Device for detecting defects in driving ropes of elevators

Abstract

The present invention relates to a drive rope defect detection device for an elevator, and provides the following drive rope defect detection device for an elevator, namely, it can use the structural characteristics of a hook and loop module combined with the end of the drive rope to detect and monitor in real time whether the drive rope has defects, without the need for an operator to perform periodic inspections using a separate diagnostic device, and in addition to external defects of the drive rope, it can also accurately detect all internal defects, and can detect defects in the drive rope by detecting whether the hook and loop module combined with the end of the drive rope moves upward. Therefore, it can also be conveniently applied to existing elevator systems without changing or replacing the previously set configuration, and can achieve a simple structure and miniaturization, thereby being easy to set up and maintain.

Description

Technical Field

[0001] The present invention relates to a drive rope defect detection device for an elevator. More specifically, it relates to a drive rope defect detection device for an elevator, which can detect and monitor whether a drive rope has defects in real time by using the structural characteristics of a hook and loop module coupled to the end of the drive rope, without the need for an operator to perform periodic inspections using a separate diagnostic device, and can accurately detect all internal defects in addition to external defects of the drive rope, and can detect defects of the drive rope by detecting whether the hook and loop module coupled to the end of the drive rope moves upward, so that it can also be conveniently applied to an existing elevator system without changing or replacing the previously set configuration, and can achieve a simple structure and miniaturization, thereby being easy to set up and maintain. Background Art

[0002] Generally, elevator devices are installed in various types of high-rise buildings constructed for residential use, business use, etc., so that passengers visiting the buildings can move smoothly in the vertical direction.

[0003] A general lifting mechanism is in the form of an elevator car arranged in a lifting passage in a manner that allows it to be raised and lowered, a counterweight connected to the elevator car by a driving rope, and a traction machine that drives the elevator car and the counterweight to rise and fall by rotating forward and reversely through frictional contact with the driving rope on the upper side of the lifting passage.

[0004] Figure 1 This is a diagram conceptually showing the working structure of a general elevator device. Figure 2 This is a perspective view schematically showing a fixing support structure for a driving rope of a general elevator device.

[0005] like Figure 1 As shown, the elevator car 10 and the counterweight 20 are respectively supported on both sides of a driving rope W wound around a traction machine pulley 30, and move up and down in opposite directions as the traction machine is driven.

[0006] The upper parts of the elevator car 10 and the counterweight 20 are respectively connected to the moving pulleys 40, and the driving rope W extends from the traction machine pulley 30, and is wound around each moving pulley 40 in the middle section, and the end is connected and fixed to a separate hook module 100. In this case, a plurality of driving ropes W are usually provided, and they are respectively connected and fixed to a plurality of hook modules 100.

[0007] like Figure 2As shown, the hook and loop module 100 is configured to include a coupling member 110 coupled to the end of the driving rope W, and a support rod 120 extending upward from the coupling member 110, and the support rod 120 is elastically supported upward on a separate fixing member 320 by the elastic force of an elastic spring 200. The fixing member 320 is formed in a flat plate form and is fixedly supported in the horizontal direction by a separate supporting frame 310.

[0008] In this way, since the elevator car is actually supported by the drive rope W, damage to the drive rope may cause extremely dangerous accidents such as the elevator car falling. For the safe operation of the elevator, the drive rope should be periodically checked for damage or defects.

[0009] Generally, when performing maintenance work on an elevator, a separate driving rope diagnostic device is used to detect a defect in the driving rope. However, since the detection of the defect in the driving rope using the separate diagnostic device is only performed during maintenance work, it is not possible to continuously monitor whether the driving rope has a defect in real time, and thus it is not possible to prevent the risk of safety accidents without fail. In addition, since the detection of the defect in the driving rope using the separate diagnostic device has the inconvenience that the diagnostic work for the driving rope is relatively complicated and time-consuming.

[0010] Meanwhile, since a general diagnostic device is formed in a manner of detecting external defects exposed to the outside of the drive rope, there is a problem that it is difficult to accurately detect internal defects of the drive rope.

[0011] Prior art literature

[0012] Patent Literature

[0013] Patent document 1: Korean Patent Publication No. 10-2004-0079999. Summary of the invention

[0014] Technical issues

[0015] The present invention aims to solve the problems of the prior art. The purpose of the present invention is to provide a drive rope defect detection device for a lift, which can utilize the structural characteristics of the hook and loop module combined with the end of the drive rope to detect and monitor in real time whether the drive rope has defects, without the need for the operator to perform periodic inspections using a separate diagnostic device, and can accurately detect all internal defects in addition to external defects of the drive rope.

[0016] Another object of the present invention is to provide a drive rope defect detection device for an elevator, which can detect defects in the drive rope by detecting whether the hook and loop module connected to the end of the drive rope moves upward. Therefore, it can be easily applied to the existing elevator system without changing or replacing the previously set configuration, and can achieve a simple structure and miniaturization, thereby being easy to set up and maintain.

[0017] Technical Solution

[0018] The present invention provides a driving rope defect detection device for an elevator, which detects defects in a driving rope connected to an elevator car in a manner capable of driving and pulling the elevator car. The driving rope defect detection device for an elevator comprises: a hook and loop module, a lower end of which is combined with an upper end of the driving rope and is elastically supported upward by an elastic spring and is combined to a separate fixing member, and when a defect occurs in the driving rope, the driving rope is elastically moved upward by the elastic force of the elastic spring; and a detection unit, which detects whether the hook and loop module moves upward above a reference value.

[0019] At this time, the detection unit may include: a working switch, which changes its on / off working state as the hook and loop module moves upward above a reference value; and a linkage unit, which links the hook and loop module with the working switch in such a way that the working state of the working switch changes as the hook and loop module moves upward.

[0020] In addition, the linkage unit may include: a locking body, which is combined with one side of the hook and loop module and moves integrally with the hook and loop module; a working line, which is horizontally arranged at a position spaced apart from the locking body by a specified distance upward in a manner so as to be engaged and pulled by the locking body as the hook and loop module moves upward, and is combined with a movable body capable of moving linearly at one end; and an elastic component, which elastically supports the movable body in a direction to maintain the tension of the working line, the movable body elastically pressurizes the working switch through the elastic force of the elastic component in a manner so as to make the working switch in an open state under a normal state, and releases the elastically pressurized state of the working switch in a manner so as to move in a direction away from the working switch as the working line is pulled by the locking body above a reference value, so that the working switch is in a closed state.

[0021] In addition, one end of the working wire may be fixedly coupled to one side of the fixing member, and the movable body may be coupled to the other side of the fixing member so as to be able to move linearly.

[0022] In addition, the fixing member may include: a fixing plate, which elastically supports the hook and loop module; and a support frame, which is coupled to the two side end portions of the fixing plate in a downwardly protruding manner, one end of the working line is coupled and fixed to one of the support frames, and the movable body can be coupled to the remaining one of the support frames so as to be movable linearly in a horizontal direction, and is elastically supported by the elastic component in a direction away from one end of the working line.

[0023] In addition, multiple driving ropes can be connected to the elevator car, and the driving rope defect detection device of the elevator has multiple hook and loop modules, and the multiple hook and loop modules are arranged in a row in a manner of being respectively combined with the upper ends of the multiple driving ropes, and the detection unit detects whether at least one of the multiple hook and loop modules moves upward above a reference value.

[0024] In addition, the locking body can be respectively coupled to the plurality of hook and loop modules, and the working line is configured to be able to engage and pull with the locking bodies respectively coupled to the plurality of hook and loop modules.

[0025] Effects of the Invention

[0026] According to the present invention, the following effects are achieved, namely, it is possible to utilize the structural characteristics of the hook and loop module coupled to the end of the drive rope to detect and monitor in real time whether a defect occurs in the drive rope, without the need for an operator to perform periodic inspections using a separate diagnostic device, and in addition to external defects of the drive rope, all internal defects can also be accurately detected.

[0027] In addition, it has the following effect, namely, it is possible to detect defects in the driving rope by detecting whether the hook and loop module connected to the end of the driving rope moves upward. Therefore, it can be conveniently applied to the existing elevator system without changing or replacing the previously set configuration, and can achieve a simple structure and miniaturization, thereby being easy to set up and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a diagram conceptually showing the operating structure of a general elevator device.

[0029] Figure 2 This is a perspective view schematically showing a fixing support structure for a driving rope of a general elevator device.

[0030] Figure 3 It is a stereoscopic view schematically showing the configuration of a drive rope defect detection device for an elevator according to one embodiment of the present invention.

[0031] Figure 4 It is enlarged to show Figure 3 Diagram of portion "A" shown.

[0032] Figure 5 It is a working state diagram schematically showing the working state of a driving rope defect detection device of an elevator according to one embodiment of the present invention.

[0033] Reference numerals

[0034] 100: hook and loop module, 110: coupling member, 120: support rod, 200: elastic spring, 320: fixing member, 321: fixing plate, 322: support frame, 400: detection unit, 410: linkage unit, 411: locking body, 412: working line, 413: movable body, 414: elastic member, 420: working switch. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. First, it should be noted that when adding reference symbols to the constituent elements of each figure, the same constituent elements are given the same symbols as much as possible even if they are marked in different figures. In addition, when describing the present invention, when it is determined that the specific description of the relevant known configuration or function may make the gist of the present invention unclear, its detailed description is omitted.

[0036] Figure 3 is a perspective view schematically showing the configuration of a drive rope defect detection device for an elevator according to an embodiment of the present invention, Figure 4 It is enlarged to show Figure 3 The diagram of the "A" section shown, Figure 5 It is a working state diagram schematically showing the working state of a driving rope defect detection device of an elevator according to one embodiment of the present invention.

[0037] A driving rope defect detection device for an elevator according to an embodiment of the present invention is a device for detecting and detecting defects of a driving rope W connected to an elevator car in real time, and is configured to include a hook and loop module 100 and a detection unit 400 .

[0038] Here, the drive rope is used as a concept including various forms of wire ropes, belts, etc. connected to the elevator car in such a manner as to drive and pull the elevator car.

[0039] As described in the background art, the hook and loop module 100 is a device for fixing and supporting the upper end of the driving rope W, and its lower end is combined with the upper end of the driving rope W and is elastically supported upwardly by the elastic spring 200 and combined with a separate fixing member 320 .

[0040] Such a hook and loop module 100 is configured to include a coupling member 110 coupled to the end of the driving rope W, and a support rod 120 extending upward from the coupling member 110, and the support rod 120 is elastically supported upward by a separate fixing member 320 by the elastic force of an elastic spring 200. The fixing member 320 is formed in a flat plate form and is fixedly supported in the horizontal direction by a separate support frame 310.

[0041] Since the hook and loop module 100 is elastically supported upward from the fixing member 320 by the elastic spring 200, when a defect occurs in the driving rope W connected to the lower end of the hook and loop module 100, for example, when a defect occurs such as when the internal twisted wire portion of the driving rope W is cut off, the load transmitted to the driving rope W is reduced, causing the hook and loop module 100 to move upward due to the elastic force of the elastic spring 200.

[0042] In more detail, generally, a driving rope W is provided to support the load of the elevator car, wherein the hook and loop modules 100 are respectively coupled to the upper ends of the plurality of driving ropes W and elastically supported upwardly by the fixing member 320. At this time, the load of the elevator car is equally distributed and acts on the plurality of driving ropes W, and each hook and loop module 100 is elastically supported upwardly by the elastic spring 200 corresponding to the distributed load of the elevator car.

[0043] In this state, when a defect such as internal strand cut occurs in one of the plurality of driving ropes W, the load transfer amount to the elevator car of the driving rope W with the defect is relatively reduced, while the load transfer amount to the remaining driving ropes W is increased. Therefore, the hook module 100 coupled to the driving rope W with the defect moves upward by a certain interval due to the elastic force of the elastic spring 200 because the load transferred through the driving rope W decreases. In this case, the hook module 100 coupled to the remaining driving ropes W moves downward by a certain interval because the load transferred through the driving rope W increases.

[0044] At this time, the distance that the hook module 100 of the defective driving rope W moves upward is smaller than the distance that the hook module 100 of the other normal driving ropes W moves downward. This is because, since the probability of multiple driving ropes W being defective at the same time is very low, it can be assumed that the remaining multiple driving ropes W are all in a normal state when one driving rope W is defective. In this case, since there is only one defective driving rope W and there are multiple normal driving ropes W, the load is dispersed and further transmitted to the other multiple normal driving ropes W according to the load reduction amount transmitted to the defective driving rope W. Therefore, the load increase amount transmitted to the multiple normal driving ropes W is relatively smaller than the load reduction amount transmitted to the one defective driving rope W.

[0045] In this way, since the hook and loop module 100 combined with the end of the driving rope W has a structural characteristic that it will move upward when a defect occurs in the driving rope W, the driving rope defect detection device of the present invention can utilize the characteristics of such a hook and loop module 100 to immediately detect defects of the driving rope W in real time.

[0046] For such detection, a detection unit 400 for detecting the upward movement of the hook and loop module 100 is provided. The detection unit 400 is configured to detect whether the hook and loop module 100 has moved upward by more than a reference value.

[0047] More specifically, the detection unit 400 can be constructed to include: a working switch 420, which changes the on / off working state as the hook and loop module 100 moves upward above a reference value; and a linkage unit 410, which links the hook and loop module 100 with the working switch 420 in such a way that the working state of the working switch 420 changes as the hook and loop module 100 moves upward.

[0048] The linkage unit 410 can be constructed to include: a locking body 411, which is combined with one side of the hook and loop module 100 and moves integrally with the hook and loop module 100; a working line 412, which is horizontally arranged at a position spaced apart from the locking body 411 upward by a specified distance in a manner so as to be engaged and pulled by the locking body 411 as the hook and loop module 100 moves upward, and is combined with a movable body 413 capable of moving in a straight line at one end; and an elastic component 414, which elastically supports the movable body 413 in a direction to maintain the tension of the working line 412.

[0049] The movable body 413 elastically pressurizes the working switch 420 through the elastic force of the elastic component 414 in such a way that the working switch 420 is in an open state under a normal state, and releases the elastically pressurized state of the working switch 420 in such a way that the working line 412 moves in a direction away from the working switch 420 above a reference value as it is pulled by the locking body 411, so that the working switch 420 is in a closed state.

[0050] In more detail, the fixing member 320 may be configured to include: a fixing plate 321, which elastically supports the hook and loop module 100 upward; and a support frame 322, which is protruding downward and is combined with both side ends of the fixing plate 321, one end of the working line 412 is combined and fixed to one of the support frames 322, and the other end is combined with the movable body 413. The movable body 413 can be combined with the other one of the support frames 322 in a horizontal direction and can be linearly moved, and is elastically supported by the elastic member 414 in a direction away from one end of the working line 412. A separate switch bracket 421 is combined with the support frame 322, and the working switch 420 is combined and fixed to the switch bracket 421.

[0051] The locking body 411 can be protruded outwardly and coupled to one side of the support rod 120 of the hook and loop module 100, and the working line 412 is arranged in a straight line at a position separated by a specified distance upward from the locking body 411 in a manner of being pulled and moved by engaging with the locking body 411 through the upward movement of the locking body 411.

[0052] At this time, as mentioned above, a plurality of driving ropes W are provided, and a hook and loop module 100 is combined with each driving rope W. Figure 3 and Figure 5 As shown, the plurality of hook modules 100 and W are arranged in a row in a direction perpendicular to the length direction of the driving rope W, and the locking bodies 411 coupled to the respective hook modules 100 are also arranged in a row in the same direction.

[0053] The detection unit 400 is formed to detect whether at least one of the plurality of hook and loop modules 100 moves upward by more than a reference value. To this end, the working wire 412 is configured to form a straight line along the arrangement direction of the plurality of hook and loop modules 100 in a row so as to be able to engage and pull with the locking bodies 411 respectively coupled to the plurality of hook and loop modules 100. That is, the working wire 412 is configured to form a straight line in a right angle direction (horizontal direction) relative to the length direction of the driving rope W.

[0054] On the other hand, the movable body 413 is coupled to the fixed member 320 in a manner of linearly moving on the same straight line as the linear arrangement direction of the working wire 412, and is elastically supported by the elastic force of the elastic member 414 to maintain the tension of the working wire 412. In addition, the movable body 413 elastically pressurizes the working switch 420 while being elastically supported in one direction by the elastic member 414, so that the working switch 420 is turned on.

[0055] Therefore, if Figure 5 As shown in (a), in a normal state where the driving rope W is not defective, the working line 412 maintains a straight state, the movable body 413 elastically moves to the right direction by the elastic force of the elastic member 414, and maintains a state of elastically pressurizing the working switch 420. The working switch 420 is maintained in an open (ON) state by the elastic pressure of the movable body 413.

[0056] In this state, if one of the multiple drive ropes W is defective, Figure 5As shown in (b), the hook and loop module 100 coupled to the driving rope W moves upward from the fixing member 320 by the elastic force of the elastic spring 200. When the hook and loop module 100 moves upward, the locking body 411 moves upward together with the hook and loop module 100, and in the process, engages with the working line 412 and pulls the working line 412 upward. When the working line 412 is pulled upward, the movable body 413 coupled to the end moves to the left direction by the pulling force. When the movable body 413 moves to the left direction, which is the opposite direction to the elastic supporting force of the elastic member 414, it is disengaged from the working switch 420 and the elastic pressure state of the working switch 420 is released, and the working state of the working switch 420 becomes the closed (OFF) state.

[0057] In this way, when a defect occurs in the driving rope W, the working state of the working switch 420 immediately changes from an open state to a closed state, and thus the defect state of the driving rope W can be detected in real time through such a change in the working state of the working switch 420.

[0058] The configuration of the detection unit 400 described above is exemplary, and the detection unit 400 can be changed to various ways to detect whether the hook and loop module 100 moves upwards above the reference value. For example, various sensors such as optical sensors and ultrasonic sensors that can measure the movement state of the hook and loop module 100 can be used, and various mechanical elements that are linked to the hook and loop module 100 when it moves upward can also be used.

[0059] The above description is merely an exemplary explanation of the technical idea of ​​the present invention, and a person with ordinary skills in the technical field to which the present invention belongs can implement various modifications and deformations within the scope of the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are used to illustrate the technical idea of ​​the present invention, rather than to limit the technical idea of ​​the present invention, and the scope of the technical idea of ​​the present invention is not limited by these embodiments. The protection scope of the present invention shall be interpreted by the following claims, and all technical ideas within the equivalent scope shall be interpreted as falling within the scope of the rights of the present invention.

Claims

1. A drive rope defect detection device for an elevator, which detects defects in a drive rope connected to an elevator car in a manner capable of driving and pulling the elevator car, the drive rope defect detection device for an elevator being characterized by comprising: a hook and loop module, the lower end of which is coupled to the upper end of the driving rope and is coupled to a separate fixing member so as to be elastically supported upward by an elastic spring, and elastically moves upward by the elastic force of the elastic spring when a defect occurs in the driving rope; as well as A detection unit detects whether the hook and loop module moves upwards above a reference value, The detection unit comprises: a working switch, which changes its on / off working state as the hook and loop module moves upward above a reference value; and a linkage unit, which links the hook and loop module with the working switch in such a way that the working state of the working switch changes as the hook and loop module moves upward, The linkage unit comprises: A locking body, which is combined with one side of the hook and loop module and moves integrally with the hook and loop module; a working line, which is horizontally arranged at a position spaced a predetermined distance upward from the locking body in such a manner that the working line is engaged and pulled by the locking body as the hook and loop module moves upward, and is connected to a movable body capable of linear movement at one end; and an elastic member that elastically supports the movable body in a direction to maintain the tension of the operating wire, The movable body elastically pressurizes the working switch by the elastic force of the elastic component in a manner that the working switch is in an open state in a normal state, and releases the elastically pressurized state of the working switch in a manner that the working switch is in a closed state as the working line moves in a direction away from the working switch by pulling the locking body and moving above a reference value. The fixing member comprises: a fixing plate that elastically supports the hook and loop module; and The support frame protrudes downward and is connected to both side ends of the fixing plate through the hook and loop module. One end of the working line is fixed to one of the support frames. The movable body is coupled to the other one of the support frames so as to be movable linearly in the horizontal direction, and is elastically supported by the elastic member in a direction away from one end of the working line. The movable body passes through the support frame and is arranged to protrude toward the outer side where the hook and loop module is not arranged. The working switch is coupled to a support frame coupled to the movable body, and the working switch is coupled to the support frame via a separate switch bracket in a state of being spaced apart from the support frame by a predetermined distance in the outer direction. The switch bracket comprises a bracket coupling surface tightly coupled to the outer side surface of the support frame and a switch coupling surface bent and extended outward from the end of the bracket coupling surface and coupled to the working switch.

2. The driving rope defect detection device for an elevator according to claim 1, characterized in that: A plurality of said drive ropes are connected to said elevator car, The driving rope defect detection device of the elevator comprises a plurality of the hook modules, and the plurality of the hook modules are arranged in a row in a manner of being respectively connected to the upper ends of the plurality of driving ropes. The detection unit detects whether at least one of the plurality of hook and loop modules moves upward by more than a reference value.

3. The driving rope defect detection device for an elevator according to claim 2 is characterized in that: The locking bodies are respectively combined with the plurality of hook and loop modules. The working line is configured to be able to engage and pull with the locking bodies respectively combined with the plurality of hook and loop modules.

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