JPH119038A - Rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice transplanter for carrying out the operation of dividing a seedling transplanting apparatus into two parts and folding them without installing an actuator of exclusive use. SOLUTION: This rice transplanter is equipped with a clutch mechanism C capable of changing a state for transmitting the operation force of a link mechanism 9 for liftably supporting a seedling transplanting apparatus so as to maintain the right and left divided materials of the seedling transplanting apparatus in a vertical position rotatably around a shaft, to fold the right and left divided materials by the upward operation force of the seedling transplanting apparatus and to restore the right and left divided resistances to an operation position by the downward operation force of the seedling transplanting apparatus to a system for rotating and operating the right and left divided materials to a state to disconnect the transmission.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support system for supporting a seedling plant so as to be able to ascend and descend through a link mechanism driven and raised by an actuator with respect to a traveling machine body. Free, and, by forming each of the divided parts so that the posture can be freely changed around the axis of the vertical orientation, regarding the rice transplanter configured to be able to switch between each of the divided parts between the working posture and the storage posture, The present invention relates to an improvement of a rice transplanter configured to switch the posture of a left and right divided object by a driving force of an actuator.

[0002]

2. Description of the Related Art Conventionally, there is a rice transplanter constructed as described in Japanese Patent Laid-Open Publication No. Hei 8-70650. In this conventional example, a seedling planting apparatus is configured to be able to be divided at right and left central positions. In addition, by providing an electric motor for rotating the left and right divided parts around the axis in the vertical position, the left and right divided parts can be switched between the working posture and the storage posture by the driving force from the electric motor. Have been.

[0003]

In the apparatus for dividing the seedling plant and switching the posture as described above, it is difficult to use an eight-row planting or a 10-row planting.
Even if the seedling planting device is large and has a large size in the lateral direction, such as for streaking, a good surface can be obtained in which the lateral size can be reduced by switching to the storage position, and With the actuator having the actuator for switching the posture of the divided product, the burden on the worker can be reduced both when the seedling planting device is folded and stored and when the working posture is restored. I have.

[0004] However, actuators for rotating large and heavy divided parts are inevitably increased in size and capacity, and there is room for improvement.

An object of the present invention is to rationally configure a rice transplanter which can easily switch the posture of a divided part of a seedling planting apparatus which is configured to be able to change the posture.

[0006]

According to a first aspect of the present invention, as described at the outset, a seedling is supported on a traveling machine body via a link mechanism driven up and down by an actuator so as to be able to move up and down. The planting device can be divided at the intermediate position in the left and right direction, and each of the divided parts can be changed between the working posture and the storage posture by forming each divided object freely around the vertical axis. In the rice transplanter configured freely, an operating mechanism for transmitting the turning motion around the axis of the vertical posture to at least one of the left and right divided parts to change the posture of the divided part is provided, and It has a clutch mechanism that can be switched between an on state in which the raising and lowering operation force of the seedling planting device is transmitted to the operating mechanism and an off state in which the raising and lowering operation force of the seedling planting device is shut off. And the effect is as follows

A second feature of the present invention (claim 2) is that in claim 1, there is provided a switch for switching the posture of the left and right divided parts, and the clutch mechanism is turned on based on the operation of the switch. After setting, the control of the actuator raises and lowers the seedling planting device to switch the posture of the left and right divided parts, and then includes a control device that switches the clutch mechanism to the disengaged state. Yes, its operation and effects are as follows.

According to a third feature of the present invention (claim 3), the operating mechanism according to claim 1 or 2, wherein the operating force, which accompanies the raising of the seedling planting device, is stored in the left and right divided parts. Or, it acts as a rotating operation force toward the working position, and the operating force accompanying the lowering of the seedling planting device acts as a rotating operation force toward the opposite position on the left and right divided parts. It is configured to be operable, and its operation and effects are as follows.

According to a fourth feature of the present invention (claim 4), according to claim 1 or 2, the clutch mechanism is provided between a member on the link mechanism side and a member on the operation mechanism side.
An engaging member that can be engaged and disengaged so as to be in the engaged state in the engaged state and in the disengaged state in the disengaged state is provided. The operation and effects are as follows.

According to a fifth aspect of the present invention, as described at the beginning, a seedling planting apparatus which is supported on a traveling machine body via a link mechanism driven up and down by an actuator so as to be able to move up and down is provided in a lateral direction. A rice transplanter that can be divided between the working position and the storage position by dividing the divided position between the working position and the storage position by forming the divided position freely around the axis in the vertical position. , An operating mechanism for transmitting a turning power around the axis of the vertical posture to at least one of the left and right divided parts to change the posture of the divided part, and storing an operating force of the actuator. In that it has a power storage means and forms a transmission system for transmitting the operating force from the power storage means to the operating mechanism.
The effects are as follows.

A sixth feature (claim 6) of the present invention is that, in claim 5, the storage means is formed of a spring,
The point that it has an operation system for storing the lifting operation force at the time of lifting operation of the seedling planting device in the storage means, its operation, and,
The effects are as follows.

According to the first feature, for example, when the seedling planting apparatus is folded, the clutch mechanism is set to the on state and then the actuator is used to raise or lower the seedling planting apparatus. As a result of the driving force from the actuator being transmitted to the operating mechanism via the clutch mechanism, at least one of the left and right divided parts is turned toward the storage position by rotation about the vertical axis, and the seedling planting device is moved. This eliminates the need for a special actuator for folding. In other words, since a powerful actuator for raising and lowering the seedling planting device is used, the posture of the divided material can be switched with a sufficient driving force, and a complicated operation is performed when transmitting the driving force for performing the posture switching. It is only necessary to switch the clutch mechanism.

According to the second feature, when the attitude of the divided object is switched, the controller operates the clutch mechanism only by operating the switch, and thereafter controls the actuator to drive the actuator. The posture of the divided object is switched by force, and the clutch mechanism is operated to be disengaged thereafter, so that the operator does not need to perform complicated operations.

According to the third feature, for example, the operating mechanism is configured such that when the actuator is actuated to the side where the seedling planting device is raised, a turning operation force in a direction in which the seedling planting device is folded is applied. In such a case, when restoring the seedling planting apparatus to the working posture, the actuator may be operated on the side where the seedling planting apparatus is lowered. In other words, it is possible to fold the seedling planting device into the storage position and restore it to the working position only by switching the operation direction of the actuator without having a complicated transmission system such as switching the rotation direction in a gear system. Become.

According to the fourth feature, since the clutch mechanism is configured to be engaged and disengaged, the transmission is more reliable than that of the friction type clutch, and the link mechanism operates with a large stroke by the driving force of the actuator. Since the power is extracted from the power supply, a sufficient operation amount can be obtained.

According to the fifth feature, for example, when the seedling planting device is folded, at least one of the left and right divided parts is vertically oriented by transmitting the driving force from the storage means to the operating mechanism. The rotation about the axis leads to the retracted posture, so that there is no need to specially provide an actuator for folding the planting device. That is, since the strong driving force of the actuator for raising and lowering the seedling planting device is stored in the storage means, the posture of the divided object can be switched with a sufficient driving force, and the actuator is not operated during this posture switching. It will be done.

According to the sixth feature, the spring as the force accumulating means stores a force corresponding to the amount of elastic deformation caused by a compression operation, a pulling operation, a bending operation, and the like. The force can be easily taken out as a mechanical operating force, and a simple configuration is sufficient.

[Effects of the Invention] Therefore, a rice transplanter that can switch the posture of the divided parts of the seedling planting apparatus with a strong driving force, despite having a structure without special actuators, is rationally constructed. (Claim 1). Further, the seedling planting apparatus can be folded or restored to the working posture by an automatic operation by a simple operation (Claim 2). Can be set in a desired direction (Claim 3), and the posture of the divided object is changed by reliably transmitting a powerful and large stroke operating force (Claim 4). Furthermore, a rice transplanter that can switch the posture of the divided parts of the seedling planting device by the stored force even when the actuator cannot be driven, despite the structure without the special actuator, was rationally constructed. (Claim 5). Further, the energy storage means can be easily constituted by the spring (claim 6).

[0019]

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.

A raising / lowering lever 10 is provided on the right side of the driver's seat 7 for controlling the raising and lowering of the seedling planting apparatus A and the on / off operation of 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, the seedling placement apparatus A includes a seedling table 13 on which a mat-shaped seedling W is placed, and the 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 is formed by connecting the rear ends of a top link 9T at an upper position and a pair of left and right lower links 9L and 9L at a lower position 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 position in the left-right direction of the upper frame 21 and the lower frame 22 constituting the main frame of the seedling 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 power from the power transmission shaft 12 is transmitted via an intermediate shaft 12A is provided with an output shaft 36 for branching and extracting 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, a round pipe-shaped engaging member 5 is provided at the front position 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 placement apparatus A is in the working posture, in order to maintain this working posture, the artificially operated 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, 1R 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. 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, 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, 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.

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 FIGS. 16 and 17, the upper frame 21 constituting the main frame is sandwiched between a pair of upper and lower support plates 85, 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 electric cylinder 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 rearward of 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 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 and switched to the storage position, the folding lamp 102 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 of the leveling float 18 is sufficiently spaced upward from the ground on the flat surface of the rice transplanter on which 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 to blink the confirmation lamp 107 (# 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 planting apparatus 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 the 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 planting device 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 device A reaches the upper limit due to the driving force of the hydraulic cylinder 8, the control device 108 uses 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 prompts 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 retracted 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 planting device 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 based on 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 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.
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 transplanter A is lowered to the set height by the driving force of the hydraulic cylinder 8, the first coupling 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 the seedling planting apparatus A is switched from the working posture to the stowed posture and from the stowed posture to the working posture, the raising and lowering driving force of the seedling planting device 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 at a position separated 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.

[Other Embodiments] In addition to the above-described embodiment, the present invention stores the driving force of an actuator for raising and lowering the seedling planting apparatus A in the storage means as follows, and divides the driving force by this driving force. It is also possible to configure to switch the attitude of the objects AL and AR. In the following different embodiments, those having the same functions as those of the above-described embodiments are denoted by the same reference numerals and symbols.

That is, as shown in FIGS. 41 to 43, the operating member 75 connected to the top link 9T of the link mechanism 9
A long hole 75C along the longitudinal direction is formed in the support shaft 11.
The pin 117 provided at the swinging end of the first arm member 116 swinging integrally with the shaft 5 is engaged with the elongated hole 75C, and the support shaft 11 is rotated.
One end of a coil spring 119 as an accumulator is connected to a second arm member 118 which swings integrally with the arm 5, and the coil spring 119 is engaged with the second arm member 118 in a state where the coil spring 119 is operated in a pulling direction. The drive shaft 12 includes a stopper 120 for preventing rotation of the shaft 115, and the rotational force from the support shaft 115 is transmitted via an occlusal clutch 121.
A system in which a third arm member 123 is formed so as to be able to swing integrally with the second member 2, and the swing end of the third arm member 123 is operated to rotate the divided parts AL and AR through the same operating mechanism as in the above-described embodiment. Link to

When the planting device A is switched to the retracted position in this configuration, the hydraulic plant 8 raises the planting device A with the clutch 121 set to the disengaged state as shown in FIG. As a result, as shown in FIG. 35, the second arm member 118 reaches the position where the second arm member 118 is locked by the stopper 120 while the coil spring 119 is pulled and operated by the rotating force transmitted from the first arm member 116 to the support shaft 115. The coil spring 119 stores a force based on the operation of the hydraulic cylinder 8.

Next, as shown in FIG.
Is lowered, and in this state, when the clutch 121 is engaged to release the locking by the stopper 120, the coil spring 1 is released.
19 stores the force stored in the second arm member 118 and the support shaft 11.
5, transmitted to the system for rotating the divided parts AL and AR via the clutch 121 and the third arm member, respectively, and rotating the divided parts AL and AR of the seedling planting apparatus A to the storage position. ing.

Also, in the present invention, instead of the above-described embodiment, all the coupling mechanisms and the occlusal clutch are configured to be electrically controllable, so that folding and restoration can be automatically performed without manual operation by an operator. It is possible to configure so that the seedling planting device A
It is also possible to configure the operation system such that the seedling planting device A is restored by raising the seedling planting device A.

[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;

FIG. 41 is a schematic view showing a transmission system in another embodiment.

FIG. 42 is a schematic view showing a state where a force is stored in a spring in another embodiment.

FIG. 43 is a schematic view when the seedling planting device is retracted by the force of a spring in another embodiment.

[Explanation of symbols]

 Reference Signs List 3 traveling machine body 8 actuator 9 link mechanism 108 control device 119 storage means A seedling planting device AL, AR split C clutch mechanism

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

Claims (6)

[Claims] An apparatus for raising and lowering a seedling plant is supported on a traveling machine body via a link mechanism driven and raised and lowered by an actuator. A rice transplanter configured such that each of the divided parts can be freely switched between a working posture and a stored posture by forming the divided parts so as to be freely changeable around the axis of the vertical posture, and at least one of the left and right divided parts. On the other hand, there is provided an operation mechanism for transmitting the rotational movement power about the axis of the vertical posture to change the posture of the divided product, and transmitting the elevating operation force of the seedling planting device to this operation mechanism. A rice transplanter having a clutch mechanism that can be switched between an engaged state and a disengaged state in which the raising / lowering operation force of the seedling planting device is shut off. 2. A switch for switching the posture of the left and right divided parts, and after setting the clutch mechanism to an on state based on the operation of the switch, controlling the actuator to control the operation of the seedling planting apparatus. 2. The rice transplanter according to claim 1, further comprising: a control device that moves up and down to change the posture of the left and right divided parts and then switches the clutch mechanism to a disengaged state. 3. The operating mechanism causes an operating force associated with the raising of the seedling planting device to act on the left and right divided parts as a rotational operating force toward a storage posture or a working posture,
The rice planting according to claim 1 or 2, wherein the rice planting device is configured to be capable of operating in a normal or reverse direction so that an operating force accompanying a lowering of the seedling planting device acts on the left and right divided parts as a rotational operating force toward a reverse orientation. Machine. 4. An engaging and disengaging operation in which the clutch mechanism is in the engaged state between the member on the link mechanism side and the member on the operating mechanism side in the engaged state and is in the disengaged state in the disengaged state. The rice transplanter according to claim 1, further comprising a free engaging member. 5. A seedling planting device is supported on a traveling machine body via a link mechanism driven up and down by an actuator so as to be able to move up and down freely. A rice transplanter configured such that each of the divided parts can be freely switched between a working posture and a stored posture by forming the divided parts so as to be freely changeable around the axis of the vertical posture, and at least one of the left and right divided parts. An operating mechanism for transmitting the rotational movement power about the axis in the vertical orientation to change the attitude of the divided object is provided on the other hand, and an accumulator means for storing the operating force of the actuator is provided. A rice transplanter that has a transmission system that transmits the operating force from the means to the operating mechanism. 6. The rice transplanter according to claim 5, wherein said power storage means is constituted by a spring, and further comprising an operation system for storing the lifting operation force at the time of raising / lowering operation of said seedling planting device in said power storage means.