JPH0418983Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a safety device for a storage object removal device that takes out and transports grains and the like stored in a tank to a position away from the tank.

(Prior art) A conventional technology in which grains, etc. stored in a tank are delivered by a discharge conveyor, and the delivered grains can be taken over and transported to a remote location by a transport conveyor that is detachably attached to the tank. 1986-
It is described in Publication No. 116432.

In this conventional technology, the conveyor for discharging from the tank and the conveyor for transferring the tank are each driven by special motors, so the operation is not only complicated but also expensive. ing.

In addition, in this prior art, a so-called full sensor that detects accumulated grain in the transported grain and stops the drive of each conveyor is provided in the connection gutter between both conveyors. When the discharge part of a conveyor is placed in a hopper such as a dryer, if grains accumulate in the hopper, they will accumulate in the discharge conveyor and even in the connecting gutter. When the accumulation occurs, the sensor detects this and the drive of each conveyor is stopped. Therefore, even if an attempt is made to restart each conveyor when the number of grains in the hopper decreases, it is difficult to restart each conveyor because the grains accumulated in the discharge conveyor become a heavy load.

(Problem to be solved by the invention) In order to solve the above-mentioned drawbacks of the conventional technology, this invention proposes to provide a fullness sensor to detect the accumulation of conveyed grains at the discharge part of the conveyor for conveyance. Therefore, grains are prevented from accumulating in the conveyor,
In addition to making it easier to restart the conveyor,
Consideration has also been given to the electric circuit of the sensor installed on the transport conveyor, which can be attached to and detached from the tank, in an attempt to prevent accidents due to connection errors or falling off of this electric circuit.

(Means for solving the problem) A conveyor 2 for discharging stored items is provided at the bottom of a tank 1, and a conveyor 5 for taking over and conveying the stored items to be discharged is detachably provided at the terminal end of the discharging conveyor 2. Each of the conveyors 2 and 5 is configured to be able to be driven by a single motor 3 mounted on a tank 1 via a transmission mechanism 4, and the motor 3 is rotated by detecting the accumulation of conveyed objects in the discharge section 6 of the conveyor 5. In order to provide a fullness sensor 7 for stopping the motor 3, the electric circuit 8 of the fullness detection sensor 7 is connected to a motor control circuit 9 provided on the tank 1 side.
This is a safety device for a device for taking out stored items from a tank, which is connected to enable activation.

(Effect of the invention) When discharging the contents of the tank 1, first, the conveyor 5 is placed at the end of the discharge conveyor 2 of the tank 1.
are connected via a transmission mechanism 4, and an electric circuit 8 of a fullness detection sensor 7 provided at the discharge section 6 of the conveyor 5 is connected to a motor control circuit 9 on the tank 1 side. By this connection operation, the fullness detection sensor 7
The electric circuit 8 is energized, the motor control circuit is connected, and the motor 3 is ready to start.

Next, when the motor 3 is started by operating a switch, the stored items in the tank 1 are transferred from the discharge conveyor 2 to the conveyor 5, where they are taken out and conveyed. During this take-out and conveyance operation, when grains accumulate in a hopper such as a grain conditioner that is supplied from the conveyor 5, subsequent grains accumulate in the discharge section 6 of the conveyor 5, and the fullness detection sensor 7 detects this and sends a signal to the motor control circuit 9 to stop the motor 3 and stop driving the discharge conveyor 2 and the transfer conveyor 5. Further, when the processing of the grains progresses and the detection by the fullness sensor 7 is canceled, the motor 3 is started again to continue taking out and transporting the stored items.

(Effect of the invention) Since this invention is configured as described above, the fullness sensor 7 provided in the discharge section 6 of the conveyor 5 detects accumulation of grains, stops the motor 3, and stops the motor 3 of the conveyor 5. The electric circuit 8 of the fullness detection sensor 7 provided on the side of the conveyor 5 when the conveyor 5 is connected to the tank 1 prevents grains from accumulating in the tank 5 and facilitates restarting.
By connecting the motor control circuit 9 to the motor control circuit 9 on the side of the tank 1, the motor 3 can be started, and it is possible to prevent clogging due to forgetting to connect the electric circuit 8 of the full detection sensor 7. Since the motor 3 is stopped even if the electric circuit 8 of 7 falls off, clogging of conveyed objects and damage to equipment caused by this clogging can be prevented.

(Example) In the illustrated example, the tank 1 has front and rear side plates 12, 1
2. The tank 1 is constructed so that grains, etc. can be stored therein by the flow grain plates 13, 13, the bottom plate 14, etc.
A discharge conveyor 2 is mounted on a shaft between side plates 12 at the bottom, and is configured to be able to transfer stored grains toward a discharge port 16 on one side of the tank 1. 17 is a sliding shutter for the discharge port 16.

The motor 3 is attached to the lower part of the tank 1 opposite to the outlet 16, and a belt 20 is wound between a pulley 18 at the end of the shaft and a pulley 21 provided at the end of the intermediate shaft 19, and the motor 3 is further attached to the intermediate shaft 19. A belt 25 is wound between the pulley 22 and a pulley 24 provided at the end of the shaft 23 of the discharge conveyor 2, thereby forming a transmission mechanism 4 capable of driving each shaft.

Reference numeral 26 denotes a take-out gutter, which is configured to be able to receive grains falling from the discharge port 16, and which
6, a receiving portion 27 of the conveyor 5 is configured to be detachable.

The conveyor 5 is a flexible screw conveyor consisting of a flexible tube 28 and a transfer rod 29 that is installed inside the tube 28 and wound in a coil shape. It is composed of a mounting tube 30, a bearing 32 that pivotally supports a shaft 31 attached to the end of the transfer rod 29, and a plurality of connecting rods 33 that connect the mounting tube 30 and the bearing 32, and connects the shaft 31 to an intermediate shaft. Power can be transmitted by fitting the joint 34 attached to the 19 end, and the bearing 32 can be removed from the gutter 26.
It can be inserted into the fitting hole of the vertical wall 35 of the mounting tube 3.
0 can be attached to and detached from the side plate 12 using bolts or the like.

A pressure-sensitive full sensor 7 is attached to the discharge section of the conveyor 5, and is configured to turn off the limit switch LS1, which is an example of the full sensor 7, when grains accumulate in the discharge section 6. .

36 is a control box that houses the motor control circuit 9, and a connector 37 of the electric circuit 8 is configured to be detachable. Further, the connector 37 is provided with a connection circuit 11 to which the disconnected portion 10 of the motor control circuit 9 can be connected. Further, in the motor control circuit 9, 38 is a power switch, 39 is a relay coil,
40 is a relay contact, 41 is a coil of an electromagnetic contactor,
42 is a contact point of an electromagnetic contactor. 43 is a grain conditioner, and 44 is its hopper.

When discharging the contents of tank 1, first,
The receiving portion 27 of the conveyor 5 is inserted into the take-out gutter 26 of the tank 1 and attached. That is, the bearing 32 of the conveyor 5 is inserted and held in the fitting hole of the vertical wall 35, the shaft 31 is inserted and connected to the joint 34, and the mounting cylinder 30 is connected to the side plate 12.

Next, when the connector 37 of the electric circuit 8 of the fullness sensor 7 is fitted into the control box 36, the disconnected portion 10 of the motor control circuit 9 is connected by the connection circuit 11 provided in the connector 37.

When the power switch 38 is turned on in this state, the relay coil 39 is energized and the relay contact 40 is turned on, and then the coil 41 of the electromagnetic contactor is energized and the contact of the electromagnetic contactor 42 is turned on, and the motor 3 is started. .

When the motor 3 is started, the discharge conveyor 2 and the transfer conveyor 5 are driven through the transmission mechanism 4, and the grains in the tank 1 are transferred by the discharge conveyor 2, are fed down from the discharge port 16 to the take-out trough 26, and then are and transported by the transport conveyor 5.

When the hopper 44 of the grain conditioner 43 becomes full with the grains discharged from the discharge section 6 of the conveyor 5, subsequent grains accumulate in the discharge section 6, and the fullness sensor 7 detects the pressure. and limit switch
LS1 is turned off, and power to the motor control circuit 9 is cut off. Therefore, the contacts 42 of the electromagnetic contactor are separated and the motor 3 is stopped, and the driving of the discharge conveyor 2 and the transfer conveyor 5 is stopped. In addition, since this stopping operation is performed by detection by the sensor 7 provided at the final end of the conveyor 5, only the grains being transferred exist in the conveyor 5, and subsequent grains may accumulate. Therefore, restarting is easy.

Further, when there are no grains in the discharge section 6 due to the processing of the grain adjuster 43, the fullness detection sensor 7 is reset, the limit switch LS1 is turned on, the motor 3 is started, and the grain removal and conveyance is resumed. .

During this grain removal and transportation, if the electric circuit 8 of the fullness sensor 7 falls off from the connector 37, or if you forget to connect the connector 37, the disconnection of the motor control circuit 9 10 is not connected and the motor 3 is not activated, there is no possibility of clogging the conveyor 5 or damaging the equipment by conveying grains when the full sensor 7 is inactive.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 shows a control circuit diagram and FIG. 2 shows an overall side sectional view. In the figure, 1 is a tank, 2 is a discharge conveyor, and 3 is a tank.
is a motor, 4 is a transmission mechanism, 5 is a conveyor, 6
is a discharge part, 7 is a full sensor, 8 is an electric circuit,
Reference numeral 9 indicates a motor control circuit, 10 indicates a disconnection portion, and 11 indicates a connection circuit.

Claims (1)

[Scope of utility model registration request] A conveyor 2 for discharging stored items is provided at the bottom of the tank 1, and a conveyor 5 for taking over and conveying the stored items to be discharged is detachably provided at the end of the discharging conveyor 2. The conveyor 5 is configured to be driven by a single mounted motor 3 via a transmission mechanism 4, and is equipped with a fullness sensor 7 that detects accumulation of conveyed objects in the discharge section 6 of the conveyor 5 and stops the rotation of the motor 3. By connecting the electric circuit 8 of the fullness detection sensor 7 to the motor control circuit 9 provided on the tank 1 side, the motor 3
A safety device for a device for removing stored items from a tank, which is wired to enable activation.