JP4532763B2 - Passenger rice transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a riding rice transplanter in which a seedling planting apparatus connected to a rear portion of a traveling machine body is provided with a plurality of hooking clutches for stopping a part of the entire planting mechanism.
[0002]
[Prior art]
The saddle clutch is mainly used when planting a small number of strips in the previous planting process so that the final planting process along the coast is planted in all strips. In the planting process performed after the planting process is completed, it is necessary to return all the saddle clutches that have been previously cut off to the engaged state.
[0003]
In this case, there is a possibility that the inserted back-and-forth clutch is forgotten. In order to avoid such a problem, for example, a means as disclosed in Japanese Patent Laid-Open No. 3-23043 is proposed. Has been. In this proposed structure, a contact member that reciprocates in conjunction with the raising and lowering of the seedling planting device is provided, and the hooked clutch lever that is in the cut state is forced by the contact member that moves in conjunction with the raising of the seedling planting device. While means for moving the contact and return to the entrance position is adopted, and the contact member is configured to be elastically retractable, while the seedling planting device is in the raised state, the contact member is elastically retracted It is configured to be able to operate the closing clutch lever.
[0004]
In other words, when the saddle clutch is cut for minority planting, the entire planting state appears in conjunction with the raising of the seedling planting device when the aircraft turns at the end of the minority planting process. When changing the aircraft direction at the end of the full-row planting process before a small number of plants are planted, it is possible to disengage the desired heel clutch even when the seedling planting device is raised.
[0005]
[0006]
[Problems to be solved by the invention]
According to the structure of JP-A 3-23043 Patent Gazette, when operating the clutch lever when ridges in a state of raising the seedling planting apparatus, ridges when the abutment member in a clutch engaging operation position when rib is elastically reverse clutch The spring that elastically biases the contact member is given an initial elastic force that overcomes the operating resistance of the cut-off state clutch, and is further elastically deformed. For this purpose, a considerably large force is required, and the operation of closing the hook clutch becomes heavy with the seedling planting device raised.
[0007]
The purpose of the present invention is to so lightly perform the cutting operation of the clutch when ridge in a state of raising the seedling planting apparatus.
[0008]
[0009]
[0010]
[Means for Solving the Problems]
[Configuration, operation and effect of the invention according to claim 1]
[0011]
(Structure) The invention according to claim 1 is equipped with a seedling planting device that is connected to the rear part of the traveling machine body so as to be able to move up and down, and is equipped with a plurality of hook clutches that pause a part of the entire planting mechanism. In rice transplanter,
An automatic hooking clutch return mechanism in which each hooking clutch is configured to be able to be independently turned on and off by a hooking clutch lever, and the hooking clutch that has been cut off is turned on and off in conjunction with the raising operation of the seedling planting device. With
The clutch automatic return mechanism when said ridge, a clutch force return operation member which is linked to the seedling planting apparatus to reciprocate in conjunction with the lifting operation of the seedling planting apparatus, provided on the clutch levers when the ridge An engagement portion , and the clutch forcible return operation member is configured to swing around the linking point to the seedling planting device side to avoid engagement with the engagement portion,
When the seedling planting device is lifted while the saddle clutch lever is in the clutch disengaged position, the clutch forced return operation member is engaged with the engaging portion by the forward movement accompanying the lifting operation of the seedling planting device. It is configured to forcibly move the closing clutch lever to the clutch engagement position by acting together,
In a state where the seedling planting apparatus is increased, the clutch forced return operation member and the ridge when the clutch lever is in contact with the clutch forced return operation member to move from clutch engaging position in clutch disengaging position to the seedling planting apparatus The swinging operation is performed using the linkage location as a fulcrum and retracted with respect to the engagement portion, and the engagement of the clutch forcible return operation member and the engagement portion is avoided to move the clutch ketch lever to the clutch disengagement position. It is configured to allow switching .
[0012]
(Effect) According to the above configuration, when the minority planting process is finished with the hook clutch disengaged, the seedling planting device is raised to change the direction of the aircraft, and to move to the planting process with all the lines along the bush. made, but by raising the seedling planting apparatus, the forward in a state where the clutch forced return operation member of the clutch automatic return mechanism when ridges were engaged acts on the engaging portion provided on the clutch levers when ridges in the clutch disengaging state As a result, the closing clutch lever is forcibly returned to the clutch-engaged position, and the full-row planting state appears without any special operation.
[0013]
Also, when changing the aircraft direction during the transition from the full-row planting process to the minority planting process, with the seedling planting device raised, the desired saddle clutch lever is turned off to operate the next minor planting process. When preparing, when the saddle clutch lever is turned off, the clutch forced return operation member that has moved to the forward end as the seedling planting device is lifted is retracted in a direction different from the reciprocating direction. It will be. Here, by adopting a waist folding structure or the like in the structure in which the clutch forced return operation member is retracted in a direction different from the reciprocating direction, the clutch forced return operation member can be lightly retracted and the clutch clutch lever is turned off. Most of the operating force to be operated becomes the operating resistance of the closing clutch itself, and the closing clutch can be operated relatively lightly.
[0014]
(Effect) Therefore, according to the invention according to claim 1, no special operation for returning to the full-row planting state is required at the time of changing the aircraft direction during the transition from the minor row planting process to the full-row planting process. It is possible to eliminate forgetting to return to the strip planting state, and it is possible to quickly and easily perform the operation of closing the clutch lever when changing the aircraft direction during the transition from the full strip planting process to the minority planting process. Became.
[0015]
[0016]
[0017]
[0018]
[0019]
[0020]
[0021]
[0022]
[0023]
[0024]
[0025]
[0026]
[0027]
[0028]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a side view of a rice transplanter with a fertilizer applicator configured in an eight-row planting specification, and FIG. 2 shows a rear plane of the rice transplanter. In this rice transplanter with a fertilizer application, a seedling planting device 4 having an eight-row planting specification is hydraulically mounted on the rear part of a traveling machine body 3 that has a front wheel 1 that can be steered and a rear wheel 2 that cannot be steered and travels by four-wheel drive. It has a basic structure in which it is connected so as to be able to be lifted and lowered via a lifting link mechanism 6 having a parallel quadruple link structure driven by a cylinder 5, and a fertilizer 7 is provided at the rear of the machine body.
[0029]
An engine 8 is mounted on the front portion of the traveling machine body 3, and its output is transmitted to a hydrostatic continuously variable transmission (HST) 9 which is a main transmission capable of switching between forward and backward travel, and the transmission output is transmitted to the mission. After being input to the case 10 and further gear-shifted by an auxiliary transmission (not shown), it is transmitted to the front wheels 1 and the rear wheels 2, and the main operating the hydrostatic continuously variable transmission 9. A shift lever 11 is provided on the left side of the steering handle 12 of the boarding driving section so as to be able to swing back and forth, and an auxiliary transmission lever 13 for operating the auxiliary transmission device in the mission case 10 is a driver seat 14 of the boarding driving section. It is deployed on the left side. Note that a stop pedal 15 is provided at the right forefoot of the boarding operation section to disengage the main clutch in the mission case 10 by depressing and stop the body by braking the brake provided in the traveling system.
[0030]
The seedling planting device 4 has a seedling bed 21 on which a seedling W is placed and reciprocally moves laterally at a fixed stroke, and eight sets of rotations for cutting out and planting seedlings one by one from the lower end of the seedling bed 21. The planting mechanism 22 and five leveling floats 23, 23s for leveling the planned planting area of the field are equipped in parallel, and the planting mechanism 22 is cantilevered in a horizontally long planting part frame 24. Two sets of four planting cases 25 supported in parallel are mounted on the left and right sides of the rear part.
[0031]
In addition, for the case of planting with fewer than all the strips (eight strips) near the edge, power transmission to the planting mechanism 22 mounted on the left and right is intermittently provided at the rear of each planting case 25. There are two longitudinal feed clutches 28 that are provided with the edge clutch 26 and that stop the seedling feeding operation of the belt-type seedling vertical feeding device 27 provided for each row of the seedling bed 21 in accordance with the planting suspension stripes. It is provided in units.
[0032]
The seedling planting device 4 can be raised and lowered automatically in addition to being raised and lowered artificially. That is, as shown in the block diagram of FIG. 14, an elevating lever 31 is provided on the right side of the driver's seat 14, the operation position is detected by the potentiometer 32, and the center leveling float 23s as the sensor float is vertically The swing displacement is detected by a potentiometer 33, and an electromagnetic control valve 34 that controls the operation of the potentiometers 32 and 33 and the hydraulic cylinder 5 is connected to a control device 35.
[0033]
The mission case 10 is provided with a planting clutch 36 for intermittently driving power to the seedling planting device 4, and an electric motor 37 for turning on and off the planting clutch 36 is connected to the control device 35. A neutral return type priority elevating lever 38 is mounted on the right side of the steering handle 12 so as to be able to swing up and down, and a switch device 39 for detecting the up / down operation is connected to the control device 35. Furthermore, a potentiometer 40 is connected to the control device 35 to detect the operation position of the main transmission lever 11.
[0034]
The raising / lowering lever 31 can select operation positions of “up”, “neutral”, “down”, “planting”, and “automatic”, and the following operations are performed at each operation position.
[0035]
“Raising”: The control valve 34 is switched to the raising position, the hydraulic cylinder 5 is driven to be shortened, and the seedling planting device 4 is raised.
[0036]
“Neutral”: The control valve 34 is switched to the neutral position and the elevation is stopped.
[0037]
"Descent": It is an elevation control mode in which the seedling planting device 4 is automatically raised and lowered based on the vertical displacement of the sensor float 23s, and when the seedling planting device 4 is switched from the state of rising from the field scene to the "down" position, First, the hanging of the sensor float 23s is detected by the potentiometer 33, the control valve 34 is switched to the lowered position, and the seedling planting device 4 is lowered. When the seedling planting device 4 reaches the field scene and the sensor float 23s reaches a predetermined ground pressure, the control valve 34 is switched to the neutral position and the descent stops. Thereafter, when the sensor float 23s is displaced upward based on the increase of the ground pressure, it is controlled to rise, and when the sensor float 23s is displaced downward based on the decrease of the ground pressure, it is controlled to descend so as to maintain the predetermined ground pressure. Is done. However, in this “down” position, the planting clutch 36 is maintained in the disengaged state, and only the automatic raising / lowering of the seedling planting device 4 is performed.
[0038]
“Planting”: The seedling planting device 4 is automatically raised and lowered in the same manner as the “down” position, and the planting clutch 36 is operated through the electric motor 37. Is done.
[0039]
“Automatic”: The automatic raising / lowering control function of the seedling planting device 4 based on the sensor float 23s similar to the above “planting” position is provided, and arbitrary raising / lowering control (priority raising / lowering control) by the priority raising / lowering lever 38 and main shift Automatic raising control (backup control) of the seedling planting device 4 based on switching to the reverse position of the lever 11 is executed as follows.
[0040]
(Priority raising / lowering control): When planting traveling is performed in a state where the planting device 4 is controlled to be raised and lowered so as to maintain a predetermined ground pressure, the priority raising / lowering lever 38 is raised and a one-shot operation is performed to the “U” position. Thus, the seedling planting device 4 is controlled to rise up to the upper limit, and the planting clutch 36 is controlled to be turned off. When the aircraft direction change at the end of the wing is completed, the priority lift lever 38 is lowered and the one-shot operation to the “D” position is performed once to return to the original automatic lift control mode, and the seedling planting device 4 is lowered until it contacts the ground. Be controlled. However, the planting clutch 36 is maintained in the disengaged state during this lowering. When the direction change and adjustment for the next stroke are completed, the priority raising / lowering lever 38 is lowered again and the one-shot operation is performed to the “D” position, and the planting clutch 36 is engaged and controlled to resume planting. be able to.
[0041]
(Backup control): If the main speed change lever 11 is switched to the reverse while the planting device 4 is in a descending state due to dredging or the like, this is detected, and the planting device 4 is automatically raised to the upper limit. At this time, if the planting clutch 36 is included, it is controlled to be turned off together with the lifting operation, and the rear portion of the planting device 4 is prevented from colliding with a basket or the like due to the backward movement.
[0042]
The fertilizer application device 7 is mounted on the self-propelled aircraft 3 between the planting operation seat 14 and the seedling planting device 4, and feeds the fertilizer in the fertilizer hopper 41 for storing powdery fertilizer and the fertilizer in the fertilizer hopper 41. Blower 45 that feeds the fed fertilizer by air to the grooving device 44 provided in the leveling float 23 of the seedling planting device 4 through the supply hose 43, the electric motor 46 that drives this, and the delivery wind distribution The horizontally long blast pipe 47 is provided.
[0043]
As shown in FIG. 4, the feeding mechanism 42 is unitized every two strips, and four sets of feeding mechanisms 42 are arranged in parallel to feed eight strips. The feeding mechanism 42 itself is configured to rotate the two feeding rolls 52 provided in the feeding case 51 in a certain direction to feed the fertilizer in the fertilizer hopper 41 by a set amount and guide it to the air path of the blower pipe 47. Has been.
[0044]
As shown in FIGS. 6 and 7, a feed drive shaft 61 common to all the strips is laid across the feed mechanism 42, and the feed drive shaft 61 and the center roll shaft 62 of each feed roll 52 are gear-linked. At the same time, the pay-out drive shaft 61 itself is linked to a traveling system transmission shaft 17 that transmits power from the transmission case 10 to the rear transmission case 16 that pivotally supports the rear wheel 2, and is fed at a speed synchronized with the traveling speed. 42 is driven out.
[0045]
That is, as shown in FIG. 4, a power take-out case 65 is provided at the rear portion of the traveling system transmission shaft 17, and an output shaft 66 interlocked with the traveling system transmission shaft 17 with a bevel gear is installed in the power take-out case 65 sideways. ing. A crank arm 67 provided at the end of the output shaft 66 and a passive arm 68 provided in the feeding mechanism 42 are interlocked and connected via a push-pull rod 69, and the passive arm 68 reciprocates as the crank arm 67 rotates. The reciprocating swing is transmitted to the feed drive shaft 61 via two sets of one-way clutches whose transmission direction sections are opposite to each other, and the feed drive shaft 61 is pulsatically rotated in a certain direction. ing.
[0046]
The power take-out case 65 is provided with a fertilizer clutch 70 for intermittently taking out power from the output shaft 66. The fertilizer clutch 70 is mechanically coupled to an electric motor 37 for controlling the on / off of the planting clutch 36. The on / off of the planting clutch 36 and the on / off of the fertilization clutch 70 are synchronized.
[0047]
Further, on each side of each feeding mechanism 42, when the small number of strips are planted by cutting the edge clutch 26 of the seedling planting device 4, every two strips are suspended in order to pause the fertilization corresponding to the planting suspension strips. Further, a feeding clutch 71 capable of stopping the feeding operation is provided. As shown in FIGS. 8 and 9, the feeding clutch 71 is configured as a pawl clutch that meshes a clutch piece 72 that is shiftably mounted on the feeding drive shaft 61 with a driving gear 63 for driving the feeding roll. The clutch piece 72 is slidably biased by a spring 73 in the clutch engagement direction. A clutch arm 74 for shifting the clutch piece 72 is provided so as to swing around the fulcrum a.
[0048]
When planting a small number of strips before planting all the strips along the cocoon, the cocoon clutch 26 and the longitudinal feed clutch 28 of the seedling planting device 4 and the feeding clutch 71 of the fertilizer applicator 7 are linked and operated. Four saddle clutch levers 80 are provided on a support frame 81 provided in each feeding mechanism 42. As shown in FIG. 2, these saddle clutch levers 80 are arranged on the left and right sides of the rear portion of the driver seat 14, with two on the left and right sides, and the driver sits on the driver seat 14 and slightly twists his body. The saddle clutch lever 80 can be easily operated.
[0049]
The saddle clutch lever 80 and the clutches 26, 28, 71 are linked as follows. That is, as shown in FIG. 8, the rightmost side clutch lever 80 (1) is mounted on the left side of the support frame 81, and the operation wire for operating the rightmost side clutch 26 and the longitudinal feed clutch 28 in conjunction with each other. The front end of the outer wire 82a in 82 is connected to the clutch arm 74 of the rightmost delivery clutch 71, and the front end of the inner wire 82b in the operation wire 82 is connected to the rightmost flange clutch lever 80 (1). Therefore, when the saddle clutch lever 80 (1) is lifted and swung, the inner wire 82b is pulled forward to cut off the saddle clutch 26 and the longitudinal feed clutch 28, and the front end of the outer wire 82 is relatively forward. As a result, the clutch arm 74 is swung and the rightmost delivery clutch 71 is disengaged.
[0050]
Further, the second lever clutch lever 80 (2) from the right is mounted on the right side of the support frame 81, and the lever main body swings integrally with the lever clutch lever 80 (2) via the support shaft 83. 84 is mounted on the left side of the support frame 81, and the lever main body 84 and each clutch group are wire-linked in the same manner as described above.
[0051]
The third clutch lever 80 (3) from the right (second from the left) is wire-coupled to each clutch group with exactly the same specifications as the right clutch clutch lever 80 (1).
[0052]
Further, the fourth (leftmost) outermost clutch lever 80 (4) from the right is mounted on the right side of the support frame 81, and an intermediate arm 85 wire-coupled to each clutch group in the same manner as described above is connected to the rod 86. Via the clutch arm 74 of the leftmost feeding clutch 71.
[0053]
As shown in FIGS. 10 to 13, the saddle clutch lever 80 is pivotally connected to the support frame 81 so as to be swingable up and down around the lateral fulcrum b, and the clutch is positioned slightly beyond the dead point DP. The clutch “engaged” position is set at a position where the “cut” position is far beyond the dead point DP, and the base portion of the saddle clutch lever 80 is received and supported by a stopper pin 83 provided on the support frame 81. Thus, it can be held at each operation position.
[0054]
Behind each heel clutch lever 80, a heel clutch automatic return mechanism 90 is arranged to return the heel clutch clutch 80, which has been cut off, in conjunction with the raising operation of the seedling planting device 4, The structure will be described below.
[0055]
An operation lever 91 that can swing up and down around the fulcrum c is provided behind the saddle clutch lever 80, and a linkage rod 92 that extends downward from the free end of the operation lever 91 is provided in the lift link mechanism 6. Is inserted into a rotating boss 93 provided in the upper link 6a. A stopper pin 94 is provided at an intermediate portion of the linkage rod 92, and the rotating boss 93 is in a lowered state without contacting the stopper pin 94 while the elevating link mechanism 6 is raised and lowered at the planting work level. Although the slide rod is moved up and down with respect to the linkage rod 92, when the raising and lowering link mechanism 6 is raised to the upper limit, the rotating boss 93 that moves upward contacts the stopper pin 94, the linkage rod 92 is pushed up, and the operation lever 91 is moved upward. It is swung.
[0056]
The fulcrum shaft 95 to which the operation lever 91 is fixed is provided with four operation arms 96 that can swing together with the operation lever 91, and the operation as a forced return operation member from the free end of each operation arm 96 to the front. A rod 97 is extended. The operating rod 97 is supported so as to be able to swing up and down with respect to the operating arm 96 and is engaged with the guide member 99 so as not to move in the lateral direction. (And near the base of the lever main body 84).
[0057]
On the other hand, a projecting piece 98 as an engaging portion that faces the front end of the operating rod 97 is provided on each of the closing clutch levers 80 (and the lever main body 84). When the lifting link mechanism 6 operating rod 97 descends is retracted rearward, the clutch lever 80 when ridge is in the clutch disengaging position, by protrusion 98 face the front end of the operating rod 97 urchin It has become. Accordingly, when the seedling planting device 4 is raised to the upper limit while the closing clutch lever 80 is in the clutch “disengaged” position, the operating rod 97 moves forward as the elevating link mechanism 6 rises, and the protruding piece 98. When the operating rod 97 is moved forward while being engaged from the rear, the closing clutch lever 80 is swung forward until it exceeds the dead point DP, and is swung to the clutch “entered” position. become.
[0058]
That is, when one of the hook clutch levers 80 is clutch-disengaged to plant a small number of strips and the seedling planting device 4 is raised to change the direction of the body at the end of the field, the hook in the clutch “disconnect” position the clutch lever 80 when it is forced to automatic return operation to the clutch "oN Ri" position, it has become to be returned to full Article planting conditions.
[0059]
When the edge clutch lever 80 is moved from the clutch “ON” position to the clutch “OFF” position while the seedling planting device 4 is raised to the upper limit, the upper surface of the base of the edge clutch lever 80 is moved as shown in FIG. Comes into contact with a bent portion 97a formed on the operating rod 97 from below, and the operating rod 97 swings and retreats upward with the rear end thereof as the swinging clutch lever 80 swings upward. 80 until clutch "switching operation" position can be held in operation.
[0060]
Therefore, the cutting operation of the hook clutch lever 80 can be arbitrarily performed even when the seedling planting device is lifted at the time of changing the aircraft direction when the whole row planting step is completed and the next minority row planting step is performed.
[0061]
[0062]
[0063]
[0064]
[0065]
[0066]
[0067]
[0068]
[0069]
[0070]
[0071]
[0072]
[0073]
[0074]
[0075]
[0076]
[0077]
[0078]
In addition, this invention can also be implemented with the form deform | transformed as follows.
In the implementation form shown in FIGS. 10 to 13 makes use of the operating rod 97 of the clutch lever 80 when ridge as a forced return operation member for moving compulsorily returned to clutch engaging position, but buckling freely oscillating Ru can also use the link.
[Brief description of the drawings]
[Fig. 1] Overall side view of a riding type rice transplanter [Fig. 2] Plan view of the rear of the rice transplanter [Fig. 3] Plan view showing the coasting clutch operating system [Fig. 4] Rear view of the fertilizer device [Fig. 5] Fertilizer device Front view [Fig. 6] Side view of fertilizer application device [Fig. 7] Longitudinal side view showing feeding mechanism in fertilizer application device [Fig. 8] Plan view of hook clutch operating unit [Fig. 9] Plan view of feeding clutch operation unit [ FIG. 10 is a side view showing the saddle clutch lever operating portion in the clutch disengaged state. FIG. 11 is a side view showing the saddle clutch lever operating portion while the seedling planting device is being lifted. FIG. FIG. 13 is a side view showing the saddle clutch lever operating part in the state. FIG. 13 is a side view showing the saddle clutch lever operating part in the middle of the clutch disengagement operation when the seedling planting device is raised. FIG. 14 is a control block diagram. Explanation】
3 traveling machine body 4 seedling planting device 22 planting mechanism 26 edge clutch 36 planting clutch 38 operation lever (priority raising / lowering lever)
80 Coupling clutch lever 90 Coupling clutch automatic return mechanism 97 Forced return operation member (control rod)
98 Engagement part (projection piece )

Claims (1)

In the riding rice transplanter equipped with a plurality of hook clutches that pause a part of the entire planting mechanism to the seedling planting device connected to the rear part of the traveling machine body so as to be movable up and down,
An automatic hooking clutch return mechanism in which each hooking clutch is configured to be able to be independently turned on and off by a hooking clutch lever, and the hooking clutch that has been cut off is turned on and off in conjunction with the raising operation of the seedling planting device. With
The clutch automatic return mechanism when said ridge, a clutch force return operation member which is linked to the seedling planting apparatus to reciprocate in conjunction with the lifting operation of the seedling planting apparatus, provided on the clutch levers when the ridge An engagement portion , and the clutch forcible return operation member is configured to swing around the linking point to the seedling planting device side to avoid engagement with the engagement portion,
When the seedling planting device is lifted while the saddle clutch lever is in the clutch disengaged position, the clutch forced return operation member is engaged with the engaging portion by the forward movement accompanying the lifting operation of the seedling planting device. It is configured to forcibly move the closing clutch lever to the clutch engagement position by acting together,
In a state where the seedling planting apparatus is increased, the clutch forced return operation member and the ridge when the clutch lever is in contact with the clutch forced return operation member to move from clutch engaging position in clutch disengaging position to the seedling planting apparatus The swinging operation is performed using the linkage location as a fulcrum and retracted with respect to the engagement portion, and the engagement of the clutch forcible return operation member and the engagement portion is avoided to move the clutch ketch lever to the clutch disengagement position. A riding rice transplanter configured to allow switching .

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