JPS6028190Y2 - Operating device in reaper - Google Patents

Description

[Detailed description of the invention] The present invention includes a reaping latch lever that turns on and off power transmission to the reaping section by swinging the operation, and a speed change lever that can selectively switch the transmission between high and low speeds by swinging the operation. They are configured to be able to swing freely in the same direction around axes that are parallel or nearly parallel to each other. Specifically, when the gear shift lever is operated to the high speed side, the reaping latch lever 4 is restricted from being engaged. The present invention also relates to an operating device for a reaper that includes a mutual check mechanism that restricts the switching operation of the speed change lever from the low speed side to the high speed side when the reaping latch lever is engaged.

Conventionally, one check member of the above-mentioned mutual check mechanism was a single check member linearly interposed between the two levers, as shown in Japanese Utility Model Application Publication No. 51-8854N, for example. However, in this case, the blocking force of the lever required for mutual check is relatively small, so when the gear shift lever is operated to the high speed side, it is easy to mistakenly use the reaping latch lever. If you force the reaping latch lever to engage, or if you force the gear shift lever to the high speed side while the reaping latch lever is engaged, the reaping latch lever may accidentally engage the clutch when driving on a highway. The reaping section may operate unexpectedly against the operator's will due to being operated by the operator, or the gear shift lever may be unexpectedly switched to the high speed side during reaping and harvesting operations at low speeds, contrary to the operator's intention. There was a high possibility that the aircraft would suddenly take off at high speed, creating a dangerous situation.

In view of the above-mentioned circumstances, the present invention ensures and strengthens the intended mutual check mechanism using the mutual check mechanism, and prevents unexpected operation of the reaping section when driving on a highway or sudden movement of the machine during low-speed reaping and harvesting work. The system is designed to ensure that dangerous situations such as high-speed starts can be avoided.

First, an embodiment of the present invention will be described based on the drawings.

Figure 1 shows a combine harvester. In front of the threshing device 1 mounted on the rear of the machine, there is a pulling device 2A, a clipper-type reaping device 2B, and a gradual change in the posture of the husk that has been cut in a standing position to a horizontal position. At the same time, a reaping section 2 consisting of a vertical conveyance device 20 etc. for conveying and supplying to the threshing device 1 is arranged, and the reaping section 2 is constructed on the horizontal side of the main section of the reaping section opposite to the side where the threshing feed chain 1A is present. The control section 3 includes a reaping latch lever 4 that turns on/off power transmission to the reaping section P1 and P2 by swinging the operation, and a reaping latch lever 4 that is interposed between a traveling mission case 6 that controls the drive of the crawler traveling device 5 and an engine 7. The main gear shift lever 9 is capable of switching the hydraulic continuously variable transmission 8 between forward, neutral, and reverse states. By operating the oscillation at , the transmission device (not shown) built in the traveling transmission case 6 is set to low/medium speed suitable for reaping work.■1. The vehicle is provided with an auxiliary shift lever 10 that can be selectively switched to V2, (3) suitable for road driving, and neutral N, N2.

The reaping latch lever 4 and the sub-shift lever 10
When the sub-shift lever 10 is operated to the high speed V3 side, the swinging operation of the reaping latch lever 4 to the clutch engagement position P is restricted, and the reaping latch lever 4 is not operated to engage. When the gear shift lever 10 is
The mutual check mechanism for controlling the switching operation to the high speed V3 side is constructed as shown in FIGS. 2 and 3.

That is, near the swing fulcrum shaft 12 of the reaping latch lever 4,
A fixed shaft 14 that is parallel or substantially parallel to the swing fulcrum shaft 12 and the swing fulcrum shaft 13 of the sub-shift lever 10 is installed, and on this fixed shaft 14, the swing axis 6 of the sub-shift lever 10 is attached. A substantially single-shaped check member 16 is provided which moves in conjunction with the rod 15 during the switching operation, and the check member 16
In this case, when the sub-shift lever 10 is operated to the high speed side (3), the restraining protrusion 17 protruding from the reaping latch lever 4 comes into contact with the reaping latch lever 4 from the direction of its swinging force, and the lever 4 When the reaping latch lever 4 is being operated, the fixed shaft 14 axis of the restraining member 16 is aligned with respect to the restraining protrusion 17 (see FIG. 2). It makes contact from the direction of swing around C to check the switching operation of the sub-shift lever 10 to the high-speed V3 side (
(see FIG. 3). A second regulating member 19 is provided.

Further, a second fixed shaft 20 is installed near the swing fulcrum shaft 12 of the reaping latch lever 4 in parallel or almost parallel thereto.
A clutch actuation arm 22 is interlocked with a reaping latch (not shown) via an operation wheel 21, and a transmission actuation arm 24 is interlocked with a transmission (not shown) via a connecting rod 23. The auxiliary shift lever 10 and the shift operating arm 24 are connected via an operating rod 25,
Further, the swinging base end of the reaping latch lever 4 is capable of swinging the clutch actuating arm 22 toward the clutch disengaging side against the elastic biasing force when the reaping latch lever 4 is operated to cut. A cam 26 is formed.

In summary, the operating device for the reaper according to the present invention is as follows:
A reaping latch lever 4 that turns on and off power transmission to the reaping section 2 by operating swinging, and a transmission device being operated and swinging around an axis 6 that is parallel or almost parallel to the swinging axis a of the reaping latch lever 4. When the shift lever 10 is operated to the high speed side, the reaping latch lever 49 is connected to the shift lever 10 that can be selectively switched between high speed and low speed.
A mutual check mechanism 11 is configured to contact and restrict the switching operation of the gear shift lever 10 to the high speed side when the reaping latch lever 4 is engaged. A restraining member 1 that swings around an axis C that is parallel or nearly parallel to the lever swing axis in conjunction with the operation.
6 is provided, and this check member 16 is provided with the shift lever 10.
a first regulating member that comes into contact with a restraining protrusion 17 protruding from the reaping latch lever 4 from the direction of the swinging force of the reaping latch lever 4 when the reaping latch lever 4 is operated to the high speed side, and restrains the input operation of the lever 4; 18, when the reaping latch lever 4 is engaged, the check member 16 comes into contact with the check protrusion 17 from the swinging direction to check the switching operation of the shift lever 10 to the high speed side. Since the second regulating member 19 is provided, even if the reaping latch lever 4 is accidentally turned on while the gear shift lever 10 is being operated to the high speed side, Since the restraining protrusion 17 of the reaping latch lever 4 and the first regulating member 18 of the restraining member 16 come into contact from the direction of the swinging force of the reaping latch lever 4, no force is generated in the direction of switching the speed change lever 10 to the low speed side. , or because it is very small, the restraining protrusion 1
7 and the first regulating member 18, the closing operation of the reaping latch lever 4 can be reliably and strongly prevented.

Further, even if the speed change lever 10 is accidentally switched to the high speed side while the reaping latch lever 4 is engaged, the second regulating member 19 of the restraining member 16 and the restraining protrusion of the reaping latch lever 4 17 comes into contact with the restraining member 16 from the swinging direction, so the force in the direction of switching the reaping latch lever 4 to the entry side is not generated or is very small, so the second regulating member 19 and restraining protrusion 1
This shift lever 1 is
0 switching operation to the high speed side can be reliably and strongly prevented.

Therefore, the mutual traction function constructed between the reaping latch lever 4 and the speed change lever 10, as well as the intended mutual traction function, can be reliably and strongly exerted, and the unexpected operation of the reaping section 2 can be avoided when traveling on a highway. Alternatively, it has become possible to reliably avoid the occurrence of dangerous situations such as sudden high-speed start-up of the machine during low-speed reaping and harvesting work.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the operating device in the reaper according to the present invention, and FIG. 1 is an overall side view of the combine, and FIGS. 2 and 3 are enlarged partially cutaway side views of the main parts and their working diagrams. It is. 2... Reaping section, 4... Reaping latch lever 10... Speed change lever, 11...
Mutual checking mechanism, 16... Checking member, 17...
... Checking protrusion, 18 ... First regulating member, 19
...Second regulating member, a, d, c...Axis core.

Claims (1)

[Scope of utility model registration request] A reaping latch lever 4 that turns power transmission to the reaping unit on and off by operating swinging, and a transmission device that operates and swinging around an axis 6 that is parallel or nearly parallel to the swinging axis a of the reaping latch lever 4. When the shift lever 10 is operated to the high speed side, the reaping latch lever 4
The reaping latch lever 4
When the shift lever 10 is engaged and operated, the mutual check device 11 that contacts and restricts the switching operation of the shift lever 10 to the high speed side is configured. A check member 16 that swings around a parallel axis 0 is provided, and the check member 16 has a check protrusion 17 that projects from the reaping latch lever 4 when the shift lever 10 is operated to the high speed side. a first regulating member 18 that comes into contact with the reaping latch lever 4 from the swinging direction to check the engagement operation of the lever 4; The shift lever 1 is brought into contact with the restraining member 16 from the swinging direction.
1. An operating device for a reaper, characterized in that a second regulating member 19 is provided to check switching operation to a high speed side.