JPH08242630A - Rice transplanter - Google Patents

Abstract

PURPOSE: To enable the smooth changeover from operating postures to housed postures by reasonably selecting an installation site of return springs for divided seedling planting device parts for performing rolling operations of a seedling planter in a divided type seedling planter. CONSTITUTION: This rice transplanter is obtained by installing a sliding unit 49 for driving the rolling of a seedling planter in a mobile machine body 3, pivoting frame members 20 on the second shaft centers X2 so as to enable the free shaking around the second shaft centers X2 relatively to a freely liftable and lowerable linking mechanism for the mobile machine body, further installing divided seedling planting device parts so as to enable the free shaking around the first shaft centers X1 at the tips of the frame members 20, constituting the divided seedling planting device parts so as to enable the changeover from operating postures to housed postures and installing return springs 51 for rolling over the sliding unit 49 and the first shaft centers X1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a left and right seedling planting device mounted on a traveling machine body and provided with at least a split seedling platform and a seedling planting mechanism for taking out seedlings from the split seedling platform. Along with the divided seedling planting device unit, the left and right split seedling planting device units are swung around their respective left and right rotation fulcrums, and a working posture in which the split seedling placement base unit follows the lateral direction of the machine body, The present invention relates to a rice transplanter in which the divided seedling placing base is configured to be switchable to a storage posture along the longitudinal direction of the machine body.

[0002]

2. Description of the Related Art The above rice transplanter has an advantageous structure in which the lateral width of the entire body can be made smaller in the retracted posture in which the divided seedling placing base portions are arranged along the longitudinal direction of the fuselage as compared to the working posture. Even in a rice transplanter having such a configuration,
For example, as disclosed in Japanese Patent Laid-Open No. 6-292419, it is desirable to equip the rolling mechanism of the seedling planting device. The rolling mechanism is configured such that the seedling planting device is capable of rolling operation with respect to the traveling machine body, and the sliding member belonging to the traveling machine body and the left and right split seedling planting device portions are respectively provided with left and right return springs. And the forced rolling operation of the seedling planting device is performed in the moving direction by moving the slide body from the reference position to the left or right.

[0003]

If a rolling mechanism based on such a seedling planting device that is not divided is applied to a split type seedling planting device, the split seedling planting device section will store the work posture and retract. Since the posture is changed between the posture and the posture, the locking part of the return spring that is stretched over the sliding body belonging to the traveling machine body and the split seedling planting device portion that changes the posture is not rationally selected. Then, it causes inconvenience when changing the posture.

An object of the present invention is to perform a rolling operation by selecting a linking portion between a split seedling planting device section and a return spring in a state in which the posture of the split seedling planting apparatus section is taken into consideration. Even so, the point is to provide a rice transplanter that can smoothly change the posture of the split seedling planting device.

[0005]

According to a characteristic configuration of the present invention, in the working posture, the seedling planting device is configured to be rollable with respect to the traveling machine body,
The sliding body belonging to the traveling machine body and the left and right split seedling planting device portions are connected by left and right return springs, respectively, and the seedling planting device is moved in the moving direction by moving the sliding body to one of the left and right from the reference position. It is configured so as to perform a forced rolling operation, and the connection portion of the return spring with the left and right split seedling planting device portions is set to the rotation fulcrum position, and the action and effect thereof are as follows. .

[0006]

That is, since the connection portion of the return spring with the left and right split seedling planting device portions is set to the rotation fulcrum position, the split seedling planting device portion rotates when the posture is changed. Even if the connection part is rotated about the fulcrum, the change of the connection part can be reduced. For example, when the connection part is set to a specific part of the split seedling planting device part apart from the rotation fulcrum, the connection part is displaced. Then, it may happen that the posture change of the split seedling planting device portion such as the erection length of the return spring is not smooth, but in the present invention, that point can be solved, and the posture change of the split seedling planting device portion can be performed. It can be done smoothly.

[0007]

As described above, the return spring can be smoothly changed to the retracted posture by a rational structure in which the linking portion of the return spring is adapted to the split type seedling planting device.

[Other Objects / Structures / Operations / Effects] (1) The object of the invention of claim 2 is to provide a structure capable of strengthening the attachment structure of the disconnecting tool in addition to the object of the invention of claim 1. The structure adopted for this purpose is the structure according to claim 1, wherein a frame member that is rotatable around a swing axis is provided with respect to the traveling machine body, and a swing tip portion of the frame member is provided. The rotation fulcrum is formed on, and while the divided seedling planting device portion is rotated about the rotation fulcrum, the split seedling planting device portion is configured to revolve around the swing axis. It is as follows.
In other words, both split planting device parts have a complicated structure of revolving while revolving, but the locking position of the return spring with respect to the split seedling planting device part is determined by the swing axis as the revolution axis. Since it is provided at the rotation fulcrum position that holds a certain length, the erection length of the return spring spanned between the sliding member and the rotation fulcrum does not change much, and the work posture without removing the return spring The posture can be smoothly changed from the storage posture to the storage posture.

(2) The object of the invention of claim 3 is, in addition to the object of the invention of claim 2, to provide a rice transplanter capable of appropriately operating the return spring. In the configuration according to claim 2, in the working posture, the sliding body and the rotation fulcrum are located on a line that is aligned in the lateral direction of the machine body, and the swing body is located at an intermediate position between the sliding body and the rotation fulcrum. In a state in which the moving shaft center is located and the rotation fulcrum is rotated around the swing shaft core to switch to the storage posture, the rotation fulcrum should be located on the rear side of the body of the swing shaft core. It is configured, and its effects are as follows. In other words, the extension length of the return spring is the longest because the connecting portion, the rotation fulcrum, and the swing axis center line up in a substantially straight line in the state of the working posture. Since it is closer to the core, it becomes shorter. As a result, in the retracted posture in which the biasing force is not required, the restoring force is not exerted, and it can be exerted only in the required work posture.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an engine 4 is mounted on the front part of a traveling machine body 3 provided with a steering type driven front wheel 1 and a driving type rear wheel 2, and at the rear part of the traveling machine body 3. A hydrostatic continuously variable transmission (HST) 5 to which power from the engine 4 is transmitted, and a transmission case 6 are arranged, and a driver's seat 7 is arranged at the center of the traveling body 3.
The seedling planting apparatus A is connected to the rear end of the traveling machine body 3 via a link mechanism 9 that is driven up and down by a hydraulic cylinder 8 to form a riding type rice transplanter. An elevating lever 10 is provided on the right side of the driver's seat 7 to control the raising and lowering of the seedling planting device A and to engage and disengage the planting clutch, and the left side of the driver's seat 7 operates the continuously variable transmission 5. The gear shift lever 11 is provided.

The seedling planting device A has a mat-shaped seedling W placed thereon, and its upper end side is inclined to the front side of the traveling machine body 3, and a transmission case 12 via a transmission shaft 12 from a transmission case 6 with a posture. A pair of left and right transmission cases 14, 14 to which power is transmitted,
A rotary case 16 that rotates by the power transmitted from the transmission case 14 via the chain case 15, a pair of planting arms 17 provided in the rotary case 16 one by one,
It is equipped with a plurality of leveled floats 18 for eight-row planting, and is equipped with a fertilizer application device 19 having a hopper, a feeding mechanism, a grooving device, etc. From the bottom edge of the seedling W, the seedling planting arm 17 is 1
At the same time as cutting out each plant and planting it in a field scene, the fertilizer application device 19 supplies fertilizer to the field scene near the planted seedling.
The rotary case 16, the planting arm 17, and a system for driving them constitute a seedling planting mechanism.

As shown in FIG. 2 to FIG. 5, in this rice transplanter, the seedling planting device A is freely divided into four sections at the right and left central positions, and each divided seedling planting device section AL. , A
R is rotatably supported around the first axial center X1 in the vertical posture with respect to the frame member 20 constituting the divided seedling planting device portions AL and AR, and further at the rear end of the link mechanism 9. The frame member 20 is supported rotatably around the second axis X2 in the vertical posture with respect to the main frame 21 provided, and the seedling planting device 9 is operated as shown in FIG. In the state in which the posture is set, the upper ends of the first axis X1 and the second axis X2 are tilted toward the front side of the traveling machine body 3 with reference to the vertical direction.

The link mechanism 9 is composed of a top link 9T arranged at an upper part and a lower link 9L arranged at a lower part, and is connected to a rolling boss 22 connected to a lower end part of a vertical frame 9A supporting respective rear ends thereof. Connecting plate 23 that can be freely rolled around the rolling axis Y in the front-back orientation
The main frame 21 that supports an upper plate 21A and a lower pipe 21B with respect to the connecting plate 23.
And a circular pipe shape with respect to the boss member 20A that is rotatably fitted to the second shaft 24 arranged coaxially with the second shaft core X2 at both left and right ends of the main frame 21. A frame member 20 is fixedly mounted to rotatably support the frame member 20 about a second axis X2, and the outer ends of the frame members 20 and 20 are coaxial with the first axis X1. The support frame 27 in the shape of a square pipe is attached to the first shaft 25 arranged in
This support frame 2 is rotatably supported around the axis X1.
7, the left and right transmission cases 14 and the chain case 15 are fixedly installed, and further the divided seedling planting device section A
Left and right sliding rails 28, 28 for supporting the seedling stand 13 are provided on the upper surfaces of the pair of chain cases 15, 15 of L and AR, respectively.

As shown in FIG. 4, the left transmission case 14
The screw shaft 29, which is rotationally driven by the power of
And a bearing member 30 at the end of the support frame 27 on this side, and the moving force of a top (not shown) engaged in the spiral groove of the screw shaft 29 is applied to the left split seedling. The moving member 31 for transmitting to the placing table portion 13L is provided to configure a lateral feeding mechanism for the seedling placing table 13. In the seedling placing table 13, the left and right divided seedling placing table portions 13L and 13R are respectively connected to the connecting member D (see FIG. 1).
1 and see FIG. 12), the power from the transverse feed mechanism causes the slide rails 28, 28 to integrally reciprocate in the lateral direction.

A shaft body (not shown) to which the power from the transmission shaft 12 is transmitted is rotatably supported by the rolling boss 22 coaxially with the rolling shaft core Y, as shown in FIG.
As shown in (a) and (b), the power of this shaft is bevel case 32, and a pair of output shafts 3 provided in bevel case 32.
A transmission system is formed to transmit to the left and right transmission cases 14 and 14 via 3, 33, the clutch mechanism 34, and the intermediate shaft 35, respectively. The clutch mechanism 34 includes a clutch shaft portion 34A formed in a spline shape at the end of the intermediate shaft 35, and a shift member 34B externally fitted to the output shaft 33 so as to be engageable with and disengageable from the clutch shaft portion 34A. This shift member 34
And a spring 34C for urging B toward the clutch shaft portion 34A.

When the clutch mechanism 34 is engaged, the clutch shaft portion 34A and the shift member 34B are engaged with each other only at a specific rotational phase. As shown in FIG. 6B, the clutch shaft portion 34A and the shift member are engaged during the disengagement operation. By separating from 34B,
The intermediate shaft 35 and the output shaft 33 of the bevel case 32 are configured to be completely separated. The bevel case 32 is internally equipped with a transmission system having a bevel gear (not shown) for branching and outputting the power from the traveling machine side to the two output shafts 33, 33, and the intermediate shaft 35 of the frame member 20. It is supported so as to maintain a lateral position with respect to the system, and is configured with a universal joint.

As shown in FIGS. 7 to 9, the second shaft 24 is non-rotatably provided on the main frame 21, and the first shaft 25 is non-rotatably provided on the frame member 20. Second shaft 24
The second sprocket X2 and the main sprocket 3 on the coaxial center at the upper position of
6 is fixed, and the second shaft 24 has a second end at the upper end position.
A plate-shaped rotating member 37 is provided so as to be rotatable around the axis X2. In addition, the bracket 26 is rotatably supported with respect to the first shaft 25, and the hollow extension shaft 53 is integrally rotated with respect to the bracket 26 so as to integrally rotate with the first shaft X.
A fixed sprocket 38 having a number of teeth half that of the main sprocket 36 is arranged on the extension shaft 53, and the driven sprocket 38 is extended between the main sprocket 36 and the driven sprocket 38. Is wound.

The left and right rotating members 37, 37 are arranged at a higher level than the left and right frame members 20, 20, and
The frame members 20 and 20 are connected and fixed via the rods 40 and 40 in a suspended posture so as to rotate in association with the rotational force of the frame members 20, and the left and right rotating members 37 and 37 are rotated in opposite directions. , A pair of wires 4 in a crossed position between each
4,44 are stretched. Further, the sector gear 41 arranged coaxially with the left second axial center X2 is fixed to the frame member 20 side, and the pinion gear 42 that meshes with the sector gear 41 is provided on the main frame 21 side. The electric motor 43 which drives is provided.

A turnbuckle 40A is interposed in the middle of the rod 40, and one end of the rod 40 has a rotating member 37.
Is fixed by welding to the frame member 20, and the other end of the rod member 40 is screwed to the frame member 20 through a supporting member 45 fixed to the frame member 20. By connecting the two members, the frame member 20 is suspended from the rotating member 37 to improve the strength. Further, a length adjusting portion 44A for adjusting the length in a screw type is provided at an intermediate portion of the wire 44.

With this configuration, when the seedling planting apparatus A is stored, the connecting member D is disconnected and the right side of the right side is released while the seedling planting apparatus A is raised to a level spaced from the ground. The divided seedling placing base 13R is artificially moved to the right-side moving end, and the movement of the divided seedling placing base 13R on the slide rail 28 is blocked by a lock means (not shown) (in this state, 9 posture is reached, and the left and right split seedling placing base portions 13R,
The distance between each of the 13L reaches approximately 30 centimeters).

Next, as shown in FIG. 8, the clutch mechanism 34 is artificially separated, and the electric motor 43 is operated by a predetermined operation.
Is driven to rotate the sector gear 41, and the rotation of the sector gear 41 causes the left frame member 20 to rotate. The rotation of the left frame member 20 rotates the left rotation member 37 connected by the rod 40, and the rotation of the left rotation member 37 is transmitted to the right rotation member 37 via the wire 44 to rotate the right rotation member 37. The moving member 37 rotates, and this rotation causes the right frame member 20 to reverse. That is, the respective frame members 20, 20 are interlocked with each other by the force from the left and right rotating members 37, 37 and the pair of wires 44, 44 to cause the second axis X.
2, X2, the outer end side of which rotates toward the rear side, and at the same time as this rotation, the system supported by the brackets 26, 26 around the first axis X1, X1 is the main sprocket 36, the driven Due to the force from the sprocket 38 and the chain 39, the rotation speed of the frame members 20, 20 is twice as fast as the rotation direction of the frame members 20, 20. Rotate toward the side.

When turning to this storage posture, as shown in FIG. 13, although the corners 13E, 13E at the upper inner ends of the left and right split seedling placement bases 13L, 13R are close to each other, the split seedling placement is seen in a plan view. Since the base portions 13L and 13R rotate at positions separated from each other, the rotation is possible while avoiding contact between the corner portions 13E and 13E. Also, the clutch mechanism 34 is separated and the intermediate shaft 35 is expanded and contracted. This rotation is allowed with and.

When the divided seedling planting device portions AL and AR reach the storage posture, the driving of the electric motor 43 is stopped (the control operation is not described in detail) and the storage is completed. In this state,
As shown in FIG. 4, the left and right divided seedling placing base portions 13L and 13
At a position where R is close to the traveling body 3 side on the sliding rails 28, 28, the upper end edges of the sliding rails 28 reach a posture in which the upper end edges are parallel to each other. Therefore, the weight of the entire seedling planting apparatus A is moved to the traveling body 3 side. In addition to improving the weight balance of the entire rice transplanter,
The lateral dimension of the seedling planting apparatus A is reduced.

Further, in this retracted posture, as described above, the split seedling placing portions 13L and 13R are switched to the standing posture as shown in FIG. 16 by the rotation around the first axis X1 in the inclined posture. The lateral dimension of the seedling planting device A is further reduced, and as described above, by rotating the frame member 20 around the second axis X2 in the inclined posture, as shown in FIG. As a result of lifting the rear side of the traveling machine body 3 of the device parts AL and AR upward, it is possible to reduce the size in the front-back direction in plan view, and further move the center of gravity of the entire rice transplanter forward to improve the weight balance. At the same time, the rear end of the seedling planting device A in the retracted posture does not contact the ground during traveling.

Then, when the seedling planting device A in the storage posture is restored to the working posture, the electric motor 43 is rotated in the reverse direction so that the divided seedling planting device portions AL and AR rotate in the opposite direction to the above. As a result, the seedling planting apparatus A in the retracted posture is changed to the work posture by the operation opposite to the above, and when the posture changing causes the seedling planting apparatus A to reach the posture shown in FIG. The drive is stopped (control operation is not described in detail), the clutch mechanism 33 is connected, and the right side seedling placing base portion 13R
To the side of the split seedling stand base 13L on the left side for 13
By connecting L and 13R with the connecting member D, a workable state is reached.

Next, rolling control of the seedling planting apparatus A will be described. As shown in FIG. 2, right and left vertical frames for supporting the seedling placing table 13 are erected, and the vertical frames extend the above-mentioned extension shaft 53. As described above, the driven sprockets 38 are fixed to the left and right vertically oriented frames 53, 53. On the other hand, as shown in FIGS. 3 and 16, the vertical frame 9 of the lifting link mechanism 9
A support bracket 46 is integrally erected on A, a spiral shaft 47 is installed on the support bracket 46, and a guide rod 48 is installed in parallel with the spiral shaft 47 so that a sliding body 49 is installed on the spiral shaft 47. The sliding body 49 is configured to be movable left and right by linking through a top member (not shown). One end of the link rod 50 is hooked and locked to the bracket 49A of the sliding body 49, and a hook is locked in a lock hole formed in the other end of the link rod 50 to return the spring 51.
Further, the other end of the return spring 51 is locked to a bracket 53A fixed to the vertically oriented frames 53, 53. With such a configuration, by moving the sliding body 49 to the left and right, the vertically oriented frame 5 is moved in the moving direction.
3,53, the seedling planting device A is configured to roll around the shaft Y. In the figure, reference numeral 52 denotes a rolling motor that rotationally drives the spiral shaft 47.

The bracket 53 is attached to the left vertical frame 53.
B is extended, and the bracket 53B is provided with a gravity type inclination detecting means 54 for detecting the horizontal inclination of the seedling planting apparatus A with respect to the horizontal reference plane. The rolling motor 52 is driven based on a command from a control means equipped with a microcomputer so that the tilted posture becomes the set posture, the slide body 49 is driven, and the seedling planting apparatus A is swung in the driving direction. Rolling control is performed.

In the working posture, the locking portion of the linking rod 50 with respect to the sliding body bracket 49A and the first axis X1 as the rotation fulcrum are set so as to be aligned substantially in the lateral direction of the machine body, and the locking portion thereof is set. The second axis X2 is set between the first axis X1 and the first axis X1, and from this state, the left and right split seedling planting device parts AL and AR are rotated about the first axis X1 and It revolves around the biaxial core X2 and takes the stored posture. In the retracted posture, the first axis X1, X1 is arranged to be positioned on the rear side of the body of the swing axis X2, X2. With such a configuration, the extension length of the return spring 51 becomes shorter as the length of the return spring 51 is switched to the storage posture side by the length that is the longest in the working posture.

[Other Embodiments] In addition to the above-described embodiments, the present invention can be configured such that, for example, the storing operation of the seedling planting device is performed manually, and the seedling planting of 10 rows or more is carried out. It can also be applied to a device. For installing the return spring 51, refer to
It is possible to adopt a structure in which only the connecting rod 50 is installed and the linking rod 50 is not interposed. Regarding the linkage of the return spring 51 at the rotation fulcrum X1, it is hooked and locked to the bracket 53A extending from the vertical frame 53, but the bracket 5 is attached to the rotation fulcrum X1.
A locking hole for the return spring 51 of 3A may be provided. The configuration for switching the postures of the divided seedling planting device units AL and AR may be performed only by turning around the turning fulcrum X1. As a result, the structure of the link mechanism relating to the rotation becomes easy.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Overall side view of rice transplanter

FIG. 2 is a front view showing a rolling drive structure.

3A is a plan view showing a state of the return spring in a working posture, and FIG. 3B is a plan view showing a state of the return spring in a storage posture.

FIG. 4 is a plan view of the transmission system of the seedling planting device in a working position.

FIG. 5 is a plan view of the transmission system of the seedling planting device in the retracted posture.

FIG. 6 (a) is a rear view of the clutch mechanism in an engaged state, and (b) is a rear view of the clutch mechanism in a disengaged state.

FIG. 7 is a plan view of a work posture storing means.

FIG. 8 is a plan view of the storage means in the storage posture.

FIG. 9 is a rear view of the main frame and a part of the frame member with a part notched.

FIG. 10 is a side view showing the postures of the first axis and the second axis.

FIG. 11 is a plan view of the rice transplanter showing a work posture.

FIG. 12 is a plan view of the rice transplanter with the seedling placing table being divided.

FIG. 13 is a plan view of a rice transplanter in which the seedling planting device is divided and rotated.

FIG. 14 is a plan view of the rice transplanter with the seedling planting device set in the retracted posture.

FIG. 15 is a side view of the seedling planting device in a stored state.

FIG. 16 is a rear view of the seedling planting device in a stored state.

[Explanation of symbols]

 3 Traveling aircraft 13L, 13R Split seedling mounting base 20 Frame member 49 Sliding body 51 Returning means A Seedling planting device AL, AR Divided seedling planting device part X1 Rotation fulcrum X2 Swing shaft core

Claims (3)

[Claims] 1. A seedling planting device (A) attached to a traveling machine body (3), at least a divided seedling placing base portion (13L), (1).
3R) and a seedling planting mechanism for removing seedlings from the split seedling platform (13L), (13R), and left and right split seedling planting device units (AL), (AR) and The left and right split seedling planting device portions (AL) and (AR) are swung around the left and right rotation fulcrums (X1) and (X1), respectively, so that the split seedling placement base portions (13L) and (13R) are A work posture along the left-right direction of the machine body, the divided seedling placing base portion (13L),
(13R) is a rice transplanter configured to be switchable to a retracted posture along the machine longitudinal direction, wherein the seedling planting device (A) is rolled with respect to the traveling machine body (3) in the working posture. A sliding body (49) which is configured to be operable and belongs to the traveling machine body (3).
And the left and right split seedling planting device parts (AL) and (AR) are connected by left and right return springs (51), respectively, and the sliding body (4)
9) is configured to move the seedling planting device (A) forcibly rolling in the moving direction by moving the seedling planting device (A) from the reference position to the left or right, and the left and right split seedling planting device parts (in the return spring (51) ( A rice transplanter in which a connecting portion with (AL) and (AR) is set to the rotation fulcrums (X1) and (X1). 2. A frame member (2) rotatable about the swing axis (X2), (X2) with respect to the traveling machine body (3).
0) and (20) are provided, and the rotation fulcrum (X) is attached to the swinging tip of the frame members (20) and (20).
1) and (X1) are formed, and the divided seedling planting device section (A
The L) and (AR) are configured to revolve around the swing shaft cores (X2) and (X2) while rotating around the rotation fulcrums (X1) and (X1). Rice transplanter. 3. The sliding body (4) in the working posture.
9) and the rotation fulcrum (X1) are positioned on a line aligned in the machine lateral direction, and the swing axis (X2) is located at an intermediate position between the sliding body (49) and the rotation fulcrum (X1). Position, and set the rotation fulcrum (X1) to the swing axis (X2).
The rice transplanter according to claim 2, wherein the rotation fulcrum (X1) is arranged to be located on the rear side of the body of the swing axis (X2) in a state of being rotated around and switched to the storage posture. .