JPS6238513Y2 - - Google Patents

Description

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

In other words, in the straw cutter of a combine, which has a straw removal chain extending above a disk cutter installed horizontally at the rear of the machine, when the straw supplied to the straw cutter becomes clogged, it is sent back by the straw removal chain. The opening/closing cover is pushed open by the waste straw to stop the engine, creating a safe structure, and the opening/closing cover is pushed open reliably without being confused by the temporary fluctuation in the amount of waste straw. In addition to preventing malfunctions, the push-open method using straw is effective, and even if you forget to start the engine with the opening/closing cover left open, the engine will not start and the opening/closing cover will not open. The present invention is intended to provide a simple and safe structure that can be easily implemented and can be implemented suitably.

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

Fig. 1 shows a side view of a combine harvester, in which a reaping section B is installed at the front of the machine body supported by a crawler 1, and a threshing section A is installed at the rear thereof, and behind the rear cover section a of the threshing section A. A straw cutter C equipped with a disc cutter constructed by attaching a large number of disc blades 3, 3' to two shafts 2, 2' placed horizontally in parallel is installed, and the straw cutter C is installed to cut the upper part of the rear cover part a. The terminal end 4a of the straw removal chain 4 to be extended is extended to a position above the disk cutter, and a straw supply path 5 to the disk cutter is formed below the straw removal chain 4, and the straw removal chain 4 and the straw cutter are The upper part of C is covered with an upper cover 6 to provide a safety structure.

An opening is provided in a portion of the upper cover 6 that is behind the straw supply path 5 and also the rear side of the terminal end 4a of the straw removal chain 4. It is pivoted to the body and can be opened and closed freely, and has the same structure as the conventional type.

The tip of a wire 10 extending from a wire receiver 9 on the inner side of the upper cover 6 is connected to a link 11 on the inner surface of the opening/closing cover 7.
The other end of the accelerator lever 14, which is connected to the other end of the accelerator lever 14, is connected to the accelerator wire 15 which is operated by the steering side, and has the same structure as the conventional structure. The wire 10 is inserted into the hole 18 to create a connection structure with play, and the other end of the wire 10 extends from the wire receiver 19 and is connected to the link 11. A set bolt 2 is attached to the other end of the wire 10.
An engaging tool 21 that can be moved and fixed by a zero is attached, and a fixed switch 22 that can come into contact with the engaging tool 21 is connected to an alarm such as a buzzer or flasher.

Further, 23 is a rod-shaped straw removal prevention body that is attached along the side of the terminal end 4a of the straw removal chain 4,
This waste straw wrapping prevention body 23 is installed close to the opening/closing cover 7 at the rear, and prevents the straw from getting stuck between the disk blades 3 and 3' on the lower side of the straw supply path 5 to the disk cutter. A large space P is formed to collect waste straw. (See Fig. 2) During combine harvester operation, the opening/closing cover 7 is closed as shown by the solid line in Fig. 2, creating a safe structure, and the wire 10 becomes loose, as shown in Fig. 3. Governor 1
2 is in a state where it can be rotated without operating the wire 10, and by operating the accelerator wire 15, the accelerator lever 14 is rotated, and the governor 12 is rotated back and forth as shown by arrow A via the spring 13, thereby starting the engine. It can be operated at high and low speeds, and in this state, the pin 16 only reciprocates within the elongated hole 18, and the wire 10 can be operated without affecting it.

Therefore, the waste straw conveyed by the straw removal chain 4 is transferred from the lower side of the end of the straw removal chain 4 to the straw supply path 5.
It falls into the space P, is cut into pieces by the disc blades 3, 3' of the disc cutter, and is discharged downward. In this case, the amount of waste straw conveyed by the straw removal chain 4 fluctuates, but if the amount of waste straw increases temporarily, the waste straw falling from the straw supply path 5 tends to accumulate in the space P. It is then shredded by the disc blades 3, 3'. When this waste straw fills the space P and clogs the straw cutter C, the waste straw that is sent backward by the straw removal chain 4 is transferred from the terminal end 4a to the lower side of the waste straw wrapping prevention body 23, which is opened and closed. pushed out to the 7 side,
Due to the pressing force, the opening/closing cover 7 is rotated about the hinge 8 and pushed open as shown by the arrow B.
At the same time, the wire 10 is pulled by the opening/closing cover 7, and as shown in FIG. The engine can be stopped automatically.

In this case, as shown in Fig. 4, the engaging tool 21 comes into contact with the switch 22 and activates an alarm such as a buzzer, so that the operator can immediately know the status and take action if the jam occurs. can be applied.

In addition, if the opening and closing cover 7 is opened during work,
Similarly to the above, the engine is automatically stopped by pulling the wire 10.

In addition, if the opening/closing cover 7 remains open, the condition shown in FIG. 4 will occur, and if the operator unknowingly turns on the switch on the control side, the condition will be known by the activation of the alarm, and the accelerator wire 15 will be activated. Even if you try to operate it, you will not be able to operate it.

In this way, the present invention provides a straw cutter for a combine that is constructed by extending a straw removal chain above a disk cutter installed horizontally at the rear of the machine, in which the terminal end of the straw removal chain is extended to a position above the disk cutter. A straw supply path extending to the disk cutter is formed below the straw removal chain, and an opening is provided in the rear portion of the straw supply path of an upper cover that covers above the straw removal chain and the straw cutter; A cover that can be opened and closed is attached to this opening, and the engine is stopped in conjunction with the opening of the cover, and a straw wrapping prevention body that is attached to the end of the straw removal chain is installed near the rear cover. Since the straw supply channel is extended to the top and a large space is formed between it and the disk cutter on the lower side of the straw supply channel, the amount of waste straw conveyed by the straw removal chain is temporarily reduced. When the amount of waste straw increases, the waste straw that falls from the straw supply path tends to accumulate in the space and is shredded to continue cutting the waste straw. When the waste straw fills the space and becomes clogged, it is sent back by the straw removal chain. The waste straw is pushed out from the terminal end along the underside of the waste straw wrapping prevention body toward the opening/closing cover, and the pressing force pushes the opening/closing cover open and automatically stops the engine. The cover can be pushed open reliably without being confused by the temporarily fluctuating increase in the amount of waste straw, and malfunctions do not occur.Moreover, the straw wrapping prevention body extends close to the opening/closing cover. Therefore, it is possible to effectively push the straw open by the pressing force of the waste straw. Furthermore, if the opening/closing cover remains open, even if an attempt is made to start the engine, the engine cannot be started, so the structure is simple and can be conveniently implemented.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a side view of the combine harvester, Fig. 2 is a sectional side view of the main parts on the straw cutter side, Fig. 3 is a side view of the main parts on the engine side, and Fig. 4 is an explanatory diagram of the operation of FIG. 3. 4... Straw removal chain, C... Straw cutter, 4a...
...Terminal part, 5... Straw supply path, 6... Upper cover,
7... Opening/closing cover, 23... Straw wrapping prevention body, P
...Space department.

Claims (1)

[Scope of utility model registration request] In a combine straw cutter C configured by extending a straw removal chain 4 above a disk cutter installed horizontally at the rear of the machine, the terminal end 4 of the straw removal chain 4
A is extended to a position above the disc cutter to form a straw supply path 5 to the disc cutter below the straw removal chain 4, and an upper cover 6 covers above the straw removal chain 4 and the straw cutter C. The above straw supply path 5
An opening is provided in the rear portion, and an opening/closing cover 7 that can be opened and closed is attached to this opening, and the engine is stopped in conjunction with the opening of this opening/closing cover 7. The straw wrapping prevention body 23 attached to the straw wrapping prevention body 23 is extended close to the rear opening/closing cover 7, and a large space P is formed between it and the disk cutter on the lower side of the straw supply path 5. A safety cover device for a straw cutter of a combine harvester, which is characterized by: