JPS5938108A - Working vehicle - Google Patents

Abstract

PURPOSE:To simlify the structure of an attitude controller for a working vehicle equipped vertically-movable moving units, by providing an operation mode selecting means to select either the vertical motion of the single moving unit or the exclusive vertical motion of all the moving units. CONSTITUTION:A switch 13 is provided at the lower part of an operting lever 11 for the vertical motion of a reaping section so that a contact 13a or 13b can be turned on by the selective operation of the lever 11. When the contacts 13a, 13b are open and rolling sensor contacts 10a, 10b are exclusively open or closed, a first control circuit is composed of a battery 14, gates 18a, 18b, diodes 19 and transistors 20 to exclusively drive all the cylinders of moving units. When the switch 13 is turned on by the lever 11, a second control circuit is composed to drive the single cylinder. According to this constitution, the structure of a controller is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a working vehicle in which the left and right traveling devices are mounted on the machine body so that they can be driven up and down separately. □ The purpose of this is to simplify the structure of a control device that corrects the posture within a flat or set angle. There are four operating tools for selecting an operation mode: an independent lifting and lowering operation of only one of the traveling devices, and an integrated and contradictory lifting and lowering operation of both traveling devices.

The effects of the characteristic configuration of the present invention are as follows. □
In other words, when correcting the rolling of the aircraft,
There is a binary method, which corrects the rolling by driving only one of the running gears up and down depending on the cause of the rolling.This method does not change the height of the aircraft above the ground. Although it has this advantage, it has the disadvantage of slow response speed. The other method is to correct the rolling by driving the left and right running gears opposite to each other, regardless of the cause of the rolling.While this method has a fast response time, it also changes the height of the aircraft above the ground. There is a drawback. On the other hand, the operator of the work vehicle can easily recognize the cause of the machine's rolling, the rolling state, etc. based on the sensation caused by the vehicle's body rocking and other visual sensations, and select the above two rolling correction methods. From an ergonomic point of view, it is possible to manually select an operation mode by providing an operation tool for selecting an operation mode. There is no need for a control device equipped with sensors to detect causes and conditions or various judgment functions, and the overall control device can be made very simple, reducing manufacturing costs. We were able to reduce the failure rate.

Next, examples will be described.

There is a handle at the front of the threshing machine (3) opposite the feed chain (4). i t22i, the driving part (5) equipped with the driver's seat (opener, control lever (9)) is installed 6 times, and the threshing machine (3)
The combine harvester is equipped with a reaping part (6) at the front of the combine harvester, and has a total of 41° and 4 parts for reaping and threshing the planted culms.

The crawler traveling device (1g), (lb) is attached to the aircraft 12+
It can be raised and lowered freely by driving left and right cylinders (7a) and (7b) via link machines (8m) and (8b), and a rolling detection system installed inside the fuselage (2). Each traveling device i based on the signal from the sensor (101)
7? (la) and (lb) are configured to perform lifting/lowering control.

9'? As shown in Figure 8, the sensor (10) that detects rolling uses a mercury switch to
) is horizontal and still within the rolling angle setting range, both contacts (10a) and (10
b) is in the closed state, and when the body (2) is in the rolling state, the contacts (10a)f or (10b) are configured to open alternatively, and furthermore, as shown in FIG. (6)
The operating lever for raising and lowering the reaping section (6) provided at
(alternatively activates the l field, its contact point (18g) or
(lllb) to close the operation lever (1
The contacts (18a) and (18b) are configured to open when 1) is not operated, and these contacts (10a), (10b), (18a), (18
b) and battery 04), gate circuits (18a) and (18b) forming the logic circuit, diode α..., transistor (201...), pilot lamp (21a)
, (21b) - (21c), (21d), Solenoid coils (16a), (16b) of the separate electromagnetic valves (15a), (15b) that control expansion and contraction of the left and right cylinders (7a), (7b), respectively. , (16c), (16
d) and solenoid coils (16a), (16c
) by energizing the cylinders (7a) and (7b).
Extend, solenoid carp / I / (16b), (16d
) to energize cylinders (7a) and (7b) from K.
When the machine t rolls, the contacts (18m), (18b) are open when the operating lever (111) is in the neutral state, and the contacts (10a),
If (10b) is not opened or closed in a contradictory manner, a first control device that performs integral and contradictory lifting and lowering operations of the left and right traveling devices (la) and (lb), and a contact point by operating the operating lever 1Ill. (18a) or the contact (18b) is closed, and the contact (18b) is closed.
10a) and (10b) open or close contrary to each other 9. Select one of the left and right traveling devices (la) and (lb), and switch the first control device that performs the independent lifting operation fY to the circuit. Furthermore, when the aircraft is within the rolling angle setting range, the contact (18a) or the contact (18b) is closed by operating the second operating lever (Iil), and the contacts (10a) and (10b) are also closed. And the running gear rat
(la).

(1b) is configured so that it can be raised and lowered integrally to adjust the height of the aircraft.

In addition, as shown in FIG. 7, the pilot lamp (21a),
(21b), (21c), (21d) in the above operations 8'l:
Placed at N E [7, Notifies the lowering state of the traveling gear (la), (lb), instructs the transition from individual lowering operation to integrated lifting operation, etc. The system is configured to notify the driver of the timing of the event.

In addition, when the operation lever (11) is configured as the control tower C (z), as shown in FIG. (The operation lever can be slid freely in the vertical axis direction of 24+ (
11) is inserted into the guide hole (251'k, bracket 04) drilled in the sliding regulating bin (251'k, bracket 04) protruding from the operating lever (11) to regulate the sliding range, Operation lever (flange fitted externally to the river (261 and platen)
A spring fin is arranged between the operating lever (24) so as to bias the operating lever (11 upward), and a rod is provided protruding from the lower end of the operating lever (11), and a pivot shaft ( A part that fits into the U-shaped cane groove 01) of the operating bar 4 and operates the pulp of the cylinder that moves up and down the reaping part (61). ,or,
By pressing and operating the operating lever (11), the lever (
291 from the groove C11l and switch t+3].

(By operating 1□□□, it can be switched to i! and
It is configured so that it can be operated by switching between an up/down operation, a single four-down operation, and a mode selection operation that selects a reverse up/down operation.

1) j1 Traveling device (la), (lb) fK: When there are several driving devices that can be moved up and down independently on the aircraft, for example, the engine output drives the link mechanism, the rack/binion lifting mechanism, etc. It may be configured to
In addition, the sensor (10) can be of various types, such as an angle detector using a potentiometer, and furthermore, in configuring the first control device and the second control device, the sensor (10) can be used for the various input/output The specific configuration of the circuit can be freely changed depending on the electrical and mechanical characteristics of the device.

1. When correcting the aircraft attitude, determine the angle JE at which the attitude correction starts and stops depending on the road conditions, loading, and object conditions.
may be set not only to the horizontal state but also to various values, and the range of these settings is collectively referred to as the low link angle setting range.

The present invention is applicable to, for example, a working vehicle equipped with a traveling device that drives wheels, various agricultural vehicles such as a transportation yet, a reaping section, a rice transplanter, etc., and an earthwork vehicle equipped with various other traveling devices. .

[Brief explanation of drawings]

The drawings show an embodiment of the working vehicle according to the present invention, and FIG.
Figure 2 is a schematic rear view of the engine, Figure 8 is an enlarged view of the sensor, Figure 4 is a perspective view of the main parts, Figure 5 is the circuit that constitutes the first control device and the second control device. 6 is a system diagram of the main parts, and FIG. 7 is a plan view of the main parts. (la), (lb)...travelling device, (2)...
...Aircraft, (lO)...Sensor, (River)
・・・・Operation tool/manual instruction device, -eye 4F

Claims (1)

[Scope of Claims] ■ A work vehicle in which left and right traveling devices (la) and (lb) are respectively attached to a body (2) so that they can be driven up and down, wherein both traveling devices (1@), (lb), and both traveling devices (la), (
A work vehicle characterized in that it is provided with an operation mode selection operation tool O1l' for selecting the integral and contradictory lifting and lowering operations of lb). ■ Sensor that detects rolling of the aircraft (2)
Based on the information from +101, in order to maintain the rolling angle of the aircraft within a predetermined range, both traveling devices (la)
, (lb) are provided, and the rolling angle of the aircraft (2) is kept within a set range based on information from the sensor (lO). In order to maintain the traveling devices (la), (lb
), and the first control device thereof, the information as to which of the traveling gears M, (la) and (lb) should be operated up and down, and an instruction to start the operation are provided. The work vehicle according to claim 0, characterized in that it is provided with a human instruction device (11).