JPS5945264A - Steering device for self-propelled type riding farm working machinery - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steering device for a self-propelled riding working machine such as a transplanter, which enables the steering wheel to be operated by foot in a riding position, and also in a companion position on the side of the machine. The purpose is to enable manual steering operation.

For example, in a self-propelled riding transplanter, the operator must take out the seedlings from the seedling box and place them on the comparer of the seedling feeder ilt. Therefore, in the past, as shown in Japanese Unexamined Patent Publication No. 56-48804, the left and right foot pedals are interlocked with the steering wheels, and by pushing one of the foot pedals, The steering wheel is rotated around a vertical axis to perform steering operation.

Such a conventional steering device is provided with a handle that rotates the wheel mounting shaft of the steering wheel so that an operator can get off the vehicle and steer the vehicle when traveling on the road.

However, this handle is located in front of the steering wheel, making it difficult to steer the handle, and if used when moving between furrows in the field, there is a possibility that the operator may trip over the furrow.

The present invention solves the problems of the conventional device, and is characterized by having left and right steering wheels that are movably connected, and a wheel mounting shaft of each steering wheel that is interlocked and connected. In a self-propelled riding work machine having a steering arm that can be operated by foot movement from the driver's seat, at least one of the steering arms is configured to move the machine body from a position in which the rider's foot movement can be performed with respect to the vehicle width mounting axis. It protrudes outward and can be freely changed to a position that allows manual dismounting.

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

In Figures 1 to 6, (1) is a traveling working machine, exemplified by a transplanter, with a pair of left and right steering wheels (2) on the front side.
However, on the rear side, a pair of left and right drive wheels (3) are rotatably supported around the horizontal axes of their respective axles (41 (5).) (6) is framed in a rectangular shape in plan view. In this aircraft, the driver's seat (7) is mounted on the driving wheel (3) side of the aircraft (6). (8) is the engine, and the transmission case is located in the center of the vehicle at the rear end of the aircraft (6). The engine (8) is mounted on a mounting table αQ which is extended and fixed in an upwardly inclined manner behind the transmission case (9), and 0D is its fuel tank.

A gear transmission (not shown) is built into the transmission case (9), and the gear transmission and the engine (8) are interlocked via a winding transmission body a'a'2. This is the transmission case of the hanging transmission body 0z, and connects the side wall of the gear transmission case (9) and the side wall of the engine (8).

The output side of the gear transmission in the gear transmission case (9) has a pair of left and right horizontal axes, and a pair of left and right auxiliary transmission cases 09 that can swing freely about the horizontal axis α4 as a fulcrum and have a built-in wrap-around transmission body.
are provided in a rearwardly downwardly inclined shape, and the axle (5) is pivotally supported in the lower part of each auxiliary transmission case 09 as an externally protruding shape.

αG is the main clutch, and in this example, the tension is set so that the wrapped transmission body U can be fully tensioned and relaxed, and as shown in FIG. 1, there is a horizontal pivot pin σ71. Tension is applied to the tension arm 081 which is pivoted through '.

-Lee ag * tm freely rotatable, tension nookune■
And winding transmission body Q? J is biased in the tension direction.

21) is a brake that brakes the gear transmission, and 2 is its brake cam lever.

In the drive wheel lifting device, there is a fixed guide plate □□□ provided at the rear of the driving rF: (7), and an operation lever that can be fixed to the guide plate @. It consists of interlocking rods l2f3 etc. which are pivotally connected to the pair of left and right auxiliary transmission cases 09 in conjunction with the operation lever (-■), and the pair of left and right drive wheels (3) is activated by the same front and rear operation of the operation lever (to). is the horizontal axis (141
They can be raised and lowered in opposite directions using the fulcrum as a fulcrum, and their outer positions can be fixed by engaging the operating lever G with the guide plate.

(A) is a support frame for the steering wheel (2), which is fixed to the front part of the aircraft body (6), and a cylinder (5) is fixed to the left and right ends of the support frame (A), respectively; This cylindrical body ■ has a steering wheel (
The wheel mounting shaft (G) of 2 is inserted into a two-pronged holder (7) connected to the lower part of the wheel mounting shaft (support), into which the wheel mounting shaft (G) is rotatable about a substantially vertical axis and can be freely adjusted and fixed in the height direction. A steering wheel (2) is rotatably supported via the axle (4), where:
The steering wheel (2) is of caster type.

0υ is a tie rod, which is pivotally connected to the arm support protruding from a pair of two-pronged holders (2) on the left and right sides of the center, and preferably has a turnbuckle structure to allow for expansion and contraction. The pair of left and right steering wheels (2) are dynamically connected by this tie rod 6η.

A holder (to) formed of a cylindrical body is fitted and fixed to the upper part of the left wheel mounting IFllII2'l, and this holder (
Set arm @ (to) 20,000 times in the radial direction from the outer peripheral surface of (to)
is installed protrudingly.

Each setting arm (9) (c) has an upwardly open two-way arm at its free end.
In addition, a regulating portion (87aX 88a) is formed, and the first setting arm (9) is approximately parallel to the direction of movement of the steering wheel (2), and strictly speaking, it is arranged so as to face outward from just behind when the steering wheel (2) is traveling straight. , the second setting arm (c) is disposed substantially perpendicularly, facing outward, and slanting upward.

Further, a rotating body ζ31 is rotatably fitted in the holder (to) above the setting arm @□□□ with its vertical position restricted, and this rotating body CH! Bracket on J (898
) is installed, and the pin (89a) is attached to this plaque (89a).
A steering arm GIO) is pivotally supported via b) so as to be rotatable about a horizontal axis.

The steering arm (G) has one end pivoted to a pin (89b) and the other end of a bar (40&) that is extendable and retractable. A U-shaped member (40C) that forms a footrest portion t411 is welded to the other end of this knob member (40b). The rod material (40B) has a hole (40d) fig, a via' material (,1ob) [a similar hole (40e) and a threaded hole t4of), respectively, and a bolt (40g) 1Fr,
Insert into the hole (4oe) and any hole (40d) and screw into the screw hole (
4of), and the length of the steering arm (g) can be adjusted by selecting the hole (4Od).

The steering arm α0 is rotatable approximately horizontally and vertically around the wheel mounting shaft and the pin (a9b), and its midway portion is connected to the two orifices of both setting arms (2) (to). Regulation Department (8
7B) (l18a).

At the free ends of the left and right steering arms 0Q, rotating pedals /L/former 144J are respectively pivotally supported via bins (421'i), and the left rotating pedal y (431 is attached to the clutch pedal, and the right [12I
The four pedals are brake pedals.

The clutch pedal (431) and the tension arm (181) of the main body (bm) are connected to the Bowden wire (4[i+
It is interlocked and connected through the left footrest (411), and when CJ's heel is on the left foot rest (411), the quartch pedal A/(4
3] is possible.

Brake pedal A/ (441 is connected to the cam lever ~■ of brake t2D via Bowden wire H6+k, and by stepping on it with foot C placed on right footrest C13), brake c! 1) is configured so that it can be operated.

As shown in FIGS. 1 to 6, the steering arm cQ is
When engaged with the two-pronged restriction part (87&) of the setting arm (Z), the steering arm (G) becomes rotatable together with the setting arm (B) and the single-wheel take-up shaft, and the footrest at its free end (411 is the foot device of the operator seated in the driver's seat (7), and this is the posture during work in the order of the steering arm (riding foot steering operation posture), and the operator pushes the foot O). As a result, the steering wheels (2) are steered.

From the above posture, move the steering arm Oα to the bottle (891+)
When the steering arm G11l is rotated upward around the wheel mounting shaft, rotated outward around the wheel mounting shaft, and rotated downward around the entire center of the bottle (19b), the steering arm G11l is rotated as shown by the imaginary line in FIG. It engages with the bifurcated restriction portion (88B) of the second setting arm (to).

As a result, the steering arm (G) protrudes outward and upward from the fuselage (6), and connects the wheel mounting shaft to the second setting arm (C).
And the steering wheel (2) can be fully rotated and steered.

This position of the steering arm is the manual steering operation position when the operator gets off the vehicle when not working.
1), if the operator cannot perform foot steering while riding on the machine (1), the operator accompanies the side of the transplant machine (1) and performs the steering operation using the steering arm (I0 gold proboscis). When the vehicle is in the manual steering operation position for getting off the vehicle, it is easier to manually operate the vehicle if it is inclined upward from the wheel attachment Flii@.

Figure 4 shows a modified example of the steering arm (a), with bif material (
40b) The length can be freely adjusted by advancing and retracting the 14 bar material (40a) and the bar material (401)), and rotation is prevented by a locking nut (401). Further, the footrest (41) is formed of an L-shaped bar and also serves as a pivot for the rotating bedder /l/[431].

Fig. 5 shows a modification of the mounting part of the steering arm (9), and the holder (to) has two pipes υrut 3 in the radial direction.
) are melted, and both pipes (72) (73;
I/i, the end of the steering arm (g) can be inserted, and the end has a circumferential groove or a recess, and each pipe 2
! (73) and is screwed into the butterfly port (75j) to prevent it from coming out.

The above-mentioned vibration force corresponds to the first setting arm in the vehicle steering direction 1, and by inserting and fixing the steering arm (A), the steering arm Q is set by the feet of the driver seated in the driver's seat (7). It is in a position where it can be operated, and the pipe (73) is the second one for disembarking steering.
Corresponds to the setting arm, and the steering arm QO'r vibe (72
By removing it from 1 and replacing it, it will be in a position where manual steering for getting out of the vehicle is possible.

Note that the present invention is not limited to the above-described embodiments and modifications; for example, the steering arm 00 that can change its posture may be configured only on one side, the left or the right, or the steering arm (to)
The end of the steering arm (2) is directly fitted to the wheel mounting shaft (4), and the entire bottle penetrating through both can be freely inserted and removed, and by inserting and removing this bottle, the steering arm can be freely changed in position around the wheel mounting shaft. In addition, it may be configured to be fixed.

In addition, in the figure, OTI? 'i, furrowing device, (4~ is planting device, t49) ld soil covering device, furrowing device (4~
A planting device (481) is provided behind the planting device (481), and a soil covering device (49) is provided on both sides of the back of the planting device (481).

That is, a transplant frame (52'f: provided extending rearward) is swingably pivoted about the horizontal axis (51) at the front end of the lower abdomen of the fuselage (6), and a bridge between the rear part of the transplant frame sister and the fuselage (6) is provided. A spring support 3) is provided to urge the transplant frame (52) in the direction of contact with the ground.

The pair of left and right covering soil wheels (A0) are rotatably supported via the horizontal shaft (54) on the transplant frame (transplant frame) so that the distance between them on the contact side is narrow, and the distance between them on the repulsion side is wide. A planting disk and a planting arm (mark 5) are rotatably provided in front of the inclined horizontal axis +54+ of the transplant frame sister through the horizontal horizontal axis position, and the inclined horizontal axis (54) and the horizontal horizontal axis ( 57! are interlocked and connected by a winding body, and a planting device (481) can be driven here.

Hachi is a seedling feeding device located in front of the driver's seat (7).
The first scoop is conveyed horizontally while being held and conveyed vertically.
It consists of a conveyor mouth Jj and a second conveyor (6Q, etc.) that pinches and conveys the seedlings from the first conveyor 159 to the throat of the planting device. By interlocking @1) with the winding transmission body (G2), the second conveyor (60) etc. can be driven in synchronization with the planting operation via the bevel gear transmission body (G2).

Furthermore, (63) is a manual handle, which is provided in a forward protruding manner on the steering wheel support frame (A) and is located between the steering wheels (2). 65)
f: through clutch OG and h as shown through brake C
D can be operated.

(66) is a manual clutch operating lever, located on the negative side of the driver's seat (7), with Bowden wire (6η, spring +68t).
Clutch OG can be operated via i. Also, (6
9) shows a seedling box mounting stand.

According to the present invention described in detail above, at least one steering arm (G) interlockingly connected with the wheel attachment III-III can be pushed and operated by an operator seated in the driver's seat (7) with his or her foot (C). The position can be changed freely between the position and the position that allows the operator to get off the machine and manually operate the aircraft while accompanying the side of the aircraft (6), so it can be used not only when riding, but also when driving on the road or in the furrows. Even when moving, the working machine (1) can be manually steered from the side, making it very easy to maneuver the vehicle to get off the vehicle, and the steering performance can be improved.

[Brief explanation of drawings]

1 to 3 show embodiments of the present invention.
The figure is a side view of the entire transplanter, FIG. 2 is a plan view thereof, FIG. 6 Fi is a perspective view of the main parts of the steering device, FIG. The figure is a perspective explanatory view showing a modified example of mounting the steering arm. (1)... Traveling work machine, (2)... Steering wheel, (6
)...Airframe, (7)...Driver's seat, Kanji...Wheel mounting shaft, 0])...Tie rod, (to)...Hononda,
@ (to)...setting arm, kiln...rotating body, Oo...
・Steering arm, (Sen...foot rest, U rice...rotation beda! Shikaku clutch hetal) 1441...rotation pedal (brake pedal), C】...foot. Patent applicant Daisaku [1 Iron Works Co., Ltd.-Sou]

Claims (1)

[Claims] 1. Left and right steering wheels (2) that are interlocked and connected, and a steering arm that is interlocked and connected to the wheel mounting shaft (a) of each steering wheel (2) and that can be operated by foot from the driver's seat (7). 7) In the self-propelled riding work machine having the following, at least one of the steering arms 0Q protrudes outward from the machine body (6) from a position in which riding and foot operations are possible with respect to the wheel-mounted axle, and allows manual dismounting. A steering device for a self-propelled riding work machine, characterized in that the steering device is provided so that the posture can be adjusted to an operable posture.