JPH0585231U - Combined paddy tank shutter device - Google Patents

Abstract

(57) [Summary] [Purpose] The opening of the shutter above the paddy discharge spiral is controlled by using the paddy sensor provided in the paddy tank, and the paddy is damaged especially due to overload or overflow that tends to occur at the beginning of paddy discharge. Prevent. [Structure] The paddy discharge spiral 7 which is horizontally laid on the inner bottom of the paddy tank 5.
A shutter 17 whose opening degree can be automatically adjusted via a shutter driving means 18 is provided above the paddle, and a paddy sensor 12 for detecting at least the paddy amount at the paddy discharge is provided in the upper part of the paddy tank. 12 and the paddy discharge clutch operating unit 10 and the shutter driving means 18 are linked via the control unit 19, and when the paddy sensor 12 is ON and the paddy discharging clutch operating unit 10 is ON, the shutter 17 is more fully opened. The opening is small so that the opening is automatically controlled to an appropriate opening at the initial stage of paddy discharge.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shutter device for a paddy tank mounted on a combine.

[0002]

[Prior Art]

 In large combine harvesters, the capacity of the paddy tank installed in the aircraft is large, and the grain in the tank (hereinafter simply referred to as “hull”) is directly attached to the truck such as a truck by an exhaust pipe (auger) equipped on the aircraft. Many are designed to be discharged. With this type of equipment, when the paddy tank is full during operation (fullness is detected by the paddy sensor), the cutting operation is temporarily interrupted, the paddy discharge clutch is operated to the ON side, and the paddle is provided at the inner bottom of the paddy tank. The paddy discharge operation part such as the paddy discharge spiral is activated to discharge the paddy.

In such a combine, conventionally, a fixed type adjusting plate for adjusting the opening degree is provided in the paddy tank located above the paddy discharge spiral as necessary, or the paddy discharge is provided. It is known to provide a shutter that fully opens in conjunction with the ON operation of the clutch.

[0004]

[Problems to be solved by the device]

 However, with the fixed type adjustment plate, it is troublesome that a person enters the paddy tank to adjust the opening degree of the adjustment plate each time it is adjusted. Since the shutter opening is always constant (fully open) regardless of the amount of paddy, the weight of paddy in the tank is excessively applied to the paddy discharge spiral at the beginning of paddy discharge, resulting in an excessive load on the paddy discharge drive. There were problems such as damage to the paddy and damage to the paddy.

[0005]

[Means for Solving the Problems]

 The combine paddy tank shutter device according to the present invention is based on the above-mentioned actual condition, and is opened via the shutter driving means above the paddy discharge helix that is laid across the inner bottom of the paddy tank. A shutter that can automatically adjust the degree is provided, and a paddy sensor that detects at least the amount of paddy at the time of paddy discharge is provided in the upper part of the paddy tank, and the paddy sensor, paddy discharge clutch operation unit, and shutter drive means are controlled. When the paddy sensor is turned on and the paddy discharge clutch operating part is turned on, the shutter is automatically controlled to an appropriate opening at the initial stage of paddy discharge, which is smaller than the fully opened state. The main point is the composition.

[0006]

[Action]

 According to the present invention, when the paddy discharge work is started, the flow rate of the paddy to the paddy discharge spiral side can be automatically controlled to a state in which the paddy discharge is narrower than the fully opened state. Is prevented.

[0007]

【Example】

 The structure of the present invention will be described with reference to an embodiment shown in the drawings. 1 is a pretreatment unit, 2 is a driver's seat, and a threshing unit 4 and a paddy tank 5 are mounted on the left and right on a body frame 3 behind it. It is listed. The grains shredded in the threshing unit 4 are sorted and separated from straw waste and the like by a sorting unit (not shown), and then the husks are stored in the paddy tank 5 by the husk barrel 6. Reference numeral 7 denotes a paddy discharge spiral which is laid horizontally on the inner bottom of the paddy tank 5. The paddy discharge spiral 7 is connected to the upper end of the paddy discharge spiral 7 through a fixed spiral cylinder 8 standing upright at the rear of the machine body so as to be vertically rotatable and rotatable. The paddy discharging operation part such as the paddy discharging spiral 7 and the like is communicated with the movable spiral cylinder 9 and is started or closed by turning on or off the paddy discharging clutch operating part (paddy discharging clutch lever) 10 provided in the driver's seat 2. By stopping and entering the paddy, the paddy in the paddy tank 5 is discharged from the discharge port 9a to a truck (not shown) through the fixed spiral cylinder 8 and the movable spiral cylinder 9. A paddy discharge lever switch 10a is provided at an appropriate position of the machine body such as a mounting portion of the lever 10 in which a switch is turned on and off in association with an on / off (ON / OFF) operation of the paddy discharge clutch lever 10.

Reference numeral 11 denotes a paddy sensor mounted on the inner wall surface of the paddy tank 5 for detecting the amount of paddy. In the embodiment, three paddy sensors including an upper paddy sensor 12, a middle paddy sensor 13, and a lower paddy sensor 14 are vertically arranged. The one provided is illustrated, and the upper paddy sensor 12 is a sensor that detects the amount of paddy when the paddy is discharged (the amount of paddy when the paddy is full). A fulcrum shaft 15 is located above the paddy discharge spiral 7 and is rotatably supported in parallel to the paddy discharge spiral 7 by the paddy tank 5 via a bearing 16. The fulcrum shaft 15 controls the paddy flow rate. The shutter 17 for use is fixed. The opening of the shutter 17 can be automatically adjusted via the shutter drive means 18. The paddy sensors 12, 13 and 14 are linked with the shutter drive means 18 via a control unit 19 including a computer together with the lever switch 10a of the paddy discharge clutch lever 10.

Reference numeral 20 denotes a motor of a shutter drive means 18 fixed to an outer surface of the paddy tank 5, and a screw shaft 21 fixed to an output shaft 20a of the motor 20 is screwed to one end of an adjuster 22 so as to be able to move back and forth. The other end of the adjuster 22 is connected to the projecting end of the fulcrum shaft 15 via a fixed arm 23, a connecting pin 24, and a pin hole (not shown) with play, so that the motor 20 can rotate. Thus, the screw shaft 21 pushes and pulls the screw portion 22a provided on the adjuster 22, and the opening degree of the shutter 17 can be adjusted to an appropriate opening degree according to the amount of paddy in the tank 5 via the connecting pin 24 and the arm 23. It is like this. That is, when all the paddy sensors 12, 13, and 14 are turned on (full state), the shutter 17 is slightly opened from the fully closed state, and the shutters are sequentially turned off from the upper sensor due to the decrease in the amount of paddy. The program of the control unit 19 is set so that the opening degree of the valve 17 gradually increases and the sensor 14 at the lowest position is fully opened when the sensor 14 is turned off. When the paddy discharge clutch lever switch 10a is ON, the control of the shutter 17 is started, and when it is OFF, the shutter 17 is fully closed.

On the other hand, an opening detection sensor (potentiometer) 25 of the shutter 17 connected to the control unit 19 is fixed to the outer surface of the paddy tank 5, and a pin protruding from the boss portion 23 a of the arm 23 is provided. 26 transmits the rotation of the arm 23 to the potentiometer 25 to detect the opening of the shutter 17, and the controller 19 controls the motor 20 according to the ON / OFF of the paddy sensors 12, 13, 14 and the detected value of the potentiometer 25. It is designed to control rotation.

Reference numeral 27 denotes a tank fixed flow plate that is fixed to the paddy discharge spiral 7 and is located on the opposite side of the shutter 17, and a gap a is appropriately formed between the inclined lower end portion and the tank inner wall surface. Therefore, the paddy in the tank 5 is configured to flow little by little from the gap a to the paddy discharge spiral 7 side even when the shutter 17 is fully closed.

In this embodiment, three paddy sensors are provided in the upper and lower parts of the paddy tank 5, and the shutter opening is controlled according to the amount of paddy in the tank 5. Only the paddy sensor 12 that detects at least the paddy amount at the time of paddy discharge (paddy amount in a full state) may be provided in the upper part of the paddy tank 5. Further, the paddy sensor 12 can also be used as an existing sensor for full detection as a sensor for controlling the shutter opening. Further, the middle stage sensor 13 and the lower stage sensor 14 can be used respectively as a paddy amount detecting sensor. You can also

In the above structure, during the cutting operation, the paddy thrown into the paddy tank 5 gradually flows down to the paddy discharge spiral 7 side through the gap a provided at the lower end side of the fixed flow plate 27. Since the cutter 17 is held in the fully closed state, even if the amount of paddy in the tank 5 increases, the paddy discharge spiral 7 is not subjected to excessive paddy pressure. Now, when the paddy tank 5 becomes full, the movable spiral tube 9 is swung upward to set the proper discharging posture, and then the paddy discharge clutch lever 10 is operated to the entry side to start the paddy discharge work. The paddy discharging operation part such as the spiral 7 is activated to sequentially discharge the paddy in the tank. Since the lever switch 10a is turned on by the operation of entering the paddy discharging clutch lever 10, the control of the shutter 17 is started. .. At this time, since the paddy sensors 12, 13, 14 in the paddy tank 5 are pushed by the paddy and all are in the ON state, the control opening of the shutter 17 is small. Therefore, at the beginning of the paddy discharge work, the paddy pressure applied to the bottom of the tank is the maximum, but the flow rate of the paddy to the paddy discharge spiral 7 side is automatically adjusted to an appropriate opening at the initial stage of the paddy discharge, which is narrower than full opening. Since it is controlled dynamically, it is possible to prevent damage to the paddy due to overload or overflow that tends to occur at the beginning of paddy discharge.

By the way, when the amount of paddy in the tank 5 decreases due to the discharge of the paddy, the paddy sensors 12, 13, 14 are sequentially turned off from the upper side, and the opening degree of the shutter 17 becomes large (wide) each time. As the amount of unhulled rice in the tank 5 decreases, the unhulled flow rate toward the unhulled discharge spiral 7 increases. Therefore, there is no inconvenience that the discharge time is too long due to insufficient flow rate when the amount of remaining paddy is small, and the discharge required time is shortened.

[0015]

[Effect of the device]

 Since the present invention is configured as described above, when the paddy discharge work is started, the flow rate of the paddy to the paddy discharge spiral side can be automatically controlled to a state in which the flow rate of the paddy is narrower than when it is fully opened. It is possible to prevent the paddy from being damaged due to overflow.

[Brief description of drawings]

FIG. 1 is a side view of a combine equipped with the present invention.

FIG. 2 is a front view of a main part.

FIG. 3 is a sectional side view of a main part.

FIG. 4 is a control circuit diagram of a shutter.

[Explanation of symbols]

 5 Paddy Tank 7 Paddy Discharging Spiral 10 Paddy Discharging Clutch Operating Section 10a Paddy Discharging Lever Switch 11 Paddy Sensor 12 Upper Paddy Sensor 13 Middle Paddy Sensor 14 Lower Paddy Sensor 17 Shutter 18 Shutter Drive Means 19 Control Unit 25 Shutter Opening Detection Sensor 27 Fixed flow plate

Claims (1)

[Scope of utility model registration request] 1. A shutter whose opening can be automatically adjusted via a shutter drive means is provided above a paddy discharge spiral extending horizontally on the inner bottom of the paddy tank, and at least an upper part of the paddy tank at the time of paddy discharge is provided. When a paddy sensor for detecting the amount of paddy is provided, and the paddy sensor and the paddy discharge clutch operating section are linked with the shutter driving means via the control section, and the paddy discharge clutch operating section is turned ON while the paddy sensor is ON. A combined paddy tank shutter device, characterized in that the shutter is automatically controlled to an appropriate opening at the initial stage of paddy discharge, the opening of which is smaller than the fully opened state.