation control of the molding section 4, and according to the depth control of the food portion (control of the depth of the food portion by the float 14 and the sensor 20) It is possible to easily set the optimum stop depth by the stopping device 30. [ Further, the supporting structure of the stopper 30 can be simplified.

The present invention is applicable to a rice mill having a rice-growing section including a float for detecting a ground surface with rice fields.

1: Rice planting 4: Eating and drinking
11: Food arm 12: Food aid
14: float 14A: center float
14B: Side float 15: Food frame
20: sensor 21:
22: umbrella part 30: stop device
32: universal joint 33: input shaft
34: stationary transmission case 35: drive shaft
40: idler shaft 41: bevel gear
42: Bevel gear 43: Taper gear
44: Spur gear G: Paddy field
P: Food position R: seedlings
W: Nutrition

Claims

And a center float disposed in the center among a plurality of floats arranged in the left and right direction, wherein the center float has a umbrella portion protruding laterally,
The height of the food portion is determined from the angle of the center float according to the unevenness of the field of rice, and the center float is supported at the right and left central portions of the food frame of the food portion,
Apart from the center float, there is provided a sensor for sensing the actual height of the paddy field,
The sensor is characterized in that the proximal end portion is rotatably supported on the food frame and extends backward, the distal end portion is held in contact with the surface of the field of rice,
A small-diameter rod having a distal end bent upward as a sensing portion extends parallel to the front end of the sensor in plan view,
The sensing portion of the sensor is disposed so as to be located immediately in front of the various kinds of food portion positions after the stop by the center float as the inner side of the outermost width of the center float and the rear of the umbrella portion of the center float,
The center float and the sensor are configured to ascend and descend in synchronization with the ascending and descending of the above-
And the height of the food portion obtained by the center float can be corrected based on the actual height of the field surface obtained by the sensor.

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A rice-growing machine comprising a rice-growing section connected to a machine body through a raising and lowering section for raising and lowering in a vertical direction and for transmitting power from an engine through a power transmitting section,
The height of the plowing surface is sensed by the sensor disposed immediately in front of the food portion position of the float and the seedling,
Wherein the stopper for stopping the stopper is disposed forward of the float and is disposed to be inclined rearwardly from the center toward the both sides of the float,
Wherein the float is disposed at the center of the cooking cavity and is extended or moved toward the center of the stopper.

The method of claim 3,
Wherein the stopping device has a drive shaft provided along the inclination,
Wherein the driving force for the stopping device is transmitted from the input shaft to the drive shaft through the idler shaft in the stationary transmission case provided at the center, and the idler shaft is disposed offset to the rear of the input shaft and the drive shaft.

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