JPH10113055A - Grain discharge device in combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress grains from overflowing and falling from a discharge port at the tip of a horizontal carrying conveyor when grain discharge is interrupted in a grain discharge device in a combine constituted so as to discharge the grains of a grain tank through a vertical carrying conveyor and the freely extendible and contractible horizontal carrying conveyor linked and connected to the upper part of the vertical carrying conveyor. SOLUTION: A dedicated driving device M2 capable of singly driving and stopping a tip side conveyor in the horizontal carrying conveyor is provided and a stoppage delay means H for stopping the dedicated driving device M2 fixed time after the driving stoppage of a horizontal carrying conveyor driving device is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain discharge in a combine configured to discharge grains in a Glen tank via a vertical conveyor and a telescopic horizontal conveyor provided at the top of the vertical conveyor. Related to the device.

[0002]

2. Description of the Related Art Conventionally, a telescopic horizontal conveyer linked to an upper part of a vertical conveyer has been disclosed in Japanese Patent Laid-Open No. 2-120.
As shown in Japanese Patent Publication No. 134, the base end side conveyor and the front end side conveyor can be integrally driven. In other words, at the top of the distal side of the distal side horizontal screw conveyor arranged at the lower part of the proximal side horizontal screw conveyor, an inner and outer double splice shaft, one end of which is interlocked and connected to the proximal side horizontal screw conveyor, is provided. The other end of the splice shaft and the distal end of the screw shaft of the distal side horizontal screw conveyor are interlocked and connected via a bevel gear shaft so that the proximal side horizontal screw conveyor and the distal side horizontal screw conveyor can be integrally driven. is there.

[0003]

In the above-described grain discharging device in the combine, since the horizontal transport conveyor is extendable and retractable, when transferring the grain in the Glen tank to the truck in the row, the body of the machine is moved relative to the truck. It is not necessary to perform fine positioning, and by expanding and contracting the horizontal conveyor, the grain in the tank can be easily transferred to the truck, but it has the advantage of using the inner and outer double telescopic shaft and bevel gear shaft. In the above-described conventional structure in which the leading side conveyor of the horizontal conveyor is driven, the driving structure for the leading side conveyor becomes complicated. Also, when transferring the grains to the truck, if the loading of the truck becomes full and the discharge of the grains is interrupted, the grains will remain in the cylinder case of the front end conveyor, and the time until the next truck comes If the harvesting operation is resumed using the waiting time, there may be inconveniences such as kernels overflowing from the discharge port at the tip of the cylindrical case if the aircraft leans forward when moving over to the ridges when moving to the next field, when the harvesting work is resumed There was room for improvement.

An object of the present invention is to solve the above-mentioned drawbacks by devising a drive structure of a horizontal transport conveyor.

[0005]

SUMMARY OF THE INVENTION According to the present invention, the grain of a Glen tank is discharged through a vertical transport conveyor and a telescopic horizontal transport conveyor interlockingly connected to an upper portion of the vertical transport conveyor. In the configured grain discharge device in the combine, a dedicated driving device capable of driving / stopping the tip side conveyor alone in the horizontal transport conveyor is provided, and this dedicated driving device is provided as the horizontal transport conveyor driving device. Stop delay means for stopping the drive after a predetermined time has been provided. [Operation] According to this configuration, the front-end conveyor in the horizontal conveyor is stopped after a predetermined time from when the base-end conveyor is stopped, so that the grains in the cylindrical case in the front-end conveyor are conveyed. As a result, the particles are discharged outside the machine, and the kernels do not remain in the cylindrical case of the front end conveyor. [Effect] According to the invention according to claim 1, when the grain transfer work is temporarily interrupted and the mowing work is resumed, even if the machine body leans forward when unevenness of the field or over the ridges, the tip side conveyor Since no kernel remains in the cylindrical case in the above, the kernel does not overflow from the discharge port at the tip of the cylindrical case.

According to a second aspect of the present invention, there is provided a combine which is configured to discharge the grains of the Glen tank via a vertical conveyor and a telescopic horizontal conveyor which is operatively connected to an upper portion of the vertical conveyor. In the grain discharging device, a dedicated driving device capable of independently driving / stopping the leading end side conveyor in the horizontal conveyor is provided, and the dedicated driving device is configured to be able to be driven in reverse rotation. [Operation] According to this configuration, after the base side conveyor is stopped, by driving the dedicated driving device for the front side conveyor in reverse, the grains in the cylindrical case at the front side conveyor are moved to the rear side inside the cylindrical case. Can be moved. [Effect] According to the invention of claim 2, when the grain transfer work is temporarily interrupted and the mowing work is resumed, even if the machine body leans forward when unevenness of the field or over the ridges, the tip side conveyor Since the grain has been moved to the back side of the cylindrical case in
Grain can be prevented from overflowing from the discharge port at the tip of the cylindrical case.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the entirety of a combine. This combine has a cutting pre-processing device 3 connected to the front of a body frame 2 equipped with a crawler traveling device 1 so as to be able to move up and down. The threshing device 4 is mounted on the body frame on the left rear side of the device 3, and the maneuvering unit 5 and the driving unit 6 are provided on the right rear of the pre-cutting device 3, and the right side of the threshing device 4 behind the driving unit 6. A Glen tank 7 is provided on the side. The driver's seat 5a in the control unit 5 is disposed above an engine hood 9 that covers a driving unit such as the engine 8.

The Glen tank 7 is provided with a bottom screw 7a at the bottom of the tank for transporting grains to the rear of the machine, and is capable of expanding and contracting grains in the tank with a vertical screw conveyor 10 as a vertical transport conveyor provided at the rear of the tank. It is configured to be able to be discharged outside the machine via a grain discharge device A including a horizontal screw conveyor 11 as a horizontal transport conveyor.

The bottom screw 7a of the Glen tank 7
Is configured to be able to be driven / stopped via a belt transmission device (tank clutch) 12 of a belt tension clutch type driven by an engine 8. The terminal of the bottom screw 7 a is connected to the vertical screw conveyor 10.
Are connected via a bevel gear case 13 having a bevel gear mechanism inside, and the vertical screw conveyor 10
The horizontal screw conveyor 11 is connected via a connection case 14 having a bevel gear mechanism inside, and the bottom screw 7a, the vertical screw conveyor 10, and the horizontal screw are connected by turning on and off the tank clutch 12 as a horizontal transport conveyor driving device. Conveyor 11 is driven
The drive can be stopped.

The horizontal screw conveyor 11 is configured to be rotatable around the vertical axis Y with respect to the vertical screw conveyor 10 and to be able to swing up and down around the horizontal axis X. That is, the connection case 14 is rotatably mounted around the vertical axis Y with respect to the vertical cylinder case 10a of the vertical screw conveyor 10, and the ring gear 15 fixed to the connection case 14 and the ring gear 15 fixed to the vertical cylinder case 10a. Electric motor 16
The connection case 14 is configured to be able to pivot via the. Then, the horizontal cylinder case 11a of the horizontal screw conveyor 11 connected to the connection case 14 so as to swing vertically about the horizontal axis X is vertically swung about the horizontal axis X integrally with the horizontal cylinder case 11a. Swing arm 17 and connecting case 14
And a hydraulic cylinder 18 erected between them.

As shown in FIG. 2, the horizontal screw conveyor 11 comprises a base side horizontal screw conveyor 11A and a front side horizontal screw conveyor 11B.
Horizontal cylinder case 11a of proximal side horizontal screw conveyor 11A
A horizontal cylinder case 11b of the distal side horizontal screw conveyor 11B is slidably fitted to the outside, and a forward / reverse rotatable electric motor M1 having a screw shaft 20 is mounted on the upper surface of the proximal side horizontal cylinder case 11a. A bracket 21 that is screwed onto the screw shaft 20 is provided on the upper surface of the horizontal cylinder case 11b.
1B is configured to be extendable and retractable with respect to the proximal side horizontal screw conveyor 11A. A communication port 22 that communicates with the distal-side horizontal screw conveyor 11B is formed at the distal end of the proximal-side horizontal cylindrical case 11a, and a grain is formed on the distal-side lower surface of the horizontal cylindrical case 11b of the distal-side horizontal screw conveyor 11B. A discharge port 23 is provided. The distal-side horizontal screw conveyor 11B can be driven independently of the proximal-side horizontal screw conveyor 11A, and can be driven to rotate the screw shaft of the distal-side horizontal screw conveyor 11B on the rear end surface of the horizontal cylindrical case 11b. A reverse rotation electric motor M2 is provided. A limit switch Sa for detecting an extension limit and a limit switch Sb for detecting a contraction limit of the distal-side horizontal screw conveyor 11B are provided on the bracket 21 of the distal-side horizontal cylinder case 11b.

The control unit 5 includes an extension lever 24 for driving an electric motor M1 for driving the extension and retraction of the tip side horizontal screw conveyor 11B, and an operation of an electric motor M2 for driving and stopping the driving of the tip side horizontal screw conveyor 11B. Tank operating lever 25 is provided.

Next, the tip side horizontal screw conveyor 1
The control of the electric motor M1 for driving the expansion and contraction of the electric screw 1B and the electric motor M2 for driving and stopping the driving of the tip side lateral screw conveyor 11B will be described.

At the base end of the telescopic operation lever 24, a rotary switch S1 for detecting the telescopic operation direction of the telescopic operation lever 24 is provided.
5 are provided at the base end thereof with limit switches S2 and S3 for detecting the on / off of the tank clutch operation lever 25,
The signals of these switches S1, S2, S3 are input to a control device 26 using a microcomputer.

The control device 26 is provided with stop delay means H for stopping the front-end side horizontal screw conveyor 11B after a certain period of time after the tank clutch 13 is disengaged.

The control of the telescopic electric motor M1 will be described. When the telescopic lever 24 is operated to the extension side, the signal of the contact S1a of the rotary switch S1 is input to the control device 26, and the output signal from the control device 26 The forward rotation of the electric motor M1 is performed by driving the electric motor M1 forward.
Is extended with respect to the proximal side horizontal screw conveyor 11A, and when the distal side horizontal screw conveyor 11B comes into contact with a limit switch Sa for detecting the extension limit, the electric motor M
1 is stopped. When the telescopic lever 24 is operated to the contraction side, the signal of the contact S1b of the rotary switch S1 is transmitted to the control device 26.
The electric motor M1 is driven in reverse by an output signal from the control device 26 to drive the front side screw conveyor 1
When the front side horizontal screw conveyor 11B comes into contact with the limit switch Sb for detecting the contraction limit, the electric motor M1 is stopped.

Next, the control of the electric motor M2 for driving the tip side lateral screw conveyor will be described. When the switch S2 detects that the tank clutch operating lever 25 has been engaged and operated, the tip end is controlled via the control device 26. When the switch S3 detects that the electric motor M2 of the side horizontal screw conveyor 11B is driven to rotate forward and the tank clutch operating lever 25 is turned off, the stop side delay means H of the control device 26 sets the front side horizontal screw after a predetermined time. The electric motor M2 of the conveyor 11B is stopped, and is further driven for reverse rotation for a certain time. The stop delay means H is programmed to count for a fixed time by a soft timer, and to output a reverse rotation signal to the electric motor M2 for a fixed time when a certain time has elapsed.

[Other Embodiment] In the above embodiment, when the switch S3 detects that the tank clutch operation lever 25 has been disengaged, the stop side delay means H of the control device 26 sets the lateral screw on the distal end after a predetermined time. The example in which the electric motor M2 of the conveyor 11B is stopped and the motor M2 is driven in the reverse direction for a certain period of time has been exemplified. However, when the switch S3 detects that the tank clutch operating lever 25 has been disengaged, the stop delay means H of the control device 26 operates. After a certain period of time, the electric motor M2 of the tip side horizontal screw conveyor 11B
May simply be stopped.

Further, in the embodiment, after the base end conveyor in the horizontal conveyor is stopped, the front end conveyor is stopped after a predetermined time, and the grains in the cylindrical case in the front end conveyor are discharged. The operation of the operating lever 27 and the operating lever 2 for the electric motor M2 is prevented as shown in FIG.
7 is provided with a rotary switch S4 for detecting the operation direction.
After the tank clutch operation lever 25 is disengaged, the electric motor M2 is reversely driven by the operation lever 27 to position the grains in the cylinder case on the front end side conveyor at the inner side of the cylinder case to perform the grain operation. The overflow of grains may be prevented.

Further, in the above-described embodiment, the horizontal screw conveyor 11A on the proximal end side of the horizontal screw conveyor 11 is connected to the vertical screw conveyor 10 so that the tank clutch 12 can be driven / stopped by turning on / off. An electric motor dedicated to the end side horizontal screw conveyor 11A may be provided so that the base end side horizontal screw conveyor 11A can be driven / stopped independently.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is a longitudinal sectional side view showing an expanded and contracted state of a horizontal screw conveyor.

FIG. 3 is a control block diagram.

FIG. 4 is a flowchart.

FIG. 5 is a control block diagram of another embodiment.

[Explanation of symbols]

 7 Glen Tank 10 Vertical Conveyor 11 Horizontal Conveyor 11B Tip Conveyor 12 Horizontal Conveyor Drive H Stop Delay Means M2 Tip Conveyor Drive

Claims (2)

[Claims] 1. A grain discharging device in a combine configured to discharge grains in a Glen tank through a vertical transport conveyor and an extendable horizontal transport conveyor interlocked with an upper portion of the vertical transport conveyor. A dedicated driving device capable of independently driving / stopping the leading-end conveyor of the transport conveyor is provided, and stop delay means for stopping the dedicated driving device after a predetermined time period of the drive stop of the horizontal transport conveyor driving device is provided. Grain discharging device in combine. 2. A grain discharging device in a combine configured to discharge grains of a Glen tank via a vertical transport conveyor and an extendable horizontal transport conveyor interlocked with an upper part of the vertical transport conveyor, A grain discharging device in a combine which is provided with a dedicated driving device capable of independently driving / stopping the front end side conveyor of the transport conveyor, and the dedicated driving device is configured to be able to be driven in reverse rotation.