JP2002084829A - Rolling operation apparatus for implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a cost required for producing a rolling operation means and to miniaturize the rolling operation means. SOLUTION: This rolling operation apparatus is equipped with a rolling operation means 11 for carrying out a rolling operation of a ground operation apparatus in a longitudinal direction relatively to a traveling machine body around a shaft center, with a motor 13 changeable from a normal to a reverse direction and a rotor A driven by the motor 13 at the side of the traveling main body, with a left wire 17 for raising the left side of the ground operation apparatus and rolling the ground operation apparatus by taking up the ground operation apparatus on the rotor A with the normal rotation of the rotor A and a right wire 17R for raising the right side of the ground operation apparatus and rolling the ground operation apparatus by taking up the ground operation apparatus on the rotor A with the reverse rotation of the rotor A. The rotor A is furnished with a projection 22 wide in the rotation direction and with limit switches 23L and 23R for rolling limitation detection which are pressed and operated by the projection 22 when the projection 22 is rotated to a rolling limit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground operating device such as a seedling planting device, which is rotatably connected to a traveling machine body around a longitudinal axis, and provided with rolling operation means for rolling the ground operating device. The present invention relates to a rolling operation device for a working machine such as a rice transplanter.

[0002]

2. Description of the Related Art In a conventional rolling operation device for a working machine, a rolling operation means is, for example, disclosed in Japanese Patent Laid-Open No. 10-136.
As disclosed in Japanese Patent Publication No. 720-720, etc., a screw shaft disposed in the left and right central portion on the traveling body side, a forward / reverse rotation motor driving the screw shaft around its axis, and a screw shaft. With the top member and a pair of left and right coil springs extending from the top member to the left and right of the ground working device, the screw shaft is switched between forward and reverse rotation by operation of the forward / reverse rotation motor to feed the top member left and right. Thus, a screw feed type in which a ground operation device is rolled through left and right coil springs has been configured.

[0003]

However, according to the above-mentioned prior art, it is necessary to increase the processing accuracy of the screw shaft and the top member so as to prevent rattling between the screw shaft and the top member. However, the cost of manufacturing the rolling operation means has been increased due to the increase in the processing cost. In addition, since a long screw shaft capable of performing a rolling operation in a predetermined range of the ground working device is employed, there is a problem in that the rolling operation means is increased in size.

An object of the present invention is to reduce the cost required for manufacturing the rolling operation means and reduce the size of the rolling operation means.

[0005]

The features, functions and effects of the rolling operation device for a working machine according to the present invention according to claim 1 are as follows.

[Characteristics] In a working machine having a rolling operation means for rollingly connecting a ground working device to a traveling machine body around a longitudinal axis and providing a rolling operation to the ground working device, A motor capable of switching between forward and reverse rotation and a rotating body driven by this motor are provided, and the rotating body is taken up by the rotating body in accordance with the forward rotation of the rotating body. A left wire to be rolled with respect to the rotating body, and a right wire to be pulled up on the right side of the ground working device by being taken up by the rotating body with the rotation of the rotating body to roll the ground working device with respect to the traveling machine body. The body is provided with a protrusion for detecting the rolling limit, and when this protrusion rotates to the left rolling limit, the protrusion is pressed against this protrusion. A limit switch and a limit switch for detecting a right rolling limit pressed by the protrusion when the protrusion rotates to the right rolling limit are provided to constitute the rolling operation means, and as the protrusion, in a rotational direction. The point is that a wide thing is provided.

[Operation] When the rotating body is rotated by the motor,
The rolling operation of the ground working device can be performed via wires extending from the rotating body to the left and right of the ground working device. In other words, compared to a case in which the rolling operation means is of a screw feed type in which the top member is screwed by the operation of the motor, a screw shaft and a top member that require high processing accuracy are not used, so that processing costs are reduced. Can be greatly reduced, and the cost required for manufacturing the rolling operation means can be reduced. In addition, since a long screw shaft is not used, the size of the rolling operation means can be reduced.

In addition, when the rolling operation means is of a screw feed type as in the prior art, the motor is interlocked to a screw shaft which is provided at the center of the traveling body at the left and right sides and is oriented left and right. While it is necessary to dispose a relatively heavy motor in a state where it is deviated to one of the left and right ends of the screw shaft, in the present invention, a relatively heavy motor is disposed in the center of the left and right due to its configuration. Since it can be installed, it can be advantageous in balancing the left-right balance of the aircraft.

In addition, by providing the projection and the left and right limit switches, when the projection acts on the limit switch, the motor is stopped to prevent the ground work apparatus from rolling beyond the rolling limit. The projections are wide in the direction of rotation, so that even if the rotating body overruns, the projections are prevented from exceeding the limit switch to maintain the limit switch operating state due to the projections. When the rolling is performed to the rolling limit, the motor is reliably stopped to prevent the ground working device from being excessively rolled.

[Effect] Accordingly, the manufacturing cost and the size of the rolling operation means can be reduced and the left-right balance of the body can be balanced, and the excessive rolling control of the ground working device can be reliably prevented. Became.

The features, operations and effects of the rolling operation device for a working machine according to the present invention according to claim 2 are as follows.

[Features] In a working machine having a rolling operation means for rollingly connecting the ground working device to a traveling machine body around a longitudinal axis and providing a rolling operation to the ground working device, A motor capable of switching between forward and reverse rotation and a rotating body driven by this motor are provided, and the rotating body is taken up by the rotating body in accordance with the forward rotation of the rotating body. A left wire to be rolled with respect to the rotating body, and a right wire to be pulled up on the right side of the ground working device by being taken up by the rotating body with the rotation of the rotating body to roll the ground working device with respect to the traveling machine body. When the rotating body rotates to the left rolling limit, the input gear portion meshing with the driving gear driven by the motor of the body A left-mesh release unit that releases the meshing of the ruler and stops the rotation of the rotating body, and a right meshing that releases the normal meshing with the drive gear and stops the rotation of the rotating body when the rotating body rotates to the right rolling limit. The rolling operation means is constituted by forming a release portion.

[Operation] When the rotating body is rotated by the motor,
The rolling operation of the ground working device can be performed via wires extending from the rotating body to the left and right of the ground working device. In other words, compared to a case in which the rolling operation means is of a screw feed type in which the top member is screwed by the operation of the motor, a screw shaft and a top member that require high processing accuracy are not used, so that processing costs are reduced. Can be greatly reduced, and the cost required for manufacturing the rolling operation means can be reduced. In addition, since a long screw shaft is not used, the size of the rolling operation means can be reduced.

In addition, when the rolling operation means is of a screw feed type as in the prior art, the motor is interlocked and connected to a screw shaft disposed at the center of the traveling body at the left and right sides in the left-right direction. Whereas it is necessary to dispose a relatively heavy motor in a state where it is deviated to the left and right ends of the screw shaft, in the present invention, a relatively heavy motor is disposed in the center of the left and right due to its configuration. Since it can be installed, it can be advantageous in balancing the left-right balance of the aircraft.

In addition, a left mesh release unit and a right mesh release unit are formed on the input gear that meshes with the drive gear driven by the motor, and when the rotating body rotates to the left rolling limit, the normal gear for the drive gear is formed. Since the meshing is released to stop the rotation of the rotating body, and when the rotating body rotates to the right rolling limit, the regular meshing with the drive gear is released to stop the rotation of the rotating body,
It is possible to prevent the ground working device from rolling beyond its limit.

[Effects] Therefore, the manufacturing cost and the size of the rolling operation means can be reduced and the left-right balance of the body can be balanced, and the excessive rolling control of the ground working device can be reliably prevented. Became.

The features, operations and effects of the rolling operation device for a working machine according to the present invention according to claim 3 are as follows.

[Features] In the rolling operation device for a working machine according to the second aspect of the present invention, the motor is stopped when the rotation stop state of the input gear portion is continued for a set time or more. At one point.

[Operation] When the normal engagement with the drive gear is released and the rotation stop state of the input gear section is continued for a set time or more, the motor is stopped, so that seizure of the motor is prevented. Can be.

[Effects] Accordingly, it is possible to prevent the motor from burning while stopping the rotating body to prevent excessive rolling of the ground working device.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] As shown in FIG. 1, a riding type rice transplanter, which is an example of a working machine, raises and lowers by operating a hydraulic lift cylinder 2A at the rear of a traveling machine body 1. A moving link mechanism 2 is connected, and a seedling planting device 3A, which is an example of the ground working device 3, is attached to a vertical link 2B provided at the rear end of the link mechanism 2 by a longitudinal axis P with respect to the traveling machine body 1. It is configured by being connected to the periphery so as to be freely rollable.

The traveling body 1 transmits power from an engine 4 mounted on a front portion thereof to a pair of left and right front wheels 6 and rear wheels 7 and the seedling planting device 3A after shifting the speed by a transmission 5. Is configured.

As shown also in FIGS. 2 and 3, the seedling placement device 3A uses a power from the traveling machine body 1 to move a seedling rest 8 formed so as to place eight rows of mat-like seedlings. It is configured for eight-row planting, in which the seedlings are moved back and forth by a constant stroke, and the corresponding planting mechanism 9 cuts out the seedlings one by one from the mat-like seedlings of each row and cuts the seedlings one by one to plant in the field. Note that reference numeral 1
Numeral 0 is a leveling float for leveling a seedling planting location by the planting mechanism 9 in advance. The seedling rest 8 and the leveling float 10 are supported by a frame F that is rotatably connected to the vertical link 2B. The seedling rest 8 comprises a main seedling rest 8A on which six rows of seedlings are placed and a sub-seedling rest 8B on which two rows of seedlings are placed. It is switchable between an operation position connected to the side of the main seedling mounting portion 8A and a storage position in which the main seedling mounting portion 8A is stored overlapping with the upper end of the main seedling mounting portion 8A.
A is attached to A with a guide mechanism S for changing the posture without removing the sub-seedling 8B from the main seedling 8A. In other words, the seedling rest 8 is left and right unbalanced in weight, and a suspension spring TS for correcting left and right imbalance is interposed between the frame F and the vertical link 2B. Reference numeral 25 denotes a pair of left and right balance springs spanning from the base member 12 of the rolling operation means 11 to the left and right brackets 8a of the seedling mounting table 8.

As shown in FIGS. 2 and 6, the seedling planting device 3A is moved around the longitudinal axis P from the vertical link 2B of the link mechanism 2 on the traveling body 1 side to the left and right of the seedling planting device 3A. A rolling operation means 11 for performing a rolling operation is provided.

As shown in FIGS. 7 to 9, the rolling operation means 11 includes a worm reducer 1 attached to a base member 12 (member on the traveling body side) connected to the vertical link 2B.
A motor 13 with a 3A switchable between forward and reverse rotation and a rotating body A driven by the motor 13 are provided, and the seedling planting device 3 is wound around the rotating body A as the rotating body A rotates forward.
A left wire 17L for pulling up the left side of A and rolling the seedling planting device 3A with respect to the traveling body 1;
And a right wire 17R for rolling up the right side of the seedling planting device 3A and rolling the seedling planting device 3A with respect to the traveling machine body 1 by being taken up by the rotating body A with the reverse rotation of the rotating body A. A protrusion 22 for limit detection is provided, and when the protrusion 22 rotates to the left rolling limit, the protrusion 22 is pressed to generate a left rolling limit signal to issue a left rolling limit signal. A right limit switch 23R that issues a right rolling limit signal by being pressed by the projection 22 when the motor rotates to a maximum is provided, and a control device 21 is provided.

The rotator A is engaged with a drive gear 13B driven by the motor 13, and is connected to an input gear 14
And a pulley portion 16 for winding a wire, which is interlocked to the input gear portion 14 via a rotary shaft 15, and has two rows of guide grooves 16 on the outer periphery of the pulley portion 16.
a is formed.

The left wire 17L is connected to one of the guide grooves 16
a one end of which is fixed to the concave portion 16b formed in the pulley portion 16 while being wound around the bracket 8a, and the other end of which is disposed on the left side of the lateral reinforcing frame 8C in the seedling rest 8;
D is connected via a coil spring 18L. On the other hand,
One end of the right wire 17R is fixed to a concave portion 16b formed in the pulley portion 16 while being wound around the other guide groove 16a, and the other end is connected to a bracket 8D provided to the right of the reinforcing frame 8C by a coil spring. It is connected via 18R. The left and right coil springs 18L, 18
R is for keeping the right and left balance of the seedling planting apparatus 3A irrespective of the horizontal reciprocating movement of the seedling mounting table 8.

The control device 21 controls the motor 13 based on the detection value from the weight type inclination sensor 20 to maintain the seedling planting device 3A in a horizontal posture. As a result, the traveling machine 1
Is tilted from side to side, so that the seedlings can be stably planted by the seedling planting apparatus 3A at a desired planting depth.

In addition, when the control device 21 is instructed from one of the left and right limit switches 23L, 23R to reach the rolling limit on either the left or right of the seedling planting device 3A, the control device 21 performs rolling based on the command. The operation of the motor 13 is controlled so that the rolling operation of the seedling planting apparatus 3A is not performed on the side reaching the limit. Therefore, breakage of the rolling operation mechanism 11 due to the rolling operation of the seedling planting apparatus 3A exceeding the rolling limit can be avoided.

The protrusion 22 is formed integrally with the back surface of the pulley portion 16 and is formed to be wide in the rotation direction. That is, even when the rotating body A overruns due to gear backlash or the like, the limit switches 23L and 23R can be pressed.

Although not shown, the inclination sensor 20
Is disposed in the vicinity of the longitudinal axis P serving as a rolling fulcrum.
In comparison with the case where the seedlings are arranged at both left and right ends of A, erroneous detection of the inclination sensor 20 due to the rolling of the seedling planting apparatus 3A can be effectively suppressed.

[Second Embodiment] In the first embodiment, as shown in FIG.
When the gear rotates to the left rolling limit, the drive gear 13B
And a left mesh release unit L for releasing the normal meshing of the rotating body A to stop the rotation of the rotating body A, and releasing the normal meshing of the rotating gear A to the driving gear 13B when the rotating body A rotates to the right rolling limit. A right engagement canceling portion R for stopping rotation is formed. The left mesh release portion L and the right mesh release portion R are configured by making the gear tooth bottom shallow. In this case, the control device 21
When the stopped state of the rotating body A is continued for a set time, the motor 1
3, the motor 13 is stopped by turning off the power, and when the command in the opposite direction is output from the inclination sensor 20, the motor 13 is controlled to rotate in the opposite direction. In the second embodiment, the projection 22 may be implemented without having a large width in the rotation direction.

[Other Embodiments] Hereinafter, other embodiments of the present invention will be listed. The working machine may be a tractor or the like that is connected and equipped with a rotary tilling device or the like, which is an example of the ground working device 3, so that it can freely roll around the longitudinal axis P. The seedling planting apparatus 3A may be configured to be able to plant four, five, six, or ten plants. The rolling operation means 11 may be configured such that the wires 17L and 17R wound around and linked to the rotating body A are directly connected to the left and right sides of the seedling planting apparatus 3A. As the rolling operation means 11, one end of one wire is a left wire 17L and the other end is a right wire 17R.
It may be configured so as to be wound around the rotating body A and connected at both ends to the left and right sides of the seedling planting apparatus 3A. In this configuration, an annular guide groove may be formed in the rotating body A, or a spiral guide groove may be formed in the rotating body A. A guide groove around which the wires 17L and 17R are wound and linked may be formed in the input gear portion 14 so as to function as the rotating body A. The motor 13 may include a speed reducer 13A formed of a spur gear, a bevel gear, or the like. The protrusion 22 for detecting the rolling limit may be attached to the rotating body A with a screw or the like.

[Brief description of the drawings]

Fig. 1 Side view of rice transplanter

FIG. 2 is a front view of the seedling planting apparatus.

FIG. 3 is a side view of the seedling planting apparatus.

FIG. 4 is a front view of the seedling planting apparatus in a state where a sub-seedling placing part is switched to a storage posture;

FIG. 5 is a side view of the seedling planting apparatus in a state where a sub-seedling placing part is switched to a storage posture;

FIG. 6 is a plan view of a rolling operation unit.

FIG. 7 is a front view of the rolling operation means.

FIG. 8 is a longitudinal sectional side view of the rolling operation means.

FIG. 9 is a front view of a rotating body.

FIG. 10 is a front view of a rotating body showing a second embodiment.

[Explanation of symbols]

 Reference Signs List 3 ground work device 1 traveling machine body P longitudinal axis 11 rolling operation means 13 motor A rotating body 17L left wire 17R right wire 22 protrusion 23L limit switch 23R limit switch 13B drive gear 14 input gear section L left mesh release section R right mesh Release section

Continued on the front page F term (reference) 2B062 AA10 AA14 AB01 AB07 BA69 CA05 CA08 CB01 2B304 KA02 KA03 LA02 LA09 LB05 LB16 MA08 MB02 PC08 PC12 QA11 QA26 QC04 RA03

Claims (3)

[Claims] 1. A working machine having a ground operating device rotatably connected to a traveling machine body around a longitudinal axis and a rolling operation means for performing a rolling operation on the ground working device. A motor capable of switching between reverse rotation and a rotating body driven by this motor are provided, and the rotating body is taken up by the rotating body in accordance with the forward rotation of the rotating body, thereby pulling up the left side of the ground working device and moving the ground working device to the traveling machine body. A left wire to be rolled and a right wire to be pulled up on the right side of the ground working device by being wound up by the rotating body with the reversal of the rotating body and to roll the ground working device to the traveling body. Is provided with a protrusion for detecting the rolling limit, and when the protrusion is rotated to the left rolling limit, the limit for detecting the left rolling limit is pressed by the protrusion. Switch, and a limit switch for detecting a right rolling limit pressed by the protrusion when the protrusion rotates to the right rolling limit, and constitutes the rolling operation means. Rolling operation device for a work machine equipped with a wide one. 2. A working machine having a ground working device rotatably connected to a traveling machine body around a longitudinal axis and a rolling operation means for performing a rolling operation on the ground working device. A motor capable of switching between reverse rotation and a rotating body driven by this motor are provided, and the rotating body is taken up by the rotating body in accordance with the forward rotation of the rotating body, thereby pulling up the left side of the ground working device and moving the ground working device to the traveling machine body. A left wire to be rolled and a right wire to be pulled up on the right side of the ground working device by being wound up by the rotating body with the reversal of the rotating body and to roll the ground working device to the traveling body. When the rotating body rotates to the left rolling limit, the input gear portion meshing with the drive gear driven by the motor drives the normal mesh with the drive gear. A left mesh release part that releases the meshing and stops the rotation of the rotating body, and a right meshing release that releases the regular meshing with the drive gear and stops the rotation of the rotating body when the rotating body rotates to the right rolling limit A rolling operation device for a working machine, wherein the rolling operation means comprises a rolling section. 3. The rolling operation device for a working machine according to claim 2, wherein the motor is stopped when the rotation stop state of the input gear section is continued for a set time or more.