TWI507121B - Rice transplanter - Google Patents

Description

rice transplanter

The present invention relates to a rice transplanter, and in detail, to an arrangement of an operation means disposed on an operation panel of a traveling portion.

In the conventional pedestal transplanter, a handlebar, a driver's seat, and the like are disposed on the walking portion, and the planting portion is detachably coupled to the rear side of the traveling portion. In the rice transplanter, a handlebar pillar is erected in front of the driver's seat on the walking portion, and an instrument panel is disposed on the handlebar pillar, and the handlebar shaft is protruded upward from the rear of the dashboard upper surface. Set the steering handle on the shaft. Further, in the rice transplanter, various operation means including a plurality of switches for performing display panel and row stop are disposed on the instrument panel in front of the handlebar shaft (for example, refer to Patent Document 1).

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2007-267754

However, in the rice transplanter of the above-mentioned patent document 1, when the operator riding on the driver's seat looks at the upper surface of the instrument panel, sunlight or the like is reflected on the upper surface of the instrument panel and enters the eyes of the operator, which makes it difficult to visually confirm. The means of operation used in planting operations.

Further, the operation direction of the operation means used in the planting operation is not easy to operate for the operator who is riding on the driver's seat, and the operator is not easy to operate the operation means used in the planting operation while riding in the driver's seat.

In the conventional rice transplanter, the various operating means for adjusting the planting state are placed in various positions such as the seedling stage and the driver's seat, and the operability is not only in the operation in the paddy field (paddy field). And will hinder delicate operation.

Here, the present invention has been made in view of the above problems, and provides a rice transplanter which is easy to perform an operation of an operation means used in a planting operation and can improve visibility.

The problem to be solved by the present invention is as described above, and the means for solving this problem will be described next.

In other words, the present invention is a rice transplanter including a driver's seat and an instrument panel disposed in front of the driver's seat and provided with a handlebar, and the planting portion is connected to the walking portion so as to be movable up and down. The utility model is characterized in that: the handle shaft is supported by a handle shaft protruding upward from the upper surface of the instrument panel, and a planting operation tray equipped with a planting operation means used in the planting operation is disposed on the instrument panel. In the upper surface, the operation panel surface of the planting operation panel is set to be inclined toward the driver's seat obliquely more obliquely than the surface perpendicular to the axial direction of the handlebar shaft.

In the present invention, the planting operation panel is disposed on the driver's seat side of the handle shaft of the handlebar.

In the present invention, a display panel for displaying a work condition in the planting portion is provided on the upper surface of the instrument panel, and an operation panel surface of the display panel is provided as an inclined surface that is inclined downward toward the driver's seat, and the planting is performed. The operation panel of the operation panel is set to be inclined by the same slope as the operation panel surface of the aforementioned display panel or by a slope smaller than the operation panel surface.

In the present invention, the planting operation means disposed on the operation panel surface of the planting operation panel is a line stop operation means.

In the present invention, the line stopping operation means is configured to be detachable from the planting operation panel.

The present invention achieves the effects shown below.

In the present invention, since the operation panel of the planting operation panel is disposed obliquely so as to rise from the upper surface of the instrument panel toward the driver's seat side at a predetermined angle, it is easy to see the operation panel surface of the planting operation panel, and it is also easy to recognize the planting. Use the means of operation. Therefore, it becomes easy to visually confirm and operate the planting operation means.

Moreover, the planting operation panel is easily distinguished from other operation means, and the operation direction of the planting operation means is easy to operate for the operator who is seated in the driver's seat, and the operator does not need to overhand in the state of riding in the driver's seat. It can be easily operated by bending the fingers. Therefore, the operability of the planting operation means is improved.

In the present invention, the operator riding on the driver's seat does not obstruct the handlebar and the handlebar shaft when viewing the planting operation means. Therefore, the visual confirmation of the planting operation means can be further improved.

Moreover, the operator who is riding in the driver's seat can operate the planting operation means without changing the posture even in the state of operating the handlebar. Therefore, the operability of the planting operation means can be further improved.

In the present invention, the operator who is seated on the driver's seat is easy to simultaneously perform the operation of the planting operation means on the operation panel of the planting panel while viewing the operation panel of the display panel while grasping the operation state of the planting portion. See the operating panel of the display panel and the planting operation. Therefore, the operation of the planting operation means can be performed correctly and easily.

In the present invention, it is possible to easily recognize the line stop operation means as compared with the configuration in which the line stop operation means is provided on the side of the planting portion and the driver's seat, and it is easy to operate.

In the present invention, the line stop operation means can be removed from the planting operation panel, and instead of the line stop operation means, the line stop operation means and the other members of different specifications are disposed on the planting operation panel. Therefore, it is possible to easily change the specification of the planting operation panel portion, and it is also possible to reduce the cost of the specification change.

First, the overall configuration of the rice transplanter 1 according to an embodiment of the present invention will be described using Figs. 1 and 2 . In the following description, the right side of the rice transplanting machine 1 is referred to as the right side, and the left side of the rice transplanting machine is referred to as the left side. Further, in the present embodiment, the rice transplanter is an eight-row type (eight rows at a time), but is not particularly limited. For example, a six-row type and a ten-row type rice transplanter may be used.

As shown in Fig. 1 and Fig. 2, the rice transplanter 1 has a running portion 10 and a planting portion 40, and the seedlings can be planted in the rice field (秧田) by the planting portion 40 while walking by the running portion 10. The planting portion 40 is disposed at the rear of the traveling portion 10 and is connected to the rear portion of the traveling portion 10 so as to be movable up and down by the elevating mechanism 30.

In the traveling portion 10, the engine 14 is provided at the front portion of the body frame 11 and covered by the hood 15. The transmission case 5 (refer to FIG. 19) is supported by the front portion of the body frame 11 and is disposed below the engine 14.

The front drive axle box 6 is supported at the front of the body frame 11, and the front wheels 12 are attached to the left and right sides of the front drive axle box 6. The rear drive axle box 7 is supported at the rear of the vehicle body frame 11, and the rear wheels 13 are attached to the left and right sides of the rear drive axle box 7.

Further, the power transmission mechanism transmits the power of the engine 14 to the left and right front wheels 12 and the left and right rear wheels 13 through the transmission case 5, and the front wheels 12 and the rear wheels 13 are rotationally driven. Thereby, the running portion 10 is made to be able to move forward or backward.

Further, in the traveling portion 10, a driving operation portion 21 is provided in the middle of the front and rear of the body frame 11. In the front portion of the driving operation portion 21, an annular steering handle 18 for steering operation, a shift pedal 78 for shifting operation, a brake pedal 79, and the like are disposed. At the rear of the driving operation unit 21, the driver's seat 19 is disposed to be positioned behind the steering handlebar 18.

Further, around the steering handle 18 and the driver's seat 19 of the driving operation unit 21, an instrument panel 17 and a body cover 16 that is a part of the pedal for riding and lowering, and other operating levers and switches are disposed. Operating tool. By the handle 18, the shift pedal 78, the brake pedal 79, and other operating tools, the walking portion 10 and the planting portion 40 can be appropriately operated.

In the traveling portion 10, the preliminary seedling stages 24 are attached to the respective mounting frames 23 that are erected from the left and right sides of the front portion of the vehicle body frame 11, and are disposed on the left and right sides of the hood 15. Further, the prepared seedlings are placed on the preliminary seedling stage 24 so that the seedlings can be supplied to the planting unit 40.

In the traveling unit 10, the fertilizer application device 22 is supported by the rear portion of the vehicle body frame 11 via the pillar frame 20 or the like, and is disposed behind the driver's seat 19 of the driving operation unit 21. The fertilizer application device 22 is fertilized in the rice field by being driven by the power from the engine 14.

The fertilizer application device 22 includes a hopper 25 for storing the fertilizer, a feeding means, that is, a feeding mechanism 26, a blowing means, that is, a blower 27, and a conveying pipe, that is, a conveying pipe 28.

The hopper 25 is a container for accommodating granular fertilizer in each row, and has the same number as the number of planting rows, that is, eight rows in the present embodiment. Further, the fertilizer stored in the hopper 25 is discharged from the outlet of the hopper 25 by the delivery mechanism 26 by a predetermined amount.

The delivery mechanism 26 is disposed at a lower portion of the hopper 25. In addition, the delivery mechanism 26 is actuated by the power transmission mechanism (not shown) by the power from the engine 14, and the fertilizer is dropped toward the conveyance pipe 28 by a predetermined amount.

The blower 27 is a device that blows air into a ventilation duct (not shown). The blower 27 is a blower that is actuated by the rotation of the electric motor, and the operation of the blower 27 is controlled by the control device 80. The wind sent from the blower 27 is sent through the air supply pipe and sent to the respective transport pipes 28.

The conveyance pipe 28 is the same as the number of planting rows, that is, eight rows in the present embodiment, in each row from the delivery mechanism 26 until the application position near the planting position of the planting claw 45 to be described later. The conveyance pipe 28 guides the fertilizer which falls from the delivery mechanism 26 in each row. Each of the transport tubes 28 is connected to each of the air supply ducts, and the wind that is sent out from the air blower 27 flows into the transport tubes 28 through the air supply ducts.

In this configuration, the fertilizer supplied from the hopper 25 to the conveyance pipe 28 by the delivery mechanism 26 is conveyed by the wind blown from the blower 27 through the conveyance pipe 28 until it is near the planting position, and is directed toward the rice field. Was released. Thus, fertilization is performed in the rice field by the fertilizer application device 22.

In the planting portion 40, the planting gearbox is supported near the center of the lower portion of the planting frame 49 from which the transmission axle box is extended toward the left and right sides. The four planting transmission boxes 46 are each extended from the transmission shaft case toward the rear, and are disposed at appropriate intervals in the left-right direction.

The rotary box 44 is rotatably supported on the left and right sides of the rear end portion of each of the planting transmission boxes 46. The number of the rotating boxes 44 is the same as the number of planting rows, that is, eight rows are provided in this embodiment. Further, the two planting claws 45 are held by the rotation fulcrum of the rotary box 44, and are respectively mounted on both sides in the longitudinal direction of the rotary box 44.

The seedling stage 41 is disposed above the planting transmission case 46 in a state in which the seedling stage 41 is inclined from the front to the rear, and is attached to the rear portion of the planting frame 49 so as to be reciprocable in the left-right direction through the upper and lower guide rails. The seedling stage 41 is formed to be reciprocally traversable left and right by a cross-feeding mechanism (not shown).

The seedling stage 41 of the seedling floor mounting portion having a plurality of rows (8 rows) is such that each lower end side faces one of the rotating boxes 44, and is arranged in the left-right direction. Further, the seedling bottom plate is placed on each seedling stage 41, and when the rotating box 44 is rotated, the seedlings of one plant can be cut out from the seedling bottom plate on the seedling stage 41 by the planting claws 45.

The seedling feeding belt 47 that matches the number of rows is provided on the seedling stage 41. When the seedling stage 41 reaches the stroke end of the right and left reciprocating crosses, the seedling stage 41 can be moved by the vertical feeding mechanism to vertically feed the seedling bottom plate on the seedling stage 41 downward.

The power of the engine 14 is transmitted to the respective rotary boxes 44 through the planting gear box or the like, and the rotary box 44 is rotated. Thus, with the rotation of the rotary box 44, the two planting claws 45 can alternately take out the seedlings from the seedling bottom plate on the seedling stage 41 and plant them in the rice paddy.

At the same time, the power of the engine 14 is transmitted to the traverse mechanism and the longitudinal feed mechanism through the planting gear box, etc., and the seedling stage 41 is traversed left and right by the traverse mechanism, and the seedling bottom plate on the seedling stage 41 corresponds. The right and left reciprocating traverse of the stage is longitudinally fed downward through the longitudinal feed belt 47 through the longitudinal feed mechanism. Thereby, the seedling bottom plate on the seedling stage 41 is moved to the proper position with respect to the planting claw 45.

Here, the power transmission mechanism for transmitting power from the engine 14 to the fertilizing device 22, the rotating box 44, the traverse mechanism, and the longitudinal feed mechanism includes a planting clutch, and the corresponding planting clutch is disconnected, so that the power of the engine is directed toward the seedling. The incoming belt 47 and the rotating box 44 are conveyed or not conveyed. The disconnection of the planting clutch is switched by the operation of the line stop switches 62, 63, 64, 65 which will be described later.

In the planting unit 40, the left and right side buoys 42 of the rice field surface preparation for dividing the center of the two rows, and the left and right side buoys 43 of the rice field surface preparation for each of the left and right rows are made to each other. The front side is supported by the planting frame 49 side so that the rear side can be moved up and down as a pivot point, and is disposed below the planting transmission case 46.

In the planting portion 40, the scribing bars 48 are rotatably supported on the left and right sides of the lower portion of the planting frame 49. Each of the left and right scribing bars 48 is stored by being rotated upward with the base end side as a pivot point, and by being rotated downward from the storage state, the tip end side is protruded to the left or the right side. The rice fields are crossed.

Further, the aforementioned lifting mechanism 30 is provided between the traveling portion 10 and the planting portion 40. Specifically, the top link 31 and the bottom link 32 are placed between the traveling portion 10 and the planting portion 40, and the lift cylinder 34 is coupled between the bottom link 32 and the running portion 10. Further, by the expansion and contraction operation of the lift cylinder 34, the planting portion 40 is configured to be movable in the vertical direction with respect to the traveling portion 10, and can be moved up and down.

Next, the configuration of the instrument panel 17 and its surroundings will be described using Figs. 3, 4, and 5.

In the following description, the upper surface on which the instrument panel 17 is formed is referred to as the instrument panel surface 17a, and the surface on which the upper surface of the handlebar 18 is formed is referred to as the handle surface 18a, and the upper surface of the planting operation panel 51 is formed. The surface is the planting operation disk surface 51a, and the upper surface of the display panel 50 is formed as the display panel surface 50a.

As shown in FIGS. 1 and 3, the strut 8 is erected in the vicinity of the rear portion of the hood 15, and the instrument panel 17 is stretched over the upper portion of the strut 8. Further, the ring-shaped steering handle 18 is disposed above the instrument panel 17, and is coupled to the protruding end portion of the handle shaft 9 that protrudes upward from the instrument panel surface 17a.

The instrument panel surface 17a is formed so as to be inclined downward toward the rear in such a manner that the front side is high and the rear side is low, and is formed as an inclined surface that is inclined downward toward the driver's seat 19. At the center of the left and right sides of the instrument panel surface 17a and the rear side of the front and rear center, the handle shaft 9 is disposed such that the axial direction is perpendicular to the instrument panel surface 17a. Further, a planting operation panel 51 and a display panel 50 are disposed in the instrument panel surface 17a.

The handlebar 18 is manipulated, and its handle face 18a is configured to be lowered downward toward the rear. The projecting end of the handlebar shaft 9 is coupled to the central portion of the steering handlebar 18 which is disposed perpendicular to the handlebar face 18a and to the dashboard face 17a.

Here, when the angle with respect to the horizontal plane of the handle surface 18a is the inclination angle θ1 and the angle with respect to the horizontal plane of the instrument panel surface 17a is the inclination angle θ2, the inclination angle θ1 and the inclination angle θ2 become slightly the same inclination angle (θ1). = θ2). That is, the handle surface 18a and the instrument panel surface 17a are made slightly parallel.

As shown in FIG. 3, FIG. 4, and FIG. 5, in the instrument panel 17, the display panel 50 is disposed in front of the handlebar shaft 9 and at a substantially central portion in the left-right direction of the instrument panel 17. The display panel 50 is formed of a substantially rectangular planing surface whose longitudinal direction is oriented to the left and right, and can display the working condition in the planting portion 40.

Further, in the instrument panel 17, a planting operation disk 51 having a substantially rectangular shape is provided behind the handlebar shaft 9. In the planting operation panel 51, a planting operation means used in the planting operation is provided. Preferably, in the planting operation means, an operation means having a high frequency of use during the planting operation is provided.

In the present embodiment, the planting operation panel 51 is provided with a line stop operation unit 60, a sensitivity control button 55, and a buzzer stop switch 56 as planting operation means. Further, in the planting operation panel 51, an engine key insertion port 57 is disposed. Moreover, the planting operation means disposed on the planting operation panel 51 is not limited to these.

As shown in Fig. 3, the planting operation panel surface 51a of the planting operation panel 51 is formed to be inclined downward toward the rear side so as to be inclined from the front side to the front side, and is inclined to be inclined downward toward the driver's seat 19. This planting operation panel 51a is an inclined surface that is inclined downward toward the driver's seat 19 at a larger angle than the instrument panel surface 17a (handle surface 18a).

That is, the angle of the planting operation panel 51a with respect to the horizontal plane is the inclination angle θ3, and the inclination angle θ3 is larger than the angle with respect to the horizontal plane of the instrument panel surface 17a (handle surface 18a), that is, the inclination angle θ2 (θ1) (θ3) >θ2(θ1)).

In the same manner, the display panel surface 50a of the display panel 50 is formed to be inclined downward toward the rear in such a manner that the front side is high and the front side is low, and is formed as an inclined surface that is inclined downward toward the driver's seat 19. The display panel surface 50a is an inclined surface that is inclined downward toward the driver's seat 19 larger than the instrument panel surface 17a (handle surface 18a).

That is, the angle of the display panel surface 50a with respect to the horizontal plane is the inclination angle θ4, and the inclination angle θ4 is larger than the angle with respect to the horizontal plane of the instrument panel surface 17a (handle surface 18a), that is, the inclination angle θ2 (θ1) (θ4) >θ2(θ1)).

The display panel surface 50a of the display panel 50 and the planting operation panel surface 51a of the planting operation panel 51 are disposed in the instrument panel surface 17a with the handlebar shaft 9 held forward and backward. In the present embodiment, as shown in Fig. 3(a), the display panel surface 50a of the display panel 50 is an inclined surface which is formed in parallel with the planting operation panel surface 51a of the planting operation panel 51.

That is, the angle of the display panel surface 50a with respect to the horizontal plane is the inclination angle θ4, and the inclination angle θ4 is the same as the angle with respect to the horizontal plane of the planting operation disk surface 51a, that is, the inclination angle θ3 (θ4 = θ3).

Further, as shown in FIG. 3(b), the display panel surface 50a of the display panel 50 may be an inclined surface that is inclined downward toward the driver's seat 19 larger than the planting operation panel surface 51a of the planting operation panel 51.

That is, the angle of the display panel surface 50a with respect to the horizontal plane is the inclination angle θ4, and the inclination angle θ4 may be larger than the angle with respect to the horizontal plane of the planting operation disk surface 51a, that is, the inclination angle θ3 (θ4>θ3).

In other words, the planting operation panel surface 51a of the planting operation panel 51 has the same gradient as the display panel surface 50a of the display panel 50, or is inclined downward toward the driver's seat 19 more gently than the display panel surface 50a, and is smaller than the dashboard surface. 17a is inclined more downward toward the driver's seat 19.

As described above, the planting operation panel surface 51a and the display panel surface 50a are inclined by the same gradient, and the instrument panel surface 17a, the display panel surface 50a, and the planting operation panel surface 51a are inclined by different slopes.

Further, from the viewpoint of the operator riding on the driver's seat 19, the display panel surface 50a is placed on the inner peripheral side of the ring-shaped steering handlebar 18, and the planting operation panel surface 51a is placed in the vicinity of the rear portion of the handlebar 18 .

As shown in Figs. 4 and 5, the line stop operation means, that is, the line stop operation unit 60, has an automatic line switch 61 and line stop switches 62, 63, 64, and 65. The automatic reticle switch 61 and the line stop switches 62, 63, 64, and 65 are respectively spaced apart from each other by a predetermined interval in the left-right direction, and are sequentially arranged from the left side.

The automatic reticle switch 61 is for inserting (protruding or accommodating) the scribe line 48 which is scribed on the rice field which is a straight target in the adjacent row during the planting operation, and is rotated with the rice transplanter 1 The switch that is set in the manner of automatically switching between left and right interactively.

The line stop switches 62, 63, 64, and 65 are switches for operating the above-described fertilizer application device 22 and planting clutch. When the row stop switches 62, 63, 64, 65 are operated, the row stop clutch of the fertilizer application device 22 is actuated to be turned off, and the planting clutch is actuated to be turned off, so that the power cannot be made to correspond to the row of the operated switch. The delivery mechanism 26, the seedling feed belt 47, and the rotary box 44 are conveyed, and the delivery mechanism 26, the seed longitudinal feed belt 47, and the rotary box 44 are stopped. In this state, by re-operating the row stop switches 62, 63, 64, 65, the row stop clutch of the fertilizer application device 22 is actuated to be in contact with each other, and the planting clutch is actuated to be in contact with each other, so that the power is operated toward the corresponding operation. The feed mechanism 26 of the switch and the vertical feed belt 47 and the rotary box 44 are conveyed, and the feed mechanism 26 and the seed feed feed belt 47 and the rotary box 44 are actuated.

In the present embodiment, the delivery mechanism 26, the seed longitudinal feed belt 47, and the rotary box 44 are driven or stopped in response to the operation of the respective switches as follows. That is, by the operation of the line stop switch 62, the feeding mechanism 26 on the left side and the seed feeding belt 47 and the rotating box 44 are driven or stopped. By the operation of the line stop switch 63, the feed mechanism 26 and the seed feed feed belt 47 and the rotary box 44 which are divided into two rows on the left side of the center are driven or stopped. By the operation of the line stop switch 64, the feed mechanism 26 and the seed feed feed belt 47 and the rotary box 44 which are divided into two rows on the center right side are driven or stopped. By the operation of the line stop switch 65, the feeding mechanism 26 on the right side and the seed feeding belt 47 and the rotating box 44 are driven or stopped.

The row stop operation unit 60 is detachable from the planting operation panel surface 51a of the planting operation panel 51. In this case, in the planting operation panel 51a of the planting operation panel 51, if the operation of the operation unit 60 is replaced instead of changing the number of planting rows to 10 rows as shown in Fig. 6(a), it is possible to configure an automatic The line switch 161 and the five rows of row stop switches 162, 163, 164, 165, 166 stop the operation of the assembly 160. Further, as shown in Fig. 6(b), when the line stop operation unit itself is not required, the cover 260 can be disposed.

The sensitivity control button 55 adjusts the sensitivity in response to the hardness of the rice field, and drives the lifting actuator in response to the signal from the buoy sensor. In the case of a hard case, it is set to be insensitive, and in the case of softness, it is set to be sensitive. The way to adjust.

The buzzer stop switch 56 recognizes the alarm buzzer provided in the traveling portion 10 or the planting portion 40 when the clutch alarm, the seedling alarm, the fertilizer supply alarm, the fertilizer clogging alarm, or the like is made, and the operator 100 recognizes The switch for manually stopping the sound of the alarm buzzer can be used.

The engine key insertion port 57 is for turning the power on (ON), and the engine 14 starts to use the key insertion hole. When the operator inserts the key and rotates the power supply from the ON position to the start position, the starter motor rotates to start the engine 14.

As described above, the planting operation means including the line stop operation unit 60, the sensitivity control button 55, and the buzzer stop switch 56 is disposed on the planting operation panel surface 51a, and the operation means other than the planting operation means are disposed. Instrument panel surface 17a.

On the left side of the steering handle 18 and the planting operation panel 51, a main shift operating lever 52, that is, a main shift operating lever 52, is disposed. The main shift operating lever 52 is operated along the guide groove 52a formed on the instrument panel surface 17a, and switches the walking mode of the rice transplanter 1 to "moving", "low speed forward", "retracting", "pressing seedling", The operation method of each of the "neutral" walking modes.

As shown in Fig. 7, the guide groove 52a is composed of a groove 52b having a predetermined width in the front-rear direction, a groove 52c having a predetermined width in the left-right direction, and a groove 52d having a predetermined width in the front-rear direction. The groove 52c is connected to the groove 52b and extends rightward from the front and rear center portions of the groove 52b. The groove 52d is connected to the groove 52b at a position deviated to the right side from the groove 52b, and extends forward from the right side of the front end portion of the groove 52b.

The field of the rear end portion of the guide groove 52a, that is, the area of the rear end portion of the groove 52b is set at the retreat position P1. When the main shift operating lever 52 is operated to the retracted position P1, the traveling mode is switched to "reverse", and the rice transplanter 1 is allowed to move backward.

The outer portion of the center portion of the guide groove 52a, that is, the region of the tip end portion of the groove 52b is set at the low speed forward position P2. When the main shift operating lever 52 is operated to the low speed forward position P2, the traveling mode is switched to "low speed forward", and the rice transplanter 1 is made to be able to travel forward at a low speed.

Between the low speed advancing position P2 and the retreating position P1 of the guide groove 52a, the right side field, that is, the area of the right end portion of the groove 52c is set at the seedling position P3. When the main shift operating lever 52 is operated to the pressing position P3, the traveling mode is switched to "pressing seedling", the transmission of power to the front wheel 12 and the rear wheel 13, and the feeding of the belt 47, the rotating box 44, and the feeding toward the seedling. The power transmission of the mechanism 26 is stopped. This walking mode is selected when the operator is away from the driver's seat 19 during the planting operation and is pressed at the seedling stage 41.

The field of the intermediate portion of the retracted position P1 and the low-speed forward position P2 of the guide groove 52a, that is, the region of the groove 52b slightly before and after the center portion groove 52c and the vicinity of the connection portion is set at the neutral position P4. Moreover, the area other than the front end part and the rear end part of the guide groove 52a is a neutral field.

The field of the front end portion of the guide groove 52a, that is, the area of the front end portion of the groove 52d is set at the moving position P5. When the main shift operating lever 52 is operated to the moving position P5, the traveling mode is switched to "moving", and the rice transplanter 1 is made to be able to move forward. This walking mode is mainly selected when the rice transplanter 1 is walking on a road or the like.

In the guide groove 52a, a micro switch 85 serving as a shift operation position detecting means is disposed at the edge of the groove 52c in the seedling position P3. The micro switch 85 is in contact with the main shift operating lever 52 when the main shift operating lever 52 is operated to the pressing position P3 to switch ON/OFF.

Further, in the guide groove 52a, a neutral position sensor switch 86 serving as a shift operation position detecting means is disposed in the edge portion of the groove 52b in the neutral position P4. The neutral position sensor switch 86, when the main shift operating lever 52 is operated to the neutral position P4, senses the position of the main shift operating lever 52 to switch ON/OFF.

Further, in the handle shaft 9 of the handlebar 18, as shown in Figs. 4 and 5, a speed fixing lever 53 is provided. The speed fixing operation lever 53 is operated when the running portion 10 of the shift pedal 78 reaches the desired traveling speed, and the traveling portion 10 is an operation means for maintaining the traveling speed.

On the right side of the handlebar 18, a hydraulic planting operation lever 54 is provided. The hydraulic planting operation lever 54 is an operation means for performing an operation of raising and lowering the planting portion 40, cutting in the planting, and shifting the planting.

Further, the arrangement of the instrument panel surface 17a is not limited to the above operation means, and the arrangement of the operation means is not limited to the arrangement shown in Figs. 4 and 5. The other operation means disposed on the instrument panel surface 17a includes, for example, a speed selection switch 71, a combination switch 72, a hydraulic pressure stop switch 73, a planting portion inclination setter 74, a rice field condition switch 75, a seesaw type switch 76, and a selection switch 77.

The speed selection switch 71 is an operation means for switching the speed of the rice transplanter 1 to each of the "low speed", "medium speed", and "standard" speed modes. The speed selection switch 71 is disposed between the display panel 50 and the planting operation panel 51 and on the left side of the handlebar shaft 9 so as to be disposed close to the display panel 50.

The combination switch 72 has an operation means of a horn button, a flash switch, and a light switch. The combination switch 72 is disposed between the display panel 50 and the planting operation panel 51 and on the left side of the handlebar shaft 9, and is disposed close to the planting operation panel 51.

In the combination switch 72, when the horn button of the center portion is pressed, the alarm (horn) will sound. When the flash switch of a slightly rectangular parallelepiped shape located below the horn button is rotated to the left and right, the flash bulb (direction indicator) on the side to be rotated is turned off. By the point of the flash bulb being extinguished, the winding direction of the rice transplanter 1 can be known. When the light switch of a slightly rectangular parallelepiped shape located on the left side of the horn button is rotated forward, the headlights are turned on.

The hydraulic stop switch 73 is an operation means used to stop the hydraulic pressure for raising/lowering the planting portion 40 and to fix the planting portion 40. The hydraulic stop switch 73 is disposed between the display panel 50 and the planting operation panel 51 and on the right side of the handle shaft 9, and is disposed close to the planting operation panel 51.

The planting portion tilt setting device 74 is an operation means for holding the planting portion 40 at the horizontal level by the control of the oil pressure. The planting portion tilt setting device 74 is disposed between the display panel 50 and the planting operation panel 51 and on the right side of the handlebar shaft 9 so as to be disposed close to the display panel 50.

The rice field condition switch 75 is an operation means for setting the planting depth in accordance with the state of each paddy field of "deep water", "standard", and "headland". The paddy field condition switch 75 is disposed on the right side of the display panel 50 and in front of the hydraulic planting operation lever 54.

The seesaw switch 76 is an operation means for holding the planting portion 40 in front and rear horizontally by the control of the motor. The seesaw switch 76 is disposed in parallel with the rice field condition switch 75 on the right side of the display panel 50 and in front of the hydraulic planting operation lever 54.

When the main shift operating lever 52 is operated to the pressing position P3, the selection switch 77 selects any means for causing the blown air selection from the blower 27 to be in a stopped state or an operating state of a low air volume. The selection switch 77 is disposed on the right side of the display panel 50 and in front of the rice field condition switch 75 and the seesaw switch 76. However, the configuration location is not limited.

With this configuration, the planting operation means disposed on the planting operation panel surface 51a, that is, the line stop operation unit 60, the sensitivity control button 55, and the like, and the main shift operation lever 52 which is another operation means disposed on the instrument panel surface 17a. Compared with the hydraulic planting operation lever 54, it is configured to be protruded from the instrument panel surface 17a side at different angles.

As a result, the planting operation means disposed on the planting operation panel surface 51a can be clearly distinguished from other operation means, and when the operator riding the driver's seat 19 looks at the dashboard surface 17a of the instrument panel 17, it can be easily discriminated. The operating means required for the operating system.

As described above, the rice transplanter 1 according to the embodiment of the present invention includes the driver's seat 19 and the instrument panel 17 disposed in front of the driver's seat 19 and provided with the handlebar 18, The planting portion 40 is detachably coupled to the rice transplanter 1 of the running portion 10, and the handlebar handle 9 is supported by the handle shaft 9 projecting upward from the upper surface of the instrument panel 17 or the instrument panel surface 17a, and is disposed. The planting operation panel 51, such as the planting operation means used for the planting operation, that is, the stop operation unit 60 and the sensitivity control button 55, is provided on the instrument panel surface 17a of the instrument panel 17, and the planting operation panel surface 51a of the planting operation panel 51 is formed. The surface that is perpendicular to the axial direction of the handlebar shaft 9 is an inclined surface that is inclined toward the handlebar surface 18a and that is inclined downward by the driver's seat 19. And, operate the disk.

With this configuration, the planting operation panel surface 51a is inclined so as to stand up from the dashboard surface 17a toward the predetermined angle of the driver's seat 19 side. Therefore, when the operator 100 riding on the driver's seat 19 looks at the dashboard surface 17a, the light of the sun Then, the planting operation panel surface 51a can be easily seen without being reflected from the planting operation panel surface 51a, and the planting operation means can be easily recognized. Therefore, the operation means for planting can be easily and visually confirmed.

Moreover, the planting operation panel 51 can be easily distinguished from other operation means, and the operation direction of the planting operation means is a direction in which the operator 100 riding on the driver's seat 19 becomes easy to operate, and the operator 100 is riding on the driver's seat 19. The operation can be easily performed without excessively bending the hands and fingers. Therefore, the operability of the planting operation means is improved.

As described above, in the rice transplanter 1 according to the embodiment of the present invention, the planting operation panel 51 is disposed closer to the driver's seat 19 side than the handlebar shaft 9 of the steering handlebar 18. In other words, the planting operation panel 51 is disposed such that the operator 100 riding on the driver's seat 19 is disposed further forward than the handlebar shaft 9.

According to this configuration, the operator 100 riding on the driver's seat 19 can directly see the planting operation means without being blocked by the handlebar 18 and the handlebar shaft 9. Therefore, the visual confirmation of the planting operation means is further improved.

Further, even if the operator 100 riding on the driver's seat 19 operates the handlebar 18, the planting operation means can be operated at the same time without changing the posture. Therefore, the operability of the planting operation means is further improved.

As described above, the rice transplanter 1 according to the embodiment of the present invention is provided with the display panel 50 for displaying the working condition in the planting unit 40 on the instrument panel surface 17a of the instrument panel 17, and the display panel surface of the display panel 50. The 50a forms an inclined surface that is inclined downward toward the driver's seat 19, and the planting operation panel surface 51a of the planting operation panel 51 has the same slope as the display panel surface 50a of the display panel 50 or is smaller than the operation panel surface 50a. The slope is inclined.

With this configuration, the operator 100 who is seated in the driver's seat 19 can display the panel surface 50a while performing the operation of the planting operation means on the planting operation panel 51a while grasping the operation state of the planting portion 40 as seen on the display panel surface 50a. And the planting operation means it is easy to see at the same time. Therefore, the operation of the planting operation means can be performed correctly and easily.

As described above, in the rice transplanter 1 according to the embodiment of the present invention, the planting operation means disposed on the planting operation panel surface 51a of the planting operation panel is a line stop operation means, that is, the line stop operation unit 60 (row stop switch 62, 63, 64, 65).

With such a configuration, it is possible to easily recognize and easily operate the line stop operation component as compared with the configuration in which the line stop operation unit 60 (the line stop switches 62, 63, 64, 65) is provided on the side of the planting portion 40 and the driver's seat 19. 60 (row stop switches 62, 63, 64, 65).

As described above, in the rice transplanter 1 according to the embodiment of the present invention, the row stop operation unit 60 is detachably configured to the planting operation tray 51.

With this configuration, the line stop operation unit 60 can be removed from the planting operation panel 51, and instead of the line stop operation unit 60, the line stop operation means of the different specifications, such as the line stop operation unit 160, and the cover 260, etc. The other members are disposed on the planting operation panel 51. Therefore, it is possible to easily change the partial specifications of the planting operation panel 51, and it is also possible to reduce the cost of the specification change.

Moreover, each of the operation means on the instrument panel 17 and the planting operation panel 51 has been switched from a conventional mechanical structure to an electric power switch, and has a space-saving configuration.

Further, the instrument panel 17 may have a configuration as shown in Fig. 8.

That is, in the rear of the handlebar shaft 9, the planting operation panel 51 is provided so as to be inclined toward the driver's seat 19 side with respect to the instrument panel surface 17a. In the planting operation panel 51, the row stop switches 62, 63, 64, 65, and the engine are stopped. The key insertion port 57, the planting setting control button 58 for setting the planting speed, the sensitivity control button 55, and the buzzer stop switch 56 are arranged in order from the left.

A display panel 50 is provided in front of the handle shaft 9, and a hood release switch 59 for opening and closing the hood 15 is provided on the right side of the display panel 50. In the rear of the hood release switch 59, the rice field condition is provided. The switch 75 and the hydraulic planting operation lever 54 are arranged in order from the front. Further, a recess 17b for placing a cup or the like is provided on the left side of the display panel 50, and a guide groove 52a of the main shift operating lever 52 is provided behind the recess 17b.

In the vicinity of the handlebar shaft 9, on the right side of the handlebar shaft 9, a seedling automatic end closer switch 91 for moving the seedling stage 41 toward the stroke end is disposed, and the seedling automatic end is adjacent to the front of the switch 91. A planting inclination setting device 74 is disposed, and a planting depth automatic adjustment control button 92 for setting whether or not to automatically adjust the planting depth is disposed to the left of the planting portion inclination setter 74. Further, a combination switch 72 is disposed on the left side of the handle shaft 9, and an operation setting when the rice transplanter 1 is rotated is disposed in front of the combination switch 72 (for example, the left and right scribing bars 48 are automatically activated). And a switch 93 and a control button 94 for automatically adjusting the planting position of the seedlings in the rice field end to the setting of the predetermined position.

Further, the display panel 50 includes a left display unit 50b, a right display unit 50c, and a center display unit 50d.

In the left display unit 50b, in the operation of the direct seeder, when the rice is gone, the rice noodle alarm that lights up, the fertilizer application air stop display that lights up when the air supply is stopped, and the warning display are sequentially set from the top. The left display portion 50b is configured by a red high-luminance LED lighting.

In the right display portion 50c, when the seedling floor of the seedling stage 41 is reduced, the seedling warning is lighted, and when the fertilizer of the fertilizer application device 22 is reduced, the fertilizer supply alarm for lighting and the fertilizer application device 22 are blocked, and the light is turned on. The jam alarm is set in order from the top. The right display portion 50c is configured by a red high-luminance LED lighting.

In the central display unit 50d, when the scribing bar 48 on the left side is activated, the left side scribing bar of the lighting is displayed, and when the planting unit 40 is automatically raised and lowered when the rice transplanter 1 is rotated, the planting portion of the lighting is automatically raised and lowered. When the power is applied to the fertilizing device 22 and the power is transmitted, the PTO driving display of the lighting and the marking of the right side of the marking bar 48 are displayed, and the left side marking bar of the lighting is displayed in order from the left. The central display unit 50d is configured by a green high-luminance LED lighting.

Next, a blower control circuit that is responsible for (managing) the air supply means of the fertilizing device 22, that is, the operation and stop of the blower 27 will be described.

The conventional rice transplanter has a fertilizing device for fertilizing at the same time as planting. The fertilizer application device includes a hopper that accommodates the fertilizer, and a delivery means that discharges a predetermined amount of the fertilizer disposed in the lower portion of the hopper, and a blowing means that conveys the fertilizer by the wind to the fertilization position.

The air blowing means, that is, the air blower, is a means by which the motor is actuated, and the engine is actuated, and the fertilizer is discharged from the hopper by the feeding means to the fertilizing position by the wind power during the planting operation. This air blowing means is, for example, that it is impossible to carry out planting at the time of pressing, so that it is not necessary to carry the fertilizer until the fertilization position, and it is not necessary to operate the blower. Here, a technique for stopping the operation of the air blower when the main shift operating lever is operated to the position of the press-shifting operation is known (for example, Japanese Patent Laid-Open No. Hei 8-70663).

However, the work of the seedlings is based on the size of the rice paddy (the distance of reciprocation), the case where the row is stopped, and the case where the plurality of people perform the seedling operation, and the case where the work time is long and the case where the work is short. In the case where the main shift operating lever is used as the crushing position to stop the operation of the blower, the pressing operation can be completed in a short time, and when the planting operation is quickly opened again, the number of rotations of the blower is returned to the original number of revolutions. It takes time and the air volume of the blower is insufficient, and the predetermined amount of fertilizer cannot be carried. On the other hand, in the case of the operation of the rice seedlings at the end of the rice field, the operation of replenishing the seedlings at the subsidized seedlings, and the operation of replenishing the fertilizer in the hopper of the fertilizing device, the operation time is long, so the blower is stopped. In addition, the power consumption of the battery can be reduced and the noise can be reduced. Moreover, the interruption of the planting operation also has the length of the working time.

In view of the above-described problems, it is possible to provide a rice transplanter in which the air blowing means can be appropriately operated in accordance with conditions such as crushing work and planting work interruption, and power saving of the air blowing means can be achieved.

In other words, the rice transplanter is configured to be capable of moving up and down to the rice transplanter, and is provided with a shifting operation position that is operable to a plurality of stages including the seedling position, and a shifting operation position detecting means for supplying the shifting operation means; The operation device for detecting the traveling speed is located at a pressing position; and the fertilizer application device includes a hopper for storing the fertilizer, a delivery means for discharging a predetermined amount of fertilizer to be disposed in the lower portion of the hopper, and a fertilizer for discharging the fertilizer. The air blowing means until the application position is selected, and the operation means for selecting the operation state of the air blowing means when the traveling speed changing operation means is operated to the pressing position is selected as the stop state or the operation state of the low air volume; And the traveling state detecting means detects whether or not the rice transplanting machine is in a running state; and the control means controls the operation of the air blowing means, and the shifting operation position detecting means detects that the traveling speed shifting means is detected When it is operated to the pressing position or the neutral position or when it is detected as the walking stop state by the walking state detecting means It is selected so that the blowing means according to said selecting means actuated state becomes a stopped state or a low amount of wind.

According to this configuration, the operating state of the air blowing means of the fertilizer application device during the seedling operation is an operation state in which the stop state or the low air volume is selectively selected. Therefore, the operator can select the stop state or the low air volume in accordance with the time required for the press work, and if the stop state is selected, the power saving of the air blowing means can be effectively achieved. On the other hand, when the operation state of the low air volume is selected, the power saving of the air blowing means can be achieved in a state where the delivery of the fertilizer is stopped, and the fertilization operation can be quickly reopened after returning to the planting operation after the pressing operation. In other words, the air blowing means can be appropriately operated in accordance with the situation at the time of the seedling operation, and the power saving of the air blowing means can be achieved.

Further, a timing device for measuring an elapsed time from when the traveling speed shifting operation means is operated to the pressing position is provided, and the control device is configured to select a low air volume operation state by the selection operation means, According to the measurement result of the timing means, when the traveling speed shifting operation means is operated until the pressing position is passed for a predetermined time or longer, the air blowing means is changed from the operating state of the low air volume to the stopped state. .

According to this configuration, when the seedling operation is completed within the first set time, the planting operation can be quickly reopened, and when the first set time is not completed, the air blowing means can be automatically changed from the low air volume operation state. Become stopped. Therefore, the air supply means will not be unnecessarily actuated, and power saving can be achieved. Further, since the first set time can be set by the timer, the work speed and the work amount of the operator can be set to an arbitrary time.

And a lifting position detecting means for detecting the position of the planting portion, wherein the control device determines whether the position of the planting portion detected by the lifting position detecting means rises above a set height and rises to a set height or higher At this time, the air blowing means is changed to an operating state of a low air volume.

According to this configuration, in order to perform the work other than the press work, the planting portion is raised to interrupt the planting, the fertilizing operation, and the rice field end, etc., because the air volume of the air blowing means is lowered, so that the air blowing means can be achieved. The electrification operation after the operation can be quickly reopened.

And a timing means for measuring an elapsed time from when the traveling speed shifting operation means is operated to the pressing position, wherein the control means is based on the measurement result of the timing means When the second set time is set, the operation state of the air blowing means is not changed until the second set time is set, and when the second set time or longer is passed, the air blowing means is changed according to the selection of the selection means. The state of operation of the stop state or low air volume.

According to this configuration, the traveling speed shifting operation means is operated to the pressing position, and when the fertilizing operation is interrupted, the feeding means of the fertilizer applying means is also stopped, and the air blowing means can be actuated until the second set time elapses, and the discharge can be reliably retained. The fertilizer in the conveying pipe from the delivery means to the fertilization position. Therefore, it is possible to eliminate the possibility of clogging the conveyance pipe due to the residual fertilizer.

Hereinafter, the embodiment will be described using Figs. 9 to 18 .

As shown in Fig. 9, the rice transplanter 1 is provided with a control device 80 for controlling the operation of the blower 27 and the engine 14. However, the connection to the motor parts of the engine 14 or the like is omitted. A motor of the blower 27 is connected to the output side of the control device 80. On the other hand, on the input side of the control device 80, a selection switch 77, a timing device, that is, a timing device 81, and a lifting position detecting means, that is, a lifting position detecting sensor 82, and a micro switch are connected. 85. The neutral position sensor switch 86 and the walking state detecting means are the walking speed sensor 87.

The timer 81 measures the time t when the blower 27 is in the low air volume operation state, and the time t is equal to or longer than the first set time T1, that is, when the blower 27 is in the low air volume operation state, the first set time T1 is passed. In the case of the control device 80, a signal is sent. In the timer 81, a setter 81a for setting the first set time T1 in advance is connected.

Further, the elevation position detecting means, that is, the elevation position detecting sensor 82, is attached to the rotating portion of the top link 31 or the bottom link 32, and is constituted by a sensor such as a potentiometer.

Further, the walking state detecting means, that is, the traveling speed sensor 87, is attached to the transmission case 5. The traveling speed sensor 87 is for detecting the traveling speed of the rice transplanter 1.

Next, a method of controlling the blower 27 at the time of the seedling operation will be described using FIG.

First, the control device 80 determines whether or not the main shift operating lever 52 is located in the seedling position P3 (step S10). Here, when the main shift operating lever 52 is operated to the pressing position P3, since the micro switch 85 is switched from OFF to ON, the control device 80 determines that the main shift operating lever 52 is located. The seedling position is in P3. When the micro switch 85 is off (OFF), the control device 80 determines that the main shift operating lever 52 is not at the pressing position P3.

When it is determined that the main shift operating lever 52 is not located at the pressing position P3, the control device 80 repeats the determination of step S10.

When the main shift operating lever 52 is in the seedling position P3, the control device 80 determines whether or not the selection switch 77 is stopped (step S20). When the selection switch 77 is selected in the stop state, the control device 80 stops the blower 27 (step S30).

Next, the control device 80 determines whether or not the main shift operating lever 52 is located at the pressing position P3 (step S35). When the main shift operating lever 52 is in the pressing position P3, the control device 80 proceeds to step S35 again. When the main shift operating lever 52 is not at the pressing position P3, the control device 80 operates the blower 27 by the normal air volume (step S36), and proceeds to step S10 again.

With this configuration, when the main shift operating lever 52 is operated to the pressing position P3, the control device 80 stops the blower 27. Thereby, the power saving of the blower 27 can be effectively achieved, and the noise can be reduced.

In the case where the selection switch 77 is not selected in the stop state, that is, in the case where the selection state of the selection switch 77 is low, the main shift operation lever 52 is started by the timer 81. The measurement of the time t in the seedling position P3 (step S40) changes the number of rotations of the motor of the blower 27 to a low rotation, and causes the air volume of the air blower 27 to be a low air volume (step S45).

Next, the control device 80 determines whether or not the main shift operating lever 52 is located in the seedling position P3 (step S50). When the main shift operating lever 52 is not located at the pressing position P3, it is determined that the pressing operation has been returned to the planting operation, and the blower 27 is returned to the normal air volume (step S55), and the determination of step S10 is performed again. When the main shift operating lever 52 is in the seedling position P3, it is determined whether or not the time t is equal to or greater than the first set time T1 (step S60), and when the time t is shorter than the first set time T1, the control device 80 is The determination of step S50 is performed again.

When it is determined in step S60 that the time t is equal to or greater than the first set time T1, the timer 81 is reset (step S70), and the control device 80 moves the blower 27 to the stopped state (step S80).

Next, the control device 80 determines whether or not the main shift operating lever 52 is located in the seedling position P3 (step S85). When the main shift operating lever 52 is in the pressing position P3, the control device 80 repeats the step S85. When the main shift operating lever 52 is not at the pressing position P3, the control device 80 operates the blower 27 by the normal air volume (step S86), and proceeds to step S10 again.

With this configuration, when the main shift operating lever 52 is operated to the pressing position P3, the number of rotations of the motor of the blower 27 is set to be low rotation between the first set time T1, and the blower 27 is operated by the low air volume.

When the main shift operating lever 52 is operated to a position other than the pressing position P3 between the first set time T1, the control device 80 determines that the return to the work is performed, and returns the air volume of the blower 27 to the normal operation. Further, even if the state in which the main shift operating lever 52 is operated to the pressing position P3 is maintained while the first set time T1 has elapsed, the control device 80 moves the blower 27 to the stopped state.

Thereby, the power saving of the blower 27 can be achieved in a state where the delivery of the fertilizer is stopped, and the fertilizing operation can be quickly reopened as the return to the planting operation after the pressing operation. In other words, the blower 27 can be changed to an appropriate operating state in accordance with the situation at the time of the seedling operation, and the power saving of the blower 27 can be achieved.

When the work of pressing the seedlings or the like is completed, when the main shift operating lever 52 is operated from the pressing position P3 to the low speed forward position P2 and the moving position P5, the micro switch 85 is turned OFF, and the blower 27 is again actuated.

The control device 80 determines whether or not the position (height) of the planting portion 40 detected by the elevation position detecting sensor 82 is located above the predetermined position. When the position of the planting portion 40 is higher than the predetermined position, the control device 80 determines that the planting operation has not been performed yet, and changes the blower 27 to a low-rotation working state.

According to this configuration, when the planting unit 40 is raised and the fertilization operation is interrupted in order to perform work other than the seedling operation, the power saving of the blower 27 can be achieved, and the fertilizing operation can be quickly reopened after the operation.

When the main shift operating lever 52 is operated to the pressing position P3, the blower 27 may be changed to a normal air volume from the second set time T2.

Here, a method of controlling the blower 27 at the time of the seedling operation will be described using FIGS. 11 and 12. In the same manner as in the above-described embodiment, the same reference numerals will be given to the drawings, and the description will be omitted.

The timer 81 is a point measurement time t2 when the blower 27 is in a low air volume operation state, and the time t2 is equal to or longer than the second set time T2, that is, when the blower 27 is in the low air volume operation state, the second set time is passed. In the case of T2, a signal is sent to the control unit 80. In the timer 81, a setter 81a for setting the set time of the second set time T2 in advance is connected.

In step S10, when the main shift operating lever 52 is operated to the pressing position P3, the measurement of the time t2 at which the main shift operating lever 52 is located at the pressing position P3 is started (step S110), and it is judged whether or not the time t2 is the second. The time T2 or longer is set (step S120). In step S120, it is determined that the time t2 is shorter than the second set time T2, that is, when the second set time T2 has not elapsed, the determination of step S120 is performed again. In step S120, it is determined that the time t2 is equal to or greater than the second set time T2, that is, when the second set time T2 has elapsed, the processing is performed in the same manner as the foregoing embodiment after the step S20 and the step S20.

The second set time T2 is a time slightly shorter than the first set time T1, and the second set time T2 is that the fertilizer is discharged from the delivery mechanism 26 and is transported by the wind blown from the blower 27 until the fertilization position. The longer the transport tube 28 is, the longer it will be. In other words, the second set time T2 is the time from when the fertilizer is discharged to the application position, and if the second set time T2 elapses, the fertilizer does not remain in the carrier tube 28, and the clogging due to the curing of the fertilizer can be eliminated. The possibility of occurrence.

According to this configuration, when the fertilization operation is interrupted, the fertilizer remaining in the carrier pipe 28 of the fertilizer application device 22 can be discharged.

When the main shift operating lever 52 is operated to the neutral position P4, the blower 27 may be changed to a normal air volume.

Here, a method of controlling the blower 27 caused by the determination of whether or not the main shift operating lever 52 is operated to the neutral position P4 will be described using FIG. It is to be noted that the same reference numerals are given to the same parts as those of the above-described embodiment, and the description thereof will be omitted.

First, the control device 80 determines whether or not the main shift operating lever 52 is at the neutral position P4 (step S210). Here, when the main shift operating lever 52 is operated to the neutral position P4, since the neutral position sensor switch 86 is switched from OFF to ON, the control device 80 determines that the main shift operating lever 52 is Located in the neutral position P4. When the neutral position sensor switch 86 is off (OFF), the control device 80 determines that the main shift operating lever 52 is not at the neutral position P4.

When the control device 80 determines that the main shift operating lever 52 is not at the neutral position P4, the control device 80 determines that the step S210 is performed again.

When the main shift operating lever 52 is in the neutral position P4, the control device 80 determines whether or not the selection switch 77 is stopped (step S20). When the selection switch 77 is selected in the stop state, the control device 80 stops the blower 27 (step S30).

Next, the control device 80 determines whether or not the main shift operating lever 52 is at the neutral position P4 (step S235). When the main shift operating lever 52 is in the neutral position P4, the control device 80 proceeds to step S235 again. When the main shift operating lever 52 is not at the neutral position P4, the control device 80 operates the blower 27 by the normal air volume (step S36), and proceeds to step S210 again.

With this configuration, when the main shift operating lever 52 is operated to the neutral position P4, the control device 80 stops the blower 27. Thereby, the power saving of the blower 27 can be effectively achieved, and the noise can be reduced.

In step S20, if the stop state of the selection switch 77 is not selected, that is, when the operation state of the low-volume amount is selected in the selection switch 77, the measurement of the main shift operating lever 52 is started by the timer 81. It is time t of the neutral position P4 (step S40), and the number of rotations of the motor of the air blower 27 is changed to low rotation, and the air volume of the air blower 27 is changed to the low air volume (step S45).

Next, the control device 80 determines whether or not the main shift operating lever 52 is at the neutral position P4 (step S250). When the main shift operating lever 52 is not at the neutral position P4, it is determined that the pressing operation is returned from the pressing operation to the planting operation, and the blower 27 is returned to the normal air volume (step S55), and the determination in step S210 is performed again. When the main shift operating lever 52 is at the neutral position P4, it is determined whether or not the time t is equal to or greater than the first set time T1 (step S60), and when the time t is shorter than the first set time T1, the control device 80 performs again. The judgment of step S250.

When it is determined in step S60 that the time t is equal to or greater than the first set time T1, the timer 81 is reset (step S70), and the control device 80 moves the blower 27 to the stopped state (step S80).

Next, the control device 80 determines whether or not the main shift operating lever 52 is at the neutral position P4 (step S285). When the main shift operating lever 52 is in the neutral position P4, the control device 80 proceeds to step S285 again. When the main shift operating lever 52 is not at the neutral position P4, the control device 80 operates the blower 27 by the normal air volume (step S86), and proceeds to step S210 again.

According to this configuration, when the main shift operating lever 52 is operated to the neutral position P4, the number of rotations of the motor of the blower 27 is set to be low rotation between the first set time T1, and the blower 27 is operated by the low air volume.

When the main shift operating lever 52 is operated to a position other than the neutral position P4 between the first set times T1, the control device 80 determines that the return has been returned to the work, and returns the air volume of the blower 27 to the normal operation. Further, even if the main shift operating lever 52 is maintained in the state of being operated to the neutral position P4 after the first set time T1, the control device 80 moves the blower 27 to the stopped state.

Thereby, the power saving of the blower 27 can be achieved in a state where the delivery of the fertilizer is stopped, and the fertilization operation can be quickly reopened as the return to the planting operation after the stop of the travel. In other words, the blower 27 can be changed to a proper operating state in response to the change in the state at the time of the stop of travel, and the power saving of the blower 27 can be achieved.

When the main shift operating lever 52 is operated from the neutral position P4 to the low speed forward position P2 or the shift position P5, the neutral position sensor switch 86 is turned OFF, and the blower 27 is again actuated.

When the main shift operating lever 52 is operated to the neutral position P4, the blower 27 may be changed to a normal air volume from the operation until the second set time T2 elapses.

Here, a method of controlling the blower 27 caused by the determination of whether or not the main shift operating lever 52 is operated to the neutral position P4 will be described using FIGS. 14 and 15. It is to be noted that the same reference numerals are given to the same parts as those of the above-described embodiment, and the description thereof will be omitted.

The timer 81 is a point measurement time t2 when the blower 27 is in a low air volume operation state, and the time t2 is equal to or longer than the second set time T2, that is, when the blower 27 is in the low air volume operation state, the second set time is passed. In the case of T2, a signal is sent to the control unit 80. In the timer 81, a setter 81a for setting the set time of the second set time T2 in advance is connected.

When the main shift operating lever 52 is operated to the neutral position P4 in step S210, the measurement of the main shift operating lever 52 at the time t2 at the neutral position P4 is started (step S310), and it is determined whether or not the time t2 is equal to or longer than the second set time T2. (Step S320). In step S320, the time t2 is shorter than the second set time T2, that is, when it is determined that the second set time T2 has not elapsed, the determination of step S320 is performed again. In step S320, it is determined that the time t2 is equal to or greater than the second set time T2, that is, when the second set time T2 has elapsed, the processing is performed in the step S20, and after the step S20, the same control as in the third embodiment is performed.

The second set time T2 is a time slightly shorter than the first set time T1, and the second set time T2 is that the fertilizer is discharged from the delivery mechanism 26 and is transported by the wind blown from the blower 27 until the fertilization position. The longer the transport tube 28 is, the longer it will be. In other words, the second set time T2 is the time from when the fertilizer is discharged to the application position, and if the second set time T2 elapses, the fertilizer does not remain in the carrier tube 28, and the clogging due to the curing of the fertilizer can be eliminated. The possibility of occurrence.

According to this configuration, when the fertilization operation is interrupted, the fertilizer remaining in the carrier pipe 28 of the fertilizer application device 22 can be discharged.

When the traveling speed sensor 87 is determined to be in the traveling stop state, the blower 27 may be changed to a normal air volume.

Here, a method of controlling the blower 27 caused by the discrimination in the traveling stop state will be described using FIG. It is to be noted that the same reference numerals are given to the same parts as those of the above-described embodiment, and the description thereof will be omitted.

First, the control device 80 determines whether or not the vehicle is in the traveling stop state based on the speed detected by the traveling speed sensor 87 (step S410). Here, the case where the speed detected by the traveling speed sensor 87 is 0 is defined as the running stop state, and the other state is defined as the running state.

When it is determined that the control device 80 is in the walking state, the control device 80 repeats the determination of step S410.

When it is determined that the vehicle is in the traveling stop state, the control device 80 determines whether or not the selection switch 77 is stopped (step S20). When the selection switch 77 is selected in the stop state, the control device 80 stops the blower 27 (step S30).

Next, the control device 80 determines whether or not the traveling is stopped (step S435). In the case of the traveling stop state, the control device 80 proceeds to step S435 again. Further, in the case of the traveling state, the control device 80 operates the blower 27 by the normal air volume (step S36), and proceeds to step S410 again.

With this configuration, the control device 80 stops the blower 27 when the traveling is stopped. Thereby, the power saving of the blower 27 can be effectively achieved, and the noise can be reduced.

In step S20, if the stop state of the selection switch 77 is not selected, that is, when the operation state of the low-volume amount is selected in the selection switch 77, the measurement is started by the timer 81 in the stop state. At time t (step S40), the number of rotations of the motor of the blower 27 is changed to a low rotation, and the air volume of the air blower 27 is changed to a low air volume (step S45).

Next, the control device 80 determines whether or not the traveling is stopped (step S450). In the case of the walking state, it is determined that the planting operation is reset, the blower 27 is returned to the normal air volume (step S55), and the determination of step S410 is performed again. In the case of the traveling stop state, it is determined whether or not the time t is equal to or greater than the first set time T1 (step S60), and when the time t is shorter than the first set time T1, the control device 80 determines that the step S450 is performed again.

When it is determined in step S60 that the time t is equal to or greater than the first set time T1, the timer 81 is reset (step S70), and the control device 80 moves the blower 27 to the stopped state (step S80).

Next, the control device 80 determines whether or not the traveling is stopped (step S485). In the case of the traveling stop state, the control device 80 repeats the step S485. Further, in the case of the traveling state, the control device 80 operates the blower 27 by the normal air volume (step S86), and proceeds to step S410 again.

With this configuration, when the traveling is stopped, the number of rotations of the motor of the blower 27 is set to be low rotation between the first set time T1, and the blower 27 is operated by the low air volume.

When the first set time T1 is in the running state, the control device 80 determines that the operation is returned to the operation, and returns the air volume of the blower 27 to the normal operation. Further, even if the traveling stop state is maintained until the first set time T1 elapses, the control device 80 moves the blower 27 to the stopped state.

Thereby, the power saving of the blower 27 can be achieved in a state where the delivery of the fertilizer is stopped, and the fertilization operation can be quickly reopened as the return to the planting operation after the stop of the travel. In other words, the blower 27 can be changed to a proper operating state in response to the change in the state at the time of the stop of travel, and the power saving of the blower 27 can be achieved.

When it is in the running state, the blower 27 is again actuated.

In the case of the traveling stop state, the blower 27 may be changed to a normal air volume from the time point until the second set time T2 elapses.

Here, a method of controlling the blower 27 caused by the discrimination in the traveling state will be described using FIGS. 17 and 18. It is to be noted that the same reference numerals are given to the same parts as those of the above-described embodiment, and the description thereof will be omitted.

The timer 81 is a point measurement time t2 when the blower 27 is in a low air volume operation state, and the time t2 is equal to or longer than the second set time T2, that is, when the blower 27 is in the low air volume operation state, the second set time is passed. In the case of T2, a signal is sent to the control unit 80. In the timer 81, a setter 81a for setting the set time of the second set time T2 in advance is connected.

When the traveling stop state is reached in step S410, the measurement of the time t2 in the traveling stop state is started (step S510), and it is determined whether or not the time t2 is equal to or greater than the second set time T2 (step S520). In step S520, it is determined that the time t2 is shorter than the second set time T2, that is, when the second set time T2 has not elapsed, the determination of step S520 is performed again. In step S520, it is determined that the time t2 is equal to or greater than the second set time T2, that is, when the second set time T2 has elapsed, the processing is performed in the step S20, and after the step S20, the same control as in the foregoing embodiment is performed.

The second set time T2 is a time slightly shorter than the first set time T1, and the second set time T2 is that the fertilizer is discharged from the delivery mechanism 26 and is transported by the wind blown from the blower 27 until the fertilization position. The longer the transport tube 28 is, the longer it will be. In other words, the second set time T2 is the time from when the fertilizer is discharged to the application position, and if the second set time T2 elapses, the fertilizer does not remain in the carrier tube 28, and the clogging due to the curing of the fertilizer can be eliminated. The possibility of occurrence.

According to this configuration, when the fertilization operation is interrupted, the fertilizer remaining in the carrier pipe 28 of the fertilizer application device 22 can be discharged.

As described above, the planting unit 40 is connected to the rice transplanter 1 of the traveling unit 10 so as to be movable up and down, and includes a main shift operating lever 52 operable to a plurality of shifting operation positions including the seedling position P3; and detecting the main shifting operation The rod 52 is a micro switch 85 located at the seedling position P3; and a hopper 25 for accommodating the fertilizer, and a delivery mechanism 26 for discharging a predetermined amount of fertilizer each time disposed in the lower portion of the hopper 25, and transporting the discharged fertilizer until fertilization The fertilizing device 22 of the blower 27 at the position; and the selection of one of the operating states of the blower 27 when the main shift operating lever 52 is operated to the pressing position P3 is selectively switched to the stopped state or the low air volume operating state a switch 77; and detecting whether the rice transplanter 1 is the walking speed sensor 87 in the walking state; and controlling the actuation of the blower 27, the micro-switch 85 is detected that the main shift operating lever 52 is operated to the pressing position When the P3 or the neutral position P4 is detected by the traveling speed sensor 87 in the traveling stop state, the blower 27 is changed to the stopped state or the low air volume according to the selection of the selection switch 77. Control device 80.

According to this configuration, the operating state of the blower 27 of the fertilizer application device 22 at the time of the seedling operation is an operation state in which the stop state or the low air volume is selectively selected. Therefore, when the stop state is selected, the power saving of the blower 27 can be effectively achieved. On the other hand, when the operating state of the low air volume is selected, the power saving of the blower 27 can be achieved in a state where the fertilizer is stopped, and the fertilizing operation can be quickly reopened after the pressing operation to return to the planting operation. In other words, the blower 27 can be changed to an appropriate operating state in accordance with the situation at the time of the seedling operation, and the power saving of the blower 27 can be achieved.

Further, the timing device 81 is provided to measure the elapsed time t from the time when the main shift operating lever 52 is operated to the pressing position P3, and the control device 80 is controlled by the selection switch 77 to select the low air volume. The measurement result of the timer 81 is the comparison between the elapsed time t and the first set time T1, and when the main shift operating lever 52 is operated to the pressing position P3, when the first set time T1 or more is set in advance, the blower 27 is used. Changed from the operating state of the low air volume to the stopped state.

According to this configuration, when the pressing operation is not completed within the predetermined time, the blower 27 can be changed from the operating state of the low air volume to the stopped state. Therefore, the blower 27 does not have unnecessary operations, and power saving can be achieved.

Further, the elevation position detecting sensor 83 for detecting the position of the planting portion 40 is provided, and the control device 80 determines whether or not the position of the planting portion 40 detected by the lifting position detecting sensor 83 rises to the set height. As described above, if it is detected, the blower 27 is changed to an operating state of a low air volume.

According to this configuration, when the planting unit 40 is raised and the fertilization operation is interrupted in order to perform work other than the seedling operation, the power saving of the blower 27 can be achieved, and the fertilizing operation can be quickly reopened after the operation.

Further, the timing device 81 is provided to measure the elapsed time t2 from the time when the main shift operating lever 52 is operated to the pressing position P3, and the control device 80 is the measurement result of the timing 81, that is, the elapsed time t2 and the second setting. The time T2 is compared, when the main shift operating lever 52 is operated to the pressing position P3, until the second set time T2 elapses, the operating state of the blower 27 is not changed, and when the second set time T2 or more is passed, the blower 27 is used. The operation state of the stop state or the low air volume is changed according to the selection of the selection switch 77. The second set time T2 here is set to be shorter than the first set time T1.

According to this configuration, even if the main shift operating lever 52 is operated to the pressing position P3, the feeding mechanism 26 of the fertilizer application device 22 is stopped, and the blower 27 is not stopped in the field (immediately) until the second set time T2 elapses. By continuing the operation, the fertilizer remaining in the conveyance pipe 28 from the delivery mechanism 26 to the application position can be reliably discharged. Therefore, the possibility of clogging the transport tube 28 due to the residual fertilizer can be eliminated.

Next, the body frame 11 of the traveling portion 10 will be described.

The conventional technique is to raise and lower the planting section by the lifting mechanism and maintain the planting section at a predetermined height.

In such a conventional rice transplanter, the planting portion is raised to a predetermined height by the elevating mechanism, and when it is held at the height, the vibration is transmitted from the wheel to the planting portion. This vibration will scratch the planting part and will become an impact from the planting part. Moreover, the impact from the planting portion becomes a hydraulic cylinder that is applied to the lifting mechanism with a sharp force. Here, a technique of a rice transplanter that absorbs the impact (force) by arranging a buffer spring in a hydraulic cylinder of the elevating mechanism is known.

However, in a rice transplanter equipped with a buffer spring, it is necessary to arrange a space for the buffer spring, and the larger the planting portion, the larger the buffer spring to be disposed. Here, a technique of absorbing a shock (force) by an accumulator connected to a hydraulic cylinder is known (for example, Japanese Laid-Open Patent Publication No. 2003-79203 and Japanese Patent No. 3885162).

However, in such a rice transplanter, since the accumulator is connected to the hydraulic cylinder through the pipe, there is a problem that a time difference occurs until the accumulator absorbs the impact (force). Further, since the accumulator is connected to the hydraulic cylinder through the pipe, the pipe is subjected to the oil supply resistance of the actuating oil, and there is a problem that the above-described impact (force) cannot be efficiently absorbed.

In view of the above problems, it is possible to provide a rice transplanter in which the force is instantaneously and efficiently applied even when the impact is generated from the planting portion to the hydraulic cylinder in a state where the planting portion is held at a predetermined height. absorb.

In other words, the rice transplanter includes: a planting portion that is vertically movable through a lifting link mechanism at a rear portion of the traveling body, and a hydraulic cylinder that is coupled to the lifting and lowering link mechanism and that moves the planting portion up and down, and The impact of the planting portion is applied to a pressure absorbing accumulator on the hydraulic cylinder, and the accumulator is connected to the oil chamber on the rising side of the hydraulic cylinder and is attached to the hydraulic cylinder.

According to this configuration, the distance between the hydraulic cylinder and the accumulator can be shortened, the reactivity is improved, and when the planting portion is held at a predetermined height, the force applied to the hydraulic cylinder by the impact from the planting portion can be instantaneous and efficient. The ground is absorbed. Therefore, the occurrence of oil leakage, damage, and the like of the hydraulic cylinder generated by the force can be reduced. Further, since there is no piping between the hydraulic cylinder and the accumulator, the piping can be simplified, and assembly, maintenance, and the like can be easily performed, and cost reduction can be achieved.

Further, the accumulator is attached to a cap portion rotatably attached to the cylinder tube in a piston rod side (a side on which the piston rod is provided) of the cylinder tube in the hydraulic cylinder.

According to this configuration, the attachment of the accumulator in the hydraulic cylinder and the processing of the mounting portion of the accumulator can be easily performed. Further, since the accumulator is rotatably mounted together with the cap portion of the hydraulic cylinder, the mounting position of the accumulator in the hydraulic cylinder can be easily changed. Therefore, the accumulator does not interfere with the body frame and other peripheral devices during expansion and contraction of the hydraulic cylinder.

Further, the accumulator includes a connection portion for connecting to the hydraulic cylinder, and the hydraulic cylinder side of the oil passage that connects the hydraulic cylinder and the switching device for expansion and contraction of the hydraulic cylinder, Connected to the aforementioned connecting portion.

According to this configuration, the structure for attaching the accumulator to the hydraulic cylinder can be easily achieved, and the number of parts can be reduced.

Hereinafter, an embodiment will be described using Figs. 19 to 27 .

As shown in FIGS. 19 and 20, the vehicle body frame 11 is a main structure of the traveling portion 10, and includes a front frame 120, a rear frame 130, a piping frame 140, and a transmission case 5 which also serves as a frame, and The rear drive shaft case 7, the connection frame 141, and the like are formed.

The front frame 120 includes a right side frame 121 and a left side frame 122 that are disposed in the front-rear direction, and a front side base frame 123 and a rear side base frame 124 that are disposed in the left-right direction.

The front frame 120 is formed by arranging the front side base frame 123 and the rear side base frame 124 between the right side frame 121 and the left side frame 122 to form a plan view square frame shape. Further, in the front frame 120, the engine 14 is fixed to the front base frame 123 and the rear base frame 124 via the fixing brackets 125, 125, 125, and 125. Further, in the front frame 120, the rear end pipe frame 140 of the right side frame 121 and the left side frame 122 is coupled. In the piping frame 140, support members 126, 126 are provided. A front drive axle box 6 is fixed to the support members 126, 126. The front drive axle box 6 is fixed to both sides of the transmission case 5.

The rear frame 130 includes a right rising frame 131, a left rising frame 132, a rear piping frame 133, a support frame 134, and the like.

In the rear frame 130, between the pipe frame 140 and the rear pipe frame 133, the right ascending frame 131 and the left ascending frame 132 are connected in a slightly parallel manner. Further, in the rear frame 130, a support frame 134 is suspended from the left and right central portions of the rear side pipe frame 133, and the rear drive shaft case 7 is coupled to the lower end of the support frame 134. Further, in the rear frame 130, a fuel tank 90 is disposed between the right ascending frame 131 and the left ascending frame 132.

The support frame 134 is composed of a pair of left and right upper and lower frames 134a and 134a extending downward from the rear side pipe frame 133, and left and right frames 134b connected to the lower end portions of the upper and lower frames 134a and 134a and extending in the left-right direction. Composition.

Further, as shown in FIGS. 20 and 21, the transmission case 5 and the rear drive shaft case 7 are coupled by the joint frame 141. The connecting frame 141 is extended in the front-rear direction in the center of the left and right sides of the body below the fuel tank 90. The joint frame 141 is a frame to be regulated, and a drive shaft is housed therein so that power can be transmitted from the transmission case 5 to the rear drive shaft case 7 at the rear thereof. On the rear portion of the joint frame 141, a cylinder mount 142 is fixed. The head side of the lift cylinder 34 to be described later is supported by the cylinder mount 142. Further, a transmission shaft 143 is provided on the left side of the connection frame 141.

As described above, in the rear frame 130, the fuel tank 90 and the lift cylinder 34 are disposed in a portion surrounded by the driver's seat 19, the right ascending frame 131, the left ascending frame 132, and the connecting frame 141.

As shown in Figs. 21 and 22, the rear drive axle box 7 is formed into a gate shape in plan view. The rear drive axle case 7 includes a right gear case portion 7a and a left gear case portion 7b at both end portions thereof, and a gate-shaped space portion 7c is formed between the right gear case portion 7a and the left gear case portion 7b.

As shown in Fig. 22, the upper portions of the right gear case portion 7a and the left gear case portion 7b are provided with connection portions 7d and 7d, respectively. The left and right frames 134b of the support frame 134 are fixed to the joint portions 7d and 7d.

Next, the elevating mechanism 30 will be described.

The elevating mechanism 30 is a mechanism for elevating and lowering the planting portion 40, and is provided between the traveling portion 10 and the planting portion 40 as described above. The elevating mechanism 30 is composed of a lifting link mechanism 33 including a top link 31 and a bottom link 32, and a lifting cylinder 34. The elevating mechanism 30 drives the lifting and lowering link mechanism 33 in the vertical direction by expanding and contracting the elevating cylinder 34 to raise and lower the planting portion 40.

As shown in Figs. 22 and 23, the tip end of the top link 31 is coupled to the upper portion of the upper and lower frames 134a of the support frame 134 through the support shaft 31a. The rear end portion of the top link 31 is pivotally supported on the upper portion of the support frame 38 provided on the front side of the planting transmission case 46 (first drawing).

The bottom link 32 includes a main link 32a, a post 32b, and a reinforcing link 32c. A post 32b is erected at the front end of the main link 32a. A reinforcing link 32c is coupled between the upper portion of the column 32b and the rear end of the main link 32a. The rigidity of the bottom link 32 is increased by the reinforcing link 32c being coupled. Further, the front end of the bottom link 32 is pivotally supported by the left and right center portions of the rear drive shaft case 7 through the link support member 37. Further, the rear end of the bottom link 32 is pivotally supported at the lower portion of the support frame 38.

This lifting cylinder 34 will be described in detail.

As shown in Figs. 22 and 23, the lift cylinder 34 is an actuator that is composed of a hydraulic cylinder and that raises and lowers the planting portion 40. The lift cylinder 34 is composed of a cylinder tube 35, a piston rod 36, and a piston (not shown).

The piston rod 36 has one end inserted into the cylinder tube 35 and fixed with the aforementioned piston. Further, the other end of the piston rod 36 is coupled to the bottom link 32. Further, in the lift cylinder 34, the other end of the piston rod 36 may be coupled to the top link 31, and the planting portion 40 may be raised and lowered.

The inside of the cylinder tube 35 is separated into two chambers on the rod chamber side and the head chamber side by the aforementioned piston. In the present embodiment, the oil chamber on the rod chamber side is the oil chamber 34a which is the rising side of the lift cylinder 34 (Fig. 25).

And the cylinder tube 35 has one end closed by the head side cap portion 35a.

The head side cap portion 35a is rotatably provided on the rear surface of the coupling frame 141 through the cylinder mount 142.

Further, the other end of the cylinder tube 35 is closed by the rod side cap portion 35b.

A piston rod 36 is inserted through the rod side cap portion 35b.

Further, the lift cylinder 34 may be configured such that the piston rod 36 is located on the side of the vehicle body frame 11 and the cylinder tube 35 is located on the side of the lift link mechanism 33. That is, the tip end of the piston rod 36 is rotatably supported on the rear portion of the joint frame 141 through the cylinder mount 142, and the head side cap portion 35a of the cylinder tube 35 is connected to the bottom of the lift link mechanism 33. The configuration in which the rods 32 are coupled is also possible.

Further, in the lift cylinder 34, an accumulator 150 is inserted. The accumulator 150 is a hydraulic pressure accumulator. In the present embodiment, as shown in Fig. 24, the accumulator 150 is composed of an accumulator body 150a and an accumulator connecting portion 150b. The accumulator body 150a is a member having a substantially spherical shape, and has a diaphragm or the like inside. However, the shape of the accumulator body 150a is not limited to a slightly spherical body.

The accumulator connecting portion 150b is a portion that is inserted into the lift cylinder 34.

A pipe connecting portion 152 is provided in the head side cap portion 35a. Further, the rod side cap portion 35b is provided with a pipe connecting portion 151 and an accumulator connecting portion 150b.

The rod side cap portion 35b is rotatably attached to the cylinder tube 35. Specifically, a female screw is formed on the inner circumference of the rod side cap portion 35b, and a male screw is formed on the outer circumference of the end portion of the cylinder tube 35. Further, the lock nut 35c and the rod side cap portion 35b can be screwed and fixed to the male screw of the cylinder tube 35. The position at which the rod side cap portion 35b is screwed to the fixed position can be arbitrarily changed by adjusting the tightening position of the lock nut 35c. That is, after the rod side cap portion 35b is screwed to the cylinder tube 35 by a predetermined amount, the lock nut 35c is screwed to the rod side cap portion 35b side at a position toward the desired (predetermined) direction of the accumulator 150. The rod side cap portion 35b is fixed to the cylinder tube 35. Further, the rod side cap portion 35b and the cylinder tube 35 are sealed by a sealing material (not shown).

By configuring the rod side cap portion 35b and the cylinder tube 35 in this manner, when the planting portion 40 is moved up and down, when the accumulator 150 and the pipe may interfere with the vehicle body frame 11 and other peripheral devices, the rod side cap portion 35b is changed. In the tightening position, the accumulator 150 and the pipe can be fixed at positions that do not interfere with the body frame 11 and other peripheral devices.

The attachment of the cylinder tube 35 of the rod side cap portion 35b is not limited to the above-described screw fastening, and the rod side cap portion 35b may be rotatably attached to the cylinder tube 35.

Further, in the present embodiment, the accumulator 150 is attached to the lower side of the rod side cap portion 35b. However, since the rice transplanter 1 is downsized and the peripheral device is changed, the accumulator 150 may be rearward. When the drive shaft case 7 or the like is interfered, the accumulator 150 may be attached to the side surface or the upper surface.

When the lift cylinder 34 is configured such that the lift cylinder 34 is extended to raise the planting portion 40, the accumulator 150 is attached to the head side cap portion 35a.

The pipe connecting portion 151 is a portion for connecting the oil feed path 186 to the lift cylinder 34. The pipe connection portion 151 is connected to the lift cylinder side 186a of the oil feed path 186.

The oil feed path 186 is a connection lift cylinder 34 and a lift valve unit 174 for expanding and contracting the lift cylinder 34 (Fig. 25).

When the lift valve unit 174 passes through the oil feed path 186 and the pipe connection portion 151 to supply oil to the rod side chamber of the cylinder tube 35, the lift cylinder 34 is reduced, and the planting portion 40 is raised. At this time, the operating oil in the head side chamber of the cylinder tube 35 is supplied from the pipe connecting portion 152 to the inside of the transmission case 5 functioning as the operating oil sump. Therefore, in the lift cylinder 34, the rod chamber side is an oil chamber that is the rising side of the lift cylinder 34 (Fig. 25). When the lift valve unit 174 is switched to the lower side, the oil in the rod side chamber of the cylinder tube 35 is supplied to the transmission case 5 through the oil feed path 186, and the lift cylinder 34 is extended and the planting portion 40 is lowered.

The accumulator 150 is inserted and directly mounted in the oil chamber 34a (Fig. 25) on the rising side of the lift cylinder 34. That is, in the present embodiment, the accumulator 150 is directly attached to the rod side cap portion 35b of the cylinder tube 35. At this time, the accumulator connecting portion 150b of the accumulator 150 is inserted into the rod side cap portion 35b at a position different from the pipe connecting portion 151. The accumulator 150 is inserted into the oil chamber 34a (Fig. 25) on the rising side of the lift cylinder 34, and the accumulator 150 is attached to the oil chamber on the oil feed side of the pressure oil, and the accumulator 150 is provided. The reactivity can be improved.

In this manner, the accumulator 150 directly connects the accumulator connection portion 150b to the lift cylinder 34 without passing through another pipe or the like between the lift cylinder 34 and the like. Thereby, since the distance between the lift cylinder 34 and the accumulator 150 is shortened, the reactivity of the accumulator 150 is improved. Further, when the planting portion 40 is raised up to a predetermined height, and the rice transplanter 1 is moved to an evil road or the like at this height, the impact is transmitted to the planting portion 40, but the accumulator 150 is directly connected. In the lift cylinder 34, the force applied to the lift cylinder 34 by the impact from the planting portion 40 can be stably and efficiently absorbed by the accumulator 150, and the planting portion 40 can be stably supported. .

Next, the hydraulic pipe 170 for raising and lowering of the planting part 40 is demonstrated.

As shown in Fig. 25, the hydraulic pipe 170 for lifting and lowering of the planting portion 40 is composed of a flow control valve 171, a power steering unit 172, a horizontal valve unit 173, and a lift valve unit 174.

In the hydraulic oil pipe 170 for lifting and lowering, the hydraulic oil that is the transmission case 5 that drives the oil sump is supplied to the flow control valve 171 through the hydraulic pressure pipe 176 through the hydraulic pump 175 driven by the engine 14. . Further, the flow control valve 171 distributes the hydraulic oil supplied from the hydraulic pump 175 to the high pressure oil passage 177 and the low pressure oil passage 178.

In the high pressure oil passage 177, a power steering unit 172 and a lift valve assembly 174 are connected, and a horizontal valve assembly 173 is connected to the low pressure oil passage 178.

The power steering assembly 172 switches the steering valve 180 that is operated toward the cylinder 179 by steering the handlebar 18.

The horizontal valve unit 173 is operated by the horizontal operation solenoid valve 181, and the left and right tilt postures of the planting unit 40 are controlled by this operation. Or the planting portion 40 is controlled to its level by the detected value from the ground sensor.

The lift valve assembly 174 is a switching means for switching the expansion and contraction of the lift cylinder 34. The lift valve assembly 174 switches the control valve 185 by raising the electromagnetic coil 183 and the descending electromagnetic coil 184 to expand and contract the lift cylinder 34. That is, the control signal is applied to the rising electromagnetic coil 183 or the lowering electromagnetic coil 184, and the excitation is performed, and the valve is switched and the lifting control of the planting portion 40 is performed.

Further, the lift valve unit 174 includes a stop valve 187 in the oil feed path 186 that connects the control valve 185 and the pipe connection portion 151 of the lift cylinder 34. In the lift valve assembly 174, the planting portion 40 can be stopped at an arbitrary height by switching the stop valve 187 to the closed state.

In the lift cylinder 34, the supply of the hydraulic oil is controlled by the lift valve unit 174, and is supplied from the pipe connecting portion 151 through the oil feed path 186. Further, the operating oil in the lift cylinder 34 is discharged from the pipe connecting portion 152, passes through the drum return oil passage 188, and is returned to the transmission case 5.

As described above, the rice transplanter 1 of the present embodiment includes the planting portion 40 that is vertically movable through the lift link mechanism 33 at the rear portion of the traveling portion 10 (the traveling body), and is coupled to the lift link mechanism 33 and is planted. The lift cylinder 34 (hydraulic cylinder) that lifts and lowers the portion 40 and the accumulator 150 for absorbing the force applied to the lift cylinder 34 (hydraulic cylinder) by the impact from the planting portion 40, the accumulator 150, It is connected to the oil chamber on the rising side of the lift cylinder 34 (hydraulic cylinder), and is attached to the lift cylinder 34 (hydraulic cylinder).

By configuring the rice transplanter 1 in this way, the distance between the lift cylinder 34 (oil pressure cylinder) and the accumulator 150 can be shortened, and the force exerted on the lift cylinder 34 (oil pressure cylinder) by the impact from the planting portion 40 can be instantaneous. And absorbed efficiently. Therefore, the occurrence of oil leakage, damage, and the like of the lift cylinder 34 (hydraulic cylinder) generated by the force can be reduced. Further, since there is no piping between the lift cylinder 34 (hydraulic cylinder) and the accumulator 150, piping can be simplified, assembly, maintenance, and the like can be easily performed, and cost reduction can be achieved.

Further, in the rice transplanter 1 of the present embodiment, the accumulator 150 is on the piston rod 36 side (the protruding side of the piston rod 36) of the cylinder tube 35 in the lift cylinder 34 (hydraulic cylinder), and is mounted on the cylinder tube 35. A rod side cap portion 35b that is rotatably mounted.

By configuring the rice transplanter 1 in this manner, the attachment of the accumulator 150 in the lift cylinder 34 (hydraulic cylinder) and the processing of the mounting portion of the accumulator 150 can be easily performed. Further, since the accumulator 150 rotates together with the rod side cap portion 35b of the lift cylinder 34 (hydraulic cylinder), the attachment position of the accumulator 150 in the lift cylinder 34 (hydraulic cylinder) can be easily changed. Therefore, the accumulator 150 does not interfere with the vehicle body frame 11 and other peripheral devices during expansion and contraction of the lift cylinder 34 (hydraulic cylinder).

Further, as shown in FIGS. 26 and 27, the lift cylinder side 186a of the oil feed path 186 may be connected to the accumulator connection portion 250b attached to the rod side cap portion 235b. In other words, the accumulator connecting portion 250b is provided with a pipe connecting portion 251 for connecting the oil feed path 186.

In this way, the pipe connecting portion 251 for connecting the oil feed path 186 is integrally provided in the accumulator connecting portion 250b. Since the cylinder tube 35 of the lift cylinder 34 is not required and the working oil inlet portion is separately provided, the lift cylinder is provided. The number of parts of the 34 can be reduced. Further, since the accumulator 150 and the oil feed path 186 can be simultaneously mounted on the lift cylinder 34, the structure for attaching the accumulator 150 and the oil feed path 186 to the lift cylinder 34 can be simplified.

As described above, in the rice transplanter 1 of the present embodiment, the accumulator 150 has an accumulator connecting portion 150b (connecting portion) for connection to the elevating cylinder 34 (hydraulic cylinder), and is connected: the elevating cylinder 34 (oil) a pressure cylinder) and a lift cylinder (hydraulic cylinder) side 186a of the oil feed path 186 of the lift valve assembly 174 (switching means) for switching the lift cylinder 34 (hydraulic cylinder), and an accumulator connection portion 150b ( Connection)) Connector.

By configuring the rice transplanter 1 in this way, the structure for attaching the accumulator 150 and the oil feed path 186 to the lift cylinder 34 (hydraulic cylinder) can be simplified, and the number of parts can be reduced.

[Industry use possibility]

The invention can be applied to a rice transplanter.

1. . . rice transplanter

5. . . Transmission case

6. . . Front drive axle box

7. . . Rear drive axle box

7a. . . Right gearbox

7b. . . Left gearbox

7c. . . Gate space

7d. . . Linkage

8. . . pillar

9. . . Hand shaft

10. . . Walking department

11. . . Body skeleton

12. . . Front wheel

13. . . Rear wheel

14. . . engine

15. . . Hood

16. . . Body cover

17. . . dash board

17a. . . Instrument panel (top of dashboard 17)

17b. . . Depression

18. . . Fuck to the handle

18a. . . Handle the face (the face perpendicular to the axis direction of the handle shaft 9)

19. . . Driver's seat

20. . . Pillar frame

twenty one. . . Driving operation department

twenty two. . . Fertilizer application

twenty three. . . Installation frame

twenty four. . . Prepared seedling stage

25. . . hopper

26. . . Delivery agency

27. . . Blower

28. . . Transport tube

30. . . Lifting mechanism

31. . . Top link

31a. . . Support shaft

32. . . Bottom link

32a. . . Main connecting rod

32b. . . column

32c. . . Reinforcing link

33. . . Lifting linkage

34. . . Lifting cylinder

34a. . . Oil room

35. . . Cylinder tube

35a. . . Head side cap

35b. . . Rod side cap

35c. . . Lock nut

36. . . Piston rod

37. . . Link support member

38. . . Support frame

40. . . Planting department

41. . . Seedling stage

42. . . Center buoy

43. . . Side buoy

44. . . Rotating box

45. . . Planting claw

46. . . Planting gearbox

47. . . Seedling longitudinal feeding belt

48. . . Pull-line marking

49. . . Planting frame

50. . . Display panel

50a. . . Display panel surface (operating panel surface of display panel 50)

50b. . . Left display

50c. . . Right display

50d. . . Central display

51. . . Planting operation panel

51a. . . Planting operation panel (operation panel of planting operation panel 51)

52. . . Main shift lever

52a. . . Guide groove

52b. . . ditch

52c. . . ditch

52d. . . ditch

53. . . Fixed speed lever

54. . . Hydraulic planting lever

55. . . Sensitivity control button

56. . . Buzzer stop switch

57. . . Engine key insertion port

58. . . Planting settings control

59. . . Hood release switch

60. . . Line stop operation component

61. . . Automatic line switch

62. . . Line stop switch

63. . . Line stop switch

64. . . Line stop switch

65. . . Line stop switch

71. . . Speed selector switch

72. . . Combination Switch

73. . . Oil pressure stop switch

74. . . Planting tilt setter

75. . . Rice field condition switch

76. . . Rocker switch

77. . . switch

78. . . Speed shift pedal

79. . . Brake pedal

80. . . Control device

81. . . Timing

81a. . . Setter

82. . . Lift position detection sensor

83. . . Lift position detection sensor

85. . . Micro Switch

86. . . Neutral position sensor switch

87. . . Walking speed sensor

90. . . Fuel tank

91. . . Miaotai automatic end close to the switch

92. . . Planting depth automatic adjustment control button

93. . . switch

94. . . Control button

100. . . Operators

120. . . Front frame

121. . . Right frame

122. . . Left frame

123. . . Front side base frame

124. . . Rear base frame

125. . . Fixed bracket

126. . . Support member

130. . . Rear frame

131. . . Right rise frame

132. . . Left rise frame

133. . . Rear piping frame

134. . . Support frame

134a. . . Upper and lower frame

134b. . . Left and right frame

140. . . Piping frame

141. . . Link frame

142. . . Cylinder mount

143. . . Communication axis

150. . . Accumulator

150a. . . Accumulator body

150b. . . Accumulator connection

151. . . Piping connection

152. . . Piping connection

160. . . Line stop operation component

161. . . Automatic line switch

162,163,164,165,166. . . Line stop switch

170. . . Lifting hydraulic line

171. . . Process control valve

172. . . Power steering assembly

173. . . Horizontal valve assembly

174. . . Lift valve assembly

175. . . Hydraulic pump

176. . . Supply hydraulic line

177. . . High pressure oil circuit

178. . . Low pressure oil circuit

179. . . Operating cylinder

180. . . Directional valve

181. . . Horizontal operating solenoid valve

182. . . Horizontal cylinder

183. . . Rising electromagnetic coil

184. . . Drop solenoid

185. . . Control valve

186. . . Oil delivery path

186a. . . Lifting cylinder side

187. . . Stop valve

188. . . Tank return oil path

235b. . . Rod side cap

250b. . . Accumulator connection

251. . . Piping connection

260. . . cover

[Fig. 1] A side view showing the overall configuration of a rice transplanter.

[Fig. 2] A plan view showing the overall configuration of the rice transplanter.

[Fig. 3] A schematic view of the instrument panel of the rice transplanter as seen from the side. (a) A diagram in which the planting operation panel is inclined by the same slope as the display panel surface. (b) A diagram in which the planting operation panel is inclined by a slope smaller than the display panel surface.

[Fig. 4] A view of the instrument panel of the rice transplanter as seen from the driver's seat side.

[Fig. 5] A perspective view of the instrument panel of the rice transplanter as seen from the left rear.

[Fig. 6] A diagram showing a planting operation panel of the instrument panel. (a) A diagram in which a line stop operation component of a different specification is arranged. (b) A diagram in which a cover is disposed instead of stopping the operation of the component.

[Fig. 7] A plan view of the guide groove of the rice transplanter.

[Fig. 8] A view of the instrument panel of another embodiment as seen from the driver's seat side.

[Fig. 9] A block diagram showing the control device of the rice transplanter.

[Fig. 10] Control flow chart of the blower during the pressing operation.

[Fig. 11] Control flow chart of the blower during the pressing operation.

[Fig. 12] Control flow chart of the blower during the pressing operation.

[Fig. 13] Control flow chart of the blower during the pressing operation.

[Fig. 14] Control flow chart of the blower during the pressing operation.

[Fig. 15] Control flow chart of the blower during the pressing operation.

[Fig. 16] Control flow chart of the blower during the pressing operation.

[Fig. 17] Control flow chart of the blower during the pressing operation.

[Fig. 18] Control flow chart of the blower during the pressing operation.

[Fig. 19] A plan view of the body frame of the rice transplanter.

[Fig. 20] Left side view of the walking portion of the rice transplanter.

[Fig. 21] A plan view of the rear of the walking portion of the rice transplanter.

[Fig. 22] A right side perspective view of the vicinity of the lifting mechanism of the rice transplanter.

[Fig. 23] Left side view near the lifting mechanism of the rice transplanter.

[Fig. 24] Left side view of the vicinity of the lift cylinder of the rice transplanter.

[Fig. 25] Hydraulic circuit diagram for lifting and lowering of the rice transplanter.

[Fig. 26] Left side view of the vicinity of the lift cylinder of the rice transplanter.

[Fig. 27] Hydraulic circuit diagram for lifting and lowering of the rice transplanter.

8. . . pillar

9. . . Hand shaft

17. . . dash board

17a. . . Instrument panel (top of dashboard 17)

18. . . Fuck to the handle

18a. . . Handle the face (the face perpendicular to the axis direction of the handle shaft 9)

50. . . Display panel

50a. . . Display panel surface (operating panel surface of display panel 50)

51. . . Planting operation panel

51a. . . Planting operation panel (operation panel of planting operation panel 51)

Θ1, θ2, θ3, θ4. . . Tilt angle

Claims (5)

A rice transplanter (1) includes a driver's seat (19) and a dashboard (17) disposed in front of the driver's seat (19) and provided with a handlebar (18). The planting portion (40) is attached to the walking portion in a liftable manner, and is characterized in that the handle shaft (9) is supported by the handle shaft (9) protruding upward from the upper surface (17a) of the instrument panel (17). (18), and a planting operation tray (51) equipped with planting operation means (62, 63, 64) used in the planting operation is provided on the upper surface (17a) of the aforementioned instrument panel (17), and the planting operation is performed The operation panel (51a) of the disc (51) is disposed to be inclined obliquely downward toward the driver's seat (19) more obliquely than the upper surface (17a) of the instrument panel (17), and the planting operation panel (51) is disposed. The handle shaft (9) of the handle handle (18) is placed closer to the driver's seat (19) side, and is disposed on the planting operation panel (51a) of the planting operation panel (51). Compared with other operation means disposed on the instrument panel surface (17a) of the aforementioned instrument panel (17), it is arranged to be protruded from the instrument panel surface (17a) side of the instrument panel (17) at different angles. A rice transplanter according to claim 1, wherein a display panel (50) for displaying a working condition in the planting portion (40) is provided on the upper surface (17a) of the instrument panel (17), and the display is displayed. The operation panel surface (50a) of the panel (50) is provided as an inclined surface that is inclined downward toward the driver's seat (19), and the display panel surface (50a) of the display panel (50) and the planting operation panel (51) are planted. The disk surface (51a) is disposed in front of and behind the handlebar shaft (9). Such as the rice transplanter of claim 2, wherein The operation panel surface (51a) of the planting operation panel (51) is set to be inclined by the same slope as the operation panel surface (50a) of the aforementioned display panel (50) or by a slope smaller than the operation panel surface (50a). The rice transplanter according to any one of claims 1 to 3, wherein the planting operation means disposed on the operation panel surface (51a) of the planting operation tray (51) is a line stop operation means (62, 63). , 64). The rice transplanter of claim 4, wherein the row stopping operation means (62, 63, 64) is detachably formed to the planting operation tray (51).