JPS5850821Y2 - Reaping harvester with control mechanism - Google Patents

Description

[Detailed Description of the Invention] The present invention includes, for example, a cutting height control mechanism configured to raise and lower the reaping section by on/off operation of a manual changeover switch installed in the power supply circuit, and a culm length of the reaped husk. It is equipped with multiple electrical control mechanisms, including a handling depth control mechanism that controls the insertion length of the culm into the threshing section based on the detection results, and a main switch that can turn these on and off at the same time. Regarding reaping and harvesting machines.

Generally, when performing maintenance and inspection of the cutting height control mechanism in this type of reaping/harvesting machine, the cutting section is raised to a non-reaping position via a manual changeover switch installed in the power supply circuit of the cutting height control mechanism. Although the manual changeover switch is turned off, the main switch installed in the power supply circuit remains turned on, and the operator leaves the operator's seat and monitors the operating status of the reaping section from below. In many cases, the main switch provided in the power supply circuit of the control mechanism is left turned on while maintenance and inspections are performed away from the driver's seat.

Therefore, during maintenance and inspection work, if a third party such as a child accidentally touches the control switch of the control device or turns on the switch as a mischief, the mower may be used against the operator's intention. There was a risk that the high-level control mechanism could come down unexpectedly, resulting in personal injury.

In view of the above-mentioned circumstances, the present invention has been developed by simply adding an extremely simple structure to the power supply circuit of the cutting height control mechanism, allowing the operator to perform maintenance work away from the operator's seat while the main switch is turned on. Its purpose is to ensure safety when performing inspections, etc., and in the above mentioned system, it is one of several electrical control mechanisms that are turned on and off by the main switch. Its technical feature is that a key switch is provided in the power supply circuit between a certain cutting height control mechanism and the main switch, which can freely turn on and off the circuit, and can extract the operating tool in the off position. do.

Therefore, according to the present invention, a key switch is provided in the power supply circuit of the cutting height control mechanism in addition to the main switch, so that when the main switch is turned on to drive the cutting blade, the pulling device, etc. When an operator leaves the operator's seat to perform maintenance or inspection on each part of the cutting machine, the key switch can be turned off and the cutting height control mechanism operating tool can be removed. Even if a third party accidentally enters and operates the control switch by mischief or by touching it, the cutting height control mechanism will not be unexpectedly operated downward.

Therefore, by simply adding a key switch to the structure, it is possible to securely lock the cutting height control mechanism during maintenance and inspection work, which is often performed with the main switch turned on, thereby ensuring work safety. I was able to do it.

Further, in the case where the key switch is configured to double as a manual changeover switch that is installed in the power supply circuit so as to be able to be turned on and off in order to switch the cutting height control mechanism between an active state and a non-active state. This has the advantage that the power supply circuit can be simplified and costs can be reduced.

Embodiments of the present invention will be described below based on the drawings.

Figure 1 shows a three-row reaping combine harvester. In front of the threshing device 1 mounted on the rear of the machine, there are a pulling device 2A, a planted culm raking device 2B, a clipper-type reaping device 2C, and a mowing device in a standing position. A reaping section 2 is provided, which is composed of an ear-end locking and conveying device 2D that gradually changes the posture of the husk to a fallen position and conveys it to the threshing device 1, a stock-head clamping and conveying device 2E, etc. Between the frame 2F and the machine frame 3 on which the threshing device 1 is mounted, there is provided a hydraulic cylinder 4A for raising and lowering the cutting height control mechanism 4, which controls the raising and lowering of the reaping section 2 by manual operation.

As shown in FIG. 2, the cutting height control mechanism 4
The electromagnetic valve 4B, which controls the expansion and contraction operation of the lifting hydraulic cylinder 4A, is connected to a main switch which has an on/off switching function for the electric circuit of the entire combine and an engine starting function, and whose operation key can be extracted in the off position. The solenoid valve 4B is connected to the power supply circuit between the solenoid valve 4B and the main switch 5, and the solenoid valve 4B is connected to the power supply circuit between the solenoid valve 4B and the main switch 5. A manual changeover switch 6 that can be switched to three positions including a neutral state, and a key switch 7 that can freely switch on and off the power circuit of the cutting height control mechanism 4 system and that its operation key (operation tool) 7a can be removed in the off position. is interposed.

With this, for example, when performing maintenance/inspection of the reaping section with the main switch 5 turned on, by switching the key switch 7 to the forward position and removing the feeding key 7a, it is possible to perform maintenance and inspection during the work. Even if a third party such as a child accidentally touches the manual changeover switch 6, the electromagnetic valve 4B will not be activated unexpectedly, and maintenance and inspection work can be carried out with the main switch 5 turned on. It can be done safely.

Note that the key switch 7 may also be used as the manual changeover switch 6.

Further, in this case, the output voltage from the first detector that detects the set lifting/lowering operation amount of the reaping operation lever is equal to the output voltage from the second detector that detects the actual lifting/lowering amount of the reaping frame 2F of the reaping unit 2. The cutting height is automatically controlled to the set cutting height by raising and lowering the cutting part 2 based on the cutting height position control mechanism, which is configured to automatically raise and lower the cutting part 2, or the detection result of the cutting field contact sensor. The present invention may also be applied to an automatic cutting height control mechanism that is designed to have a similar structure.

[Brief explanation of the drawing]

The drawings show an embodiment of the reaping and harvesting machine with a control mechanism according to the present invention, and FIG. 1 is an overall side view of the combine, and FIG. 2 is an electric circuit diagram of the main parts. 4... Cutting height control mechanism, 5... Main switch, 7... Key switch, 7a...
・Operation tools.

Claims (1)

[Scope of utility model registration request] A reaping/harvesting machine is equipped with a plurality of electrical control mechanisms and a main switch 5 that can turn them on and off at the same time, and one of the electrical control mechanisms is a cutting height control mechanism 4. The reaping harvester with a control mechanism is provided with a key switch 7 in the power supply circuit between the main switch 5 and the main switch 5, which can freely switch on and off the circuit and can pull out the operating tool 7a in the off position.