KR200331448Y1 - An apparatus for inspecting and guiding wire ropes in crane - Google Patents

Abstract

The present invention relates to a device for inspecting and guiding wire rope of a overhead crane for lifting and transporting heavy goods in a limited working space of various industrial sites.

The present invention is provided with a wheel that moves along the drum groove of the wire rope, wire rope length measuring unit for transmitting a signal for measuring the loose length of the wire rope while moving with the wheel; A wire rope photographing unit which allows a driver to check the wire state of the wire rope captured by the camera; and a wire cylinder capable of rotating the wire rope according to the unwinding length of the wire rope measured by the wire rope length measuring unit. It provides a wire rope derailment check device comprising a; wire rope fixing portion for supporting the wire rope so as not to be separated from the drum groove having a pair of pressure rollers to support.

According to the present invention, the wire rope is prevented from being separated from the drum groove due to heavy weight shaking during the operation of the overhead crane, and the life span can be extended, and the wire abrasion check can be managed remotely in the cab to prevent worker safety accidents. Therefore, the effect which prevents a facility accident in advance and contributes to the improvement of operation productivity is acquired.

Description

Wire rope derailment checker {AN APPARATUS FOR INSPECTING AND GUIDING WIRE ROPES IN CRANE}

The present invention relates to a device for checking and guiding a wire rope of a overhead crane that lifts and transports heavy materials in a limited working space of various industrial sites. More specifically, the wire rope is caused by heavy weight shaking during operation of the overhead crane. It prevents the drum groove from escaping and extends its lifespan, and the wire abrasion check can be managed remotely in the cab to prevent worker safety accidents and to prevent derailing from the sieve due to the excessive drop of wire rope. The present invention relates to an improved wire rope derailment check apparatus for preventing equipment accidents in advance and contributing to an improvement in operating productivity.

In general, the overhead crane 100 that is used in various industrial sites, as shown in Figure 1, the work of winding the heavy object 110 by a hook. At this time, the wire rope 120 is wound by rotating the cylindrical drum 132 provided in the main grab 130, wherein the wire rope 120 is shaken due to the weight of the lower weight (110). .

The shaking of the heavy object 110 is transmitted directly to the wire rope 120, and also on the drum 132 of the main grab 130 to allow the wire rope 120 to leave the drum groove 135 carved into the drum 132 Cause problems.

When the wire rope 120 is frequently separated from the drum groove 135 as described above, the wire rope 120 is partially shorted by friction and abrasion at that time, thereby significantly reducing the life of the wire rope 120. .

In addition, the wire rope 120 of the overhead crane 100 is one of the major facilities in the mechanical field of the overhead crane 100, the daily inspection of the degree of damage, which is the worker when the equipment inspection area There is a problem of exposure to safety accidents by performing inspections.

In addition, the wire ropes 120 are managed based on the nominal diameter 7% wear and wire wear of the wire rope 120 as a wear limit of 10%, which is part of the wire rope 120 wear during operation It is very difficult to find out where the wire rope 120 is out of the limit of wear even if it is out of the limit, or where the wire break 120 is caused by wire breakage and fatigue corrosion. have.

Therefore, the conventional way in which the worker visually observes the wire rope 120 has many problems.

In addition, in the related art, when the vehicle is excessively unloaded due to a driver's operation error or when the heavy object 110 contacts the lower bogie 150, the wire rope 120 slumps and the wire rope 120 is derailed in the sheave. The case was frequent. That is, the conventional overhead crane 100 has no means for stopping the wire rope 120 when the wire rope 120 is slid from the drum 132 and leaves the drum groove 135, so that the detachment of the wire rope 120 is performed. Frequently, accidents occurred frequently during the operation of the overhead crane 100.

The present invention is devised to solve the above conventional problems, its purpose is to prevent the wire rope from being separated from the drum groove due to heavy weight shaking during operation of the overhead crane to extend the life, check the wear of wire It is to provide a wire rope derailment check device that can be managed remotely in the cab to prevent worker accidents.

In addition, the present invention reinforces the inspection by subdividing the wire rope, which is a large facility, in milli units, and in particular, prevents the wire rope from being derailed from the sieve due to overload, thereby preventing equipment accidents in advance, and improving the productivity of the operation. The purpose is to provide an improved wire rope derailment checker to contribute to the

1 is a structural view showing a general overhead crane according to the prior art;

2 is a block diagram showing a state in which the wire rope is separated from the groove of the wire drum equipped with a general overhead crane according to the prior art;

3 is an explanatory diagram showing a state in which a wire rope is overloaded and stretched in a general overhead crane according to the related art, and the wire rope is separated from the drum groove or the sieve;

Figure 4 is a side view showing a wire rope deviation check device according to the present invention;

5 is a side view showing the structure of the wire rope fixing unit provided in the wire rope derailment check device according to the present invention;

6 is a side view showing the structure of the wire rope length measuring unit and the photographing unit provided in the wire rope derailment checking apparatus according to the present invention;

7 is a front view showing the structure of the wire rope length measuring unit and the photographing unit provided in the wire rope derailment check device according to the present invention;

8 is a detailed view illustrating a monitor structure of a photographing unit provided in the wire rope derailment checking apparatus according to the present invention.

<Description of the symbols for the main parts of the drawings>

1 .... wire rope derailment checker

10 ... wire rope length measuring part 12 ... wheel

14 ... crossbar 16 .... mobile stand

20 .... Pulse Generator

24 .... weight 26 .... leg

30 .... Wire Rope Shooter 32 .... Burn Camera

34 ... monitor 40 ... millimeter

42 .... Centimeter Unit 44 .... Wire Rope Position Display

50 .... wire rope fixing 52 .... driving cylinder

54 ... pressure roller pair 70 ... limit switch

100 .... overhead crane 110 ..... heavy

120 ... wire rope 130 ... main grab

132 .. Cylindrical Drum 135 .... Drum Groove

150 .... Lower bogie

In order to achieve the above object, the present invention, in the device for checking and guiding the wire rope of the overhead crane for lifting and transporting heavy objects in various industrial sites,

A wire rope length measuring unit having a wheel moving along the drum groove of the wire rope and transmitting a signal for measuring the loosened length of the wire rope while moving together with the wheel; A wire having a camera mounted on a moving object of the wire rope length measuring unit and having a monitor for outputting an image measured by the camera in a cab to allow the driver to check the burnout state of the wire rope captured by the camera. And a pressurizing roller having a pair of drive cylinders operated according to the unwinding length of the wire rope measured by the wire rope length measuring unit and operated by the respective drive cylinders to rotatably support the wire rope. By providing a wire rope derailment check device comprising a; wire rope fixing portion for supporting the wire rope to prevent the wire rope from being separated from the drum groove.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

The wire rope derailment checking device 1 according to the present invention has a wheel 12 moving along the drum groove 135 of the wire rope 120, as shown in FIG. 4, together with the wheel 12. It is provided with a wire rope length measuring unit 10 for transmitting a signal for measuring the loosened length of the wire rope 120 while moving.

The wire rope measuring unit 10 has a cross bar 14 extending horizontally along the drum 132 on one side of the wire drum 132 at a predetermined height from the bottom surface of the main grab 130, and the cross bar. Each of the moving bases 16 disposed on both sides of the drum 132 is fixed to 14 to be slidable.

Since the wire rope measuring unit 10 has the same structure on both sides of the drum 132 and is formed, the wire rope measuring unit 10 will be described in more detail with respect to any one of them, and the same reference numerals are given to the remaining parts. Shall be.

The wire rope length measuring unit 10 includes a wheel 12 on the movable table 16, and the wheel 12 is disposed in contact with the drum groove 135 to move along the drum groove 135. . In addition, an instrumentation device, such as a pulse generator (20), is mounted on the rotating shaft of the wheel 12 to transmit an electrical signal to the cab.

That is, when the wheel 12 moves along the drum groove 135, the number of revolutions is detected to detect how much the drum 132 is rotated, which is a wire rope 120 wound around the drum groove 135. ) Is to let the operator of the cab know how much. In addition, a weight weight 24 is provided below the movable table 16 to allow the wheel 12 to be in close contact with the drum groove 135 to move along the drum groove 135 in accordance with the rotation of the drum 132. Hang

As shown in FIG. 6, the weight 24 extends through the legs 26 toward the lower side of the movable table 16, and the center of gravity P thereof is biased toward the wire rope drum 132 side. The wheel 12 extending toward the upper side of the movable table 16 by its own weight is in close contact with the drum groove 135.

In addition, the present invention includes a camera (32) mounted on the movable table (16) of the wire rope length measuring unit (10), and outputs a monitor (34) for outputting the image measured by the camera (32). It is provided with a wire rope photographing portion 30 provided in the cab for the driver to check the wire state of the wire rope 120 captured by the camera 32.

The wire rope photographing unit 30 is mounted to the image camera 32 through the bracket 38 on one side of the movable table 16, the image camera 32 is electrically connected to the monitor 34 of the cab do.

As shown in FIG. 8, the monitor 34 has a millimeter unit plate 40 on the right side and a centimeter unit plate 42 on the upper side thereof, and a lower side of the monitor 34 on the side of the monitor 34. The wire rope position display window 44 for outputting the signal of the wire rope length measuring unit 10 as a numerical value is installed.

That is, the monitor 34 photographs the loose length of the wire rope 120 measured by the wire rope length measuring unit 10 and the wire rope 120 corresponding to the loosened length by the camera 32. And output to the monitor 34.

In addition, the present invention has a pair of drive cylinders 52 that operate according to the unwinding length of the wire rope 120 measured by the wire rope length measuring unit 10, by the respective drive cylinders 52 And a wire rope fixing part 50 which is provided with pressure roller pairs 54 for rotatably supporting the wire rope 120 to support the wire ropes 120 from being separated from the drum groove 135. .

As shown in FIGS. 4 and 5, the wire rope fixing part 50 includes a pair of pressure roller pairs 54 rotatably connected to an upper portion of the bottom surface of the main grab 130. The roller pairs 54 are rotatably connected to the upper end of the connecting rod 56, and the lower end of the connecting rod is rotatably connected to the upper surface of the main grab 130 through the hinge 58. In addition, driving cylinders 52 are disposed on one side of each connecting rod 56, and the rod 52a of the driving cylinder 52 is rotatable through the pin 60 in the middle of the connecting rod 56. To be combined.

This drive cylinder 52 is actuated so that when the rod 52a is pulled out, the dashed line in FIG. 5 allows the pressure roller pairs 54 to clamp and press the wire rope 120 therebetween through the connecting rods 56. It works as shown by the solid line from.

This has the effect of raising and lowering at the correct position by pressing the wire rope 120, the wire rope 120 is clamped by the pressure roller pair 54 is raised and lowered at the correct position in the drum groove (135) will not fall out.

On the other hand, the pressure roller pair 54 is a length extending in a longitudinal direction in the longitudinal direction of the drum 132 of the wire rope 120 to have a length corresponding to some of the wire drum groove 135, as described above. By having the lengths 54, the wire rope 120 moves correctly along the drum groove 135 when the wire rope 120 is wound or unwound along the drum groove 135 when the wire drum 132 is rotated. Make it as possible.

The time point at which the pair of drive cylinders 52 operate is operated according to the unwinding length of the wire rope 120 measured by the wire rope length measuring unit 10. That is, the wire rope 120 is excessively unloaded, or the heavy object 110 contacts the lower bogie 150 to cause the wire rope 120 to sway frequently, for example, the wire rope from the drum 132. When the corresponding signal is input from the wire rope length measuring unit 10 by setting a predetermined section of the unwinding length 120, the driving cylinder 52 operates to move up and down in a state where the wire rope 120 is fixed. It is to give.

This is because when the wire rope 120 slid from the drum 132 and leaves the drum groove 135 in the conventional overhead crane 100, there is no means to stop the wire rope 120, so the separation of the wire rope 120 Frequently, accidents occur frequently during the operation of the overhead crane 100, but in the present invention, the pressure roller pairs 54 are moved up and down while the wire rope 120 is firmly fixed. Even if the rocking of the wire rope 120 occurs, the wire rope 120 is not separated from the drum groove 135.

Reference numeral 70 is a limit switch, respectively located on both sides of the pressure rollers in contact with the wire rope 120 to send an electrical signal to the control panel of the cab (not shown) by the wire rope fixing portion 50 Drive cylinders 52 are operated to perform the release operation.

When the wire rope 120 is unwinded and lowered by the rotation of the wire drum 132, the moving table 16 disposed in the center of the drum 132 may be wheeled according to the rotation of the drum 132. 12, the wire rope length measuring unit 10 is electrically connected to the length of the wire rope 120 released from the drum 132 to the cab while moving along the drum groove 135 to both sides of the drum 132, respectively. It is sending out a signal.

At the same time, the camera 32 of the wire rope photographing unit 30 is mounted on the moving table 16 and continuously photographs the wire rope 120 released from the drum groove 135 while moving along the crossbar 14. Output on the monitor 34.

Therefore, the driver can accurately grasp the length of the wire rope 120 released from the current drum 132 and the burnout wear state of the wire rope 120 in the length portion thereof through the monitor 34 in the cab.

Then, when the wire rope 120 reaches a predetermined length of the length released from the drum 132, the drive cylinders 52 of the wire rope fixing part 50 is operated so that the pressure roller pairs 54 are wire rope ( 120) is to be pinched, and ascend and descend in a fixed state. When the wire rope 120 is rotated so as to be rotatable, the pair of pressing roller pairs 54 are connected to the wire rope (when the wire rope 120 slumps from the drum 132 and leaves the drum groove 135). As the lifting and lowering is performed while the 120 is firmly fixed, the wire rope 120 is not separated from the drum groove 135 even when the wire rope 120 is slumped.

In addition, since the pressing roller pairs 54 have a long roller structure extending in the longitudinal direction of the drum 132, the roller rollers 54 accommodate the unwinding and winding of the wire rope 120 over several drum grooves 135. You can do it.

In addition, the limit switches 70 positioned at both sides of the pressing roller pairs 54 may transmit an electrical signal when the wire rope 120 contacts any one of the limit switches 70. By operating to release the drive cylinder 52 through the control panel of the pressure roller pairs 54 to the left and right to release the wire rope 120.

Therefore, the wire rope 120 is released from the pressure roller pairs 54 to be wound on the drum 132 except for a predetermined period in which the driving cylinder 52 is operated, or to be unwound.

According to the present invention as described above, the wire rope 120 is derailed from the groove 135 installed in the wire rope drum 132 due to shaking during the production operation in the field pressure roller pair of the wire rope fixing portion 50 By using the (54) can be prevented in advance to prevent the departure of the drum groove 135 of the wire rope 120 to extend the life.

In addition, in checking the wear and diameter reduction values of the wire rope 120, a checker needs to approach the rotating body called the drum 132 at a narrow place of the height to perform a check operation. By remotely investigating, it is possible to prevent worker's safety accident in advance, and also to reduce the inspection work time and the inspection workforce.

In particular, when abnormalities of the wire rope facility can be carried out by smoothly tracking the abnormal location by the length of the wire rope 120 to prevent the maintenance of large-scale equipment accidents in advance, to solve the workers' anxiety and productivity The effect of removing the inhibitors and significantly reducing maintenance costs is expected.

Claims (5)

In the device for inspecting and guiding the wire rope 120 of the overhead crane 100 for lifting and transporting the heavy material 110 in various industrial sites, Wire rope length measurement having a wheel 12 moving along the drum groove 135 of the wire rope 120, and transmits a signal measuring the loosened length of the wire rope 120 while moving with the wheel 12 Part 10; A camera (34) mounted on the movable table (16) of the wire rope length measuring unit (10), and having a monitor (34) for outputting an image measured by the camera (32) in the cab; A wire rope photographing unit 30 for allowing a driver to check the wire state of the wire rope 120 captured by the camera 32; and According to the unwinding length of the wire rope 120 measured by the wire rope length measuring unit 10, it has a pair of drive cylinders 52 that operate, and is operated by each of the drive cylinders 52 and the wire rope ( And a wire rope fixing part (50) for supporting the wire ropes (120) so as not to be separated from the drum groove (135) by having a pair of pressure rollers (54) for rotatably supporting the (120). Wire rope derailment checker. According to claim 1, The wire rope measuring unit 10 has a horizontal cross 14 extending horizontally along the drum 132 on one side of the wire drum 132 from the bottom surface of the main grab (130) It is placed in the rising position, the cross bars 14, respectively fixed to the movable bases 16 which are arranged on both sides of the drum 132 so as to be slidable, and the rotary shaft of the wheel 12, the pulse generator (Pulse Generator) (20) The instrumentation device is configured to transmit an electrical signal, and the wheel 12 is in close contact with the drum groove 135 at the lower side of the movable table 16, so that the drum groove ( 135 is a wire rope derailment check device, characterized in that provided with a weight (24) to move along. According to claim 1, The monitor 34 has a millimeter unit plate 40 and a centimeter unit plate 42 to the upper side thereof, the lower side of the monitor 34, the wire rope length measuring unit ( Wire rope derailment check device, characterized in that the wire rope position display window 44 that the signal of 10) is output as a number is installed. The wire drum according to claim 1, wherein the pressure roller pairs 54 extend in a predetermined length in the longitudinal direction of the drum 132 of the wire rope 120 to have a length corresponding to some of the wire drum grooves 135. When the wire rope 120 is wound or unrolled along the drum groove 135 at the time of rotation of the wire 132, the wire rope 120 allows the wire rope 120 to be accurately moved along the drum groove 135. Derailment check device. The driving of the wire rope fixing part 50 according to claim 1, wherein both sides of the pressure roller pairs 54 are in contact with the wire rope 120 to transmit an electrical signal to a control panel of a cab (not shown). Wire rope derailment check device, characterized in that the limit switch (70) for operating the cylinder 52 to operate to release the action.