JP3596990B2 - Grain discharging equipment in combine harvesters - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain discharge device in a combine configured to discharge grains of a Glen tank via a vertical transport conveyor and a telescopic horizontal transport conveyor provided at an upper portion of the vertical transport conveyor.
[0002]
[Prior art]
Conventionally, a telescopic horizontal conveyor linked to an upper part of a vertical conveyor is configured to be able to integrally drive a base side conveyor and a front side conveyor as shown in Japanese Utility Model Laid-Open No. 2-120134. I have. In other words, at the top of the distal side of the distal side horizontal screw conveyor arranged below the proximal side horizontal screw conveyor, an inner and outer double spline shaft , one end of which is interlocked and connected to the proximal horizontal screw conveyor, is provided. The other end of the spline 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]
[Problems to be solved by the invention]
The grain discharge device in the combine, since the horizontal conveyor is elastic, when transferring the grain of the Glen tank to the truck of the ridge, there is no need to perform fine positioning of the aircraft body to the truck By expanding and contracting the horizontal conveyor, there is an advantage that the grains in the tank can be easily transferred to the truck.However, the front-end conveyor in the horizontal conveyor has a double telescopic shaft and a bevel gear shaft. In the above-described conventional structure to be driven, the driving structure for the front-end side conveyor is complicated.
Also, when transferring the grains to the truck, if the loading of the truck is full and the discharge of the grains is interrupted, the grains 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 grain spilling 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 operation is resumed. There was room for improvement.
[0004]
An object of the present invention is to solve the above-mentioned drawbacks by devising a driving structure of the horizontal conveyor.
[0005]
[Means for Solving the Problems]
The present invention according to claim 1 is a grain discharge in a combine configured to discharge the grains of the Glen tank through a vertical transport conveyor and an extendable horizontal transport conveyor that is operatively connected to an upper portion of the vertical transport conveyor. In the device,
The horizontal transport conveyor, a proximal horizontal screw conveyor driven to transfer the kernels from the vertical transport conveyor, and a direction in which the kernels receive the kernels from the proximal horizontal screw conveyor and move away from the vertical transport conveyor. And the leading side horizontal screw conveyor is driven to be conveyed to the conveying side length of the side conveying conveyor by relatively moving the leading side horizontal screw conveyor along the longitudinal direction of the base side lateral screw conveyor. It is configured to be able to change the expansion and contraction freely,
A dedicated driving device capable of independently driving / stopping the leading side conveyor in the horizontal transport conveyor is provided, and the dedicated driving device is stopped after a fixed time of the drive stop of the horizontal transport conveyor driving device , and further rotated for a predetermined time. Driving stop delay means is provided.
[Action]
According to this configuration, the front-end conveyor in the horizontal conveyor is stopped after a certain period of time after the base-end conveyor is stopped, so that the grains in the cylindrical case in the front-end conveyor are externally moved by the conveyor. And the kernels do not remain in the cylindrical case on the front side conveyor.
In addition, according to this configuration, after the base-side conveyor is stopped, by driving the exclusive driving device for the front-end side conveyor in reverse, the grains in the cylindrical case in the front-end side conveyor are moved to the back side inside the cylindrical case. Can be moved.
[0006]
〔effect〕
According to the invention according to claim 1, when the grain transfer operation is temporarily interrupted and the mowing operation is resumed, even if the machine body is tilted forward when unevenness of the field or over a ridge, the cylindrical case on the front side conveyor. Since no grains remain inside, the grains do not overflow from the outlet at the tip of the cylindrical case.
Also, even if some kernels remain in the cylindrical case on the front side conveyor, since the kernels are moved to the rear side of the cylindrical case on the front side conveyor, the discharge port at the front end of the cylindrical case Can prevent the grains from overflowing.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows the entirety of a combine. The combine is connected to a front part of a body frame 2 provided with a crawler traveling device 1 so as to be able to ascend and descend to a cutting pre-processing device 3. A threshing device 4 is mounted on a frame, and a control unit 5 and a driving unit 6 are provided on the right rear of the pre-cutting device 3. A Glen tank 7 is provided on the right side of the threshing device 4 behind the driving unit 6. Has been deployed. 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.
[0008]
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 body, and is capable of moving the grains in the tank with a vertical screw conveyor 10 serving as a vertical transport conveyor provided at the rear of the tank and a telescopic horizontal transport conveyor. And a horizontal screw conveyer 11 as a unit, and can be discharged outside the machine through a grain discharge device A.
[0009]
The bottom screw 7a of the Glen tank 7 is configured to be able to be driven and stopped via a belt transmission (tank clutch) (not shown) of a belt tension clutch type driven by an engine 8. At the end of the vertical screw conveyor 10 is connected via a bevel gear case 14 having a bevel gear mechanism therein, and the upper portion of the vertical screw conveyor 10 is connected via a connection case 15 having a bevel gear mechanism therein with the horizontal screw conveyor. A conveyor 11 is connected, and the bottom screw 7a, the vertical screw conveyor 10 and the horizontal screw conveyor 11 can be driven / stopped by turning on / off the tank clutch as a horizontal conveyor driving device.
[0010]
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 attached to the vertical cylinder case 10a of the vertical screw conveyor 10 so as to be rotatable around the vertical axis Y, and the ring gear 16 fixed to the connection case 15 and the ring gear 16 fixed to the vertical cylinder case 10a. The connection case 15 is configured to be pivotable via an electric motor 17 . Then, the horizontal cylinder case 11a of the horizontal screw conveyor 11 connected to the connection case 15 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. The swing arm 18 and the hydraulic cylinder 19 spanning the connection case 15 are configured to be vertically swingable.
[0011]
As shown in FIG. 2, the horizontal screw conveyor 11 is composed of a proximal horizontal screw conveyor 11A and a distal horizontal screw conveyor 11B. The horizontal screw conveyor 11 has a horizontal cylindrical case 11a of the proximal horizontal screw conveyor 11A. A horizontal cylinder case 11b of the distal horizontal screw conveyor 11B is slidably fitted to the outside, and a forward / reversely rotatable electric motor M1 having a screw shaft 20 is mounted on the upper surface of the proximal horizontal cylinder case 11a. A bracket 21 screwed to the screw shaft 20 is provided on the upper surface of the screw shaft 20, and the distal side horizontal screw conveyor 11 </ b> B is configured to be able to expand and contract with the proximal horizontal screw conveyor 11 </ b> A with the rotation of the screw shaft 20. . 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 tip side horizontal screw conveyor 11B can be driven independently of the base end side horizontal screw conveyor 11A, and can be driven to rotate the screw shaft of the tip side horizontal screw conveyor 11B on the rear end surface of the horizontal cylinder case 11b. A reverse rotation electric motor M2 is provided. A limit switch Sa for detecting an extension limit of the tip side horizontal screw conveyor 11B and a limit switch Sb for detecting a contraction limit are provided on the bracket 21 of the tip side horizontal cylinder case 11b.
[0012]
The steering unit 5 includes an expansion / contraction operation lever 24 for driving an electric motor M1 for driving the expansion and contraction of the distal side horizontal screw conveyor 11B, and a tank for operating an electric motor M2 for driving and stopping the driving of the distal side horizontal screw conveyor 11B. A clutch operation lever 25 is provided.
[0013]
Next, the control of the electric motor M1 for driving the front-end side horizontal screw conveyor 11B to expand and contract and the electric motor M2 for driving / stopping the front-end side horizontal screw conveyor 11B will be described.
[0014]
At the base end of the telescopic operation lever 24, there is provided a rotary switch S1 for detecting the direction of the telescopic operation of the telescopic operation lever 24, and at the base end of the tank clutch operation lever 25, the on / off of the tank clutch operation lever 25 is set. Limit switches S2 and S3 for detection are provided, and signals from these switches S1, S2 and S3 are input to a control device 26 using a microcomputer.
[0015]
The control device 26 is provided with stop delay means H for stopping the front-end side horizontal screw conveyor 11B after a lapse of a predetermined time after the tank clutch is disengaged.
[0016]
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 controls the electric motor M1. To rotate the front side horizontal screw conveyor 11B with respect to the base side horizontal screw conveyor 11A, and stop the electric motor M1 when the front side horizontal screw conveyor 11B comes into contact with the limit switch Sa which detects the expansion limit. Is done. Signal contact S1b of the telescopic lever 24 Rotary switch S1 is operated in the contracting side is input to the control unit 26, the electric motor M1 reversely driven to contract the distal end side lateral screw conveyor 11B by the output signal from the control unit 26 When the tip side lateral screw conveyor 11B comes into contact with the limit switch Sb for detecting the contraction limit, the electric motor M1 is stopped.
[0017]
Next, the control of the electric motor M2 for driving the front side horizontal screw conveyor will be described. When the switch S2 detects that the tank clutch operation lever 25 has been engaged and operated, the front side horizontal screw is controlled via the control device 26. When the switch S3 detects that the electric motor M2 of the conveyor 11B is driven to rotate forward and the tank clutch operating lever 25 has been disengaged, the stop delay means H of the control device 26 turns off the front side horizontal screw conveyor 11B after a predetermined time. The electric motor M2 is stopped, and is further driven for reverse rotation for a certain period of 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 after the lapse of the fixed time.
[0018]
[Another Embodiment] In the above embodiment, when the switch S3 detects that the tank clutch operation lever 25 has been disengaged, the stop delay means H of the control device 26 causes the stop screw H of the tip side lateral screw conveyor 11B to move after a predetermined time. Although the electric motor M2 is stopped and the motor is driven in reverse for a certain period of time, the switch S3 detects that the tank clutch operating lever 25 has been disengaged. The electric motor M2 of the tip side horizontal screw conveyor 11B may be simply stopped.
[0019]
Further, in the embodiment, after the base end side conveyor in the horizontal conveyor is stopped, the front end side conveyor is stopped after a certain period of time, and the grains in the cylindrical case in the front end side conveyor are discharged. As shown in FIG. 5 , a dedicated operation lever 27 for the electric motor M2 and a rotary switch S4 for detecting the operation direction of the operation lever 27 are provided, as shown in FIG. After the cutting operation, the operating lever 27 drives the electric motor M2 in the reverse direction to position the grains in the cylindrical case in the front end conveyor on the inner side of the cylindrical case, thereby preventing overflow of the grains during work. You may do it.
[0020]
Further, in the above-described embodiment, the proximal side horizontal screw conveyor 11A in the horizontal screw conveyor 11 is connected to the vertical screw conveyor 10 so as to be able to be driven / stopped by turning on / off the tank clutch. A dedicated electric motor for the conveyor 11A may be provided so that the proximal 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 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. Description】
7 grain tank 10 vertical conveyor 11 horizontal conveyor 11B tip side Con Bear
H stop delay means M2 Tip side conveyor drive unit

Claims (1)

In the grain discharge device in the combine which is configured to discharge the grain of the Glen tank through the vertical transport conveyor and the horizontal transport conveyor linked to the upper part of the vertical transport conveyor,
The horizontal transport conveyor, a proximal side horizontal screw conveyor driven to transfer the kernels from the vertical transport conveyor and a direction in which the kernels receive the kernels from the proximal side horizontal screw conveyor and move away from the vertical transport conveyor. And the leading side horizontal screw conveyor is driven to be conveyed to the conveying side length of the side conveying conveyor by relatively moving the leading side horizontal screw conveyor along the longitudinal direction of the base side lateral screw conveyor. It is configured to be able to change the expansion and contraction freely,
A dedicated driving device capable of independently driving / stopping the front-end side horizontal screw conveyor in the horizontal conveying conveyor is provided, and the dedicated driving device is stopped after a fixed time of driving stop of the horizontal conveying conveyor driving device , and further fixed. A grain discharging device in a combine provided with stop delay means for driving in reverse rotation over time .

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