JPS5885760A - Sudden turning prevention device for agricultural 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 device for preventing sudden turns in agricultural machines equipped with crawlers, such as agricultural tractors, combines, or harvesters.

Ordinary four-wheeled tractors and automobiles can change direction at will by turning the handle, but with the above-mentioned crawler-type work equipment, when one clutch is disengaged, the direction is slowly changed in the direction in which it was disengaged. Then, when the clutch is released and the brake is applied to the crawler, the structure makes a sharp turn. Therefore, the above-mentioned tractor is equipped with a lever to disengage the clutch and a pedal to apply the brake, but in the tractor with an advanced structure (or one with an oil-worm structure), the lever and pedal are integrated into one, and - The direction can be changed simply by operating the control device.

In other words, when a lever such as a change lever is tilted a little, the clutch is disengaged, and then the brake is applied when the lever is tilted further.

The disadvantage of any agricultural machine is that a worker who is accustomed to using it will not operate the first stage clutch disengagement and second stage brake action differently, but when operated by an inexperienced worker, the first stage For example, a combine harvester may end up spinning in an unexpected direction in the field because it jumps through stages and suddenly applies the brakes. If this happens, the erect erect culms of the uncut land will be trampled over, so the present invention is designed to prevent this from happening.

In conclusion, the present invention is designed so that the operating device moves very lightly when the clutch is disengaged, but moves very heavily when the brake is applied, which is useful for those who are not familiar with the machine. Even if operated by a person, there will be no erroneous operation, and therefore, it is possible to prevent the combine harvester from running in an unexpected direction in the field.

The present invention allows agricultural tractors to be used like combine harvesters.
In a device configured to turn by disengaging the clutch in the first stage and applying the brake in the second stage, or in the reverse manner, the operating device is used for the first stage and the second stage. The gist of this book is the structure of a sudden turn prevention device for agricultural machinery that has a clear difference in resistance between the wheels and prevents it from suddenly going to the second stage, and is used in the so-called power steering lever. It is effective.

To explain with the drawing, (1) is a solenoid valve, and a switch box (2) for turning on/off the solenoid valve +11 is provided near it. (3) is an operating lever attached to the box (2);
2) is inserted into the interior through an opening (5) formed in the upper surface (4), and a disk (7) is attached at right angles to its lower end (6). The disk (7) and the lower end (6) are fixed, and a first spring (8) is interposed between the top surface of the disk (7) and the back side of the top surface (4) of the box (2). ing. That is, the first spring (8) causes the disc (7) to snap onto the bottom surface (9) of the box, and positions the operating lever (3) at the center of the opening (5). Oiυ is a switch. Regarding the switch α1aυ, when the lever (3) is tilted in the direction indicated by A in FIG. 2, the switch 0υ is turned ON, and when the lever (3) is tilted toward the mouth, the switch QO is turned ON. However, as can be seen by comparing Figures 3 and 2, the valve 02 provided at the bottom of the box (2) cannot be opened by simply tilting the lever (3) into the opening (5). Do not descend in the direction of C. However, if the box (2) is further rotated excessively from the state shown in Fig. 3 to the state shown in Fig. 4 against the elasticity of the second spring Q61, the box (2) will rotate as shown in Fig. It is a structure that tilts and therefore moves the valve Oa downward. In Fig. 1, cylinder 04 is activated when the ACD sensor detects it, and by moving the lever (:3) as shown in Fig. 3, microswitch a [01] is turned on.
Further, the brake O9 is configured to operate when the valve O9 is pushed down as shown in FIG.

Next, we will discuss the effect.

When you hold the operating lever (3) and tilt it in the direction of arrow A or the mouth against the elasticity of the first spring (8), the lever (3)
) is attached to the lower end (6) of the clutch mechanism ( The clutch mechanism on the right side is connected in Fig. 1, but the clutch mechanism on the right side is connected.
Since the left clutch mechanism is in the disengaged state, the aircraft will gradually turn to the left and move forward, and when the objective is achieved, the lever (3) will be returned to the vertical position and work will continue. However, at the end of the field, you have to make a sharp 180° turn to return, but at this time, the lever (3)
is forcibly tilted against the elasticity of the second spring ae as shown in Fig. 4, and the force acts on the valve 09, thus,
The left side of the traveling gear is completely stopped and only the right side is used to make sharp turns. Although the embodiment shown in FIG. 1 is described in great detail, it is only one embodiment and can be made into a very simple device.

The present invention is applicable to an agricultural tractor or a combine harvester, which is configured to turn by disengaging the clutch in the first stage and applying the brake in the second stage, or in the reverse manner. The operating device has a clear difference in resistance between the first stage and the second stage to prevent sharp turns in agricultural machinery so that the machine does not suddenly enter the second stage. Because of the structure of the device, people are not used to having to jump over the first stage clutch disengagement action and apply the second stage brake action, so it is effective when used in combine harvesters and the like.

[Brief explanation of the drawing]

Fig. 1 is a partially vertical side view, Fig. 2 is a longitudinal sectional view of the switch box, Fig. 3 is a state diagram with the clutch disengaged, and Fig. 4 is a longitudinal sectional view of the switch box.
5 is a front view of the gear box, FIG. 6 is a left side view of the same, and FIG. 7 is a hydraulic tilt view. Explanation of symbols (1)...Solenoid valve, (2)...Switch box, (3)...Operation lever, (4)...Top surface of boxx, (5)...Opening , (6)...lower end, (7)...disc, (8)...first spring, (
9)...Bottom of the box, QIQυ...switch,
az...Valve, 031...Shaft α4
... Cylinder, (1 sai -... Brake, OQ...
The second spring, an...clutch mechanism. Patent Applicant: Iseki Agricultural Machinery Co., Ltd. Figure 6 Figure 5 Procedural Amendment (Self-controlled December 16, 1982 2, Title of Invention: Sudden turning prevention device in production collector machine 3)
, Relationship with the case of the person making the amendment Patent applicant 4, agent address 6' Nishi-Shinjuku, Shinjuku-ku, Tokyo 160
J-Eye 7 No. 5, Date of supplementary tE command (1) Correct the drawings (Figs. 1 to 7).

Claims (1)

[Claims] In agricultural tractors and combines, which are configured to turn by disengaging the clutch in the first stage and applying the brake in the second stage, or vice versa, the operating device is A sharp turning prevention device for an agricultural machine which provides a clear difference in resistance between the first stage and the second stage to prevent the machine from entering the second stage all at once.