JPH0221902Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides maintenance and inspection for the first and second material transport mechanisms, such as the first screw and second screw, when a jam occurs at the end of the transport. In order to facilitate operation in a wide space by displacing the grain tank, a grain tank is provided adjacent to the threshing device and can be freely displaced between a position adjacent to the threshing device and a position distant from the threshing device. This invention relates to the structure of a clutch for a combine harvester with a grain tank equipped with a discharge device.

In the above-mentioned devices, the first article conveying mechanism, the second article conveying mechanism, and the discharge device are generally connected to the engine through a series of transmission systems, and the first article conveying mechanism and the second article conveying mechanism are connected to the engine through a series of transmission systems. As the mechanism becomes clogged, the discharge device becomes unable to drive, and if a large amount of grain is stored in the grain tank at the time of the clog, the grain tank cannot be discharged, so a large amount of force is required to displace the grain tank. It takes
The problem was that it took a long time to clear the clog.

In view of the above-mentioned points, the present invention has been developed to allow easy work to eliminate clogging in the first grain transport mechanism and the second grain transport mechanism, regardless of the state of grain storage in the grain tank, and to It is an object of the present invention to simplify the structure and facilitate the clutch engaging operation associated therewith.

In order to achieve the above object, the present invention has the structure of the clutch of the combine harvester with a grain tank described above, in which the first material transport mechanism, the second material transport mechanism and the engine in the threshing device are connected to the discharge device. The first transmission system is interlocked and connected via a second transmission system that is separate from the first transmission system, and the second transmission system is provided with a belt-type transmission mechanism, and a tension clutch pulley that biases the input side of the transmission mechanism is provided. , a locking member is pivotally connected to the support arm of the pulley in a freely movable manner;
The locking member is provided with a recessed portion that is caused to engage and lock the fixed locking pin when the locking member swings upward from the hanging position under its own weight, thereby maintaining the clutch disengaged state. The locking member is characterized by being provided with a cam surface that presses and displaces the locking member toward the detachment side by the pin as the locking member swings.

The effects of the above configuration are as follows.

That is, when a blockage occurs in the first article conveyance mechanism or the second article conveyance mechanism, the tension clutch pulley is cut and operated, the locking member is swung, the recess is fitted onto the pin, and the biasing force is applied. The clutch is maintained in the disengaged state using the clutch, and in that state the discharge device is driven to discharge the grains in the tank.The tank is then separated from the threshing device with the tank empty to clear the blockage. After the blockage is cleared, the grain tank is returned to the adjacent position and the pulley support arm is swung toward the cut side, so that the cam surface easily releases the concave portion from the pin and releases the locking member. The clutch swings under its own weight and is separated, and is then switched to the engaged state by the biasing force.

The effects of the above action are as follows.

That is, the grain tank can be easily displaced at all times in an empty state, and the locking member can be provided in a simple structure in which the locking member is swingably provided on the support arm in order to turn the clutch on and off in the transmission structure for this purpose. The cam surface makes it easier to engage the clutch after clearing the jam.

Hereinafter, embodiments of the present invention will be described in detail with reference to illustrative drawings.

A traveling aircraft equipped with a crawler traveling device 1,
A reaping section 2 and a control section 3 are arranged side by side in the left-right direction of the machine, and a threshing device 4 is provided behind the reaping section 2.
However, a grain tank 5 is provided behind each control section 3 to constitute a combine harvester.

In the threshing device 4, a handling cylinder 6 and a processing cylinder 7 are arranged side by side so as to be freely driven and rotatable around the axis in the longitudinal direction of the machine, and a swinging sorting plate 8 is provided below them, and a first screw 9 is provided below them. and second screw 1
0 is provided to thresh the harvested grain culm which is pinched and conveyed by the feed chain 11, and also to sort it by the cooperation of the swinging by the swinging sorting plate 8 and the air blowing from the winnower 12, The first grain is supplied from the end of the first screw 9 to the grain tank 5 via the vertical screw 13, and the second grain is fed from the end of the second screw 10 to the grain frying device 14.
The grains are respectively configured to be supplied to the processing cylinder 7 for re-threshing via the grains.

At the lower part of the grain tank 5, a transverse feed screw 15 is provided facing in the longitudinal direction of the machine body, and a blade body 16 is connected to the rear end thereof, and a conveying tube 17 is provided in the vertical direction in series with the blade body 16. A discharge device 18 is configured to discharge the grains from the grain tank 5.

To drive the threshing device 4 and the discharge device 18, as shown in FIG. It is branched into a first transmission system 22 and a second transmission system 23, and in the second transmission system 23, the camshaft 25 of the swinging sorting plate 8, the first screw 9, and the second screw 10 are connected via a tension clutch 24. ,
Karasaki 12, vertical screw 13 and grain frying device 14
On the other hand, the first transmission system 22 is configured to transmit power to the handling cylinder 6 and the processing cylinder 7, respectively, and the discharging device 18 is transmitted via a clutch 26 on the downstream side thereof. It is configured to transmit power to the

The grain tank 5 is attached so as to be rotatable around the vertical axis P at the rear end horizontally outward and to be fixed in position. Normally, the grain tank 5 is fixed at a position adjacent to the threshing device 4. , Said Ichiban Screw 9
or if the second screw 10 becomes clogged,
The tension clutch 24 is disconnected to cut off the power transmission to the second transmission system 23, and the ejection device 18 is driven to eject the grains from the grain tank 5, and the grains are rotated to a position away from the threshing device 4 in a lightened state. It is configured to be fixed by being dynamically displaced so that clogging and maintenance and inspection of the transport end portions of both screws 9 and 10 can be easily cleared.

As shown in FIG. 4, the tension clutch 24 includes a puller that urges the support arm 29 of the pulley 28 that acts on the belt-type transmission mechanism 27 to swing toward the clutch engagement side. The tension spring 30 is tensioned, and the support arm 2
A locking member 31 is pivotally connected to a midway point in the longitudinal direction of the locking member 31 , and a recess 32 is formed on the free end side of the locking member 31 . The tension clutch pulley 28 is maintained in the disengaged state using the biasing force of the tension clutch pulley 28.

The locking member 31 is pivotally supported by the support arm 29 so that the recess 32 is locked to the pin 33 in a state in which the locking member 31 is swung upward rather than in a lowered position due to its own weight in the clutch disengaged state; In addition, in the locked state, the surface of the recess 32 on the support arm 29 side is configured as a cam surface F such that the length from the swing axis of the support arm 29 becomes longer as the opening side increases. When the clutch 24 is engaged, the support arm 29 is swung toward the cut side and then the hand is released, thereby easily and reliably disengaging the locking member 31 from the pin 33 and switching the clutch 24 to the engaged state. has been done.

The system consisting of the first screw 9 and the vertical screw 13 is collectively referred to as the first product transport mechanism, and the system consisting of the second screw 10 and the grain lifting device 14 is collectively referred to as the second product transport mechanism.

[Brief explanation of the drawing]

The drawings show an embodiment of the clutch structure of a combine harvester with a grain tank according to the present invention, FIG. 1 is an overall side view of the combine, FIG. 2 is an overall plan view of the combine, and FIG. 3 is a system diagram showing the drive system. , FIG. 4 is a side view of the main part. 4... Threshing device, 5... Glen tank, 18...
... Discharge device, 19 ... Engine, 22 ... First transmission system, 23 ... Second transmission system, 27 ... Belt type transmission mechanism, 28 ... Pulley, 29 ... Support arm,
31... Locking member, 32... Recess, 33... Fixed locking pin, F... Cam surface.

Claims (1)

[Scope of utility model registration request] A grain tank 5 is placed adjacent to the threshing device 4 and is movable between a position adjacent to the threshing device 4 and a position separated from the adjacent position.
This is a clutch structure of a combine harvester with a grain tank, in which a drive type discharge device 18 is attached to the grain tank 5. , a first transmission system 2 to the ejection device 18
interlockingly connected via a second transmission system 23 different from 2,
And, the second transmission system 23 includes a belt type transmission mechanism 2.
7, and the transmission mechanism 27 is provided with a tension clutch pulley 28 for biasing the entry side, and a locking member 31 is pivotally connected to the support arm 29 of the pulley 28 so as to be swingable. A recess 32 is attached to the clutch to maintain the clutch in the disengaged state by fitting and locking the fixed locking pin 33 by swinging upward from the hanging position under its own weight, and the recess 32
A clutch structure for a combine harvester with a grain tank is provided with a cam surface F that presses and displaces the locking member 31 toward the disengagement side by the pin 33 as the support arm 29 swings toward the clutch disengagement side.