JPS5921620Y2 - Safety cover device for straw cutter of combine harvester - 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 a combine straw cutter that is constructed by installing an opening/closing cover at the rear end of the straw removal cheno at the upper rear part of the straw cutter installed at the rear of the machine, the upper part of the straw cutter is clogged with straw and the straw is removed. When the waste straw is pushed out by the cheno, the opening/closing cover can be opened slightly, and as the overflow occurs, an alarm is activated to notify the operator and warn the operator. To provide a safe and good safety cover structure which can be suitably carried out by making it impossible to remove the straw that is clogged with a wide opening unless the engine is stopped.

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

Figure 1 shows a side view of the combine harvester, with a reaping section B at the front of the machine body supported by a crawler 1, and a threshing section A at the rear.
At the rear of the rear cover part a of the threshing section A, there is a straw cutter 〇 equipped with a cutter consisting of a large number of disc blades 3, 3' attached to two parallel shafts 2, 2'. The terminal end 4a of the straw removal chenna 4 installed and extending above the rear cover part a is shown above the receiving opening 5 of the upper part of the base cutter C, and the straw removal cheno 4 is connected above the straw cutter 〇 and Upper cover 6
The material is covered with a safety structure.

An opening is provided in the rear part of the upper cover 6 at the upper rear part of the straw cutter C and behind the terminal end 4a of the straw removal cheno 4,
The upper part of the opening/closing cover 7 which can open and close the opening is pivotally attached by a hinge 8 so as to be rotatable, and is constructed similarly to the conventional type.

An operating sensor 9 connected to an alarm such as a buzzer (not shown) is installed on the inner side of the upper cover 6, and the hinge 8 is integrated with the rotational axis of the opening/closing cover 7. A cam 10 is installed, and when the opening/closing cover 7 is slightly opened from the closed state, the cam 10 rotates and comes into contact with the sensor 9 to activate the alarm.

Further, a hook-shaped lock body 11 is provided on the inner side of the upper cover 6 so as to be rotatable around a support shaft 12.
A tension spring 13 from above is connected to the extending portion 11 a on the opposite side of the opening/closing cover 7 , and a hook rod 14 is provided on the inside near the hinge 8 of the opening/closing cover 7 so as to protrude toward the lock body 11 . The opening/closing cover 7 engages with the rod body 11 from the closed state to the slightly open state to prevent it from opening any further from this slightly open state, while the engine (not shown) One end of the speed regulating lever 15 on the side and the accelerator lever 16 on the control side are connected by an accelerator wire 17, and the central operating shaft 1 of the speed regulating lever 15 is
8 is interposed with a screw spring 19 so as to bias the speed regulating lever 15 in the low speed direction opposite to the accelerator wire 17 side, and an operating wire 20 connected to the other end of the speed regulating lever 15 is connected to the spring 19. The lock body 1 is removed from the nearby wire receiver 21.
1, and the end of the sweeping wire 20 extending from the wire receiver 22 below is connected to the extending portion 11a of the lock body 11.

During work, the straw carried out by the ejecting chino 4 falls downward at the terminal end 4a, is cut by the disk blades 3, 3', and is ejected. In the closed state, the cam 10 is connected to the sensor 9
At the same time as the accelerator lever 16 is moved to the high speed position A as shown in FIG. The tension spring 13 pulls against the loose operation wire 20, pushing the lock body 11 downward as shown in FIG. become a state.

In this state, if the upper part of the straw cutter C is clogged with straw, the following straw will be pushed by the straw removal chenna 4 and the opening/closing cover 7 will be pushed slightly as shown in the imaginary line in Fig. 2 and in Fig. 5. Even in this state, as shown in Fig. 5, the catch rod 14 gets caught on the lock body 11 and does not open any further, and the waste straw overflows from this slightly opened part, and at the same time, The cam 10, which rotates together with the opening/closing cover 7 that opens, contacts the sensor 9 and activates an alarm such as a buzzer to alert the operator.

Therefore, when the accelerator lever 16 is rotated to the stop position, the tension of the torsion spring 19 is applied to the speed regulating lever 19.
rotates as shown by the imaginary line in FIG. 4, and the engine stops. In this state, the operating wire 20 is pulled, and the rod body is pulled as shown in FIG. 6 while tensioning the tension spring 13. 11 is rotated upward, the engagement with the hook rod 14 is released, and the opening/closing cover 7 can be opened wide, allowing the removal of the clogged straw to be carried out in a safe condition. can.

In this way, the present invention utilizes a straw cutter C installed at the rear of the aircraft.
In a combine straw cutter configured by installing an opening/closing cover 7 at the rear of the upper end of the straw discharging chenna 4, when the opening/closing cover 7 is slightly pushed open to cause the straw to overflow, the opening occurs. The sensor 9 that activates the alarm in conjunction with the opening/closing cover 7 engages with the side part of the opening/closing cover 7 until the opening/closing cover 7 is opened slightly from the closed state, and prevents the opening/closing cover 7 from being opened further. lock body 11
Since the lock body 11 is released from the locked state in conjunction with the engine stop operation, the safety cover device for the straw cutter of the combine harvester is designed to prevent the upper part of the straw cutter from being clogged with waste straw. When the waste straw is pushed out by the straw cheno, the opening/closing cover is slightly pushed open while being engaged by the locking body, preventing overflow and expanding the clogging phenomenon, and the slight rotation of the opening/closing cover activates the sensor. By alerting the operator with an alarm and stopping the engine, the locking state by the lock body can be released and the opening/closing cover can be opened wide to safely handle the problem.
It has a good safety cover structure and features that can be suitably implemented.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of a combine harvester, Fig. 2 is a sectional view of a part of the straw cutter, Fig. 3 is a similar sectional view, and Fig. 4 is an explanatory diagram of the engine operating section. 5 and 6 show explanatory diagrams of the operation of FIG. 3. C...Straw cutter, 4...Straw removal cheno, 7...Opening/closing cover, 9...Sensor, 11...Lock body.

Claims (1)

[Scope of Claim for Utility Model Registration] A straw cutter for a combine harvester configured by installing an opening/closing cover 7 at the rear end of a straw removal chenna 4 at the upper rear part of a straw cutter C installed at the rear of the machine, A sensor 9 activates an alarm in conjunction with the opening when the opening/closing cover 7 is slightly pushed open in an overflow state, and a sensor 9 that operates the opening/closing cover 7 from the closed state to the time when the upper part is slightly opened. A combine harvester comprising: a locking body 11 that engages with a side portion of the chamber opening/closing cover 7 to prevent it from being opened any further; and a configuration in which the locking state of this locking body 11 is released in conjunction with an engine stop operation. safety cover device in the straw cutter.