JPH11196629A - Transmitting mechanism for operating power in working machine in paddy field - Google Patents

Abstract

PROBLEM TO BE SOLVED: To arrange a planting clutch and a fertilizer application clutch so that interlocking can be carried out and independently engage and disengage the fertilizer application clutch from the planting clutch. SOLUTION: This transmitting mechanism for an operating power in a working machine in a paddy field capable of operating a hydraulic and planting lever 17 of a sulky rice transplanter, thereby transmitting the power through a planting clutch 91 to a planting part, performing operations to plant mat seedlings to a field, engaging the fertilizer application clutch 99 installed separately from the planting clutch 91 and thereby applying a fertilizer to the field. The planting clutch 91 is connected through an interlocking connecting means 31 to the fertilizer application clutch 99. When operations to engage or disengage the planting clutch 91 are performed, the fertilizer application clutch 99 can be engaged and disengaged interlocking therewith. The engagement and disengagement control of the planting clutch 99 alone can be carried out independently of the planting clutch 91.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paddy field working vehicle such as a riding rice transplanter, and more particularly, to controlling a planting clutch by operating a planting clutch lever to enable a planting operation and a fertilizing clutch. The present invention relates to an operation force transmission mechanism in a paddy field work vehicle that can be controlled and fertilized in a field.

[0002]

2. Description of the Related Art Generally, a riding rice transplanter is provided with a hydraulic / planting lever which can be operated to a manual operation position and an automatic position. At the automatic position, the earth pressure acting on the float of the planting portion is sensed, and the planting portion is automatically raised and lowered by hydraulic pressure so as to be at the proper planting position.

[0003] The hydraulic / planting lever is connected to a hydraulic control valve, and when the hydraulic control valve is actuated, the hydraulic cylinder moves up and down the planting section and engages the planting clutch in the transmission via a planting clutch wire. Cutting can be performed with one lever.

That is, for example, as shown in FIG. 7, the on / off of the planting clutch in the transmission is performed by operating the hydraulic / planting lever 17, and the cam 76 and roller 77, The cam arm 84 operates the clutch arm 79, the clutch shaft 80, and the planting clutch via the clutch wire 78, so as to input / disconnect power to the planting portion.

On the other hand, a fertilizer application tank is mounted on a riding rice transplanter in order to apply fertilizer to a field, and a fertilizer application clutch is disposed in the transmission separately from the above-mentioned planting clutch, and the fertilizer application clutch is operated by a fertilizer application clutch lever. There is also known a type in which paste fertilizer or the like can be fertilized from the fertilization tank to a field by controlling on / off.

[0006]

However, conventionally, the fertilizing clutch was controlled to operate the fertilizing clutch to apply fertilizer to the field. When the fertilizer application clutch lever is operated or the fertilizer application clutch lever is to be operated, there is a problem that the hydraulic pressure / planting lever 17 is operated by mistake.

In this regard, means for interlocking the planting clutch and the fertilizer application clutch may be considered. However, simply interlocking these clutches alone allows the operation check, inspection, and maintenance of only the planting section or fertilizer section. This is inconvenient when performing

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to dispose a planting clutch and a fertilizing clutch in an interlockable manner and to separate the fertilizing clutch from the planting clutch. It is another object of the present invention to provide an operation force transmission mechanism in a paddy field working vehicle configured to be able to turn on and off.

[0009]

In order to achieve the above object, the present invention controls the planting clutch (91) by operating the planting clutch lever (17) to enable the planting operation. In a paddy field work vehicle (1) which can be fertilized in a field by controlling a fertilizing clutch (99) provided separately from the planting clutch (91), the planting clutch (99) and the fertilizing clutch (99) ) Are connected via interlocking connection means (31), so that the fertilization clutch (99) can be turned on and off in conjunction with the on / off operation of the planting clutch (99), and the fertilization clutch (99) can be connected. ) Is configured to be capable of on / off control independently of the planting clutch (99).

The present invention also relates to the interlocking connection means (3)
In 1), an elastic accommodation mechanism (34, 49) is interposed, and the fertilizing clutch (99) is connected to the elastic accommodation mechanism (34, 4).
It is characterized by being operable against 9). (Action) By the above-mentioned invention specifying matter, in the present invention,
The planting clutch lever (17) of the paddy field work vehicle (1) is connected to the planting section (10) via the planting clutch (91), and is controlled by controlling the planting clutch (91). Operation is possible, and the planting clutch (9
By controlling the fertilizer application clutch (99) provided separately from 1), it is possible to apply fertilizer to the field.

The planting clutch (91) is connected to a fertilizing clutch (99) via an interlocking connecting means (31). When the planting clutch (91) is turned on and off, the planting clutch (91) is operated in conjunction therewith. The fertilizing clutch (99) can be turned on and off. On the other hand, an elastic accommodating mechanism (34, 49) is interposed in the interlocking connecting means (31), and the fertilizing clutch (9) is opposed to the urging force of the elastic accommodating mechanism (34, 49).
By operating 9), only the fertilizing clutch (99) can be turned on and off independently of the planting clutch (91).

Note that the reference numerals in parentheses described above are shown for reference to the drawings, and do not limit the configuration of the present invention at all.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. Members that are the same as or correspond to those of the above-described conventional example are denoted by the same reference numerals.

As shown in FIG. 1 and FIG. 2, a riding rice transplanter 1
Has a traveling machine body 5 supported by front wheels 2 and rear wheels 3. The traveling body 5 has an engine 6 at a front portion of a front wheel thereof, a transmission 16 at a rear portion thereof, and a fertilizer application device 27 to which power is transmitted via the transmission 16. Is provided with a driver's seat 9.

A main transmission lever 23 is disposed near the steering wheel 13 in front of the driver's seat 9 and a hydraulic / planting lever 17 as a planting clutch lever is provided on the side of the driver's seat 9. ing.

At the rear of the traveling machine body 5, a planting section 10 is supported via a lifting link mechanism 8 so as to be able to move up and down freely, and the planting section 10 has a large number of planters 11,... Is provided with a seedling mounting table 12 on which can be placed vertically. The planting section 10 is provided with the hydraulic / planting lever 17.
Is operated, the on / off control of the below-described planting clutch 91 (see FIG. 4) connected via the hydraulic / planting lever 17 and the planting clutch operation system 25 is performed, and the power is turned on / off. Will be

The fertilizer applicator 27 includes a fertilizer tank 28 for storing paste fertilizer and the like, a fertilizer tube 29 for guiding the fertilizer in the fertilizer tank 28 to a nozzle (not shown) attached to the float 14, and a fertilizer tube 29. A fertilizer pump 30 for pumping the fertilizer into the fertilizer 29 is provided. By operating a fertilizer clutch lever (not shown), a fertilizer clutch 99 (FIG.
) Is controlled to turn on and off the power.

A hydraulic cylinder device 19 (see FIG. 3) is provided between the transmission 16 and the lifting link mechanism 8.
Is provided, and the planting portion 10 is provided based on the expansion and contraction of the hydraulic cylinder device 19 by the hydraulic control valve 35 (see FIG. 3).
Moves up and down. The front axle case 52 and the rear axle case 54 are connected to each other by body frames 4, 4 which are arranged on the left and right sides of the body and extend in the longitudinal direction of the body.

As shown in FIG. 3, the hydraulic control valve 35 is provided below the driver's seat 9 and an arm 37 is rotatably supported on a spool shaft 35a. The arm 37 is connected to the float 14 via a hydraulic pressure sensing operation system 15 to be described later. The hydraulic control valve 35 is controlled by the vertical movement of the float 14, and the hydraulic cylinder device 19 expands and contracts. The planting section 10 is supported by a rolling shaft (not shown) so as to be freely rollable in the left-right direction, and the float 14 is supported up and down freely, and a sensing plate 62 is pivotally connected to a front portion thereof. I have.

The hydraulic pressure sensing operation system 15 includes a sensing plate 62 and swing arms 75a, 75
b, and a continuous traction link 42 connected to the sensing rod 39 via the link ratio adjusting unit 20. The other side of the continuous traction link 42 is connected to the arm 37. It is connected to the hydraulic control valve 35 through the above.

The swing arms 75a and 75b can swing integrally about the pivot 60, and are connected to the connecting shaft 21 connecting the left and right lower links 8b and 8b at the rear of the body. It is swingable. The sensing plate 62 and the swing arm 75a are connected via a pin 72 fitted into a long hole of the sensing plate 62, and a sensing rod 39 is connected to a tip of the swing arm 75b. .

The link ratio adjusting unit 20 includes the sensing rod 3
The conversion lever 22 is connected to the link 9 and the continuous traction link 42. The tip of the conversion lever 22 and the sensing rod 39 are rotatably mounted on the shaft. The base end of the conversion lever 22 is rotatably mounted on the mounting shaft of the lower link 8b by the pivot connection portion 18.

The conversion lever 22 has a plurality of holes formed in the longitudinal direction thereof. A connecting point between the conversion lever 22 and the continuous traction link 42 is formed by inserting and removing a pin 46 inserted into the hole. Is changed, the amount of rotation of the sensing rod 39 (the amount of vertical movement of the float 14) about the pivot connection portion 18 and the amount of rotation of the continuous traction link 42 are changed according to the connection point.

The link 42 is provided with a pin 44 at an intermediate portion.
Is connected to a sensitivity adjustment lever 50 via a return spring 45 and a wire 24, which is further connected to an engine throttle lever 56.

Here, the present invention relates to the planting clutch 91.
And the fertilizing clutch 99 are connected via an interlocking connection means so that the fertilizing clutch 99 can be turned on and off in conjunction with the on / off operation of the planting clutch 91, and the fertilizing clutch 99 is connected to the planting The on / off control can be performed independently of the clutch 91.

FIG. 4 shows a state in which an intermediate path connecting the hydraulic pressure / planting lever 17 and the planting clutch 91 is connected.

In the figure, a flat cam 76 is rotatably supported by a support shaft 82, and the hydraulic / planting lever 17 is supported by a lug 76a via a pivot pin 83 so as to be swingable. Have been. The cam 76 is a clutch operating surface 76
b, and the clutch operation surface 76 b
The cam surface is in contact with a roller 77 rotatably supported at the tip.

The cam arm 84 is rotatably supported by a support shaft 85, and the other end of the cam arm 84 is
The clutch arm 79 is connected to a clutch arm 79 via a clutch rod 81 and a clutch rod 81, and the clutch arm 79 operates the planting clutch 91. The cushion mechanism 87 includes a metal member 69 having a U-shape in plan view,
The rod member 68 has a contact plate 68a fixed to one end, and a spring 86 mounted between the contact plate 68a and the metal member 69.

The operating force applied to the hydraulic / planting lever 17 is transmitted to the clutch arm 79 via the cam arm 84, the cushion mechanism 87, and the clutch rod 81, and the clutch arm 79 is connected to the clutch shaft 79. The forcing clutch 80 is forcibly rotated to control the on / off of the planting clutch 91. Further, a fertilizing clutch 99 is connected to the planting clutch 91 via the interlocking connecting means 31.

In the present invention, the interlocking connection means 31 has an elastic accommodation mechanism interposed therebetween, and the fertilizing clutch 99 can be operated against the elastic accommodation mechanism.

In the present embodiment, the interlocking connection means 31 includes an interlocking arm 33 having an intermediate portion pivotally mounted on a fulcrum shaft 32, one end of which is connected to the interlocking arm 33, and the other end of which is fertilized. A connecting rod 34 connected to an L fitting 47 fixed to the clutch arm 100;
A spring (compression) 49 is provided between the washer 48 provided at the middle of the L 4 and the L fitting 47.
The connecting rod 34 and the spring 49 form an elastic accommodation mechanism.

The interlocking arm 33 includes a clutch arm 79
And when the clutch arm 79 swings,
In conjunction with this, the clutch arm 100 swings and the fertilizer application clutch 99 is turned on and off. And the connecting rod 34
When L moves in the "in" direction, the L bracket 47 is moved in the same direction by the connecting rod 34, and when the connecting rod 34 moves in the "off" direction, the connecting rod 34 is free with respect to the L bracket 47. And the L fitting 47 is urged in the “off” direction by the urging pressure of the spring 49.

When the planting clutch 91 is turned on,
The “on” state is maintained by the urging pressure of the spring 108 in the transmission 16 (see FIG. 5), and the “on” state is maintained by the urging pressure of the spring 109 in the transmission 16 when the fertilizing clutch 99 is “on”. (See FIG. 5). Conversely, when the planting clutch 91 is "disengaged", the "disengaged" state is maintained against the spring 108, and when the fertilizing clutch 99 is "disengaged", the "disconnected" state is maintained against the spring 109. Is done.

On the other hand, the fertilizing clutch 99 has a fertilizing clutch lever 1 slidable along the lever guide 110.
11 is attached, this fertilizing clutch lever 1
By manipulating the nut 11 and inserting and locking it in the guide groove 110a, the on / off control of the fertilizing clutch 99 can be performed independently of the planting clutch 91.

That is, when the fertilizing clutch 99 is in the disengaged state in conjunction with the disengagement operation of the planting clutch 91 by operating the hydraulic / planting lever 17, the clutch arm 1
00 is urged in the “off” direction by the urging pressure of the spring 49, but if the fertilizing clutch lever 111 is operated in the “on” direction against this urging force, the fertilizing clutch 99
Can be switched to the "on" state. In addition, hydraulic
When the fertilizing clutch 99 is engaged by operating the planting lever 17 in conjunction with the engaging operation of the planting clutch 91, the clutch arm 100 moves the transmission 16.
The fertilizer clutch 99 is held in the “on” state by the urging force of the spring 109 inside the fertilizer.
Can be switched to the “off” state.

FIGS. 5 and 6 show the internal structure of the transmission case. In the running relationship, the power from the engine is transmitted to the shaft 101 of the transmission 16 by the belt 58 and the pulley 59, and the shaft 101 A disk clutch 88 is provided, and power is turned on and off by operating a clutch pedal.

A main transmission gear 89 and an auxiliary transmission gear 90 are provided on the shaft 102. The shift shaft 92 shown in FIG. 6 is slid to perform forward / reverse switching by a shifter 96. Switching between work and traveling is performed by the shifter 97 by sliding operation. The power of the engine is transmitted from the shaft 102 to the gear of the shaft 103, transmitted to the traveling PTO shaft 94 via the bevel gear of the shaft 107 via the differential ring gear, and the rear axle is driven.

Further, an extension shaft 112 is coaxially mounted on the shaft 102, and the extension shaft 112 is connected to a fertilization shaft 113 via a gear connection and a fertilization clutch 99. The fertilizing shaft 113 is connected to the fertilizing pump 30 by a chain or the like. The fertilizing clutch 99 is maintained in the "on" state by the urging force of the spring 109 during the fertilizing operation.

On the other hand, in the planting relation, the shaft 101
And the first planted shaft 101 'are gear-coupled, the first planted shaft 101' and the second planted shaft 102 'are gear-coupled, and the second planted shaft 102' is further gear-coupled and planted. The planted PTO shaft 95 is connected via the clutch 91. During the planting operation, the planting clutch 91 is maintained in the “on” state by the urging force of the spring 108.

Next, the operation of the present embodiment will be described.

When the hydraulic / planting lever 17 is operated to the automatic position, the hydraulic control valve 35 is controlled via the hydraulic pressure sensing operation system 15 based on the earth pressure acting on the float 14.
That is, when the planting section 10 is at the proper planting position, the hydraulic control valve 3 is controlled by the swing arms 75a and 75b, the sensing rod 39, the continuous traction link 42, and the like via the valve-side arm 37.
5 is held to hold the planting section 10 in that position.

From this state, when the planting section 10 rises with respect to the rice field surface and the earth pressure acting on the float 14 decreases, the front of the float 14 drops, and the movement is detected by the sensing plate 62.
The rotation is transmitted to the swing arm 75a via the pin 72 positioned at a predetermined position in the counterclockwise direction (FIG. 3), and the swing arm 75b also rotates in the same direction around the rotation fulcrum 60. The sensing rod 39 is pressed.

The pressing force at this time causes the conversion lever 22 to rotate counterclockwise around the pivot 18, and the amount of movement of the sensing rod 39 is reduced and transmitted to the continuous traction link 42. The movement amount of the continuous traction link 42 is transmitted to the arm 37, the hydraulic control valve 35 is switched, the cylinder device 19 is contracted, and the planting portion 10 is lowered.

On the contrary, the planting section 10 descends and the float 1
When the earth pressure acting on the hydraulic pressure control valve 4 increases, the front of the float 14 is lifted, and the hydraulic control valve 3
5 is controlled, the hydraulic cylinder device 19 is extended, and the planting section 10 is raised.

Since the hydraulic / planting lever 17 is also connected to the planting clutch 91 via the planting clutch operating system 25, when the hydraulic / planting lever 17 is operated to the "planting" position. The seedling clutch 91 is inserted, and seedlings are planted in the field by the planting unit 10. Furthermore, since the fertilizing clutch 99 is connected to the planting clutch 91 via the interlocking connection means 31, the planting clutch 9
The on / off operation of 1 controls the on / off operation of the fertilizing clutch 99 in conjunction with the on / off operation. On the other hand, since the elastic coupling mechanisms 34 and 49 are interposed in the interlocking connecting means 31, only the fertilizing clutch 99 can be controlled to be turned on and off independently of the planting clutch 91.

[0046]

As described above, according to the first aspect of the present invention, since the planting clutch and the fertilizing clutch are connected via the interlocking connection means, the fertilizer is applied when the planting clutch is turned on and off. Since the clutch can be linked,
The operation becomes simple, and the on / off operation of the fertilizer application clutch linked to the on / off operation of the planting clutch can be performed without erroneous operation.

Also, since the fertilizing clutch can be turned on and off independently, for example, only the fertilizing clutch can be turned on independently even when the planting clutch is off, and preparation for fertilizing work can be easily performed. it can. Furthermore, since it is possible to confirm only the fertilization operation separately from the planting operation, it contributes to improvement of safety.

According to the second aspect of the present invention, since the elastic interlocking mechanism is interposed in the interlocking connection means, the fertilizer application clutch is operated against the elastic interlocking mechanism so that the connection of the planting clutch can be prevented. Regardless of the setting, only the fertilizing clutch can be turned on and off independently with a simple structure.

[Brief description of the drawings]

FIG. 1 is a side view of a riding rice transplanter to which the present invention is applied.

FIG. 2 is a plan view of the riding rice transplanter.

FIG. 3 is a diagram showing an overall configuration of a hydraulic pressure sensing operation system.

FIG. 4 is a diagram showing an overall configuration of a planting clutch operation system and a fertilization clutch operation system.

FIG. 5 is a diagram showing an internal structure of a transmission.

FIG. 6 is a diagram showing a main transmission and a sub transmission mechanism.

FIG. 7 is a diagram showing a conventional example of a planting clutch operation system for connecting a hydraulic / planting lever and a planting clutch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Riding rice transplanter 5 Traveling body 8 Elevating link mechanism 10 Planting part 14 Float 15 Hydraulic sensing operation system 17 Hydraulic / planting lever 19 Hydraulic cylinder device 25 Planting clutch operation system 27 Fertilizer application device 31 Interlocking connection means 33 Interlocking arm 34 Connection Rod 35 Hydraulic control valve 49 Spring (compression) 79 Clutch arm 80 Clutch shaft 81 Clutch rod 84 Cam arm 87 Cushion mechanism 91 Planting clutch 99 Fertilizing clutch 100 Fertilizing clutch arm

Claims (2)

[Claims] 1. A planting clutch is controlled by operating a planting clutch lever to enable a planting operation, and a fertilizing clutch separately disposed from the planting clutch is controlled to apply fertilizer to a field. In the paddy field work vehicle, the planting clutch and the fertilizer application clutch are connected via interlocking connection means, and the fertilizer application clutch can be turned on and off in conjunction with the on / off operation of the planting clutch, An operation force transmission mechanism for a paddy field working vehicle, wherein the fertilizer application clutch is configured to be capable of on / off control independently of the planting clutch. 2. The paddy working vehicle according to claim 1, wherein an elastic accommodation mechanism is interposed in the interlocking connection means, and the fertilizer application clutch is operable against the elastic accommodation mechanism. Operating force transmission mechanism.