JPS5923470Y2 - Safety device in the straw cutter section of a combine harvester - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a safety device in a part of a straw cutter of a combine harvester.

That is, a base cutter is installed below the over-type straw discharging cheno, the lower side of the part near the end of the straw discharging cheno is communicated with the base cutter through an opening, and the upper rear part of the base cutter is connected behind the straw discharging cheno. An opening/closing cover is provided on the front side of the opening/closing cover, and a sensor is provided on the front side of the opening/closing cover to operate independently by the pressing force of the straw, and an alarm switch is configured to be actuated by the operation of this sensor. The engine is configured to be able to stop only when the base cutter is fully opened and the clutch is engaged, so that if the upper part of the base cutter gets clogged with straw during work, the following straw will activate the alarm and alert the operator. In addition to giving caution, it is important not to unnecessarily discharge uncut straw to the rear of the opening/closing cover, and to remove the clogged straw or carry out maintenance inspections on the inside of the base cutter. To provide a simple structure that can be suitably implemented and has a safe structure that can stop the engine and perform safe work when the opening/closing cover is fully opened when the clutch is not disengaged.

In addition, the over-type straw removal cheno referred to in the present invention refers to a type of straw removal cheno in which a rotating straw removal cheno is placed on the upper side and a clamping rail is provided oppositely to the lower side, and the straw removal from the threshing section is transported between the two. It refers to

Next, the embodiment shown in the drawings will be described.

Fig. 1 shows a side view of the combine harvester, in which a reaping section C is installed at the front of the machine supported by crawlers 7, a threshing section B is installed behind it, and a rear cover b is installed at the rear of the threshing section B.
At the rear, there are a number of disk blades 9 on two parallel axes 8 and 8', respectively.
, 9' is fitted inside the base cutter A, and the over-type straw removal chino 1 that extends above the rear cover b is extended to the inside of the cover 10 above the straw cutter A to remove straw. A base cutter A is installed below the straw removal chest 1, and the lower side of the part near the terminal end 1a of the straw removal chest 1 is communicated through an opening 11.

In addition, a belt 14 is wound around the input pulley 13 on the two shafts 8 and 8' side of the base cutter A through the transmission pulley 12 of the machine body, and a tension pulley 15 is brought into contact with the belt 14 so that clutch operation can be performed. .

An opening 16 is provided in the rear surface of the cover 10 above the base cutter A and behind the terminal end 1a of the straw removal cheno 1, and an opening/closing cover 2 is rotatably pivoted to the upper part of the opening 16 via a hinge 17. A switch 6 is installed on the cover 10 so that the opening 16 can be opened and closed by the opening 16, and a switch 6 is installed on the cover 10, which can be operated by contact with the protrusion 18 of the opening/closing cover 2 when the opening/closing cover 2 is rotated upward by nearly 180 degrees. The upper part of the sensor 3, which is aligned inward, is attached to the hinge 1.
Between the switch 5 and the sensor 3, which are pivotally mounted so as to be rotatable around a hinge 19 near the cover 10 and fixed inside the cover 10, there is a return that allows the switch 5 to be activated when the sensor 3 is slightly rotated outward. It is constructed by interposing a spring 20.

In addition, Fig. 3 shows a circuit diagram, and 4 indicates an alarm device such as a buzzer,
21 is a battery, 22 is a clutch switch, 23 is a relay, and 24 is an electromagnetic auto stopper. When the tension pulley 15 is turned on, the switch 22 is turned on, and conversely, when the clutch is turned off, the switch 22 is turned off. When the switch 6 is turned on, the auto stopper 24 is operated by the relay 23, and the auto stopper 24 operates to close the electric system in the case of a gasoline engine and the intake system in the case of an easel engine, thereby stopping the engine. Configure it so that it can be used.

However, when working on the combine, the tension pulley 1
5 to engage the clutch, the switch 22 is also turned on, and the surface rotary blades 9, 9' are driven to rotate. On the other hand, the opening/closing cover 2 is opened in a hanging state with the sensor 3 located in front. 16 is closed and becomes a safety cover.The waste straw conveyed by the straw removal chino 1 falls from the opening 11, is cut into short pieces by the disk blade 9.9' and is discharged, but the waste straw does not form on the top of the straw cutter A. Clogged opening 1
When the straw is piled up to 1, the subsequent straw conveyed by the straw exhausting cheno 1 is transported over the clogged straw and pushes the sensor 3 and the opening/closing cover 2 backward.
As shown in the figure, when the sensor 3 and the opening/closing cover 2 move slightly around the hinges 19 and 17 and rotate slightly outward, the sensor 3 is transferred to the switch 5 via the return spring 20.
is activated, and an alarm device 4 such as a buzzer is activated to notify the operator of the condition and give caution.

Therefore, after the waste straw clogs the straw cutter A, the sensor 3 and the opening/closing cover 2 are pushed backward by the subsequent waste straw, so that the waste straw is not unnecessarily discharged without being cut.

In addition, when removing the clog or carrying out internal repair inspection, the cover 2 is fully opened from the rear upwards by nearly 180 degrees around the hinge 17, and the work is performed through the opening 16. When the protrusion 18 comes into contact with the switch 6, it is activated. According to the circuit configuration shown in FIG. In this state, when the switch 6 is activated, the auto stopper 24 is activated by the relay 23 to stop the engine, allowing work to be carried out in a safe condition.

As described above, the present invention has a straw cutter A installed below the over-type straw removal chain 1, and the terminal end 1 of the straw removal chain 1.
The lower side of the part A is connected to the straw cutter A through an opening 11, and an opening/closing cover 2 is provided behind the upper part of the straw cutter A at the rear of the straw removal chain 1. A sensor 3 that operates independently is provided, and the switch 5 of the alarm 4 is configured to be operable by the operation of the sensor 3, and the engine is activated only when the straw cutter A is clutched by fully opening the opening/closing cover 2 to the rear. Since the straw cutter A is constructed to be able to be stopped during operation, if the upper part of the straw cutter A is clogged with straw, the sensor 3 is pressed by the subsequent straw conveyed by the straw removal chain 1, which activates the switch 5 and alarm 4. This can notify the operator of the situation and prevent accidents from occurring, as well as prevent the sensor 3 from operating due to an increase in the amount of straw being conveyed by the straw removal chain 1, resulting in the phenomenon of straw clogging. Since it is activated by the pressing force of the following straw, it does not needlessly discharge the straw without cutting it, and it is also useful for removing clogged straw and inspecting the inside for repairs. When performing this operation, if the opening/closing cover 2 is fully opened without releasing the clutch of the straw cutter A, the switch 6 can be activated and the engine can be stopped, allowing safe work. have

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a side view of the combine, Fig. 2 is a side sectional view of the main parts, Fig. 3 is a circuit diagram, and Fig. 4 is a side view of the combine harvester.
FIG. 5 and FIG. 5 each show an explanatory view of the operation. 1... Straw removal chenna, A... Straw cutter, 2... Opening/closing cover 3... Sensor 4... Alarm, 5. ······switch,
6...Switch, 1a...Terminal part, 1
1...Opening.

Claims (1)

[Claims for Utility Model Registration] A base cutter A is installed below an over-type straw discharging chamber 1, and the lower side of the portion of the straw discharging chamber 1 near the terminal end 1a is communicated with the base cutter A through an opening 11. An opening/closing cover 2 is provided at the rear of the upper part of the base cutter A at the rear of the straw discharging cheno 1, and a sensor 3 is provided on the front side of the opening/closing cover 2, which is operated independently by the pressing force of the discharging straw. A straw cutter for a combine harvester, characterized in that the switch 5 of the alarm 4 is configured to be operable, and the engine can be stopped only when the clutch of the base cutter A is engaged by fully opening the opening/closing cover 2 to the rear. Safety equipment in some parts.