JPH119036A - Rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To readily carry out the connection and disconnection of a sliding rail constituted in a dividable way. SOLUTION: This rice transplanter is equipped with a connecting mechanism J5 for changing a connection state for linking a right and a left rail members 19R and 19L to a disconnected state for allowing the disconnection of the rails, a rodlike drawing member 58 for operating in a screw manner by the revolving drive force of an electric motor 56, an engaging member 62 for operating by the contact with the drawing member 58 during the operation of the drawing member 58 in the drawing direction and a member 55 to be engaged having a hole 55A to be engaged for determining the relative positions of the right and left rail members 19R and 19L by the meshing with the engaging member 62.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding rail having a horizontally long posture with respect to a traveling machine body, a seedling mounting table supported movably in a lateral direction with respect to the sliding rail, and a seedling mounting table. And a planting mechanism for planting seedlings from the field in a field scene, and the seedling planting device can be divided at an intermediate position in the left-right direction, and the axis of each divided product is oriented vertically. The present invention relates to a rice transplanter that is configured to be capable of changing its posture between a working posture and a stowed posture by being formed so as to be capable of changing the posture around it, and more particularly to a technique for connecting two divided sliding rails.

[0002]

2. Description of the Related Art As a rice transplanter configured as described above, there is one disclosed in Japanese Patent Application Laid-Open No. 8-275634.
In this conventional example, a manually operated lock mechanism is shown which can be switched between a state in which two divided slide rails are connected and a state in which separation is permitted.

[0003]

In a rice transplanter shown in the prior art, a seedling mounting table, a sliding rail, and a transmission system, which constitute a seedling planting apparatus, are each configured to be freely splittable at a center position in the left-right direction. By constructing the frame system that supports the divided parts so as to be rotatable around the axis in the vertical position, when storing the planting apparatus, the seedlings are switched by rotating the left and right divided parts. The size of the planting device in the lateral direction is reduced.

In order to switch the planting apparatus to the storage position, it is necessary to release the connection of the slide rails and divide the sliding rail into two parts. When switching, an operation of connecting the two members constituting the sliding rail is required. However, since the sliding rail is located at a low level on the rear end side of the seedling planting device, even if the seedling planting device is raised, the operation of disconnecting or connecting the sliding rail from the traveling body side. Is difficult to do. For this reason, in the related art, both when releasing the connection of the slide rail and when connecting, the worker descends from the traveling machine to the ground and operates the connection mechanism from the rear position of the seedling planting device. However, there is room for improvement in terms of labor.

An object of the present invention is to rationally construct a rice transplanter capable of performing separation and connection of sliding rails with high accuracy by simple operation.

[0006]

As described at the outset, a first feature of the present invention (claim 1) is that, with respect to a traveling body, a sliding rail having a horizontally long posture and a sliding rail with respect to the sliding rail are provided. A seedling mounting device comprising a seedling support movably supported in a lateral direction and a planting mechanism for planting seedlings from the seedling support in a field scene; In a rice transplanter configured such that each divided object can be freely switched between a working posture and a storage posture by being formed so as to be freely changeable in position around the axis of the vertically oriented posture of each divided material, and The sliding rail is constituted by left and right rail members, and a connecting mechanism is provided which can be switched between a connected state for connecting the left and right rail members and a separated state for allowing separation. To bring the left and right rail members closer together When the left and right rail members are brought closer to each other by a pulling means that can be switched between a state in which the left and right rail members are separated by operation in the opposite direction and a state in which the left and right rail members are separated by operation of the actuator in the opposite direction. Is provided with positioning means for setting the left and right rail members at a predetermined relative position. The operation and effect are as follows.

According to a second feature of the present invention (claim 2), in claim 1, the positioning means is such that the positioning member is fixedly mounted on one of the rail members, and the positioning means is freely fittable into the fitted member. The other rail member is provided with a fitting member slidably operable, and the pulling means moves the fitting member to the side of the member to be fitted by a driving force of an actuator provided on the one rail member. The operation and the effect are as follows.

A third feature of the present invention (claim 3) is the screw feed mechanism according to claim 2, wherein the actuator is constituted by an electric motor, and the shift member converts a rotational operation force of the electric motor into a feed force. Is formed at one end, and is formed in a rod shape having a contact portion with the fitting member formed at the other end. When the coupling mechanism is switched to the separated state, friction is generated via the screw feed mechanism. The contact portion of the shift member is separated from the fitting member by the rotational force transmitted to the connection mechanism, and when the coupling mechanism is switched to the connected state, the rotational force in the opposite direction transmitted to the friction type via the screw feed mechanism is used. The shift member is configured so that the posture can be freely changed so that the contact portion of the shift member approaches the fitting member side, and the operation and effect are as follows.

According to the first feature, when the left and right rail members are separated, the left and right rail members can be separated by operating the actuator in a direction in which the pulling force of the pulling means is released. When connecting the left and right rail members, the left and right rail members are drawn by operating the actuator in the direction in which the pulling force of the pulling means acts, and at the same time, the positioning means is moved relative to the left and right rail members. Is set appropriately, and thereafter, the left and right rail members are connected.

According to the second feature, when connecting the left and right rail members, the shift member operates by the driving force of the actuator, and the shift member comes into contact with the fitting member to cover the fitting member. By fitting into the fitting member, the relative positional relationship between the left and right rail members is optimized, and thereafter, the left and right rail members are connected in a state where the left and right rail members are drawn by the shift member. That is, it is possible to set the left and right rail members to the optimum relative positional relationship and perform the connection without providing a dedicated actuator for setting the relative positional relationship between the left and right rail members.

According to the third feature, since the shift member is operated via the screw feed mechanism, the right and left rail members can be connected and separated by switching the rotation direction of the electric motor, and the shift can be performed at the time of separation. Since the member is set in a posture to be separated from the fitting member, contact between the shift member and the fitting member or the like can be avoided when the divided part of the seedling planting device rotates.

[Effect of the Invention] Therefore, a rice transplanter capable of separating the sliding rail and connecting with high accuracy by a simple operation from the traveling machine side without the operator getting down on the ground is rationally constituted. (Claim 1). Further, it is possible to perform connection in a state where the relative positional relationship between the left and right rail members is optimally set by operating a single actuator without inviting a complicated connecting mechanism for connecting the left and right rail members. ), The shift member is actuated in a screw type so that connection and separation can be easily performed, and when the divided part of the planting device is rotated, interference between the shift member and the fitting member is avoided to ensure a smooth posture. The change can be made (claim 3).

[0013]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a drive-type front wheel 1 and a drive-type rear wheel 2 that are steered.
The engine 4 is mounted on the front part of the traveling body 3 provided with a transmission, and a hydrostatic continuously variable transmission 5 to which power from the engine 4 is transmitted and a transmission case 6 are arranged on the rear part of the traveling body 3. A driving seat 7 is arranged at the center of the traveling body 3 and a seedling planting apparatus A is connected to a rear end of the traveling body 3 via a link mechanism 9 driven up and down by a hydraulic cylinder 8 as an actuator. To construct a riding rice transplanter.

An elevator lever 10 is provided on the right side of the driver's seat 7 for raising and lowering the seedling planting device A and for turning on and off a planting clutch (not shown) built in the transmission case 6. A shift lever 11 is provided at a front position of the shift lever 7. The raising / lowering lever 10 has a “raising” position for raising the seedling planting device A as shown in FIG. 36, a “neutral” position for stopping the raising / lowering operation of the seedling planting device A, and a seedling planting device A. Is configured to be freely operable between a “down” position for lowering the plant and a “clutch-on” position for engaging and operating the planting clutch. The planting clutch transmits power from the transmission case 6 to the seedling planting device A. The cutting operation is allowed only when the transmission shaft 12 is in a predetermined rotation phase, and the planting arm (described later) of the seedling planting apparatus A shuts off the power in a posture avoiding contact with the field. I have.

As shown in FIGS. 1 and 2, a seedling placement apparatus A includes a seedling mounting table 13 on which a mat-shaped seedling W is mounted, and a transmission shaft 12.
Transmission cases 14, 1 to which power from the vehicle is transmitted
4. a rotary case 16 that rotates with power transmitted from the transmission case 14 via a chain case 15, and a pair of planted arms 1 provided in the rotary case 16;
7. Center float 18C and pair of side floats 18
S and 18S, each of which is provided with a leveling float 18 and is configured for eight-row planting. At the time of work, the planting arm 17 cuts out seedlings one by one from the lower end of the mat-shaped seedling W placed on the seedling mounting table 13. It is configured to be planted in a field scene.

As shown in FIGS. 2 and 3, the link mechanism 9 comprises a top link 9T at an upper position and a pair of left and right lower links 9L and 9L at a lower position connected to the rear ends by a vertical link 9V. A seedling planting device A is connected to and supported by the vertical link 9V so as to freely roll around a rolling axis Y in a front-back posture.

In this rice transplanter, as shown in FIG. 3, the seedling mounting table 13 is configured to be divided into left and right divided seedling mounting tables 13L and 13R, and a sliding rail 1 supporting the seedling mounting table 13 is provided.
9 is divided into left and right rail members 19L and 19R, and the frame system of the seedling planting device A is configured as described later, so that the left side of the center of the seedling planting device A in the left-right direction is formed. The divisional object AR and the right-side divisional object AL are divided into four sections and rotated about the axis in the vertical position, so that the working posture shown in FIG. 2 and the storage posture folded as shown in FIG. 3 are obtained. It is configured to be switchable.

That is, as shown in FIGS. 2 to 4 and FIG. 16, a vertical plate 23 is formed at the center in the left-right direction of the upper frame 21 and the lower frame 22 constituting the main frame of the planting apparatus A. The vertical link 9V is rotatably connected to a rolling boss 24 formed on the vertical plate 23, and is rotatable around the first shaft cores X1 and X1 in the vertical position at both ends of the main frame. Cylindrical shaft 2
5 are fixedly mounted on the left and right cylindrical shafts 25, 25 so as to rotate integrally with the cylindrical shafts 25, 25, and the swing ends of the respective swing frames 26, 26 are fixed. The left and right tool frames 28 are provided with channel-shaped brackets 27, 27 rotatably around the second axis cores X 2, X 2 formed at the positions, and which rotate integrally with the brackets 27 via the left and right brackets 27, 27. , 28. The left and right transmission cases 14 and two chain cases 15 are supported on the left and right tool frames 28, 28, respectively. The rail members 19L and 19R are supported.

Also, main sprockets 29, 29 are provided on the left and right first shaft cores X1, X1 so as to rotate integrally with the left and right swing frames 26, 26, respectively. Rotating frames 30, 3 that rotate together
The supporting strength of the swing frame 26 is increased by bending the tapered tip end of each rotating frame 30 downward and fixing it to the swing frame 26 by welding.
Further, the bracket 2 is provided on the left and right second shaft cores X2 and X2.
7 and 27, and the main sprocket 2
Driven sprocket 3 with half the number of teeth of 9,29
1 and 31, and an endless chain 32 is wound around the main sprocket 29 and the driven sprocket 31;
Further, a columnar frame 33 whose base end is supported by the bracket 27 is provided on the left and right second axis cores X2 and X2, and the seedling mounting table is placed on the upper ends of the left and right columnar frames 33 and 33 in a lateral orientation. Support frame 3 for supporting 13
4,34.

As shown in FIGS. 5 (a) and 5 (b), a bevel case 35 to which the power from the transmission shaft 12 is transmitted via an intermediate shaft 12A is provided with an output shaft 36 which branches and outputs the power in the left-right direction. , 36, and the intermediate shafts 37, 37 for transmitting the power from the output shafts 36, 36 to the left and right transmission cases 14, 14, are disposed in a horizontal posture, and the left and right divided parts AL, AR
Each is supported, and an occlusal clutch is provided between the intermediate shaft 37 and the output shaft 36. This bite clutch has three output shafts.
6, a shift member 38 which is spline-fitted slidably with respect to 6, an engagement member 39 fixed to the end of the intermediate shaft 37, and a spring 40 for urging the shift member 38 in the direction of the engagement member 39. The bite claw 38A formed on the shift member 38 and the bite claw 39A formed on the bite member 39
Are engaged only in a specific relative rotation phase. Further, the shifters 4 which can be operated to contact the respective shift members 38, 38 so that the left and right shift members 38, 38 are simultaneously operated inward to simultaneously disengage the left and right occlusal clutches.
1 and 41, a link member 42 for simultaneously operating the respective shifters 41, 41, and a clutch lever 44 for engaging and disengaging an occlusal clutch via a rod 43 as shown in FIG. In preparation.

As shown in FIG. 2, the left transmission case 14
The seedlings are provided with a moving member 46 for transmitting the moving force of the top (not shown) engaging in the spiral groove of the screw shaft 45 rotated and driven by the power to the anti-seedling mounting surface side of the left divided seedling mounting table 13L. Stand 1
3 is constituted. The lateral feed mechanism functions to reciprocate the seedling mounting table 13 left and right during the transplanting operation of the seedlings in the field scene. A protection frame 47 having a shape surrounding the outer end of the slide rail 19 is connected and fixed to the outer end of the support frame 28 so as to protect the outer end of the slide rail 19.

As shown in FIGS. 6 and 7, round pipe-shaped engaging members 5 are provided at front positions of the left and right tool frames 28, 28.
1 and 51 are fixedly mounted, and a shaft 52 in a lateral orientation with respect to the lower frame 22 is rotatably supported around the axis, and a pair of left and right lock members 53 and The first connection mechanism J1 is provided with the first connection mechanism 53. The first connecting mechanism J1 includes left and right lock members 53,
A release lever 54 for simultaneously operating the lock members 53 in an open position is provided, and respective lock members 53, 53 are spring-biased in the engagement direction, and a concave portion 53A that engages with the engagement member 51 is provided above the lock member 53. When the engaging member 51 in the separated state is displaced in the locking direction on the upper surface on the swinging end side (rear end side) of the locking member 53, the locking member 53 contacts the locking member 53. A guide surface 53B having an inclined posture is formed so as to allow the swing end to swing downward to allow engagement.

As shown in FIG. 4, when the seedling planting apparatus A is in the working posture, in order to maintain this working posture, an artificial operation type is placed at the upper position and the lower position of the seedling mounting surface of the seedling mounting table 13. And a fourth connection mechanism J4 of a manually operated type at a connection position of the support frames 34, 34 (each of the connection mechanisms J2 to J).
4 is not described in detail).

As shown in FIGS. 8 to 11, the left and right rail members 19L, 19R are in a state where the seedling planting apparatus A is in the working posture with respect to the divided portions of the left and right rail members 19L, 19R.
9R that can be electrically switched between the connected state and the separated state
A coupling mechanism J5 is provided. The coupling mechanism J5 is provided with a screw shaft 57 in a lateral orientation driven by an electric motor 56 with respect to a left bracket 55 provided on the lower surface side of the left rail member 19L. A bar-shaped pulling member 58 having one end screwed thereto, a coil spring 59 for transmitting the rotational force of the screw shaft 57 to the pulling member 58 in a frictional manner, and a left bracket 55 for determining the posture of the pulling member 58 A first restricting portion G1 having a concave shape, a second restricting portion G2 formed linearly for pulling, and a second restricting portion G3 linearly formed for separation.
A fitting member 62 slidably supported via a guide cylinder 61 in a lateral orientation with respect to a right bracket 60 provided on the lower surface side of the right rail member 19R, and the fitting member 62 is urged toward the retreating side. The fitting member 62
A tapered surface 62A for fitting is formed at the tip of the left bracket 55, and a concave fitting hole 55A is formed in the left bracket 55 at a position facing the tapered surface 62A.

In the fifth connecting mechanism J5, when the seedling planting apparatus A is divided and folded, the screw shaft 57 is rotated clockwise in FIG. 11 by the driving force from the electric motor 56. The contact portion of the pulling member 58 at the end opposite to the screw shaft moves in a direction to separate from the fitting member 62, and this movement causes the tapered surface 62 </ b> A of the fitting member 62 to move into the fitting hole 55.
When the pulling member 58 reaches the position where the restriction of the posture by the first restriction portion G1 is released,
The pulling tool 58 is rotated by a rotational force transmitted from the screw shaft 57 in a frictional manner to a position in which the pulling member 58 contacts the third restricting member G3 (a position indicated by a solid line in the drawing). It moves in the direction separating from. As a result, the left and right rail members 19L and 19R can be separated, and at the same time, the divided parts AL and AR can be rotated while avoiding interference between the pulling member 58 and the fitting member 62. .

When the left and right rail members 19L and 19R are connected by the fifth connecting mechanism J5, the screw shaft 57 is driven by the driving force from the electric motor 56 with the divided parts AL and AR set in the working posture. By rotating counterclockwise in FIG. 11, the posture in which the contact portion of the pull-in member 58 comes into contact with the second regulating portion G2 by the rotational force transmitted from the screw shaft 57 in a frictional manner (in FIG. To the position shown)
It moves to the side approaching the fitting member 62 in this rotating posture. Next, when the pulling member 58 enters the first regulating portion G1 by this movement, the contact portion of the pulling member 58 contacts the fitting member 62 in a state where the posture change is regulated, and as a result, the fitting member The left and right rail members 19L and 19R are determined to have an appropriate relative positional relationship by being operated in the fitting direction and the tapered surface 62A being fitted into the fitted hole 55A. Of the rail members 19L and 19R. In this configuration, the pulling member 58 is provided in the third aspect.
The pulling member 58 and the screw shaft 57 screwed to the pulling member 58 constitute the screw feed mechanism of claim 3, and the left bracket 55 in which the concave fitting hole 55A is formed is claimed. This corresponds to the fitted member in item 2.

As shown in FIGS. 2, 12, and 13, the extending ends 64A, 64A of the connecting frames 64, 64 formed rearward from the rear ends of the chain cases 15, 15 at the positions sandwiching the divided surfaces. The connection frames 64, 64 are bent so that they are close to each other in a front-to-back parallel posture, and a sixth connection mechanism J6 that can be electrically switched between the connection frames 64, 64 between a connected state and a separated state. It has. The sixth connecting mechanism J6 is connected to the left supporting plate 65 fixed to the end of the left connecting frame 64 by the fifth connecting mechanism J6.
5, the left bracket 55 and the electric motor 5
6, a screw shaft 57, a pulling member 58, and a coil spring 59, and abuts against a contact surface 65A formed on the left support plate 65 with respect to a right support plate 66 fixed to an end of the right connection frame 64. The contact bolt 67 is provided. In the sixth connection mechanism J6, the pulling member 58 contacts the extended end 64A of the right connecting frame 64 at the time of connection to maintain the connected state, and at the time of separation, pulls from the extended end 64A of the right connecting frame 64. Member 5
Although the fifth connecting mechanism J5 is different from the fifth connecting mechanism J5 in that it is separated, the fifth connecting mechanism J5 is the same as the fifth connecting mechanism J5 in that the attitude of the pulling member 58 is switched by the driving force from the screw shaft 57.

As shown in FIG. 14, left and right plate-like support frames 69, 69 are formed so as to protrude forward from the main frame.
A support shaft 70 is swingably supported around an axis centered in a lateral posture over the 69, and the first arm 7
The first, second and third arms 72 and 73 are provided so as to rotate integrally. A strip-shaped operation member 75 slidably connected to the top link 9T via a connection shaft 74.
As shown in FIGS. 22 and 23, an engaging hole 75A is formed in a long hole shape elongated in the longitudinal direction of the operating member 75.
Also, as shown in FIGS.
A connecting pin 76 detachable from 5A is provided at the swinging end of the first arm 71 in a state guided by the guide cylinder 77 and urged in the engaging direction by a spring 78.
A clutch motor 80 is provided on the side of the seedling plant A as an actuator for operating in a direction in which the seedling is pulled out via a wire 79. The clutch mechanism C is constituted by the engagement hole 75A and the connection pin 76. As shown in FIG. 14, a damper 82 as a damping means is provided between a frame member 81 provided on the main frame and the second arm 72, and is rotatably supported in a vertical position with respect to the main frame. 1
A push-pull rod 84 is interposed between the swing arm of the arm 83 swinging integrally with the shaft S1 and the third arm 73.

As shown in FIG. 16 and FIG. 17, the upper frame 21 constituting the main frame is sandwiched between a pair of upper and lower support plates 85 provided on the upper surface side.
A sector gear-shaped first shaft that rotates integrally with the first shaft S1
A gear T1, a second gear T2 that meshes with the first gear T1 and is rotatably supported around a second axis S2, and a gear that meshes with the second gear T2 and rotatably rotates about a third axis S3. And an arm portion 86 formed on the upper surface of the third gear T3, and between the arm portion 86 formed on the upper surface of the second gear T2 and the left rotating frame 30. Electric cylinders CY, CY that extend and contract are operated between the right rotation frame 30 and the right rotation frame 30. Each of the arms 86 and 87 is formed to protrude upward through an opening formed in the upper support plate 85.

Each of the electric cylinders CY, CY is shown in FIG.
As shown in FIGS. 8 and 19, an electric cylinder motor 89 is provided inside a main body case 88, and an outer surface of the main body case 88 and an end of a rod 91 which expands and contracts in a screw type by the driving force of the cylinder motor 89. And connecting pieces 90, 90
And an arm 93A engaging with a pin 92A protruding from a plate 92 that operates integrally with the rod 91.
Is provided with a potentiometer type stroke sensor 93 that electrically measures the amount of expansion and contraction of the rod 91 via an electric motor, and is configured to be electrically expandable and contractable, and is configured so that the amount of expansion and contraction can be measured by the stroke sensor 93. The respective connecting pieces 90, 90 are connecting shafts 90A, 90A in a vertical orientation.
The arm portions 86 and 87 and the rotating frame 3
0,30.

A sprocket 94 is supported at a position behind the first gear T1 so as to be rotatable around a fourth shaft S4 in a vertical position, and swings around a connecting shaft 90A of an arm portion 86 of the second gear T2. The swinging piece 95 movably supported and the upper frame 21
A chain 9 having one end connected to a swinging piece 95 and an intermediate portion wound around a sprocket 94 between a stay 9 fixed to the
7, one end is connected to the chain 97 and the other end is a stay 9
6 and a coil spring 98 supported by the spring 6 are formed. This coil spring 98 is divided A
When the L and AR are operated from the working posture to the storage posture, an urging force for moving the divided objects AL and AR toward the storage posture is applied at the end position of the operation, and the divided objects AL and AR are operated from the storage posture to the working posture. At the end of the operation, an urging force is applied at the end position of the operation to move the divided objects AL and AR toward the working posture, and the direction of the urging force is the second direction.
A dead point DP formed at a position connecting the shaft center position of the shaft S2 and the outer peripheral position of the sprocket 94 (see FIGS. 22 and 2)
3) is determined based on the position of the swinging piece 95 with reference to the reference. Further, the operation of releasing the contact between the inner surface of the engagement hole 75A and the connection pin 76 by the urging force from the coil spring 98 is performed. The position is determined by the position of the rocking piece 95 with reference to the switching point CP (see FIGS. 24 and 30). In addition, a plate-shaped stopper 99 that determines both operating limits of the arm portion 87 by contact with the arm portion 87 provided on the third gear T3 is fixedly provided on the upper surface of the upper support plate 85.

In this rice transplanter, by using the above-described configuration, the seedling planting apparatus A can be switched from the working posture to the storage posture and from the storage posture to the working posture. Control system that performs semi-automatically.

That is, the side position of the driver's seat 7 is shown in FIG.
As shown in FIG. 5, a control case 101 is provided. The case 101 includes a folding switch 102, a folding lamp 103, a restoration switch 104, and a restoration lamp 1.
05, a confirmation switch 106, and a confirmation lamp 107, and a control system shown in FIG. 36 is formed.

In this control system, a potentiometer type lever sensor 10 for measuring the operation position of the elevating lever 10 is provided to a control device 108 having a microprocessor.
S, a link sensor 9S for measuring the height of the seedling planting device A from the swing amount of the link mechanism 9, and the stroke sensor 9
3, 93, a limit switch type position sensor 109 for detecting that the seedling mounting table 13 is located at the left end,
Posture sensors 110, 110 for detecting that the left and right swing frames 26, 26 have reached a preset storage posture;
An input system for signals from the folding switch 102, the restoration switch 104, and the confirmation switch 106 is formed, and an electromagnetically operated control valve 8V for controlling the hydraulic cylinder 8, the clutch motor 80, the cylinder motor 8
9, 89, folding lamp 103, restoration lamp 105,
A signal output system for each of the confirmation lamps 107 is formed. The control device 108 includes a folding routine for performing a control operation of folding the seedling planting device A to switch to the storage position, and a control position for the seedling planting device A in the storage position. Is set in the form of a program.

When the seedling planting apparatus A is folded to switch to the storage position, the folding lamp 103 is turned on by turning on the folding switch 102 as shown in the flowcharts of FIGS. In this state, the operator needs to operate the raising / lowering lever 10 to the “clutch-in” position shown in FIG. 36 to operate the planting clutch to operate the seedling mounting table 13 at the left end. (The seedling mounting table 13 may be positioned at the left end before the folding switch 102 is turned on), and the folding lamp 103 is turned on to prompt this operation. When the controller 108 determines that the seedling mounting table 13 has reached the left end position as shown in FIG. 31 based on the signal from the position sensor 109, the raising / lowering lever 10 is then moved to the "down" position. The operation is determined by a signal from the lever sensor 10S, and after the determination, the control device 1
08 controls the control valve 8V to lower the seedling planting apparatus A to a preset height (steps # 101 to # 104).

The descending height is set at a level where the bottom surface of the leveling float 18 is sufficiently spaced upward from the ground on the flat surface of the rice transplanter where the wheels are not submerged. When the descending of the planting device A is input to the control device 108 by a signal from the link sensor 9S, the descending of the planting device A is stopped, and the connecting pin 7 is stopped.
6, the clutch mechanism C is set to the engaged state by operating the protrusion,
Further, the fifth and sixth connecting mechanisms J5 and J6 are operated in the separating direction, and the confirmation lamp 107 is made to blink (# 1).
05 to # 107 steps).

The blinking operation of the confirmation lamp 107 is performed by the manual disengagement operation of the bite clutch (the clutch lever 44).
), An operation for artificially releasing the connection of the first to fourth connecting mechanisms J1 to J4, and an artificial operation for moving the right divided seedling mounting table 13R to the right end position as shown in FIG. When the operator turns on the confirmation switch 106 after completing these operations, the control device 108 turns off the confirmation lamp 107, and then seedlings are planted under the control of the control valve 8V. An operation of raising the device A to a preset height (upper limit) is performed, and as shown in FIG. 20, the ascending drive force transmitted via the clutch mechanism C is converted into rotational power to convert the left and right divided objects AL and AR. 33, the respective divided objects AL and AR are operated in the direction of the storage posture as shown in FIG. 33 (steps # 108 to # 110). At the time of this posture switching, the signals from the link sensor 9S and the stroke sensors 93, 93 are fed back to divide the divided objects AL, AR in a posture in which the protection frames 47, 47 avoid contact with the rear wheels 2, 2. The cylinder motors 89, 89 of the electric cylinders CY, CY are controlled to rotate the objects AL, AR.

In particular, during the raising operation of the seedling plant A, the second
As shown in FIGS. 22 and 23, when the swinging piece 95 connected to the arm portion 86 provided in the gear T2 exceeds the dead point DP, the urging force of the coil spring 98 acts in the retracted direction, and furthermore, the lift cylinder Seedling plant A with 8 driving force
26 and 27, the right and left divided parts AL and AR are actuated by the urging force from the coil spring 98 when the swinging piece 95 exceeds the switching point CP. During this operation, a gradual operation is performed in a state where a sudden change in posture is suppressed by the damper 82.
As a result of this operation, the connection pin 76 engaged in the engagement hole 75A of the operation member 75 reaches the vertical center position of the engagement hole 75A, and as a result, the shearing direction acting on the engagement hole 75A and the connection pin 76 mutually. And the connection pin 76 can be easily pulled out by releasing the force.

That is, the switching point CP is divided into left and right divided objects A.
When the L and AR are stored and when the L and AR are restored, the left and right electric cylinders CY and CY are formed based on the axes of the connection shafts 90A and 90A, respectively. As an example of the switching point CP set based on the left electric cylinder YC at the time of storage, as shown in FIGS. 24 and 30, the left electric cylinder CY in plan view is shown.
Of the second connecting shafts 90A, 90A on a straight line connecting the respective shaft cores.
The relationship is such that the axes of the shaft S2 coincide. The right switching point CP is connected to the connecting shaft 90 of the right electric cylinder CY in plan view.
The axis of the third axis S3 coincides with the axis of the third axis S3 on a straight line connecting the axes of the axes A and 90A (not shown), and the left and right divided parts AL and AR are rotated in the storage direction. Are set at the same time so as to reach the switching points CP, CP, and after reaching the switching points CP, CP,
The second and third gears T1, T2, and T3 are configured to be slightly rotated in the same direction, and thereafter, the rotation is restricted by the stopper 99 (a switching point CP at the time of restoration will be described later).

Then, the raising of the seedling plant A is further continued by the driving force of the lift cylinder 8, and the left and right divided parts AL, AR
Reaches the switching point CP shown in FIG. 24 and FIG. 30 (a), the left and right divided objects AL and AR are both in the most operated state. Thereafter, when it is detected based on a signal from the link sensor 9S that the switching point CP has been slightly exceeded, a control operation is set so as to stop driving of the lift cylinder 8 (see FIG. After the driving of the lift cylinder 8 is stopped, the first, second, and third gears T1, T2, and T3 can be rotated in the same direction. As shown in FIG. 30 (b), the left and right divided parts AL and AR operate in opposite directions around the first axis X1, so that the load is light and the amount of operation is small. At the same time as the divided objects AL and AR are operated by the urging force, the swing end of the first arm 71 swings downward with this operation. As a result, as described above, the connecting pin 76 that engages with the engagement hole 75A of the operation member 75 reaches the vertical center position of the engagement hole 75A.

After the seedling planting apparatus A reaches the upper limit due to the driving force of the hydraulic cylinder 8, the control device 108 controls the posture sensors 110, 110 to move the left and right swing frames 26, 26 as shown in FIG. The electric cylinders CY and CY are extended and retracted until it is determined that the storage position has been set in advance, and thereafter the coupling pin 7 is operated by the operation of the clutch motor 80.
6, the clutch mechanism C is disengaged, the confirmation mechanism 107 is blinked again to prompt the operator to perform a necessary lock operation, and the like. Turns on confirmation switch 106
By operating, the folding lamp 103 is turned off and the control operation ends (steps # 111 to # 116).

When restoring the seedling planting apparatus A in the storage position to the working position, the restoration lamp 105 is turned on by turning on the restoration switch 104 as shown in the flowcharts of FIGS. . In this state, after determining from the signal from the lever sensor 10S that the operator has operated the elevating lever 10 to the "elevated" position shown in FIG. 36, the control device 108 controls the control valve 8V to activate the seedling planting device A. Raise to a preset height (upper limit) (# 201 to # 20)
3 steps).

When it is determined by the signal from the link sensor 9S that the height has risen to this height, the control device 108 stops the rise, operates the connecting pin 76 to protrude, sets the clutch mechanism C to the engaged state, and checks the confirmation lamp. 107 is blinked (steps # 204 and # 205).

The blinking operation of the confirmation lamp 107 urges an artificial release operation of a lock mechanism or the like for maintaining the divided parts AL and AR of the seedling planting apparatus A in the storage posture.
When the operator turns on the confirmation switch 106 after completing the necessary operation such as the release operation, the control device 108 is turned on.
Turns off the confirmation lamp 107, and then lowers the seedling planting apparatus A to a preset height (the same level as the height in step # 104) by controlling the control valve 8V, as shown in FIG. In addition, the lowering driving force transmitted via the clutch mechanism C is converted into a rotational power to convert the left and right divided parts A into
L and AR are transmitted to rotate the respective divided parts AL and AR in the opposite direction to the above-described direction to operate in the direction of the restoration posture (steps # 206 to # 208). In accordance with the control device 108, based on feedback signals from the link sensor 9S and the stroke sensors 93, 93, the divided frames AL, AR in a posture in which the protection frames 47, 47 avoid contact with the rear wheels 2, 2. AL, AR
The cylinder motors 89, 89 of the electric cylinders CY, CY are controlled so as to rotate.

In particular, during the raising operation of the seedling plant A, the second
Oscillating piece 95 connected to arm 86 provided on gear T2
However, as shown in FIGS. 26 and 27, the dead point DP
When the force exceeds the threshold, the urging force of the coil spring 98 is applied in the restoring direction (the working posture direction), and the lowering of the seedling planting device A is continued, and the swinging piece 95 is switched as shown in FIGS. When the point CP is exceeded, the left and right divided objects AL and AR are operated by the urging force from the coil spring 98,
In this operation, the damper 82 performs a gradual operation in a state in which a sudden change in posture is suppressed. In this operation, the connecting pin 76 engaged in the engagement hole 75A of the operation member 75 causes the upper and lower portions of the engagement hole 75A to move upward and downward. As a result, the force in the shearing direction acting on the engaging hole 75A and the connecting pin 76 is released, so that the connecting pin 76 can be easily pulled out.

That is, the switching point CP at the time of restoring the left and right divided objects AL and AR is also formed on the basis of the axis of the connecting shafts 90A and 90A of the left and right electric cylinders CY and CY. As an example of the left switching point CP when restoring the divided parts AL and AR of FIG. 28, as shown in FIG. 28, the connecting shaft 90A of the left electric cylinder CY in plan view is used.
The relationship is such that the axis of the second axis S2 coincides with the straight line connecting the axes of the 90A. Further, the right switching point CP has a relationship in which the axis of the third axis S3 coincides with a straight line connecting the respective axes of the connection axes 90A, 90A of the right electric cylinder CY in plan view (shown in the drawing). Zu), left and right splits AL, AR respectively
At the same time, the timing is set so as to reach the switching points CP. Further, even after reaching the switching points CP, the first, second, and third gears T1, T2, and T3 slightly rotate in the same direction. After that, the rotation is restricted by the stopper 99.

Then, the lowering of the seedling planting apparatus A is further continued by the driving force of the lift cylinder 8, and the left and right divided parts AL, AR
Reaches the switching point CP shown in FIG.
Both L and AR are in the state of being operated most greatly. Thereafter, when it is detected based on a signal from the link sensor 9S that the switching point CP has been slightly exceeded, a control operation is set to stop the lowering operation of the lift cylinder 8, and thus the lowering operation of the lift cylinder 8 is performed. Is stopped, even if the first, second, and third gears T1, T2, and T3 are rotated in the same direction, as shown in FIG.
Since the operating direction of each of the Rs is in the opposite direction, the load is light and the amount of the operation is also small. Therefore, each of the divided parts AL and AR is operated by the urging force of the coil spring 98 toward this direction, and at the same time, this operation is performed. Accordingly, the swing end of the first arm 71 swings upward. As a result, as described above, the connecting pin 76 that engages with the engagement hole 75A of the operation member 75 reaches the vertical center position of the engagement hole 75A.

When the seedling plant A is lowered to the set height by the driving force of the hydraulic cylinder 8, the first connecting mechanism J1
After the lock member 53 swings downward due to the contact between the engagement member 51 and the guide surface 53B of the lock member 53, the engagement member 51 engages with the concave portion 53A of the lock member 53 and is automatically connected. After this lowering, the control device 108 pulls out the connecting pin 76 by operating the clutch motor 80 and operates the clutch mechanism C to disconnect the fifth and sixth connecting mechanisms J5 and J6. After operating in the connecting direction, the confirmation lamp 107 is again turned on and off so that the artificial engagement operation of the occlusal clutch and the right divided seedling mounting table 18 on the right side can be performed.
As shown in FIG. 31, the operator is urged to perform an operation of moving the R to the left divided seedling mounting table 18L and a coupling operation of the first to fourth coupling mechanisms J1 to J4. By turning on the confirmation switch 106 after the completion, the control device 108 turns off the confirmation lamp 107, turns off the restoration lamp 105, and ends the control operation (steps # 209 to # 214).

As described above, in the present invention, when switching from the working posture of the seedling planting apparatus A to the storage posture and from the storage posture to the working posture, the raising and lowering driving force of the seedling planting apparatus A is used. A large-sized actuator for changing the posture of the planting device A is not required, and at the time of changing the posture, the divided parts AL and AR and the rear wheels 2 and 2 are operated by the expansion and contraction operation of the electric cylinders CY and CY. This makes it possible to avoid interference. Furthermore, the split AL, A
The clutch mechanism C for transmitting the operating force for switching the position of the R from the link mechanism 9 to the operation system is constituted by the connecting pin 76 inserted into and removed from the engagement hole 75A. 98 energizing forces are divided AL,
When the AR is actuated, the shear force acting between the engagement hole 75A and the connecting pin 76 is released, and the clutch mechanism C can be disengaged with a light operating force of the clutch motor 80.

In particular, the fourth position away from the driver's seat 7
The connection mechanism J4 and the fifth connection mechanism J5 are configured to be connected and separated by an electric operation, and the first to fourth connection mechanisms J
1 to J4 and the clutch lever 44 of the occlusal clutch are configured so as to be manually operable from the side of the traveling machine body. With this configuration, the worker can operate both when folding and restoring the seedling planting apparatus A. Seldom needs to perform the work of descending from the traveling body 3. Also, the fourth coupling mechanism J4
When connecting the rail members 19L, 19R with the respective rail members 19L, 19R, the respective rail members 19L, 19R are positioned so as to have an appropriate relative positional relationship.
Is drawn, so that the seedling mounting table 13 can be smoothly guided without forming a step at an intermediate position of the sliding rail 19.

[Another Embodiment] The present invention is not limited to the above-described embodiment. For example, instead of the above-described embodiment, all the coupling mechanisms and the occlusal clutch are configured to be electrically controllable, and It is possible to configure so that automatic folding and restoration can be performed without any operation. Contrary to the above-described embodiment, the seedling planting apparatus A is folded by lowering the seedling planting apparatus A, and seedling planting is performed. It is also possible to configure the operation system so that the seedling planting device A is restored when the device A rises.

[Brief description of the drawings]

FIG. 1 is an overall side view of a rice transplanter.

FIG. 2 is a plan view showing a frame posture and the like of the seedling planting apparatus in a working posture.

FIG. 3 is a plan view showing the frame posture and the like of the seedling planting apparatus in the storage posture.

FIG. 4 is a front view of a part of a main frame of the planting apparatus;

FIG. 5 is a rear view of the occlusal clutch in an on state and an off state.

FIG. 6 is a plan view showing an arrangement of a first connection mechanism.

FIG. 7 is a side view of the first connection mechanism.

FIG. 8 is a rear view of the fifth coupling mechanism in a separated state.

FIG. 9 is a rear view of the connection state of the fifth connection mechanism.

FIG. 10 is a plan view showing a connection state of a fifth connection mechanism.

FIG. 11 is a side view showing the posture of the pulling member.

FIG. 12 is a rear view of the connection state of the sixth connection mechanism.

FIG. 13 is a plan view showing a connection state of a sixth connection mechanism.

FIG. 14 is a side view of the rear end of the link mechanism.

FIG. 15 is a diagram showing a linkage between a clutch mechanism and a clutch motor in an on state and an off state.

FIG. 16 is a rear view of a portion of the main frame.

FIG. 17 is a plan view of a portion of a main frame.

FIG. 18 is a partially developed plan view of the electric cylinder.

FIG. 19 is a sectional view showing a support structure of the stroke sensor.

FIG. 20 is a schematic view showing a transmission form of an operating force during a raising operation of the seedling planting device.

FIG. 21 is a schematic view showing a transmission form of an operating force at the time of a descending operation of the seedling planting device.

FIG. 22 is a plan view showing a state immediately before the rocking piece reaches a dead point during the raising operation of the seedling planting apparatus.

FIG. 23 is a plan view showing a state immediately after the rocking piece exceeds a dead point when the seedling planting device is raised.

FIG. 24 is a plan view showing a state where the rocking piece has reached a switching point during the raising operation of the seedling planting apparatus.

FIG. 25 is a plan view showing a state where the rocking piece has exceeded the switching point when the seedling planting device is raised.

FIG. 26 is a plan view showing a state immediately before the rocking piece reaches a dead point when the seedling planting apparatus descends.

FIG. 27 is a plan view showing a state immediately after the swinging piece has passed over a dead point when the seedling planting apparatus is lowered.

FIG. 28 is a plan view showing a state where the rocking piece has reached a switching point when the seedling planting apparatus is lowered.

FIG. 29 is a plan view showing a state where the rocking piece has exceeded the switching point when the seedling planting apparatus is lowered.

FIG. 30 is a schematic diagram showing a state in which the rocking piece reaches a switching point during the raising operation of the seedling-planting device, and a direction in which force is applied when the rocking piece reaches the working end beyond the switching point.

FIG. 31 is a plan view of a rice transplanter in which a seedling mounting table is positioned at an end of a sliding rail.

FIG. 32 is a plan view of a rice transplanter obtained by dividing a seedling mounting table.

FIG. 33 is a plan view of a rice transplanter obtained by dividing and rotating a seedling planting apparatus.

FIG. 34 is a plan view of a rice transplanter in which the seedling-planting device is set in a retracted position.

FIG. 35 is a plan view of a control case.

FIG. 36 is a block circuit diagram of a control system.

FIG. 37 is a flowchart showing the first half of a folding routine;

FIG. 38 is a flowchart showing the latter half of the folding routine.

FIG. 39 is a flowchart showing the first half of a restoration routine;

FIG. 40 is a flowchart showing the latter half of the restoration routine;

[Explanation of symbols]

 Reference Signs List 3 traveling machine body 13 seedling mounting stand 19 sliding rail 19L, 19R rail member 55 fitted member 58 shift member 56 actuator 62 fitting member A seedling planting apparatus AL, AR divided parts J5 coupling mechanism

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Junji Kurano 64 Ishizukita-cho, Sakai-shi, Osaka Inside Kubota Sakai Works

Claims (3)

[Claims] 1. A sliding rail having a horizontally long posture with respect to a traveling machine body, a seedling mounting table supported movably in a lateral direction with respect to the sliding rail, and a seedling from the seedling mounting table in a field scene. A seedling planting device comprising a planting mechanism for planting in
This seedling planting device can be divided at an intermediate position in the left-right direction, and the posture can be freely changed around the axis of the vertical posture of each divided material, so that each divided material has a working posture and a storage posture. A rice transplanter configured so as to be switchable, wherein the sliding rail is constituted by left and right rail members, and a connecting mechanism that can be switched between a connected state for connecting the left and right rail members and a separated state for allowing separation. A state in which the connecting mechanism operates and fixes the left and right rail members in a direction approaching each other by operating the actuator, and a state in which the left and right rail members are allowed to be separated by operating the actuator in the opposite direction. It comprises switchable pulling means and positioning means for setting the left and right rail members at a predetermined relative position when the left and right rail members are brought closer to each other by the pulling means. Rice transplanter. 2. A fitting member, wherein the positioning means is fixed to one of the rail members, and a fitting member slidably provided on the other rail member so as to be able to be fitted into the fitting member. 2. The rice transplanter according to claim 1, wherein said pulling means comprises a shift member that pulls the fitting member toward the fitted member by a driving force of an actuator provided on the one rail member. . 3. An actuator comprising an electric motor, wherein the shift member forms a screw feed mechanism at one end for converting a rotational operation force of the electric motor into a feed force, and the fitting is formed at the other end. The contact portion of the shift member is formed in a rod shape having a contact portion with the joining member, and the contact portion of the shift member is fitted by a rotational force transmitted frictionally via the screw feed mechanism when the connection mechanism is switched to the separated state. When the coupling mechanism is separated from the coupling member and the coupling mechanism is switched to the coupling state, the contact portion of the shift member is brought closer to the fitting member side by a rotational force in a reverse direction transmitted frictionally via the screw feed mechanism. 3. The rice transplanter according to claim 2, wherein the shift member is configured to be able to change the posture.