JPH06282328A - Automatic detection controller for sag of coil terminal - Google Patents

Abstract

PURPOSE:To provide an automatic detection controller capable of automatically detecting the sag of a coil terminal on a fixed skid by a carrier truck itself immediately before lifting up the coil and surely evading collision between the coil and each part of the truck. CONSTITUTION:This automatic detection control device is provided with a contact type coil terminal detecting means 13 arranged at a position can the longitudinal direction extended line of a lifting skid 10 on the coil carrier truck 1 to detect the coil sagging part 12a of the coil 12 on the skid 11, a control device arranged on the truck 1 or on the outside of the truck 1 and allowed to emergently stop the truck 1 and hold the truck 1 at an operation command waiting state based upon a contact detection signal outputted from the means 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil end drooping automatic detection control device for avoiding an unexpected collision between a coil carrier and a coil end drooping portion placed on a fixed skid.

[0002]

2. Description of the Related Art In steelworks, factories, coil storage areas,
A fixed skid for coil support installed at the loading and unloading place, and an orbital traveling type coil transfer carriage that travels under the fixed skid and picks up the coil on the fixed skid and transfers it to the fixed skid at another place are used. ing. When a coil is placed on a fixed skid, the band holding the coil is broken and the bare coil end hangs down into the skid gap when the coil end is placed facing the central gap in the skid. May occur. In this state, when the coil carrier enters the fixed skid to receive the coil, the coil receiver on the coil carrier collides with the coil end sagging part from the width direction of the plate, and the coil cannot be picked up. This causes damage to both the coil and the carriage. Such drooping of the coil end on the fixed skid occurs several times in January, and in the past, the on-site worker visually observed the coil end drooping to avoid the collision with the trolley. However, it is difficult to avoid a reliable collision, and this hinders automation of the operation of the coil carrier.

[0003]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above circumstances, and the coil end drooping on a fixed skid can be automatically detected by the coil carrier truck itself immediately before the coil is lifted. SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic detection control device for coil end drooping, which can reliably avoid a collision between a coil and each part of a trolley and facilitate automation of a coil transport trolley.

[0004]

To this end, the present invention provides a contact type detection means provided at a position on the carriage of an extension line of the vertical direction of a skid of a coil carrier to detect a coil end sag on a fixed skid. And a control device provided on or outside the coil carrier to bring the coil carrier to an emergency stop and wait for a driving instruction in response to a contact detection signal from the contact detection means.

[0005]

In the coil edge drooping automatic detection control device of the present invention, the contact type detection means has the coil edge that hangs down from the gap of the fixed skid within the cross-sectional locus along which the coil receiving skid portion of the coil carrier truck moves and passes. The contact is detected and a signal indicating the presence / absence of the contact is transmitted to the coil transfer carriage or a control device outside the carriage. The control device identifies the received signal from the contact detection means by the discriminating unit, continues the operation through the automatic or manual operation control unit when there is no coil end sag, and when the coil end sag is detected. The control of stopping the traveling of the coil transfer vehicle through the emergency stop control unit, sending an alarm, and holding the coil transfer vehicle in the waiting state for the operation instruction is performed.
The emergency stop of the coil carrier is transmitted to relevant parts through an alarm, the cause of the emergency stop is eliminated, and an appropriate operation instruction is given to the coil carrier.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an automatic detection control device for coil end drooping according to the present invention will be described with reference to the drawings. FIG. 1 is a side view of a coil carrier having the automatic detection control device, and FIG. 2 is an end view along II, FIG. 3 is a side view of the operating state of the contact-type coil end detection means, FIG. 4 is a block diagram showing the configuration of the control device, and FIG. 5 is a flow chart of the operation of the automatic detection control device. FIG. 6 is a perspective view of another embodiment of the contact type coil end detecting means.

In FIGS. 1 and 2, reference numeral 1 is a coil carrier truck, 2 is a truck frame on which a wheel 3 rides on a track 4, 5, 6
Is a traveling motor and a hydraulic unit provided at the front and rear portions of the bogie frame 2, 7 is a lift table that is moved up and down by a hydraulic cylinder 8 on the bogie frame 2, and 10 is a lift skid provided on the lift table 7. 11 is a fixed skid on the ground through which the coil carrier 1 can pass, 12 is a coil mounted on the fixed skid 11, 13 and 13 are end positions of the carriage on the extension line in the longitudinal direction of the descending lift skid 10 on the coil carrier 1. The contact-type coil end detecting means is attached to the column via the support 14. The contact-type coil end detecting means 13 is connected between the tip ends of the switch levers of the pair of limit switches 15, 15 mounted on the support 14 so as to match the cross-sectional shape of the lifting skid 10 along the upper surface of the skid 10. The linear contact portion 16 is formed, and the coil end hang-down portion 12a which crosses into the cross-section extension locus of the lifting skid 10 of the coil carrier 1 when moving an empty load is caught by the linear contact portion 16 and the limit switch I am trying to operate 15, 15. In FIG. 1, when the coil carrier 1 enters the fixed skid 11 from the left side or the right side, the contact-type coil end detecting means 13 on the front side in the traveling direction of the same car 1 detects the presence or absence of the coil end hanging portion 12a. To do.

Referring to FIG. 3, the operation of the contact type coil end detecting means 13 when the coil carrier 1 enters the fixed skid 11 from the left side will be described. As the linear contact portion 16 of the contact-type coil end detection means 13 advances into contact with the coil end hanging portion 12a, the switch lever of the limit switch 15 moves the linear contact portion as indicated by the chain line. The signal is sent to the control device of the coil carrier vehicle 1 by tilting backward through 16 and operating the switch. As shown in FIG. 6, the contact-type coil end detecting means 13 is composed of a plate-shaped or frame-shaped contact portion 16 'rotatably supported by the column 14, and a limit switch 15' responsive thereto.
Any other configuration can be used.

Next, the configuration of the control device provided together with the contact type coil end detecting means 13 will be described with reference to FIG. 4. The control device 20 is provided on the coil transfer carriage 1 or in a control room for collectively controlling a large number of carriages 1. This is a control for continuously operating the traveling motor 5 with a discriminating section 21 for discriminating the presence or absence of the coil end sagging section 12a from the signal sent from the contact type coil end detecting means 13, and a signal without the sagging section by the discriminating section 21. The control unit 23 includes a unit 22 and a control unit 23 that controls the traveling motor 5 to be in an emergency automatic stop state by a signal indicating that the coil end is drooping by the determination unit 21 and waits for a driving instruction. Control unit 23
At the same time, an alarm will be sent to relevant departments at the same time as an emergency automatic stop.

The operation of the automatic detection control device for such coil end drooping will be described with reference to FIG. At the same time when the coil carrier 1 is put into operation, the signal input from the contact type coil end detection means 13 to the control device 20 is started. When the empty coil carrier 1 enters the fixed skid 11 and the contact-type coil end detection means 13 at the front end does not detect the coil end sag, the limit switch 15 does not operate and the control device 20 is informed that no detection has occurred. It is identified by the discriminating unit 21, and accordingly, the control device 20 passes through the control unit 22 to stop the alignment of the coil carrier 1 to the central portion of the fixed skid 11,
Lifting of the coil 12 by raising the elevating skid 10, traveling of the coil carrier truck 1, stopping alignment with the fixed destination skid 11, coil 1 by lowering the elevator skid 10.
The continuous operation is repeated in the order of the transfer to the fixed skid 11 and the traveling of the coil carrier 1.

On the other hand, when the empty coil carrier 1 enters the fixed skid 11 and the contact-type coil end detection means 13 at the front end detects the coil end sagging through the linear contact portion 16, the limit switch 15 operates. Then, the detection signal is transmitted to the control device 20 and is discriminated by the discriminating portion 21. As a result, the control device 20 causes the coil transporting vehicle 1 to be automatically stopped by the control portion 23 in an emergency and the driving instruction standby state is maintained. Due to this emergency automatic stop, the coil end hanging portion 12a is stopped at a distance from the lifting skid 10 of the coil carrier truck 1, and contact and collision with various other sensors and equipment on the truck are stopped. It can be surely prevented. An alarm generated by the control from the control unit 23 together with the emergency automatic stop causes the cause of the coil end to be released at the urgent stop site of the truck by canceling the cause, that is, by replacing the coil 12 that makes the coil end descent portion 12a of the fixed skid 11 sideways. It is possible to cancel the drooping, then give an instruction to return to the continuous operation, and continue the normal operation again. As a result, the coil end on the fixed skid 11 does not depend on the visual observation of the operator for the coil 12 to be coiled by the coil carrier 1 itself.
It is possible to automatically detect immediately before lifting the vehicle and reliably avoid a collision between the coil 12 and each part of the carriage.

[0012]

In summary, according to the present invention, the contact type detecting means for detecting the coil end sag on the fixed skid, which is provided at the position on the carriage of the longitudinal skid extension line of the coil carrier, and the coil carrier. A coil end drooping on the fixed skid is provided on the fixed skid by having a control device which is provided on or outside the carriage and puts the coil carrier carriage in an emergency stop state and waits for a driving instruction by a contact detection signal from the contact type detection means. Can be automatically detected immediately before the coil is lifted by the coil carrier, and it is possible to avoid collisions between the coil and each part of the carrier, and it is possible to automate the coil carrier by automatically detecting the coil end drooping. Since the device is obtained, the present invention is extremely useful in industry.

[Brief description of drawings]

FIG. 1 is a side view of a coil carrier truck having an embodiment of a coil end drooping automatic detection control device according to the present invention.

FIG. 2 is an end view taken along line II-II of FIG.

FIG. 3 is a side view of an operating state of the contact type coil end detecting means.

FIG. 4 is a block diagram showing a configuration of a control device.

FIG. 5 is a flow chart of the driving operation of the automatic detection control device.

FIG. 6 is a perspective view of another embodiment of the contact type coil end detecting means.

[Explanation of symbols]

 1 Coil carrier 10 Lifting skid 11 Fixed skid 12 Coil 12a Coil end hanging part 13 Contact type coil end detecting means 15, 15 'Limit switch 16 Linear contact part 16' Plate, frame contact part 20 Controller 21 Discriminating part 22 Continuous operation control unit 23 Emergency stop control unit

Claims (1)

[Claims] 1. A contact type detection means for detecting coil end sag on a fixed ski, which is provided at a position on the carriage of an extension line of a longitudinal skid of a coil carrier, and a coil-type carrier or outside the same carrier. A coil end drooping automatic detection control device, comprising: a control device which is provided and which puts the coil carrier vehicle into an emergency stop and waits for a driving instruction in response to a contact detection signal from the contact type detection means.