Real-time monitoring device for abrasion of steel wire rope of elevator

Abstract

The invention relates to an elevator steel wire rope abrasion real-time monitoring device which comprises a fixed base, the inner side of the fixed base is rotationally connected with a chassis structure, the chassis structure is fixedly connected with a monitoring structure, a monitoring module clamping groove is formed in the monitoring structure, and a laser distance measuring sensor is clamped in the monitoring module clamping groove. A motor is fixedly connected to the fixed base, the output end of the motor is fixedly connected with a driving gear, and the driving gear is connected with a chassis structure in an engaged mode. The surface around the main steel wire rope can be detected through the monitoring structure, incomplete detection of a single distance measuring sensor is avoided, the monitoring structure displays the diameter of the steel wire rope through data processing and the most direct data, and abrasion of the steel wire rope can be judged more easily.

Description

Technical Field

[0001] This invention relates to the field of elevator wire rope monitoring technology, and in particular to a real-time monitoring device for elevator wire rope wear. Background Technology

[0002] An elevator is a vertical lifting machine used to carry goods or people. A vertical elevator has a car. When the elevator is running, steel wire ropes are used to connect the car and realize the up and down movement of the car. During the winding and unwinding of the steel wire rope, the traction machine and guide wheels will squeeze the steel wire rope. After the elevator has been running for a long time, the steel wire rope needs to be inspected to prevent the steel wire rope from being severely worn and causing safety hazards.

[0003] In existing technologies, the wear of wire ropes is mainly detected using various distance sensors. However, since a single sensor is used to measure the distance at a fixed position, the detection surface is only one side of the wire rope. During the operation of the wire rope, the surface of wear is not fixed. Detecting only one side with a single sensor will lead to incomplete detection and easy omissions. As a result, the worn surface of the wire rope will not be detected, which will pose a safety hazard. Summary of the Invention

[0004] In view of the above-mentioned problems existing in the prior art, the main objective of the present invention is to provide a real-time monitoring device for elevator wire rope wear.

[0005] The technical solution of the present invention is as follows: a real-time monitoring device for wear of elevator wire rope, comprising a fixed base, a chassis structure rotatably connected to the inner side of the fixed base, a monitoring structure fixedly connected to the chassis structure, a monitoring module slot provided in the monitoring structure, a laser ranging sensor being snapped into the monitoring module slot, a motor fixedly connected to the fixed base, a drive gear fixedly connected to the output end of the motor, and the drive gear meshing with the chassis structure; The monitoring structure is divided into a right module and a left module. Both the right and left modules are symmetrically provided with monitoring module slots. The laser ranging sensors on the right and left modules are a set of monitoring sensors. The monitoring structure is provided with multiple sets of monitoring sensors. Each set of monitoring sensors is connected to a mobile terminal through signal transmission. The detection surfaces of the multiple sets of monitoring sensors form a circular structure.

[0006] In a preferred embodiment, the fixed base includes a secondary base and a main base. A motor is fixedly connected to the main base. The secondary base and the main base are connected by an interference fit. The fixed base is provided with a hollow ring, and a sliding groove is provided inside the hollow ring. The chassis structure is slidably connected to the sliding groove.

[0007] In a preferred embodiment, the chassis structure is divided into a left chassis and a right chassis. The left chassis is fixedly connected to the right chassis by bolts. Both the left and right chassis have a tray portion on their inner sides. Each tray portion of the left and right chassis has several fixing posts. The center of the left and right chassis forms a main steel wire rope through-hole. The fixing posts pass through the corresponding right and left modules. The top of the fixing posts is threaded with fastening bolts.

[0008] In a preferred embodiment, both the right and left modules are equipped with batteries, and the monitoring module slot has a power interface on one side, which is a charging and discharging interface.

[0009] In a preferred embodiment, the outer side of the monitoring module slot facing the monitoring structure is an open surface, and the inner side of the monitoring module slot is a monitoring surface. The monitoring surface is divided into a laser emitting surface and a reflective receiving surface. A rubber frame is fixedly provided around the outer periphery of the open surface, and the rubber frame compresses the laser ranging sensor to form a fixed shape.

[0010] In one preferred embodiment, the chassis structure has multiple specifications, each with a different diameter but the same height and thickness.

[0011] In one preferred embodiment, the motor has a built-in control module, and a power cord is provided on one side of the main base.

[0012] In one preferred embodiment, the mobile terminal processes the data from each group of monitoring sensors. The data processing calculation method is: the distance between a group of laser ranging sensors - the measurement data of each laser ranging sensor in the group = the diameter of the main steel wire rope.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are that the monitoring structure can detect the entire circumference of the main wire rope, avoiding the incomplete detection by a single distance sensor. The monitoring structure processes the data and displays the diameter of the wire rope in the most direct way, which is more conducive to judging the wear of the wire rope. Attached Figure Description

[0014] Figure 1 This invention provides an overall structural schematic diagram of an elevator wire rope wear real-time monitoring device; Figure 2 This invention provides a schematic diagram of the fixed base structure of a real-time monitoring device for elevator wire rope wear; Figure 3 This invention provides a schematic diagram of the chassis structure of a real-time monitoring device for elevator wire rope wear. Figure 4 This invention provides schematic diagrams of different specifications of chassis structures for a real-time monitoring device for elevator wire rope wear. Figure 5 This invention provides a schematic diagram of the connection between the main base and the chassis structure of a real-time monitoring device for elevator wire rope wear; Figure 6 This invention provides a schematic diagram of the monitoring structure of a real-time monitoring device for elevator wire rope wear; Figure 7 This invention provides a schematic diagram of the left module structure of a real-time monitoring device for elevator wire rope wear. Figure 8 This invention provides a schematic diagram of a laser ranging sensor for a real-time monitoring device for elevator wire rope wear.

[0015] Legend: 1. Fixed base; 11. Sub-base; 12. Main base; 13. Slide groove; 2. Chassis structure; 21. Left chassis; 22. Right chassis; 23. Tray section; 24. Main steel wire rope through-hole; 25. Fixed column; 3. Monitoring structure; 31. Right module; 32. Left module; 33. Power interface; 4. Monitoring module slot; 5. Laser rangefinder sensor; 6. Motor; 7. Drive gear. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Example A real-time monitoring device for elevator wire rope wear includes a fixed base 1, a chassis structure 2 rotatably connected to the inner side of the fixed base 1, a monitoring structure 3 fixedly connected to the chassis structure 2, a monitoring module slot 4 provided in the monitoring structure 3, a laser rangefinder sensor 5 being snapped into the monitoring module slot 4, the laser rangefinder sensor 5 being an LMI2500 series laser sensor, a motor 6 fixedly connected to the fixed base 1, and a drive gear 7 fixedly connected to the output end of the motor 6, the drive gear 7 meshing with the chassis structure 2. The device is fixed in the control layer at the vertical position where the main wire rope passes through the elevator control layer, allowing the main wire rope to pass vertically through the device. The distance between the laser rangefinder sensor 5 and the main wire rope is measured by the laser rangefinder sensor 5. The monitoring module slots 4 are symmetrically arranged to align each group of laser ranging sensors 5. The distance between each group of laser ranging sensors 5 is fixed. Multiple groups of laser ranging sensors 5 surround the main steel wire rope, ensuring that every surface of the main steel wire rope is detected, avoiding omissions. The motor 6 drives the chassis structure 2 to rotate, causing the monitoring structure 3 to rotate and the detection position to change. When the main steel wire rope is stationary, multiple measurements can be taken by changing the detection position to achieve measurement accuracy. When the main steel wire rope is in motion, dynamic detection can be achieved as the detection position changes. The high-frequency detection of the laser ranging sensors 5 forms a linear image, which provides a more intuitive detection of the wear condition of the steel wire rope. The monitoring structure 3 is divided into a right module 31 and a left module 32. Both the right module 31 and the left module 32 are symmetrically provided with monitoring module slots 4. The laser ranging sensors 5 on the right module 31 and the left module 32 are a set of monitoring sensors. The monitoring structure 3 is provided with multiple sets of monitoring sensors. Each set of monitoring sensors is connected to the mobile terminal through signal transmission. The detection surfaces of multiple sets of monitoring sensors form a circular structure. The symmetrical arrangement of the monitoring structure 3 is to ensure that the main steel wire rope is centered during installation, making installation easier. Each monitoring module slot 4 can fix the internal laser ranging sensor 5 and also serves to align it. In case of damage or malfunction of the laser ranging sensor 5, a single laser ranging sensor 5 can be directly replaced, facilitating later maintenance and replacement.

[0020] The fixed base 1 includes a secondary base 11 and a main base 12. The motor 6 is fixedly connected to the main base 12. The secondary base 11 and the main base 12 are connected by an interference fit. The fixed base 1 is provided with a hollow ring, and a sliding groove 13 is provided inside the hollow ring. The chassis structure 2 is slidably connected to the sliding groove 13. The main base 12 can be used independently. In the elevator control floor, due to limited installation space, only the main base 12 can be installed to serve as a stable support base. The sliding groove 13 inside the hollow ring serves two purposes: first, to facilitate the rotation of the chassis structure 2, and second, to improve the stability of the chassis structure 2. There are two situations where the auxiliary base 11 and the main base 12 are used simultaneously: one is when the diameter of the main wire rope is suitable for connecting the auxiliary base 11 and the main base 12; the other is when the diameter of the main wire rope is larger, and connecting the auxiliary base 11 and the main base 12 would restrict the movement of the main wire rope. In this case, the auxiliary base 11 and the main base 12 need to be fixed separately, with the larger chassis structure 2 located between the auxiliary base 11 and the main base 12.

[0021] The chassis structure 2 is divided into a left chassis 21 and a right chassis 22. The left chassis 21 is fixedly connected to the right chassis 22 by bolts. The inner side of both the left chassis 21 and the right chassis 22 is provided with a tray part 23. Several fixing posts 25 are provided on the tray part 23 of both the left chassis 21 and the right chassis 22. The center of the left chassis 21 and the right chassis 22 forms a main steel wire rope through-hole 24. The fixing posts 25 pass through the corresponding right module 31 and left module 32. The top of the fixing posts 25 is threaded with fastening bolts. The use of bolts for fixing can improve stability.

[0022] Both the right module 31 and the left module 32 are equipped with batteries. The monitoring module slot 4 has a power interface 33 on one side. The power interface 33 is a charging and discharging interface. The power interface 33 can charge the internal batteries and also provide power to the laser rangefinder 5, so as to achieve continuous and long-term use.

[0023] The outer side of the monitoring module slot 4 facing the monitoring structure 3 is an open surface, and the inner side of the monitoring module slot 4 is a monitoring surface. The monitoring surface is divided into a laser emitting surface and a reflection receiving surface. A rubber frame is fixedly provided around the outer periphery of the open surface. The rubber frame compresses the laser ranging sensor 5 to form a fixed position. The rubber frame extends into the open surface of the monitoring module slot 4, thereby fixing the laser ranging sensor 5.

[0024] Chassis structure 2 comes in various specifications, each with a different diameter but the same height and thickness. Different specifications of chassis structure 2 can be selected according to the actual situation, making it universal.

[0025] Motor 6 comes with its own control module, and a power cord is provided on one side of the main base 12 for easy external power supply and remote control.

[0026] The mobile terminal processes the data from each set of monitoring sensors. The data processing calculation method is: the distance between a set of laser rangefinders 5 - the measurement data of each laser rangefinder 5 in the set = the diameter of the main steel wire rope. Using this calculation method, the diameter of the main steel wire rope can be obtained directly, and the wear of the steel wire rope can be detected intuitively. Furthermore, the diameter data of the main steel wire rope can be directly generated into a linear image on the mobile terminal, making it more convenient and faster to judge the wear condition.

[0027] Working principle: Select a suitable chassis structure 2 and installation method, install the device on the elevator control floor, and make the main steel wire rope pass vertically through the main steel wire rope through-hole 24. First, initialize the settings: use the laser range sensor 5 to measure the distance between a group of laser range sensors 5, and input the distance to the mobile terminal. When the main wire rope is stopped: via the mobile terminal, the laser rangefinder 5 is activated. A set of laser rangefinders 5 transmits data to the mobile terminal, which directly outputs the diameter data of the main wire rope. The data from multiple sets of laser rangefinders 5 are displayed intuitively on the mobile terminal. Then, the motor 6 is started to change the detection position of the laser rangefinders 5 and measure again. Multiple sets of data are compared to more intuitively and comprehensively detect the wear of the wire rope. During the operation of the main wire rope: the laser rangefinder 5 is activated via a mobile terminal. Each laser rangefinder 5 outputs the wire rope diameter at a fixed time and frequency. The output is processed by the mobile terminal to form a linear image, allowing observation of wear. Furthermore, the laser rangefinder 5 is activated by starting the motor 6 to change its detection position. Multiple random measurements at different positions not only comprehensively detect wear but also improve the accuracy of the detection.

[0028] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A real-time monitoring device for wear of elevator wire ropes, comprising a fixed base (1), characterized in that: The fixed base (1) is rotatably connected to the chassis structure (2), and the chassis structure (2) is fixedly connected to the monitoring structure (3). The monitoring structure (3) is provided with a monitoring module slot (4). The monitoring module slot (4) is fitted with a laser ranging sensor (5). The fixed base (1) is fixedly connected to the motor (6), and the output end of the motor (6) is fixedly connected to the drive gear (7). The drive gear (7) meshes with the chassis structure (2). The monitoring structure (3) is divided into a right module (31) and a left module (32). The right module (31) and the left module (32) are symmetrically provided with monitoring module slots (4). The laser ranging sensors (5) on the right module (31) and the left module (32) are a set of monitoring sensors. The monitoring structure (3) is provided with multiple sets of monitoring sensors. Each set of monitoring sensors is connected to a mobile terminal through signal transmission. The detection surfaces of the multiple sets of monitoring sensors form a circular structure.

2. The elevator wire rope wear real-time monitoring device according to claim 1, characterized in that: The fixed base (1) includes a secondary base (11) and a main base (12). A motor (6) is fixedly connected to the main base (12). The secondary base (11) and the main base (12) are connected by an interference fit. A hollow ring is provided on the fixed base (1). A sliding groove (13) is provided inside the hollow ring. The chassis structure (2) is slidably connected to the sliding groove (13).

3. The elevator wire rope wear real-time monitoring device according to claim 1, characterized in that: The chassis structure (2) is divided into a left chassis (21) and a right chassis (22). The left chassis (21) is fixedly connected to the right chassis (22) by bolts. The inner sides of the left chassis (21) and the right chassis (22) are provided with tray portions (23). The tray portions (23) of the left chassis (21) and the right chassis (22) are provided with several fixing posts (25). The center of the left chassis (21) and the right chassis (22) forms a main steel wire rope through-hole (24). The fixing posts (25) pass through the corresponding right module (31) and left module (32). The top of the fixing posts (25) is threaded with fastening bolts.

4. The elevator wire rope wear real-time monitoring device according to claim 1, characterized in that: Both the right module (31) and the left module (32) are equipped with batteries. The monitoring module slot (4) has a power interface (33) on one side, which is a charging and discharging interface.

5. The elevator wire rope wear real-time monitoring device according to claim 1, characterized in that: The outer side of the monitoring module slot (4) facing the monitoring structure (3) is an open surface, and the inner side of the monitoring module slot (4) is a monitoring surface. The monitoring surface is divided into a laser emitting surface and a reflection receiving surface. A rubber frame is fixedly provided around the outer periphery of the open surface. The rubber frame squeezes the laser ranging sensor (5) to form a fixed shape.

6. The elevator wire rope wear real-time monitoring device according to claim 1, characterized in that: The chassis structure (2) has multiple specifications, each with a different diameter but the same height and thickness.

7. The elevator wire rope wear real-time monitoring device according to claim 1, characterized in that: The motor (6) has its own control module, and the main base (12) has a power cord on one side.

8. The elevator wire rope wear real-time monitoring device according to claim 1, characterized in that: The mobile terminal processes the data of each group of monitoring sensors. The data processing calculation method is: the distance between a group of laser ranging sensors (5) - the measurement data of each laser ranging sensor (5) in the group = the diameter of the main steel wire rope.

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