JPS6225214Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drive device for derolling a rice huller.

In other words, when the supply of paddy runs out during de-rolling of a hulling machine that is constructed by pressing an auxiliary rubber roll against the main rubber roll, both rubber rolls with different circumferential speeds rub against each other, causing problems such as damage to the roll and overloading of the motor. The disadvantage of this type of structure is that
The present invention solves this drawback and can automatically stop the forced drive to the sub-rubber roll side.
It is provided that the structure is simple and can be suitably implemented.

Next, the embodiment shown in the drawings will be described.

FIG. 1 shows a side view of the removing section in the huller. A main rubber roll 2 and a sub-rubber roll 1 are installed side by side in a removing chamber 8 which is connected to the lower part of the tank 5, and one end is fitted into the main rubber roll 2. The fixed main shaft 9 is rotatably mounted on a side support frame 10 via bearings 11, 11, and a main shaft pulley 12 and a transmission pulley 13 are fitted and fixed to the other end of the main shaft 9.
A drive belt 16 is wound around the pulley 15 of the motor 14 and the transmission pulley 13.

Inside the support frame 10, the base of an arm 18 having a boss portion 17 at its tip is rotatably connected to a fixed pivot pin 19, and the sub-rubber roll 1
The middle part of the countershaft 3 with one end fitted and fixed to the boss part 1
The air cylinder 2 is rotatably mounted on the support frame 10 via bearings 20, 20, and is mounted on the support frame 10.
The tip of a piston rod 22 extending from the piston rod 1 is connected to the boss portion 17 via a pin 23, and the sub-rubber roll 1 is installed so as to be brought into pressure contact with the main rubber roll 2 by adjusting the pressure using an air cylinder 21. .

A subshaft pulley 24 having a slightly larger diameter than the main shaft pulley 12 is loosely fitted to the outer end of the subshaft 3 via a bearing 25, and a subshaft pulley 24 is loosely fitted to the outer end of the subshaft 3 via a bearing 25. A transmission belt 28 is wound around the shaft pulley 24, and an electromagnetic clutch 4 is interposed between the outer end of the boss portion 17, the countershaft 3, and the countershaft pulley 24, and the electromagnetic clutch 4 is inserted between the clutch and the countershaft pulley 24. The subshaft 3 is integrated through an electromagnetic clutch 4, and the subshaft 3 and the subshaft pulley 24 are configured to be in an idling state with respect to each other when the clutch is disengaged.

A level sensor 6 is installed below inside the tank 5.
A shutter 7 is installed at the bottom of the tank 5, and the electromagnetic clutch 4 connected via the control box 29 is connected so as to be operated to disengage when the paddy level becomes less than the level sensor 6. When the shutter 7 is closed, the electromagnetic clutch 4 is connected via the control box 29 so that it can be operated to disengage the clutch.

During work, the motor 14 drives the drive belt 1 with the electromagnetic clutch 4 engaged.
The main rubber roll 2 is rotationally driven through the transmission belt 28 and the sub-shaft pulley 24, and the sub-rubber roll 1 is pressed against the main rubber roll 2 by the air cylinder 21, and the shutter 7 is rotated. In the open state, the paddy in the tank 5 is sent out between both rolls 1 and 2 and removed.

In this case, if the amount of paddy in the tank 5 decreases and the paddy surface moves away from the level sensor 6 as shown by the imaginary line in FIG. 1, or if the shutter 7 closes midway, the electromagnetic clutch 4 operates to cut, the subshaft pulley 24 and the subshaft 3 are brought into a state where they mutually rotate idly, and the sub rubber roll 1 comes into contact with the main rubber roll 2 and enters a state where it is idly rotated.

In this way, the present invention provides an electromagnetic clutch that is interposed in the middle of the subshaft, which is the drive shaft of the sub rubber roll, to disconnect it from the drive shaft in the derolling of a hulling machine in which the sub rubber roll is brought into pressure contact with the main rubber roll. The electromagnetic clutch is installed so that it can be freely engaged and connected, and the electromagnetic clutch can be connected and disconnected in conjunction with the sensor or shutter in the tank on the upper supply side, so that when the supply of paddy runs out, the sensor When the shutter is activated or the shutter is closed, the electromagnetic clutch can be activated to idle the secondary rubber roll, which eliminates problems such as roll damage and motor overload as mentioned above. , it has a feature that it can be implemented suitably with a simple structure.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of a removing section in a huller, and FIG. 2 is a plan sectional view of a part thereof. 1... Sub-rubber roll, 2... Main rubber roll, 3
...Secondary shaft, 4...Electromagnetic clutch, 5...Tank,
6...Sensor, 7...Shutter.

Claims (1)

[Scope of utility model registration request] In the de-rolling process of a rice husking machine in which a sub-rubber roll is pressed against the main rubber roll side, an electromagnetic clutch is inserted in the middle of the sub-shaft which is the drive shaft of the sub-rubber roll, so that transmission can be freely engaged and disconnected from the drive side. 1. A drive device characterized in that the electromagnetic clutch is installed and configured to connect and disconnect the electromagnetic clutch in conjunction with a sensor or a shutter in a tank on an upper supply side.