Portable weak magnetic nondestructive inspection device for steel wire rope row pole of elevator

Abstract

The utility model discloses a portable weak magnetic nondestructive inspection device for an elevator steel wire rope row pole. Belongs to elevator detection equipment. The device comprises a probe, a magnetic attraction fixing seat and a gooseneck pipe, the middle of the probe is provided with a strip-shaped detection area for allowing an elevator steel wire rope row to penetrate through, a plurality of GMI sensors are evenly and symmetrically arranged on the two sides of the detection area in an array mode, and the GMI sensors are used for detecting magnetic field changes in the detection area; the magnetic attraction fixing seat is used for being fixedly connected with a metal structure; one end of the gooseneck pipe is connected with the probe, and the other end is connected with the magnetic fixing seat. By means of the combined design of the probe, the magnetic attraction fixing base and the gooseneck pipe, efficient, accurate and convenient nondestructive flaw detection of the elevator steel wire rope is achieved, the problems that in the prior art, portability is poor, detection accuracy is not stable, and the position of the probe is inconvenient to adjust are effectively solved, and therefore safe operation of an elevator is guaranteed.

Description

Technical Field

[0001] The utility model relates to elevator safety detection equipment, in particular to a portable elevator steel rope row extremely weak magnetic non-destructive flaw detection device. Background Art

[0002] With the continuous advancement of urbanization, elevators, an indispensable means of vertical transportation in high-rise buildings, have seen explosive growth in their use. The safe operation of elevators is directly related to the safety of people's lives and property. The condition of the wire rope, a key load-bearing component of an elevator, has a crucial impact on elevator safety. Traditional elevator wire rope inspection methods rely on regular manual inspections, but this approach has numerous drawbacks, such as low inspection efficiency and difficulty detecting early internal defects. Against this backdrop, nondestructive testing (NDT) technology has been increasingly used in elevator wire rope inspection.

[0003] Currently, the main non-destructive flaw detection technologies for elevator wire ropes include magnetic particle testing, eddy current testing, and weak magnetic testing. Magnetic particle testing magnetizes the wire rope, generating a leakage magnetic field at surface and near-surface defects. This magnetic field attracts magnetic particles, revealing the defect shape. Eddy current testing uses the principle of electromagnetic induction to generate eddy currents in the wire rope, and the changes in these eddy currents are used to identify defects. Weak magnetic testing, on the other hand, relies on the fact that internal defects in the wire rope, influenced by the Earth's magnetic field, cause changes in the magnetic field distribution. This weak magnetic field change allows for flaw detection in the wire rope.

[0004] However, there are still some problems with the existing weak magnetic non-destructive flaw detection technology and equipment for elevator wire ropes. On the one hand, some flaw detection equipment is large in size and heavy in weight, making it inconvenient to carry and operate on-site. Especially in some elevator shafts with limited space or elevator inspection scenarios in old buildings, it is extremely inconvenient to use, which limits its scope of application. On the other hand, the existing equipment still needs to be improved in terms of detection accuracy and stability. For some tiny, early internal defects of the wire rope, it may be difficult to accurately detect and identify them due to external interference factors or other reasons, and it is easy to miss detection or misjudgment. In addition, the relative position adjustment of the probe and the wire rope of the existing flaw detection device is not flexible enough. During the actual detection process, it is difficult to always maintain the optimal detection distance and angle, which affects the accuracy of the test results. At the same time, some equipment is unstable. During the detection process, the probe position may be offset due to vibration and other reasons, further reducing the reliability of the detection. Utility Model Content

[0005] In view of the shortcomings of existing technologies, this utility model provides a portable, extremely weak magnetic nondestructive flaw detection device for elevator wire ropes. This device, through the combined design of a probe, a magnetic mount, and a gooseneck tube, achieves efficient, accurate, and convenient nondestructive flaw detection of elevator wire ropes. This effectively addresses existing issues such as poor portability, unstable detection accuracy, and inconvenient probe position adjustment, thereby ensuring safe elevator operation.

[0006] The technical means adopted by this utility model are as follows:

[0007] A portable elevator steel wire rope extremely weak magnetic non-destructive flaw detection device, comprising: a probe, a magnetic fixing seat and a gooseneck tube;

[0008] The probe has a strip-shaped detection area in the middle for accommodating the elevator wire rope row passing through. On both sides of the detection area, a number of GMI sensors are arranged in a uniform and symmetrical array. The GMI sensors are used to detect magnetic field changes in the detection area;

[0009] The magnetic fixing seat is used to be fixedly connected to the metal structure;

[0010] One end of the gooseneck is connected to the probe, and the other end is connected to the magnetic fixing seat.

[0011] Furthermore, the probe further includes a data acquisition module, which is used to collect and store the magnetic field change data collected by each GMI sensor.

[0012] Furthermore, the probe further includes a lithium battery, which is used to power each GMI sensor and data acquisition module.

[0013] Furthermore, the data acquisition module includes an analog-to-digital converter and a signal processing chip. The analog-to-digital converter is used to convert the analog signal output by the GMI sensor into a digital signal. The signal processing chip filters and amplifies the digital signal to obtain magnetic field change data that can characterize wire rope defects.

[0014] Furthermore, the vertical distance between the GMI sensor and the elevator wire rope row is 5-15 mm.

[0015] Furthermore, the probe housing is made of aluminum alloy.

[0016] Furthermore, the non-destructive testing device also includes a data interface provided on the probe, and the data interface is a USB interface or a wireless communication module.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. This utility model utilizes an array of GMI sensors, enabling highly sensitive detection of weak magnetic field variations around elevator wire ropes. This allows for precise identification of magnetic field anomalies caused by early-stage defects within the wire rope. Compared to traditional detection methods, this significantly improves detection accuracy, enabling earlier detection of potential safety hazards such as broken wires, wear, and corrosion. This provides a scientific basis for elevator wire rope maintenance and replacement, effectively ensuring safe elevator operation.

[0019] 2. This utility model features a portable design that allows for quick installation and removal. The magnetic mount securely attaches to metal components near the wire rope, and the flexible and adjustable gooseneck allows the probe to be quickly adjusted to the optimal testing position and angle. After testing, the device can be easily moved to the next testing point or stored and carried, significantly saving testing time and labor costs and improving testing efficiency. It is suitable for quickly completing comprehensive wire rope testing in a variety of elevator environments.

[0020] 3. This utility model utilizes a magnetic mount to resist the effects of vibration and other factors during the testing process, ensuring that the probe and wire rope maintain a relatively stable distance and position, thereby making the test signal more stable and reliable. At the same time, the internal lithium battery provides stable power support for the equipment, avoiding test interruptions or data anomalies caused by power fluctuations, ensuring the continuity and stability of the entire testing process and improving the credibility of the test results.

[0021] 4. This utility model is compact and lightweight, making it easy to carry to various elevator inspection sites. The probe housing is constructed of lightweight materials, further reducing the weight of the device. The user interface is simple and intuitive, allowing inspectors to become proficient with minimal training. The gooseneck allows for flexible adjustment of the probe position, enabling comprehensive inspection of the wire rope. This eliminates the need for complex procedures and specialized tools, improving inspection flexibility and operability. It is particularly suitable for inspection environments with limited space, such as elevator shafts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 The utility model is a structural schematic diagram of a portable elevator wire rope extremely weak magnetic non-destructive flaw detection device.

[0024] Figure 2The utility model is a schematic diagram of the internal structure of a probe of a portable elevator wire rope extremely weak magnetic non-destructive flaw detection device.

[0025] Figure 3 This is a working diagram of a probe of a portable elevator wire rope extremely weak magnetic non-destructive flaw detection device of the utility model.

[0026] In the figure: 1. Probe; 101. GMI sensor; 102. Data acquisition module; 103. Lithium battery; 2. Magnetic mount; 3. Gooseneck; 4. Wire rope. DETAILED DESCRIPTION

[0027] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0028] like Figure 1-3 As shown, the utility model provides a portable extremely weak magnetic non-destructive flaw detection device for elevator wire ropes, comprising: a probe 1, a magnetic fixing base 2, and a gooseneck tube 3. A strip-shaped detection area is designed in the middle of the probe 1 to accommodate the passage of the elevator wire rope, and a number of GMI sensors 101 are evenly and symmetrically arranged in an array on both sides to detect changes in the magnetic field. The magnetic fixing base 2 is used to be fixedly connected to the metal structure to ensure that the device is stably adsorbed on the metal parts near the elevator wire rope. One end of the gooseneck tube 3 is connected to the probe 1, and the other end is connected to the magnetic fixing base 2, so that the probe 1 can flexibly adjust its position and angle within a certain range to meet the detection needs of elevator wire ropes in different positions and directions.

[0029] Probe 1, a key component of the portable elevator wire rope ultra-weak magnetic nondestructive testing device, is primarily used for nondestructive testing of elevator wire ropes. Its sophisticated design allows it to sensitively sense subtle magnetic field changes within the wire rope, and through subsequent signal processing and other processes, determine whether the wire rope has various defects such as broken wires, wear, and rust. The probe's appearance and internal circuit structure have been specially optimized to ensure stable and efficient detection capabilities even in the complex operating environment of elevators. Its detection port may be made of special protective materials to prevent external mechanical damage or electromagnetic interference during the detection process, thereby ensuring the accuracy of the test data.

[0030] Specifically, the probe 1 contains a data acquisition module 102 and a lithium battery 103. The data acquisition module 102 is responsible for collecting and storing the magnetic field change data collected by each GMI sensor 101. It includes an analog-to-digital converter and a signal processing chip. The analog-to-digital converter converts the analog signal output by the GMI sensor 101 into a digital signal. The signal processing chip filters and amplifies the digital signal to extract magnetic field change data that can represent wire rope defects, enabling accurate detection of internal defects in elevator wire ropes. The lithium battery 103 powers each GMI sensor 101 and the data acquisition module 102, ensuring normal operation of the device and meeting the power requirements during the detection process.

[0031] The vertical distance between the GMI sensor 101 and the elevator wire rope is set at 5-15mm. This distance range ensures the sensor's sensitivity to magnetic field changes while avoiding signal interference caused by close proximity or signal attenuation caused by distance, ensuring accurate detection results. The GMI sensor 101 is arranged in an array, enabling comprehensive magnetic field detection of the elevator wire rope. This provides strong data support for the subsequent identification of minor defects within the wire rope, such as broken wires, wear, and rust, and provides reliable assurance for safe elevator operation.

[0032] The housing of probe 1 is made of aluminum alloy, which has good mechanical strength and corrosion resistance. It can be used for a long time in complex environments such as elevator shafts without being easily damaged. At the same time, the weight of the probe is reduced, making it easy to carry and operate. In addition, the non-destructive testing device also includes a data interface provided on the probe 1, which can be a USB interface or a wireless communication module. The USB interface facilitates wired connection and data transmission with external devices such as computers, enabling rapid export and analysis of test data; the wireless communication module supports wireless communication protocols such as Bluetooth, Wi-Fi or ZigBee, and can realize wireless data transmission with mobile terminals or other remote devices, facilitating real-time viewing and analysis of test data, thereby improving the efficiency and convenience of testing work.

[0033] The magnetic mount 2 is a key component that ensures the entire flaw detection device can be securely installed near the elevator wire rope. It utilizes a powerful magnetic force to attach to the wire rope bracket or other appropriately positioned metal structure, ensuring that the probe maintains an appropriate detection distance from the wire rope, enabling accurate nondestructive testing. The magnetic strength of the magnetic mount has been carefully designed and calculated to ensure secure attachment while facilitating quick installation and removal based on actual testing needs, improving testing efficiency. While its appearance is relatively simple, the internal magnetic structure and external connection interfaces have been polished to suit the installation and use requirements of the entire device.

[0034] Gooseneck 3 serves as a crucial bridge connecting probe 1 and magnetic mount 2. Its design allows the probe to flexibly adjust its position and angle within a certain range to accommodate elevator rope inspections in various locations and orientations. Gooseneck 3 exhibits excellent flexibility, maintaining a stable shape even under certain external forces. This ensures the stability of the relative position between probe 1 and wire rope 4, thereby ensuring smooth inspection. Furthermore, the material and surface treatment of gooseneck 3 have been carefully selected, resulting in wear and corrosion resistance to adapt to the relatively humid and complex environments of elevator shafts, thereby extending the service life of the entire device.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A portable elevator wire rope extremely weak magnetic non-destructive flaw detection device, characterized in that: include: Probe (1), magnetic fixing base (2) and gooseneck tube (3); The probe (1) has a strip-shaped detection area in the middle for accommodating the passage of the elevator steel rope row, and a plurality of GMI sensors (101) are arranged in a uniform and symmetrical array on both sides of the detection area. The GMI sensors (101) are used to detect changes in the magnetic field in the detection area; The magnetic fixing seat (2) is used for fixed connection with the metal structure; One end of the gooseneck tube (3) is connected to the probe (1), and the other end is connected to the magnetic fixing base (2).

2. A portable elevator wire rope extremely weak magnetic nondestructive testing device according to claim 1, characterized in that: The probe (1) further comprises a data acquisition module (102) therein, and the data acquisition module (102) is used to collect and store the magnetic field change data collected by each GMI sensor (101).

3. The portable elevator wire rope extremely weak magnetic nondestructive testing device according to claim 1 is characterized in that: The probe (1) further comprises a lithium battery (103) therein, and the lithium battery (103) is used to supply power to each GMI sensor (101) and the data acquisition module (102).

4. A portable elevator wire rope extremely weak magnetic nondestructive testing device according to claim 3, characterized in that: The data acquisition module (102) comprises an analog-to-digital converter and a signal processing chip. The analog-to-digital converter is used to convert the analog signal output by the GMI sensor (101) into a digital signal. The signal processing chip filters and amplifies the digital signal to obtain magnetic field change data capable of characterizing wire rope defects.

5. The portable elevator wire rope extremely weak magnetic nondestructive testing device according to claim 1 is characterized in that: The vertical distance between the GMI sensor (101) and the elevator wire rope row is 5-15 mm.

6. The portable elevator wire rope extremely weak magnetic nondestructive testing device according to claim 1 is characterized in that: The housing of the probe (1) is made of aluminum alloy.

7. The portable elevator wire rope extremely weak magnetic nondestructive testing device according to claim 1 is characterized in that: The non-destructive testing device further comprises a data interface provided on the probe (1), wherein the data interface is a USB interface or a wireless communication module.

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