JPH0233652Y2 - - Google Patents

Description

[Detailed explanation of the idea]

Purpose of the invention The purpose of the invention is to automatically open and close the dust feed valve of a threshing machine using a self-handling sensor. Composition of the invention The invention provides an operating lever electric device 3 for opening and closing the dust feeding valve 1 of the threshing machine by motor drive,
The operating lever electric device 3 is configured to be driven in conjunction with the self-handling sensor. Effect of the invention Based on the operating status of the self-handling sensor, the CPU determines deep handling, normal handling, and shallow handling, changes the control signal to the operating lever electric device, controls the rotation of the motor, and controls the operating lever of the dust supply valve. is automatically operated in conjunction with the operation of the own handling sensor. Embodiment Referring to FIGS. 1 to 4, 1 is a dust feeding valve, 2 is
3 is a dust feeding valve operating lever, 3 is an operating lever electric device, and the operating lever electric device 3 has a helical coil 6 fixed to a rotating shaft 5 driven by a motor 4,
The dust feeding valve operating lever 2 is engaged with the helical coil 6. The dust feeding valve 1 is pivotally supported by a support shaft 9 that hangs down from the handling barrel cover 7 of the threshing machine 8, and is rotatable between an open position α and a closed position γ. The dust feeding valve operating lever 2 has its base pivotally supported on the handling barrel cover 7 by a shaft 10 on the upper surface of the handling barrel cover 7.
A fork portion 12 is formed at the extended end, and a protrusion 11 projecting upward from the dust feed valve 1 is engaged with the fork portion 12, and the grip portion 2 of the dust feed valve operating lever 2 is secured to the fork portion 12.
The positions of α', β', γ' of
Configure it to correspond to the position of. Referring to FIG. 2, the self-handling sensors are installed near the grain culm supply port 13 of the threshing machine, and 15L is the self-handling sensor L, 15M is the self-handling sensor M, and 15H is the self-handling sensor H. Based on the operation of each sensor, the self-handling controller 18 determines whether the culm is short, standard, or long as shown in the table below, and the self-handling drive mechanism 16 is controlled to adjust the handling depth.

[Table] The above self-handling sensors L, M, H, 15L, 15
Using the detection effect of M, 15H, the dust feeding valve 1
Based on the program of the microcomputer (CPU) 14 shown in FIG. 4, the rotation of the motor 4 is controlled as shown in the table below. For example, if motor 4 is a servo DC motor [pulse motor],
The voltage (pulse) supplied from the servo circuit 17 to the servo DC motor (pulse motor) is positive or negative, and its value is controlled by a control signal from the microcomputer 14.

[Table] Therefore, in the state of category A, the harvested grain culm is located near the feed chain of the handling room and is handled shallowly, resulting in a small amount of threshing, and the amount of dust discharged in the handling room is also small. At this time, the dust feeding valve 1 is closer to the closed position γ, making it difficult for the dust to be sent to the outlet side of the handling barrel (the residence time in the handling chamber becomes longer). In the state of classification B, the amount of threshing is standard and the amount of dust discharged in the handling chamber is also standard, the dust feed valve 1 is located near the standard position β, and dust is fed appropriately. In the state of classification C, the tips of the harvested grain culms reach the back of the handling room, and the amount of threshing is large, so the amount of dust generated is necessarily large. At this time, the dust feeding valve 1 is closer to the open position α, and the dust is easily sent to the outlet side of the handling cylinder (there is no stagnation in the handling chamber). That is, the operating angle of the dust feeding valve is changed in accordance with the increase or decrease of the dust in the handling chamber, and the dust discharge speed is automatically adjusted. Although the operation of the present invention in automatic handling depth control (self-handling operation) has been described above, the present invention can also be applied when manually controlling the handling depth.
Even when the self-handling switch (not shown) is turned off and the self-handling controller 18 stops operating, the self-handling sensors 15L, 15M, and 15H operate and send detection signals to C.
Since the dust is sent to the P.U. 14, the purpose of the present invention can be achieved by opening and closing the dust sending valve 1 depending on the threshing state (deep handling, shallow handling). Note that the switch 19 can be connected to the CPU to stop the operation of the operating lever electric device 3 and to arbitrarily switch to manual operation of the dust feeding valve operating lever 2. Effects of the invention Based on the operation of the own handling sensor, the CPU determines deep handling, normal handling, and shallow handling, detects an increase or decrease in the amount of dust in the handling chamber, and automatically opens and closes the dust feed valve. The sorting function can always be maintained in the best condition. In addition, there is an effect that the self-handling sensor can also be used as a means for detecting the amount of discharged dust.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the main parts of an automatic control device for a dust feeding valve showing an embodiment of the present invention. FIG. 2 is a perspective view of the combine harvester. FIG. 3 is a plan view of the automatic control mechanism of the dust sending valve. FIG. 4 is also a longitudinal sectional view. FIG. 5 is an electrical circuit diagram. 1... Dust feeding valve, 2... Dust feeding valve operating lever, 3...
...Operation lever electric device.

Claims (1)

[Scope of utility model registration request] A control lever electric device 3 for opening and closing a dust feeding valve 1 of a thresher by motor drive is provided, and the control lever electric device 3 is configured to be driven in conjunction with a self-handling sensor. Dust valve automatic control device.