Steel belt slack monitoring device suitable for steel belt elevator and steel belt elevator

Abstract

The present disclosure discloses a steel band slack monitoring device and a steel band elevator, the steel band slack monitoring device comprises: a triggering assembly adapted to be clamped on the steel band; an action assembly comprising: a fixed support configured to be connected with a fixed structure of the elevator; a triggering plate pivotally mounted on the fixed support, the triggering plate is configured to be arranged above the triggering assembly; and a triggering switch, the triggering plate rotates in response to the upward movement of the triggering assembly caused by the steel band slack, so that the triggering switch is activated. The steel band slack monitoring device has low requirements for installation position and installation space, can effectively avoid other adjacent functional components in the shaft space, is convenient to install and maintain, is not easily affected by other functional components, reduces the probability of false action, and can reduce the probability of being damaged and deformed by other adjacent functional components.

Description

Technical Field

[0001] At least one embodiment of this disclosure relates to a steel belt slack monitoring device, and more particularly to a monitoring device suitable for monitoring steel belt slack in a steel belt elevator, and a steel belt elevator. Background Technology

[0002] Compared to traditional wire rope elevators, steel belt platform elevators have smaller traction machines and require less machine room space.

[0003] According to standards, steel belt platform elevators must be equipped with a monitoring device to detect abnormal slack in the steel belt. To improve space utilization, the installation space for various components within the shaft is limited. Traditional steel belt slack monitoring devices are greatly affected by installation location and space constraints, and their complex structure makes them prone to malfunctions, affecting normal elevator operation. Furthermore, under extreme conditions, the steel belt slack monitoring device can be damaged or deformed, affecting its normal use. Summary of the Invention

[0004] To address the aforementioned technical problems, one embodiment of this disclosure provides a steel belt slack monitoring device suitable for steel belt elevators, comprising:

[0005] Triggering components suitable for clamping onto steel strips;

[0006] Action components, including:

[0007] The fixed bracket is configured to connect to the elevator's fixed structure.

[0008] A trigger plate, pivotally mounted on the fixed bracket, is configured to be positioned above the trigger assembly; and

[0009] A trigger switch is activated by rotating the trigger plate in response to the upward movement of the trigger assembly caused by the slack in the steel strip.

[0010] According to some embodiments of this disclosure, the trigger switch includes a proximity switch, the proximity switch comprising:

[0011] The proximity switch body is mounted on the fixed bracket; and

[0012] A sensor is disposed on a first end of the trigger plate, and a second end of the trigger plate opposite to the first end is disposed above the trigger assembly. In response to the sensor approaching the proximity switch body, the proximity switch body is activated.

[0013] According to some embodiments of this disclosure, the proximity switch includes an inductive proximity switch.

[0014] According to some embodiments of this disclosure, the trigger switch includes a contact switch, the contact switch comprising:

[0015] A contact switch body is mounted on the fixed bracket, and a button is provided on the contact switch body;

[0016] The trigger plate presses the button in response to approaching the contact switch body, thereby activating the contact switch body.

[0017] According to some embodiments of this disclosure, the triggering component includes:

[0018] Two clamping plates are arranged opposite each other, and grooves adapted to the steel strip to be clamped are provided on the opposite sides of the two clamping plates.

[0019] Fasteners, provided on the clamping plates, are adapted to adjust the distance between the two clamping plates so that the two clamping plates clamp or disengage from the steel strip;

[0020] A trigger portion extends from one end of the clamping plate in a direction perpendicular to the side of the clamping plate, and the trigger portion is configured to push the trigger plate to rotate in response to the upward movement of the trigger assembly caused by the slack of the steel strip.

[0021] According to some embodiments of this disclosure, the fixing bracket includes:

[0022] Mounting plate, which is suitable for connection with the fixed structure of the elevator;

[0023] An extension extends from the side of the mounting plate in a direction perpendicular to the mounting plate; and

[0024] Two opposing first wing plates extend from the side of the extension in a direction perpendicular to the extension. Each of the two first wing plates is provided with a first pivot hole, which is adapted to pivotally connect with the trigger plate.

[0025] According to some embodiments of this disclosure, the trigger plate includes:

[0026] The main body is provided with a second pivot hole that is adapted to the first pivot hole;

[0027] The rotating rod is pivotally connected to the first pivot hole and the second pivot hole;

[0028] An actuating part extends from one end of the main body and is configured to drive the main body to rotate around the rotating rod in response to the push of the triggering component.

[0029] A pressure plate extends in an arc from the other end of the body portion, and the pressure plate is configured to press the button in response to rotation of the body portion.

[0030] According to some embodiments of this disclosure, the number of triggering components is multiple sets, and the multiple sets of triggering components are sequentially clamped on multiple steel strips arranged side by side;

[0031] The trigger plate also includes:

[0032] An actuating lever is disposed on the actuating part, and the actuating lever is configured to be disposed above the plurality of triggering components.

[0033] According to some embodiments of this disclosure, the trigger plate further includes:

[0034] Two opposing second wing plates extend from the side of the actuating part in a direction perpendicular to the actuating part, and the actuating rod passes through the two second wing plates.

[0035] According to some embodiments of this disclosure, the trigger plate further includes:

[0036] A stop block is provided on one or both sides of the main body.

[0037] The fixed bracket is provided with a positioning component that is adapted to the stop block;

[0038] The center of gravity of the trigger plate is located between the rotating rod and the actuating part. The trigger plate is configured such that the stop block rests on the positioning member based on its own weight, so that the actuating part remains horizontal.

[0039] According to some embodiments of this disclosure, the trigger plate further includes:

[0040] Two opposing third wing plates extend from the side of the main body in a direction perpendicular to the main body, and the third wing plates are provided with the second pivot hole.

[0041] Another embodiment of this disclosure provides a steel belt elevator, comprising:

[0042] Rope end assembly;

[0043] A steel strip, one end of which is connected to the lower end of the rope head assembly;

[0044] As mentioned above, the steel strip slack monitoring device;

[0045] The triggering component of the steel strip slack monitoring device is installed on one end of the steel strip near the rope head assembly.

[0046] According to the above embodiment of the steel belt slack monitoring device for steel belt elevators, the trigger component is clamped onto the steel belt to be monitored, and the actuating component is installed on a fixed structure above the trigger component. The action of the spring in the rope end assembly pulling the steel belt upwards after slack occurs causes the trigger component to push the trigger plate to rotate, thereby activating the trigger switch. The steel belt slack monitoring device provided in this disclosure has low requirements for installation location and space, can effectively avoid other adjacent functional components in the shaft space, is easy to install and maintain, and is not easily affected by other functional components, reducing the probability of malfunction and the probability of damage or deformation from other adjacent functional components. Attached Figure Description

[0047] Figure 1 A side view of a steel belt slack monitoring device for a steel belt elevator, according to an embodiment of the present disclosure, is shown schematically.

[0048] Figure 2 yes Figure 1 The image shows a front view of the steel strip relaxation monitoring device.

[0049] Figure 3 This schematic diagram illustrates the installation position of the trigger component of a steel belt slack monitoring device for steel belt elevators according to an embodiment of the present disclosure;

[0050] Figure 4 yes Figure 3 A 3D view of the triggering component shown;

[0051] Figure 5 A perspective view schematically illustrating the actuating components and trigger switch of a steel belt slack monitoring device for a steel belt elevator according to an embodiment of the present disclosure;

[0052] Figure 6 yes Figure 5 Side view of the actuator and trigger switch shown;

[0053] Figure 7 yes Figure 5 A perspective view of the fixing bracket of the motion component shown; and

[0054] Figure 8 yes Figure 5 A 3D view of the trigger plate of the motion component shown.

[0055] The meanings of the reference numerals in the above figures are as follows:

[0056] 1-Triggering component;

[0057] 11-Clamping plate;

[0058] 12-Trigger section;

[0059] 13-Groove;

[0060] 2-Action components;

[0061] 21-Fixed bracket;

[0062] 211-Mounting plate;

[0063] 212 - Extension;

[0064] 213 - First wing plate;

[0065] 22-Trigger plate;

[0066] 221-Ontology part;

[0067] 222 - Action Department;

[0068] 223 - Pressure plate;

[0069] 224 - Rotating rod;

[0070] 225-Action lever;

[0071] 226-Stop block;

[0072] 227 - Second wing plate;

[0073] 228 - Third Wing;

[0074] 3-Trigger switch;

[0075] 4-Steel strip;

[0076] 5-Guide rails; and

[0077] 6- Rope end assembly. Detailed Implementation

[0078] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0079] However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of this disclosure. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of embodiments of this disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of this disclosure.

[0080] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The term "comprising" as used herein indicates the presence of features, steps, or operations, but does not exclude the presence or addition of one or more other features.

[0081] When using expressions such as "at least one of A, B, and C," the expression should generally be interpreted in accordance with the meaning commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.). Similarly, when using expressions such as "at least one of A, B, or C," the expression should generally be interpreted in accordance with the meaning commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.).

[0082] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0083] Figure 1 A schematic side view of a steel belt slack monitoring device for a steel belt elevator according to an embodiment of the present disclosure is shown. Figure 2 yes Figure 1 The image shows a front view of the steel strip relaxation monitoring device.

[0084] According to one aspect of the inventive concept of this disclosure, a steel belt slack monitoring device suitable for steel belt elevators is provided, such as... Figure 1 and Figure 2 As shown, the steel belt slack monitoring device includes: a trigger assembly 1, an actuation assembly 2, and a trigger switch 3. The trigger assembly 1 is adapted to be clamped onto the steel belt 4 to be monitored. The actuation assembly 2 includes a fixed bracket 21 and a trigger plate 22. The fixed bracket 21 is configured to connect to the fixed structure of the elevator. The trigger plate 22 is pivotally mounted on the fixed bracket 21 and is configured to be positioned above the trigger assembly 1. The trigger switch 3 rotates in response to the upward movement of the trigger assembly 1 caused by the slack in the steel belt 4, thereby activating the trigger switch 3.

[0085] In this embodiment, by clamping the trigger component 1 onto the steel strip 4 to be monitored, and installing the actuation component 2 on a fixed structure (e.g., guide rail 5) above the trigger component 1, the spring of the rope end assembly 6 pulls the steel strip 4 upward after it becomes slack, causing the trigger component 1 to push the trigger plate 22 to rotate, thereby activating the trigger switch 3. The steel strip slack monitoring device provided in this embodiment has low requirements for installation location and space, can effectively avoid other adjacent functional components in the shaft space, is easy to install and maintain, and is not easily affected by other functional components, reducing the probability of malfunction and the probability of being damaged or deformed by other adjacent functional components.

[0086] Figure 3 The schematic diagram illustrates the installation position of the trigger component of a steel belt slack monitoring device for steel belt elevators according to an embodiment of the present disclosure.

[0087] In this embodiment, as Figure 3 As shown, the elevator includes a rope end assembly 6, which, from bottom to top, includes: a rope end sleeve, a pull rod, a fixing plate, a spring, and an adjusting nut. The rope end sleeve is suitable for connecting to one end of the steel belt 4 to be monitored. The fixing plate is mounted on the mounting beam in the machine room. The preload of the spring is adjusted by the adjusting nut to keep the steel belt 4 taut. When the steel belt 4 accidentally slackens, the rope end sleeve, along with one end of the steel belt 4, moves upward under the action of the spring. The trigger component 1, mounted on the steel belt 4 near the rope end, moves upward with the steel belt 4, thereby touching and pushing the trigger plate 22 to rotate, thus activating the trigger switch 3.

[0088] Figure 4 yes Figure 3 The diagram shows a 3D view of the triggering component.

[0089] According to some embodiments of this disclosure, such as Figure 3 , Figure 4 As shown, the trigger assembly 1 includes a clamping plate 11, a trigger part 12, and fasteners. There are two clamping plates 11, arranged opposite each other, with grooves 13 on their opposite sides that are adapted to the steel strip 4 to be clamped. Fasteners are provided on the clamping plates 11 and are used to adjust the distance between the two clamping plates 11 so that they clamp or disengage the steel strip. Optionally, the fasteners include bolts. The trigger part 12 extends from one end of the clamping plate 11 in a direction perpendicular to the side of the clamping plate 11. The trigger part 12 is configured to push the trigger plate 22 to rotate in response to the upward movement of the trigger assembly 1 caused by the slack in the steel strip 4. Optionally, the trigger assembly 1 is clamped on the vertically arranged steel strip 4 as a reference direction (e.g.,...). Figure 4As shown, the upper end of one of the two clamping plates 11 extends upward along the arc surface to the horizontal direction, and continues to extend along the horizontal direction for a distance to form a trigger part 12, so that the trigger part 12 has a larger area in the horizontal direction, so as to more accurately push the trigger plate 22 to rotate.

[0090] Figure 5 A perspective view schematically illustrating the actuating components and trigger switch of a steel belt slack monitoring device for a steel belt elevator according to an embodiment of the present disclosure is shown. Figure 6 yes Figure 5 The side view of the actuator and trigger switch shown. Figure 7 yes Figure 5 The diagram shows a three-dimensional view of the fixing bracket for the motion component. Figure 8 yes Figure 5 A 3D view of the trigger plate of the motion component shown.

[0091] According to some optional embodiments of this disclosure, such as Figures 5 to 7 As shown, the fixed bracket 21 includes a mounting plate 211, an extension 212, and a first wing plate 213. The mounting plate 211 is adapted to connect with the fixed structure of the elevator. The extension 212 extends from the side of the mounting plate 211 in a direction perpendicular to the mounting plate 211. There are two first wing plates 213, which are arranged opposite to each other. The first wing plates 213 extend from the side of the extension 212 in a direction perpendicular to the extension 212. Each of the two first wing plates 213 is provided with a first pivot hole, which is adapted to pivotally connect with the trigger plate 22.

[0092] According to some embodiments of this disclosure, the trigger switch 3 includes a proximity switch, which includes a proximity switch body and a sensing element. The proximity switch body is mounted on a fixed bracket 21. The sensing element is mounted on a first end of a trigger plate 22, and a second end of the trigger plate 22 opposite to the first end is mounted above the trigger assembly. In response to the sensing element approaching the proximity switch body, the proximity switch body is activated.

[0093] According to some embodiments of this disclosure, the proximity switch 3 includes an inductive proximity switch.

[0094] According to some alternative embodiments of this disclosure, the trigger switch includes a contact switch, such as... Figure 5 and Figure 6 As shown, the contact switch includes a contact switch body, which is mounted on a fixed bracket 21 and has a button. The trigger plate 22 presses the button in response to approaching the contact switch body, thereby activating the contact switch body.

[0095] Figure 8 yes Figure 5 A 3D view of the trigger plate of the motion component shown.

[0096] According to some embodiments of this disclosure, such as Figure 8 As shown, the trigger plate 22 includes a main body 221, a rotating rod 224, an actuating part 222, and a pressure plate 223.

[0097] According to some embodiments of this disclosure, the body portion 221 is provided with a second pivot hole adapted to the first pivot hole. A rotating rod 224 is pivotally connected to both the first and second pivot holes. An actuating part 222 extends from one end of the body portion 221 and is configured to rotate the body portion 221 around the rotating rod 224 in response to a push from the trigger component 1. A pressure plate 223 extends from the other end of the body portion 221 in an arc manner and is configured to press the button in response to the rotation of the body portion 221.

[0098] According to some embodiments of this disclosure, the number of trigger components 1 is multiple sets, and the multiple sets of trigger components 1 are sequentially clamped on multiple steel strips 4 arranged side by side; the trigger plate 22 also includes an actuating rod 225, which is disposed on the actuating part 222 and is configured to be disposed above the multiple sets of trigger components 1.

[0099] In this embodiment, a contact switch can monitor the slack of multiple steel strips simultaneously. The slack of any one steel strip can cause the corresponding trigger component 1 to push the action rod 225 to activate the contact switch.

[0100] In this embodiment, with Figure 8 Based on the front-back and left-right directions, the pressure plate 223 and the actuating part 222 are located at the left and right ends of the main body 221, respectively.

[0101] According to some embodiments of this disclosure, the trigger plate 22 further includes two opposing second wing plates 227, which extend from the side of the actuating part 222 in a direction perpendicular to the actuating part 222, and the actuating rod 225 passes through the two second wing plates 227. Monitoring is performed using an actuating rod 225 of appropriate length based on the actual number and size parameters of the steel strip 4 to be monitored, resulting in greater applicability and less space occupation.

[0102] According to some embodiments of this disclosure, the trigger plate further includes two opposing third wing plates 228, which extend from the side of the body portion 221 in a direction perpendicular to the body portion 221, and the third wing plates 228 are provided with the second pivot hole. The first wing plate 213 and the third wing plates 228 are pivotally connected with the rotating rod 224.

[0103] According to some embodiments of this disclosure, the trigger plate 222 further includes a stop block 226, which is disposed on one or both sides of the body portion 221. A positioning member adapted to the stop block 226 is provided on the fixed bracket 21; wherein the center of gravity of the trigger plate 22 is located between the rotating rod 224 and the actuating part 222, and the trigger plate 22 is configured to rest on the positioning member based on its own weight and the stop block 226, so that the actuating part 222 remains horizontal.

[0104] In this embodiment, when the steel belt 4 is in normal working condition, the trigger plate 22 is placed on the positioning component via the stop block 226, and the contact switch is not activated. When the steel belt 4 becomes slack, the trigger assembly 1 moves upward under the pull of the spring in the rope head assembly and pushes the trigger plate 22 to rotate, causing the pressure plate 223 to press the button of the contact switch, thereby activating the contact switch to indicate that the steel belt has become slack. After the staff completes the inspection and maintenance, the steel belt 4 is brought back to a taut state, the trigger assembly moves downward with the steel belt, the trigger assembly 1 loses contact with the trigger plate 22, and the trigger plate 22 flips under its own weight to the position where the stop block 226 is placed on the positioning component. The pressure plate 223 loses contact with the button of the contact switch, and the slack monitoring of the steel belt 4 is resumed.

[0105] Another embodiment of this disclosure provides a steel belt elevator, including a rope end assembly 6, a steel belt, and a steel belt slack monitoring device as described in any of the foregoing embodiments. The rope end assembly 6 is arranged side by side with a guide rail 5, and one end of the steel belt 4 is connected to the lower end of the rope end assembly 6; the triggering component 1 of the steel belt slack monitoring device is mounted on the steel belt 4 near one end of the rope end assembly 6. Optionally, the actuating component is mounted on the guide rail 5 or other fixed structure.

[0106] The embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. It should be noted that implementations not illustrated or described in the drawings or the main text of the specification are forms known to those skilled in the art and have not been described in detail. Furthermore, the definitions of the various components described above are not limited to the specific structures, shapes, or methods mentioned in the embodiments, and those skilled in the art can easily modify or substitute them.

[0107] It should also be noted that, in the specific embodiments of this disclosure, unless otherwise stated otherwise, the numerical parameters in this specification and the appended claims are approximate values ​​and can be changed according to the desired characteristics obtained from the content of this disclosure. Specifically, all numbers used in the specification and claims to indicate dimensions, range conditions, etc., of the composition should be understood to be modified by the term "about" in all cases. Generally, this means that there may be variations of ±10% in some embodiments, ±5% in some embodiments, ±1% in some embodiments, and ±0.5% in some embodiments.

[0108] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this disclosure can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this disclosure. In particular, the features described in the various embodiments and / or claims of this disclosure can be combined or combined in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or combinations fall within the scope of this disclosure.

[0109] The specific embodiments described above further illustrate the purpose, technical solutions, and beneficial effects of this disclosure. It should be understood that the above descriptions are merely specific embodiments of this disclosure and are not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A steel belt slack monitoring device suitable for steel belt elevators, characterized in that, include: Trigger components, suitable for clamping onto steel strips, include: Two clamping plates are arranged opposite each other, and grooves adapted to the steel strip to be clamped are provided on the opposite sides of the two clamping plates. Fasteners, provided on the clamping plates, are adapted to adjust the distance between the two clamping plates so that the two clamping plates clamp or disengage from the steel strip; The trigger portion extends from one end of the clamping plate in a direction perpendicular to the side of the clamping plate; Action components, including: The fixed bracket is configured to connect to the elevator's fixed structure. A trigger plate, pivotally mounted on the fixed bracket, is configured to be positioned above the trigger assembly; and A trigger switch is provided, wherein the triggering part is configured to push the trigger plate to rotate in response to the upward movement of the triggering assembly caused by the slack of the steel strip, thereby activating the trigger switch.

2. The steel strip relaxation monitoring device according to claim 1, characterized in that, The trigger switch includes a proximity switch, the proximity switch comprising: The proximity switch body is mounted on the fixed bracket; and A sensor is disposed on a first end of the trigger plate, and a second end of the trigger plate opposite to the first end is disposed above the trigger assembly. In response to the sensor approaching the proximity switch body, the proximity switch body is activated.

3. The steel strip relaxation monitoring device according to claim 2, characterized in that, The proximity switch includes an inductive proximity switch.

4. The steel strip relaxation monitoring device according to claim 1, characterized in that, The trigger switch includes a contact switch, and the contact switch includes: A contact switch body is mounted on the fixed bracket, and a button is provided on the contact switch body; The trigger plate presses the button in response to approaching the contact switch body, thereby activating the contact switch body.

5. The steel strip relaxation monitoring device according to claim 4, characterized in that, The fixing bracket includes: Mounting plate, which is suitable for connection with the fixed structure of the elevator; An extension extends from the side of the mounting plate in a direction perpendicular to the mounting plate; and Two opposing first wing plates extend from the side of the extension in a direction perpendicular to the extension. Each of the two first wing plates is provided with a first pivot hole, which is adapted to pivotally connect with the trigger plate.

6. The steel strip relaxation monitoring device according to claim 5, characterized in that, The trigger plate includes: The main body is provided with a second pivot hole that is adapted to the first pivot hole; The rotating rod is pivotally connected to the first pivot hole and the second pivot hole; An actuating part extends from one end of the main body and is configured to drive the main body to rotate around the rotating rod in response to the push of the triggering component. A pressure plate extends in an arc from the other end of the body portion, and the pressure plate is configured to press the button in response to rotation of the body portion.

7. The steel strip relaxation monitoring device according to claim 6, characterized in that, The number of triggering components is multiple sets, and the multiple sets of triggering components are sequentially clamped on multiple steel strips arranged side by side; The trigger plate also includes: An actuating lever is disposed on the actuating part, and the actuating lever is configured to be disposed above the plurality of triggering components.

8. The steel strip relaxation monitoring device according to claim 7, characterized in that, The trigger plate also includes: Two opposing second wing plates extend from the side of the actuating part in a direction perpendicular to the actuating part, and the actuating rod passes through the two second wing plates.

9. The steel strip relaxation monitoring device according to claim 6, characterized in that, The trigger plate also includes: A stop block is provided on one or both sides of the main body. The fixed bracket is provided with a positioning component that is adapted to the stop block; The center of gravity of the trigger plate is located between the rotating rod and the actuating part. The trigger plate is configured such that the stop block rests on the positioning member based on its own weight, so that the actuating part remains horizontal.

10. The steel strip relaxation monitoring device according to claim 6, characterized in that, The trigger plate also includes: Two opposing third wing plates extend from the side of the main body in a direction perpendicular to the main body, and the third wing plates are provided with the second pivot hole.

11. A steel-belt elevator, characterized in that, include: Rope end assembly; A steel strip, one end of which is connected to the lower end of the rope head assembly; The steel strip relaxation monitoring device as described in any one of claims 1 to 10; The triggering component of the steel strip slack monitoring device is installed on one end of the steel strip near the rope head assembly.

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