JPH09103109A - Coupling device of working machine in tractor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coupling device of a working machine in a tractor so that the tractor progresses toward the standing still working machine having a sign for a specific structure, easy in steering operation, and excellent in working efficiency and safety. SOLUTION: This coupling device of a working machine in a tractor is provided by installing a sign 15 having two vertical surfaces 15a, 15b crossing each other in a V-shape by a same angle as viewed from the above relative to the shaft center of front and rear direction in the working machine so that the tractor progresses toward the standing still working machine 8, and differentiating these two surfaces 15a, 15b from each other by color using different colors. Further, it is preferable to install the sign 15 right and left symmetrically on a cover 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a tractor in which working devices such as a rotary device and a plow are detachably mounted on a rear portion or a front portion.

[0002]

2. Description of the Related Art A link (three-point link) having a single pair of left and right lower parts and a central upper part is provided so as to project rearward or forward from the body of a tractor, and the tractor is moved backward or forward. After approaching the stationary work equipment,
The working equipment is mounted on the tractor by attaching the ends of the lower pair of links to the lateral pins of the working equipment and by attaching the ends of the upper links to the central upper portion of the working equipment with the lateral pins. (Manual type). Or, in the automatic type, a mountain-shaped mounting frame is provided at the end of the link when viewed from the front,
When the tractor is moved backward or forward, the work equipment mounting frame is automatically combined with the mounting frame.

[0003]

In the above mounting, if the traveling direction of the tractor does not coincide with the longitudinal axis of the working equipment, the two may not be connected. The present invention is intended to easily match the traveling direction of the tractor with the longitudinal center of the working equipment.

[0004]

The present invention provides a tractor 1.
Is provided so as to move toward the stationary work equipment 8 and has two vertically oriented surfaces 15a, 15b intersecting with each other in a V shape at the same angle when viewed from above with respect to the longitudinal axis. The working machine 8 is provided with a sign 15 having two surfaces 15 thereof.
Reference characters a and 15b are connection devices for working machines in tractors which are colored differently from each other.

[0005]

The above-mentioned mark 15 is provided with the left and right faces 15a, 15 which are color-coded when viewed from the longitudinal axis of the working equipment 8.
The areas of the left and right surfaces 15a and 15b, which are color-coded, are remarkably different from each other when viewed from a position where the areas of b coincide and are displaced from the right or left axis. Therefore, when the tractor 1 is brought closer to the stationary work equipment 8, the marker 15 is attached from the tractor 1 side.
When the areas of the left and right surfaces 15a and 15b, which are color-coded, are the same, the tractor 1 continues to proceed, and when they are different, the left and right surfaces 15a and 15b are
The traveling direction of the tractor 1 is corrected so that the areas of b match.

[0006]

According to the present invention, when the traveling direction of the tractor 1 is deviated from the longitudinal axis of the work equipment 8, the marker 15 attached to the work equipment 8 as viewed from the tractor 1 side.
Since the areas of the colored surfaces 15a and 15b appear to be significantly different, it is preferable to compare the areas and steer the moving direction of the tractor 1 so as to match them, and the operation of the tractor is easy.

[0007]

Next, an embodiment of the present invention will be described. FIG.
As described above, the tractor 1 can be moved forward or backward by rotating the pair of front wheels 2 and 2 and the rear wheels 3 and 3, respectively. A three-point link 5 is provided so as to project rearward from the machine body 4. The three-point link 5 is composed of a pair of left and right lower links 5a, 5a at the lower part and a single top link at the upper part in the center, but the top link is not shown in the drawing for the sake of simplicity. . Also, the front wheels 3,3
Is steered by the steering wheel 6, and the rotation of the engine (not shown) is transmitted to the rear wheels 3, 3 via the clutch 25 (FIG. 8). Braking is applied to 3.
Further, the lower links 5a, 5a are configured so that a lift arm (not shown) operated by a hydraulic cylinder swings about the axis of the front end so that the rear end moves up and down.

The working device 8 in FIG. 1 shows a rotary device 8 as shown in FIG. That is, when the left and right transmission cases 9 and the lower ends of the support plates 10 support both ends of the tiller shaft 11 and the power of the tractor 1 is transmitted to the input shaft 12, the claws 1
3, 13, ... Rotate to plow the soil. A semi-cylindrical cover 14 covers it.

The sign 15 is constructed as shown in FIG.
That is, the marker 15 is viewed from above, and the axial center 1 in the front-back direction is
6 has a pair of left and right vertical surfaces 15 and 15b intersecting each other in a V shape at the same angle, and the left surface 15a is white.
The right surface 15b is colored red (hatched in the figure).
A pair of signs 15 and 15 are symmetrically provided on the cover 14, and when the operator seated in the seat 17 of the tractor 1 turns around, the left white surface 15a and the right red surface 15b can be seen. There is. In addition, this sign is
A single unit attached to the center of the rotary device 8 may be used.

In this device, a tractor 1 and a rotary device 8 are provided.
When installing, use as follows. The tractor 1 is moved backward (backward) and brought closer to the stationary rotary device 8. At this time, the operator seated in the seat 17 turns around and looks at the white surface 15a and the red surface 15b, and when the areas look the same, the operator continues to move backward. If there is a difference between the white surface 15a and the red area,
The steering wheel 6 or the left and right brakes are individually operated to correct the reverse direction, and after matching these, the vehicle is moved backward. Then, the tractor 1 and the rotary device 8 approach each other with their axial centers in the front-rear direction aligned, and the rear ends of the three-point links 5 are easily attached to the rotary device 8.

As shown in FIG. 6, the image input device 18 is installed in the body 4
Alternatively, the image of the sign 15 may be provided in the rear of the steering wheel 6 in front of the steering handle 6 by a cathode ray tube, and the operator may drive the tractor while looking at it in a forward posture. The image input device 18 processes the white surface 15 by the image processing.
The area of a and the red surface 15b is poured out by the number of pixels, and the control device 1
9 (Fig. 8) is the left and right solenoids 2 so that they match.
Oil can be sent to the cylinders 7 and 7 at 0 and 20 respectively, and the rear wheels 3 and 3 can be individually braked to support the operation of the steering handle 6 by the operator. At this time, the steering wheel 6
The rear wheels 3 and 3 can be provided so as to be braked according to the turning angle of the.

As shown in FIG. 7, as the tractor 1 approaches the rotary device 8, the marker 15 on the image input device 18 is moved.
The image of becomes bigger. By utilizing this, the size of the marker 15 at the distances D ₂ , D ₁ , D ₀ (FIG. 6) between the tractor 1 and the rotary device 8 as shown in FIG. When the tractor 1 moving toward the device 8 reaches the position of the distance D ₂ , the solenoid 21 sends oil to the lift cylinder 22, and the lift arm 3
5 lowers the rear ends of the lower links 5a, 5a so that the height of the mountain-shaped mounting frame in the automatic coupling device matches the height of the mounting frame of the working device 8. When the position of the distance D ₁ is reached, the solenoids 20 and 20 send oil to the cylinders 7 and 7, and the half brakes act to decelerate the rear wheels 3 and 3. Then, when the position of the distance D ₀ is reached, the solenoids 20, 20 further (or another solenoid) sends oil to the cylinders 7, 7, the brake is operated, and the rotation of the rear wheels 3, 3 is stopped. The solenoid 23 may send oil to the clutch cylinder 24, and the clutch 25 may block the power transmitted from the engine to the rear wheels 3, 3.

The stand of the rotary device 8 is shown in FIGS.
It can be configured as follows. Vertical guide groove 26
A guide plate 26 having a is fixed to the outside of the transmission case 9, and a button 27 is vertically movable along the guide groove 26a. The middle portion of the pair of supporting rods 28, 29 is swingably attached to the transmission case 9 by the front and rear supporting shafts 30, 31 in the middle of the guide groove 26a, and the long holes 28a, 2 are respectively provided.
The button 27 is engaged with 9a. Shoes 32a, 33
The supporting legs 32 and 33 having a are respectively the supporting rods 28 and 29.
It is attached to and retractable from. Therefore, button 27
9 is stopped on the guide groove 26a, the support legs 32 and 33 are moved to the positions shown in FIG.
The lower shoes 32a and 33a are grounded to support the rotary device 8 as shown in FIG. When the rotary device 8 is attached to the three-point link 5 and there is no risk of falling,
The button 27 is moved downward along the guide groove 26a and stopped. Then, the front and rear support legs 32 and 33 jump up in a V shape (FIG. 10), and the shoes 32a and 33a separate from the ground.
This can also be provided on the support plate 10.

[Brief description of the drawings]

FIG. 1 is a plan view of a tractor and a working device according to the present invention.

FIG. 2 is an enlarged front view of the work equipment.

FIG. 3 is a perspective view of the sign.

FIG. 4 is a front view of the pair.

FIG. 5 is a view of the pair as viewed from the front of an oblique direction.

FIG. 6 is a side view of the main part of the tractor and the working equipment.

FIG. 7 is an explanatory diagram showing the relationship between the distance between the tractor and the working device and the size of the image of the sign.

FIG. 8 is a block diagram of the control device.

FIG. 9 is a side view of a stand used in the working device.

FIG. 10 is an operation diagram thereof.

[Explanation of symbols]

 1 tractor 8 working equipment (rotary device) 15 sign 15a surface 15b surface

Continuation of the front page (72) Inventor Seiji Kananami 1 Yakura, Tobe Town, Iyo-gun, Ehime Prefecture Izeki Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] 1. Two vertical units provided so that a tractor 1 advances toward a stationary work implement 8 and intersecting with each other in a V-shape at the same angle as viewed from above with respect to an axial center in the front-rear direction. A connection device for a working machine in a tractor, in which a sign 15 having facing surfaces 15a, 15b is provided on the working machine 8, and two surfaces 15a, 15b of which are different from each other.