JP2007236265A - Adjusting device of number of transplanting row of seedling in riding type rice transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To aim at the improvement of operability and reduction of erroneous operation by making the operating position of each of clutch levers as capable of easily and exactly being recognizable by a glimpse in a riding type rice transplanter arranging a multiple number of seedling-transplanting mechanisms 17 for performing the transplantation of the seedlings on a field side by side in lateral direction, installing a row-stopping clutch mechanism 20 intermittently operating the driving of each of the seedling-transplanting mechanisms or each of the pair of the seedling-transplanting mechanisms and on the other hand, installing clutch levers 21, 22, 23 for each of the row-stopping clutch mechanisms in the vicinity of a driving seat 8 where a worker rides so as to drive the seedling-transplanting mechanism on rotating the lever in frontal direction and to stop the seedling-transplanting mechanism on rotating the lever in rear direction. <P>SOLUTION: Each of the clutch levers is constituted so that it falls as substantially horizontal state or close to the same in the rear direction when the clutch lever is rotatively operated in rear direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a variable device for arbitrarily changing the number of seedling planting lines for a farm scene in a riding type rice transplanter from the position of a control seat on which an operator is boarded.

  In general, a riding-type rice transplanter arranges a plurality of seedling planting mechanisms for planting seedlings in a field, arranged at appropriate intervals in the transverse direction with respect to the traveling direction, and each seedling planting mechanism is connected to an engine. The seedlings are planted in a plurality of strips by being driven by power transmission from a power source such as a five-row plant, six-row plant, or eight-row planter. A device for changing the number of seedling planting strips is provided so that the number of planting strips is changed to a smaller number of planting strips.

Conventionally, this type of device for changing the number of seedling planting lines has been disclosed in, for example, Patent Document 1 and the like, in which a streak clutch mechanism for intermittently transmitting power to each of the seedling planting mechanisms is provided for each seedling. Provided for each planting mechanism or for each pair of seedling planting mechanisms, while providing a clutch lever for each of the anchoring clutch mechanisms so as to rotate in the front-rear direction in the vicinity of the control seat on which the operator is boarded, Among the above seedling planting mechanisms, any seedling planting mechanism, or any pair of seedling planting mechanisms, is configured to change the number of seedling planting strips by stopping the clutch lever by rotating it backward. ing.
JP 2003-219715 A

  However, the conventional variable device has a seedling planting mechanism when the clutch levers for changing the number of seedling planting strips are rotated forward as described in Patent Document 1 and the like. Although the seedling planting mechanism is configured to stop when driven and rotated backward, each clutch lever has a shape extending straight from the center of rotation in the radial direction. Among them, it is not possible to tell at a glance whether any clutch lever is in a position to drive the seedling planting mechanism or to stop the seedling planting mechanism, and the operability is low. There was a problem that there was a high risk of incorrect operation.

  Moreover, each of the clutch levers is in an upright form when operated to a position where the seedling planting mechanism is stopped by rotating it backward, and the work floor provided near the control seat is provided. Further, there is a problem that the operator is likely to be in the way when performing various operations such as seedling on the work floor.

  This invention makes it a technical subject to provide the variable apparatus of the number of seedling planting strips which eliminated these problems.

In order to achieve this technical problem, claim 1 of the present invention provides:
“Striping for arranging seedlings in the field by arranging a plurality of seedling planting mechanisms in the horizontal direction and intermittently driving the seedlings for each seedling planting mechanism or a pair of seedling planting mechanisms. While the clutch mechanism is provided, the seedling planting mechanism is driven when the clutch lever for each of the above-mentioned streak clutch mechanisms is rotated forward in the vicinity of the control seat on which the operator is boarded, and is rotated backward. In the riding rice transplanter that is provided to stop the seedling planting mechanism,
Each of the clutch levers is configured to fall substantially horizontally or close to the rear when the clutch lever is rotated backward. "
It is characterized by that.

Further, claim 2 of the present invention is
“In the first aspect of the present invention, when each of the clutch levers is rotated backward, the grip portion thereof is substantially parallel to or parallel to the work floor provided near the control seat. It is configured to be close. "
It is characterized by that.

Furthermore, claim 3 of the present invention provides
“In each of the first and second aspects of the present invention, each of the latching clutch mechanisms is provided with a spring means for holding it in power transmission, while each of the clutch levers is in a posture when it is rotated forward. Is held by the spring means, and the posture when it is rotated rearward is held by exceeding the fulcrum in the spring means.
It is characterized by that.

  As described in the first aspect, each clutch lever for changing the number of seedling planting strips is tilted substantially horizontally or close to the rear when the clutch lever is rotated rearward. As a result, when the clutch lever is rotated backward so as to stop the seedling planting mechanism, the clutch lever will fall horizontally or close to the rear. It can be easily and accurately identified at a glance whether any one of the clutch levers is in a position for driving the seedling planting mechanism or in a position for stopping the seedling planting mechanism. As a result, operability can be greatly improved and erroneous operations can be reliably reduced.

  In this case, by configuring each clutch lever as described in claim 2, in the state where each clutch lever is in a position to stop the seedling planting mechanism, the projecting dimension from the work floor is set. Since the clutch lever can be greatly lowered, it can be more reliably reduced than in the case of the prior art that each clutch lever interferes with various operations such as seedling on the work floor.

  According to the third aspect of the present invention, the one spring means can hold each clutch lever at a position for driving the seedling planting mechanism and a position for stopping the seedling planting mechanism. Since this can be achieved, the structure for holding the clutch levers in the two positions can be very simply configured.

  Hereinafter, drawings when the embodiment of the present invention is applied to a six-row riding rice transplanter will be described.

  1 and 2, reference numeral 1 denotes a six-row riding rice transplanter. The rice transplanter 1 includes a traveling machine body 2 supported by a pair of left and right front wheels 3 and a rear wheel 4, and the traveling machine body. 2 and a seedling planting device 6 that is mounted on the rear part of the plant 2 so as to be able to move up and down so that seedling planting is performed on the farm scene 5 with respect to the six strips.

  The traveling machine body 2 is equipped with an engine 7 at the front and a control seat 8 at the rear. Further, the power from the engine 7 is appropriately shifted and transmitted to the wheels 3 and 4. A traveling mission 9 is installed, and is configured to travel forward at an appropriate speed in the direction indicated by the arrow A. In addition, the rear part of the control seat 8 and the left and right side parts of the traveling body 2 are A cover case 10 is provided, and the upper surface of the cover case 10 replenishes the seedling planting device 6 with seedling mats mounted on the left and right sides of the front part of the traveling machine body 2 while riding on the cover case 10. It is formed on the work floor 11 for performing various operations such as seedling joining.

  In addition, as shown by a two-dot chain line, the work floor 11 is equipped with a fertilizer spraying mechanism 12 for spraying fertilizer on each of the planting strips for seedling planting by the seedling planting device 6. There are cases.

  As is well known in the art, the seedling planting device 6 is composed of three seedling planting units with a double row planting as one unit, that is, a first seedling planting unit 13, a second seedling planting unit 14, and a third seedling planting unit. By arranging the planting units 15 side by side in a horizontal direction, a total of six strips are formed.

  Each of the seedling planting units 13, 14, and 15 includes a transmission case 16 that transmits power from the engine 7 and a conventionally known rotary seedling planting mechanism that is mounted on both the left and right sides of the transmission case 16. 17, a seedling stage 18 mounted on the upper surface of the transmission case 16, and a float 19 mounted on the lower surface of the transmission case 16 so as to slide on the surface of the farm scene 5. Although not shown in the figure, a vertical feed mechanism for a seedling mat placed thereon is provided. On the transmission case 16, power transmission to a pair of seedling planting mechanisms 17 on both the left and right sides is simultaneously operated intermittently. A streak clutch mechanism 20 is provided.

  As shown in FIG. 7 and FIG. 8, the streaking clutch mechanism 20 is rotatably driven by a driven gear 20b that transmits power from the engine 7 to a common drive shaft 20a for a pair of seedling planting mechanisms 17. The driven gear 20b is provided with a driven clutch pawl 20c, and a clutch body 20d configured to mesh with the driven clutch pawl 20c is engaged with the drive shaft 20a in the axial direction by spline fitting. The both seedling planting mechanism 17 is slidably provided so that the clutch body 20d is always meshed with the driven side clutch pawl 20c by the urging force of a spring 20e that is fitted on the drive shaft 20a. Further, the clutch body 20d is provided with an inclined cam surface 20f, and an operation pin 20g provided on the inclined cam surface 20f so as to be able to protrude and retract is provided. By contacting the ends, the clutch body 20d moves backward against the spring 20e so as to be disengaged from the driven clutch pawl 20c, and the both seedling planting mechanism 17 is configured to stop rotational driving. ing.

  In this case, the base end of the operation pin 20g is connected to one end of a bell crank type operation lever 20j pivotally attached to the tip of an arm 20h protruding upward from the transmission case 16 by a pin 20i. The operation pin 20g is urged in the direction away from the inclined cam surface 20f by the torsion spring 20k provided so as to be fitted on the pin 20i with respect to the bell crank lever 20j, and this position is maintained. It is configured to do.

  On the other hand, on the cover case 10 in the traveling machine body 2, clutch levers 21, 22, 23 for the pair of seedling planting mechanisms 17 in each of the seedling planting units 13, 14, 15 are provided on the left and right sides of the control seat 8. It is provided separately.

  That is, on the right side of the control seat 8, the clutch lever 21 for the pair of seedling planting mechanisms 17 in the first seedling planting unit 13 located on the rightmost outer side in the traveling direction among the seedling planting units 13, 14, 15. And the clutch lever 22 with respect to a pair of seedling planting mechanism 17 in the 2nd seedling planting unit 14 located inside with respect to the traveling direction among the seedling planting units 13, 14, 15 is arranged side by side in the lateral direction.

  On the other hand, on the left side of the control seat 8, a clutch lever 23 for the pair of seedling planting mechanisms 17 in the third seedling planting unit 15 located on the outermost left side in the traveling direction among the seedling planting units 13, 14, 15 is provided. Arrange.

  In this case, the clutch lever 21 for the pair of seedling planting mechanisms 17 in the first seedling planting unit 13 is positioned outside, and the clutch lever 22 for the pair of seedling planting mechanisms 17 in the second seedling planting unit 14 is positioned inside. ing.

  In addition to arranging the three seedling planting units 13, 14, 15 in the riding type rice transplanter 1, a fourth seedling planting unit configured in the same manner as each of these seedling planting units is arranged side by side. Thus, in the case where a total of eight rows is configured, the right side of the control seat 8 is to the pair of seedling planting mechanisms 17 in the first seedling planting unit and the second seedling planting unit counting from the right in the traveling direction. The clutch lever for the pair of seedling planting mechanisms 17 in the first seedling planting unit is positioned far from the control seat 8 and the clutch lever for the pair of seedling planting mechanisms 17 in the second seedling planting unit is positioned near the control seat 8. A pair of seedlings planted in the third seedling planting unit and the fourth seedling planting unit on the left side of the control seat 8 on the left side of the control seat 8 from the right in the traveling direction. The clutch lever for the structure 17, the clutch lever for the pair of seedling planting mechanisms 17 in the fourth seedling planting unit are located farther than the control seat 8, and the clutch lever for the pair of seedling planting mechanisms 17 in the third seedling planting unit is provided on the control seat 8. Located near the site.

  That is, the clutch levers for the pair of seedling planting mechanisms in the seedling unit positioned on the right side of the traveling direction among the seedling units are positioned on the right side of the control seat. The clutch levers for the pair of seedling planting mechanisms in the seedling unit located on the left side of the traveling direction among the seedling planting units are arranged on the left and right sides of the control seat 8 so as to be positioned on the left side of the control seat. Furthermore, a clutch lever for a pair of seedling planting mechanisms in a seedling planting unit located on the outer side in the traveling direction among the seedling planting units is located farther from the control seat and on the inner side than the outer seedling planting unit. The clutch lever for the pair of seedling planting mechanisms in the seedling planting unit is positioned so as to be positioned near the control seat. To.

  A gate frame in which the clutch lever 21 for the pair of seedling planting mechanisms 17 in the first seedling planting unit 13 and the clutch lever 22 for the pair of seedling planting mechanisms 17 in the second seedling planting unit 14 are provided in the cover case 10. 24, both the left and right side surfaces of the bracket 25 projecting from the bracket 24 are pivotally pivotally supported by pins 26 and 27 so that the clutch levers 21 and 22 pivot in the front-rear direction. The clutch lever 23 is pivotally attached to the right side surface of the bracket 28 protruding from the portal frame 24 by a pin 29 so that the clutch lever 23 rotates in the front-rear direction.

  In addition, when comprised by 8 row planting, it comprises so that the clutch lever with respect to a 4th seedling planting unit may be pivotally attached to the left side surface in the said bracket 28. FIG. That is, two clutch levers are attached to the left and right side surfaces of the one bracket 25, 28.

  Between the pin 21a fixed to the lower end portion of the clutch lever 21 for the first seedling planting unit 13 and the lower end of the operation lever 20j of the stapling clutch mechanism 20 in the first seedling planting unit 13, the second seedling unit 14 Between the pin 22a fixed to the lower end portion of the clutch lever 22 and the lower end of the operation lever 20j of the stapling clutch mechanism 20 in the second seedling unit 14, and the lower end portion of the clutch lever 23 with respect to the third seedling unit 15 By connecting each of the pin 23a fixed to the lower end of the operation lever 20j of the latching clutch mechanism 20 in the third seedling planting unit 15 via remote operation wires 30, 31, 32, When the clutch levers 21, 22, and 23 are rotated until they contact the front stopper (not shown) in the forward direction, When the stapling clutch mechanism 20 in each seedling planting unit 13, 14, 15 is engaged, and each clutch lever 21, 22, 23 is rotated until it contacts the rear stopper (not shown) in the rear direction, The stapling clutch mechanism 20 in each of the seedling planting units 13, 14, 15 is configured to be engaged with a clutch.

  That is, by rotating any one of the clutch levers 21, 22, and 23 to the rear side, the both seedling planting mechanisms 17 in the seedling planting unit corresponding to the clutch lever can be stopped simultaneously. From this, it is possible to freely change from 6-row planting to 4-row planting or 2-row planting.

  In this case, when the clutch levers 21, 22, 23 are rotated forward, the spring force of the torsion spring 20 k of the stapling clutch mechanism 20 in the seedling planting units 13, 14, 15 is pin 26. , 27 and 29, the clutch levers 21 and 22 are in contact with the front stopper, that is, held in the forward rotation position (position for driving the seedling planting mechanism). , 23 is rotated backward, the spring force by the torsion spring 20k is in contact with the rear stopper by exceeding the fulcrum so that it acts above the pins 26, 27, 29. That is, it is configured so as to be held in the backward rotation position (position where the seedling planting mechanism is stopped).

  A buffer tension spring 33 is provided at a connecting portion between the wires 30, 31, 32 and the operating lever 20j in the strut clutch mechanism 20.

  When the clutch levers 21, 22, and 23 are bent in a square shape when viewed from the side, the clutch levers 21, 22, and 23 are rotated to the forward rotation position (position for driving the seedling planting mechanism). The grip portion at the upper end protrudes from the front surface of the cover case 10, and when this is rotated to the rear rotation position (the position where the seedling planting mechanism is stopped), the grip portion of the cover case 10 In such a manner that the upper surface of the work floor 11 slightly protrudes from the work floor surface 11 so that the work floor surface 11 is substantially parallel to or close to the work floor surface 11 so as to fall substantially horizontally or close to the rear. It is composed.

  With this configuration, when the clutch levers 21, 22, and 23 are rotated to the front rotation position (position for driving the seedling planting mechanism), the grip portion at the upper end thereof is the cover case. 10 is projected from the front, but when this is rotated to the rear rotation position (the position at which the seedling planting mechanism is stopped), the grip portion is substantially horizontal or rearward. Therefore, any clutch lever among the clutch levers 21, 22, and 23 is in a position for driving the seedling planting mechanism, or the seedling planting mechanism is stopped. Whether the position is present can be easily and accurately identified at a glance.

  With the clutch levers 21, 22, and 23 being rotated to the rearward rotation position (the position at which the seedling planting mechanism is stopped), the grip portion is slightly more than the work floor surface 11 on the upper surface of the cover case 10. The clutch levers 21, 22, and 23 are engaged in various operations such as seedling on the work floor 10 by being substantially parallel to or close to the work floor 11 in a protruding state. Can be reliably reduced.

  By the way, the seedling stage 18 in each of the seedling planting units 13, 14, 15 is provided with a vertical feeding mechanism for the seedling mat placed thereon, and this vertical feeding mechanism drives the both seedling planting mechanisms 17. At the same time, the longitudinal feed is stopped by the clutch mechanism.

  Therefore, each of the seedling planting units 13, 14, 23, 23, 23 a corresponding to each of the clutch levers 21, 22, 23 is attached to each of the pins 21 a, 22 a, 23 a fixed to the lower ends of the clutch levers 21, 22, 23. 15 by connecting the operation wires 34, 35, 36 for remotely operating the longitudinal feed mechanism crack mechanism in any one of the clutch levers 21, 22, 23. By operation, both the seedling planting mechanism 17 in the seedling planting units 13, 14, and 15 corresponding to the clutch lever are simultaneously stopped, and the vertical feed mechanism in the seedling mounting stage 18 of the stopped seedling planting mechanism 17 is simultaneously stopped. be able to.

  Further, depending on the riding type rice transplanter, as described above, the fertilizer spraying device 12 may be provided for the seedling planting strip by each seedling planting mechanism 17.

  As is well known in the art, the fertilizer spraying device 12 is configured to stop fertilizer spraying for the seedling planting strips by the seedling planting mechanism that is stopped among the seedling planting mechanisms 17. Yes.

  Therefore, in this fertilizer application device 12, operation wires 37, 38, 39 for operating a mechanism for stopping the application of fertilizer to each seedling planting strip are fixed to the lower ends of the clutch levers 21, 22, 23. By connecting to each of the pins 21a, 22a, and 23a, the seedling planting unit 13 corresponding to the clutch lever can be operated by rotating the clutch levers 21, 22, and 23 to the rear in any clutch lever. 14 and 15, the suspension of both seedling planting mechanisms 17, the suspension of the vertical feed mechanism in the seedling mounting stage 18 of the halted seedling planting mechanism 17, and the suspension of fertilizer application to the seedling planting strips by the halted seedling planting mechanism 17 The three parties can be performed simultaneously.

  In the above-described illustrated embodiment, a pair of seedling planting mechanisms is provided in one seedling planting unit, and a streak clutch mechanism is provided for each pair of seedling planting mechanisms. Needless to say, the present invention is not limited to this, and can be applied to the case where a streak clutch mechanism is provided for each seedling planting mechanism.

It is a side view of a riding type rice transplanter. It is a top view of a riding type rice transplanter. It is an enlarged view which shows the principal part of FIG. It is an enlarged view which shows the further principal part of FIG. FIG. 5 is a side view taken along line VV in FIG. 3. FIG. 5 is a perspective view of FIG. 4. It is a figure which shows the part of a seedling planting mechanism. It is VIII-VIII sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rice transplanter 2 Driving body 3, 4 Wheel 5 Farm scene 6 Seedling planting device 8 Control seat 10 Cover case 11 Work floor 13, 14, 15 Seedling planting unit 17 Seedling planting mechanism 18 Seedling stand 19 Float 20 Strut stop clutch mechanism 20k torsion spring (spring means)
21, 22, 23 Clutch lever 30, 31, 32 Operation wire

Claims (3)

A plurality of seedling planting mechanisms for planting seedlings in the field are arranged in a horizontal direction, and a suspension clutch that intermittently operates the seedling planting mechanism or a pair of seedling planting mechanisms. While the mechanism is provided, the seedling planting mechanism is driven when the clutch lever for each of the above-mentioned strut-stopping clutch mechanisms is rotated forward in the vicinity of the control seat on which the operator is boarded, and when it is rotated backward. In the riding type rice transplanter configured to stop the seedling planting mechanism,
Each said clutch lever is comprised so that it may fall in the state which is substantially horizontal or close | similar toward back when the said clutch lever is rotated back, The seedling planting in the riding type rice transplanter characterized by the above-mentioned Variable number of devices.   2. The clutch lever according to claim 1, wherein the clutch levers are substantially parallel to or close to a work floor provided near the control seat when the clutch levers are rotated backward. A device for varying the number of seedlings planted in a riding type rice transplanter, characterized in that it is configured as described above.   In the first or second aspect of the invention, each of the strut-stopping clutch mechanisms is provided with a spring means for holding it in power transmission, while each of the clutch levers has a posture when rotated forward. The number of seedling planting lines in the riding type rice transplanter, characterized in that the spring means is held so that the posture when it is rotated rearward is held beyond the fulcrum in the spring means. Variable device.

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