JPS5936509Y2 - Tractor load control mechanism operation display device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an operation display device for a load control mechanism of an L-rafter.

In this invention, when the load control switch is turned ON after the gear shift lever is positioned at a constant speed, the load control mechanism is applied to a tractor that has a tractor load control mechanism that automatically changes the speed depending on engine load fluctuations. Displays various indications accompanying the operation of the mechanism, such as a no-reverse lamp to prevent the danger of reverse tillage, and an AUTO-MANU lamp to indicate whether load control is being performed automatically or in manual mode. By using the display mounted on the hood of the tractor, the display is easy to see and work safety is ensured.Also, even if the tractor model is different, it can be easily installed by simply installing it on the hood of the tractor. The present invention aims to provide a mechanism operation display device.

To explain the embodiment of this invention in detail based on the drawings, A is a tractor, and an engine 1 is mounted on the front part.The upper surface of the front part over the engine part is covered with a bonnet 2. is equipped with 3 cockpits.

4 is a wheel, and 5 is a handle.

The tractor A is equipped with a load control device, and the load control device is a multi-gear transmission type in order to increase the number of forward and reverse gears in the tractor transmission equipped with a hydraulic clutch type transmission device. It has an auxiliary transmission mechanism, and when a load is generated on the rotary device C, which is connected to the rear of tractor A and transmits power, the speed is appropriately reduced by the same transmission, and the load is even larger. When this occurs, the sub-transmission mechanism is configured to further reduce the speed.

Then, when these gear-shifting sub-transmission mechanisms cannot automatically change the speed stage, an instruction signal is issued to change the sub-transmission according to fluctuations in rotational speed, and automatic load control is also widely used. It is divided into an operation section, a display section, a control circuit section, and a power shift drive section.In particular, display section B includes a backing prohibition lamp 6 to prevent the danger of backing up, and the current load. AUTO-MANU lamp 7 indicating whether control is being performed automatically or in manual state;
Sub-shift UP-DOWN to instruct the sub-shift to rise or fall
It consists of an indicator lamp 8 and a PS gear position indicator lamp 9 that indicates the current speed stage during automatic load control.

Here, the sub-shift UP-DOWN instruction lamp 8 flashes in the sub-shift operation display circuit when a shift is required for the sub-shift stage number, and the PS gear position indicator lamp 9 blinks when the sub-shift is required to change gears. When the gear position is shifted to one of the gears, the shift position detection is activated and the lamp is turned on.

In this way, the display section B functions as an instruction lamp for automatic control over a wide range beyond the sub-shift, and is displayed by a fixed display 10.

The display device 10 is placed on the hood 2 of the tractor A with the display surface facing toward the driver's seat 3, and is configured to be attached to the existing bonnet 2 with fixing fittings such as bolts. .

According to this invention, the display device that indicates the operation of the load control device is mounted on the bonnet.
It is easier for the operator to see than on the dash board, and since it is on the bonnet, the display surface comes into the field of view while watching the progress of the field, so it is possible to clearly understand the display while working, and it also Since it can be mounted on the top, it has the effect of being able to be mounted regardless of the tractor model.

[Brief explanation of the drawing]

Figure 1 is a side view of the proposed device, Figure 2 is a plan view of the main parts,
FIG. 3 is a front view of the display device in the present device. A: Tractor, B: Display, 1: Engine, 2: Bonnet, 3: Pilot's seat, 4: Wheels, 5: Handle, 6: Prohibition lamp, 7: AUTO-MANU lamp, 8: UP
-DOWN indicator lamp, 9:PS gear position indicator lamp,
10: Display device.

Claims (1)

[Scope of utility model registration request] A load control device that detects fluctuations in the rotational speed of the engine 1 with a sensor and automatically adjusts the traveling speed of engines 1 to A in accordance with the rotational speed, and also automatically raises and lowers the traveling speed stage. An operation display device for a load control mechanism of a tractor, characterized in that the operation display is configured to be displayed on a display 10 separately provided on the hood 2 of a tractor A.