JPH0974883A - Grain delivery apparatus of combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the spill-out of grains remaining in a horizontal screw conveyor. SOLUTION: When a grain delivery clutch CL for transmitting the driving force to a horizontal screw conveyor in the grain-delivery direction is disconnected, an electric motor 18 is engaged with a screw driving gear 19 and driven by a signal transmitted from a reverse-rotation controlling means 21 to a driving circuit 18b based on the information transmitted from a detection switch 20 to detect the operation of the clutch lever 16 to the disconnected state. The electric motor 18 drives a screw-driving gear 19 to drive the horizontal screw conveyor in a direction opposite to the grain delivery direction to return the grains remaining near the grain outlet port to the upstream side in the delivery direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical screw conveyor for lifting grains from a grain tank. The present invention relates to a grain transporting device for combine harvesters, which is provided with a horizontal screw conveyor that laterally feeds grains, and the horizontal screw conveyor is provided with a grain discharge port.

[0002]

2. Description of the Related Art In the above-mentioned grain carrying-out device, when the driving of the vertical screw conveyor and the horizontal screw conveyor is stopped to stop the grain carrying-out, the spiral screw of the horizontal screw conveyor carries the lower end located closest to the carrying side. In most cases, the rotation is stopped when the cylinder is located away from the discharge port end to the conveyor base end side. For this reason,
When the grain discharge was stopped, the grains were likely to remain near the grain discharge port of the horizontal screw conveyor.

[0003]

Conventionally, when the grain remains in the horizontal screw conveyor as described above when the grain discharge is stopped, when the horizontal screw conveyor is stored from the use position, the storage swing or the storage is performed. There was a case where the residual kernels spilled out from the kernel discharge port due to the vibration due to the rocking or the spiral screw rotating due to the interlocking relationship with the vertical screw conveyor due to the storage and rotation. Also,
Even when the horizontal screw conveyor was stored and harvesting was performed, residual grains sometimes spilled from the grain discharge port due to traveling vibration. The purpose of the present invention is, even if the grain remains on the horizontal screw conveyor when the grain discharge is stopped,
The purpose is to prevent the spillage as described above.

[0004]

The constitution, operation and effect of the present invention according to claim 1 are as follows.

[Structure] A vertical screw conveyor for lifting grains from a grain tank, which is connected to the upper part of the vertical screw conveyor so as to be capable of swiveling and undulating and swinging, and the grains from the vertical screw conveyor are laterally fed. With a horizontal screw conveyor to do, in a grain carry-out device of a combine provided with a grain discharge port in the horizontal screw conveyor, a reverse drive mechanism for driving the horizontal screw conveyor in a direction opposite to the grain carry-out direction There is.

[Operation] After the grain is carried out, the reverse rotation drive mechanism is manually operated to be driven for a predetermined time, or automatically operated to be driven for a predetermined time. Then, even when the grain remains in the vicinity of the grain discharge port of the horizontal screw conveyor when the driving of the screw conveyor is stopped, the residual grain is separated from the vicinity of the grain discharge port to the good side of conveyance. The horizontal screw conveyor can be used to return to a location where spills are unlikely to occur.

[Effect] Even if the grain remains, it can be returned to the upper side of the transport where it is difficult to spill from the grain discharge port, so that when the grain transport is stopped, the conveyor is driven until the grain is exhausted. Even if it does not take time to prevent the residue from remaining, it is possible to store and work the conveyor while preventing the grains from spilling out after they are delivered, and the time to interrupt the work for delivering the grains can be minimized. I was able to work efficiently.

The structure, operation and effect of the present invention according to claim 2 are as follows.

[Configuration] In the configuration of the present invention according to claim 1, when the grain carrying-out drive of the vertical screw conveyor and the horizontal screw conveyor is stopped, until the set time elapses after the drive is stopped, The control means for automatically driving the reverse rotation drive mechanism is provided.

[Operation] The time required to drive the horizontal screw conveyor in order to return the residual kernels to the upstream side of the conveyor which is unlikely to spill from the grain discharge port is set as the set time. Then, when the carry-out drive of both screw conveyors is stopped to stop the grain carry-out, the control means automatically drives the reverse rotation drive mechanism for the set time, and the horizontal screw conveyer removes the residual grain from the grain discharge port. Conveyance that is difficult to spill Back to the superior side for conveyance.

[Effect] The horizontal screw conveyor is automatically driven so as to carry back the residual grain by simply stopping the transport drive of the conveyor, so that the grain does not spill out after the grain is carried out. However, the one that can store and work the conveyor will be easy to operate.

The structure, operation, and effect of the present invention according to claim 3 are as follows.

[Structure] In the structure of the present invention according to claim 1, a storage switch is provided, and when the storage switch is operated, the horizontal screw conveyor is automatically stored and the storage switch is operated. The control means for automatically driving the reverse rotation drive mechanism is provided until the set time elapses from the start.

[Operation] The time required to drive the horizontal screw conveyor in order to return the residual grain from the grain discharge port to the upstream side where it is difficult to spill is set as the set time. Then, when the storage switch is operated, the control means automatically stores the horizontal screw conveyor. At the same time, the control means automatically drives the reverse rotation drive mechanism for the set time, and the horizontal screw conveyor returns and conveys the residual grain to the good side of the conveyance which is difficult to spill from the grain discharge port.

[Effect] The horizontal screw conveyor is stored only by operating the storage switch and is driven so as to return and convey the residual grain, so that the grain is prevented from spilling out after the grain is conveyed out, and the conveyor is conveyed. It is easy to store and work items in terms of storage operation and spill prevention operation.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

[Embodiment 1] As shown in FIGS. 1 and 2, a cutting pretreatment device 1 that causes planting stem culms such as rice and wheat and mows and conveys the cut stalks to the rear of the machine. A threshing device 5, which is connected to a front part of a self-propelled machine having a driving part 3 and a driving part 4 so as to be capable of moving up and down, and which threshes the cutting stems from the cutting pretreatment device 1.
The grain tank 6 for storing the threshing grains from the threshing device 5 is provided in the self-propelled machine body to configure a combine.

As shown in FIG. 3, a bottom screw 7 installed in the grain tank 6, a vertical screw conveyor 8 attached to the rear wall surface side of the grain tank 6, and an upper portion of the vertical screw conveyor 8 in the vertical direction of the machine body. A grain carrying-out device for the grain tank 6 is constituted by a horizontal screw conveyor 9 connected so as to be pivotable around an axis X and to be capable of undulating and swinging around a horizontal axis Y. . FIG.
As shown in FIG. 4 and FIG. 4, the screw drive pulley 1 integrally rotatably attached to the end of the screw shaft of the bottom screw 7 projecting from the grain tank 6 to the front side of the machine body.
0 and the drive pulley 11 that is interlocked with the engine provided in the drive unit 4 and winds the transmission belt 12, and the tension arm 13 for the transmission belt 12 is swingable on the support member 13a. By attaching and configuring a belt tension type grain carrying-out clutch CL, and by turning on and off the grain carrying-out clutch CL,
The grain carrying-out device is configured to be driven to carry out the grain, or to be stopped to be stopped from carrying the grain.

That is, the clutch lever 16 is connected to the motor support member 14 attached to the tension arm 13 so as to be capable of swinging integrally, via the coil spring 15a and the operation cable 15b.
When the lever is oscillated to move to the engaged position, the tension arm 13 presses the transmission belt 12 by this lever operating force to operate the transmission belt 12 in a tensioned state, whereby the grain carrying-out clutch CL is engaged. . Then, the driving force of the driving pulley 11 is transmitted to the screw driving pulley 10 by the transmission belt 12, so that the screw driving pulley 10 drives the bottom screw 7 and the bottom screw 7
Is transmitted to the vertical slew conveyor 8 to rotationally drive the spiral screw 8a of the vertical screw conveyor 8, and the rotational power of this spiral screw 8a is transmitted to the horizontal screw conveyor 9
To the spiral screw 9 of the horizontal screw conveyor 9
Rotate a. For this reason, the bottom screw 7 sends out the threshed grains in the grain tank 6 to the rear of the grain tank 6, the vertical screw conveyor 8 takes over the threshed grains from the bottom screw 7 and lifts them, and the horizontal screw conveyor 9 vertically. The grain removal from the screw conveyor 8 is taken over, and it is fed laterally to the grain discharge pipe 9b located on the tip side, and discharged from the grain discharge port 9c formed by the grain discharge pipe 9b.

When the clutch lever 16 is operated to the disengaged position, the tension arm 13 is separated from the transmission belt 12 by the urging force of the clutch disengagement spring 17 connected to the tension arm 13, and the transmission belt 12 is operated in a loose state. The grain carrying-out clutch CL is turned off.
Then, from the driving side pulley 11 to the screw drive pulley 1
When the transmission to 0 is cut off, the bottom screw 7, the vertical screw conveyor 8 and the horizontal screw conveyor 9 are stopped driving, and the grain discharge is stopped.

An electric motor 18 is attached to the motor support member 14.
When the grain carrying-out clutch CL is operated to disengage, the output gear 18a of the electric motor 18 rotates integrally with the screw shaft of the bottom screw 9 for swinging operation of the motor supporting member 14 by the clutch disengaging spring 17. It meshes with a screw drive gear 19 that is movably attached, and the electric motor 18 can drive the bottom screw 7, the vertical screw conveyor 8 and the horizontal screw conveyor 9, and when the grain carry-out clutch CL is turned on and off. The output gear 18a of the electric motor 18 is disengaged from the screw drive gear 19 due to the swinging operation of the motor support member 14 by the entering operation, and the bottom screw 7 is vertically moved by the power transmitted from the driving pulley 11. It becomes possible to drive the screw conveyor 8 and the horizontal screw conveyor 9. It is the sea urchin configuration. The reverse rotation control means 21 is linked to a detection switch 20 provided so as to be brought into contact with the clutch lever 16 near the clutch lever 16 when the clutch lever 16 is operated to a disengaged position, and the switching operation is performed. To the electric motor 18
The drive circuit 18b of FIG. Detection switch 20
Detects that the grain carry-out clutch CL has been switched by detecting the switching of the clutch lever 16 to the disengaged position, and outputs the detection result to the reverse rotation control means 21. Then, the reverse rotation control means 21 determines that the grain discharging drive of the vertical screw conveyor 8 and the horizontal screw conveyor 9 is stopped based on the information from the detection switch 20, and outputs a motor drive signal to the drive circuit 18b. The electric motor 18 is automatically driven. The electric motor 18 driven by the control of the reverse rotation control means 21 drives the screw drive gear 19 in a predetermined rotation direction to move the bottom screw 7 to the driving pulley 11.
The vertical screw conveyor 8 and the horizontal screw conveyor 9 are driven in the direction opposite to the grain carrying-out direction by driving in the direction opposite to the driving direction by the power transmission from the. The reverse rotation control unit 21 drives the electric motor 18 and at the same time measures the elapsed time from the time when it is determined that the grain discharging drive of the vertical screw conveyor 8 and the horizontal screw conveyor 9 is stopped, and this elapsed time is preliminarily measured. When the set and input set time is reached, a motor stop signal is output to the drive circuit 18b to automatically stop the drive of the electric motor 18, so that the vertical screw conveyor 8 and the horizontal screw conveyor by the electric motor 18 are stopped. The reverse rotation drive of 9 is stopped.

As a result, when the grain carrying-out clutch CL is operated to stop the grain carrying-out drive of the vertical screw conveyor 8 and the horizontal screw conveyor 9 to stop the grain carrying-out, the reverse rotation control means 21 causes the reverse rotation control means 21 to detect the detection switch 20. The electric motor 18 is automatically driven by detecting that the driving of the vertical screw conveyor 8 and the horizontal screw conveyor 9 has stopped based on the detection result of 1. Then, the electric motor 18 drives the horizontal screw conveyor 9 in the direction opposite to the grain unloading direction, so that the horizontal screw conveyor 9 returns and transports the grain remaining inside when the grain unloading is stopped to the upper side in the transport direction. . At this time, if only the horizontal screw conveyor 9 is driven and the vertical screw conveyor 8 is stopped without being driven, there is a problem that grains flowing back through the horizontal screw conveyor 9 are clogged at the upper end of the vertical screw conveyor 8 and damaged. Although it may occur, in order to avoid this trouble occurrence, the vertical screw conveyor 8 is also driven in the direction opposite to the grain carrying-out direction so that the residual grain inside and the backward-flowing grain from the horizontal screw-conveyor 9 flow back. Let When the horizontal screw conveyor 9 is swirled and stored, the spiral screw 9a is rotated toward the grain discharge side when the horizontal screw conveyor 9 is swirling and storing the grain remaining near the grain discharge port 9c of the horizontal screw conveyor 9 when the grain discharge is stopped. In order to prevent the grains from spilling out of the grain discharge port 9b even if the horizontal screw conveyor 9 vibrates due to traveling vibration, the grain discharge port 9b is returned to a position away from the grain discharge port 9b and conveyed. By setting the time required to drive the horizontal screw conveyor 9 in order to set as the set time, the residual grains that are conveyed back inside the horizontal screw conveyor 9 are unlikely to spill from the grain discharge port 9c. When the position is reached, the reverse rotation control means 21 causes the electric motor 18
Is automatically stopped, and the horizontal screw conveyor 9 and the vertical screw conveyor 8 are stopped in the opposite direction to the grain carrying-out direction.

[Second Embodiment] A configuration in which an electric motor 18 drives a grain unloading device, a grain unloading clutch CL, a vertical screw conveyor 8 and a horizontal screw conveyor 9 of the grain unloading device in a direction opposite to the grain unloading direction. Is configured similarly to the first embodiment.

As shown in FIG. 5, a swivel gear 23 is integrally rotatably attached to a connecting member 22 that swivels the horizontal screw conveyor 9 to the vertical screw conveyor 8 and meshes with the swivel gear 23. Output gear 24a
The electric swing motor 24 having a vertical screw conveyor 7
The horizontal screw conveyor 9 is configured to be rotated around the vertical axis X by the swing motor 24, and the horizontal screw conveyor 9 is connected to the connecting member 22.
A lift cylinder 26 is attached to the swinging arm 25 connected to the horizontal screw conveyor 9 so as to rotate together with the connecting member 22.
The horizontal screw conveyor 9 is configured to swing around the horizontal axis Y by the reference numeral 6.

As shown in FIG. 6, a drive circuit 24b for the swing motor 24, an electromagnetic control valve 26a for the lift cylinder 26, and a drive circuit 18b for the electric motor 18.
A storage switch 28 provided in the operating unit 3 is linked to the control means 27 linked to the. The control means 27 is composed of a microcomputer and is configured to operate as follows.

That is, when the storage switch 28 is turned on and the storage switch 28 outputs a storage command signal to the control means 27, the control means 27 drives the drive circuit 24b to drive the motor based on the information from the storage switch 28. By outputting a use signal to automatically drive the swing motor 24 to the storage side, the swing motor 24 causes the horizontal screw conveyor 9 to be stored and rotated. At the same time, the control means 27 switches the control valve 26a to the shortening side to automatically drive the lift cylinder 26 to the shortening side, thereby causing the lift cylinder 26 to perform the descending and storing operation of the horizontal screw conveyor 9. When the horizontal screw conveyor 9 turns to the storage position A in the turning direction shown in FIG. 2, as shown in FIG. 5, a switch operating member (not shown) provided integrally rotatable with the connecting member 22. Storage detection switch 2 supported by the vertical screw conveyor 8
The storage detection switch 29 detects that the horizontal screw conveyor 9 has reached the swivel storage position A by abutting against 9 and switching the detection switch 29, and outputs the detection result to the control means 27. Then, the control means 2
7 outputs a motor stop signal to the drive circuit 24b to stop the drive of the swing motor 24, thereby turning the swing motor 2
The turning operation of the horizontal screw conveyor 8 by 4 is stopped. When the horizontal screw conveyor 9 swings downward to reach the storage position B in the up-and-down swing direction shown in FIG. 1, the swing detection of the swing arm 25 supported by the connecting member 22 as shown in FIG. When the horizontal screw conveyor 9 is moved to the lower storage position B by contacting the switch 30 and switching the detection switch 30,
Then, the detection result is output to the control means 27. Then, the control means 27 switches the control valve 26a to the neutral position and stops the drive of the lift cylinder 26, thereby stopping the lowering operation of the horizontal screw conveyor 8 by the lift cinder 26.

The control means 27 controls the swing motor 24 and the lift cylinder 2 based on the information from the storage switch 28.
6 is operated to store the horizontal screw conveyor 9, and at the same time, a predetermined motor driving signal is transmitted to the drive circuit 18b to drive the electric motor 18, whereby the vertical screw conveyor 8 and the horizontal screw conveyor 9 are driven by the electric motor 18. Driving is performed in a direction opposite to the grain carrying-out direction, and the elapsed time from when the storage switch 28 is operated is measured. When this elapsed time reaches a preset time that has been set and input in advance, the control means 27 transmits an electric motor stop signal to the drive circuit 18b to stop the drive of the electric motor 18 to stop the electric motor 1.
The driving of the vertical screw conveyor 8 and the horizontal screw conveyor 9 by 8 in the direction opposite to the grain carrying-out direction is stopped.

As a result, when the grain carry-out clutch CL is turned off to stop the grain carry-out drive of the vertical screw conveyor 8 and the horizontal screw conveyer 9 to stop the grain carry-out, the storage switch 28 is operated. Control means 27
Drives the swing motor 24 and the lift cinder 26 to the storage side based on the storage command from the storage switch 28, so that the horizontal screw conveyor 9 becomes the storage position A in the swing direction and the storage position B in the undulating swing direction. Automatically store in the storage location. At this time, the control means 27 automatically drives the electric motor 18, so that the electric motor 18 drives the vertical screw conveyor 8 and the horizontal screw conveyor 9 in the direction opposite to the grain discharge direction,
The horizontal screw conveyor 9 returns and conveys the grain remaining inside when the grain discharge is stopped to the upper side in the conveying direction, and the backward-flowing grain from the horizontal screw conveyor 9 is blocked at the upper end of the vertical screw conveyor 8 and is not damaged. Thus, the vertical screw conveyor 8 also returns and conveys the grain to the upper side in the conveying direction. The grains remaining near the grain discharge port 9c of the horizontal screw conveyor 9 when the grain discharge is stopped are transferred to the grain discharge port 9
By setting the time required to drive the horizontal screw conveyor 9 to return and convey to the place away from the grain discharge port 9b to the upper side in the conveying direction so as not to easily spill out from b, the set time is set. When the residual grain conveyed back inside the horizontal screw conveyor 9 reaches a place where it is difficult to spill from the grain discharge port 9c, the control means 27 automatically stops the driving of the electric motor 18,
The electric motor 18 stops driving the horizontal screw conveyor 9 and the vertical screw conveyor 8 in the direction opposite to the grain carrying-out direction. As a result, when the horizontal screw conveyor 9 is stored based on the storage command from the storage switch 28, the electric motor 18 drives the residual grain in a direction opposite to the grain discharge direction so as to return the residual grain to the upper side in the transport direction. The storage operation is performed while being performed.

The swivel switch 31 shown in FIG. 6 outputs a swivel command to the control means 27 to drive the swivel motor 24 in the forward rotation direction and the reverse rotation direction to perform the turning operation of the horizontal screw conveyor 9. The hoisting switch 32 outputs a hoisting command to the control means 27, and drives the lift cylinder 26 in the shortening direction and the extending direction to perform the hoisting and rocking operation of the horizontal screw conveyor 9.

[Other Embodiments] In place of the electric motor 18, the engine output is transmitted to the vertical screw conveyor 8 and the horizontal screw conveyor 9 to drive both conveyors 8 and 9, and the rotational output from the engine is supplied to the transmission system. Rotation that can be transmitted by switching between a forward rotation direction in which the conveyors 8 and 9 rotate in the grain discharge direction and a reverse rotation direction in which both conveyors 8 and 9 rotate in the opposite direction to the grain discharge direction By providing the direction switching mechanism, it is possible to drive the both conveyors 8 and 9 in a direction opposite to the grain carrying-out direction. Further, for example, the vertical screw conveyor 8 is provided with a drive mechanism dedicated to the vertical screw conveyor for driving only the conveyor 8 in the grain carrying-out direction, and the horizontal screw conveyor 9 is provided.
Is provided with a drive mechanism exclusively for the horizontal screw conveyor, which is capable of driving only the conveyor 9 and switching between the grain carrying-out direction and the opposite direction, and the direction opposite to the grain carrying-out direction of the horizontal screw conveyor 9 is provided. It is also possible to employ a mechanism in which only the horizontal screw conveyor 9 can be driven in a direction opposite to the grain carrying-out direction, for example, by enabling the driving.
Therefore, these are collectively referred to as the reverse rotation drive mechanism 18 that drives the horizontal screw conveyor 9 in the direction opposite to the grain carrying-out direction.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of drawings]

1] Side view of the whole combine

FIG. 2 is a plan view of the whole combine.

FIG. 3 is a side view of the grain carrying-out device.

FIG. 4 is an explanatory view of a grain carrying-out clutch.

FIG. 5 is a side view of a horizontal screw conveyor connecting portion.

FIG. 6 is a block diagram for controlling a horizontal screw conveyor.

[Explanation of symbols]

 6 Grain Tank 8 Vertical Screw Conveyor 9 Horizontal Screw Conveyor 9c Grain Discharge Port 18 Reverse Driving Mechanism 21 Control Means 27 Control Means 28 Storage Switch

Claims (3)

[Claims] 1. A vertical screw conveyor (8) for pumping grains from a grain tank (6), the vertical screw being connected to an upper portion of the vertical screw conveyor (8) so as to be capable of swinging and undulating and swinging. With a horizontal screw conveyor (9) for laterally feeding the grain from the conveyor (8),
The horizontal screw conveyor (9) has a grain discharge port (9c).
A grain export device of a combine, comprising a reverse drive mechanism (18) for driving the horizontal screw conveyor (9) in a direction opposite to the grain export direction. 2. When the grain carrying-out drive of the vertical screw conveyor (8) and the horizontal screw conveyor (9) is stopped, the reverse rotation drive mechanism (18) is set until a set time elapses after the drive is stopped. 2. The combine grain discharging apparatus according to claim 1, further comprising a control means (21) for automatically driving the grain. 3. A storage switch (28) is provided, and when the storage switch (28) is operated, the horizontal screw conveyor (9) is automatically stored and the storage switch (28) is operated. 2. The combine grain discharging apparatus according to claim 1, further comprising a control means (27) for automatically driving the reverse rotation drive mechanism (18) until a set time elapses after the operation.