JPH06316228A - Monitor device of tractor - Google Patents

Abstract

PURPOSE:To enhance the easiness in maneuvering by an operator by arranging so that displaying of the engine speed, etc., and the display and operating part of horizontal control are positioned in one place. CONSTITUTION:A liquid crystal display part 13 and a horizontal control operating part 14 are furnished in a monitor device 12. The engine speed, car speed, etc., are displayed in the liquid crystal display part 13, and also the setting information for horizontal control and the failure information are to be displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitor device for displaying engine speed, PTO speed, etc. of a tractor.

[0002]

2. Description of the Related Art It is known that a tractor is equipped with a monitor device to display the number of revolutions of the engine, the vehicle speed, etc. on a liquid crystal display.

[0003]

The conventional monitor device of this type only displays the engine speed, the PTO speed, and the vehicle speed. Therefore, the horizontal control of the ground work machine such as the rotary is performed by the operation panel provided separately. Since each operation unit and display unit are provided at separate locations,
The operability was poor for the operator.

Therefore, there is a technical problem to be solved in order to improve the operability of the operator by making the display of the engine speed and the like and the display of the horizontal control and the operation unit one place, and the present invention is realized. Aims to solve this problem.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in order to achieve the above object, and is provided with a liquid crystal display section and an operation section for horizontal control and the like, and engine speed, PTO speed, vehicle speed It is intended to provide a tractor monitor device which is configured to display the horizontal control setting information and the abnormality information on the liquid crystal display while displaying the same on the liquid crystal display.

[0006]

In the monitor device of the present invention, the liquid crystal display section and the operation section are integrally provided. The horizontal control is set by the operation unit, and the horizontal control setting information and abnormality information are displayed on the liquid crystal display unit. In addition to horizontal control information, the liquid crystal display also displays engine speed, PTO speed, vehicle speed, and the like.

[0007]

An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows the inside of the cabin of the tractor, and the monitor device 12 is installed at a position on the side of the seat 11 where the operator can easily operate. The monitor device 1 shown in FIG.
2 shows the panel surface and the connection state of each sensor. A liquid crystal display unit 13 and an operation unit 14 for horizontal control and the like are provided on the panel surface of the monitor device 12, and normally the liquid crystal display unit 1 is provided.
In 3, the engine speed, PTO speed, vehicle speed, etc. are displayed.

The operation unit 14 is provided with a horizontal control changeover switch 15, a horizontal control manual switch 16, a tilt adjustment switch 17, a PTO high-speed / low-speed changeover switch 18, and a draft / depth changeover switch 19, and other checks are made. A switch 20, a reset switch 21, and a buzzer 22 are provided. Before using the monitor device 12, if the check switch 20 is first pushed and locked, the detection value of each sensor is displayed on the liquid crystal display unit, and it can be checked whether or not each automatic control is normally performed. When the check switch 20 is locked, each switch of the operation unit 14 is inoperable, and a buzzer sound informs that it cannot be changed. During the check, each automatic control stops its operation, so the check work is performed by stopping the machine.

Next, the operation of the horizontal control will be described. The horizontal control changeover switch 15 is operated to either "automatic", "parallel" or "manual". Horizontal automatic control is performed in the "auto" position. In the "parallel" position, the ground work implement is controlled to be parallel to the tractor body. "manual"
When the manual switch 16 for horizontal control is operated to the right or left in the position, the attitude of the ground work machine changes according to the operation amount.

When the grip of the manual switch 16 is released,
Although the manual switch 16 is returned to the neutral position by the action of the spring, the posture of the ground work machine adjusted by then is maintained as it is. The neutral position of the ground work machine can be corrected in advance by the tilt adjustment switch 17. The horizontal control setting information and the current detection value of each sensor can be displayed on the liquid crystal display unit 13 at any time. When the lift arm potentiometer, the parallel link stroke sensor, the slope sensor, or the like fails, which sensor is detected? It is formed so that the operator can confirm the abnormal state by displaying on the liquid crystal display section 13 whether or not there is a failure.

[0011] For example, when the vehicle body approaches the tipping angle based on the detection value of the slope sensor, it is displayed on the liquid crystal display unit 13 that there is a danger, and the buzzer 22 is sounded to inform the operator of the danger. The abnormality information of the horizontal control described above instantly displays the danger on the normal display screen by the interruption operation. The interrupt screen displayed on the liquid crystal display unit 13 can be restored to a normal display screen by pressing the reset switch 21.

FIG. 3 shows a draft / depth switching switch 1
9 shows a circuit, in which the right draft sensor, the left draft sensor, and the depth sensor are connected to the CPU by connectors 23, 23 ... The changeover switch 19 and each sensor are connected by a relay circuit 24. When the changeover switch 19 is located on the draft side, the relay 25 does not operate, and the relay contacts 26 and 27 have left and right draft sensors as shown in the drawing. It is conducting to the side. Therefore, draft control by the draft sensor is performed.

Here, when the selector switch 19 is switched to the depth side, the relay 25 operates and the relay contact 2
6, 27 conduct to the depth sensor side. Therefore, the depth control is performed by the depth sensor. As shown in FIG. 2, the transmission control unit is provided with two speed sensors so that the rotation speed of the PTO and the vehicle speed of the aircraft can be detected and constantly displayed on the liquid crystal display unit 13. Since the PTO has only one speed sensor, the changeover switch 18 switches between two modes of high speed (H) and low speed (L).

Therefore, the present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified one.

[0015]

According to the present invention, as described in detail in the above-mentioned one embodiment, the display of the engine speed and the like and the display of the horizontal control and the operation portion are provided in one place, so that the operability of the operator is remarkably improved. . Further, the monitor device can promptly inform the operator of abnormality information of the horizontal control, which contributes to improvement of safety.

[Brief description of drawings]

FIG. 1 is a perspective view showing the inside of a tractor cabin.

FIG. 2 is an explanatory diagram showing a connection state between a panel surface of the monitor device and each sensor.

FIG. 3 is a circuit diagram of a draft / depth switching switch.

[Explanation of symbols]

 12 monitor device 13 liquid crystal display unit 14 operation unit

Claims (1)

[Claims] 1. A liquid crystal display unit and an operation unit for horizontal control and the like are provided to display engine speed, PTO speed, vehicle speed and the like on the liquid crystal display unit, and horizontal control setting information and abnormality information are displayed. A tractor monitor device characterized by being formed to display on a liquid crystal display.