JPS63151793A - Tensioner neutral-point compensator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a tension neutral point compensation device that is used in the cable storage and transfer device of a manganese nodule mining experimental ship.

[Conventional technology]

For example, in a cable storage and transfer device, a device shown in the schematic diagram of FIG. 3 has been proposed as a device for keeping the tension of the cable constant. In the above diagram, 02 is cable 4
5 is a guide sheave provided in the middle of the cable 4; 6 is a movable sheave provided between the guide sheaves 5; 7 is a tensile winding ring; 8 is a piston that slides inside the tensioner cylinder and is connected to the movable sheave 6 by a rod.

The pressure on the head side and rod side of the tension cylinder 7 is maintained at a constant pressure by a pressure f4 control device (not shown).

In such a configuration, when the tension of the cable 4 increases, the piston 8 rises, but since the pressure inside the tension ring 7 is kept constant by a pressure control device (not shown), the tension of the cable is also kept constant. Ru.

(Problem to be Solved by the Invention) However, in such a configuration, when the tension of the cable 4 increases and the piston 8 reaches the top, it becomes impossible to further increase the tension. , conversely, if the tension decreases and the piston 8 reaches the bottom,
There is a problem in that it is impossible to control the decrease in tension below that level.

The present invention was proposed in view of these circumstances, and
It is an object of the present invention to provide a tensina neutral point compensating device capable of controlling the tension of a cable at a constant level and stably storing and transporting the cable by always holding the piston of the tensina ring near the neutral point.

[Means for solving problems]

For this reason, the present invention provides a cable having a transporter for storing and transporting a cable, a storing and transporting speed control device for controlling the storing and transporting speed of the cable by the transporter, and a tension ring that maintains the tension of the cable at a constant value. In the storage and transfer device, a position detector detects the position of the piston in the tensile ring, and a signal from the 1st position detector is received to adjust the storage and transfer speed correction value of the cable in order to maintain the piston position within the upper and lower limit set values. The present invention is characterized by comprising a speed correction value calculation device that outputs to a storage transfer speed control device.

[Effect]

With this configuration, when the tension in the cable continues to increase or decrease and the piston exceeds the upper or lower set value, the speed correction value calculation device stores the speed correction value to return the piston to between the upper and lower set values. Output to the control device,
Upon receiving the output, the transporter is controlled by the storage transfer speed control device to return the piston to within the upper and lower limit set values.

〔Example〕

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

FIG. 1 is a schematic diagram of a cable storage and transfer device equipped with a tensina neutral point compensating device of the present invention, and FIG. 2 is a circuit diagram of the tensina neutral point compensating device of the present invention.

In FIG. 1, 1 is a speed correction value calculation device.

2 is a storage transfer speed control device, 3 is a transporter for transferring the cable 4, 5 is a guide sheave provided in the middle of the cable 4, 6 is a movable sheave provided between the guide sheaves 5, and 7 is a tensile pear. A ring, 8 is a piston that slides in the Tensilona cylinder 7 and is connected to the movable sheave 6 by a rod, 9 is a position detector that detects the position of the piston 8, and the position detection signal H of the piston 8 is a speed correction It is sent to the value calculation circuit 1. In addition, tensile strength cylinder 7
The pressures on the head side and the rod side are maintained at a constant pressure by a pressure control device (not shown).

The position detection signal H of the piston 8 detected by the position detector 9 is determined by the absolute value circuit 14 and the comparison circuit 16 in the speed correction value calculation device 1 shown in FIG. It is determined whether IHI exceeds the absolute value IHXI of the upper or lower limit set by the upper and lower limit setting circuit 20.

If it exceeds, the switching circuit 18 transmits the speed setting signal 1Vsl set by the speed setting circuit 21, and if it does not exceed it, the switching circuit 18 transmits a signal of "01" set by the constant generating circuit 13. .

Also, the first position detector number H is provided by the comparator circuit 15.

It is compared with the value of 10" set by the constant generator circuit lO,
It is determined whether the piston 8 has gone up or down. If the piston 8 is going up, the switching circuit 17 sends a signal of "+t" set in the constant generating circuit 12, and if it is going down, the signal "+t" set in the constant generating circuit 11 is sent out. -1'' signal is transmitted from the switching circuit 17.

The respective signals issued by each switching circuit 17, 18 are multiplied by a multiplier circuit 19 and the storage transfer speed control device! Sends the speed correction value Vs to 2.

Then, the storage and transfer speed control bag W2 controls the normal storage or transfer speed value Vo of the cable 4 as shown in FIG.
and the speed correction value Vs.

The transporter 3 is thereby controlled.

In addition, when the piston position detection signal H is set as plus for the upper side and minus for the lower side, each speed value V.

And Vs becomes positive when the cable 4 is transferred, that is, in the Y direction in FIG. 1, and becomes negative when the cable 4 is stored.

In such a configuration, for example, the transporter 3 is controlled by the storage transfer speed control device 2.

3 while the cable 4 is being transferred in the Y direction at a speed Vo.
Normally, the difference between the pressures applied to the head side and rod side of the tensile ring 7 by a pressure control device (not shown) and the piston 8. The weight of the rod and the movable sheave 6 and the force pushing up the movable sheave 6 due to the tension of the cable 4 are balanced.

The piston 8 is located at the machine neutral point of the Tensilona cylinder 7.

Suppose that for some reason, for example, the tension in the cable 4 decreases and the piston 8 descends to keep the tension constant. Then, the position detection signal H of the piston 8 is transmitted to the absolute value circuit 14 and the comparison circuit 16 in the speed correction value calculation device l.
Therefore, the deviation IHI from the neutral point becomes the absolute value IHXI of the upper limit or lower limit set by the upper and lower limit setting circuit 20.
The speed setting signal 1Vsl set by the speed setting circuit 21 is transmitted from the switching circuit 18.

Further, the 5th position detector number H is provided by the comparator circuit 15.

It is determined that the value has decreased by comparing it with the value of "03" set by the constant generator circuit 10, and the value of "-1" is set by the constant generator circuit 11.
1 signal is transmitted by the switching circuit 17. The respective signals issued by the switching circuits 17 and 18 are multiplied by the multiplier circuit 19 to issue a velocity correction value Vs (a negative value) to the storage transfer velocity control device 2.

Then, the storage transfer speed control device 2 controls the normal transfer speed value Vo (positive value) of the cable 4 and the speed correction value V
Add s (negative value).

The transporter 3 is thereby controlled.

In this way, while the cable 4 is being transported in the Y direction,
If the tension increases, the transfer rate is increased; if the tension decreases, the transfer rate is decreased. Further, while the cable 4 is being stored in the direction opposite to Y, if the tension increases, the storage speed is decreased, and if the tension decreases, the storage speed is increased. In this way, the piston 8 of the tension ring 7 is always maintained within the upper and lower limit set values, that is, near the neutral point.

〔Effect of the invention〕

As described in detail above, according to the tensioner neutral point compensation device of the present invention, the piston of the tensioner ring is always maintained within the upper and lower limit set values, so the cable The tension can be controlled to be constant, and the cable can be stored and transferred in a stable manner at all times.

[Brief explanation of the drawing]

1.2 shows a tensioner neutral point compensation device as an embodiment of the present invention, and FIG. 1 is a schematic diagram of a cable storage and transfer device equipped with the same. Figure 2 is its circuit diagram. FIG. 3 is a schematic diagram of a conventional cable storage and transfer device. l... Speed correction value calculation device, 2... Storage transfer speed control device, 3... Transporter, 4... Cable. 7... Tenshironashi ring, 8... Piston. 9...Position detector.

Claims (1)

[Claims] In a cable storage and transfer device that includes a transporter that stores and transfers a cable, a storage and transfer speed control device that controls the storage and transfer speed of the cable by the transporter, and a tensioner cylinder that maintains the tension of the cable at a constant value, A position detector detects the position of the piston, and upon receiving the signal from the position detector, outputs a speed correction value for the storage transfer speed of the cable to the storage transfer speed control device in order to maintain the piston position within the upper and lower limit set values. A tensioner neutral point compensation device comprising: a speed correction value calculation device.