JPS5841805B2 - Combine harvester with alarm device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention solves the problem of abnormal rotation speed in the rotational drive system of the threshing section.
For example, there is a detection element that detects a decrease in the rotation speed of the handling cylinder or processing cylinder due to overload, a decrease in the rotation speed of the first screw, second screw, second thrower, etc. due to clogging with grains, etc. The present invention relates to a combine harvester with an alarm device having an alarm device activated based on detection.

Conventional combines have a control panel (main switch, engine starter, various Since the meter was installed on a panel configured so that the control of the aircraft could be concentrated in one place, there was a drawback that people gradually forgot to turn on the manual switch.
If you do not always follow the regular procedure of turning on the manual switch after turning on the main switch to start the engine and turning on the threshing clutch to rotate the handling drum, etc., the manual switch should be turned on first. However, if the handling cylinder or the like is in a stopped state, the detection element will also detect this and the alarm system will operate in the same way as when an abnormality occurs.

As a means to eliminate such operational inconveniences, the engaging operation of the threshing clutch is linked with a switch installed in the electric circuit, so that the alarm device is activated unless the threshing clutch is engaged and the handling drum etc. is rotated. Although it is possible to configure the threshing cylinder so that it is not ready for operation, there is generally a time delay of about 2 seconds from when the threshing clutch is engaged until it reaches the predetermined rotational speed. Therefore, when the switch is configured to be operated by the engagement of the threshing clutch as described above, the rotational speed decreases during the period from the time the threshing clutch is engaged until the handling cylinder rises to the predetermined rotational speed. This will cause a temporary warning to be issued.

The present invention aims to eliminate these inconveniences, and includes an interlocking mechanism that switches the alarm device to an operable state in conjunction with the closing operation or the closing state of the reaping latch of the reaping pretreatment device. It is characterized by:

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

FIG. 1 shows a drive system in a combine harvester, in which the output of an engine 1 is transmitted to a rotational drive system (for example, a handling cylinder, a processing cylinder, etc.) of a threshing section 4 via a reducer 2 and a threshing clutch 3. In addition, the power branched from the passive part 3' of the threshing clutch 3 is transmitted via the supply clutch 5 and the supply mission 6 to a reaped husk culm supply section (for example, a vertical feeding device for reaped husk culms).
7 and the stem portion of the shell culm supplied thereto are transmitted to a feed chain 8 which pinches and transfers the stem portion along the handling chamber.

Further, a part of the power taken out from the reduction gear 2 is transmitted to the traveling device 11 of the crawler set via the main clutch 9 and the transmission 10, and a part of the power taken out from the transmission 10 is transmitted to the reaping latch 12. A reaping pre-treatment device (a device consisting of a forced pulling device, a cutting blade, a device for scraping the stock of the cut culm, etc., is installed at the front end of the machine and is configured to be able to rise and fall relative to the machine). 13, and the reaping clutch 12 and the supply clutch 5 are appropriately connected to an interlocking system 14.
The incisions are linked via .

Reference numeral 15 denotes a detection element using centrifugal force that detects an abnormal decrease in the rotational speed of the rotational drive system of the threshing section 40. Based on the detection result by this detection element 15, both 15 are used to activate the alarm device 16.

An electric circuit is formed between the switches 16 and 16, and the turning-off of a switch 17 interposed in this electric circuit is linked to the turning-on of the reaping clutch 12, so that the switch 17 is connected to the turning-on operation or turning-on of the reaping clutch 12. The alarm device 16 is configured as an interlocking mechanism that switches the alarm device 16 to an operable state in conjunction with the state.

Interlocking of both 17 and 12 can be achieved by a structure in which a part of the operating lever (not shown) of the reaping clutch 12 comes into contact with the switch 17 by moving the operating lever (not shown) in the clutch engagement direction. Of course, it can take a concrete structure.

Figure 2 is a circuit diagram, with power supply 18, main switch 1
9. A switch 17 interlocked with the reaping clutch 12, a detection element 15, and an alarm device 16 are arranged in series.

According to the above configuration, when starting the reaping and threshing work,
After turning on the main switch 19 and starting engine 1,
The threshing clutch 3 is engaged and the rotational speed of the handling barrel is adjusted using the throttle lever.Then, the main clutch 9 and the reaping (supply) clutches 12 and 5 are engaged, and then the internal running clutch is engaged in the transmission 10 to begin work. It begins.

In this case, even if the main switch 19 is turned on or the threshing clutch 3 is turned on, the switch 17 is not connected, so
The switch 17 is connected only when the reaping clutch 12 is engaged, without the detection element 15 detecting the stoppage of rotation of the handling cylinder or the low-speed rotation until reaching a predetermined rotation speed and activating the alarm device 16. The alarm device 16 is switched to an operable state, and the alarm device 16 issues an alarm only when the rotational speed of the handling cylinder abnormally decreases in this state.

As described above, the present invention is characterized by the provision of an interlocking mechanism 17 that switches the alarm device 16 to an operable state in conjunction with the engaging operation or the engaged state of the reaping clutch 12 of the reaping pretreatment device 13. Therefore, it is possible to eliminate the need to operate the manual switch, and by eliminating the manual switch or leaving it on or off all the time, it is possible to eliminate forgetting to turn on the manual switch. The alarm device 16 will not be activated when the cylinder or the like stops or rotates at low speed until reaching a predetermined rotation speed.

Moreover, according to the present invention, since the alarm device 16 is switched to the operable state in conjunction with the reaping clutch 12, the presence of the harvested grain culm is detected and the alarm device 16 is switched to the operable state based on the detection result. Even when the reaping pre-processing device and the threshing device are stopped, as in the case of switching, if the harvested grain culms remain in these grain culm conveyance paths, the alarm device 16 may be activated incorrectly. Never.

In other words, with this configuration, if you temporarily interrupt work by turning off the main switch for lunch, etc., and there are harvested grain culms remaining in the conveyance route, you will have to turn off the main switch to restart work. If this is done, the remaining harvested grain culms may be detected, which may cause the alarm device 16 to be activated when the handling cylinder, etc. stops rotating or rotates at low speed until reaching a predetermined rotation speed. Otherwise, such malfunctions would not occur.

[Brief explanation of drawings]

The drawings illustrate an embodiment of a combine harvester with an alarm device according to the present invention, and FIG. 1 is a schematic diagram of a drive system, and FIG. 2 is a circuit diagram. 12...Reaping clutch, 13...Reaping pre-processing device, 15...Detection element, 16...
... Alarm device, 17... Interlocking mechanism.

Claims (1)

[Claims] 1. In a combine harvester having a detection element 15 that detects an abnormal decrease in rotational speed in the rotational drive system of the threshing section and an alarm device 16 that is activated when this detection element 15 detects the abnormal decrease, An interlocking mechanism 17 that switches the alarm device 16 to an operable state in conjunction with the closing operation or the closed state of the latch 12
A combine harvester equipped with an alarm device, characterized in that it is provided with a warning device.