JPH10329571A - Operating device of walking type working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the adjustment and assembly of engagement and disengagement of clutches for a manual operating lever and a hand operating lever and reduce the size of a device by facilitating its structure. SOLUTION: The operating device of a walking type working vehicle is structured so that a main operating wire 43 to which a manual operating lever is connected, a sub operating wire 21 to which an L-shaped metal fitting 44 and hand operating lever are connected, and L-shaped metal fittings 22 are connected slidably to a clutch arm 26 through a clutch spring 23 independently from and in parallel with each other so as to engage and disengage the same clutch 24 by the manual operating lever and hand operating lever.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walk-behind work vehicle such as a rice transplanter, and more particularly, to an operation device for a walk-behind work vehicle that operates to engage and disengage a clutch.

[0002]

2. Description of the Related Art A conventional operating device for a walk-behind work vehicle includes a work clutch lever 2 and a traveling clutch lever 5 provided on a handle portion extending rearward of the body as shown in FIG.
And a hand-operated lever 1 that can be operated by a finger or the like on the grip portion 36a of the handle.
8 are provided.

[0003] Of these, the manual operation levers 2 and 5 are:
It is connected to a work clutch and a traveling clutch (not shown) via a wire 60 and a relay link 20, respectively. The hand operation lever 18 is connected to the relay link 20 member via a wire 25, a rotating arm 19 and an intermediate link shaft 17, and the operation by the manual operation lever and the hand operation lever 18 is performed on the relay link shaft 17. Some are configured to transmit the power to the working clutch and the traveling clutch via the transmission.

[0004]

However, the conventional operating device for a walk-behind work vehicle has a manual operating lever 2,
5 and the hand operation lever 18 are connected to the wires 60 and 2 respectively.
5 is connected to the work clutch and the traveling clutch via the relay link shaft 17 and the relay link 20 so as to perform both clutch on / off operations. Therefore, when adjusting the clutch on / off operation, the manual operation lever 2 is required. , 5 and the operation lever 18 are arranged at different positions, and the operation strokes of the respective levers are different, so that there is a problem that the adjustment operation is complicated and the assembly is troublesome.

In order to operate the clutch with the hand control lever 18, the hand control lever 18 must be
In order to connect to the working clutch via the rotating arm 19, the relay link shaft 17 and the relay link 20 to which the manual operation lever 5 is connected, and to perform the clutch operation by the manual operation levers 2, 5, Since the connection to the work clutch is made via the relay link 20 to which the wire 60 is connected, the relay link shaft 17 and the relay link 2 are connected.
0 is required, the configuration becomes complicated, and there is a problem that the size cannot be reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to easily adjust and assemble the on / off operation of a clutch of a manual operation lever and a hand operation lever and to assemble the structure. It is an object of the present invention to provide an operation device for a walk-behind work vehicle that is simplified and reduced in size.

[0007]

Therefore, in order to achieve the above object, an operating device for a walk-behind work vehicle according to the first aspect of the present invention includes a manual operating lever (2, 2) for operating the clutch (24) to engage and disengage. 5) and a hand-operated lever (18) provided at the grip (36a) of the handle (36) for operating the clutch (24) on and off, wherein the manual operation lever (2) is provided. , 5) and the hand operation lever (18).
1, 22, 43, 44) and clutch actuating means (23, 26) for switching the clutch (24) on and off, and the two connecting means (21, 22, 43, 44).
With the manual operation levers (2, 5) and the hand operation lever (18) and the clutch operating means (23, 2), respectively.
And 6) are directly connected.

According to the second aspect of the present invention, the connecting means (21, 22, 43, 44) and the clutch operating means (2
3, 26) is connected to one of the coupling means (21, 22) by the clutch operating means (23, 26).
26), the other connecting means (43, 4)
4) A play is formed at the connection between the clutch operating means (23, 26).

According to the third aspect of the present invention, the manual operation lever (2, 5) and the hand operation lever (18)
The connecting means (21, 22, 43, 4) directly connected to
In 4), the diameter of the wire connected to the manual operation lever (2, 5) is formed larger than the diameter of the wire connected to the hand operation lever (18).

According to the first aspect of the present invention, one of the connecting means (43, 44) to which the manual operation lever (2, 5) is connected and the hand operation lever (18). Connecting means (21, 22) to which is connected
Are connected to clutch actuating means (23, 26) slidably and juxtaposed independently of each other, and the same clutch (24) is turned on and off by the manual operation levers (2, 5) and the hand operation lever (18). I tried to make it.

According to the second aspect of the present invention, when the clutch operating means (23, 26) is operated by one of the connecting means (21, 22, 43, 44), the other connecting means is used. (43, 44, 21, 22) and a play is formed at a connection portion between the clutch operating means (23, 26).

Note that the reference numerals in parentheses described above are for comparing the drawings, and do not limit the configuration of the present invention in any way.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a side view showing a walking type work vehicle, and FIG.
FIG. 3 is a plan view of the same, FIG. 3 is a side view showing the operating device according to the first embodiment of the present invention, FIG. 4 is a plan view of the same, and FIG. FIG. The same components are denoted by the same reference numerals.

In FIG. 1, a walking type rice transplanter 1 has a body 4
In front of the machine body 4, an engine 31, a transmission case 32, a frame 33, and the like are provided. Is provided. At the lower end of the seedling mounting table 37, a planting rod 38 is provided. Further, below the frame 33,
A float 11 as an earth pressure sensor that is swingable around a swinging fulcrum 11a at the rear is suspended. This float 1
Reference numeral 1 denotes a body height detection mechanism that detects the body pressure by sensing the earth pressure on the rice field surface.

Output shafts 39 project from the left and right ends of the transmission case 32, and chain cases 6 and 6 are supported at both ends of the output shaft 39 so as to be swingable about the output shafts. Paddy wheels 7, 7 are supported at the tips of the chain cases 6, 6.

A bumper portion 4 fixed to an engine 31 and a transmission case 32 is provided in front of the body 4.
2 is provided with a hydraulic cylinder (not shown) for adjusting the height of the fuselage. By rotating the chain cases 6 and 6 around the output shaft 39 by this hydraulic cylinder, the paddy wheel 7, 7 is moved up and down so that the planting depth of the seedlings is substantially constant.

Further, on the control panel 50 provided near the shaft portion of the handle 36, as shown in FIG. 5, the planting clutch lever 2 or the traveling clutch lever 5 as a manual operation lever is arranged. As shown in FIGS. 3 and 4, the manual operation levers 2 and 5 are connected to various clutches such as a work clutch (planting clutch) 24 or a traveling clutch via a connecting means described later and a clutch operating means described later. ing. Further, left and right side clutch levers 52 are disposed on the left and right grip portions 36a of the handle 36, respectively. In the figure, reference numeral 53 denotes a main shift lever.

The handle 36a of the handle 36 is provided with a hand-operated lever 18 which can be pushed in with the thumb or slid in the lateral direction to be turned on and off. The hand-operated lever 18 includes an operation lever 18a capable of operating the planting clutch 24 in the off position by being pushed in the direction of arrow C in FIG. 5, and an operation lever 18a locked in the off position by a lock mechanism (not shown). And a release lever portion 18b that can be slid in the lateral direction in order to release the inward position.

That is, the hand operation lever 18 is provided with a handle 36a of the handle 36 by a bracket (not shown).
Is connected to the operation lever portion 18a, and an operation wire 25 constituting a connecting means is connected to the operation lever portion 18a.

The above-mentioned connecting means has a configuration in which a main-side operation wire 43 composed of two wires or rods connected to the manual operation lever 2 and the hand-side operation lever 18 and a sub-side operation wire 21 are arranged side by side.

That is, as shown in FIGS. 3 and 4, one connecting means includes a main operation wire 43 such as a planting clutch wire connected to the planting clutch lever 2, for example, and an inner side of the main operation wire 43. An L-shaped fitting 44 is slidably fitted at the tip of the wire 43a. The other connecting means is a sub-side operation wire 21 such as a finger clutch wire connected to the hand operation lever 18, and an L-shaped fitting into which the tip of the inner wire 21 a of the sub-side operation wire 21 is slidably inserted. 22.

As a result, the connection between the inner wire 43a and the L-shaped bracket 44 and the inner wire 21a and the L
When the inner wire 43a or the inner wire 21a is actuated by one of the operation levers 2 or 18 at the connection portion with the V-shaped bracket 22, the connection is connected to the other operation lever 18 or the operation lever 2. Of the inner wire 21a or the inner wire 4
A play is formed between the tip of 3a and the L-shaped fitting 22 or the L-shaped fitting 44. In a state where the manual operation levers 2 and 5 and the hand operation lever 18 are not operated, an adjustment is made such that there is no play between the tips of the inner wires 21a and 43a and the L-shaped fittings 22 and 44.

Further, the diameter of the inner wire 43a of the main operation wire 43 is made large and the diameter of the inner wire 21a of the sub operation wire 21 is made small.

The two L-shaped fittings 22, 44 are arranged back to back as shown in FIG. 4 and connected to a clutch spring 23 constituting a clutch operating means. The clutch spring 23 is connected to a clutch arm 26. The clutch arm 26 rotates about a rotation shaft 26a, and has a lever portion 26b connected to the clutch spring 23 at an upper end thereof, and an arm portion 26c provided at a lower end thereof to perform an on / off operation of the planting clutch 24. The clutch operating means is constituted by the clutch spring 23 and the clutch arm 26.

The manual operation levers 2 and 5 rotatably supported by the control panel 50 are connected, for example, to the planting clutch lever 2 via a main operation wire 43 such as a planting clutch wire and an L-shaped fitting 44. The clutch spring 23 is connected to the planting clutch 24 via a clutch arm 26. Similarly, the hand operation lever 18 attached to the grip portion 36a is connected to the clutch spring 23 via the sub-side operation wire 21 and the L-shaped bracket 22, and the clutch spring 23 is planted via the clutch arm 26. It is connected to the clutch 24.

As shown in FIG. 4, the main operation wire 43 in this case allows the outer tube 43b to be inserted into a bracket 46 attached to the holding plate 45, and the inner wire 43a is slidably inserted into the outer tube 43b. This is the configuration. The holding plate 45 is attached to a drive case 47 located below the handle 36.

Further, as shown in FIG. 4, the sub-side operation wire 21 has the outer tube 21b inserted into the bracket 27 attached to the holding plate 45, and the inner wire 21a is slidably inserted through the outer tube 21b. In this configuration, the bracket 46 into which the main operation wire 43 is inserted and the bracket 27 into which the sub operation wire 21 is inserted are juxtaposed by a holding plate 45.

After the wires extending from the left and right side clutch levers 52 are guided downward through the handle 36 and the handle frame 40,
Guided forward along 3. Further, a lower operation panel 51 is provided below the seedling mounting table 37, and the lower operation panel 51 is provided with a planting depth adjustment lever 54.

The operating device of the present embodiment having the above-described structure is, for example, an operating lever portion 18 of a hand operating lever 18.
a in the direction of arrow C in FIG.
Is pulled, the clutch spring 23 is extended via the L-shaped bracket 22. In this case, the L-shaped fitting 44 connected to the main operation wire 43 slides along the inner wire 43a, and the inner wire 43a does not bend and deform.

Then, with the extension of the clutch spring 23, the clutch arm 26 rotates the lever 26b clockwise as shown in FIG. 4 around the rotation shaft 26a. For this reason, the arm portion 26c of the clutch arm 26 slides the planting clutch 24 to switch the clutch on and off.

Similarly, when the main operation wire 43 is pulled by operating the manual operation lever 2, the clutch spring 23 is extended via the L-shaped bracket 44. For this reason, the clutch arm 26 rotates and the lever 26b rotates clockwise as shown in FIG. 4 around the rotation shaft 26a with the extension of the clutch spring 23. Then, the planting clutch 24 is slid by the arm portion 26c of the clutch arm 26 to perform on / off of the clutch.

[0033]

As is apparent from the above description, according to the present invention, one connecting means to which the manual operating lever is connected and the other connecting means to which the hand operating lever is connected are independent of and parallel to each other. The manual operation lever and the hand operation lever allow the same clutch to be turned on and off by slidably connecting to the clutch operating means, so that the configuration of the operation system is simplified and the space can be reduced in size. Adjustment of the two connecting means can be easily performed at the same location, and therefore, an effect that assembly can be facilitated is obtained.

According to another aspect of the invention, when one of the manual operation lever and the hand operation lever is operated alone, the connecting means connected to the other operation lever also operates. Therefore, the connecting means connected to the other operation lever does not bend and deform.

Further, according to another invention, the thickness of the wire forming the connecting means is made different between the manual operation lever side and the hand operation lever side, and the manual operation lever side is made thicker.
It is possible to identify when adjusting connecting means with different lengths, and because the wire is hard and soft due to the difference in thickness, both the way of connecting the wire and the clamping method can be passed according to the hard wire, so it looks good good.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a walking-type work vehicle according to the present invention.

FIG. 2 is a plan view showing the walking type work vehicle according to the first embodiment.

FIG. 3 is a side view showing an operation device in the walking-type work vehicle according to the first embodiment of the present invention.

FIG. 4 is a plan view of the same.

FIG. 5 is a side view showing a handle portion of the operating device in the walking type work vehicle.

FIG. 6 is a perspective view showing an example of an operation device in a conventional walking-type work vehicle.

[Explanation of symbols]

 2 Manual Operation Lever (Work Clutch Lever) 5 Manual Operation Lever (Running Clutch Lever) 18 Hand Operation Lever 21 Connecting Means (Sub-side Operation Wire) 22 Connecting Means (L-Shaped Metal Fitting) 23 Connecting Means (Clutch Spring) 24 Clutch ( Work clutch) 26 Clutch operating means (clutch arm) 36 Handle 36a Grip

Claims (3)

[Claims] 1. An operation device for a walk-behind work vehicle, comprising: a manual operation lever for operating a clutch, and a hand operation lever provided on a grip portion of a handle for operating the clutch. A lever that is connected to each of the lever and the hand control lever; and a clutch actuating means that switches the clutch on and off. The two connection means are respectively connected to the manual operation lever, the hand operation lever, and the clutch. An operating device for a walk-behind work vehicle, wherein the operating device is directly connected to an operating means. 2. A connecting part between the connecting means and the clutch operating means is provided with a connecting part between the other connecting means and the clutch operating means when the clutch operating means is operated by one of the connecting means. The operating device for a walk-behind work vehicle according to claim 1, wherein a play is formed. 3. The connection means directly connected to the manual operation lever and the hand operation lever is formed by a wire, and the diameter of the wire connected to the manual operation lever is connected to the hand operation lever. The operating device for a walk-behind work vehicle according to claim 1 or 2, wherein the operating device is formed to be thicker than a diameter of the wire to be formed.