JP2005261259A - Rice transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice transplanter configured to automatically stop a planting section at a desired height of an operator in every time by lifting or lowering the planting section. <P>SOLUTION: This invention relates to the rice transplanter provided with the planting section 4 for planting seedlings to a paddy field and installed on the rice transplanter body through a lifting and lowering link mechanism 27 and a lifting and lowering driving mechanism, a lifting and lowering lever 91 for lifting and lowering the planting section 4, and a seedling-loading switch SW64 which is a different operation system from the lifting and lowering lever 91, to lift up the planting section 4 and stop it at a height for seedling-loading operation, wherein the planting section 4 is lowered by the reoperation of the seedling-loading switch SW64 or the operation of the lifting and lowering lever 91 while keeping the planting section 4 in a state of lifted up at the height for seedling-loading by the operation of the seedling-loading switch SW64. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a rice transplanter, and more particularly, to a rice transplanter configured to include a planting unit for planting seedlings in a field via an elevating link mechanism and an elevating drive mechanism.

DESCRIPTION OF RELATED ART Conventionally, the rice transplanter of the structure provided with the planting part for planting a seedling in a farm field via a raising / lowering link mechanism and a raising / lowering drive mechanism is known. In such a rice transplanter, if the planting part is raised to the highest position during the seeding operation to replenish seedlings in the planting part, it will be difficult to perform the seeding work, and it will take time to move up and down. If the planting part is raised to the highest position at the time of turning or the like, it takes time to move up and down, and the work efficiency is lowered. Therefore, it is necessary to stop the planting part at a height at which it is easy to perform seedling joining work. Therefore, conventionally, an elevating lever for elevating operation of the planting part is provided, and the height of the planting part is adjusted by operating the elevating lever.
Examples of such rice transplanters include those shown in Patent Documents 1 and 2 below.

Japanese Patent No. 3335977 Japanese Patent No. 3092465

However, the conventional rice transplanter has the following problems.
Because the lifting operation is performed manually to the height where it is easy to perform the seeding work for the planting part using the lifting lever, there are many places depending on the operator's skill, experience, intuition, etc. However, there was a problem that it was difficult to stop at a height. And even if it wanted to stop the planting part at the same height every time, it was difficult to make the stop height the same height every time. That is, there was a problem that the stop height of the planting part could not be stabilized.
Also, when moving backward in the field (for example, when moving backward when starting planting work) or when moving backward and storing in the garage, when the planting part is at the highest position There was a problem that it was difficult to confirm backwards.

  Therefore, in the present invention, in the rice transplanter, an operating means different from the lifting lever is provided, and by operating the operating means, the planting part is raised or lowered automatically every time at the height desired by the operator. It is an object to be able to stop. In addition, an object of the present invention is to enable the planting part to be lowered or raised from the desired height by an operation as simple as possible.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
That is, according to the first aspect of the present invention, a planting part for planting seedlings in a field is mounted on the machine via a lifting link mechanism and a lifting drive mechanism, and a lifting lever for lifting and lowering the planting part is provided. In the rice transplanter, the operating system is different from the lifting lever, and includes an operating means for raising the planting portion and stopping it at a predetermined height, the operating means With the operation of raising the planting part and stopping at a predetermined height, the planting part is lowered from the predetermined height by re-operating the operating means or operating the lifting lever. It is something to be made.

  According to claim 2, rice planting equipped with a planting part for planting seedlings in a field via a lifting link mechanism and a lifting drive mechanism and a lifting lever for lifting and lowering the planting part to the machine. In this machine, the operation system is different from the lifting lever, and includes an operating means for lowering the planting portion and stopping it at a predetermined height, and operating the operating means. The planting part is raised from the predetermined height by re-operating the operating means or operating the lifting lever while the planting part is lowered and stopped at a predetermined height. It is.

  According to a third aspect of the present invention, the planting portion is raised and the planting clutch of the planting portion is switched from “ON” to “OFF” by the operation of the operating means. When the airframe is in a traveling state while stopped, the operator is informed that the planting unit is stopped at the predetermined height.

  According to a fourth aspect of the present invention, means for detecting the height of the planting portion is attached in the vicinity of the lifting link mechanism, and the attachment position of the detection means is configured to be adjustable.

As effects of the present invention, the following effects can be obtained.
That is, according to the rice transplanter as shown in claim 1, at the time of seedling joining work, etc., the planting part is raised by the operation of the operation means to automatically and stably stop at every desired height. Can do. Further, the descent from the desired height can be easily performed by re-operation of the operation means or operation of the operation lever. In this case, because the planting part is stopped at a height below the highest ascending position, it can be lowered in a shorter time than the planting part is lowered from the highest ascending position, and can be grounded to the field scene, etc. Work efficiency can be improved.

  According to the rice transplanter as shown in claim 2, when moving backward in the field (for example, when moving backward at the start of planting work) or when moving backward and storing in the garage, The planting portion can be lowered by the operation of the operation means and can be automatically and stably stopped every time at a desired height, thereby making it possible to confirm the rear. Further, the elevation from the desired height can be easily performed by re-operation of the operation means or operation of the operation lever. In this case, since the planting part is stopped at a height above the lowest position, the planting part can be raised to the highest position in a shorter time than when the planting part is raised from the lowest position. Improvement can be achieved.

  According to the rice transplanter as shown in claim 3, it is possible to prevent empty planting caused when the planting part rises and enters a traveling state while being stopped at the predetermined height. Can do.

  According to the rice transplanter as shown in claim 4, the operator can set the predetermined height to a height desired by the operator by adjusting the attachment position of the detection means. In addition, an inexpensive switch can be used as the detection means.

Next, the best mode for carrying out the present invention will be described with reference to the accompanying drawings. The following best mode for carrying out the present invention is an example embodying the present invention, and does not limit the technical scope of the present invention.
1 is a schematic configuration diagram showing the appearance of a riding rice transplanter according to an embodiment of the present invention, FIG. 2 is a side view of the schematic configuration diagram shown in FIG. 1, and FIG. 3 is an operation near the dashboard of the riding rice transplanter. Fig. 4 is a side view of the schematic configuration diagram shown in Fig. 3, Fig. 5 is a block diagram relating to the lifting control of the planting part of the riding rice transplanter, and Fig. 6 is a planting of the riding rice transplanter. It is a figure which shows an example of the raising / lowering control of an attaching part.

First, the overall configuration of the rice transplanter will be described with reference to FIGS. 1 and 2.
The rice transplanter of this embodiment is an 8-row (8-seater) riding rice transplanter, and the planting part 4 is mounted on the rear part of the traveling part 1 via the lifting link mechanism 27, and the traveling part 1 has a body frame 3. The engine 2 is mounted above the front part of the vehicle, the front wheel 6 is supported at the front lower part via the front axle case 7a, and the rear wheel 8 is supported at the rear part via the rear axle case 7.

  The engine 2 is covered with a bonnet 9, spare seedling platforms 10, 10 are arranged on both sides of the bonnet 9, a steering handle 14 is disposed on the dashboard 5 at the rear of the bonnet 9, and the bonnet 9 The vehicle body cover 3 is covered with the vehicle body cover 12 on both sides and the rear thereof, seats 13 are arranged at the rear position of the steering handle 14, the both sides of the bonnet 9, the front portion of the seat 13, the left and right sides of the seat 13, and the seat The back of 13 is a step. In addition, an 8-fertilizer fertilizer 33 is disposed behind the seat 13.

  The planting unit 4 provided at the rear part of the traveling unit 1 includes a seedling stage 16, rotary cases 22, 22... Provided at the rear part of a planting transmission case serving as a planting claw support unit, and the rotary cases 22, 22. Are made up of a planting claw attached to the center float 34, a side float 35, and the like. The seedling mounting table 16 is arranged in front and rear and low, and the lower part of the seedling mounting table 16 is supported by the lower guide rail 18 and the upper part of the front surface by the upper guide rail 19 so as to be slidable to the left and right. The lower guide rail 18 and the upper guide rail 19 are supported by a planting center case 20 via a planting frame 23 and the like.

  Then, connecting pipes (not shown) project from the planting center case 20 to the left and right sides, a planting transmission case (not shown) is fixed, and the transmission case projects backward in parallel. , Rotary cases 22, 22... That rotate in one direction are arranged on both sides of the rear portion of the planting transmission case, and planting claws are provided on the rotary cases 22, 22. Since one set of the rotary cases 22, 22... Is arranged for one seedling mounting table 16, eight rotary case transplanters are provided in the case of the above-mentioned eight-way riding rice transplanter.

  In addition, the front part of the planting center case 20 is connected to the lifting link mechanism 27 via a rolling fulcrum shaft. The lifting link mechanism 27 includes a top link 25, a lower link 26, and the like, and is disposed below the seat 13. The planting portion 4 is moved up and down by a lifting cylinder (an example of a lifting drive mechanism) (not shown) formed of a hydraulic cylinder serving as an actuator.

A center float 34 and a side float 35 are supported below the planting center case 20 and the planting transmission case connected to the rear part of the elevating link mechanism 27 via the link mechanism, and the front part of the center float 34 and the planting center are supported. An angle sensor 80 is disposed on the support frame of the case 20 or the planting transmission case as a means for detecting the lift of the float. As the angle sensor 80, a potentiometer, a rotary encoder, or the like is used. The angle sensor 80 is connected to a control unit 100 (FIG. 5), which will be described later, and performs raising / lowering control of the planting unit 4 according to the raising / lowering of the float. Further, markers 40 and 40 are disposed on both the left and right sides of the connecting pipe.
According to the riding rice transplanter having the above-described configuration, the seedling mounting table 16 is reciprocated to the left and right as the vehicle travels forward, and the planting claws are driven in synchronism with the reciprocating motion in each strip. It is possible to cut out seedlings for one stock and perform planting work continuously.

Next, operation systems such as levers and switches provided in the vicinity including the dashboard 5 will be described with reference to FIG. Note that FIG. 3 shows a state in which main parts related to the operation system in the vicinity including the dashboard 5 in FIGS. 1 and 2 are extracted, and drawing of parts not related to the operation system is omitted.
On the rear side of the dashboard 5 (the seat 13 side), a steering handle 14 is provided at the center in the left-right direction. That is, the dashboard 5 and the steering handle 14 are provided on the front side of the seat 13, and electrical operating means and levers related to the planting work of the planting unit 4 are arranged in the vicinity of the steering handle 14. Has been.

As specific examples of the electric operation means, a planting depth setting SW 61, a field hardness setting SW 62, a work selection SW 63, and a seedling joint SW 64 are arranged (here, “SW” means “switch”) The same shall apply hereinafter.
Further, as the levers, an operation area 90b such as a main transmission lever 94 is provided in the vicinity of the left side of the dashboard 5 with respect to the steering handle 14, while the dashboard is provided with respect to the steering handle 14. 5 is provided with an operation area 90a such as a cruise control lever 92, an accelerator lever 93, and an elevating lever 91 for manually raising and lowering the planting unit 4 by an operator. As shown in FIG. 3, the operation areas 90a and 90b are provided with guide grooves 91a, 92a, 93a, and 94a that define the swing ranges and holding positions of the levers. Further, the operation areas 90a and 90b may be made of a member separated from the dashboard 5 as shown in FIG. 3, or may be formed integrally with the dashboard 5. Good.

A work selection SW 63 and a seedling SW 64 are provided in the operation area 90a. A planting depth setting SW 61 and a field hardness setting SW 62 are provided on the right dashboard 5 with respect to the steering handle 14. Furthermore, a key SW 65 for inputting the start of the engine 2 is provided on the seat 13 side below the dashboard 5. The key SW 65 also has a function of turning on a cell motor for starting the engine 2 and a power source for supplying power to the control unit 100 (FIG. 5).
The position of the operation system such as the lever or the switch is not limited to the above-described position, and the position is not limited as long as the operator can operate while sitting on the seat 13. Further, pedals such as an accelerator pedal and a brake pedal are provided on the right step at the bottom of the dashboard 5.

Here, the planting depth setting SW61, the field hardness setting SW62, the work selection SW63, and the seedling joint SW64 will be described.
The planting depth setting SW 61 is a volume type switch for setting the planting depth when a seedling is planted in the field. Note that the volume type switch is a method of adjusting by rotating the switch, and is also called a dial type switch in another name.

  The field hardness setting SW 62 is a volume type switch for setting and inputting the field hardness obtained by the operator.

  The work selection SW 63 is a volume type switch for setting the riding rice transplanter so that the work corresponding to the state of the field can be performed by inputting the state of the field. Specific examples of the field situation include “standard”, “deep water”, “headland”, and the like. Here, “standard” means a standard field that can be performed without executing special control when the riding rice transplanter performs planting work (standard mode). “Deep water” means that the amount of water (depth) in the field is large compared to the above standard (deep water mode). “Headland” means that when the amount of water (depth) in the field is small compared to the above standard, or the condition of the field is poor compared to the central part of the field (such as a lot of unevenness, for example, turning at the field edge) This means the case where there are many irregularities in the farm scene (field surface) due to tires (headland mode). In addition, deep mud mode where mud pushing occurs frequently, and dust mode where a lot of dredgings and impurities are floating, etc. are considered, and target values for planting depth and planting sensitivity are set according to the field conditions. Thus, it can be changed by the work selection SW 63.

The seedling SW 64 does not raise the planting part 4 to the highest position so that the seedling joining work can be easily performed when the planting part 4 rises. It is a switch for automatically stopping at the height (position), and is a push-type momentary type switch for detecting a press by an operator. In addition, when the planting unit 4 is lowered, the seedling joint SW 64 automatically stops the lowering of the planting unit 4 at a predetermined height (position) without being lowered to the lowest lowered position. It is also a switch for. In other words, the seedling joint SW 64 is an operation system different from an elevating lever 91 described later, and is an example of an operation means for stopping the ascending or descending of the planting unit 4 at a predetermined height. Then, when the seedling SW 64 is operated, the state of the planting unit 4 is set to “seedling mode” by the control unit 100 (FIG. 5). In this way, it is possible to alert the operator that the seedling joint SW64 is a seedling joint SW64 by making only the seedling joint SW64, unlike the other SW61, 62, 63, and the push type. The operation of the seedling SW 64 can be a simple operation of one touch.
Here, the determined height (position) is lower than the highest position and higher than the lowest position, and is lower than the height at which the marker 40 is turned up and locked. In addition to the above-described height for seedling joining work, the predetermined height that is determined in advance includes a height for backward confirmation during reverse travel, and the like. This height for rearward confirmation is used for rearward confirmation when moving backward in the field (for example, when moving backward at the start of planting work) or when storing in a garage. It is necessary to lower the position from the highest position, but in this case, it is a height that facilitates backward confirmation. The seedling joint SW 64 can be operated even when the planting unit 4 is in the middle of lowering or in the middle of raising by operating the lifting lever 91.

  In addition, the seedling SW 64 is provided with a lamp or a light emitting diode (hereinafter referred to as “lamp 64a”) or the like. When the seedling relay SW 64 is operated by the operator and set to the above-described “seedling mode”, the lamp 64a is turned on. Conversely, as will be described later, when the “seedling mode” is canceled, the lit lamp 64a is turned off. In this way, the operator is informed that the planting unit 4 is in a stopped state at the predetermined height and is set to the “seedling mode”. The lamp 64a may start blinking when the “seedling mode” is set, and the blinking of the lamp 64a may be terminated when the “seedling mode” is canceled.

Here, in order to set a predetermined height (position), for example, the sensor 81 (FIG. 5) as means for detecting the height of the planting unit 4 is used as the lifting link mechanism 27 of the planting unit 4. (For example, the rotation base of the top link 25 or the lower link 26, the vicinity of the lifting cylinder to be lifted or the bracket protruding rearward from the machine side), and the mounting position of the sensor 81 It is set as an adjustable configuration. The sensor 81 includes a switch, a proximity sensor, and the like, and is connected to the control unit 100 (FIG. 5). And when the planting part 4 raises, the height predetermined by the height which the sensor 81 turns on is set, and conversely, when the planting part 4 descends, the sensor 81 turns off. A predetermined height is set according to the height. In this way, it is detected that the planting unit 4 has been raised or lowered to a predetermined height by switching on / off of the sensor 81. At this time, if the planting unit 4 is stopped, Good. Thereby, the operator can set a predetermined height by adjusting the mounting position of the sensor 81, and the planting unit 4 can be stopped at a desired height. An inexpensive switch can be used as the sensor 81.
Further, an angle sensor may be used instead of the sensor 81 such as a switch. In this case, an angle sensor is connected to the control unit 100, and a setting angle corresponding to a predetermined height is set with a knob or the like. Then, the planting unit 4 may be raised or lowered by the operation of the seedling joint SW 64, and the planting unit 4 may be stopped at a height raised or lowered to the set angle. Thereby, when an operator sets the angle of the angle sensor, a predetermined height can be set, and the planting unit 4 can be stopped at a desired height.

  According to the seedling joint SW 64 as described above, for example, the height of the planting unit 4 is set in advance to a height desired by the worker (for example, a height at which the seedling joint operation is easily performed), and the worker By pressing the joint SW 64, the planting part 4 is automatically stopped at this preset height. Thereby, the operator can automatically stop the planting part 4 at a desired height without manually operating the lifting lever as in the prior art. As a result, the work efficiency can be improved, and the planting unit 4 can be stopped at a desired height stably every time.

Next, the elevating lever 91 in the operation area 90a will be described with reference to FIG.
As described above, the elevating lever 91 is for operating the planting unit 4 by being operated directly by the operator, that is, manually.
As shown in FIG. 4A, the elevating lever 91 has a swing base portion fixed to a shaft 72a pivotally supported in the operation region 90a, and an arm 71a is fixed to the shaft 72a. . Similarly, below the shaft 72a and the arm 71a, a shaft 72b pivotally supported in parallel with the shaft 72a inside the operation region 90a and an arm 71b fixed to the shaft 72b are provided. A link 74 protrudes from 72b. Furthermore, the end portions of the link 73 are pivotally connected to the end portions of the two arms 71a and 71b, respectively, and the arms 71a and 71b are arranged substantially parallel to form a parallel link.

  A rotary SW 70 is provided at an intermediate position in the vertical direction between the arm 71a and the arm 71b. A substantially U-shaped U-shaped link 70 a is fixed to the rotary shaft of the rotary SW 70. The end of the link 74 is engaged in the U groove of the U-shaped link 70a, and the end of the link 74 is slidable in the groove of the U-shaped link 70a. And the structure which rotates the rotary axis | shaft of rotary SW70 because the position (namely, angle with respect to a rotary axis | shaft) of the U-shaped link 70a changes by the link 74 sliding on the inner surface side of the U-shaped link 70a. It has become.

  In such a configuration, for example, the state of the elevating lever 91 shown in FIG. 4A is the state pulled to the front side (that is, the state pulled to the rear side). In this state, the position of the U-shaped link 70a fixed to the rotary shaft of the rotary SW 70 is assumed to be the position shown in FIG. As shown in FIG. 4B, the rotary SW 70 has four contacts, and the contacts corresponding to the four contacts are connected to the control unit 100 (FIG. 5), and each contact is a U-shaped link. “Up”, “neutral”, “down”, and “planting” are set in advance at the position 70 a, and each corresponds to the lifting operation of the planting unit 4.

Here, the case where the raising / lowering lever 91 is pushed in the thick arrow direction in FIG. 4A (the forward direction of the riding rice transplanter) in the state shown in FIG. 4A will be described. In addition, the thick arrow direction of each part in Fig.4 (a) has shown the operation | movement direction corresponding to the operation of the said thick arrow direction of the raising / lowering lever 91. FIG.
In this case, the link 71 moves (thick arrow direction) by rotating the arm 71a fixed to the shaft 72a serving as the swing base of the lifting lever 91 (thick arrow direction), so that the arm 71b and the shaft 72b are moved. Rotates (thick arrow direction). At this time, the link 74 fixed to the shaft 72b slides on the inner surface side (in the groove) of the U-shaped link 70a, so that the rotary shaft of the rotary SW 70 rotates in the direction of the thick arrow. As a result, the position of the U-shaped link 70a is switched in the order of “up” → “neutral” → “down” → “planting”. As a result, the manual control of the planting unit 4 is switched in the order of “up” → “neutral” → “down” → “planting”.
On the other hand, by operating the elevating lever 91 in the reverse direction, that is, operating the elevating lever 91 in the rearward direction of the riding rice transplanter, the manual control of the planting unit 4 is performed as “planting” → “ It switches in the order of “down” → “neutral” → “up”.

  Since the control part 100 is connected with the raising / lowering cylinder drive part 200, it can drive the raising / lowering cylinder and can drive the planting part 4 to a desired position. That is, when the U-shaped link 70a is switched to the “up” position by the operation of the lifting lever 91, the planting portion 4 is raised, and when the U-link 70a is switched to the “neutral” position, the planting portion. 4 does not operate and remains in a neutral state. When switched to the “down” position, the planting unit 4 descends, and when switched to the “planting” position, planting of the planting unit 4 The clutch is "engaged" (that is, the driving force transmission state), and the planting claw is driven to start the planting operation. In this case, the planting part 4 is lowered, and the planting operation is performed by bringing the floats such as the center float 34 and the side float 35 into contact with the field scene. On the other hand, when the U-shaped link 70a is switched to the “up”, “neutral”, and “down” positions, the planting clutch of the planting unit 4 is “disengaged” (that is, the driving force non-transmitting state). It becomes. The planting clutch is provided in the transmission case on the machine side or in the center case of the planting unit 4 and is configured by an electromagnetic clutch or a motor mechanism to enable power on / off.

  When the U-shaped link 70a is in the “up” position, the planting part 4 is stopped at or near the highest position. However, during the ascent of the planting part 4, that is, before the planting part 4 reaches the most elevated position or its vicinity, the elevating lever 91 is operated to switch the U-shaped link 70a to the "neutral" position. If this happens, the planting unit 4 stops at the position reached when the position is switched to the "neutral" position. Similarly, when the U-shaped link 70a is in the “down” position, the planting portion 4 is stopped at or near the lowest lowered position. However, during the lowering of the planting part 4, that is, before the planting part 4 reaches the lowest lowered position or the vicinity thereof, the elevating lever 91 is operated to switch the U-shaped link 70a to the "neutral" position. If this happens, the planting unit 4 stops at the position reached when the position is switched to the "neutral" position. Therefore, when the U-shaped link 70a is in the “neutral” position, the planting portion 4 is stopped at an arbitrary height between the highest position and the lowest position. When the U-shaped link 70a is in the “planting” position, the planting unit 4 stops at or near the lowest lowered position. In this case, the U-shaped link 70a is in the “lowered” position. The same position as the case may be sufficient, or its vicinity may be sufficient.

  In addition, although it is set as the structure which provides the raising / lowering lever 91 which performs the raising / lowering operation of the planting part 4 manually, it is good also as a structure which provides operation SW for raising / lowering instead of the raising / lowering lever 91. For example, an ascending / descending operation SW including a planting part lowering SW, a stop SW, a planting part raising SW, a seedling joint SW, and the like may be provided on the cover portion of the steering handle 14. Here, the planting part lowering SW is a switch for lowering the planting part 4, the planting part raising SW is a switch for raising the planting part 4, and the stop SW is an elevation of the planting part 4. This is a switch for stopping the operation, and the seedling SW is a switch that performs the same function as the seedling SW64 described above.

  In FIG. 5, the block diagram regarding the raising / lowering control of the planting part 4 of a riding rice transplanter is shown. As shown in FIG. 5, the control unit 100 that performs overall control of the riding rice transplanter is provided with a rotary SW 70, a planting depth setting SW 61, a field hardness setting SW 62, a work selection SW 63, a seedling joint SW 64, and a seedling joint SW 64. Lamp 64a, key SW 65, angle sensor 80 for detecting a change in angle of the center float 34, the side float 35, etc., a sensor 81 for detecting the height of the planting part 4, a vehicle speed sensor 82 for detecting the vehicle speed of the riding rice transplanter, an alarm A buzzer 83, an elevating cylinder driving unit 200 for driving an elevating cylinder for elevating the planting unit 4 and other various sensors 300 are connected. The control unit 100 controls the entire riding rice transplanter based on the information acquired from the above-described units (switches, sensors, etc.) and the contents set and stored in advance in the control unit 100. In addition, since it is sufficient for the control part 100 to have the function which controls the whole riding rice transplanter, the arrangement | positioning location will not be specifically limited if it is a location which does not restrict | limit the function.

Next, an example of raising / lowering control of the planting part 4 of the riding rice transplanter will be described with reference to FIG.
In addition, the control subject in the control described below may be the control unit 100 that controls the overall control of the riding rice transplanter, or a dedicated control unit for controlling the planting unit 4 exclusively. When provided separately, the dedicated control unit may be used.

  As described above, by operating the elevating lever 91, the position of the rotary SW 70 where the position of the U-shaped link 70a (hereinafter referred to as “lever position”) is switched, specifically, preset. There are four points of contact of “rising”, “neutral”, “falling”, and “planting” (hereinafter referred to as “rising” position, “neutral” position, “falling” position, and “planting” position, respectively). The ascending / descending operation of the corresponding planting unit 4 is performed by the control unit 100. Further, when the seedling SW 64 is operated as the first operation, the state of the planting unit 4 is set to “seedling mode” by the control unit 100, and the planting unit 4 is set in advance by raising or lowering. It is automatically stopped at the height (hereinafter referred to as “seed height”).

Then, in the state where the “seedling mode” is set by the first operation and the planting part 4 is positioned at the seedling joint height, the re-operation of the seedling SW64 or the lifting lever is performed as the second operation. The raising / lowering control of the planting part 4 when 91 operation | movement is performed is demonstrated concretely using FIG.
In the following, if the lever position of the elevating lever 91 is switched to the “up” position before the seedling switching SW 64 is operated and set to “seedling mode”, it is switched to the “neutral” position. In this case, the case where the “down” position is switched and the case where it is switched to the “seedling” position will be described separately.

  First, when the lever position of the elevating lever 91 is switched to the “up” position, the planting unit 4 is stopped at or near the highest position. When the seedling SW 64 is operated in this state, the control unit 100 sets the state of the planting unit 4 to “seedling mode” and lowers the planting unit 4 to stop at the seedling height. At this time, the lamp 64a provided in the seedling joint SW 64 is turned on.

  When the seedling relay SW 64 is operated again as the second operation in the state set to the “seedling mode” (operation A shown in FIG. 6), the control unit 100 changes the state of the planting unit 4 to “seedling”. It cancels | releases from joint mode, raises the planting part 4, and stops it in the highest rise position or its vicinity. That is, the “seedling mode” is canceled by re-operation of the seedling joint SW 64, and the planting part 4 is raised and returned to the original position. At this time, the lamp 64a provided in the seedling joint SW 64 that has been lit is extinguished.

On the other hand, when the elevating lever 91 is operated as the second operation in the state set to the “seedling mode” and the lever position is switched from the “up” position to the “neutral” position (operation B shown in FIG. 6). The control unit 100 keeps the state of the planting unit 4 in the “seedling mode” (leaves it set), and keeps the planting unit 4 at the seedling joining height (leaves it stopped). As described above, even when the elevating lever 91 is operated, the lever position is switched to the “neutral” position, so that the “planting mode” is not canceled and the planting unit 4 is stopped at the planting height. Try to keep. In this state, the state is the same as a “seedling mode N” described later. At this time, the lamp 64a provided in the seedling joint SW 64 is kept lit.
Although not shown in FIG. 6, when the lift lever 91 is operated and the lever position passes through the “neutral” position and is switched to the “down” position or the “planting” position, the control unit 100 releases the state of the planting unit 4 from the “seedling mode” and lowers the planting unit 4 so as to stop at or near the lowest lowered position. In this case, the lamp 64a provided in the seedling joint SW 64 that has been turned on is turned off. When the “planting” position is switched, the planting clutch of the planting unit 4 is further set to “ON” so that the planting claw can be driven to start the planting operation. That is, control is performed so that manual operation has priority.

  Secondly, when the lever position of the elevating lever 91 is switched to the “neutral” position, the planting portion 4 is stopped at an arbitrary height between the highest position and the lowest position. In this state, when the seedling SW 64 is operated, the control unit 100 sets the state of the planting unit 4 to “seedling mode” and raises or lowers the planting unit 4 to stop at the seedling level. Let At this time, the lamp 64a provided in the seedling joint SW 64 is turned on. Note that the “seedling mode” is referred to as “seedling mode N” for convenience in the state where the lever position of the elevating lever 91 is in the “neutral” position.

  When the seedling relay SW 64 is operated again as the second operation in the state set to the “seedling mode N” (operation C shown in FIG. 6), the control unit 100 changes the state of the planting unit 4 to “ It cancels | releases from the seedling joining mode N ", and the planting part 4 is hold | maintained with the seedling joining height. In other words, the “seedling mode N” is canceled by re-operation of the seedling relay SW64, but the planting unit 4 does not move up or down but keeps the state stopped at the height of the seedling. At this time, the lamp 64a provided in the seedling joint SW 64 that has been lit is extinguished.

  On the other hand, when the lifting lever 91 is operated as the second operation in the state where the “seedling mode N” is set, and the lever position is switched from the “neutral” position to the “up” position (operation D shown in FIG. 6). ), The control unit 100 releases the state of the planting unit 4 from the “seedling mode N”, raises the planting unit 4 and stops it at the highest position or in the vicinity thereof. At this time, the lamp 64a provided in the seedling joint SW 64 that has been lit is extinguished.

On the other hand, when the lift lever 91 is operated as the second operation in the state set to the “seedling mode N” and the lever position is switched from the “neutral” position to the “down” position (operation E shown in FIG. 6). ), The control unit 100 releases the state of the planting unit 4 from the “seedling mode N”, lowers the planting unit 4 and stops it at the lowest lowered position or in the vicinity thereof. At this time, the lamp 64a provided in the seedling joint SW 64 that has been lit is extinguished.
Although not shown in FIG. 6, when the lift lever 91 is operated and the lever position passes through the “down” position and is switched to the “planting” position, the control unit 100 sets the planting position. The state of the part 4 is released from the “seedling mode N”, and the planting part 4 is lowered and stopped at the lowest lowered position or in the vicinity thereof. Then, the planting clutch of the planting unit 4 is set to “ON” so that the planting claw can be driven to start planting work. In this case, the lamp 64a provided in the seedling joint SW 64 that has been turned on is turned off.

  Third, when the lever position of the elevating lever 91 is switched to the “down” position, the planting unit 4 is stopped at or near the lowest position. When the seedling SW 64 is operated in this state, the control unit 100 sets the state of the planting unit 4 to the “seedling mode” and raises the planting unit 4 to stop at the seedling relay height. At this time, the lamp 64a provided in the seedling joint SW 64 is turned on.

  When the seedling relay SW 64 is operated again as the second operation in the state set to the “seedling mode” (operation F shown in FIG. 6), the control unit 100 changes the state of the planting unit 4 to “seedling”. The "joining mode" is released, and the planting part 4 is lowered and stopped at the lowest lowered position or in the vicinity thereof. That is, the “seedling mode” is canceled by re-operation of the seedling joint SW 64, and the planting unit 4 is lowered and returned to the original position. At this time, the lamp 64a provided in the seedling joint SW 64 that has been lit is extinguished.

  On the other hand, when the lifting lever 91 is operated as the second operation in the state set to the “seedling mode” and the lever position is switched from the “down” position to the “planting” position (operation G shown in FIG. 6). ), The control unit 100 releases the state of the planting unit 4 from the “seedling mode”, lowers the planting unit 4 and stops it at the lowest lowered position or in the vicinity thereof. Then, the planting clutch of the planting unit 4 is set to “ON” so that the planting claw can be driven to start the planting operation. At this time, the lamp 64a provided in the seedling joint SW 64 that has been lit is extinguished.

On the other hand, when the lift lever 91 is operated as the second operation in the state set to the “seedling mode” and the lever position is switched from the “down” position to the “neutral” position (operation H shown in FIG. 6). The control unit 100 keeps the state of the planting unit 4 set to the “seedling mode” and holds the planting unit 4 at the seedling height. As described above, even when the elevating lever 91 is operated, the lever position is switched to the “neutral” position, so that the “planting mode” is not canceled and the planting unit 4 is stopped at the planting height. Try to keep. In this state, the state is the same as the “seedling mode N” described above. At this time, the lamp 64a provided in the seedling joint SW 64 is kept lit.
Although not shown in FIG. 6, when the lift lever 91 is operated and the lever position passes through the “neutral” position and is switched to the “lifted” position, the control unit 100 displays the planting unit. The state of 4 is released from the “seedling mode”, and the planting part 4 is raised and stopped at the highest rise position or in the vicinity thereof. In this case, the lamp 64a provided in the seedling joint SW 64 that has been turned on is turned off.

  Fourth, when the lever position of the elevating lever 91 is switched to the “planting” position, the planting unit 4 is in the lowest lowered position or its vicinity, that is, the float such as the center float 34 or the side float 35 is placed. It touches the field scene and stops at a position where planting work is possible. Further, the planting clutch of the planting unit 4 is “ON”. When the seedling SW 64 is operated in this state, the control unit 100 sets the state of the planting unit 4 to the “seedling mode” and raises the planting unit 4 to stop at the seedling relay height. Further, the planting clutch of the planting unit 4 is set to “OFF”. At this time, the lamp 64a provided in the seedling joint SW 64 is turned on.

  When the seedling SW 64 is operated again as the second operation in the state set in the “seedling mode” (operation I shown in FIG. 6), the control unit 100 changes the state of the planting unit 4 to “seedling”. The "joining mode" is released, and the planting part 4 is lowered and stopped at the lowest lowered position or in the vicinity thereof. That is, the “seedling mode” is canceled by re-operation of the seedling joint SW 64, and the planting unit 4 is lowered and returned to the original position. Then, the planting clutch of the planting unit 4 is set to “ON” so that the planting claw can be driven to start the planting operation. At this time, the lamp 64a provided in the seedling joint SW 64 that has been lit is extinguished.

On the other hand, when the lifting lever 91 is operated as the second operation and the lever position is switched from the “planting” position to the “lowering” position in the state where the “seedling mode” is set (operation J shown in FIG. 6). ), The control unit 100 releases the state of the planting unit 4 from the “seedling mode”, lowers the planting unit 4 and stops it at the lowest lowered position or in the vicinity thereof. At this time, the lamp 64a provided in the seedling joint SW 64 that has been lit is extinguished.
Although not shown in FIG. 6, when the lift lever 91 is operated and the lever position passes through the “down” position and is switched to the “up” position, the control unit 100 sets the planting unit. The state of 4 is canceled from the “seedling mode”, and the planting part 4 is raised and stopped at the highest rise position or in the vicinity thereof. In this case, the lamp 64a provided in the seedling joint SW 64 that has been turned on is turned off.

  In the fourth case described above, the planting clutch of the planting unit 4 is switched from “ON” to “OFF” by operating the seedling joint SW 64 as the first operation, and the planting unit 4 state is set to “seedling mode”, and the planting part 4 rises from the lowest position or its vicinity (position where the float can contact the field scene and can be planted), If the passenger rice transplanter is in a traveling state, that is, if the vehicle speed of the passenger rice transplanter is greater than 0, the alarm buzzer 83 (notifying means An example) is notified to the operator that the state of the planting part 4 is maintained in the “seedling mode”, that is, the planting part 4 is stopped at the seedling height. To do. Here, the vehicle speed of the passenger rice transplanter is obtained by using a vehicle speed sensor 82 such as a Hall IC or an electromagnetic pickup (for example, provided on the conductive shaft portion between the front axle case 7a and the rear axle case 7 or the front and rear wheel axles). It is measured by the control unit 100 connected to the vehicle speed sensor 82.

  As described above, when the planting operation is performed before the transition to the “seedling mode”, the alarm buzzer 83 is activated when the “seeding mode” is in a traveling state without being released. By doing so, it becomes possible to alert the operator to forgetting to cancel the “seedling mode”. Thereby, when the operator operates the seedling joint SW 64 again, the state of the planting unit 4 is canceled from the “seedling mode”. As a result, empty planting caused by forgetting to cancel the “seedling mode”, that is, empty planting caused when the planting part 4 is in a traveling state while being raised and stopped at the seedling level. Can be prevented. Note that the notification means is not limited to the alarm buzzer 83 and may be any alarm sound that can alert the operator to forgetting to cancel the “seedling mode”. Further, the notification may be made by displaying on a display unit or the like on the dashboard 5 or lighting a lamp or the like.

As described above, the operation of the seedling joint SW 64 or the operation of the elevating lever 91 is performed by setting the seedling joining mode by setting the seedling joining SW 64 and stopping the planting unit 4 at the seedling joining height. When it is performed (in the case of operations E, F, I, and J shown in FIG. 6), the “seedling mode” is canceled and the planting part 4 is lowered from the height of the seedling.
Also, the operation of the seedling joint SW 64 or the operation of the elevating lever 91 was performed by setting the “seedling mode” and stopping the planting part 4 at the seedling joint height by the operation of the seedling joint SW 64. In the case (operations A and D shown in FIG. 6), the “seedling mode” is canceled to raise the planting part 4 from the height of the seedling.

  This enables the operator to set to “seedling mode” by one-touch operation of the seedling SW64 without manually operating the lifting lever as in the conventional case during seedling work, headland turning, or reverse movement at a small distance. Then, the planting part 4 can be raised and automatically stopped at a desired height. As a result, the planting part 4 can be stopped at a desired height stably each time. Also, the cancellation of the “seedling mode” can be performed with an easy operation. In this case, since the planting part 4 is stopped at the seedling joint height below the highest ascending position, the planting part 4 can be grounded again in a shorter time than when the planting part 4 is lowered from the highest ascent position. Thus, the time can be shortened, the mobility of the riding rice transplanter can be increased, and the working efficiency can be improved.

  Also, when going backwards in the field (for example, when going backwards at the start of planting work) or when going backwards and storing in the garage, the planting unit 4 is raised to the highest for backward confirmation It is necessary to descend from the position. Also in this case, the operator does not manually operate the lifting lever as in the prior art, and sets the “seedling mode” by the one-touch operation of the seedling joint SW 64 and lowers the planting part 4 so that the desired height is reached. Now, it can be automatically stopped, thereby making it possible to perform a backward confirmation. Also, the cancellation of the “seedling mode” can be performed with an easy operation. In this case, since the planting part 4 is stopped at the seedling joint height above the lowest position, it can be raised to the highest position in a shorter time than when the planting part 4 is raised from the lowest position. Thus, the time can be shortened, the mobility of the riding rice transplanter can be increased, and the working efficiency can be improved.

The schematic block diagram which shows the external appearance of the riding rice transplanter which concerns on embodiment of this invention. The side view of the schematic block diagram shown in FIG. The schematic block diagram which extracted the principal part of the operation system of the vicinity of the dashboard of a riding rice transplanter. The side view of the schematic block diagram shown in FIG. The block diagram regarding the raising / lowering control of the planting part of a riding rice transplanter. The figure which shows an example of the raising / lowering control of the planting part of a riding rice transplanter.

Explanation of symbols

4 Planting part 27 Elevating link mechanism 64 Seedling joint SW
91 Lifting lever 100 Control unit

Claims (4)

In a rice transplanter equipped with a planting part for planting seedlings in a field via a lifting link mechanism and a lifting drive mechanism to this machine, and equipped with a lifting lever for lifting and lowering the planting part,
The operating system is different from the lifting lever, and the apparatus includes operating means for raising the planting portion and stopping it at a predetermined height.
With the planting part raised and stopped at a predetermined height by the operation of the operation means, the planting part is moved to the predetermined position by re-operation of the operation means or operation of the elevating lever. Rice transplanter characterized by being lowered from the height. In a rice transplanter equipped with a planting part for planting seedlings in a field via a lifting link mechanism and a lifting drive mechanism to this machine, and equipped with a lifting lever for lifting and lowering the planting part,
The operating system is different from the lifting lever, and includes an operating means for lowering the planting portion and stopping it at a predetermined height,
With the operation means operated, the planting part is lowered and stopped at a predetermined height, and then the operation part is operated again or by operating the lifting lever. Rice transplanter characterized by being raised above the height. By operating the operation means, the planting part is raised and the planting clutch of the planting part is switched from “ON” to “OFF”,
Further, in a state where the planting portion is stopped at the predetermined height and the aircraft is in a traveling state, the planting portion is stopped at the predetermined height for the operator. It is alert | reported that it is. The rice transplanter of Claim 1 characterized by the above-mentioned. The means for detecting the height of the planting part is attached in the vicinity of the elevating link mechanism, and the attaching position of the detecting means is configured to be adjustable. Rice transplanter as described in 3.

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