JPH07300076A - Riding rice transplanter - Google Patents

Abstract

(57) [Abstract] [Purpose] To make it possible to comfortably control the traveling vehicle body from the outside of the vehicle while having a simple and inexpensive configuration that effectively uses the adjacent marker that is originally provided in the riding type rice transplanter. [Structure] In a riding type rice transplanter, a steering link mechanism 14 for interlockingly connecting a steering wheel steerable from a riding position and a steered wheel 1, a storage posture in which a swing end is close to a traveling vehicle body 3, and the swing. A linking mechanism A is provided for linking the adjacent marker 9 whose position is changeable by swinging about the vertical axis P1 so as to be able to cancel the linking with the working posture in which the end is separated from the traveling vehicle body 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided on both the left and right lateral sides of the front part of a running vehicle in a retracted position in which the swing end is close to the running vehicle and in a working position in which the swing end is separated from the running vehicle. The present invention relates to a riding-type rice transplanter equipped with an adjacent marker whose posture can be changed by swinging about an axis.

By the way, the adjoining marker is arranged by advancing the marker portion along the adjoining planted seedling in a state in which the posture is changed to the working posture at the time of planting for seedling planting work.
The seedlings are planted in parallel with the planted seedlings at regular intervals.

[0003]

2. Description of the Related Art In the above-mentioned riding type rice transplanter, for example,
Access to and from the fields was done by directly overcoming the ridges or by traveling on the slope formed on the ridges. Incidentally, this slope is generally formed in a steep slope in order to effectively use the field scene. Also, when using a truck or other transport vehicle to and from the field, load and unload the riding-type rice transplanter to and from the platform of the transport vehicle on the footboard that has been handed over to the platform of the transport vehicle. Was going by. These travelings are carried out by the operator in a steering operation while riding on the traveling vehicle body. However, if the traveling vehicle body tilts considerably, it may cause anxiety and fear to the onboard driver.Therefore, it is desirable to carry out driving operation of the traveling vehicle body from outside the vehicle when the vehicle is alighted. It is rare.

Therefore, in the prior art, for example, the actual Kaisho Sho 52-
As disclosed in Japanese Laid-Open Patent Publication No. 76032, a detachable auxiliary handle for operating the steering of a traveling body of a passenger work vehicle from outside the vehicle is attached to a pitman arm so as to extend toward the front of the traveling body. In some cases, the steering operation of the traveling vehicle body can be performed from outside the vehicle when the vehicle is alighted.

[0005]

However, according to the above-mentioned prior art, when the auxiliary handle is attached to the pitman arm, the auxiliary handle extends to the front of the traveling vehicle body. In a situation where a work vehicle is lowered from the carrier bed or ridges of a transport vehicle across a sloping walking board or slope, the operator feels fear and intimidation that the work vehicle may slide down. There was room for improvement for the operator to work comfortably.

An object of the present invention is to make it possible to comfortably control the traveling vehicle body from the outside of the vehicle while having a simple and inexpensive structure which effectively uses the adjacent marker originally provided in the riding type rice transplanter. It is in.

[0007]

To achieve the above object, according to the present invention, in a riding type rice transplanter, a steering link mechanism for interlockingly connecting a steering wheel and a steering wheel steerable from a riding position, and a swinging mechanism. A linkage mechanism that releasably links an adjacent marker whose posture is changeable by swinging about the vertical axis in a storage posture in which the moving end is close to the traveling vehicle body and in a working posture in which the swinging end is separated from the traveling vehicle body. Was set up.

[0008]

According to the present invention, since the adjacent marker is originally provided on the lateral side portion of the front portion of the traveling vehicle body so as to be swingable around the vertical axis, the adjacent marker and the steering mechanism are not provided. When linked with the linkage mechanism, when operating the traveling vehicle body with the vehicle getting off, the operator inevitably operates the traveling vehicle body from the front, lateral and outer sides of the traveling vehicle body.
There is no fear or intimidation of the work vehicle slipping down on the operator. Further, since the adjacent markers are provided on both the left and right lateral sides of the front part of the traveling vehicle body, the operator can easily operate by switching the linkage between the steering mechanism and the steering mechanism to either of the left and right adjacent markers. It is possible to control the traveling vehicle body from outside the vehicle by using the adjacent marker on the side. Moreover, since the adjacent marker is also used as an auxiliary handle for operating the traveling vehicle body from outside the vehicle when the vehicle is dismounted, it is advantageous in terms of manufacturing and manufacturing costs as compared with the case where a new auxiliary handle is provided. Can be

[0009]

According to the present invention, therefore, the vehicle can be driven from the outside of the vehicle body in a dismounted state while having a simple and inexpensive structure that effectively uses the adjacent marker originally provided in the riding type rice transplanter. It has become possible to operate the vehicle body comfortably without feeling fear or intimidation from the direction that is easy for the operator to operate.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the entire side surface of a riding-type rice transplanter. This riding-type rice transplanter has front wheels 1 as steering drive wheels.
And a rear wheel 2 serving as a drive wheel, and a seedling planting device 4 connected to the rear portion of the rear vehicle body 3 so as to be lifted and lowered. An engine 5 is mounted on the front part of the traveling vehicle body 3. Power from the engine 5 is
It is configured to be supplied to the front wheels 1, the rear wheels 2, and the seedling planting device 4 via a belt-type main clutch mechanism 6 and a mission case 7. Adjacent markers 9 are provided to the left and right lateral sides of the front part of the traveling vehicle body 3 via brackets 8.
Is pivotally attached. An operation panel 10 is provided in the control section of the traveling vehicle body 3.
The operation panel 10 is provided with a steering handle 11 that can be operated from the riding position, various switches (not shown), and various instruments (not shown).

As shown in FIG. 2 to FIG. 4, the left and right adjacent markers 9 are pivotally supported by the bracket 8 and are pivotally supported 9A,
By the arm portion 9B extending horizontally from the pivot portion 9A and the marker portion 9C extending downward from the swing end of the arm portion 9B in a direction perpendicular to the arm portion 9B, the arm portion is formed. The retracted posture in which the swing end of 9B is close to the front part of the traveling vehicle body 3, and the state in which the swing end of the arm portion 9B is separated from the traveling vehicle body 3 and the arm portion 9B is orthogonal to the side surface of the traveling vehicle body 3 The posture can be changed by swinging around each vertical axis P1. A link arm 9a is provided on the pivot portion 9A of the adjacent marker 9 on the left side so as to project toward the front in the acting posture.

As shown in FIGS. 2 to 4, the steering handle 11 includes a steering shaft 12 which is rotatable integrally with the steering handle 11 and a steering gear box 1.
Various gears (not shown) installed in the vehicle 3 and a front wheel 1 are interlocked with each other via a steering link mechanism 14. The steering link mechanism 14 includes a pitman arm 14A that is integrally rotatable with a gear shaft 13a protruding downward from the steering gear box 13, a left and right front wheels 1 and a knuckle arm 14B that is integrally rotatable around a vertical axis P2. It is composed of a tie rod 14C connecting the pitman arm 14A and the left and right knuckle arms 14B. That is, the steering force generated by the operation of the steering wheel 11 causes the left and right knuckle arms 1 to move.
The left and right front wheels 1 are steered using the vertical axis P2, which is the pivotal fulcrum of 4B, as the fulcrum. At the swinging end of the pitman arm 14A, the link portion 1 that is in a state of protruding toward the front when the traveling vehicle body 3 is in the straight traveling state.
4a is extended.

At the lower left of the front portion of the traveling vehicle body 3, the horizontal axis P is provided by the boss portions 3a and 3b of the vehicle body frame 3A.
A linkage rod 15 supported so as to be rotatable around 3 and slidably movable on a horizontal axis P3 is supported, and one end portion of the linkage rod 15 is a left side which is switched to the action posture side. A substantially U-shaped first engaging portion 15a engageable with the swinging end of the linkage arm 9a of the adjacent marker 9 is provided so as to project in a direction orthogonal to the longitudinal direction of the linkage rod 15. Also, the link rod 15
The other end of the pitman arm 14A, the linkage portion 14a
A second U-shaped second engaging portion 15b that can be engaged with is protrudingly provided in a direction opposite to the protruding direction of the first engaging portion 15a.
An operating lever 15A for rotating the linkage rod 15 is provided at the end of the linkage rod 15 on the side of the first engaging portion 15a.

With the above configuration, during boarding operation, as shown by the chain double-dashed lines in FIGS. 3 and 4, the linkage lever 15A is rotated about the horizontal axis P3 by the operation lever 15A to operate the linkage rod. The first engaging portion 15a of 15 and the swinging end of the linking arm 9a of the left adjacent marker 9, and the second engaging portion 15b of the linking rod 15 and the linking portion 1 of the pitman arm 14A.
By releasing the respective engagements of 4a, the steering operation of the traveling vehicle body 3 can be performed by operating the steering handle 11 from the riding position. Further, when the rice transplanter is allowed to cross over a steep walking board or a slope, as shown by the solid lines in FIG. 3 and FIG. The posture is changed around and the linkage lever 15 by the operation lever 15A is used.
The pivoting operation around the horizontal axis P3 of the first engaging portion 15a of the linkage rod 15 and the linkage arm 9a of the left adjacent marker 9
By engaging the swinging end and the second engaging portion 15b of the linkage rod 15 and the linkage portion 14a of the pitman arm 14A, respectively, the front left outer side of the traveling vehicle body 3 in the dismounted state The steering operation of the traveling vehicle body 3 can be performed by swinging the left adjacent marker 9 around the vertical axis P1 from one side. That is, the boss portions 3a and 3b of the vehicle body frame 3A, the linking arm 9a of the left adjacent marker 9, the linking portion 14a of the pitman arm 14A, and the linking rod 15 respectively.
Thus, a linking mechanism A that links the left-side adjacent marker 9 and the steering link mechanism 14 in a releasable manner is configured.

As shown in FIGS. 2 and 4, the main clutch mechanism 6 includes an output shaft 5a of the engine 5 and a transmission case 7.
Belt type transmission system 6A interposed between the input shaft 7a of the
And a tension arm 6B for switching the belt type transmission system 6A between a tension state (power transmission state) and a relaxation state (power cut state). Belt type transmission system 6A
Are two systems with different gear ratios, and tension arm 6B
Is configured so that one of the two systems of belt type transmission system 6A is brought into a tensioned state by operating the sub-transmission lever 16, and by operating the sub-transmission lever 16, high and low two-stage gear shifting can be performed. Has become. On the other hand, as shown in FIG. 3, the linkage rod 15 is provided with a square shaft portion 15B.
A boss member 18 having a swinging arm 18a linked to the sub-transmission lever 16 via a link 17 is integrally rotatable with respect to the link rod 15 and relatively slides on the angular shaft portion 15B. When the left adjacent marker 9 and the steering link mechanism 14 are linked with each other by the linkage rod 15, the auxiliary shift lever 16 is always positioned at the low speed position. That is, when the steering operation of the traveling vehicle body 3 is performed by the swing operation of the left adjacent marker 9 around the vertical axis P1 in the dismounted state, the traveling vehicle body 3 travels at a low speed. Reference numeral 19 in FIG. 3 is a friction type holding mechanism for holding the posture of the linkage rod 15 around the horizontal axis P3.

[Other Embodiments] Other embodiments will be listed below. Linking part 1 that engages with the second engaging part 15b of the linking rod 15.
4a may be provided at any place in the steering link mechanism 14, for example, may be provided on the tie rod 14C. The linkage rod 15 is provided on each boss portion 3 of the body frame 3A.
It may be configured to be attachable to and detachable from a and 3b. A linking arm 9a that projects forward in the action posture of the right adjacent marker 9 is provided on the pivot portion 9A of the right adjacent marker 9, and the right adjacent marker 9 and the steering link mechanism 14 are connected to each other by the linking rod 15. May be linked with each other to perform the steering operation of the traveling vehicle body 3 in the state where the vehicle is dismounted by the swing operation of the right adjacent marker 9. A linking arm 9a is provided on the pivotally supporting portion 9A of each of the left and right adjacent markers 9 so as to project toward the front in the action posture of the adjacent markers 9, and either the steering link mechanism 14 or the left or right depending on the situation and preference. The adjacent marker 9 may be linked by the linking rod 15. The first engaging portion 15a of the linkage rod 15 and the left side adjacent marker 9
The swinging end of the linking arm 9a, the linking part 14a of the pitman arm 14A and the second engaging part 15b of the linking rod 15,
Each of the above may be detachably and pivotally connected by a pin or the like. In this case, the linkage arm 9 of the adjacent marker 9
The linking mechanism A is constituted by the linking part 14a of the pitman arm 14A and the linking rod 15.

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

[Brief description of drawings]

[Fig. 1] Overall side view of the riding rice transplanter

FIG. 2 is a side view of a front half of a riding-type rice transplanter showing a structure of a linkage mechanism.

FIG. 3 is a plan view showing the configuration of a linkage mechanism.

FIG. 4 is a side view showing the configuration of the linkage mechanism and the linkage between the linkage mechanism and the auxiliary shift lever.

[Explanation of symbols]

 1 Steering Wheel 3 Running Car Body 9 Adjacent Marker 11 Steering Handle 14 Steering Link Mechanism A Linkage Mechanism P1 Vertical Axis

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B62D 1/24 9142-3D

Claims (1)

[Claims] 1. A steering link mechanism (14) for interlockingly connecting a steering wheel (11) steerable from a riding position and a steering wheel (1), and a swinging end of a traveling vehicle body (3).
And the swinging end close to the vehicle is such that the swinging end is the traveling vehicle body (3).
The riding-type rice transplanter provided with a linkage mechanism (A) that links the adjacent action marker (9) whose posture can be changed by swinging around the vertical axis (P1) so as to be released from the action posture separated from the action posture (A).