JP4388651B2 - Rice transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a configuration of an operation unit for operating each unit of a rice transplanter.
[0002]
[Prior art]
Conventionally, operations necessary for planting work, such as raising and lowering the planting part and ON / OFF of the planting work, are performed on the planting operation part arranged on the front lower or side lower panel of the driver's seat. In actual work, each planting operation lever or the like provided in the planting operation unit is moved or rotated to a position corresponding to a predetermined operation mode (hereinafter referred to as “operation position”). I was going to move to operation.
[0003]
[Problems to be solved by the invention]
However, in the conventional planting operation lever, there is a method of returning to the original position when the hand is released after moving or rotating to a predetermined operation position. There is a problem that the operation mode is unknown and it is difficult to shift to a quick and reliable work. In addition, when the planting operation unit is disposed on the front lower or side lower panel of the driver's seat, the planting operation lever must be operated after largely removing one hand from the steering handle. Because it is necessary to remove the line of sight that was pointed forward for the first time and visually check the planting operation part, the planting line may be bent and look bad, which may cause worsening of the harvesting work. was there. Furthermore, since the guide groove of the planting operation lever is arranged in a linear direction, there is a problem that if it is touched by mistake, it will rotate to another operation position.
[0004]
[Means for Solving the Problems]
The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.
A planting operation unit (51) that enables each operation of raising and lowering the planting unit (15), planting work ON / OFF, and releasing the drawing marker is disposed near the steering handle (14), and An operation position detection sensor (62) and a planting operation lever (52) are provided in the planting operation part (51), and the planting operation lever (52) is located below the steering handle (14) and the steering handle. (14) and an accelerator lever (31), provided with a holding mechanism (61) capable of rotating and holding the planting operation lever (52), the holding mechanism (61) being a detent. When the main transmission lever is provided with a main transmission lever (5) and the main transmission lever (5) is set to the “reverse position”, the detent release operation is performed. Detent release actuator (63) is activated The holding mechanism (61) is configured to be released, and the planting operation portion (51) is provided with a guide groove (57) for the planting operation lever (52). ), Lower position (52b), "neutral position (52d)", "planting position (52c)" and "marker release position (52e, 52f)" are arranged in the "neutral position (52d)". 57) is provided with a notch-shaped sub-groove (57b), while the planting operation lever (52) is connected to the planting via an operation lever return spring (69) having one end connected to the upper and lower middle portions thereof. It is mounted on the “upper position (52a)” side of the operation unit (51).
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0006]
FIG. 1 is an overall side view of a riding rice transplanter, FIG. 2 is a perspective view of a front part of a machine body having a planting operation part according to the present invention, and FIG. 3 is a partial side view of the front part of the machine body showing a mounting configuration of the planting operation part. Sectional drawing and FIG. 4 are front views of a planting operation part.
[0007]
5 is also a plan view, FIG. 6 is also a plan view showing the shape of the guide groove, FIG. 7 is also a plan view showing the correspondence between the position of the planting operation lever and the operation mode, and FIG. 8 is a side view showing the detent mechanism. A partial cross-sectional view and FIG.
[0008]
First, the overall configuration of the riding rice transplanter according to the present invention will be described with reference to FIG. Reference numeral 1 denotes a traveling vehicle on which an operator is boarded. The engine 2 is mounted on the upper front part of the vehicle body frame 3 so that the traveling front wheel 6 is supported in front of the transmission case 4 via a front axle case. A rear axle case is connected to the rear portion, and the traveling rear wheel 8 is supported by the rear axle case.
[0009]
The engine 2 and the like are covered with a bonnet 9 and a driver's seat 13 is attached to an upper portion of a vehicle body cover 12 on which an operator gets on via a step 11, and a main transmission lever 5 is disposed on the left side of the driver's seat 13. A steering handle 14 is erected on the rear side of the bonnet 9 in front of the driver's seat 13. Further, a planting operation portion 51 according to the present invention is disposed on the right side of the steering handle 14.
[0010]
Reference numeral 15 denotes a planting part having a seedling stage 16 and a plurality of planting claws 17. The front tilted seedling stage 16 made of a synthetic resin having a front height, a low height, and a lower rail 18 and a guide rail 19 are provided. The rotary case 21 is supported by the planting case 20 so as to be slidable in the left-right reciprocating direction. The rotary case 21 that rotates at a constant speed in one direction is supported by the planting case 20 and is symmetrical about the rotational axis of the rotary case 21. A pair of nail cases 22 and 22 are arranged at positions, and the planting claws 17 and 17 are attached to the tips of the nail cases 22 and 22.
[0011]
A support frame 24 is provided on the front side of the planting case 20 via a rolling fulcrum shaft (not shown). The support frame 24 is connected to the traveling vehicle 1 via a link mechanism 27 including a top link 25 and a lower link 26. The link mechanism 27 is connected to the rear side. In the link mechanism 27, an elevating cylinder 28 for moving the planting portion 15 up and down is coupled to the lower link 26, and power to the planting portion 15 is input via the PTO transmission shaft 40. To be.
[0012]
With such a structure, the front and rear wheels 6 and 8 are steered and moved to move, and at the same time, one seedling of the seedling is taken out from the seedling mounting base 16 that is reciprocated to the left and right by the planting claws 17 and continuously. The planting work is done.
[0013]
Next, the planting operation unit 51 according to the present invention will be described in detail with reference to FIGS. First, the arrangement and mounting configuration of the planting operation unit 51 will be described. As shown in FIGS. 2 and 3, a steering shaft 35 is pivotally supported on a steering column 34 fixed to the rear portion of the bonnet 9, and a steering handle 14 is connected and fixed to an upper end portion of the steering shaft 35. From the right side of the bonnet 9, an accelerator lever 31 having a “<” shape in a side view for adjusting the rotational speed of the engine 2 protrudes.
[0014]
Further, an operation panel portion 32 provided with a monitor switch, a light switch, and the like is disposed at the rear upper portion of the bonnet 9, and the present invention is located on the side of the operation panel portion 32 and inward of the accelerator lever 31. A planting operation portion 51 is disposed, and a planting operation lever 52 protruding upward from the planting operation portion 51 is provided closer to the lower side than the steering handle 14.
[0015]
In this way, by arranging the planting operation lever 52 below the steering handle 14 and between the steering handle 14 and the accelerator lever 31, the operation of traveling and planting can be performed. Even in a planting operation that needs to be performed at the same time, the planting operation lever 52 can be easily operated with the other hand while the steering handle 14 is held with one hand with the line of sight facing forward. As a result, planting position accuracy and work efficiency can be greatly improved.
[0016]
3 to 5, the periphery of the planting operation portion 51 is covered with a case 53, and the front surface of the case 53 is fixed to the upper end of the support stay 54 via a fixing plate 54a. The lower end of the support stay 54 is fastened and fixed to the lower side of the front frame 38 to which the tilt handle operating lever 33 is connected. The rear portion of the front frame 38 is fixed to the front portion of the right side plate 34a extending laterally from the steering column 34, and the lower side and the front end of the front frame 38 are Y-shaped reinforcements when viewed from the side. The upper pipes 36 a and 36 b forming the member 36 are connected to the upper ends of the upper pipes 36 a and 36 b, and the lower end of the lower pipe 36 c of the reinforcing member 36 is fixed to a support member 3 a protruding from the vehicle body frame 3.
[0017]
At this time, the upper end of the support stay 55 is also fixed to the left side surface of the case 53 via a fixing plate 55a. The lower end of the support stay 55 is bolted to the side surface of the support member 3a together with the lower end of the lower pipe 36c. 39 is fixed together.
[0018]
In this way, the planting operation portion 51 is supported by the body frame 3 on the side, and the front is supported by both the body frame 3 and the steering column 34 from both sides and the front. The operation unit 51 can be securely attached to an appropriate position, and the arrangement configuration of the planting operation lever 52 can be finely adjusted by loosening or tightening the fasteners such as the bolts 39 as necessary. Therefore, it is possible to set the arrangement configuration in consideration of the physique of the worker and the habit.
[0019]
Next, the planting operation lever 52, its operation configuration, and internal configuration will be described. As shown in FIGS. 3 and 6, a guide plate 56 for guiding the planting operation lever 52 is provided on the upper surface of the planting operation unit 51 so as to be inclined at a low level on the operator side. A guide groove 57 that guides to a predetermined operation position by inserting the attached operation lever 52 is opened. The guide groove 57 includes a main groove 57a that opens linearly in the front-rear direction, and a right-hand portion from the front-rear middle part of the main groove 57a. And a sub-groove 57c extending leftward and rightward from the front portion of the main groove 57a.
[0020]
As shown in FIG. 7, the guide groove 57 has an upper position 52a for raising the planting part 15, a lower position 52b for lowering the planting part 15, and an arbitrary height during raising and lowering the planting part 15. The neutral position 52d to be held, the planting position 52c for turning on / off the planting operation after the planting unit 15 is lowered, and the marker release position 52e for releasing the stored left and right drawing markers and setting them on the field 52f is provided so that the planting operation lever 52 can be rotated to each operation position.
[0021]
As described above, since the guide plate 56 is disposed in an inclined manner so that the operator side is lowered, the position of the planting operation lever 52 is easy to see, and the planting operation can be performed quickly and reliably. Since the neutral position 52d for fixing the portion 15 to an arbitrary height is arranged in the notch-shaped sub groove 57b, the planting portion 15 can be reliably held at a predetermined height, When it is necessary to hold the planting part 15 at a high position as in the case of the seedling joining operation, even if the operator touches the planting operation lever 52 by mistake, it is possible to prevent erroneous operation. .
[0022]
Further, as shown in FIGS. 8 and 9, an operation position detection sensor 62 for detecting the position of the planting operation lever 52 rotated to each operation position is provided inside the planting operation unit 51, and each operation position. A detent mechanism 61 for elastically holding the planting operation lever 52 and a detent releasing actuator 63 for releasing the holding are disposed.
[0023]
Of these, the detent mechanism 61 will be described first. A lower end portion of the planting operation lever 52 is fixed to an operation lever shaft 74 pivotally supported by the case 53 with a fixing pin 77, and the operation lever shaft 74 has a detent cam 65 provided with a plurality of recesses 65 a on the rear side. The detent cam 65 can be rotated together with the rotation of the planting operation lever 52. On the other hand, the lower end of the detent lever 66 is pivotally supported on the case 53 via a lever shaft 73, and the upper end of the detent lever 66 is elastically mounted on the case 53 by a detent spring 70. The side-view wave-shaped detent plate 72 is urged in the direction of the detent cam 65 so that the convex portion of the detent plate 72 is engaged with the concave portion 65a of the detent cam 65 so that the planting operation lever 52 can be held at each operation position. I have to.
[0024]
Since the planting operation lever 52 can be held at each operation position in this way, the current operation mode can be easily confirmed simply by visually recognizing the position of the planting operation lever 52. Can be migrated quickly and reliably.
[0025]
The detent lever 66 is connected to the rear end of the release arm 71 via the lever shaft 73, and the front end of the release arm 71 is engaged with a long hole 68a opened at the lower part of the locking member 68, The upper end of the locking member 68 is connected to a rotating arm 67 fixed to a motor shaft 63a constituting the detent release actuator 63 so as to be movable up and down. On the other hand, the planting operation lever 52 is elastically mounted on the inner wall of the case 53 via an operation lever return spring 69 having one end connected to the middle part thereof.
[0026]
In such a configuration, when a detent releasing operation such as setting the main transmission lever 5 to the “reverse position” is performed, the detent releasing actuator 63 is actuated to lift the locking member 68, and the lever shaft 73 is centered. Thus, the detent lever 66 is rotated counterclockwise. As a result, the engagement between the concave portion 65a and the convex portion of the detent plate 72 is released, and the detent mechanism 61 is released.
[0027]
A position indicating arm 75 is suspended from the operation lever shaft 74, while a sensing arm 62a having a bifurcated shape in a side view is extended from a potentiometer type operation position detecting sensor 62 disposed under the case 53. The sensing arm 62a is engaged with a locking pin 76 projecting from the lower end of the position indicating arm 75, and when the planting operation lever 52 is rotated, the sensing arm 62a is also rotated and operated. The position detection sensor 62 can detect the current operation position.
[0028]
Further, the left and right marker releasing switches 43 and 44 are disposed below the guide plate 56. By tilting the planting operation lever 52 left or right at the planting position 52c, either the left or right marker is released. The switch arms 43a and 44a are pushed, the marker release switches 43 and 44 are turned on, and it is possible to detect whether the planting operation lever 52 is tilted to the left or right at the planting position 52c.
[0029]
Since the various switches and sensors in the planting operation unit 51 are all electronic and it is not necessary to consider mechanical connection with the main body, the planting operation unit 51 is in a relatively free position. Furthermore, since the structure itself of the planting operation part 51 is simple, the planting operation part 51 can be reduced in size, the operation force can be reduced, and the planting operability can be greatly improved.
[0030]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
A planting operation unit (51) that enables each operation of raising and lowering the planting unit (15), planting work ON / OFF, and releasing the drawing marker is disposed near the steering handle (14), and An operation position detection sensor (62) and a planting operation lever (52) are provided in the planting operation part (51), and the planting operation lever (52) is located below the steering handle (14) and the steering handle. (14) and an accelerator lever (31), provided with a holding mechanism (61) capable of rotating and holding the planting operation lever (52), the holding mechanism (61) being a detent. When the main transmission lever is provided with a main transmission lever (5) and the main transmission lever (5) is set to the “reverse position”, the detent release operation is performed. Detent release actuator (63) is activated The holding mechanism (61) is configured to be released, and the planting operation portion (51) is provided with a guide groove (57) for the planting operation lever (52). ), Lower position (52b), "neutral position (52d)", "planting position (52c)" and "marker release position (52e, 52f)" are arranged in the "neutral position (52d)". 57) is provided with a notch-shaped sub-groove (57b), while the planting operation lever (52) is connected to the planting via an operation lever return spring (69) having one end connected to the upper and lower middle portions thereof. Since the operation unit (51) is mounted on the "upper position (52a)" side, the planting operation lever (52) can be held at each operation position by the holding mechanism (61). You can easily check the current operation mode just by viewing the position. Between the respective operation modes it is possible to quickly and reliably migrated.
[0031]
In addition, since the current operation mode can be grasped simply by visually recognizing the position of the planting operation lever, it is possible to quickly and surely shift between each operation mode, and the steering handle is turned with the line of sight facing forward. While holding with one hand, the planting lever can be operated as it is with the other hand, which has been operated with the accelerator lever so far, and the planting operability is remarkably improved. Accuracy and work efficiency can be greatly improved.
[0032]
In addition, a guide groove for the operation lever is provided in the operation portion, and an “upper position / lower position”, “neutral position”, “planting position”, and “marker release position” are arranged in the guide groove, and the “neutral position” is set. Is provided with a notch-shaped sub-groove from the guide groove, which makes it difficult for the planting operation lever to come off from the `` neutral position ''. Even if the planting operation lever is touched, it is possible to prevent erroneous operation.
[Brief description of the drawings]
FIG. 1 is an overall side view of a riding rice transplanter.
FIG. 2 is a perspective view of a front part of an airframe having a planting operation part according to the present invention.
FIG. 3 is a partial cross-sectional side view of the front part of the airframe showing the mounting configuration of the planting operation part.
FIG. 4 is a front view of a planting operation unit.
FIG. 5 is also a plan view.
FIG. 6 is a plan view showing the shape of the guide groove.
FIG. 7 is a plan view showing the correspondence between the position of the planting operation lever and the operation mode.
FIG. 8 is a partial cross-sectional side view showing a detent mechanism.
FIG. 9 is a partial front sectional view of the same.
[Explanation of symbols]
14 Steering handle 15 Planting portion 31 Accelerator lever 51 Planting operation portion 52 Planting operation lever 52a Upper position 52b Lower position 52c Planting position 52d Neutral position 52e / 52f Marker release position 56 Guide plate 57 Guide groove 57b / 57c Sub Groove 62 detection means

Claims (1)

A planting operation unit (51) that enables each operation of raising and lowering the planting unit (15), planting work ON / OFF, and releasing the drawing marker is disposed near the steering handle (14), and An operation position detection sensor (62) and a planting operation lever (52) are provided in the planting operation part (51), and the planting operation lever (52) is located below the steering handle (14) and the steering handle. (14) and an accelerator lever (31), provided with a holding mechanism (61) capable of rotating and holding the planting operation lever (52), the holding mechanism (61) being a detent. When the main transmission lever is provided with a main transmission lever (5) and the main transmission lever (5) is set to the “reverse position”, the detent release operation is performed. Actuator for detent release (63) is activated The holding mechanism (61) is configured to be released, and the planting operation portion (51) is provided with a guide groove (57) for the planting operation lever (52). ), Lower position (52b), "neutral position (52d)", "planting position (52c)" and "marker release position (52e, 52f)" are arranged in the "neutral position (52d)". 57) is provided with a notch-shaped sub-groove (57b), while the planting operation lever (52) is connected to the planting via an operation lever return spring (69) having one end connected to the upper and lower middle portions thereof. A rice transplanter characterized in that it is mounted on the “upper position (52a)” side of the operation unit (51).

Images