JPH09238560A - Grain discharge device for combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the grain discharge device of a combine with improved work efficiency capable of executing the accurate and smooth housing operation of an extendable and contractable helical cylinder for shortening the extendable and contractable helical cylinder prior to a base part helical cylinder before a horizontal helical cylinder is turned to an auger receiving position. SOLUTION: This device is provided with a vertical helical cylinder 2 for receiving and lifting grains discharged from a grain tank 1 and the freely extendable and contractable and freely turnable horizontal helical cylinder 3 provided successively to the upper end of the vertical helical cylinder 2. In the return process from a grain discharge position to a housing position to be received by an auger receiver 4 of the horizontal helical cylinder 3, the extendable and contractable helical cylinder 6 on a tip side is shortened prior to the base part helical cylinder 5 of the horizontal helical cylinder 3 before the horizontal helical cylinder 3 is turned to the position of the auger receiver 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain combiner for combine harvesters, which controls rotation and expansion / contraction of a transfer spiral cylinder for discharging grains contained in a grain tank.

[0002]

In the mode in which the discharge direction is controlled by the vertical spiral cylinder and the horizontal spiral cylinder connected to the upper end of the grain stored in the grain tank, the length of the horizontal spiral cylinder is changed. If it is configured to extend and contract to extend the discharge port at the tip to the grain-removing position or shorten it to the storage position, the swiveling and expansion and contraction of these horizontal spiral cylinders compete with each other, and shortening to the storage position is faster than turning to the storage position. If it is delayed, it may be difficult to shorten the horizontal spiral cylinder.

[0003]

The present invention is directed to a vertical spiral cylinder 2 for receiving grains discharged from a grain tank 1 and lifting the grains.
And a horizontal spiral tube 3 which is connected to the upper end of the vertical spiral tube 2 and is extendable and retractable and rotatable. From the grain-removal position of the horizontal spiral tube 3 to the storage position for receiving the auger receiver 4. In the return stroke of, the telescopic spiral tube 6 on the distal end side is preferentially shortened with respect to the base spiral tube 5 of the horizontal spiral tube 3 before the horizontal spiral tube 3 turns to the auger receiving position 4. The combine grain arranging device shall be configured as follows.

[0004]

[Effects of the Invention] When the combine is mowing, the horizontal spiral cylinder 3
Is supported by the auger holder 4 and stored. When the grains stored in the Glen tank 1 are full, the harvesting is temporarily stopped and the grain is removed. In this grain removal, the horizontal spiral cylinder 3 of the auger receiver 4 is raised and swung around the vertical spiral cylinder 2 toward the discharge position. Further, in the horizontal spiral cylinder 3, the expansion spiral cylinder 6 is extended with respect to the base spiral cylinder 5 so that the discharge port at the tip can be aligned with the discharge position. As a result, these vertical spiral cylinders 2
And the transfer tank in the horizontal spiral cylinder 3 are interlocked with each other, and the Glen tank 1
The grain inside is discharged to the target position.

When the horizontal spiral cylinder 3 is returned from the grain-removing position to the storage position of the auger receiver 4, the contraction operation of the telescopic spiral cylinder 6 in the extended position causes the horizontal spiral cylinder 3 to move to the auger receiver 4 position. The telescopic spiral tube 6 is prioritized until the turning is completed.
It is possible to perform an accurate and smooth storage operation of the retractable spiral tube 6 without being shortened while being supported on the auger receiver 4.

[0006]

[Examples] A combine is a self-defining type that accommodates the threshing device 7 for threshing by feeding only the ears into the threshing chamber while holding and transporting the grain culms by the feed chain, and the threshing device 7. The Glen tank 1 and the crawler traveling device 9
The threshing device 7 is provided on the chassis 10 having the above, and the threshing device 7 is provided in front of the threshing device 11 so as to receive and feed the grain stems to be mowed. An engine cover 12, a cockpit 13, a cockpit 14 and the like are provided in front of the chassis 10 and in front of the Glen tank 1.

A bottom gutter 15 is provided at the bottom of the Glen tank 1 along the front-rear direction, and a transfer spiral 16 is provided along the bottom gutter 15. At the rear end of this bottom gutter 15 is a vertical spiral tube 2 in the vertical direction.
Is driven to rotate by the control motor M1, and has a transfer spiral 17 interlocked with the transfer spiral 16 inside, and can receive grains transferred from within the grain tank 1 and lift them.

Further, on the upper part of the vertical spiral cylinder 2, a horizontal spiral cylinder 3 having a transfer spiral 18 is vertically rotatably connected and receives grains transferred from the vertical spiral cylinder 2. It can be transferred to the discharge port 19 side at the tip. The horizontal spiral cylinder 3 is vertically rotated by a hydraulic telescopic cylinder, an electric telescopic cylinder 20, and the like. The horizontal spiral cylinder 3 includes a base spiral cylinder 5 on the vertical spiral cylinder 2 side and an expandable telescopic spiral cylinder 6 that is fitted to the tip end side of the base spiral cylinder 5 and extends and contracts along the horizontal spiral cylinder 3. By driving the screw rod 21 in the forward and reverse directions by the control motor M2, the expandable spiral cylinder 6 having the screw boss 22 fitted thereto can be expanded and contracted in the axial direction.

The transfer spiral 18 in the horizontal spiral cylinder 3 is composed of a base spiral 23 axially mounted in the base spiral cylinder 5 and a telescopic spiral 24 positioned in the telescopic spiral tube 6. The telescopic spiral 24 is a spiral. A fixed unit length is fitted on the outer periphery of the shaft 25, and the spring 26
Is interposed to expand in the axial direction. This spiral shaft 25
Is provided so as to extend and contract with respect to the spiral shaft 27 side on the base spiral 23 side by spline shaft fitting or the like. Reference numeral 28 denotes a bearing metal, which bears the tip of the base spiral shaft 27 on the tip of the base spiral cylinder 5.

The auger receiver 4 is provided so as to support the posture of the cockpit 13 along the side of the threshing device 7 at a substantially horizontal position of the horizontal spiral cylinder 3, and the horizontal spiral cylinder 3 is supported on the upper surface thereof. An automatic stop switch 29 is provided which is activated.
The controller CPU for controlling the horizontal spiral tube 3 to the grain-removing position or the storage position includes a grain-removing mode switch 30 for turning the horizontal spiral tube 3 toward the grain-removing position side, and a grain-retracting position for storing in the auger receiver 4. A storage mode switch 31 is provided.
A manual switch 32 for moving the horizontal spiral cylinder 3 to the grain-removing position or the storing position by operating each of the motors M1 and M2, the cylinder 20, etc. with a manual operation switch is provided, and the switch is simply turned on.
An automatic switch 33 that automatically operates at the position selected by the grain-removal mode switch 30 or the storage mode switch 31 is provided. 34 is each of the switches 30, 31,
It is an operation panel on which 32, 33 and the like are arranged.

In the controller CPU, when the storage mode switch 30 is turned on, the motor M2 is shortened to move the telescopic spiral cylinder 6 to the base spiral cylinder 5 side, and the horizontal spiral cylinder 3 is in the shortest position. The motor M1 is output to rotate the vertical spiral cylinder 2 and the horizontal spiral cylinder 3 from the grain-removal position to the storage position. The operation of the cylinder 20 is also stopped by the automatic stop switch 29 by which the horizontal spiral cylinder 3 is received by the auger receiver 4.

Further, when the horizontal spiral cylinder 3 pivots on the auger holder 4, the expansion / contraction spiral cylinder 6 is shortened by the output of the motor M2, and after this shortening, the telescopic spiral cylinder 6 is lowered by the solenoid output of the cylinder 20 to auger. It is also possible to adopt a configuration in which it is received on the receiver 4. Further, the speed of the shortening operation by the motor M2 may be increased so as to be shortened at a timing earlier than the turning or descending operation.

In FIG. 5, the difference from the above example is that in the screw rod 21 that expands and contracts the expandable spiral tube 6, the screw pitch is set smaller at the front end portion A and the rear end portion B with respect to the central portion, and the expansion and contraction is performed. The spiral cylinder 6 is decelerated at the movement end portion to buffer the contact of the stop switches 35 and 36 provided at the movement end portion. These stop switches 35 and 36 are provided so as to face the screw boss 22, and when the screw boss 22 pushes the stop switch 22, the extension drive or the shortening drive of the motor M2 is turned off. Reference numeral 37 is a cover that covers the screw rod 21.

In FIG. 6, the difference from the above example is that a rotatable bearing roller 38 is provided at the base end of the expandable spiral tube 6.
Is provided and is brought into sliding contact with the lower peripheral surface of the base spiral cylinder 5 to prevent the expansion and contraction spiral cylinder 6 from hanging down. This roller 38 is provided with a notch 39 at the base end of the expandable spiral cylinder 6 and is positioned at this cutout 39 so that the tip end surface 40 of the expandable spiral cylinder 6 is positioned closer to the base side than the roller 38. There is. Reference numeral 41 is a stopper projecting from the base end of the base spiral cylinder 5.

In FIG. 7, the difference from the above example is that the structure of the expanding and contracting spiral 24 is such that the weight of the spiral S4 at the central portion in the front-rear direction is the smallest and the spiral S3 extending in the front-rear direction from this
By sequentially increasing the weight in the order of S2 → S1, and S5 → S6 → S7, it is possible to reduce the amplitude C of the spiral shaft 25 of the expanding and contracting spiral 24 during grain removal. The weight of each spiral S1 to S7 is set by changing the wall thickness of the spiral blade.

[Brief description of drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a control block diagram of the grain control device.

FIG. 3 is a side view of a horizontal spiral tubular portion.

FIG. 4 is a plan view of a part of the combine.

FIG. 5 is a side view of a horizontal spiral tubular portion showing another embodiment and a sectional view of a part thereof.

FIG. 6 is a side view of a horizontal spiral cylinder portion showing a part of another embodiment and a front sectional view thereof.

FIG. 7 is a side view of a horizontal spiral cylinder portion showing another embodiment and a vibration diagram of the spiral shaft portion.

[Explanation of symbols]

 1 Glen tank 2 Vertical spiral cylinder 3 Horizontal spiral cylinder 4 Auger receiving 5 Base spiral cylinder 6 Telescopic spiral cylinder

Claims (1)

[Claims] 1. A vertical spiral tube 2 for receiving grains discharged from a grain tank 1 and lifting the grains, and a horizontal spiral tube 3 which is continuously connected to the upper end of the vertical spiral tube 2 and is expandable and rotatable. In the returning process from the grain-removing position of the horizontal spiral cylinder 3 to the storage position where the horizontal spiral cylinder 3 receives the auger receiver 4, the horizontal spiral cylinder 3 is rotated to the auger receiver 4 position by 2. The combine grain-removing device, wherein the telescopic spiral tube 6 on the tip side is preferentially shortened with respect to the base spiral tube 5.