JP2004099328A - Device for detecting abnormality in rope of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for detecting an abnormality in a rope that can improve the work safety and enhance reliability of measured data. <P>SOLUTION: This device 10 for detecting an abnormality in a rope includes a detector 11 for detecting magnetically an abnormality such as wire breakage by approaching to a rope 40 including a steel wire, and a signal processing portion 12 for processing a signal obtained from the detector 11. There is provided a fixture 30 for holding and fixing the device 10 at a predetermined location within an elevator hoistway where the rope 40 moves relatively and an interval from the travel passage of the rope 4 is in a fixed position. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to an apparatus for detecting an abnormality of an elevator rope.

Conventionally, for preventive maintenance of the rope that pulls the elevator car, the inspector moves the rope at the inspection speed to check for abnormalities due to partial breakage of the strands of the steel wire that composes the rope. A probe of a rope tester is approached by hand, and the detection output is recorded on a recording paper for measurement. The probe makes use of the fact that the rope is made of steel wire, forms a magnetic loop including a part of the rope, and detects a change in the magnetic field intensity generated due to a break or the like by a sensor.

However, the distance between the probe and the rope was not constant, so that the measurement accuracy was not improved, and the workability was low and the measurement required a long time.

The present invention is to provide a rope abnormality detecting device which can solve the above-mentioned inconveniences and can improve work safety and reliability of measurement data.

The present invention relates to a rope abnormality detection comprising: a detection unit that magnetically detects an abnormality such as a broken wire in the vicinity of a rope including a steel wire; and a signal processing unit that processes a signal obtained from the detection unit. And a fixture for holding and attaching the rope abnormality detection device at a predetermined position in the elevator hoistway where the rope moves relatively and the distance between the rope and the traveling path is constant. It is in the rope abnormality detection device. This eliminates the need to move the probe or the like close to the rope by hand, thereby improving work safety and improving the reliability of measurement data.

Further, the present invention is the rope abnormality detecting device, wherein the rope abnormality detecting device is configured to be detachable from the fixture. The detection device can be easily carried and mounted.

Further, the present invention resides in a rope abnormality detection device, wherein the detection unit and the signal processing unit are separable and attached to the fixture integrally or separately. Work safety can be improved and the mounting position range can be expanded.

Further, the present invention is the rope abnormality detecting device, wherein the fixing device is installed in an upper portion of a hoistway of an elevator or near a hoist provided in a machine room. The range of the installation position of the device is widened, and the range of the rope measurement can be widened.

Further, the present invention is the rope abnormality detecting device, wherein the fixing tool is installed near a hoisting machine provided in an elevator pit. The range of the installation position of the device is widened, and the range of the rope measurement can be widened.

Further, the present invention is the rope abnormality detecting device, wherein the fixing device is installed near the main rope near the deflecting sheave of the main rope of the elevator. The range of the installation position of the device is widened, and the range of the rope measurement can be widened.

Further, the present invention resides in a rope abnormality detecting device, wherein the fixing device is installed in an elevator car. The range of the installation position of the device is widened, and the range of the rope measurement can be widened.

Further, the present invention is the rope abnormality detecting device, wherein the fixing tool is installed near the counterweight sheave of the elevator. The range of the installation position of the device is widened, and the range of the rope measurement can be widened.

Further, the present invention relates to a plurality of main ropes for pulling an elevator car in which ropes are arranged in parallel, and a rope abnormality detecting device in which a fixing device is installed at a predetermined position in an elevator hoistway that relatively moves in parallel. It is in. Rope with different rope diameter can be measured at the same time.

Further, the present invention resides in a rope abnormality detecting device for an elevator, in which one or a plurality of main ropes are installed on a fixture, which is capable of simultaneously detecting an abnormality of one or a plurality of main ropes. Measurement time can be reduced.

Further, the present invention resides in a rope abnormality detecting device for an elevator, wherein a plurality of fixtures are provided and a plurality of rope abnormality detecting devices are installed. Measurement time can be reduced.

Further, the present invention resides in a rope abnormality detection device for an elevator, wherein a rope abnormality detection device capable of detecting either the elevator inspection speed or the elevator rated speed is permanently fixed to a fixture. Measurement time can be reduced.

Further, in the present invention, when the signal processing unit has a memory function and detects an abnormal value equal to or greater than a predetermined set value, the signal processing unit includes a unit that records the abnormal value in the memory function. It is in the abnormality detection device. The collection and management of JOB data becomes easier and preventive maintenance can be achieved.

Further, the present invention relates to a rope abnormality detecting device, wherein a rope abnormality detecting device is connected to an elevator remote monitoring device, and when an abnormal value exceeding a certain set value is detected, the abnormal value is transmitted to a remote monitoring terminal. It is in. Preventive maintenance and labor saving can be achieved.

The present invention is also directed to a rope abnormality detection device including a remote control device for turning on and off the power of the rope abnormality detection device from a remote place. As a result, work safety can be improved.

According to the present invention, it is possible to obtain a rope abnormality detecting device capable of improving work safety and reliability of measurement data.

FIGS. 1 and 2 show a rope abnormality detecting device according to an embodiment of the present invention. The rope abnormality detection device 10 includes a detection unit 11 and a signal processing unit 12, which are separately formed as shown in FIG. 1C and are mechanically connected by a joint unit 13. The joint 13 is configured to be able to slide and join the concave portion 13a on the back surface of the detecting portion 11 and the convex portion 13b on the side surface of the signal processing portion 12, and a contact (not shown) provided in the joint portion allows It is electrically connected.

The detection unit 11 has a channel groove 14 through which a plurality of ropes 40a, 40b,... Suspended to pull the elevator car are arranged in parallel and individually passes through a main groove 40. , Will be closed.

A light receiving unit 16 is arranged on the surface of the lid 15, and is configured to be able to switch on and off a power supply (not shown) of the detecting unit 11 and the signal processing unit 12 by receiving an optical signal from the remote controller 17. You. Reference numeral 18 denotes a handle of the abnormality detection device 10.

Each channel of the detecting section 11 forms a magnetic path loop between the running direction of the rope that moves relatively close to the detecting section 11 and detects a change in the magnetic field intensity with a Hall sensor arranged in the magnetic field, thereby forming a magnetic field. With a magnet and a sensor. In other words, the main rope of the elevator is formed by winding a strand of steel wire around the core wire to form a strand, and is formed by winding a plurality of the strands around the core rope, and for a long time, When an excessive force is applied, a part of the strand may be broken. If there is a break in the strand, the magnetic field will be disturbed at the position of the channel of the detection unit through which the rope passes, and this disturbance will be captured by the sensor, taken out as a signal and sent to the signal processing unit 12, where the rope will break. The position is measured, and an abnormality of the rope is detected.

As shown in FIGS. 1A and 1B, the signal processing unit 12 has a waveform monitor 21, a power switch 22, a power lamp 23, a variable rotary switch 24 for setting a rope running speed, and an operation switch 25 on the front. The power outlet 26 is disposed on the side. AC power or battery power can be used. With the switch 24, both the elevator inspection speed and the elevator rated speed can be measured.

信号 The signal processing unit has a memory function, and when an abnormal value exceeding a predetermined set value is detected, the abnormal value can be recorded in the memory function and displayed on the waveform monitor 21. In addition, it has an outlet 27 connected to an elevator remote monitoring device, and has a function of transmitting an abnormal value to a remote monitoring terminal when an abnormal value equal to or greater than a certain set value is detected.

ね じ A screw hole (not shown) for screwing to the fixture 30 shown in FIG. 2 is provided at the bottom of the housing 28 of the signal processing unit 12.

FIG. 2 shows the fixing device 30 which constitutes the rope abnormality detecting device together with the rope abnormality detecting device 10. The wide L-shaped metal fitting forms an upper surface portion 31 on which the housing of the signal processing unit 12 is mounted, and a side surface portion 32 fixed at a predetermined position in the hoistway. A plurality of through holes 33 are formed in the upper surface portion 31 for screwing the housing 28, and the housing 28 is detachably fixed by screws 34. Further, a screw hole 35 is formed in the side surface portion 32 for fixing the stopper 30 to the car rail shown in FIG. 3, and is fixed to the rail by a bracket 37 with a screw 37.

In the embodiment of FIG. 3, the installation location of the rope abnormality detection device 1 is arranged near the hoisting machine 50.

In the elevator system having no machine room, the hoist 50 is arranged near the ceiling of the hoistway, and both ends of the main rope 40 are fixed to the ceiling of the hoistway. Is suspended on the other side by a sheave. The sheaves of the car are towed by placing a pair of them on the lower side of the car and by letting the main ropes 40 beneath the car. The car and the counterweight move up and down along each car rail 51 and the weight rail 52.

With the ascending and descending, the interval and the position of the main rope 40 are fixed with respect to the traveling path of the main rope 40 at a predetermined position in the hoistway, but there are places where the rope relatively moves. For example, the rope viewed from the hoist and the car rail near the hoist holding the hoist has the same running path, but the rope is moving.

In the present embodiment, the rope abnormality detecting device 1 shown in FIGS. 1 and 2 is attached and fixed to a car rail 51 and a weight rail 52 near the hoisting machine, respectively. The fixture 30 is fixed to the edge of each rail 51 with a bracket 53, and the same applies to the weight rail side. At this position, the running path of the rope does not fluctuate, so that the state of the rope can be accurately measured. Further, the detection accuracy can be further improved by installing the detection devices at two places.

4A, the fixing device 30 may be directly attached to the wall surface 61 of the hoistway 60 by the bracket 62, as shown in FIG. 4A, and the same car as shown in FIG. A plurality of detection devices 1 can be attached to the rail 51.

FIG. 5 shows another embodiment of the detection unit 11 of the rope abnormality detection device. (A) corresponds to a main rope 40 composed of a plurality of ropes 40a, 40b, 40c, and 40d arranged in parallel with a plurality of, in this case, two detection units 11a and 11b. 30a. The signal processing units 12a and 12b may be combined with the respective detection units, or one signal processing unit (12a or 12b) may process the signals of both the detection units. Simultaneous measurement is possible even when the rope diameter of the main rope is different or the number of ropes is larger than the number of channels in the detection unit, and the measurement time can be reduced.

FIG. 5 (b) shows an embodiment of the detection unit 11c that detects a plurality of ropes 40a, 40b, 40c, 40d collectively in one channel 14c. The distance between the ropes running in parallel is about 3 mm. For example, it is not easy to insert the partition 14a separating the channels 14 shown in FIG. 1 between the narrow ropes in a non-contact manner. By performing the inspection, the measurement can be easily performed. If an abnormal part is found, the position can be further inspected to enable highly accurate abnormality detection.

6 to 9 relate to the mounting position of the rope abnormality detecting device of the present invention. 1 to 4 denote the same parts.

In the embodiment of FIG. 6, the detection unit 11 and the signal processing unit 12 are separated and separately mounted on the car rail 51 near the hoisting machine 50. The detection unit and the signal processing unit are connected by a cable 55. It is easy to carry, and it is easy to work because it is installed separately in a narrow space.

In the embodiment of FIG. 7, the rope abnormality detecting device 1 is attached to the bottom 71 of the car 70, and the abnormality of the rope 40 traveling between the pair of car sheaves 72 and 73 provided at the bottom is detected. Even if the car 70 moves up and down, the positional relationship between the bottom 71 and the rope running path does not change, so that measurement becomes possible. Thereby, the rope measurement range can be extended. Further, another rope abnormality detection device 1 can be arranged near the hoisting machine 50, and the measurement range of the rope can be expanded together with the device 1 attached to the bottom of the car. Reference numeral 56 denotes a solaceive of a hoist.

実 施 The embodiment of FIG. 8 shows a configuration in which the rope abnormality detection device 1 is installed on the car ceiling 74 while the embodiment of FIG. 7 is installed on the car bottom 71. In many cases, the inspection work of the elevator is performed on the ceiling of the car 70, and the workability can be improved by installing the detection device 1 at this location. Further, it is possible to increase the rope measurement range by installing the detection device 1 in other places.

In the embodiment shown in FIG. 9, the rope abnormality detecting device 1 is arranged near the sheave 76 of the counterweight 75. In the elevator system in which a hoist is installed near the ceiling of the hoistway without a machine room, one end of the rope is supported at or near the ceiling, so that the measurement of the rope 40 from the support portion 77 to the balancing weight 75 is performed. By arranging the detection device 1 at the counterweight 75, anomaly detection measurement becomes possible.

In the embodiment of FIG. 10, the output of the rope abnormality detection device 1 can be taken out by a control panel 80 installed in a hoistway 60 via a cable 81 and monitored at an information center 83 by a communication network 82 such as a telephone line. It was made possible. The rope abnormality detecting device 1 is always installed, and it is possible to always deal with the occurrence of the abnormality to prevent the maintenance and save labor.

In the present embodiment as well, in the embodiment shown in FIG. 1, when a signal processing unit detects an abnormal value of a setting value abnormality, the signal processing unit is provided with a memory function for recording the abnormal value. , It is possible to determine whether the rope is abnormal.

In the present embodiment, the abnormal value record can be transmitted to the remote monitoring terminal of the information center 83 to perform preventive maintenance of the elevator operation.

In the embodiment shown in FIG. 11, the rope abnormality detection device 1 is installed on the beam 91 near the hoisting machine 90 in the machine room type elevator system. The vicinity of the hoist is where the rope moves over a wide range, and a wide measurement range can be secured.

The embodiment of FIG. 12 measures the rope 40 by installing the rope abnormality detection device 1 on the pit wall 64 near the hoisting machine 92 in an elevator in which the hoisting machine 92 is arranged in the pit 63 of the hoistway 60. It is. The vicinity of the hoist is where the rope moves over a wide range, and a wide measurement range can be secured.

(A), (b), (c) is a perspective view of one embodiment of the present invention. It is a perspective view of one Embodiment of this invention like FIG. FIG. 6 is a schematic side view of another embodiment of the present invention. (A), (b) is each a schematic side view of other embodiment of this invention. (A), (b) is a top view which shows the modification of a detection part, respectively. FIG. 6 is a schematic side view of another embodiment of the present invention. FIG. 6 is a schematic side view of another embodiment of the present invention. FIG. 6 is a schematic side view of another embodiment of the present invention. FIG. 6 is a schematic side view of another embodiment of the present invention. FIG. 6 is a schematic side view of another embodiment of the present invention. FIG. 6 is a schematic side view of another embodiment of the present invention. FIG. 6 is a schematic side view of another embodiment of the present invention.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 ... Rope abnormality detection apparatus 10 ... Rope abnormality detection apparatus 11 ... Detection part 12 ... Signal processing part 14 ... Channel 15 ... Lid 16 ... Light receiving part 17 ... Remote controller 30 ... Fixture 40 ... Main rope 50 ... Hoisting machine 51 … Cage rail 60… Hoistway 70… Cage 75… Balance weight 80… Control panel 83… Information center 93… Pit

Claims (15)

A detector for magnetically detecting an abnormality such as a broken wire in the vicinity of a rope including a steel wire, and a rope abnormality detection device including a signal processor for processing a signal obtained from the detector; and A rope abnormality of an elevator, comprising: a fixture for holding and attaching the rope abnormality detection device at a predetermined position in the elevator hoistway where the rope moves relatively and the distance between the rope and the traveling path is constant. Detection device. [5] The rope abnormality detection device for an elevator according to claim 1, wherein the rope abnormality detection device is configured to be detachable from a fixture. [4] The rope abnormality detection device for an elevator according to claim 1, wherein the detection unit and the signal processing unit are separable and attached to the fixture integrally or separately. [4] The rope abnormality detection device for an elevator according to claim 1, wherein the fixing tool is installed in an upper portion of a hoistway of the elevator or near a hoist provided in a machine room. [4] The rope abnormality detecting device for an elevator according to claim 1, wherein the fixing tool is installed near a hoisting machine provided in a pit of the elevator. [4] The rope abnormality detecting device for an elevator according to claim 1, wherein the fixing tool is installed near the deflecting sheave of the main rope of the elevator and close to the main rope. [4] The rope abnormality detecting device for an elevator according to claim 1, wherein the fixture is installed in the elevator car. [5] The rope abnormality detecting device for an elevator according to claim 1, wherein the fixture is installed near the counterweight sheave of the elevator. The rope abnormality detection device according to claim 1, wherein the rope is a plurality of main ropes that are arranged in parallel to pull an elevator car, and a fixing device is installed at a predetermined position in an elevator hoistway that relatively moves in parallel. Elevator rope abnormality detection device. The rope abnormality detecting device according to claim 1, wherein a rope abnormality detecting device capable of simultaneously detecting an abnormality of one or a plurality of main ropes is provided on an elevator rope having one or a plurality of fixed ropes. Anomaly detection device. 11. The rope abnormality detection device for an elevator according to claim 10, wherein a plurality of fixtures are provided and a plurality of rope abnormality detection devices are installed. (4) An elevator rope abnormality detecting device, wherein the rope abnormality detecting device according to claim 1 is capable of being detected at any one of an elevator inspection speed and an elevator rated speed. The rope abnormality detecting device according to claim 1, wherein the signal processing unit has a memory function, and when detecting an abnormal value equal to or more than a predetermined set value, includes a means for recording the abnormal value in the memory function. An elevator rope abnormality detecting device, comprising: The rope abnormality detection device according to claim 1, wherein the rope abnormality detection device is connected to an elevator remote monitoring device, and when an abnormality value equal to or greater than a certain set value is detected, transmitting the abnormality value to the remote monitoring terminal. Characteristic device for detecting rope abnormalities in elevators. [4] The rope abnormality detection device for an elevator according to claim 1, further comprising a remote control device for turning on and off a power supply of the rope abnormality detection device from a remote place.

Images