1. A method for detecting the condition of a surface insulation layer of an elevator traction belt, comprising the steps of:

positioning a detection member adjacent to a surface insulation layer of an elevator traction belt;

moving the elevator traction belt relative to the detection component such that the detection component scans the surface insulation layer of the elevator traction belt;

applying static electricity to the detection member by a static electricity generation member;

detecting a reaction of the elevator traction belt to static electricity; and is

Identifying a state of the surface insulation layer of the elevator belt based on the detected reaction of the elevator belt to static electricity.

2. The condition detecting method according to claim 1, wherein detecting the reaction of the elevator traction belt to static electricity includes detecting a current fluctuation between the detecting member and the surface insulating layer of the elevator traction belt, an acoustic signal of an electric spark, or an optical signal of an electric spark.

3. The condition detecting method according to claim 2, wherein the static electricity generating part is configured to be grounded.

4. The condition detecting method according to claim 2, characterized in that it is judged that the surface insulating layer has a defect when it is detected that a current fluctuation between the detecting member and the surface insulating layer of the elevator traction belt exceeds a predetermined value, and/or when an acoustic signal of an electric spark is detected, and/or when an optical signal of an electric spark is detected.

5. The status detection method according to claim 4, wherein when it is judged that the surface insulating layer has a defect, one or more of the following operations are taken: sounding an alarm, sounding a visual alarm, stopping the elevator to the nearest floor.

6. The status detecting method according to any one of claims 1 to 5, wherein the size of the detecting member is set to be larger than or equal to the width size of the elevator traction belt.

7. The status detection method according to any one of claims 1 to 5, wherein the detection member includes a plurality of wires or filaments formed of a conductive material.

8. The condition detecting method according to any one of claims 1 to 5, wherein the static electricity generating part is configured to generate static electricity having a voltage of 2-10 kv and a pulse frequency of 10-100 Hz.

9. A state detecting device of a surface insulating layer for an elevator traction belt, comprising:

a detection component positioned adjacent to a surface insulation layer of an elevator traction belt;

a static electricity generating part electrically connected with the detecting part, an

A controller configured to: causing the static electricity generating means to apply static electricity to the detecting means, detecting a reaction of the elevator traction belt to the static electricity, and recognizing a state of the surface insulating layer of the elevator traction belt according to the detected reaction of the elevator traction belt to the static electricity.

10. The condition detecting device according to claim 9, further comprising a sensing member configured to sense a current fluctuation between the detecting member and the surface insulating layer of the elevator traction belt, an acoustic signal of an electric spark, or an optical signal of an electric spark.

11. The status detection device according to claim 9, wherein the static electricity generation part is configured to be grounded.

12. The status detection device of claim 10, wherein the controller is configured to: judging that the surface insulating layer has a defect when detecting that the current fluctuation between the detecting member and the surface insulating layer of the elevator traction belt exceeds a predetermined value, and/or when detecting an acoustic signal of an electric spark, and/or when detecting an optical signal of an electric spark.

13. The status detection device of claim 12, wherein the controller is further configured to: when the surface insulating layer is judged to have defects, one or more of the following operations are taken: sounding an alarm, sounding a visual alarm, stopping the elevator to the nearest floor.

14. The status detecting device according to any one of claims 9 to 13, wherein the size of the detecting member is set to be larger than or equal to the width size of the elevator traction belt.

15. The status detection apparatus according to any one of claims 9 to 13, wherein the detection member includes a plurality of wires or filaments formed of a conductive material.

16. The status detection apparatus according to any one of claims 9 to 13, wherein the static electricity generation means is configured to generate static electricity having a voltage of 2 to 10 kv and a pulse frequency of 10 to 100 Hz.

Background

The normal operation of an elevator is of vital importance to the life and property safety of elevator users. Due to the presence of many moving parts in an elevator, the cooperation between the various parts is complex, and damage to the structural integrity of any part can potentially threaten elevator safety. For example, the traction belt or traction steel belt of an elevator is directly connected to the elevator car and the counterweight and is therefore of vital importance for the safety of the passengers in the elevator car. It is therefore desirable that the hoisting steel belts of the elevator do not present any health problems affecting safe operation.

The component status of the hoisting steel belt of an elevator needs to be continuously and effectively monitored. However, existing state detection means rely primarily on visual inspection by maintenance personnel and are therefore time consuming and lack accuracy.

Therefore, there is a continuing need for new condition detection methods and apparatus solutions for surface insulation layers of elevator traction belts. It is desirable that new solutions alleviate the above problems at least to some extent.

Disclosure of Invention

An object of an aspect of the present application is to provide a state detection method for a surface insulation layer of an elevator traction belt, which aims to provide stable and automated elevator traction belt structure integrity detection. Another object of the present application is to provide a state detecting device for a surface insulation layer of an elevator traction belt.

The purpose of the application is realized by the following technical scheme:

a state detecting method for a surface insulation layer of an elevator traction belt, comprising the steps of:

positioning a detection member adjacent to a surface insulation layer of an elevator traction belt;

moving the elevator traction belt relative to the detection component so that the detection component scans the surface insulation layer of the elevator traction belt;

applying static electricity to the detection member by the static electricity generation member;

detecting the reaction of the elevator traction belt to static electricity; and is

The state of the surface insulation layer of the elevator traction belt is recognized according to the detected reaction of the elevator traction belt to static electricity.

In the above-described state detection method, optionally, the detecting of the reaction of the elevator traction belt to static electricity includes detecting a current fluctuation between the detection member and a surface insulating layer of the elevator traction belt, an acoustic signal of an electric spark, or an optical signal of an electric spark.

In the above state detection method, optionally, the static electricity generation part is configured to be grounded.

In the above-described state detection method, optionally, the surface insulating layer is judged to be defective when it is detected that a current fluctuation between the detection member and the surface insulating layer of the elevator traction belt exceeds a predetermined value, and/or when an acoustic signal of an electric spark is detected, and/or when an optical signal of an electric spark is detected.

In the above state detection method, optionally, when it is judged that the surface insulating layer has a defect, one or more of the following operations are taken: sounding an alarm, sounding a visual alarm, stopping the elevator to the nearest floor.

In the above-described state detection method, optionally, the size of the detection member is set to be greater than or equal to the width size of the elevator traction belt.

In the above state detection method, optionally, the detection member includes a plurality of wires or filaments formed of a conductive material.

In the above-described state detection method, optionally, the static electricity generation section is configured to generate static electricity having a voltage of 2 to 10 kv and a pulse frequency of 10 to 100 Hz.

A state detecting device for a surface insulating layer of an elevator traction belt, comprising:

a detection component positioned adjacent to a surface insulation layer of an elevator traction belt;

a static electricity generating part electrically connected with the detecting part, an

A controller configured to: the static electricity generating means applies static electricity to the detecting means, detects a reaction of the elevator traction belt to the static electricity, and recognizes a state of the surface insulating layer of the elevator traction belt based on the detected reaction of the elevator traction belt to the static electricity.

In the above state detection device, optionally, a sensing part configured to sense a current fluctuation between the detection part and a surface insulation layer of the elevator traction belt, an acoustic signal of the electric spark, or an optical signal of the electric spark is further included.

In the above-described state detection device, optionally, the static electricity generation part is configured to be grounded.

In the above state detection device, optionally, the controller is configured to: when it is detected that the current fluctuation between the detecting member and the surface insulating layer of the elevator traction belt exceeds a predetermined value, and/or when an acoustic signal of an electric spark is detected, and/or when an optical signal of the electric spark is detected, it is judged that the surface insulating layer has a defect.

In the above state detection apparatus, optionally, the controller is further configured to: when the surface insulating layer is judged to have defects, one or more of the following operations are taken: sounding an alarm, sounding a visual alarm, stopping the elevator to the nearest floor.

In the above-described state detecting device, optionally, the size of the detecting member is set to be larger than or equal to the width size of the elevator traction belt.

In the above-described state detection device, optionally, the detection member includes a plurality of wires or filaments formed of a conductive material.

In the above-described state detection device, optionally, the static electricity generating section is configured to generate static electricity having a voltage of 2 to 10 kv and a pulse frequency of 10 to 100 Hz.

The method and the device for detecting the state of the surface insulating layer of the elevator traction belt have the advantages of simplicity, reliability, easiness in implementation, convenience in use and the like, and can improve the efficiency of elevator component detection and improve the safety.

Drawings

The present application will now be described in further detail with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will appreciate that the drawings are designed solely for the purposes of illustrating preferred embodiments and that, accordingly, should not be taken as limiting the scope of the present application. Furthermore, unless specifically stated otherwise, the drawings are intended to be conceptual in nature or configuration of the depicted objects and may contain exaggerated displays. The figures are also not necessarily drawn to scale.

Fig. 1 is a diagrammatic illustration of the structure of an elevator.

Fig. 2 is a diagrammatic view of the elevator structure of the present application.

FIG. 3 is a schematic diagram of an embodiment of the condition sensing device of the present application in operation.

Fig. 4 is a schematic diagram of another state of the embodiment of fig. 3 in operation.

Detailed Description

Hereinafter, preferred embodiments of the present application will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the descriptions are illustrative only, exemplary, and should not be construed as limiting the scope of the application.

First, it should be noted that the terms top, bottom, upward, downward, and the like as used herein are defined with respect to the orientation in the drawings. These orientations are relative concepts and will therefore vary depending on the position and state in which they are located. These and other directional terms are not to be construed in a limiting sense.

Furthermore, it should also be noted that for any single technical feature described or implicit in the embodiments herein or shown or implicit in the drawings, these technical features (or their equivalents) can be continuously combined to obtain other embodiments not directly mentioned herein.

It should be noted that in different drawings, the same reference numerals indicate the same or substantially the same components.

Fig. 1 is a diagrammatic illustration of the structure of an elevator. The elevator system 101 includes a series of sections installed in a hoistway 117, the hoistway 117 may be disposed across multiple floors 125, and elevator doors are provided at each floor 125, respectively. The elevator system 101 includes: the car 103, the counterweight 105, the traction belt 107, the guide rail 109, the drive 111, the position detection system 113, the controller 115, and the like. One end of the traction belt 107 is attached to the car 103, and the other end of the traction belt 107 is attached to the counterweight 105. The counterweight 105 is used to balance the weight of the car 103. The traction belt 107 is moved by the drive 111 to selectively change the position of the car 103 and stop the car 103 at a desired floor. The traction belt 107 may be, for example, a rope, a steel cable, or a coated steel belt, among others. The traction belt 107 may also be associated to a pulley mechanism or set of pulleys, not shown, to achieve the desired lifting and lowering operations. It is easily understood that the car 103 is also provided with a door for a person to get in and out of the car 103.

A drive 111 is disposed at the top of the hoistway and is configured to adjust the position of the car 103 and counterweight 105. The drive 111 may be any suitable power supply device including, but not limited to, an electric motor or the like. The drive 111 may be powered by a power line or grid, not shown.

The position detection system 113 may be mounted stationary relative to the hoistway 117 and is preferably disposed at the top of the hoistway 117, such as on a bracket or rail. The position detection system 113 is also configured to sense the position of the elevator car 103 within the hoistway 117 to provide a position signal related to the position of the car 103. In another embodiment, the position detection system 113 may also be arranged on other parts, for example mounted on the moving part. The position detection system 113 may include encoders, sensors, or other suitable sensing systems, and the manner of sensing includes, but is not limited to, speed sensing, relative position sensing, absolute position sensing, and digitally encoded sensing, among others.

The controller 115 may be disposed in a separate control room 121, or may be disposed at another suitable location. In one embodiment, the controller 115 may also be located in a remote location or in the cloud. The controller 115 is configured to control the operation of the entire elevator system 101. For example, the controller 115 may adjust operation of the drive 111 to cause the car 103 and counterweight 105 to move in a starting, accelerating, decelerating, stopping, etc. motion. The controller 115 may perform a control operation according to a signal from the position detection system 113. In one embodiment, the controller 115 is configured to stop the car 103 at one of the floors 125 and to move between the floors 125 in an accelerating or decelerating motion.

The embodiment shown in fig. 1 is provided only for the purpose of facilitating understanding. It will be readily appreciated that the condition detection method and apparatus for the surface insulation of an elevator traction belt according to the present application can be used in any suitable elevator system, such as a ropeless elevator system including a linear motor.

Fig. 2 is a diagrammatic view of the elevator structure of the present application. Fig. 2 shows part of the components of the elevator. The car 103 is suspended by a traction belt 107 through a plurality of sheaves 102 located at the top of the car 103. The other end of the traction belt 107 is attached to the counterweight 105 through the pulley 102. During operation, the counterweight 105 and car 103 will move in a vertical direction under the traction of the traction belt 107. The present application also provides a platform 108, the platform 108 being arranged such that the trailing tape 107 is movable relative to the platform 108. At least some of the components of the condition detecting device 200 for the surface insulation layer of the elevator traction belt according to the present application are disposed on the platform 108.

In one embodiment of the application, the platform 108 may be a foundation for placement of the machine, but may also be any other suitable elevator component or additional installed component. In this case, the movement of the traction tape 107 relative to the platform 108 may cause the traction tape 107 to move relative to the condition detecting device 200.

In another embodiment, the status detection device 200 may be configured to be mobile. For example, the state detection device 200 may be configured to be held and moved by a user. In this case, the movement of the traction tape 107 with respect to the user may cause the traction tape 107 to move with respect to the state detecting device 200. For example, the traction belt 107 moves relative to the ground in operation, and the user and status detection device 200 are stationary relative to the ground; or the traction belt 107 is stationary relative to the ground and the user and the condition detecting means are moving relative to the ground.

Fig. 3 is a schematic diagram of a state of an embodiment of the state detection apparatus of the present application in operation, and fig. 4 is a schematic diagram of another state of the embodiment shown in fig. 3 in operation. One embodiment of a status detection apparatus 200 according to the present application includes: a detecting member 210 which is positioned adjacent to a surface insulation layer of the traction belt 107 of the elevator, and the traction belt 107 is movable with respect to the detecting member 210; a static electricity generating part 220 electrically connected to the detecting part 210; and a controller 230 configured to: the static electricity generating part 220 is caused to apply static electricity to the detecting part 210, detect the reaction of the capstan tape 107 to the static electricity, and recognize the state of the surface insulating layer of the capstan tape 107 from the detected reaction of the capstan tape 107 to the static electricity.

In the illustrated embodiment, the condition detecting device 200 further includes a current sensor 240 electrically associated with the detecting member 210 and configured to sense current fluctuations generated between the detecting member 210 and the surface insulating layer of the traction tape 107. For example, the current sensor 240 may be connected in series with the detection part 210 and the static electricity generation part 220.

The traction belt 107 can be any known type of elevator traction device including, but not limited to, a traction steel belt as known to those skilled in the art. The traction tape 107 includes a core 107a formed of a conductive material and a surface insulating layer 107b covering the core 107 a. A cross section of the traction tape 107 is shown in fig. 3 and 4, in which the dimension of the traction tape 107 in the horizontal direction in the drawing is hereinafter referred to as a width dimension, and the dimension in the vertical direction in the drawing is also referred to as a thickness dimension. It will be readily appreciated that the traction tape also extends in a direction perpendicular to the page and has a length dimension. The core 107a and the surface insulating layer 107b extend along the entire length dimension. As shown in the cross-sectional views of fig. 3 and 4, a plurality of cores 107a may be distributed along the width dimension of the traction tape 107. The individual cores 107a may be separate from each other or there may be electrical contact between adjacent cores 107 a. In the illustrated embodiment, the surface insulating layer 107b is distributed around each of the cores 107a, and thus isolates each of the cores 107a from each other, as well as isolates each of the cores 107a from the outside. The surface insulating layer 107b generally has a sufficient thickness and is formed of an electrically insulating material.

Although not shown, it is readily understood that the length dimension of the tow belt 107 is generally much greater than its width dimension, and the width dimension is generally much greater than its thickness dimension. A sufficiently long traction tape 107 has electrical characteristics similar to direct grounding. In other words, the core 107a of the traction tape 107 can be considered to have zero potential or equivalently be grounded. In another embodiment, the traction belt 701 may also be physically grounded.

Furthermore, it is readily understood that the condition detecting device 200 according to the present application may also be used to detect any cable having a core of conductive material and a coated insulation layer, including but not limited to a traction belt, a compensating rope, a cable, etc. of an elevator.

The detection member 210 may be a conductive brush, such as a brush comprised of a series or plurality of filaments or wires 211. The wire 211 may be made of any suitable electrically conductive material, including but not limited to various electrically conductive metallic and non-metallic materials, such as copper, iron, carbon fiber, and the like. As shown, the size of the sensing member 210 may be set to be approximately equal to the width dimension of the trailing tape 107. However, the size of the detection part 210 may be set larger than the width size of the hoist belt 107 or may be smaller than the width size of the hoist belt 107. The detecting unit 210 is electrically connected to the electrostatic generating unit 220 and the like through a wire.

The static electricity generating component 220 may be any suitable static electricity generating device. In one embodiment, the static electricity generating part 220 is configured to generate static electricity having a voltage of 2-10 kilovolts and a pulse frequency of 10-100 Hz. For example, the generated static electricity may have a voltage of 2 kv, 4 kv, 5 kv, 6 kv, 7 kv, or 10 kv, and may have a pulse frequency of 40Hz, 50Hz, or 60 Hz. As shown, the static electricity generating component 220 may also be configured to be grounded.

The static electricity generating part 220 and the current sensor 240 are electrically connected to the controller 230. The controller 230 is configured to: the static electricity generating means 220 applies static electricity to the detecting means 210, detects a reaction of the trailing tape 107 to the static electricity, and recognizes the state of the trailing tape 107 based on the detected reaction of the trailing tape 107 to the static electricity.

Specifically, as shown in fig. 3, when the surface insulating layer 107b of the capstan tape 107 is intact, the surface insulating layer 107b may isolate the core 107a from the wire 211 of the detection part 210. Therefore, there is no electrical path between the core 107a and the line 211, and the static electricity generated by the static electricity generating part 220 does not reach the core 107 a.

However, during operation of the elevator, a seam 107c may be generated in the surface insulation layer 107b of the traction belt 107 due to wear, aging, or human damage. Due to the nature of the insulation material, the slot 107c will typically extend from the surface of the trailing tape 107 all the way to the core 107a (as schematically illustrated in figure 4), and may even extend over the entire cross-section. In addition, a hole extending from the surface to the core 107a may be formed on the surface of the traction tape 107. These seams or holes are generally undesirable because they can quickly enlarge, leading to cracking or failure of the surface insulation layer 107b and presenting a risk in terms of elevator safety.

When the capstan tape 107 moves relative to the detection member 210, the hole or slit on the surface of the capstan tape 107 also moves relative to the detection member 210, and when the wire 211 of the detection member 210 moves to be adjacent to the hole or slit, an electrical path is formed between the wire 211 and the core 107a by air. As long as the static electricity generated by the static electricity generating part 220 has a sufficiently high voltage, it is possible to strike or ionize the air between the wire 211 and the core 107a, thereby forming an electrical path, generating an electric spark and an electric current between the detecting part 210 and the core 107 a. The magnitude of this current depends on the particular situation, and the current sensor 240 is configured to sense current fluctuations caused by the current.

In one embodiment, the controller 230 is configured to: when it is detected that the current fluctuation between the capstan tape 107 and the surface insulating layer 107b of the detection part 210 exceeds a predetermined value, it is judged that the surface insulating layer 107b has a defect (e.g., a slit or a hole). That is, in the case where the current fluctuation exceeding the predetermined value is not sensed, the state of the traction belt 107 is set to normal. In the case where a current fluctuation exceeding a predetermined value is sensed, the state of the traction belt 107 is identified as abnormal. The predetermined value can be set according to actual needs and sensitivity to defects, and can be, for example, greater than 0.1mA, greater than 0.05mA, greater than 0.1A, and the like. The direction of the current flow may be, for example, the direction indicated by arrow a in fig. 4.

In another embodiment, the state detection device 200 may include an acoustic sensing device, such as a microphone or the like. The acoustic sensing device is used for sensing acoustic signals which are propagated in the air when the electric spark is generated. Similarly, the controller 230 is configured to: when the acoustic signal of the electric spark is detected, it is judged that the surface insulating layer 107b has a defect (e.g., a slit or a hole).

In yet another embodiment, the state detection device 200 may comprise an optical sensing device, such as a camera or the like. The acoustic sensing device is used for sensing an optical signal emitted when the electric spark is generated. Similarly, the controller 230 is configured to: when the optical signal of the electric spark is detected, it is judged that the surface insulating layer 107b has a defect (e.g., a slit or a hole).

In the case where the static electricity is a pulse having a certain frequency, the above-described spark and current fluctuation may continuously occur, thereby facilitating detection and judgment.

The controller 230 may also be configured to: when it is judged that the surface insulating layer 107b has a defect, one or more of the following operations are taken: sounding an alarm, sounding a visual alarm, stopping the elevator to the nearest floor. The controller 230 can be a separate control unit or the functions of the controller 230 can be implemented using a control unit already present in the elevator.

Referring again to FIG. 2, in one embodiment of the condition sensing device 200 of the present application, at least the sensing member 210 is mounted in fixed relation to the platform 108 such that the trailing ribbon 107 is movable relative to the sensing member 210. Other components of condition detection device 200 may be disposed on platform 108, or in other suitable locations. Furthermore, by mounting the detection member 210 on the platform 108, it is possible to detect the entire traction belt 107 of the elevator in the length direction, thereby avoiding the potential risk of incomplete manual detection.

The application also relates to a state detection method. One embodiment of a state detection method according to the present application includes the steps of:

disposing a sensing member adjacent to a surface insulation layer of an elevator traction belt;

moving the elevator traction belt relative to the detection component so that the detection component scans the surface insulation layer of the elevator traction belt;

applying static electricity to the detection member by the static electricity generation member;

detecting the reaction of the elevator traction belt to static electricity; and is

The state of the surface insulation layer of the elevator traction belt is recognized according to the detected reaction of the elevator traction belt to static electricity.

According to the detailed description disclosed above in connection with the drawings, detecting the reaction of the elevator traction belt to static electricity may comprise detecting current fluctuations between the detection member and the surface insulation of the elevator traction belt, acoustic signals of electric sparks or optical signals of electric sparks, etc. In case the current fluctuation exceeds a predetermined value, an acoustic or optical signal of an electric spark is detected, the controller will identify the state of the elevator traction belt as abnormal and take one or more of the above-mentioned countermeasures.

The state detection method and the state detection device have good sensitivity, and can effectively detect defects in the surface insulating layer of the elevator traction belt. The condition detection method and apparatus of the present application provide significant improvements in reliability, operational efficiency, and degree of automation as compared to manual visual detection.

This written description discloses the application with reference to the drawings, and also enables one skilled in the art to practice the application, including making and using any devices or systems, selecting appropriate materials, and using any incorporated methods. The scope of the present application is defined by the claims and encompasses other examples that occur to those skilled in the art. Such other examples are to be considered within the scope of protection defined by the claims of this application, provided that they include structural elements that do not differ from the literal language of the claims, or that they include equivalent structural elements with insubstantial differences from the literal language of the claims.