JPH0630650A - Combine grain discharging device - Google Patents

Abstract

(57) [Summary] [Purpose] A horizontal feed screw conveyor is provided at the inner bottom of the Glen tank that stores dehusked grains, and a vertical feed screw conveyor that lifts grains from the horizontal feed screw conveyor is provided. Also, in a combine in which a transmission system to the vertical feed screw conveyor is provided with a clutch that can be manually operated, it is possible to reliably prevent clogging of grains due to activation of the screw conveyor. [Structure] Sensor 2 for detecting the rotation speed of engine 3
1, the clutch 19 is provided only when the detected rotation speed is in the set low speed range based on the information from the sensor 21.
A restraint means is provided for permitting the lateral feed screw 12 and the vertical feed screw conveyor 13 to be activated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw type grain discharging device mainly for a large combine equipped with an engine having a large output.

[0002]

2. Description of the Related Art Conventionally, as shown in, for example, Japanese Utility Model Laid-Open No. 4-30830, the above-mentioned grain discharging device has a vertical feed screw for feeding grain from a horizontal feed screw provided in an inner bottom portion of a Glen tank. A conveyor is provided, and a manually operable clutch is installed in the transmission system from the engine to the horizontal feed screw and vertical feed screw conveyor so that the horizontal feed screw and vertical feed screw conveyor can be started by operating the clutch arbitrarily. Was configured into.

[0003]

In the above configuration,
The clutch may be operated while the accelerator is set to the high-speed rotation state and the horizontal feed screw and the vertical feed screw conveyor may be activated, which causes the stored grains to be rapidly conveyed, and Occasionally, clogging or grain damage may occur depending on the wetness and properties. This phenomenon tends to occur particularly in a large combine with a large engine output. An object of the present invention is to make it possible to reliably prevent troubles such as clogging of grain due to sudden activation of the grain discharging device.

[0004]

A feature of the present invention is that a horizontal feed screw is provided at an inner bottom portion of a grain tank for storing threshing grains, and a vertical feed screw conveyor is provided for feeding grains from the horizontal feed screw. In a combine that has a manually operated clutch in the transmission system from the engine to the horizontal feed screw and the vertical feed screw conveyor, a sensor that detects the engine speed is provided, and the detected rotation speed is based on the information from the sensor. This is because the restraint means is provided to allow the transverse feed screw and the longitudinal feed screw conveyor to be activated by the clutch only in the set low speed range.

[0005]

In other words, the action of the sensor and the restraining means allows the transverse feed screw and the longitudinal feed screw conveyor to be activated by the clutch operation only when the engine is in the low speed rotation state. Also, the vertical feed screw conveyor cannot be started.

[0006]

As a result, it is possible to reliably prevent an inconvenient situation in which the transverse feeding screw and the longitudinal feeding screw conveyor are mistakenly activated at the time of high-speed rotation of the engine, and troubles such as grain clogging caused by the abrupt start of conveyance occur. Thus, it was possible to provide a combine grain discharging device having a further excellent grain discharging performance.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a mowing pretreatment device 1 is provided at a front portion of a traveling vehicle traveling on a crawler type traveling device 7 so that it can be freely moved up and down, and a grain culm from the mowing pretreatment device 1 is threshed and shredded. Axial flow type threshing device 2 for sorting and threshing device 2
The grain tank 4 for collecting the No. 1 product from No. 1 and the operation cabin 6 are mounted on the traveling vehicle body, and the unloader 5 for taking out the stored grains is mounted on the Glen tank 4 to provide the whole culm-type combine harvester. Configured. Driven and rotatable auger 1 that collects reel 8, cutting blade 9 and harvested culm on the starting end of feeder 10 for reaping pretreatment device 1
1 and the like are provided to supply the grain culm from the feeder 10 to the threshing device 2.

To form the unloader 5, as shown in FIG. 2, the transverse feed screw 12 is provided on the inner bottom of the Glen tank 4.
Is provided with a vertical feed screw conveyor 13 for lifting the grains from the horizontal feed screw 12, and a screw conveyor type discharge cylinder 14 for discharging the grains from the vertical feed screw conveyor 13 can be freely driven by a hydraulic motor 15. The discharge cylinder 14 is mounted by a hydraulic cylinder 16 so as to be vertically swingable and rotatable about an axis of a vertical axis by an electric motor 17 so that the grains from the discharge cylinder 14 can be loaded into a transport vehicle outside the machine. There is. A hydrostatic continuously variable transmission 18 is provided in the transmission system of the engine 3 and the traveling device 7, and the horizontal feed screw 12 and the vertical feed screw conveyor 13 are connected to the engine 3
From the set position of the accelerator lever 22 that is provided with a tension type clutch 19 and an electromagnetic clutch 20 that can be turned on and off by an operating tool 19a, and a speed control mechanism 3a included in the engine 3 is set and fixed at an arbitrary speed in a transmission system that is linked to A sensor 21 for detecting the rotation speed of the engine 3 is provided, and the electromagnetic clutch 20 is engaged and operated only when the detected rotation speed is within the set low speed range based on the information from the sensor 21, and the lateral feed by the tension clutch 19 is performed. The automatic operation means 23 that allows driving of the screw 12 and the vertical feed screw conveyor 13 is provided, and the horizontal feed screw 12 and the vertical feed screw conveyor 13 are erroneously activated when the engine 3 rotates at high speed, and rapid conveyance is started. To be able to reliably prevent inconvenient situations where troubles such as grain clogging occur Configure and Aru. Accelerator lever 22
And the shift lever 24 of the hydrostatic stepless transmission 18 are relatively arranged so that the accelerator lever 22 is operated in contact with the operation of the shift lever 24.
When the shift lever 24 is operated to the high speed operation state in the low speed operation state, the accelerator lever 22 is operated to the medium speed operation state to prevent the engine 3 from being stopped due to an increase in load.

As shown in FIG. 3, the flat windshield 25 in the operating cabin 6 is pressed by the tightening bolts 26 and the cushion rubber 27 which are screwed to the main body of the cabin to suppress the noise generation due to the vibration of the windshield 25. In addition, the lip of the seal 29 attached to the cabin body is pressed against the cooler 28 inserted into the opening of the ceiling to prevent rain leakage.

[Embodiment 1] As shown in FIG. 4, the electromagnetic clutch 20 includes a clutch operating member 19a and a clutch 1.
9 is intervened in a linkage mechanism for mechanically connecting 9 and the sensor 2
The electromagnetic clutch 20 is engaged and operated only when the engine speed is within the set low speed range based on the information from 1.
The clutch 19 can be engaged and operated by the operation tool 19a, so that the lateral feed screw 12 and the vertical feed screw conveyor 13 are mistakenly activated when the engine 3 rotates at a high speed, and abrupt conveyance is started to cause grain clogging. It can also be configured to surely prevent an inconvenient situation in which a trouble occurs.

[Second Embodiment] As shown in FIG. 5, a second sensor 30 for detecting the operation state of the clutch operation tool 19a with respect to the horizontal feed screw 12 and the vertical feed screw conveyor 13 is provided. First limit switch 3 for detecting low speed operation
1. A second limit switch 32 for detecting that the accelerator lever 22 is in a high speed operation state is provided, and a push rod 33 for operating the accelerator lever 22 from a low speed operation state to a high speed operation state is screwed back and forth by an electric motor 34. The push rod 3 is freely provided and is based on information from the second sensor 30, the first limit switch 31, and the second limit switch 32.
When the clutch operating tool 19a is turned on while the accelerator lever 22 is in the low-speed operation state, the push rod 33 is projected by the speed increasing means 35. Then, the accelerator lever 22 is automatically operated by the push rod 33 into a high-speed operation state, and then the push rod 33 is retracted by the speed increasing means 35.
Problems such as clogging of the screw conveyors 12 and 13 can be prevented, and the operation of the accelerator lever 22 at the time of discharging the grain may be unnecessary.

The type of the clutch 19 for manually operating the horizontal and vertical feed screw conveyors 12 and 13 can be appropriately selected. Further, the type of the sensor 21 that detects the rotation speed of the engine 3 can be changed appropriately. Further, a specific configuration for allowing the starting of the lateral feed screw 12 and the vertical feed screw conveyor 13 by the clutch 19 only when the detected rotation speed is in the set low speed range based on the information from the sensor 21 is, for example, a clutch operation. It is possible to use a device that uses a stopper that blocks the operation of entering the tool 19a, a control device that restricts the operation of the manually operated electromagnetic clutch 19 and the like, and these are collectively referred to as a restraining device.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

1] Overall side view of combine

FIG. 2 is a configuration diagram of an unloader drive mechanism and an operation mechanism.

FIG. 3 is a partial sectional view of a driving cabin.

FIG. 4 is a configuration diagram showing another embodiment of an unloader drive mechanism and an operation mechanism.

FIG. 5 is a configuration diagram showing yet another embodiment of an unloader drive mechanism and an operation mechanism.

[Explanation of symbols]

 3 Engine 4 Glen Tank 12 Horizontal Feed Screw Conveyor 13 Vertical Feed Screw Conveyor 19 Clutch 21 Sensor

Claims (1)

[Claims] 1. A lateral feed screw (12) is provided at an inner bottom portion of the Glen tank (4), and the lateral feed screw (1) is provided.
Provided with a vertical feed screw conveyor (13) for lifting grains from 2), and a clutch which can be manually operated in a transmission system from the engine (3) to the horizontal feed screw (12) and the vertical feed screw conveyor (13). In a combine having (19), a sensor (2) for detecting a rotation speed of the engine (3).
1) is provided, and the transverse feed screw (12) and the vertical feed screw conveyor (13) by the clutch (19) are provided only when the detected rotation speed is in the set low speed range based on the information from the sensor (21). A combine grain discharging device provided with a restraining means for permitting activation.