JPS6349831Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention is an invention concerning an abnormality alarm system for large agricultural machinery such as combine harvesters, tractors, and rice transplanters.

(b) Prior Art Conventionally, in abnormality alarm devices, the tone color changes depending on the degree of detection, and a tone color that can be distinguished from others is known, as in Utility Model Publication No. 50-12302. Also, regarding the technology of announcing by voice,
The technique is publicly known as disclosed in Japanese Patent Application Laid-Open No. 49-39396.

(c) Problems that the invention aims to solve With small walking-type agricultural machinery, the operator walks along with the machine and can see the entire machine, so even if an abnormality occurs, it can be detected immediately. .

However, tractors, combine harvesters, riding rice transplanters, etc. have large bodies and the operator sits in the front seat, so it is difficult for the operator to notice any problems or abnormalities in the rear or behind the machine.

Additionally, as the number of farmers decreases, it is becoming more common for combine harvesters and tractors to be operated by one person, and in such cases, an alarm system can be used to notify the operator of abnormalities that would previously have been noticed by an assistant. We need to let them know.

Traditionally, combines have been equipped with paddy sensors that notify when the paddy bag or storage tank is full, straw exhaust sensors that notify when the straw is clogged, and handlers that notify when the handling barrel is overloaded and the rotation of the handling barrel has dropped. A torso rotation sensor, etc. was installed, but in addition to these sensors, there are various other sensors, and there are various types of alarms depending on each sensor. Warnings have also come into use.

However, since the main purpose of the voice is to make it easy to hear, the voice is low and difficult to hear when working on machines that produce a lot of vibration and noise, such as agricultural machinery, and the alarm may not be heard and ignored, and operation may continue. However, there was a problem with this, which resulted in greater damage.

On the other hand, alarms using buzzers or lamps have the disadvantage that it is difficult to determine the cause of an abnormality, and it takes time to confirm the cause, making it time-consuming to take measures to deal with the abnormality.

In order to solve both of these problems, the present invention attempts to issue a warning using both sound and lamp depending on the situation.

(d) Means for solving the problem The purpose of the present invention is as described above. Next, the configuration for achieving the purpose will be explained.

A loudspeaker 18 is provided to give specific audible warnings of abnormalities at multiple locations, a prescribed noise level c is set at which the operator has difficulty hearing the sound from the speaker 18, and a microphone 5 is provided near the operator's seat 4 for agricultural machinery. If the noise level f exceeds the specified noise level c, the buzzer 19 or warning lamp 20 issues a general alarm, the work is stopped, and the noise level f exceeds the specified noise level c.
The system is configured so that a specific alarm is issued by a speaker 18 which issues an audio alarm when the noise level falls below a specified noise level c.

(E) Embodiment The purpose and structure of the present invention are as described above. Next, the structure of the embodiment shown in the attached drawings will be explained.

FIG. 1 is an overall perspective view of the combine, and FIG. 2 is a perspective view of the control column.

The combine harvester is the noisiest agricultural machine, and in addition to the basic noise of the engine 7, it also makes the sound of the handling cylinder in the threshing device 11 when threshing, the sound of the wind sorting fan, and the straw removal. There is a lot of noise, such as the sound of processing cutters, that can dull the operator's hearing.

A combine harvester has various devices mounted on a crawler-type traveling device, and moves through a paddy field while reaping and threshing grain culms.

A weed cutting board 1 is protruded from the tip, and the root part of the grain culm is guided to a pulling device 2 after weeding by the weeding board 1.
After the lodging grain culm is raised by the raising device 2, the stock head is harvested by a reaping device and transferred to the feed chain of the threshing device 11 from the stock head conveyor and vertical conveyor.

The tip of the ear is conveyed from the raising device 2 to the iron plate at the entrance of the handling barrel of the threshing device 11 via the tip conveying device 13.

The first grains threshed and sorted by the threshing device 11 are stored in a temporary storage tank 6. 7 is the engine, 8
9 is a straw processing device, and 9 is a paddy holder.

A steering column 3 is provided in front of the operator sitting on the seat 4, and left and right steering clutch levers 14L, 14R and a reaping/threshing clutch lever 15 are provided on the steering column 3 so as to be rotatable. A main speed change lever 1 is provided on the column on the left side of the seat.
6, an auxiliary shift lever 17, etc. are provided.

The warning device of the present invention is provided at an easily visible position on the control column 3. Reference numeral 18 is a speaker that issues an audio warning, 19 is a buzzer, and 20 is an alarm lamp.

The buzzer 19 and the alarm lamp 20 are configured to sound an alarm and flash the lamp whenever an abnormality occurs in any part of the various alarm sensors, but it is not possible to determine in which part of the various alarm sensors an abnormality has occurred. Therefore, the location where the abnormality has occurred can be determined by listening to the audio from the speaker 18.

In the present invention, a microphone 5 is provided for sensing the noise level, and the microphone 5 is placed as close as possible to the position of the operator's ear so that the noise level can be measured.
It is provided above the temporary storage tank 6 after the storage tank 6.

As shown in FIG. 1, the speaker 18 may be provided near the microphone 5.

FIG. 3 is a block diagram of the alarm sensing control device of the present invention, and FIG. 4 is a drawing showing the noise level and alarm control status.

The control box 25 is housed inside the control column 3 shown in FIG. 2, and sensor signals from various parts of the combine are input to the control box 25. A noise level signal from a microphone 5 for measuring the noise level is also input.

As shown in Figure 4, a certain specified noise level c is determined, and if the noise level rises above this level, it becomes difficult to hear the sound from the speaker 18 that issues an audio warning, and if the noise level falls below this level, The specified noise level c is determined to be a level at which the operator can hear the sound.

Noise level f input from microphone 5
Compare the specified noise level c with the specified noise level c.
When the value of the noise level f is higher than the value of [period a in Fig. 4], an alarm is determined in the control box and is sent from the circuit by the buzzer 19 and the alarm lamp 20 from the time point d. Ru.

If you listen to the alarm from the buzzer 19 and alarm lamp 20 and stop running with the gear shift lever from point e, or stop the threshing device or reaping device by disengaging the threshing clutch or reaping clutch, the noise level will increase to f2.
During the period b from the time when the value of the noise level f becomes lower than the specified noise level c, the operator is specifically notified of the abnormal location instead of a voice warning.

After the operator hears this audio abnormality warning, he or she begins taking measures to deal with the abnormality. 26 is an amplifier.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, it detects the level of noise generated by the aircraft, and if the noise level exceeds a certain level, it will issue a warning with a buzzer or lamp, and if the noise level is below a certain level, it will issue an alarm with an audio signal. This system has been designed to ensure that when the noise level is high, such as during work, the buzzer 19 and warning lamp 20 are used to recognize that an abnormality has occurred, and then the work is stopped, the aircraft is stopped, and the noise is reduced. You can receive an audio warning of specific abnormalities.

This allows the occurrence of an abnormality to be known early and the work to be stopped quickly, so clogging can be stopped at an early stage before a complicated clogging situation occurs.

Second, after stopping the work, the noise level can be lowered to make it easier to hear the sound from the speaker 18, and then the specific abnormality can be confirmed, so problems can be quickly dealt with. be. This allows operators to continue working with peace of mind without having to constantly strain their ears to listen.

[Brief explanation of drawings]

Figure 1 is an overall perspective view of the combine harvester, Figure 2 is a perspective view of the control column, Figure 3 is a block diagram of the alarm detection control device of the present invention, and Figure 4 shows the noise level and alarm control status. It is a drawing. 3...Control column, 4...Seat, 5...Microphone, 18...Speaker, 19...Buzzer, 20...Warning lamp, 25...Control box, c...Specified noise level, f...Noise level.

Claims (1)

[Scope of utility model registration request] A loudspeaker 18 is provided to give specific audible warnings of abnormalities at multiple locations, a prescribed noise level c is set at which the operator has difficulty hearing the sound from the speaker 18, and a microphone 5 is provided near the operator's seat 4 for agricultural machinery. If the noise level f exceeds the specified noise level c, the buzzer 19 or warning lamp 20 issues a general alarm, the work is stopped, and the noise level f exceeds the specified noise level c.
1. A warning device for agricultural machinery, characterized in that the warning device for agricultural machinery is configured to issue a specific warning through a speaker 18 which issues an audio warning when the noise level falls below a specified noise level c.