JP4741389B2 - Work machine operation structure - Google Patents

Description

  The present invention relates to an operating structure for a work machine having an operating structure for turning on and off a small number of clutches.

Some rice transplanters as work machines include a plurality of small number of clutches that can be operated and stopped by a small number of planting arms. Operation structure as referred to in the following has been provided for the minority row clutch.
A small number of clutches including a cam body that drives a small number of clutches on and off, a clutch operating arm that is driven to swing following the cam surface of the cam body, and a clutch wire that links the clutch operating arm and each of the small number of clutches. And a push button switch for issuing an operation command for turning on and off each minority clutch on the control panel (Patent Document 1).

JP 2000-139135 A (paragraph numbers [0032] [0048] and FIGS. 2 and 10)

In the above configuration, the on / off operation of the small number of clutches is performed by turning on / off the push button switch, but even when the push button switch is switched to the on / off operation position, It was difficult to visually distinguish the switching state.
Moreover, although the structure which notifies a switching state with a lamp | ramp etc. is taken, there existed a surface which was difficult to discriminate | determine under the influence of a sunlight ray at the time of a daytime work.

  An object of the present invention is to provide an operating structure for a work machine that can easily determine the on / off operation position of a clutch operating tool by visual observation and can improve operability.

The characteristic configuration of the invention according to claim 1 is:
Equipped with a seedling planting device equipped with a seedling planting mechanism for multiple strips on a traveling machine body through a link mechanism,
A plurality of minority clutches that intermittently transmit power to the seedling planting mechanism, and an electric actuator that operates each minority clutch on and off,
A control means for controlling the electric actuator; and a plurality of operation units for inputting on / off signals for the electric actuator to the control means;
Each of the operation units is composed of an artificial operation tool that moves and displaces between an entry operation position and a cutting operation position, and detection means that detects the operation position of the artificial operation tool,
A plurality of the artificial operation tools arranged in a line in a direction orthogonal to the moving direction thereof, and each of the artificial operation tools is located in a cross-section channel type bracket equipped with the base. And a knob portion protruding from the bracket,
The detection means is disposed inside the bracket so that the base of the artificial operation tool is a detection target,
Based on the ascending operation of the seedling planting device with respect to the traveling machine body, an automatic return mechanism is provided for returning the artificial operation tool at the cutting operation position to the entry operation position,
The linkage mechanism having one end connected to the seedling planting device or the link mechanism is pulled in conjunction with the raising operation of the seedling planting device with respect to the traveling machine body, thereby positioning the cutting operation position. The automatic return mechanism is configured so that the base of the artificial operation tool is mechanically operated so that the artificial operation tool at the cutting operation position automatically returns to the entry operation position ,
Forming a hooking and locking portion at the base of each of the artificial operation tools,
The automatic return mechanism is provided with an interlocking frame that spans all of the plurality of hooking and locking portions,
Connecting the other end of the linkage mechanism to the linkage frame;
When the linkage mechanism is pulled in conjunction with the raising operation of the seedling planting device with respect to the traveling machine body, the hooking locking portion of the artificial operation tool located at the cutting operation position is moved by the interlocking frame. The interlocking frame is operably linked to each of the hooking and locking portions so that the artificial operation tool at the cutting operation position is automatically returned to the entry operation position by being pressed . The effects are as follows.

Minority Article clutch is operated switching on and off by an electric actuator. The electric actuator is controlled by the control means, and an on / off signal is input to the control means from the operation unit.
According to the first feature of the present invention, the artificial operation tool is located at the entry operation position by providing an artificial operation tool that moves and displaces between the entry operation position and the cutting operation position as constituting the operation unit. It is easy to visually determine whether or not it is in the cutting operation position.

Therefore, according to the first aspect of the present invention, the operation localization of artificial manipulation tool is now easily, thereby improving the operability of the switching operation.

When the planting process is completed and the aircraft reaches the heel, the seedling planting device is driven up and turned at the heel. When the turn at the end of the heel is finished, the seedling planting device is driven down to the paddy surface and the next planting process is started. Generally, when a desired small number of clutches are operated in a stopped state and one planting process is completed, in the next planting process, all the small number of clutches are operated to perform normal planting work. There are many cases.

According to the first feature of the present invention, when a desired small number of clutches are operated in a stopped state and one planting process is completed, when the seedling planting device is driven up, Since the artificial operation tool is operated to return through the linkage mechanism, all the minority clutches are operated to the operating state, and the desired minority clutch is operated to the stop state, and erroneously entered the next planting process. You can avoid entering.

According to the first feature of the present invention, the operability of the work machine can be improved.

The characteristic configuration of the invention according to claim 2 is the invention according to claim 1 ,
A spring for engaging and energizing the interlocking frame toward the hooking locking portion at the cutting operation position;
In conjunction with the ascending operation of the seedling planting device with respect to the traveling machine body, the interlocking frame deviates from the movement range of the hooking and engaging portion against the entry operation position side against the biasing force of the spring. Enabling the operation from the entry operation position of the artificial operation tool to the cutting operation position,
In conjunction with the lowering operation of the seedling planting device with respect to the traveling machine body, the interlocking frame is configured to be engaged with the hook locking portion at the cutting operation position by the biasing force of the spring. is there.
According to the second feature of the present invention, since the linkage between the artificial operating tool and the linkage mechanism can be released, even if all the minority clutches are once returned to the operating state before entering the next stroke. The desired small number of clutches can be operated in a stopped state, and unnecessary planting work can be prevented in advance.

The characteristic configuration of the invention according to claim 3 is the characteristic configuration of the invention according to claim 1 or 2 ,
Informing means for informing when a plurality of the artificial operation tools are operated in a state not corresponding to actual work is provided.

If some small number Article clutch is operated in a stopped state in the actual operation is limited to a few specific row clutch, and a small number row clutch also right or left end sequence which is operated in a stopped state Limited. Therefore, when only a minority clutch other than the specific minority clutch is operated (for example, as shown in FIGS. 4 and 26, the second minority clutch 19b from the right (artificial operation tool 68B)). Only in a stopped state), it is not suitable for actual work.
In such a case, since the operator is notified by the notification means, the operator can recognize that an operation that is not suitable for the actual work is performed, and the correction operation can be easily performed.

[1]
As shown in FIGS. 1 and 2, an engine 3 and a transmission case 4 are provided at the front of the aircraft supported by the front wheels 1 and the rear wheels 2, and a four-link type link mechanism 6 is hydraulically installed at the rear of the aircraft. It is connected by a cylinder 14 so as to be movable up and down, and a seedling planting device 7 is supported by the link mechanism 6 to constitute a riding type rice transplanter.

As shown in FIGS. 1 and 2, the seedling planting device 7 is configured in an eight-row planting type, and includes one feed case 15 (see FIG. 4), four planting cases 8, and planting cases 8. Rotating case 9 supported on the right and left sides of the rotating case 9, a pair of planting arms 10 provided at both ends of the rotating case 9, a grounding float 11, a seedling platform 12, and a seedling platform 12 A vertical feed mechanism 13 for feeding the seedlings to the lower part of the seedling platform 12 is provided.
Here, the rotating case 9, the pair of planting arms 10 and the like are collectively referred to as a seedling planting mechanism.

  As shown in FIGS. 3 and 4, a feed case 15 is connected to the lower part of the rear portion of the link mechanism 6 so as to be able to roll around the front and rear axis, and the power of the engine 3 is connected to the feed case 15 via the PTO shaft 18. Has been communicated. A lateral support frame 16 is connected to the feed case 15, and four planting cases 8 are connected to the support frame 16 in a cantilever manner so as to extend over the feed case 15 and the four planting cases 8. The transmission shaft 17 is connected.

As a result, as shown in FIG. 4, the power of the engine 3 causes the PTO shaft 18, the feed case 15, the transmission shaft 17, the planting case 8, and the transmission chain (not shown) disposed inside the planting case 8. The rotation case 9 is driven to rotate, and the planting arm 10 alternately takes out the seedlings from the lower part of the seedling bed 12 and plantes them on the rice field.

[2]
Next, the first, second, third and fourth minority clutches 19a, 19b, 19c and 19d will be described.
As shown in FIGS. 3 and 4, first to fourth minority clutches 19 a to 19 d are provided in order from the right planting case 8 on the support portion of the rotating case 9 in the planting case 8. The first to fourth minority clutches 19a to 19d are used for operating and stopping the two rotating cases 9 by transmitting and cutting power to the two rotating cases 9 in one planting case 8. (Not shown) is urged to the operating state.

  Accordingly, as shown in FIGS. 3 and 4, for example, when the first small number of clutches 19a are operated in a stopped state, the two rotating cases 9 of the rightmost planting case 8 are stopped. When the first to fourth minority clutches 19a to 19d are operated in a stopped state, the rotating case 9 is in a state where both of the pair of planting arms 10 are located above the pad surface (for example, the rotating case 9 is parallel to the pad surface). Is configured to stop. In this way, each of the first to fourth minority clutches 19a to 19d corresponds to two adjacent planting strips.

[3]
Next, the seedling bed 12, the vertical feed mechanism 13, and the first, second, third, and fourth vertical feed clutches 24a, 24b, 24c, and 24d will be described.
As shown in FIGS. 3, 4, 5, and 9, the support rail 23 is supported over the planting case 8, and the lower portion of the seedling support 12 is supported so as to be movable in the left-right direction along the support rail 23. . The right and left support frames 25 extend upward from the right and left side portions of the support frame 16, and the support frame 26 is connected to the upper portions of the right and left support frames 25. A roller 28 is rotatably supported by rods 27 fixed to a plurality of locations of the support frame 26, and a support frame 29 having a U-shaped cross section is connected along the front side of the upper portion of the seedling platform 12. Is inserted inside the support frame 29. Thereby, the seedling base 12 is supported so as to be movable in the left-right direction along the support rail 23.

  As shown in FIGS. 2 and 5, the seedling setting table 12 is provided with eight seedling setting surfaces, and each of the eight seedling setting surfaces of the seedling setting table 12 is produced in a separated state. . The first seedling platform portion 12a for the six strips on the right side of the seedling platform 12 is configured by connecting the seedling platforms for 6 segments, and the seedling platform 12 A second seedling platform portion 12b for the two left-hand sides is configured, and the seedling platform 12 is configured in a two-part structure of the first and second seedling platform portions 12a and 12b.

  When performing planting work, as shown in FIG.2 and FIG.5, the 1st and 2nd seedling platform parts 12a and 12b of the seedling platform 12 are connected (planting operation state). When the riding type rice transplanter is transported on a truck bed (not shown), as shown in FIG. 6, with the seedling platform 12 positioned at the left movement limit of the reciprocating lateral feed drive, The second seedling platform portion 12b of the seedling platform 12 is separated from the first seedling platform portion 12a of the seedling platform 12 remaining on the support rail 23 and supported so as to overlap the upper side of the first seedling platform portion 12a. (Non-planting work state). Thereby, the horizontal width of the seedling bed 12 becomes substantially the same as the horizontal width of the machine body.

  As shown in FIG. 4, the spiral shaft 20 extends from the feed case 15, the spiral shaft 20 is rotatably supported, and a feed member 22 is externally fitted to the spiral shaft 20. The seedling setting portion 12 a and the feed member 22 are connected via a bracket 21. As a result, the spiral shaft 20 is driven to rotate by the power of the feed case 15, the feed member 22 is reciprocated horizontally to the left and right along the spiral shaft 20, and the seedling bed 12 is reciprocated horizontally to the left and right along the support rail 23. Driven.

  As shown in FIGS. 3 and 4, a pair of endless rotating belt type vertical feed mechanisms 13 are provided on each seedling surface of the seedling platform 12, and two seedlings adjacent to the seedling platform 12 are adjacent to each other. The vertical feed mechanism 13 of the mounting surface is configured to operate integrally, and four sets of two vertical feed mechanisms 13 that operate integrally are provided. When the seedling platform 12 reaches the movement limit of the right and left reciprocating lateral feed driving, the vertical feed mechanism 13 is driven by a predetermined amount, and the seedling placed on the seedling platform 12 is placed below the seedling platform 12. Sent.

  As shown in FIGS. 3 and 4, the first, second, third, and fourth vertical feed clutches 24 a, 24 b, 24 c, and 24 d are provided in order from the right for the four sets of vertical feed mechanisms 13. The first to fourth vertical feed clutches 24a to 24d transmit power to and cut off power from the vertical feed mechanism 13 of the two seedling setting surfaces adjacent to the seedling setting table 12, so that the two seedling setting surfaces of the seedling setting table 12 are adjacent to each other. The vertical feed mechanism 13 is operated and stopped, and is urged to an operating state by a spring (not shown). Thereby, for example, when the first vertical feed clutch 24a is operated to the stop state, the vertical feed mechanisms 13 of the two rightmost seedling setting surfaces of the seedling setting base 12 are stopped. Thus, each of the first to fourth vertical feed clutches 24a to 24d corresponds to two adjacent planting strips.

[4]
Next, a hopper 32 for storing fertilizer, and a plurality of feeding sections 31 and feeding sections 31 that can supply the fertilizer in the hopper 32 to planting strips corresponding to the first to fourth minority clutches 19a to 19d can be operated and stopped. The first, second, third, and fourth fertilization clutches 38a, 38b, 38c, and 38d will be described.
As shown in FIGS. 1, 2, and 7, a support frame 30 is disposed along the left-right direction on the rear side of the driver seat 5, and four feeding portions 31 corresponding to two planting strips are connected to the support frame 30. A hopper 32 made of a transparent resin and storing fertilizer is connected across four feeding parts 31. Eight groovers 35 that form grooves on the side of the seedling (planting strip) planted by the planting arm 10 are prepared for each planting strip and attached to the grounding float 11. Two groovers 35 and one feeding part 31 are connected via a hose 36.

  As shown in FIGS. 7 and 17, each of the feeding portions 31 is provided with a feeding roll 31 a, and one drive shaft 37 is rotatably supported across the feeding portion 31. The first, second, third, and fourth fertilization clutches 38a, 38b, 38c, and 38d that operate and stop the feeding portion 31 by connecting and releasing the drive shaft 37 and the feeding roll 31a of the feeding portion 31 are the feeding portion 31. The first to fourth fertilization clutches 38a to 38d are urged to the operating state by a spring 38e.

  As shown in FIGS. 7 and 17, a one-way clutch 33 is externally fitted to the drive shaft 37, and an output shaft 77 branched immediately before a rear axle case 34 (see FIG. 1) that supports the rear wheel 2, and the one-way clutch 33. The connecting rod 39 is connected over the distance. A blower 40 is provided below the driver seat 5, and pipes 41 extend from the blower 40 to the left and right along the support frame 30, and air is blown to the side opposite to the portion where the hose 36 is connected in the feeding portion 31. A mouth (not shown) is formed, and the air blowing port of the feeding portion 31 is inserted into the pipe 41.

  Thus, as the seedling platform 12 is driven to reciprocate laterally to the left and right, the rotary case 9 is rotationally driven, and the planting arm 10 alternately takes out the seedlings from the lower part of the seedling platform 12 and puts them on the rice field. Plant. At the same time, the reciprocating motion of the linkage rod 39 due to the rotational motion of the output shaft 77 is converted into rotational motion by the one-way clutch 33, and the drive shaft 37 is rotationally driven intermittently. The feeding roll 31a of the feeding unit 31 is intermittently rotated via the first to fourth fertilization clutches 38a to 38d, and the fertilizer of the hopper 32 is fed from the feeding unit 31 by a predetermined amount. High-pressure wind from the blower 40 is supplied to the hose 36 through the pipe 41, and fertilizer is supplied to the grooving device 35 through the hose 36 by the high-pressure air, and is formed on the rice field by the grooving device 35. Fertilizer is fed into the ditch.

  For example, as shown in FIGS. 7 and 17, when the first fertilization clutch 38a is operated to the disconnected state, the feeding portion 31 corresponding to the two rotating cases 9 of the rightmost planting case 8 stops and the rightmost side Fertilizer is not supplied to the two groovers 35 corresponding to the two rotating cases 9 of the planting case 8. In this way, each of the first to fourth fertilization clutches 38a to 38d corresponds to two adjacent planting strips.

  As shown in FIGS. 7, 16, and 17, the operation shaft 63 is rotatably supported across the feeding portion 31 in parallel with the drive shaft 37, and faces the first to fourth fertilization clutches 38 a to 38 d on the operation shaft 63. The first, second, third, and fourth cam members 64a, 64b, 64c, and 64d are connected to the portions that are shifted in phase by a predetermined angle. An electric motor 65 that rotationally drives the operation shaft 63 is provided at one end of the operation shaft 63, and a potentiometer 66 that detects the phase of the operation shaft 63 is provided at the other end of the operation shaft 63. With the above structure, as described in [6] described later, the operation shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven by the electric motor 65, whereby the first to fourth cam members 64a to 64d are used. The first to fourth fertilization clutches 38a to 38d are operated to the activated and stopped states.

[5]
Next, the operation structure of the first to fourth minority clutches 19a to 19d and the first to fourth longitudinal feed clutches 24a to 24d will be described.
As shown in FIGS. 4, 5, 8, and 9, in the first seedling platform portion 12 a of the seedling platform 12, it is folded in a U shape across the front side of the second and third seedling mounting surfaces from the right. The right bracket 42 is connected, and the left bracket 42 bent in a U-shape is connected to the front side of the seedling surfaces of the fourth and fifth seedlings from the right.

  As shown in FIGS. 4, 5, 8, and 9, an electric motor 43 and a gear case 44 as an electric actuator are connected to the right bracket 42, and a drive shaft 45 is rotatably supported and fixed to the drive shaft 45. The transmission gear 45a and the pinion gear 44a of the gear case 44 are engaged with each other. A boss portion 46 is coupled to the left bracket 42, a support shaft 47 is rotatably supported by the boss portion 46, and an operation shaft 48 is coupled across the drive shaft 45 and the support shaft 47. Thus, the operation shaft 48 is rotationally driven via the drive shaft 45. A potentiometer 49 is connected to the boss portion 46, and the support shaft 47 and the potentiometer 49 are connected. When the operation shaft 48 is driven to rotate as described above, the support shaft 47 also rotates together. The tension meter 49 detects the phase of the operation shaft 48.

  As shown in FIGS. 8, 10 (b), (b), 11, the operation shaft 48 is made of an aluminum extruded material, and the outer surface is formed in a spline shape. Four first, second, third, and fourth cam members 51, 52, 53, and 54 integrally formed of synthetic resin are prepared. The first to fourth cam members 51 to 54 include two linear (planar) first cam surfaces 50a and 50b, an arc-shaped (arc-shaped) second cam surface 50c, and a horizontally long boss portion 50d. The inner surface of the boss portion 50 d is formed in the same spline shape as the outer surface of the operation shaft 48 (the opening shape of the boss portion 50 d of the first to fourth cam members 51 to 54 is the same shape as the cross section of the operation shaft 48).

  As a result, as shown in FIGS. 8, 11, and 12, the first to fourth cam members 51 to 54 are inserted by inserting the operation shaft 48 into the boss portions 50 d of the first to fourth cam members 51 to 54 at a predetermined phase. The first to fourth cams can be attached to the operation shaft 48 in a non-rotatable state at a predetermined phase, and the operation shaft 48 is inserted into the boss part 50d of the first to fourth cam members 51 to 54 at another predetermined phase. The members 51 to 54 can be attached to the operation shaft 48 in a non-rotatable state with another predetermined phase, and the first to fourth cam members 51 to 54 can be attached to the operation shaft 48 with a desired predetermined phase. By arbitrarily inserting the operation shaft 48 into the boss portions 50d of the first to fourth cam members 51 to 54, the number of the first to fourth cam members 51 to 54 attached to the operation shaft 48 can be arbitrarily set. Can do.

  4, 5, and 8, the first and second cam members 51 and 52 are attached to the portion of the operation shaft 48 inside the right bracket 42, and the portion of the operation shaft 48 inside the left bracket 42 is attached. The third and fourth cam members 53 and 54 are attached, and the first to fourth cam members 51 to 54 are attached to the operation shaft 48 by shifting the phase by a predetermined angle (see FIG. 12).

  As shown in FIGS. 4, 8, and 9, a support shaft 55 is connected to the right and left brackets 42, and the arm-shaped first and second operation portions 56 a around the support shaft 55 inside the right bracket 42. , 56b is supported toward the seedling table 12 so as to be swingable up and down, and the arm-like third and fourth operation portions 56c, 56d swing up and down around the support shaft 55 inside the left bracket 42. It is supported toward the seedling table 12 freely. A roller 57 is supported by the first to fourth operation portions 56a to 56d, and each of the rollers 57 of the first to fourth operation portions 56a to 56d rides on the first to fourth cam members 51 to 54 from above.

  As shown in FIGS. 4, 5, 8, and 9, right and left brackets 58 are connected to lower portions of the right and left brackets 42 in the support frame 29. Two outer wires 59 are connected to each other (four wires in total), and the inner wire 59 is connected to each of the first to fourth operation portions 56a to 56d. Two wires 61 are extended from the branch portion 60 below the wire 59 (a total of eight wires 61), and the inner of the wire 61 is the first to fourth minority clutches 19a to 19d and the first to fourth longitudinals. It is connected to each of the feed clutches 24a to 24d.

  As shown in FIGS. 5, 13, and 14, a vertical wall-shaped bracket 12 c is integrally formed on a portion of the seedling setting surface of the seedling setting table 12 above the vertical feed mechanism 13. Two branch portions 60 are disposed between the brackets 12c on the seedling surface adjacent to each other. As a result, the branch portion 60 is disposed above the vertical feed mechanism 13, and the wire 61 is less likely to interfere with the vertical feed mechanism 13 (the wire 61 is disposed at a position where it is difficult to interfere with the vertical feed mechanism 13. Easier). The positioning member 62 bent in a U-shape is attached to the bracket 12c on the seedling placing surface adjacent to the seedling placing base 12, and is held by the positioning member 62 so that the two branch portions 60 do not move. The positioning member 62 reinforces the connection of the adjacent seedling setting surfaces of the seedling setting table 12.

With the above structure, as described in FIGS. 4 and 5 and [6] described later, the operation shaft 48 and the first to fourth cam members 51 to 54 are rotationally driven by the electric motor 43, whereby the first to the fourth. The first to fourth operation portions 56a to 56d are swung by the cam members 51 to 54, and the first to fourth minority clutches 19a to 19d and the first to fourth operation portions 56a to 56d and the wires 59 and 61, and The first to fourth vertical feed clutches 24a to 24d are operated to the activated and stopped states.
Here, the electric motor 43, the operation shaft 48, and the first to fourth cam members 51 to 54 are referred to as electric actuators that turn on and off the minority clutches 19a to 19d.

[6]
Next, the operation of the first to fourth minority clutches 19a to 19d, the first to fourth longitudinal feed clutches 24a to 24d, and the first to fourth fertilization clutches 38a to 38d will be described.
As shown in FIGS. 1 and 20 to 24, an operation unit 68 is attached to a steering panel 70 of a handle post 72 that supports a steering handle 67 that steers the front wheel 1. The operation unit 68 includes first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D, and a detection switch 68E as detection means for detecting the operation positions of the artificial operation tools 68A, 68B, 68C, and 68D. , 68F, 68G, 68H. First, second, third, and fourth operation units 68 are arranged on the left side in order from the right side.

  The configuration of the first to fourth detection switches 68E to 68H will be described. 22 to 24, the first, second, third, and fourth detection switches 68E, 68F, 68G, and 68H are limit switches, and a seedling remaining amount sensor (not shown) attached to the seedling table 12 is not shown. ) The same type of switch as the limit switch used is used. Accordingly, since the waterproof function is provided, the electronic device attached to the control panel 70 of the handle post 72 is sufficient in terms of the waterproof function.

  A mounting structure of the first, second, third, and fourth operation units 68 will be described. As shown in FIGS. 21 to 23, flange surfaces 71a and 71a are formed at upper ends of both side wall portions 71A and 71A of the cross-section channel type bracket 71, and the flange surfaces 71a and 71a of both side wall portions 71A and 71A are operated. It is attached and fixed from the lower side of the panel 70. Therefore, the bracket 71 is located in the internal space of the handle post 72.

An upper support shaft 73 is installed over both side walls 71A and 71A of the bracket 71, and the first, second, third and fourth artificial operating tools 68A, 68B, 68C and 68D are swingable on the upper support shaft 73. Wearing.
Below the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D, first, second, third, and fourth detection switches 68E, 68F, 68G, and 68H are arranged. On the front end side of the first, second, third, and fourth detection switches 68E, 68F, 68G, and 68H, a lower support shaft 74 is installed over both side wall portions 71A and 71A of the bracket 71. One ends of the 1, 2, 3, 4 toggle springs 68I, 68J, 68K, 68L are locked.

The other ends of the first, second, third, and fourth toggle springs 68I, 68J, 68K, and 68L are locked to the first, second, third, and fourth artificial operating tools 68A, 68B, 68C, and 68D, respectively. The first, second, third, and fourth artificial springs 68A, 68B, 68C, and 68D are biased in the direction to hold the operation positions, and the first, second, third, and fourth toggle springs 68I, 68J, 68K, and 68L are inoperative. It functions as a stable switching spring.
The first, second, third, and fourth artificial operating tools 68A, 68B, 68C, and 68D are provided with projecting switch pressing portions 68Aa, 68Ba, 68Ca, and 68Da, and the switch pressing portions 68Aa, 68Ba, 68Ca, At 68 Da, the first, second, third, and fourth detection switches 68E, 68F, 68G, and 68H are pressed to operate the switches.

  The first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D are provided with knob portions 68Ab, 68Bb, 68Cb, and 68Db upward, and the knob portions 68Ab, 68Bb, 68Cb, 68Db protrudes upward and outward through openings provided in the control panel 70, respectively. The protruding knobs 68Ab, 68Bb, 68Cb, 68Db can be picked and switched between the operation position and the cutting operation position, and the knobs 68Ab, 68Bb, When the 68Cb and 68Db are swung, the first to fourth minority clutches 19a to 19d, the first to fourth longitudinal feed clutches 24a to 24d, and the first to fourth fertilization clutches 38a to 38d can be operated. When the knobs 68Ab, 68Bb, 68Cb, 68Db are swung to the front cutting operation position, the first to fourth minority clutches 19a to 19d, the first to fourth longitudinal feed clutches 24a to 24d, and the first to fourth fertilizers The clutches 38a to 38d can be operated in a stopped state.

  Since the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D are provided with the above-described knob portions 68Ab, 68Bb, 68Cb, and 68Db protruding from the control panel 70, the knob portions 68Ab and 68Bb are provided. , 68Cb, 68Db, when the artificial operation tools 68A, 68B, 68C, 68D are swung when switching between the entry operation position and the cutting operation position, the knobs 68Ab, 68Bb, 68Cb, 68Db enter the operation position. And the cutting operation position, the operator can easily see and the operability is improved.

  As shown in FIG. 15, a control device 69 for controlling the electric motors 43, 65 and the like is provided. As will be described later, the control device 69 operates the electric motors 43 and 65 based on the operation of the first to fourth detection switches 68E to 68H, and the detection signals of the potentiometers 49 and 66 are input to the control device 69. Yes.

In the following, a description will be given of the control operation by the control device 69. FIG. 12 shows the operation shaft 48 and the first to fourth cam members 51 to 54 in the full-line operation state in which the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D are entered and operated to the operation position. The first to fourth drive interlocking portions 56a to 56d are located at the positions shown in FIG. 12, and the first to fourth minority clutches 19a to 19d and the first to fourth longitudinal feed clutches 24a to 24d. Has been activated. The operation shaft 63 and the first to fourth cam members 64a to 64d are positioned in the phase shown in FIG. 19 (a), and the first to fourth fertilization clutches 38a to 38d are operated to the operating state.

  When the first artificial operating tool 68A is turned to the operating position in the full-line operating state, the operating shaft 48 and the first to fourth cam members 51 to 51 are driven by the electric motor 43 as shown in FIGS. 54 is rotated in the counterclockwise direction by a predetermined angle, and the roller 57 of the first drive interlocking portion 56a rides on the second cam surface 50c from the first cam surface 50a of the first cam member 51, and is interlocked with the first drive. The portion 56a is swung upward, the wires 59 and 61 are pulled, and the first small number of clutches 19a and the first longitudinal feed clutch 24a are operated in a stopped state. At the same time, as shown in FIG. 19B, the operating shaft 63 and the first to fourth cam members 64a to 64d are rotated by a predetermined angle in the counterclockwise direction on the paper surface by the electric motor 65, and the first cam member 64a. Is in contact with the first fertilization clutch 38a, and the first fertilization clutch 38a is slid to the left in FIG. 17 to be stopped.

  As described above, when the second artificial operation tool 68B is pushed and operated to the cutting operation position in the state where the first artificial operation tool 68A is operated to the cutting operation position, as shown in FIG. The operation shaft 48 and the first to fourth cam members 51 to 54 are further rotated by a predetermined angle counterclockwise on the paper surface by the electric motor 43, and the roller 57 of the second drive interlocking portion 56 b is moved to the second cam member 52. The first cam surface 50a rides on the second cam surface 50c, the second drive member 56b swings upward by the second cam member 52, the wires 59 and 61 are pulled, and the second minority clutch 19b And the 2nd vertical feed clutch 24b is operated to a cutting state. At the same time, as shown in FIG. 19C, the operation shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the counterclockwise direction on the paper surface by the electric motor 65, and the second cam member. 64b contacts the second fertilization clutch 38b, and the second fertilization clutch 38b is slid to the left in FIG.

  In this case, as described above, even if the operation shaft 48 and the first to fourth cam members 51 to 54, the operation shaft 63, and the first to fourth cam members 64a to 64d are rotationally driven, the roller 57 of the first drive interlocking portion 56a. Is maintained on the second cam surface 50c of the first cam member 51, and the first minority clutch 19a and the first longitudinal feed clutch 24a are maintained in the stopped state. The first fertilization clutch 38a is maintained in the cut state by being slid to the left in FIG. 17 by 64a.

  As described above, when the third artificial operation tool 68C is operated to the cutting operation position while the first and second artificial operation tools 68A and 68B are operated to the cutting operation position, as shown in FIG. The operation shaft 48 and the first to fourth cam members 51 to 54 are further rotated by a predetermined angle in the counterclockwise direction on the paper surface by the electric motor 43, and the roller 57 of the third drive interlocking portion 56 c is moved to the third cam member 53. The first cam surface 50a rides on the second cam surface 50c, the third drive member 56c swings upward by the third cam member 53, the wires 59 and 61 are pulled, and the third minority clutch 19c. And the 3rd vertical feed clutch 24c is operated to a cutting state. At the same time, as shown in FIG. 19D, the operation shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the counterclockwise direction on the paper surface as shown in FIG. 64c contacts the third fertilization clutch 38c, and the third fertilization clutch 38c is slid to the left in FIG.

  In this case, as described above, even if the operation shaft 48 and the first to fourth cam members 51 to 54 and the operation shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven, the first and second drive interlocking portions 56a, The state in which the roller 57 of 56b rides on the second cam surface 50c of the first and second cam members 51 and 52 is maintained, and the first and second minority clutches 19a and 19b and the first and second longitudinal feed clutches 24a, 24b is maintained in the cut state, and the first and second fertilizing clutches 38a and 38b are maintained in the cut state in which the first and second fertilization clutches 38a and 38b are slid to the left in FIG. 17 by the first and second cam members 64a and 64b. .

  As described above, when the first, second, and third artificial operation tools 68A, 68B, and 68C are operated to the cutting operation position, and the fourth artificial operation tool 68D is operated to the cutting operation position, FIG. As shown in FIG. 6, the operation shaft 48 and the first to fourth cam members 51 to 54 are further rotated by a predetermined angle counterclockwise on the paper surface by the electric motor 43, and the roller 57 of the fourth drive interlocking portion 56d is moved to the fourth cam. The first cam surface 50a of the member 54 rides on the second cam surface 50c, the fourth drive interlocking portion 56d is swung upward by the fourth cam member 54, the wires 59, 61 are pulled, and the fourth The small number of clutches 19d and the fourth longitudinal feed clutch 24d are operated in the disengaged state. At the same time, as shown in FIG. 19E, the operation shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the counterclockwise direction on the paper surface by the electric motor 65, and the fourth cam member 64d. Is in contact with the fourth fertilizer clutch 38d, and the fourth fertilizer clutch 38d is slid to the left in FIG. 17 to be turned off.

  In this case, even if the operation shaft 48 and the first to fourth cam members 51 to 54 and the operation shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven as described above, the first, second and third drive interlocking portions The state in which the rollers 57 of 56a, 56b, 56c ride on the second cam surface 50c of the first, second, third cam members 51, 52, 53 is maintained, and the first, second, third minority clutches 19a, 19b are maintained. 19c and the first, second and third longitudinal feed clutches 24a, 24b and 24c are maintained in the disengaged state, and the first, second and third fertilization clutches are provided by the first, second and third cam members 64a, 64b and 64c. 38a, 38b, and 38c are maintained in a cut state that is slid to the left in FIG. As a result, the first to fourth minority clutches 19a to 19d, the first to fourth longitudinal feed clutches 24a to 24d, and the first to fourth fertilization clutches 38a to 38d are brought into a full-strip stopped state.

[7]
As described in [6] above, when the first to fourth artificial operation tools 68A to 68D are turned to the operation position (all-strip stop state), the fourth artificial operation tool 68D is entered and operated to the operation position. Then, as shown in FIGS. 18D to 18C, the operation shaft 48 and the first to fourth cam members 51 to 54 are rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 43, so that the fourth The roller 57 of the drive interlocking portion 56d returns from the second cam surface 50c of the fourth cam member 54 to the first cam surface 50a, and the fourth drive interlocking portion 56d is swung downward by the fourth cam member 54, so that the wire 59 61 are returned, and the fourth minority clutch 19d and the fourth longitudinal clutch 24d are operated. At the same time, as shown in FIG. 19 (e) to FIG. 19 (d), the operation shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven by a predetermined angle in the clockwise direction on the paper, as shown in FIG. The four cam members 64d are separated from the fourth fertilization clutch 38d, and the fourth fertilization clutch 38d is slid to the right in the drawing of FIG.

  In this case, even if the operation shaft 48 and the first to fourth cam members 51 to 54 and the operation shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven as described above, the first, second and third drive interlocking portions The state in which the rollers 57 of 56a, 56b, 56c ride on the second cam surface 50c of the first, second, third cam members 51, 52, 53 is maintained, and the first, second, third minority clutches 19a, 19b are maintained. 19c and the first, second and third longitudinal feed clutches 24a, 24b and 24c are maintained in the disengaged state, and the first, second and third fertilization clutches are provided by the first, second and third cam members 64a, 64b and 64c. 38a, 38b, and 38c are maintained in a cut state that is slid to the left in FIG.

  As described above, when the first, second, and third artificial operation tools 68A, 68B, and 68C are operated to the cutting position and the third artificial operation tool 68C is operated and moved to the operation position, from FIG. As shown in FIG. 18B, the operating shaft 48 and the first to fourth cam members 51 to 54 are further rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 43, and the roller 57 of the third drive interlocking portion 56c. Is returned from the second cam surface 50c of the third cam member 53 to the first cam surface 50a, the third cam interlocking portion 56c is swung downward by the third cam member 53, and the wires 59 and 61 are returned. The third minority clutch 19c and the third longitudinal feed clutch 24c are operated to the engaged state. At the same time, as shown in FIGS. 19 (d) to 19 (c), the operation shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 65, The third cam member 64c is separated from the third fertilization clutch 38c, and the third fertilization clutch 38c is slid rightward in the drawing of FIG.

  In this case, as described above, even if the operation shaft 48 and the first to fourth cam members 51 to 54 and the operation shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven, the first and second drive interlocking portions 56a, The state in which the roller 57 of 56b rides on the second cam surface 50c of the first and second cam members 51 and 52 is maintained, and the first and second minority clutches 19a and 19b and the first and second longitudinal feed clutches 24a, 24b is maintained in the cut state, and the first and second fertilizing clutches 38a and 38b are maintained in the cut state in which the first and second fertilization clutches 38a and 38b are slid to the left in FIG. 17 by the first and second cam members 64a and 64b. .

  As described above, when the first and second artificial operation tools 68A and 68B are turned to the operation position and the second artificial operation tool 68B is entered and operated to the operation position, FIG. 18 (B) to FIG. 18 ( As shown in (b), the operating shaft 48 and the first to fourth cam members 51 to 54 are further rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 43, and the roller 57 of the second drive interlocking portion 56b is second. The second cam surface 50c of the cam member 52 returns to the first cam surface 50a, the second drive interlocking portion 56b is swung downward by the second cam member 52, the wires 59 and 61 are returned, and the second The small number of clutches 19b and the second longitudinal feed clutch 24b are engaged and operated. At the same time, as shown in FIG. 19 (c) to FIG. 19 (b), the operation shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the clockwise direction on the paper by the electric motor 65, The second cam member 64b is separated from the second fertilization clutch 38b, and the second fertilization clutch 38b is slid rightward in the drawing of FIG.

  In this case, as described above, even if the operation shaft 48 and the first to fourth cam members 51 to 54, the operation shaft 63, and the first to fourth cam members 64a to 64d are rotationally driven, the roller 57 of the first drive interlocking portion 56a. Is maintained on the second cam surface 50c of the first cam member 51, and the first minority clutch 19a and the first longitudinal feed clutch 24a are maintained in the stopped state. The first fertilization clutch 38a is maintained in the cut state by being slid to the left in FIG. 17 by 64a.

  As described above, when the first artificial operation tool 68A is turned into the operation position in the state where the first artificial operation tool 68A is turned to the operation position, as shown in FIGS. The operation shaft 48 and the first to fourth cam members 51 to 54 are further rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 43, and the roller 57 of the first drive interlocking portion 56 a is moved to the second cam of the first cam member 51. Returning from the surface 50c to the first cam surface 50a, the first cam interlocking portion 56a is swung downward by the first cam member 51, and the wires 59 and 61 are returned, and the first minority clutch 19a and the first The longitudinal feed clutch 24a is operated to the engaged state. At the same time, as shown in FIG. 19 (b) to FIG. 19 (a), the operation shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 65, The first cam member 64a is disengaged from the first fertilizer clutch 38a, and the first fertilizer clutch 38a is slid to the right in FIG. As a result, the full-line operating state is restored.

[8]
As shown in FIG. 17, when the fourth artificial operation tool 68D is turned to the operation position when the first to fourth artificial operation tools 68A to 68D are entered and operated to the operation position (all-line operation state). From the state shown in FIG. 12, the operation shaft 48 and the first to fourth cam members 51 to 54 are rotationally driven by a predetermined angle in the clockwise direction on the paper surface by the electric motor 43, and the roller 57 of the fourth drive interlocking portion 56d is fourth. The first cam surface 50b of the cam member 54 rides on the second cam surface 50c, the fourth drive interlocking portion 56d is swung upward, the wires 59 and 61 are pulled, and the fourth minority clutch 19d and The fourth longitudinal feed clutch 24d is operated to the disengaged state. At the same time, from the state shown in FIG. 19A, the operation shaft 63 and the first to fourth cam members 64a to 64d are rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 65, so that the fourth cam member 64d is rotated. The fourth fertilizer clutch 38d is brought into contact with the fourth fertilizer clutch 38d, and the fourth fertilizer clutch 38d is slid to the left in FIG.

As described above, in the state where the first to fourth artificial operation tools 68A to 68D are entered and operated to the operation position (all-line operation state), the fourth, third, and second artificial operation tools 68D, 68C, By cutting 68B and 68A in order and operating them to the operation position, in the reverse order to the previous item [6],
The fourth minority clutch 19d, the fourth longitudinal feed clutch 24d, and the fourth fertilization clutch 38d are disengaged (the third and second minority clutches 19c, 19b, 19a and the third, second longitudinal clutch 24c, 24b). 24a, third, second, and first fertilization clutches 38c, 38b, 38a)
The fourth and third minority clutches 19d and 19c, the fourth and third longitudinal feed clutches 24d and 24c, and the fourth and third fertilization clutches 38d and 38c are disengaged (second and first minority clutches 19b and 19a and second and first clutches). Vertical clutches 24b and 24a, second and first fertilization clutches 38b and 38a)
The fourth and third and second minority clutches 19d, 19c and 19b, the fourth and third and second longitudinal feed clutches 24d, 24c and 24b, and the fourth and third and second fertilization clutches 38d, 38c and 38b (the first minority) The engaged state of the strip clutch 19a and the first longitudinal feed clutch 24a, the first fertilizer clutch 38a),
In addition, a full cut state can be obtained.

  As described above, in the state where the first to fourth artificial operation tools 68A to 68D are turned and operated to the operation position (all-line stop state), when the first artificial operation tool 68A is entered and operated to the operation position, FIG. From the state shown in (d), the operation shaft 48 and the first to fourth cam members 51 to 54 are rotationally driven by a predetermined angle in the counterclockwise direction on the paper surface by the electric motor 43, and the roller 57 of the first drive interlocking portion 56a is the first. The second cam surface 50c of the cam member 51 returns to the first cam surface 50b, the first cam interlocking portion 56a is swung downward by the first cam member 51, the wires 59 and 61 are returned, and the first cam surface 51b is moved back. The small number of clutches 19a and the first longitudinal feed clutch 24a are operated to the engaged state. At the same time, from the state shown in FIG. 19E, the operating shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven by a predetermined angle in the counterclockwise direction on the paper surface by the electric motor 65, and the first cam member 64a is moved. The first fertilizer clutch 38a is moved away from the first fertilizer clutch 38a, and is slid to the right in FIG.

As described above, in the state in which the first to fourth artificial operation tools 68A to 68D are turned to the operation position (all-line stop state), the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, By entering 68D in order and operating it to the operating position, in the reverse order to the previous section [7],
The fourth and third and second minority clutches 19d, 19c and 19b, the fourth and third and second longitudinal feed clutches 24d, 24c and 24b, and the fourth and third and second fertilization clutches 38d, 38c and 38b (the first minority) The engaged state of the strip clutch 19a and the first longitudinal feed clutch 24a, the first fertilizer clutch 38a),
The fourth and third minority clutches 19d and 19c, the fourth and third longitudinal feed clutches 24d and 24c, and the fourth and third fertilization clutches 38d and 38c are disengaged (second and first minority clutches 19b and 19a and second and first clutches). Vertical clutches 24b and 24a, second and first fertilization clutches 38b and 38a)
The fourth minority clutch 19d, the fourth longitudinal feed clutch 24d, and the fourth fertilization clutch 38d are disengaged (the third and second minority clutches 19c, 19b, 19a and the third, second longitudinal clutch 24c, 24b). 24a, third, second, and first fertilization clutches 38c, 38b, 38a)
In addition, the full-line operating state is obtained.

[9]
In general, in the case of a riding type rice transplanter, when one planting process is completed and the aircraft reaches the shoreline, the seedling planting device 7 is driven to rise greatly from the surface, and the front wheel 1 is steered by the steering handle 67. Then, the aircraft is turned at the heel, and when the turning at the heel is finished, the seedling planting device 7 is driven down to the rice field and the next planting process is started.
Starts turning when ridge mentioned above, when the seedling planting device 7 is actuated raised, first, second manual operation member 68A, 68B, 68C, the operation returns to the operating position entering all 68D The riding type rice transplanter described above is provided. This configuration will be described below.

A structure in which the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D are all turned back to the operation position will be described. As shown in FIGS. 21 to 24, the side wall portions 71A and 71A of the bracket 71 supporting the first, second, third and fourth artificial operation tools 68A, 68B, 68C and 68D project downward. The extended portions 71b and 71b are integrally formed, and long through holes 71c and 71c are formed in the lower portions.
On the other hand, the lower frame portion 75B of the interlocking frame 75 formed by bending the rod-like member into a U-shape is passed through the through holes 71c and 71c formed in the two extension portions 71b and 71b, and the upper frame portion 75A is formed on both side walls. The interlocking frame 75 is configured to be slidable along the vertical direction of the through hole 71c by being supported by the edges of the portions 71A and 71A.

  As shown in FIGS. 21 to 24, the upper frame portion 75A of the interlocking frame 75 is provided with a vertically mounting rod-shaped mounting portion 75a. The rod-shaped mounting portion 75a has a link mechanism 6 for raising and lowering the seedling planting device. An inner wire 76a of a linking wire 76 as a linking mechanism that is linked to is connected and fixed. The outer wire 76 b of the linkage wire 76 is attached to a channel-shaped receiving portion 71 </ b> C extending downward from the bottom wall portion 71 </ b> B connecting the both side wall portions 71 </ b> A and 71 </ b> A of the bracket 71.

A torsion spring 78 is provided to urge the interlocking frame 75 moving up and down as follows. As shown in FIGS. 21 to 23, in the state along one side wall 71 </ b> A of the bracket 71, the intermediate arc portion 78 </ b> A of the torsion spring 78 is externally fitted and supported on the protruding portion of the lower support shaft 74. One pair of tip portions 78B and 78B extending from the intermediate arc portion 78A is engaged with the upper frame portion 75A of the interlocking frame 75, and the other is engaged with the extended portion 71b of the bracket 71.
With such a configuration, the interlocking frame 75 is urged to return upward by the torsion spring 78.
As described above in detail, the connecting wire 76 between the operation unit 68 and the seedling planting device 7 is assembled in a set on the bracket 71 so as to be detachable from the control panel 70. Easy to attach and detach.

Next, an automatic return mechanism A that automatically enters the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D to return to the operation position in conjunction with the raising operation of the seedling planting device 7. explain.
The first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D are provided with first, second, third, and fourth catching and locking portions 68Ac, 68Bc, 68Cc, and 68Dc, respectively, and the interlocking frame. The upper frame portion 75A of 75 is configured to be able to abut and engage from the lower side.
As shown in FIG. 24, when the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D are operated to the cutting operation position, the interlocking frame 75 is lifted by the torsion spring 78, The first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D hooking and locking portions 68Ac, 68Bc, 68Cc, and 68Dc are in contact with and engaged with the upper frame portion 75A of the interlocking frame 75 from the lower side. is there.

  As shown in FIG. 25, when the seedling planting device 7 is lifted from this state, the inner wire 76a of the linkage wire 76 as a linkage mechanism linked to the lifting link mechanism 6 is pulled to operate the interlocking frame. 75 moves downward. Then, the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D hooking and locking portions 68Ac, 68Bc, 68Cc, and 68Dc are in contact with the upper frame portion 75A of the interlocking frame 75 from the lower side. When pushed down, the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D rotate.

  The upper frame portion 75A of the interlocking frame 75 moves obliquely downward along an inclined guide surface 71d formed at the edge of both side wall portions 71A of the bracket 71, and the lower frame portion 75B of the interlocking frame 75 is formed in the through hole 71c. The descent movement of the interlocking frame 75 stops in a state where it reaches the lower end of. The upper frame portion 75A of the interlocking frame 75 stops at a midway position of the inclined guide surface 71d.

On the other hand, the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D hooking and locking portions 68Ac, 68Bc, 68Cc, and 68Dc pushed down by the upper frame portion 75A of the interlocking frame 75 are the upper support shafts. The first, second, third, and fourth toggle springs 68I, 68J, 68K, and 68L are moved by the urging force of the first, second, third, and fourth toggle springs 68I, 68J, 68K, and 68L. Stops at a position corresponding to the entry operation position of the four-manipulated operation tools 68A, 68B, 68C, 68D.
Such a mechanism is referred to as a mechanism for releasing the link between the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D and the seedling planting device 7.

  As shown in FIGS. 24 and 25, both the side wall portions 71A of the bracket 71 are set to set the entering operation position and the cutting operation position of the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D. A stopper pin 79 is installed over the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D first, second, third, and fourth detection switches 68E, 68F, 68G, and 68H. The switch pressing portions 68Aa, 68Ba, 68Ca, 68Da for pressing and the projections 68Ad, 68Bd, 68Cd, 68Dd formed on the peripheral edge apart from the switch pressing portions 68Aa, 68Ba, 68Ca, 68Da by a predetermined angle. The first, second, third, and fourth artificial operating tools 68A, 68B, 68C, and 68D can be inserted by abutting the stopper pins 79 alternately. It is constituted so as to set the operating position and the cutting operation position.

  When the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D are in the operating position by the raising operation of the seedling planting device 7, the raised state of the seedling planting device 7 is When maintained, the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D can be turned on and off. Therefore, when the seedling planting device 7 is lowered to start planting work, the corresponding artificial operation tool can be operated to cut and operate a desired planting line.

  An arrangement relationship between the first to fourth minority clutches 19a to 19d and the first, second, third, and fourth artificial operating tools 68A, 68B, 68C, and 68D provided on the control panel 70 will be described. As shown in FIGS. 17 to 20, the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D are arranged in the order from the right side to the left side of the control panel 70, Similarly, the first to fourth minority clutches 19a to 19d are arranged in order from the left side in the planting width direction. As a result, the arrangement of the minority clutches 19a to 19d to be operated and the artificial operation tools 68A, 68B, 68C, and 68D is in a consistent state.

A configuration for issuing an alarm when there is an erroneous operation on the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D will be described. In the planting operation, depending on the conditions of the field, it may not be possible to plant all the strips, and planting may be performed in a state where some planting strips are not operated.
In that case, it may set to the state which does not plant two strips of the left or right end in the planting width direction.

  In addition, as described above, the operations for the first, second, third, and fourth artificial operation tools 68A, 68B, 68C, and 68D are the ones adjacent to the first or fourth artificial operation tools 68A and 68D in order. It is designed to be turned on and off. Then, operating the second and third artificial operation tools 68B or 68C positioned in the middle to an operation position different from that of other artificial operation tools is not possible in advancing the work.

However , since the first, second, third, and fourth artificial operating tools 68A, 68B, 68C, and 68D and the minority clutches 19a to 19d are merely electrically linked, the first, second, third, It is possible to operate the four-manipulated operation tools 68A, 68B, 68C, 68D.
Therefore, as shown in FIG. 26, when the second and third artificial operation tools 68B or 68C are operated at different operation positions from the other operation tools, an alarm is generated by the sound generation device 80 as a notification means. In addition, an error message is displayed on the liquid crystal display device 81, and control is performed by the control device 69 so that the electric motors 43 and 65 are not operated.

  Next, a support structure at an intermediate position of the wire 61 that links the small number of clutches 19a to 19d and the longitudinal feed clutches 24a to 24d and the first to fourth drive interlocking portions 56a to 56d for driving them in and out. Will be described. As shown in FIGS. 3 and 5, a bracket 12 c is provided on the back surface of the seedling base 12. In the embodiment described above, the branch portion 60 of the wire 59 is interposed between the brackets 12c and 12c. Here, another configuration will be described.

  As shown in FIGS. 27 and 28, an upper idler roller around which the longitudinal feed belt of the longitudinal feed mechanism 13 is wound is provided, and the idler roller is lifted and biased to apply tension to the longitudinal feed belt. A spring 82 is provided. The upper end of the lifting spring 82 is hooked and locked to the bracket 12c. And the engagement recessed part 12d for latching the some wire 61 in this bracket 12c is formed.

  As shown in FIGS. 27 (a) and 27 (b), the engaging recess 12d may be formed with a notch 12e that opens upward or a notch 12e that opens downward. The width of the notch 12e is assumed to be such that the single wire 61 cannot be pulled out. As shown in FIG. 27 (b), when an engagement recess 12d having a notch 12e that opens upward is formed in one bracket 12c, the bracket 12c adjacent to the bracket 12c has As shown in (b), an engaging recess 12d having a notch 12e that opens downward is formed.

  As described above, by alternately forming the notches 12e opened upward and the notches 12e opened downward, the wires 61 and the like can be attached without coming out. In addition, the wire 61 moves relative to the bracket 12c in conjunction with the lateral feed movement of the seedling platform 12, but by adopting such a mechanism, the function of the bracket 12c also serves as a guide. Can be increased.

[First Alternative Embodiment of the Invention]
In order to move and displace the above-described operation unit between the entry operation position and the cut operation position, the artificial operation tools 68A, 68B, 68C, and 68D are swung, but the artificial operation tools 68A and 68B are used. , 68C, 68D may be configured to slide.

[Second Embodiment of the Invention]
As the electric actuator for turning on and off the minority clutches 19a to 19d, a configuration in which a wire mechanism linked to the minority clutches 19a to 19d is driven by an electric cylinder or the like may be adopted.

[Third Another Embodiment of the Invention]
The first, second, third, and fourth artificial operating tools 68A, 68B, 68C, and 68D are automatically linked to the lift link mechanism 6 as an automatic return mechanism A that automatically enters and returns to the operating position. You may link with the seedling planting apparatus 7 itself provided with .

[Fourth Embodiment of the Invention]
The present invention can be applied not only to the 8-row type seedling planting device 7 but also to the 10-row type, 6-row type, and 5-row type seedling planting device 7. In the case of the 6-row planting type and 5-row planting type seedling planting device 7, as shown in FIG. 6, it is necessary to configure the seedling bed 12 in a two-part structure of the first and second seedling bed portions 12a and 12b. No. 6 seedling placement surfaces are connected to form a seedling raising base 12 for a six-row planting type seedling planting device 7, and five-row planting type seedling planting device is connected to the five seedling placement surfaces. 7 seedling bed 12 may be used.
The present invention can also be applied to a riding type rice transplanter that is not equipped with the hopper 32, the feeding part 31, the grooving device 35, the hose 36, and the first to fourth fertilization clutches 38a to 38d.
In the above-described embodiment, the configuration in which the minority clutches 19a to 19d, the longitudinal feed clutches 24a to 24d, and the fertilizer clutches 38a to 38d are turned on and off by the operation of the operation unit 68 has been described. As long as the small number of clutches 19a to 19d can be turned on and off, it is sufficient.
As the detecting means, a contact type switch other than the limit switch and a non-contact type switch can be employed.

Overall side view of riding rice transplanter Overall plan view of riding type rice transplanter (planting work of seedling stand) Side view of seedling planting device Overall plan view of seedling planting device Front view of seedling planting device Overall plan view of riding type rice transplanter (non-planting work state of seedling stand) Rear view of the vicinity of the hopper, feeding part, electric motor, operation shaft, first to fourth cam members and first to fourth fertilization clutches Vertical front view of the vicinity of the electric motor, the operation shaft, the first to fourth cam members, and the first to fourth drive interlocking portions in the seedling table Vertical side view of the vicinity of the electric motor, the operating shaft, the first cam member, and the first drive interlocking portion in the seedling table Sectional drawing of the operation shaft and the first to fourth cam members in the seedling table Perspective view of operation shaft and first to fourth cam members in seedling table In the full-line operation state, the electric motor, the operation shaft, the first to fourth cam members and the first to fourth drive interlocking portions, the first to fourth minority clutches, and the first to vertical feed clutches in the seedling table are linked. Illustration Side view near the wire and branch Transverse plan view near wire and branch Control configuration diagram The perspective view of the operating shaft and the 1st-4th cam member in an extension part The top view which shows the connection state of the operating shaft in a paying-out part, the 1st-4th cam member, and the 1st-4th fertilization clutch. The figure which shows the operating state of the operating shaft in a seedling stand, the 1st-4th cam member, and the 1st-4th drive interlocking | linkage part. The figure which shows the operating state of the operating shaft in a delivery part, and the 1st-4th cam member. The top view which shows the state which provided the operation part in the control panel Side view showing a state in which the operation unit is provided on the control panel Plan view showing the operation unit Front view showing the operation unit A longitudinal side view showing a state in which the artificial operation tool and the seedling planting device are linked and the artificial operation tool is turned to the operation position. From the state shown in FIG. 25, a vertical side view showing a state in which the seedling planting device is raised and the artificial operation tool is forcibly entered and switched to the operation position. The top view which shows the operation state of the artificial operation tool which cannot be taken in the actual work The bracket which supports the wire which links an operation part and a small number of clutches is shown, (A) is a side view in which the notch is formed downward, (B) is a side view in which the notch is formed upward. It is a figure corresponding to FIG. 28, and is a front view which shows the bracket which supports the wire which links an electric motor and a small number of clutches

6 link mechanism 7 seedling planting device 19a, 19b, 19c, 19d
6 8 Operation section 68A, 68B, 68C, 68D Artificial operation tool
68Ab, 68Bb, 68Cb, 68Db knob
68Ac, 68Bc, 68Cc, 68Dc hooking and locking portion 68E, 68F, 68G, 68H detection means 69 control means
71 bracket
75 interlocking frame 76 interlocking mechanism
78 Spring 80 Notification means A Automatic return mechanism

Claims (3)

Equipped with a seedling planting device equipped with a seedling planting mechanism for multiple strips on a traveling machine body through a link mechanism,
A plurality of minority clutches that intermittently transmit power to the seedling planting mechanism, and an electric actuator that operates each minority clutch on and off,
A control means for controlling the electric actuator; and a plurality of operation units for inputting on / off signals for the electric actuator to the control means;
Each of the operation units is composed of an artificial operation tool that moves and displaces between an entry operation position and a cutting operation position, and detection means that detects the operation position of the artificial operation tool,
A plurality of the artificial operation tools arranged in a line in a direction orthogonal to the moving direction thereof, and each of the artificial operation tools is located in a cross-section channel type bracket equipped with the base. And a knob portion protruding from the bracket,
The detection means is disposed inside the bracket so that the base of the artificial operation tool is a detection target,
Based on the ascending operation of the seedling planting device with respect to the traveling machine body, an automatic return mechanism is provided for returning the artificial operation tool at the cutting operation position to the entry operation position,
The linkage mechanism having one end connected to the seedling planting device or the link mechanism is pulled in conjunction with the raising operation of the seedling planting device with respect to the traveling machine body, thereby positioning the cutting operation position. The automatic return mechanism is configured so that the base of the artificial operation tool is mechanically operated so that the artificial operation tool at the cutting operation position automatically returns to the entry operation position ,
Forming a hooking and locking portion at the base of each of the artificial operation tools,
The automatic return mechanism is provided with an interlocking frame that spans all of the plurality of hooking and locking portions,
Connecting the other end of the linkage mechanism to the linkage frame;
When the linkage mechanism is pulled in conjunction with the raising operation of the seedling planting device with respect to the traveling machine body, the hooking locking portion of the artificial operation tool located at the cutting operation position is moved by the interlocking frame. The operation of the work machine in which the interlocking frame is engaged with each of the hook locking portions so that the artificial operation tool at the cutting operation position is automatically returned to the entry operation position when pressed. Construction. A spring for engaging and energizing the interlocking frame toward the hooking locking portion at the cutting operation position;
In conjunction with the ascending operation of the seedling planting device with respect to the traveling machine body, the interlocking frame deviates from the movement range of the hooking and engaging portion against the entry operation position side against the biasing force of the spring. Enabling the operation from the entry operation position of the artificial operation tool to the cutting operation position,
The interlocking frame is configured to be engaged with the hooking locking portion at the cutting operation position by the biasing force of the spring in conjunction with a lowering operation of the seedling planting device with respect to the traveling machine body. The operation structure of the working machine according to 1 . The operation structure of the working machine according to claim 1 or 2 , further comprising a notification unit that notifies when a plurality of the artificial operation tools are operated in a state not corresponding to actual work.

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