JPH0633201Y2 - Rotating device control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a control device for a rotating device such as a reel clamp.

[Conventional technology]

FIG. 2 shows a control device for a general rotating device. In the figure, 1 is an operation valve, and 2 is a hydraulic motor for rotating a rotating device 3 such as a roll clamp.

The pump port 1a of the operation valve 1 is connected to the discharge side of the pump 4 via the discharge pipe line 5, and the tank port 1b of the operation valve 1 communicates with the tank 6. Port 1c of operating valve 1,
1d is connected to the hydraulic motor 2 via pipe lines 7 and 8, and an electromagnetic valve 9 for opening and closing the pipe lines 7 and 8 is provided between the operation valve 1 and the hydraulic motor 2.

The lever 10 of the operation valve 1 is provided with a start switch 11, and the rotary device 3 has a rotary position sensor 1 for detecting a concave portion and a convex portion of a detecting portion 3a of the rotary device 3 to indicate a stop position.
2 is provided. The start switch 11 and the rotational position sensor 12 are connected to the input side of the controller 13, and the output side of the controller 13 is connected to the solenoid 9a of the solenoid valve 9.

The solenoid valve 9 is normally open. If the start switch 11 is not pressed, the controller 13 does not operate and the solenoid valve 9 is in the closed position a, and the operation valve 1 is operated to operate the hydraulic motor 2. Keeps spinning. When the start switch 11 is pressed, the controller 13 is activated and the automatic operation is performed. By operating the operation valve 1, the rotating device 3 is operated.
Rotates until it is detected by the rotational position sensor 12, and when the rotational position sensor 12 detects the stop position (detection unit 3a), the controller 13 energizes the solenoid 9a of the solenoid valve 9 to the closed position b, and the hydraulic pressure from the operation valve 1 is changed. Pipe lines 7, 8 to the motor 2
Is closed and the rotation of the rotating device 3 is stopped.

[Problems to be solved by the invention]

However, in the rotation control by the above-described control device, the pressure oil supply to the hydraulic motor 2 is suddenly stopped, so that the rotation stop of the rotation device 3 is abrupt, and the rotation device is provided by the reaction of the sudden rotation stop. The vehicle was wobbling and unsafe.

[Purpose of device]

The present invention has been made in view of the above circumstances, and an object thereof is to enable the rotation speed of the rotating device to be gradually reduced to stop the rotation, resulting in a sudden rotation stop. It is an object of the present invention to provide a control device for a rotating device that can solve the problem that the vehicle is staggered and unsafe due to reaction.

[Means for solving problems]

The pressure oil from the pump 4 is passed through the first pipe line 7 and the second pipe line 8 by the switching operation of the operation valve 1 to the first port 2a of the hydraulic motor 2.
In the control device of the rotating device that supplies the oil to the second port 2b to rotate the hydraulic motor 2 to rotate the rotating device 3, the operation valve 1 is operated to the position where the pressure oil is supplied to the first conduit 7. Operating valve detecting means 28 for detecting that
Of the first and second rotational position detecting means 26 and 27 for detecting the rotational position of the first and second rotational positions, and the first and second rotational position detecting means 26 and 27.
The first conduit 7 is provided in the middle of the conduit 7 and the second conduit 8.
-A solenoid valve 14 for opening and closing the second pipeline 8, and the second pipeline 8
The soft stop control section 17 provided in the
The first and second switching valves 15 and 16 provided closer to the operation valve 1 and the hydraulic motor 2 than the soft stop control unit 17 in the second pipeline 8 are provided, and the soft stop control unit 17 includes the second pipe. The throttle 18 provided in the passage 8, the third pipeline 22, the fourth pipeline 23, and the third pipeline 22 connected to the operation valve side of the throttle 18 and the hydraulic motor 2 side of the second pipeline 8 thereof. A first solenoid valve 19 provided in a conduit 24 that short-circuits the fourth conduit 23, the third conduit 22,
The second solenoid valve 20 is provided between the fourth conduit 23 and the flow rate adjusting valve 21, and receives commands from the operation valve detecting means 28 and the first and second rotational position detecting means 26, 27. The solenoid valve 14, the first / second switching valves 15, 16 and the first / second soft stop control section
A controller 29 for switching and controlling the solenoid valves 19 and 20 is provided. When the controller 29 does not receive a command from each detecting means, the solenoid valve 14 is opened to the open position a, and the first and second switching valves 15 and 16 are sequentially operated. The directional position c, the first electromagnetic valve 19 in the open position a, the second electromagnetic valve 20 in the closed position b, and when the first command is input from one of the rotational position detecting means, the first electromagnetic valve 19 is closed in the closed position b, When the second electromagnetic valve 20 is set to the open position a, the next command is input from the other rotational position detection means, the electromagnetic valve 14 is set to the closed position b, and when the command is input from the operation valve detection means 28, A control device for a rotating device in which the second switching valves 15 and 16 are set to the reverse position d.

[Action]

The soft stop control unit 17 does not operate in the initial stage of operating the operation valve 1 to supply the pressure oil of the pump 1 to the hydraulic motor 2 to rotate the rotating device 3, and supply a large amount of pressure oil to the hydraulic motor 2. Therefore, the rotating device 3 can be rotated at high speed.

When one of the rotational position detecting means detects and operates, the soft stop control section 17 operates to reduce the flow rate to the hydraulic motor 2 to rotate at a low speed, and when the other rotational position detecting means thereafter detects and operates, the solenoid valve 14 closes. Since it becomes b, the hydraulic motor 2 is stopped and the rotating device 3 is stopped, so that the rotation speed of the rotating device 3 can be reduced to stop the rotation.

Further, when the operation valve 1 is operated to the position where the pressure oil is supplied to the first conduit 7, the first and second switching valves 15 and 16 are moved to the reverse position d.
Therefore, the pressure oil in the first pipeline 7 can be circulated through the soft stop control section 17 provided in the second pipeline 8 and again into the first pipeline 7, so that the soft stop control section 17 operates in the second pipeline. It should be provided only on the road 8.

〔Example〕

 An embodiment of the present invention will be described below with reference to FIG.

FIG. 1 shows an embodiment of the present invention, in which 1 is an operating valve,
Reference numeral 2 is a hydraulic motor that rotates a rotating device 3 such as a roll clamp.

The pump port 1a of the operation valve 1 is connected to the discharge side of the pump 4 via the discharge pipe line 5, and the tank port 1b of the operation valve 1 communicates with the tank 6. Port 1c of operating valve 1,
1d is connected to the hydraulic motor 2 via pipes 7 and 8, and the first and second pipes 7 and 7 are provided between the operation valve 1 and the hydraulic motor 2.
A solenoid valve 14 for opening and closing 8 is provided.

A circuit (first and second circuits) between the operation valve 1 and the hydraulic motor 2.
The first and second switching valves 15 and 1 are connected to the pipes 7 and 8).
6 and a soft stop controller 17 are provided.

The soft stop control unit 17 includes a throttle valve 18 provided in the second pipe line 8, a first electromagnetic valve 19, a second electromagnetic valve 20, and a flow rate adjusting valve 21. Port 20
a and 20b are connected to both ends of the throttle valve 18 in the second pipeline 8 via the third and fourth pipelines 22 and 23, and are pipes that short-circuit these third and fourth pipelines 22 and 23. First on road 24
An electromagnetic valve 19 is provided, and the ports 20c and 20d of the second electromagnetic valve 20 communicate with the tank 6 via a flow rate adjusting valve 21.

In FIG. 2, 28 is an operation valve detecting means, for example, a lever sensor,
Reference numeral 25 is a start switch, and 26 and 27 are first and second rotational position detecting means, for example, sensors.
8, 26, 27 and the start switch 25 are connected to the input side of the controller 29, and the output side of the controller 29 has solenoids 14a, 15a, 16a of the solenoid valve 14 and the first and second switching valves 15, 16 respectively. And solenoids 19a and 20e of the first and second solenoid valves 19 and 20, respectively.

Next, the operation will be described.

Controller 2 when the start switch 25 is not pressed
9 does not operate and is manually operated, and each solenoid 14a,
Since 15b, 16a, 19a, and 20e are not energized, the solenoid valve 14 and the first solenoid valve 19 are in the open position a, the first and second switching valves 15 and 16 are in the forward position c, and the second solenoid valve 20 is in the closed position. b.

When the operating valve 1 is operated to the first position A or the second position B in this state, the pressure oil of the pump 4 is supplied to the hydraulic motor 2 and the rotating device 3 continues to rotate, and when the operating valve 1 is set to the neutral position C, it stops. To do.

At this time, before and after the throttle 18 in the second pipe line 8, a short circuit is made in the pipe line 24, so that oil does not flow through the throttle line 18.

When the start switch 25 is pressed, the controller 29 is activated and automatically operated. However, each solenoid 14a, 15b,
The valves 16a, 19a, and 20e are not energized, and the valves are in the positions shown in FIG.

When the operation valve 1 is set to the second position B in this state, the pressure oil of the pump 4 flows into the second port b of the hydraulic motor 2 from the second pipe 8 to rotate in one direction, and the rotating device 3 rotates to the right. To do. At this time, since the pressure oil does not flow to the throttle 18 and the flow rate adjusting valve 21, the flow rate to the hydraulic motor 2 is large and the rotating device 3 rotates at high speed.

When the first rotation position sensor 26 detects and operates due to the rotation of the rotating device 3, the controller 29 outputs a deceleration command to energize the solenoids 19a and 20e to close the first solenoid valve 19 to the closed position b and the second solenoid valve 20. Is an open position a.

As a result, the pipe line 24 is shut off and the pressure oil of the pump 4 becomes the second oil.
The second port 2 of the hydraulic motor 2 passes through the throttle 18 of the pipe 8.
Since it is supplied to b, its flow rate decreases, and
Since the pressure oil on the upstream side of the hydraulic fluid flows from the third pipe line 22 to the flow rate adjusting valve 21 and a part of the pressure oil flows out to the tank 6, the flow rate to the hydraulic motor 2 is further reduced. The rotation speed, that is, the rotation of the rotation speed 3 is reduced.

When the rotating device 3 further rotates and the second rotational position sensor 27 detects and operates, the controller 29 outputs a stop command to energize the solenoid 14a of the solenoid valve 14 to the closed position b, and the first and second conduits 7, 8 are cut off, the hydraulic motor 2 is stopped, and the rotation of the rotating device 3 is stopped.

When the operation valve 1 is set to the first position A in the above-described automatic operation state, the lever sensor 28 detects and the controller 29 outputs a left rotation (switching) command to output the first and second switching valves 15, 1.
6 solenoids 15a, 16a are energized to reverse position d
Switch operation to. For this reason, the pressure oil of the pump 4 is the operating valve 1
First position A (port 1c), first pipe line 7, reverse position d of first switching valve 15, second pipe line 8, reverse position d of second switching valve 16, first pipe line 7 to the first port 2a of the hydraulic motor 2 to rotate the hydraulic motor 2 counterclockwise,
Rotate counterclockwise.

That is, the throttle 18 and the flow rate adjusting valve 21 are provided in the second pipe line 8, and when rotating counterclockwise, the pressure oil is supplied from the first pipe line 7 to the first port 2a of the hydraulic motor 2. The switching valve 15 is set to the reverse position d, and the pressure oil in the first conduit 7 is caused to flow into the second conduit 8 so as to flow through the throttle 18 and the flow rate adjusting valve 21, and then the second switching valve 16 is positioned in the reverse position. As d, the pressure oil is made to flow again into the first conduit 7 to supply the pressure oil to the first port 2a of the hydraulic motor 2.

When the rotating device 3 rotates counterclockwise in the above-described state and the second rotational position sensor 27 detects and operates, the controller 29 outputs a deceleration command and switches the first and second solenoid valves 19 and 20 to decelerate as described above. Then, when the rotating device 3 further rotates and the first rotational position sensor 26 detects and operates, the controller 29 outputs a stop command and switches the solenoid valve 14 to stop the rotating device 3 as described above.

[Effect of device]

The soft stop control unit 17 does not operate in the initial stage of operating the operation valve 1 to supply the pressure oil of the pump 1 to the hydraulic motor 2 to rotate the rotating device 3, and supply a large amount of pressure oil to the hydraulic motor 2. Therefore, the rotating device 3 can be rotated at high speed.

When one of the rotational position detecting means detects and operates, the soft stop control section 17 operates to reduce the flow rate to the hydraulic motor 2 to rotate at a low speed, and when the other rotational position detecting means thereafter detects and operates, the solenoid valve 14 closes. Since it becomes b, the hydraulic motor 2 is stopped and the rotating device 3 is stopped. Therefore, the rotation speed of the rotating device 3 can be decelerated to stop the rotation, so that the vehicle does not fluctuate due to the reaction generated when the rotation is suddenly stopped. The problem of being safe can be resolved.

Further, when the operation valve 1 is operated to the position where the pressure oil is supplied to the first conduit 7, the first and second switching valves 15 and 16 are moved to the reverse position d.
Therefore, the pressure oil in the first pipeline 7 can be circulated through the soft stop control section 17 provided in the second pipeline 8 and again into the first pipeline 7, so that the soft stop control section 17 operates in the second pipeline. Since it is sufficient to provide only the path 8, the number of parts is reduced and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a structural explanatory view of an embodiment of the present invention, and FIG. 2 is a structural explanatory view of a control device for a general rotating device. 1 is an operating valve, 2 is a hydraulic motor, 3 is a rotating device, 14 is a solenoid valve, 15 and 16 are first and second switching valves, 17 is a soft stop control unit, 25 is a start switch, and 26 and 27 are rotating. One sensor, 29 is a controller.

Claims (1)

[Scope of utility model registration request] 1. A pressure oil from a pump 4 is supplied to a first port 2a and a second port 2b of a hydraulic motor 2 through a first conduit 7 and a second conduit 8 by a switching operation of an operation valve 1. In the control device of the rotating device that drives the hydraulic motor 2 to rotate to rotate the rotating device 3, the operating valve detecting means 28 for detecting that the operating valve 1 is operated to the position for supplying the pressure oil to the first conduit 7.
And first and second rotational position detecting means 26, 2 which detect the rotational position of the rotating device 3 and are provided at intervals in the rotational direction.
7, and a solenoid valve 14 provided in the middle of the first pipeline 7 and the second pipeline 8 for opening and closing the first pipeline 7 and the second pipeline 8;
A soft stop control unit 17 provided in the second pipeline 8,
A first valve provided closer to the operation valve 1 and closer to the hydraulic motor 2 than the soft stop controller 17 in the first conduit 7 and the second conduit 8.
The second stop valves 15 and 16 are provided, and the soft stop control unit 17 includes the throttle 18 provided in the second pipeline 8, the throttle 18 in the second pipeline 8 near the operation valve and the hydraulic motor 2. To the third pipe line 22, the fourth pipe line 23, the first solenoid valve 19 provided in the pipe line 24 that short-circuits the third pipe line 22 and the fourth pipe line 23, and the third pipe line 22. ,
The second solenoid valve 20 is provided between the fourth conduit 23 and the flow rate adjusting valve 21, and receives commands from the operation valve detecting means 28 and the first and second rotational position detecting means 26, 27. The solenoid valve 14, the first / second switching valves 15, 16 and the first / second soft stop control section
A controller 29 for switching and controlling the solenoid valves 19 and 20 is provided. When the controller 29 does not receive a command from each detecting means, the solenoid valve 14 is opened to the open position a, and the first and second switching valves 15 and 16 are sequentially operated. The directional position c, the first electromagnetic valve 19 in the open position a, the second electromagnetic valve 20 in the closed position b, and when the first command is input from one of the rotational position detecting means, the first electromagnetic valve 19 is closed in the closed position b, When the second electromagnetic valve 20 is set to the open position a, the next command is input from the other rotational position detection means, the electromagnetic valve 14 is set to the closed position b, and when the command is input from the operation valve detection means 28, A control device for a rotating device in which the second switching valves 15 and 16 are set to the reverse position d.