Detection device for an elevator compensation rope, elevator compensation device and elevator system

Abstract

A detection device for an elevator compensation rope is provided, and it relates to the technical field of elevators. The detection device comprising: N detectors that are configured to provide at least N detection areas, wherein the N detection areas are located below a suspended rope area, a partial rope body, that is in a predetermined tension state, of each of S compensation ropes being located in the suspended rope area, wherein S and N are both integers greater than or equal to 1; wherein the N detectors are configured to send a detection signal respectively in response to detecting that the partial rope body of any one of the S compensation ropes falls into at least one detection area, the detection signal indicating that at least one of the S compensation ropes has reached a predetermined slack state. elevator compensation device and elevator system are also provide.

Description

[0001] DETECTION DEVICE FOR AN ELEVATOR COMPENSATION ROPE, ELEVATOR COMPENSATION DEVICE AND ELEVATOR SYSTEM

[0002] The present disclosure relates to the technical field of elevators, in particular to a detection device for an elevator compensation rope, a detection method for an elevator compensation rope, an elevator compensation device and an elevator system.

[0003] Elevator compensation ropes are mainly used to compensate traction ropes. During use of the compensation ropes, they will be constantly stretched due to their own characteristics. For various reasons, it may happen that one or more of the compensation ropes become slackened, as a result, the slackened ropes may cause abnormal motions such as rope swaying, squeezing and impacting. The abnormal motions may cause losses and lead to damages on other components and the ropes themselves. How to detect the slack of these compensation ropes in advance for timely adjustment to eliminate or improve the existing risks is an urgent problem to be solved.

[0004] In view of the above problems, the present disclosure provides detection device for an elevator compensation rope, detection method for an elevator compensation rope, elevator compensation device and elevator system.

[0005] According to the first aspect of the present disclosure, there is provided a detection device for an elevator compensation rope, including: N detectors that are configured to provide at least N detection areas, wherein the N detection areas are located below a suspended rope area, a partial rope body, that is in a predetermined tension state, of each of S compensation ropes being located in the suspended rope area, wherein S and N are both integers greater than or equal to 1 ; wherein the N detectors are configured to send a detection signal respectively in response to detecting that the partial rope body of any one of the S compensation ropes falls into at least one detection area, the detection signal indicating that at least one of the S compensation ropes has reached a predetermined slack state. According to an embodiment of the present disclosure, N detection areas being located below a suspended rope area including: upper boundaries of the N detection areas are gradually far away from the suspended rope area in a gravity direction. According to an embodiment of the present disclosure, any two adjacent detection areas of the N detection areas do not overlap with each other.

[0006] According to an embodiment of the present disclosure, each of spacing distances is not equal to at least one of other spacing distances, wherein the spacing distances are distances between any two adjacent detection areas in the gravity direction; or any two ones of the spacing distances are equal to each other, wherein the spacing distances are distances between any two adjacent detection areas in the gravity direction.

[0007] According to an embodiment of the present disclosure, the detection device further includes: M movable components, M detectors of the N detectors being mounted on the M movable components respectively, wherein M is an integer greater than or equal to 1, and M is less than or equal to N; wherein the M movable components are configured to move the M detectors in the gravity direction, respectively, so as to move the detection areas of the M detectors closer to or further away from the suspended rope area, respectively. According to an embodiment of the present disclosure, the N detectors are located at a bottom of a traction device of the elevator; and / or, the N detection areas are located at the bottom of the traction device of the elevator.

[0008] According to an embodiment of the present disclosure, the traction device includes a first traction sheave and a second traction sheave; the suspended rope area is located between the first traction sheave and the second traction sheave, and the partial rope body in the suspended rope area reaches the predetermined tension state by passing through the first traction sheave and the second traction sheave.

[0009] According to an embodiment of the present disclosure, the partial rope body in the suspended rope area in the predetermined tension state is perpendicular to the gravity direction, and there is a distance between the partial rope body in the suspended rope area in the predetermined tension state and any one of the N detection areas.

[0010] According to an embodiment of the present disclosure, the N detectors include at least one photoelectric sensor.

[0011] According to an embodiment of the present disclosure, any one of the at least one photoelectric sensor includes: a transmitter configured to emit light rays; a receiver configured to receive the light rays; wherein a light ray area between the transmitter and the receiver forms a detection area.

[0012] According to another aspect of the present disclosure, there is provided an elevator compensation device, including: a compensation rope; a traction device configured to tension the compensation rope; the detection device according to any one of claims 1-10, that is configured to detect slack of the compensation rope.

[0013] According to another aspect of the present disclosure, there is provided an elevator system, including: an elevator car; a counterweight; a traction rope configured to suspend the elevator car and the counterweight; and the compensation device according to claim 11, wherein the compensation rope in the compensation device is configured to compensate weight of the traction rope.

[0014] According to another aspect of the present disclosure, there is provided a detection method for an elevator compensation rope, including: deploying N detectors; providing at least N detection areas by the N detectors, wherein the N detection areas are located below a suspended rope area, a partial rope body, that is in a predetermined tension state, of each of S compensation ropes being located in the suspended rope area, wherein S and N are both integers greater than or equal to 1 ; and in response to detecting that the partial rope body of any one of the S compensation ropes falls into at least one detection area, sending a detection signal by a corresponding detector, the detection signal indicating that at least one of the S compensation ropes has reached a predetermined slack state.

[0015] By means of the above one or more embodiments, at least N detection areas below the suspended rope area may be provided by the N detectors, and the N detectors are configured to detect whether the partial rope body of each of S compensation ropes still remain in the predetermined tension state, the running space of the compensation ropes may be monitored in time. The N detectors are configured to send a detection signal respectively, when detecting that the partial rope body of any one of the S compensation ropes located in the suspended rope area falls into at least one detection area, to achieve the effect of capturing whether each compensation rope reaches a predetermined slack state at any time. Through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, the above content and other objects, features and advantages of the present disclosure will be more clear, in the accompanying drawings:

[0016] Fig. 1 schematically shows a diagram of an elevator system according to an embodiment of the present disclosure;

[0017] Fig. 2 schematically shows an enlarged view of an area in Fig. 1 according to an embodiment of the present disclosure;

[0018] Fig. 3 schematically shows a diagram of a partial rope body of a compensation rope deviating from a predetermined tension state according to an embodiment of the present disclosure;

[0019] Fig. 4 A schematically shows a diagram of a partial rope body of a compensation rope in a predetermined tension state according to an embodiment of the present disclosure;

[0020] Fig. 4B schematically shows a diagram of a partial rope body of a compensation rope in a predetermined slack state according to an embodiment of the present disclosure;

[0021] Fig. 5A schematically shows a diagram of a partial rope body of a compensation rope in a predetermined tension state according to another embodiment of the present disclosure;

[0022] Fig. 5B schematically shows a diagram of a partial rope body of a compensation rope in a predetermined slack state according to another embodiment of the present disclosure; and

[0023] Fig. 6 schematically shows a flowchart of a detection method for an elevator compensation rope according to an embodiment of the present disclosure.

[0024] The reference signs involved in the above figures are listed below:

[0025] 100: elevator system; 10: compensation device; 20: compensation sheave box; 30: compensation rope; 31: suspended rope area; 32: a partial rope body; 40: counterweight; 50: traction rope; 60: traction sheave; 70: elevator car; 80: detector; 81: transmitter; 82: re- ceiver; 83: light ray; 90: traction device; 91: first traction sheave; 92: second traction sheave.

[0026] It should be noted that in order to clarify the present disclosure, the overall / local structures or overall / local areas in the accompanying drawings for describing the embodiments of the present disclosure may be enlarged or reduced, i.e. these accompanying drawings are not necessarily drawn to scale.

[0027] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. However, it should be understood that these descriptions are exemplary and not intended to limit the scope of the present disclosure. In the detailed description below, many specific details are provided to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is evident that one or more embodiments may be practiced without these specific details. In addition, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts of the present disclosure.

[0028] The terms used herein are merely descriptive of particular embodiments and are not intended to limit the scope of the present disclosure. The terms "comprising"^ "including" and the like indicate the presence of features, steps, operations, and / or components described, but do not preclude the presence or addition of one or more other features, steps, operations, or components.

[0029] All terms used herein (including technical and scientific terms) have the meaning commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used here should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly formal manner.

[0030] Where expressions such as “at least one of A, B, and C” are used, generally the meaning of the expressions should be interpreted as understood by those skilled in the art (e.g., a “system having at least one of A, B, and C” should include but is not limited to a system having only A, a system having only B, a system having only C, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B, and C).

[0031] Fig. 1 schematically shows a diagram of an elevator system according to an embodiment of the present disclosure. It should be noted that Fig. 1 is only an example that can apply the embodiments of the present disclosure to help those skilled in the art understand the technical contents of the present disclosure, but does not mean that the embodiments of the present disclosure can only be used in other devices, systems, environments or scenes. As shown in Fig. 1, the elevator system 100 according to this embodiment includes a compensation device 10, a compensation sheave box 20, a compensation rope 30, a counterweight 40, a traction rope 50, a traction sheave 60, an elevator car 70, a detector 80, and a traction device 90. The compensation device 10 includes the compensation sheave box 20, the compensation rope 30, the detector 80 and the traction device 90. The detector 80 is configured to detect slack of the compensation rope 30. Specifically, the traction rope 50 are respectively connected to the top of the counterweight 40 and the top of the elevator car 70, so as to drive the elevator car 70 and the counterweight 40 to move by a rotation of the traction sheaves 60. The compensation rope 30 is respectively connected to the bottom of the counterweight 40 and the bottom of the elevator car 70 so as to compensate the weight of the traction rope 50 during the movement of the elevator car 70. The compensation sheave box 20 is used to guide the compensation rope 30. The traction device 90 is used to tension the compensation rope 30, so as to reduce effectively an amplitude of sway of the compensation rope 30 caused by a movement of the elevator car 70, and to improve safety and comfort during use of the elevator.

[0032] Fig. 2 schematically shows an enlarged view of the A area in Fig. 1 according to an embodiment of the present disclosure.

[0033] In some embodiments, the present disclosure provides a detection device for an elevator compensation rope 30. The detection device includes N detectors 80 , that are configured to provide at least N detection areas respectively. The N detection areas are located below a suspended rope area 31. A partial rope body 32, that is in a predetermined tension state, of each of S compensation ropes 30 is located in the suspended rope area 31, wherein S and N are both integers greater than or equal to 1.

[0034] The N detectors 80 are configured to send a detection signal respectively in response to detecting that the partial rope body 32 of any one of the S compensation ropes falls into at least one detection area, the detection signal indicating that at least one of the S compensation ropes 30 has reached a predetermined slack state.

[0035] When the partial rope body 32 of each of S compensation ropes 30 are tensioned by the traction device 90, a suspended straight rope body may be formed. For example, by winding around two traction sheaves, a nearly horizontal rope body may be formed at the bottom of the traction sheaves, that is, the suspended rope may be formed. As shown in Fig.

[0036] 1 and Fig. 2, for example, the suspended rope area 31 is an area where each suspended rope is located, the suspended rope including the partial rope body 32 of each of S compensation ropes 30 at the bottom of the traction device 90.

[0037] In the predetermined tension state, a rope body shape, a tension, and a parallel relationship with the horizontal plane of the compensation rope 30 meet requirements for healthy operation of the elevator, for example, the suspended rope is in a horizontal straight line shape. It should be understood that the horizontal or parallel state mentioned in some embodiments of the present disclosure includes absolute horizontal, absolute parallel, nearly horizontal or nearly parallel state.

[0038] In the predetermined slack state, a rope body shape, a tension, and a parallel relationship with the horizontal plane of the compensation rope 30 may not meet the requirements for healthy operation of the elevator. In this state, a suspended amount of the rope body falling into the detection area exceeds a threshold, and deviates from the predetermined tension state, for example, the suspended rope is no longer in a horizontal straight line shape. Each detector 80 provides at least one detection area. When the partial rope body 32 of each compensation rope 30 falls into the detection area, the detector 80 providing the detection area issues a detection signal. For example, the elevator system 100 also includes a controller that may receive one or more detection signals. The controller is configured to determine which detector 80 sends out the signal and the corresponding suspended amount when receiving the detection signal, for example, different suspended amounts correspond to different predetermined slack states. In some embodiments, the controller is configured to immediately stop the movement of the elevator car 70. In other embodiments, the controller is configured to limit the movement of the elevator car 70 by reducing the speed of the elevator car 70 and parking the elevator car 70 at a nearby floor. The detector 80 includes one or more selected from a photoelectric detector 80, a touch device, an image recognition detector 80. The photoelectric detector 80 includes a laser detector 80 or an infrared detector 80. The image recognition detector 80 is a panoramic camera, a pistol camera, and / or a patrol camera.

[0039] In some embodiments, the suspended rope area 31 is photographed periodically by the camera, and the current shot is compared with the previous shot of the compensation rope

[0040] 30 in the suspended rope area 31. Alternatively, the area below the suspended rope area

[0041] 31 as shown in Fig. 1 and Fig. 2 is photographed. In the predetermined tension state, there is no compensation rope body 30 in the photographed area (i.e. the detection area). When the image recognition captures the compensation rope body 30, a detection signal is issued.

[0042] In some embodiments, the touch device is a pull switch touch device, and the pull switch touch device is a bidirectional pull switch. The pull switch touch device includes a pull switch detector 80, a pull switch bracket, an end spring and a fixing device. The pull switch bracket is connected to the pull switch detector 80 and one end of the end spring, and the other end of the end spring is connected to the fixing device. When the compensation rope 30 touches the pull rope, the pull switch detector 80 will issue an alarm detection signal, and the PLC will quickly collect and process the signal through the network and report the signal. The fixing device is a plurality of pull rope bearing retaining rings. According to the embodiments of the present disclosure, at least N detection areas below the suspended rope area are provided by the N detectors, and the N detectors are configured to detect whether the partial rope body of each of S compensation ropes still remain in the predetermined tension state, so that a running space of the compensation ropes may be monitored in time. Once any of the partial rope body in the suspended rope area falls into at least one detection area, a detection signal may be issued, to achieve the effect of capturing whether each compensation rope reaches a predetermined slack state at any time.

[0043] In some embodiments, as shown in Fig. 1 and Fig. 2, the N detectors 80 are located at a bottom of a traction device 90 of the elevator; and / or, the N detection areas are located at the bottom of the traction device 90 of the elevator. Theoretically, the partial rope bodies

[0044] 32 in the predetermined tension state are parallel, and when one or more of the partial rope bodies becomes slacken, the suspended amount thereof may be increased. When the suspended part falls into any detection area, the corresponding detector 80 may be triggered to send out a signal. By triggering this detection signal, it is possible to know in time whether there is slack so as to make timely adjustments and achieve accurate detection based on the suspended rope area 31 at the bottom.

[0045] In some embodiments, as shown in Fig. 1 and Fig. 2, the traction device 90 includes a first traction sheave 91 and a second traction sheave 92. The suspended rope area 31 is located between the first traction sheave 91 and the second traction sheave 92, and the partial rope body 32 in the suspended rope area 31 reaches the predetermined tension state by means of the first traction sheave 91 and the second traction sheave 92.

[0046] It should be understood that although only one compensation rope 30 is shown in Fig. 1 and Fig. 2, the elevator system 100 may include one or more compensation ropes 30. For example, the S compensation ropes 30 include multiple ropes or belts. Each of the S compensation ropes 30 is received in a corresponding groove in each of the first traction sheave 91 and the second traction sheave 92. The first traction sheave 91 and the second traction sheave 92 apply tension to each compensation rope 30 to bring it into the predetermined tension state. This enables accurate detection of the suspended rope area 31 in combination with the tension characteristics of the traction device 90.

[0047] In some embodiments, as shown in Fig. 1 and Fig. 2, the partial rope body 32 in the suspended rope area 31 in the predetermined tension state is perpendicular to the gravity direction, and there is a distance between the partial rope body in the suspended rope area 31 in the predetermined tension state and any one of the N detection areas. The gravity direction may be the moving direction of the elevator car 70, such as the downward direction. It should be understood that the aforementioned perpendicularity may include absolute perpendicularity of 90° and near perpendicularity close to 90°.

[0048] In some embodiments, the N detectors 80 include at least one photoelectric sensor. The N detectors 80 may include N photoelectric sensors corresponding one-to-one to the N detectors, so as to facilitate procurement and deployment. In some embodiments, a part of the N detectors 80 include photoelectric sensors, other detectors 80 may adopt touch devices or image recognition detectors 80, so as to reduce misdetection and improve detec- tion accuracy.

[0049] In some embodiments, any one of at least one photoelectric sensor includes: a transmitter 81 configured to emit light rays 83; and a receiver 82 configured to receive the light rays 83. A light ray area between the transmitter 81 and the receiver 82 forms the detection area.

[0050] The light rays 83 may be in the shape of lines or curtains. Each line area or curtain area is the light ray area. Taking the line area as an example, in the left-right direction as shown in Fig. 1, i.e. the tensioning direction, the transmitters 81 emit S light rays 83 parallel to the compensation ropes 30 below the S compensation ropes 30 one by one, and S line areas are used to detect which compensation rope 30 deviates from the predetermined tension state. In other embodiments, the transmitters 81 may emit the light rays 83 vertically to the left-right direction as shown in Fig. 1, i.e. penetrating the paper surface. The transmitters 81 may be positioned at the center or on both left and right sides of the suspended rope area 31.

[0051] Fig. 3 schematically shows a diagram of a partial rope body of a compensation rope deviating from a predetermined tension state according to an embodiment of the present disclosure. Fig. 4A schematically shows a diagram of a partial rope body 32 of a compensation rope 30 in a predetermined tension state according to an embodiment of the present disclosure. Fig. 4B schematically shows a diagram of a partial rope body 32 of a compensation rope 30 in a predetermined slack state according to an embodiment of the present disclosure.

[0052] As shown in Fig. 3, the partial rope body 32 of the compensation rope 30, in an upper part of the suspended rope area 31, is in a predetermined tension state. The partial rope body 32 of the compensation rope 30, in a lower part of the suspended rope area 31, is in a predetermined slack state. The suspended amount is represented by a reference sign D. A distance between the detection area and the suspended rope area may be set according to the suspended amount D. A boundary of the suspended rope area 31 may be determined based on limit boundaries of the partial rope body 32 of the compensation rope 30, for example, the upper boundary is determined based on the rope body located at the very top, and further, based on a sectional plane above that rope body. As shown in Fig. 4A and Fig. 4B, the transmitter 81 emits light rays 83 towards the receiver 82. When all the partial rope bodies 32 of S compensation ropes 30 are in the predetermined tension state, the receiver 82 may receive and sense the light rays 83 from the transmitter 81. When any of the partial rope bodies 32 of the compensation ropes 30 is suspended to the detection area, it may obstruct the light rays 83 so that the receiver 82 cannot completely receive and sense the light rays 83 from the transmitter 81, and a detection signal may be issued at this time.

[0053] Fig. 5A schematically shows a diagram of a partial rope body 32 of a compensation rope

[0054] 30 in a predetermined tension state according to another embodiment of the present disclosure. Fig. 5B schematically shows a diagram of a partial rope body 32 of a compensation rope 30 in a predetermined slack state according to another embodiment of the present disclosure.

[0055] In some embodiments, the N detection areas being located below a suspended rope area

[0056] 31 includes: an upper boundaries of the N detection areas being gradually far away from the suspended rope area 31 in a gravity direction. The upper boundary is the boundary close to the suspended rope area 31, and the lower boundary is the boundary away from the suspended rope area 31. The gravity direction is the G direction as shown.

[0057] As shown in Fig. 5A and Fig. 5B, the detection areas may be set at different height positions according to the suspended amount to detect different suspended amounts (corresponding to different tensions).

[0058] For example, there is at least one switch for the detectors 80, each of which corresponds to one or more detectors 80 to control the detection work of the corresponding detector(s) 80, for example, to provide the detection area(s), or to determine different predetermined slack states by flexibly adjusting the detection interval of the suspended amount.

[0059] In some embodiments, the N detectors 80 may be integrated with the controller of the elevator system 100. The triggering numbers and the triggering time of sensors in the N detectors 80 may be recorded by the controller of the elevator system 100, and to form a retrospective record so as to facilitate analysis on the slackening process of the elevator compensation rope 30.

[0060] In some embodiments, any two adjacent detection areas of the N detection areas do not overlap with each other. As shown in Fig. 5A and Fig. 5B, in this way, a resource cost of providing the detection areas is reduced, a possible interference is reduced, and a detection accuracy is improved.

[0061] In some embodiments, each of spacing distances is not equal to at least one of other spacing distances, wherein the spacing distances are distances between any two adjacent detection areas in the gravity direction; or any two ones of the spacing distances are equal to each other, wherein the spacing distances are distances between any two adjacent detection areas in the gravity direction.

[0062] When each of spacing distances is not equal to at least one of other spacing distances, a non-equidistant arrangement is provided. When any two ones of the spacing distances are equal to each other, an equidistant arrangement is provided. For example, a detector 80-1, a detector 80-2, a detector 80-3, ... and a detector 80-N may be arranged in the non- equidistant arrangement or in the equidistant arrangement. The spacing distance is a distance between the lower boundary of the upper one of two adjacent detection areas and the upper boundary of the lower one of the two adjacent detection areas in the gravity direction.

[0063] As shown in Fig. 5A and Fig. 5B, when the partial rope body 32 of the compensation rope 30 falls into different detection areas, different predetermined slack state levels may be determined correspondingly, for example, the detector 80-1, the detector 80-2, and the detector 80-3 correspond to level 1, level 2, and level 3 predetermined slack states, respectively.

[0064] In some embodiments, level 1 and level 2 indicate that a tendency of slack and deformation due to slack has occurred, the suspended amount is acceptable without affecting healthy operation of the elevator, and they indicate future needs for inspection or maintenance of the compensation components. Level 3 indicates that the suspended amount threshold is exceeded and a healthy operation of the elevator may be affected, and it indicates immediate needs for inspection or maintenance of the compensation components. The equidistant arrangement facilitates detecting the change of the suspended amount of the partial rope body 32 of the compensation rope 30, so as to provide reasonable and reliable detection results and facilitate staff to grasp the slack conditions in time. The non- equidistant arrangement takes into account different stages of slack of the compensation rope 30. For example, the slack degree or suspended amount of the compensation rope 30 does not change linearly during operation. By determining the suspended amount values at each characteristic stage based on historical data, and purposefully arranging the positions of each detection area, multi-level alarms may be provided to reduce signal frequency, data processing workload, and improve detection accuracy.

[0065] In some embodiments, the detection device further comprises M movable components, M detectors 80 of the N detectors 80 being mounted on the M movable components respectively, wherein M is an integer greater than or equal to 1, and M is less than or equal to N. The M movable components are configured to move the M detectors 80 in the gravity direction, respectively, so as to move the detection areas of the M detectors closer to or further away from the suspended rope area 31, respectively.

[0066] In some embodiments, the movable component may include a lifting structure, which will be described by means of the following examples.

[0067] For example, the lifting structure may be paired to deploy the transmitter 81 and the receiver 82, respectively. It may specifically include any of the following structures, but the present disclosure is not limited thereto :

[0068] A screw lifting structure that achieves lifting by the corresponding rotation of the screw and the nut. In the screw lifting structure, the nut can be driven by the rotation of the screw drives, or the screw drivers can be driven by the rotation of the nut. The nut can rise or fall along the screw. A plunger lifting structure that achieves lifting by extension and contraction of a pneumatic or hydraulic cylinder. The plunger lifting structure may achieve continuous or stepwise precise positioning. A chain drive lifting structure realized through the movement of the chain on the saw gear or the profile gear, and the chain may be continuously cycled to change direction to achieve linear motion. A roller-driven lifting structure uses the rollers to slide along the inclined surface or a vertical surface to achieve lifting. In the roller-driven lifting structure, different heights and loads of lifting may be achieved depending on the arrangement of pulleys and rollers. A belt drive lifting structure that uses metal or fabric belts wrapped around drive pulleys to drive lifting. A track moving component lifting structure that achieves lifting by moving components on tracks. For example, when N is equal to 1, i.e. only one detector 80 is provided. Multiple detection positions may be provided corresponding to different suspended amounts. When the partial rope body 32 of the compensation rope 30 touches the detection area in the first detection position, a detection signal is issued. If the main purpose at this time is to continue monitoring, the detector 80 moves to the second detection position. When the partial rope body 32 of the compensation rope 30 touches the detection area in the second detection position, a detection signal is issued. This continues until the compensation rope 30 is replaced or the partial rope body 32 returns to the predetermined tension state. Multiple detection areas may be provided by means of multiple movements of one detector 80, and the equidistant or non-equidistant arrangement may be realized.

[0069] For example, when N is greater than 1, i.e. two or more detectors 80 are provided, some or all of the N detectors 80 are installed on the movable components. When two or more detectors 80 are each installed on the movable components, multiple detection positions may also be provided corresponding to different suspended amounts, and the respective detectors 80 may be moved relative to each other by the movable components to achieve equidistant or non-equidistant arrangement.

[0070] According to the embodiments of the present disclosure, the movable components are provided to enable the detectors 80 to move, so as to provide dynamic detection capabilities. In this way, more detection areas with fewer detectors 80 may be provided, and spacing distances between any two ones of the detectors 80 may be changed through movement, thereby adapting for different detection environments and compensation rope objects.

[0071] Fig. 6 schematically shows a flowchart of a detection method for an elevator compensation rope according to an embodiment of the present disclosure.

[0072] In step 610, N detectors are deployed.

[0073] In step 620, at least N detection areas are provided by the N detectors, wherein the N detection areas are located below a suspended rope area, a partial rope body, that is in a predetermined tension state, of each of S compensation ropes being located in the suspended rope area, wherein S and N are both integers greater than or equal to 1. In step 630, in response to detecting that the partial rope body of any one of the S compensation ropes falls into at least one detection area, a detection signal is sent by a corresponding detector, the detection signal indicating that at least one of the S compensation ropes has reached a predetermined slack state.

[0074] In some embodiments, upper boundaries of the N detection areas are gradually far away from the suspended rope area in a gravity direction.

[0075] In some embodiments, any two adjacent detection areas of the N detection areas do not overlap with each other.

[0076] In some embodiments, each of spacing distances is not equal to at least one of other spacing distances, wherein the spacing distances are distances between any two adjacent detection areas in the gravity direction; or any two ones of the spacing distances are equal to each other, wherein the spacing distances are distances between any two adjacent detection areas in the gravity direction.

[0077] In some embodiments, M movable components are provided, M detectors of the N detectors are mounted on the M movable components respectively, wherein M is an integer greater than or equal to 1, and M is less than or equal to N. The M movable components are configured to move the M detectors in the gravity direction, respectively, so as to move the detection areas of the M detectors closer to or further away from the suspended rope area, respectively.

[0078] In some embodiments, the N detectors are located at a bottom of a traction device of the elevator; and / or, the N detection areas are located at the bottom of the traction device of the elevator.

[0079] In some embodiments, the suspended rope area is located between the first traction sheave and the second traction sheave, and the partial rope body in the suspended rope area reaches the predetermined tension state by passing through the first traction sheave and the second traction sheave.

[0080] In some embodiments, the partial rope body in the suspended rope area in the predetermined tension state is perpendicular to the gravity direction, and there is a distance be- tween the partial rope body in the suspended rope area in the predetermined tension state and any one of the N detection areas.

[0081] In some embodiments, at least one photoelectric sensor is provided as part or all of the N detectors. Any one of the at least one photoelectric sensor comprises: a transmitter configured to emit light rays; a receiver configured to receive the light rays; wherein a light ray area between the transmitter and the receiver forms a detection area.

[0082] In some embodiments, a compensation rope, a traction device and a detection device are provided, and the detection method for the elevator compensation rope is performed on the compensation rope.

[0083] Those skilled in the art may be understood that features recited in the various embodiments and / or the claims of the present disclosure may be combined and / or incorporated in a variety of ways, even if such combinations or incorporations are not clearly recited in the present disclosure. In particular, the features recited in the various embodiments and / or the claims of the present disclosure may be combined and / or incorporated without departing from the spirit and teachings of the present disclosure, and all such combinations and / or incorporations fall within the scope of the present disclosure.

[0084] Embodiments of the present disclosure have been described above. However, these embodiments are only for illustrative purposes, and are not intended to limit the scope of the present disclosure. Although the various embodiments are described above separately, it does not mean that the measures in the various embodiments may not be advantageously used in combination. The scope of the present disclosure is defined by the appended claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make various substitutions and modifications, and these substitutions and modifications shall all fall within the scope of the present disclosure.

Claims

Claims1. A detection device for an elevator compensation rope (30), comprising:N detectors (80, 80-1, 80-2, 80-3, 80-N) that are configured to provide at least N detection areas, wherein the N detection areas are located below a suspended rope area, a partial rope body (32), that is in a predetermined tension state, of each of S compensation ropes (30) being located in the suspended rope area, wherein S and N are both integers greater than or equal to 1 ; wherein the N detectors (80, 80-1, 80-2, 80-3, 80-N) are configured to send a detection signal respectively in response to detecting that the partial rope body of any one of the S compensation ropes (30) falls into at least one detection area, the detection signal indicating that at least one of the S compensation ropes (30) has reached a predetermined slack state.

2. The detection device according to claim 1, wherein N detection areas being located below a suspended rope area comprising: upper boundaries of the N detection areas are gradually far away from the suspended rope area in a gravity direction (G).

3. The detection device according to claim 2, wherein any two adjacent detection areas of the N detection areas do not overlap with each other.

4. The detection device according to any of the preceding claims, wherein, each of spacing distances is not equal to at least one of other spacing distances, wherein the spacing distances are distances between any two adjacent detection areas in the gravity direction (G); or any two ones of the spacing distances are equal to each other, wherein the spacing distances are distances between any two adjacent detection areas in the gravity direction (G).

5. The detection device according to any one of claims 1-4, wherein, the detection device further comprises:M movable components, M detectors of the N detectors (80, 80-1, 80-2, 80-3, 80-N) being mounted on the M movable components respectively, wherein M is an integer greater than or equal to 1, and M is less than or equal to N;wherein the M movable components are configured to move the M detectors in the gravity direction (G), respectively, so as to move the detection areas of the M detectors () closer to or further away from the suspended rope area (), respectively.

6. The detection device according to any of the preceding claims, wherein: the N detectors (80, 80-1, 80-2, 80-3, 80-N) are located at a bottom of a traction device (90) of the elevator (100); and / or, the N detection areas are located at the bottom of the traction device (90) of the elevator (100).

7. The detection device according to claim 6, wherein the traction device (90) comprises a first traction sheave (91) and a second traction sheave (92); the suspended rope area is located between the first traction sheave (91) and the second traction sheave (92), and the partial rope body in the suspended rope area reaches the predetermined tension state by passing through the first traction sheave (91) and the second traction sheave (92).

8. The detection device according to any one of claims 1-4 and 6-7, wherein: the partial rope body (32) in the suspended rope area in the predetermined tension state is perpendicular to the gravity direction (G), and there is a distance between the partial rope body (32) in the suspended rope area in the predetermined tension state and any one of the N detection areas.

9. The detection device according to any one of claims 1-4 and 6-7, wherein the N detectors (80, 80-1, 80-2, 80-3, 80-N) comprise at least one photoelectric sensor.

10. The detection device according to claim 9, wherein any one of the at least one photoelectric sensor comprises: a transmitter (81) configured to emit light rays; a receiver (82) configured to receive the light rays; wherein a light ray area between the transmitter and the receiver forms a detection area.

11. An elevator compensation device, comprising: a compensation rope (30);a traction device (90) configured to tension the compensation rope (30); the detection device according to any one of claims 1-10, that is configured to detect slack of the compensation rope (30).

12. An elevator system (100), comprising: an elevator car (70); a counterweight (40); a traction rope (50) configured to suspend the elevator car (70) and the counterweight (40); and the compensation device according to claim 11, wherein the compensation rope (30) in the compensation device is configured to compensate weight of the traction rope (50).

13. A detection method for an elevator compensation rope (30), comprising: deploying N detectors (80, 80-1, 80-2, 80-3, 80-N); providing at least N detection areas by the N detectors (80, 80-1, 80-2, 80-3, 80-N), wherein the N detection areas are located below a suspended rope area, a partial rope body (32), that is in a predetermined tension state, of each of S compensation ropes (30) being located in the suspended rope area, wherein S and N are both integers greater than or equal to 1 ; and in response to detecting that the partial rope body of any one of the S compensation ropes (30) falls into at least one detection area, sending a detection signal by a corresponding detector (80, 80-1, 80-2, 80-3, 80-N), the detection signal indicating that at least one of the S compensation ropes (30) has reached a predetermined slack state.

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