Elevator traction steel wire rope (steel belt) damage detection device

Abstract

The invention relates to a damage detection device for an elevator traction steel wire rope (steel belt). The damage detection device comprises an adjustable rapid installation support which is fixed to the side of a traction wheel or a guide wheel in parallel. One end of the beating rod mounted on the bracket slightly clamps the microswitch mounted on the bracket, and the distance between the beating rod and the steel wire rope (steel belt) is adjusted to a proper position; the output ends of the normally-open and normally-closed on-off switches of the microswitches are connected to an elevator control cabinet; if an elevator system has a door lock loop detection function, normally-closed output is connected into a door lock safety loop of an elevator control cabinet in parallel, when a steel wire rope (steel belt) is damaged, a damaged protruding part pulls and impacts a hitting rod, the hitting rod displaces to trigger a microswitch to act, the microswitch connected into the door lock safety loop is connected, and the door lock safety loop is detected. After the elevator runs to the nearest leveling instruction door opening, the elevator control system detects that a door lock safety circuit is still connected, the elevator stops running, and a door lock fault is reported; if the elevator system does not have the door lock loop detection function, the normally-open output is connected into a speed limiter or other safety loops of an elevator control cabinet in series, when a steel wire rope (steel belt) is damaged, a damaged protruding part pulls and impacts a hitting rod, the hitting rod displaces to trigger a microswitch to act, the microswitch connected into the speed limiter or other safety loops is switched off, and the door lock loop detection function is achieved. The elevator stops running immediately; after the elevator stops running, the damaged position and the damaged condition of the steel wire rope or the steel belt can be found in front of and behind the elevator stopping position.

Description

Technical Field

[0001] This invention relates to the field of elevator equipment technology, specifically to a damage detection device for elevator traction steel wire ropes (steel belts). Background Technology

[0002] In recent years, China's elevator industry has developed rapidly, with the number of elevators in the country reaching 11.5324 million units in 2024. With the rapid increase in the number of elevators, how to ensure the safe operation of elevator equipment in real time has become a major problem that urgently needs to be solved.

[0003] The elevator traction steel wire rope (steel belt) is one of the most important safety components of an elevator. Due to the different actual usage frequencies of elevators, the service life of the steel wire rope (steel belt) also varies.

[0004] Every year, relevant national testing agencies and maintenance departments are required to conduct regular or irregular inspections of the working condition of elevator traction steel wire ropes (strips). During these inspections, any broken strands or damage to the wire ropes (strips) must be promptly addressed and the elevators replaced. However, regular or irregular inspections alone cannot provide real-time monitoring. The original manufacturer's testing equipment for the steel strips can only detect broken strands in real time, not damage. If the wire rope (strip) continues to operate after breaking strands, the damage will spread rapidly, eventually leading to breakage and posing a serious safety hazard to passengers and equipment.

[0005] Common methods for detecting damage to elevator traction steel wire ropes (steel strips) include visual and tactile inspection, ultrasonic inspection, and X-ray inspection.

[0006] Visual and tactile inspection is the most basic inspection method. It involves inspectors visually observing and physically touching the surface of the wire rope (strip) to check for obvious defects such as broken wires or damage. This method is simple to operate and requires no complex equipment, but it is labor-intensive and inefficient.

[0007] Ultrasonic testing utilizes the propagation characteristics of ultrasonic waves in steel wire ropes (strips) to detect internal defects. However, this method requires high cleanliness and temperature control of the steel wire rope (strip) surface. The friction between the steel wire rope (strip) and transmission components during prolonged operation generates high heat, and the steel wire rope (strip) itself produces a thermal effect, which adversely affects the testing and leads to deviations in the results. Furthermore, the equipment and manual operation costs are high.

[0008] X-ray inspection is a steel wire rope (steel strip) fracture detector evolved from flaw detection equipment. Although it can detect steel wire rope (steel strip) damage and fracture in the early stage, it is cumbersome to install and extremely costly.

[0009] In summary, existing wire rope (steel strip) inspection technologies have certain shortcomings in terms of inspection range, environmental adaptability, inspection reliability, and cost, making it difficult to meet the needs for comprehensive, efficient, and non-destructive real-time inspection of wire ropes (steel strips). To address these issues, the development of a versatile, real-time, simple-to-install, and low-cost damage detection device for wire ropes (steel strips) is an urgent technical challenge for the industry. Summary of the Invention

[0010] To solve the above-mentioned technical problems, this invention provides a real-time damage detection device for traction steel wire ropes (steel belts) of all new and old elevators that is simple to install, low in cost, and applicable. This invention is achieved through the following technical solution: Adjustable quick-install bracket that is fixed parallel to the side of the traction sheave or guide sheave; One end of the lever mounted on the bracket is fixed, and the other end is gently locked onto the micro switch mounted on the bracket. The distance between the lever and the wire rope or steel strip is adjusted to a suitable position. One set of normally open and one set of normally closed microswitches are connected to the elevator control cabinet. When the wire rope (steel strip) is damaged, the protruding part of the damage pulls and hits the impact rod. The displacement of the impact rod triggers the micro switch, thereby triggering the safety mechanism of the elevator control system and forcing the elevator to stop running. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the wire rope (steel strip) damage detection device according to an embodiment of the present invention.

[0012] Figure 2 for Figure 1 A top-down view of the untriggered normal state at point A.

[0013] Figure 3 for Figure 1 Top view of the triggering of the steel wire rope (steel strip) at point B.

[0014] Figure 4 This is a schematic diagram illustrating the working principle of the wire rope (steel strip) damage detection device according to an embodiment of the present invention.

[0015] Figure 5 Electrical schematic diagram of an embodiment of the present invention In the diagram, 1-Quick-install bracket, 2-Pressure guide plate, 3-Connecting nut, 4-Actuating rod, 5-Triggering medium (elevator traction wire rope (steel belt)), 6-Micro switch Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0017] The specific embodiments described herein are merely illustrative of the invention. As will be appreciated by those skilled in the art, the described embodiments can be modified in various ways without departing from the scope of the invention. Therefore, the drawings and descriptions are considered to be exemplary in nature and not restrictive.

[0018] like Figure 1 As shown, the elevator traction steel wire rope (steel belt) damage detection device of the present invention is used to gently lock one end of the lever 4 to the micro switch 6, and then fixed to a suitable position about 1mm away from the steel wire rope (steel belt) on the guide wheel side with the pressure guide plate 2 and the connecting nut 3.

[0019] Connect the normally open or normally closed output terminals of the 6 micro switches to the corresponding safety circuit of the elevator control cabinet according to the functions of the elevator control system. When the 5 wire rope (steel strip) is damaged, the protruding part of the damage pulls and hits the 4 lever. The 4 lever is displaced and disengaged from the 6 micro switch contact, triggering the 6 micro switch to act, thereby triggering the elevator control system safety mechanism and forcing the elevator to stop running.

[0020] After the elevator stops running, the location and condition of the broken steel wire rope (steel belt) can be found before and after the elevator stops.

[0021] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A device for detecting damage to elevator traction steel wire rope (steel strip), characterized in that, It includes an adjustable quick-install bracket that is fixed parallel to the side of the traction sheave or guide sheave. One end of the lever on the bracket gently latches onto a micro switch installed on the bracket. The distance between the lever and the traction wire rope (steel belt) can be adjusted to any suitable position.

2. A device for detecting damage to elevator traction steel wire rope (steel strip) according to claim 1, characterized in that... An adjustable quick-install bracket can be flexibly and quickly fixed parallel to the side of the traction sheave or guide sheave. The distance between the strike bar and the traction wire rope (steel belt) can be adjusted to a suitable position. Even a slight break or protrusion in the traction wire rope (steel belt) can pull and impact the strike bar, thereby triggering the micro switch action linked to the strike bar.

3. A device for detecting damage to elevator traction steel wire rope (steel strip) according to claim 2, characterized in that... When the elevator traction steel wire rope (steel belt) damage detection device is activated, it outputs a switch signal to the elevator control cabinet, thereby triggering the elevator's safety protection and forcing the elevator to stop running.

4. A device for detecting damage to elevator traction steel wire rope (steel strip) according to claim 1, characterized in that... By combining microswitches with levers, single or multiple combined signals can be output to elevator control systems, audible and visual alarms, or third-party systems for use.

5. A device for detecting damage to elevator traction steel wire rope (steel strip) according to claim 1, characterized in that... It is 100% compatible with all new and old elevator systems, does not change the original elevator mechanical structure, does not change the original elevator control system, does not damage the original elevator electrical principle, and is easy to install and debug.

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