JPH09294426A - Passenger work machine - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To construct a rice transplanter capable of recognizing whether or not a control for forcibly raising and lowering a seedling planting device is reliably performed. SOLUTION: A seedling planting device is connected to a traveling machine body by a lift cylinder 8 so as to be able to move up and down, and when a switch 41 detects that the forced elevating lever is operated from a neutral position to a raised position U, seedling planting is performed. When the switch 42 detects that the device has started to move up and has been operated from the neutral position to the lowered position, it is equipped with a forcible lifting means for starting the descent of the seedling planting device, and the switches 41, 42 are used to switch the forced lifting lever. An alarm 56 is provided to generate a notification sound when an operation is detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects a working device to a traveling machine body so that the working device can be moved up and down by driving an actuator.
When the switch detects that the operating tool configured to restore to the neutral position has been operated from the neutral position to the raised position, the work device starts to rise and the switch detects that the operating device has been operated from the neutral position to the lowered position. The present invention relates to improvement of a riding work machine including a forced lifting means for starting the descent of the working device.

[0002]

2. Description of the Related Art Conventionally, a rice transplanter is cited as an example of a technique similar to the riding machine constructed as described above.
-37839 gazette, and in this conventional example, when the seedling planting device is in the grounded state and the switching lever is operated to the up / down position, the seedling planting device is raised to the upper limit, and this operation is performed. When the seedling planting device is at the upper limit, the control operation is set to lower the seedling planting device to the ground level when the switching lever is operated again to the up / down position.

[0003]

However, even when the raising / lowering of the seedling planting apparatus is performed by operating the switching lever as in the conventional example, when the raising / lowering of the seedling planting apparatus is required, the switching lever is operated. If the operation is not sufficient, the seedling planting device may not be raised or lowered.Therefore, the operator swivels the machine as if he or she raised the seedling planting device and brings the seedling planting device into contact with the ridges. Even if the seedling planting equipment is damaged and the seedling planting work is started with the intention of lowering the seedling planting equipment, the seedling planting equipment is not lowered and work efficiency may be reduced. It was

In order to eliminate this inconvenience, it is necessary to visually confirm the elevation of the seedling planting device every time the seedling planting device is raised and lowered by the switching lever. However, in the case where the rear part of the machine body is equipped with the seedling planting device, the operator has to perform a motion of looking back toward the rear side for confirmation, and there is room for improvement in terms of troublesomeness.

An object of the present invention is to reasonably configure a riding work machine which allows a worker to easily grasp that the work equipment provided on the traveling machine body is to be lifted and lowered.

[0006]

A first feature of the present invention (Claim 1) is, as described at the beginning, that a working device is connected to a traveling body by an actuator so that the working device can be moved up and down to a neutral position. When the switch detects that the operating tool configured to restore has been operated from the neutral position to the raised position, the work device starts to rise, and when the switch detects that the operating device has been operated from the neutral position to the lowered position. Is a riding work machine equipped with a forced elevating means for starting the lowering of the working device, when the operation of the operating device is lifted by detecting the operation of the operating device by the switch, when the operation of the operating device is detected by the switch. In that there is a notification sound generating means for generating a notification sound,
The operation is as follows.

A second feature of the present invention (claim 2) is to provide an elevating control means for automatically elevating and lowering the working device in accordance with a change in height of the ground surface. The work device is allowed to be lifted by the forced lifting means in a state where the work device is automatically moved up and down following the height change, and after this lifting, the working device is lowered by the forced lift means to return to the automatic lifting control. Is allowed to be set to a control state that allows the alarm sound to be generated by the notification sound generating means only when the lifting control means is in a control status that allows the lifting and lowering state of the work device by the forced lifting means. The control operation is set, and its operation is as follows.

[Operation] According to the first feature, when the operation of the operating tool is detected by the switch, the forced elevating means starts to elevate the work device and the operation of the operating tool is detected by the switch. In this case, the notification sound generating means generates the notification sound. In other words, if the notification sound is generated when the operating tool is operated for the purpose of raising or lowering the working device, it can be determined that the operating tool is being operated properly and the working device is also started to move up and down. If it does not occur, it can be determined that the operation device is not operated properly (the operation device has not been operated to the required position) and the work device cannot be raised or lowered. In this case, prompt operation of the operation device again. It is possible to eliminate the decrease in work efficiency.

According to the second feature, only when the elevating control means permits the elevating and lowering of the working device by the forcible elevating means, the alarm sound generating means generates the alarm sound in association with the operation of the operating tool. Therefore, for example, when the working device is raised to the upper limit without using the forcible lifting means and traveling on the road, the working device does not descend even if the operating tool is operated to the lowered position by mistake, and an alarm is emitted. It will not be generated. Similarly, when the work device is working with the traveling body maintained at a predetermined height, the work device does not move up and down even if the operating tool is operated by mistake, and the alarm sound is generated. Will not occur.

[0010]

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 machine body 3 provided with, and the belt type continuously variable transmission V for transmitting the power from the engine 4 and the transmission case 5 are arranged on the front part of the traveling machine body 3, Further, the steering handle 6 and the driver's seat 7 are arranged in the center of the traveling machine body 3, and the seedling planting apparatus A is mounted on the rear end portion of the traveling machine body 3 via a link mechanism 9 which is driven up and down by a lift cylinder 8 as an actuator. To form a rice transplanter as a riding work machine.

The plant A for planting seedlings comprises a planting mechanism 1 having a planting arm from the lower end of the mat line seedling W placed on the seedling platform 10.
1 is cut out one by one and is operated so as to be planted in a field scene.
The line marker 13 is provided at the left and right positions and is switchable between a working posture in which the tip portion thereof projects into the field scene and a non-working posture in which the tip end thereof is separated upward from the field scene.

On the right side of the driver's seat 7, the raising and lowering of the seedling planting device A and the planting clutch C built in the mission case 5 are carried out.
The raising / lowering lever 16 for performing control of the raising / lowering lever 16 is set to the “lowering” position in the path formed in the guide 17 to lower the seedling planting device A, as shown in FIG. When set to the “elevated” position, the seedling planting device A is raised, and when set to the “neutral” position, the seedling planting device A is linked to the control system so as to maintain the level, and the lifting lever 16 is also set. When set to the “ON” position, the planting clutch C is engaged and operated, and the ground leveling float 1 provided for the seedling planting apparatus A
When it is set to the "OFF" position, the planting clutch C is disengaged, and the elevating lever 16 is operated in cooperation with the control system so as to perform the automatic elevating control for maintaining the predetermined height against the field in the state where 2 is grounded. When set to the "automatic" position, the seedling planting apparatus A is allowed to move up and down in accordance with the operation of the forced raising and lowering lever described later, and at the same time, when the seedling planting apparatus A is raised, the planting clutch C can be automatically disengaged. Incidentally, a potentiometer type lever sensor 18 for measuring the operating position of the elevating lever 16 is provided at the base end portion of the elevating lever 16 as shown in FIG.

Of the plurality of ground leveling floats 12, the one located at the center in the left-right direction is swingably supported around the lateral axis P with respect to the seedling planting device A, and the front part is displaced in the vertical direction. A float sensor 19 that measures the amount of rocking of the leveling float 12 from the amount is provided. During automatic raising and lowering control of the seedling planting apparatus A, a signal from the float sensor 19 and a signal from the control sensitivity setting device 20 (see FIG. 7) are provided. The control operation is set so that the seedling planting apparatus A is moved up and down in a balanced manner.
Further, as shown in FIG. 1, the link mechanism 21 is provided at the base end of the link mechanism 9 to determine that the seedling planting apparatus A has been raised to the upper limit. The planted clutch C is configured to be turned on and off by the operation of the clutch motor 22.
As shown in FIG. 5, a planted clutch sensor 23 for determining the state of the clutch is provided in the vicinity.

As shown in FIG. 4, on the right side surface of the post portion 26 of the steering handle 6, a forced lift lever 27 is provided as an operation tool for forcibly moving the seedling planting apparatus A up and down. Based on the neutral position N and a rising position U that is urged to a neutral position N that is in a horizontal posture, and the end portion of the seedling planting device A is raised to an upper limit with the neutral position N as a reference. With the end portion facing downward, the descending position D where the seedling planting apparatus A is lowered to a working height for automatically raising and lowering, and the right side line marker 13 with the end portion facing rearward with reference to the neutral position N. The right marker position R for switching to the working posture and the left marker position L for switching the left line marker 13 to the working posture with the end portion thereof facing forward based on the neutral position N are configured to be freely switchable.

As shown in FIGS. 2 and 3, the forced lift lever 27 is set with respect to the upper end position of a shaft body 29 which is swingably supported around an axis Y parallel to the handle shaft case 28 of the steering handle 6. Support shaft 3 with its base end facing forward and backward
By swingably supporting about 0, swinging around the support shaft 30 allows swinging of the forcible lifting lever 27 in the up-down direction, and forcible rotation around the axis Y of the shaft 29. Lift lever 2
The rocking of 7 in the front-back direction is allowed.

A pair of upper and lower return members which are swingable around the shaft member 31 and are biased by springs 32 in directions close to each other with respect to the shaft member 31 supported in the handle shaft case 28 in a front-back direction. 33, 33, and a stopper (not shown) for setting a neutral position at a position sandwiched by the pair of return members 33, 33.
The abutment member 34, which is vertically movable with respect to the sandwiched position of 33, and the base end portion of the forced elevating lever 27 are linked with each other via the link member 35 in the vertical posture, so that the forced elevating lever 27 is moved. It is biased to return to the neutral position in the vertical direction. In addition, by biasing with the temple winding spring 36 so as to maintain the swinging posture of the shaft 29 around the axis Y in a predetermined posture, the forced lifting lever 27 is returned to the intermediate position in the front-rear direction. Has become.

A swing member 38 is provided so as to be swingable around a shaft member 37 which is in a sideways position with respect to the handle shaft case 28, and an engaging recess 38A formed on the swing member 38 is formed.
The operation shaft 39 protruding laterally from the intermediate portion of the shaft body 29 is engaged with the shaft member 29, and the left and right line markers 13 and 13 are attached to the rocking ends of the rocking member 38 at the front and rear positions. The switching wires 40, 40 for switching to the working posture are connected through a long hole.

Further, the compulsory elevating lever 27 is moved to the raised position U and the lowered position D based on the swinging displacements of the upper and lower return members 33, 33, respectively.
Is provided with a raising switch 41 and a lowering switch 42 for detecting that the forced raising / lowering lever 27 has been operated to the right marker position R or the left marker position L from the swinging posture of the swinging member 38. A pair of marker switches 43, 43 are provided.

As shown in FIG. 6, the line markers 13 are provided at both end positions of the frame 46 of the seedling planting apparatus A so as to be swingable around a support shaft 47 in a front-back direction, and the line markers 13 are provided at the base end parts. A spring 48 for urging 13 to the working posture,
Further, the operation force from the rear end of the link mechanism 9 is set so that the left and right line markers 13 and 13 are simultaneously brought into the non-acting posture by the pulling operation accompanying the posture change of the link mechanism 9 when the seedling planting apparatus A is raised. A pair of operation wires 49, 49 that are transmitted are further provided, and even when the seedling planting apparatus A descends from the ascending position, the operation wires 49, 49 are maintained in the pulled state and the line markers 13, 13 are in the non-acting posture. Lock mechanism 5 to keep
0, 50 (structure is not described in detail). The lock mechanism 50 is configured to release the locked state by pulling the switching wire 40 and loosen the operation wire 49 to allow the line marker 13 to switch to the working posture.

As shown in FIG. 7, a control system is constructed. In this control system, the lever sensor 18, the raising switch 41, the lowering switch 42, and the marker switch are provided for the control device 53 having a microprocessor (not shown). 43, link sensor 21, control sensitivity setting device 20, float sensor 1
9 and a system for inputting signals from the clutch sensors 23 for determining the state of the planted clutch C, a solenoid valve 54 for the lift cylinder 7, a relay circuit 55 for controlling the clutch motor 22, and an alarm 56. An output system for each is formed. The alarm 56 is an example of the notification sound generating means in claim 1, and has a mechanism for generating a sound such as a speaker.

In this control device 53, the raising / lowering lever 16 is set to the "automatic" position, the leveling float 12 is grounded, and the raising / lowering lever 27 is raised while the seedling planting device A is being automatically raised / lowered. When the raising switch 41 detects that it has been operated to the position, the alarm 56 is activated to let the operator know that the forced raising control is performed, and the forced raising control causes the seedling planting device A to reach the upper limit position. Even if the forced lift lever 27 is operated to the lowered position D in a certain state,
The alarm 56 is activated to let the operator recognize that the descending control of the seedling planting apparatus A is performed, and the control operation will be described below.

As shown in the flow chart of FIG. 8, when the lift lever 16 is set to the "neutral" position, the solenoid valve 5
4 is operated to the neutral position, and when it is determined that the planting clutch C is in the engaged state based on the signal from the clutch sensor 23, the planting clutch C is disengaged (steps # 101 and # 102). ). Also, the lifting lever 16
When is set to the "automatic" position, the automatic control routine is set (steps # 103 and # 200). When the lift lever 16 is set to the "up" position, the solenoid valve 5
4 is moved to the raised position, and if the planting clutch C is in the engaged state similarly to the above, the disengagement operation is performed (# 104, #
105 steps). Further, when the elevating lever 16 is set to the “down” position, the solenoid valve 54 is operated to the down position and the seedling planting apparatus A is moved down until the float sensor 19 detects the grounding state of the leveling float 12, and the automatic setting is performed. If the planting clutch C is in the engaged state, the shifting operation is performed in the raising / lowering control mode (steps # 106 and # 107). Further, when the elevating lever 16 is operated to the “ON” position, the solenoid valve 54 is operated to the descending position and the seedling planting apparatus A is descended until the float sensor 19 detects the grounding state of the leveling float 12, If the planting clutch C is in the disengaged state, the operation is switched to the up / down control in the automatic up / down control mode (steps # 108 to # 109).

As shown in the flow chart of FIG. 9, in the automatic control routine, it is determined whether the seedling planting apparatus A is at the working height based on the signal from the float sensor 19, and if it is at the working height, the automatic control is automatically performed. Seedling planting device A in lifting control mode
Is performed (steps # 201 and # 202). next,
When it is detected that the lowering switch 42 has reached the ON state by the operation of the forcible lifting lever 27 to the lowering position D,
Only when it is determined that the planted clutch C is in the disengaged state based on the signal from the clutch sensor 23, the alarm 56 is activated for 0.2 seconds to operate the planted clutch C (steps # 203 to # 206). ).

When it is detected that the raising switch 41 has reached the ON state by operating the forcible lifting lever 27 to the raising position U, the alarm 56 is activated for 0.2 seconds,
The solenoid valve 54 is operated to the raised position to start the raising of the seedling planting device A, and if the planting clutch C is in the engaged state, it is turned off until the seedling planting device A reaches the upper limit with the link sensor 21. The ascent continues (steps # 207 to # 212).

When the seedling planting apparatus A is not at the working height in step # 201, that is, when the seedling planting apparatus A is at the upper limit position, the forced elevating lever 27 is operated to move it down to the lowering position D. When it is detected that the switch 42 has reached the ON state, the alarm 56 is operated for 0.2 seconds, the electromagnetic valve 54 is operated to the lowered position to start the descending of the seedling planting apparatus A, and the float sensor It continues descending until it detects that the seedling planting device A has descended to the working height based on the signal from 19 (steps # 213 to # 217), and then switches the seedling planting device A in the automatic lifting control mode. The control moves up and down (step # 202). In addition, the compulsory control means of claim 1 is constituted by the control step of elevating and lowering the seedling planting device A in conjunction with the operation of the compulsory elevating lever 27, and a signal from the float sensor 19 and a signal from the control sensitivity setting device 20 are provided. The raising / lowering control means of claim 2 is constituted by a system for performing an operation during automatic raising / lowering control for raising / lowering the seedling planting apparatus A in a balanced manner.

When the forcible lifting lever 27 is operated to the right marker position R or the left marker position L, the line marker 13 on the side operated by the operation of the switching wire 40 is set to the working posture as described above. In addition to switching, when the planting clutch C is in the disengaged state, the planting clutch C is turned on and operated based on a signal from the marker switch 43.

As described above, according to the present invention, when the forced elevating lever 27 is operated for the purpose of elevating the seedling planting apparatus A,
If the alarm 56 alarm sound is generated, the forced lift lever 27
Is properly operated and the raising / lowering of the seedling planting apparatus A is started, and conversely, when the alarm sound of the alarm 56 does not occur even if the forced raising / lowering lever 27 is operated, the forced raising / lowering lever 27 is operated. It can be judged that the operation of is not appropriate (it has not been operated to the required position) and the raising and lowering of the seedling planting device A is not performed. In this case, the re-operation of the forcible raising and lowering lever 27 is prompted and the work efficiency is improved. It is also possible to eliminate the decrease in.

Furthermore, when the seedling planting apparatus A is raised to the upper limit and traveling on the road by operating the lift lever 16 without using the forced lift means, the forced lift lever 27 is erroneously operated to the lowered position D. Even though the seedling planting device A does not descend,
The alarm sound of the alarm 56 is not generated. Similarly, when the seedling planting device A is being operated with the traveling body 3 maintained at a predetermined height, even if the forcible lifting lever 27 is operated by mistake, It does not move up and down, and the alarm sound of the alarm 56 is not generated.

[Other Embodiments] In addition to the above-described embodiment, the present invention can make the timbre of the notification sound different when the seedling planting device is moved up and down, for example. It is also possible to apply to the working machine.

[0030]

Therefore, the passenger working machine is rationally constructed so as to be able to grasp that the lifting control of the working device provided on the traveling machine body is performed without making the worker feel bothersome (claim 1). ). In addition, it is possible to recognize that the working device does not move up and down when it is necessary to forcibly raise and lower the work device to prevent the work device from moving up and down due to an erroneous operation, and even when the operating tool is erroneously operated, the alarm does not sound. (Claim 2).

[Brief description of drawings]

[Figure 1] Overall side view of rice transplanter

FIG. 2 is a rear view showing the cooperation between the forcible lifting lever and the switch.

FIG. 3 is a side view showing the cooperation between the forcible lifting lever and the switch.

FIG. 4 is a side view showing an arrangement of a forced lifting lever.

FIG. 5 is a plan view of an operation path of a lifting lever.

FIG. 6 is a principle diagram of an operation structure of a line marker.

FIG. 7 is a block circuit diagram of a control system.

FIG. 8 is a flowchart of a lift control routine.

FIG. 9 is a flowchart of an automatic control routine.

[Explanation of symbols]

 3 traveling machine body 8 actuator 27 operation tool 41, 42 switch 56 alarm sound generating means A working device D lowered position N neutral position U raised position

Claims (2)

[Claims] 1. When a switch detects that a manipulating device is connected to a traveling machine body so as to be movable up and down by driving an actuator, and an operating tool configured to restore the neutral position is operated from a neutral position to a rising position. Is a riding work machine equipped with a compulsory lifting means for starting the ascent of the working device and starting the descent of the working device when the switch detects that the working device has been operated from the neutral position to the descending position. A riding work machine comprising an alarm sound generating means for generating an alarm sound when the operation of the operating tool is detected by a switch when the operation of the operating tool is detected to raise and lower the work device. 2. A lifting control means for automatically raising and lowering the working device in accordance with a height change of the ground surface is provided, and the raising and lowering control means automatically raises and lowers the working device in accordance with a height change of the ground surface. In such a state that the working device is allowed to rise by the forced lifting means, and after this lifting, the working device is lowered by the forced lifting means so that the working device can be returned to the automatic lifting control. 3. The control operation is set so as to allow the notification sound to be generated by the notification sound generating means only when the lifting control means is in a control state that allows the lifting / lowering state of the work device by the forced lifting means.
The listed work equipment.