Elevator traction steel wire rope scrap detection system

Abstract

The utility model discloses an elevator traction steel wire rope scrap detection system, which relates to the technical field of elevator part scrap detection, and comprises a microprocessor, and a permanent magnetic field, a Hall element, a human-computer interaction interface HMI and an auxiliary electromagnet which are connected with the microprocessor, and the permanent magnetic field adopts a tile type design to form a uniform and stable strong magnetic field; the Hall element is arranged in the permanent magnetic field, tracks the change of the magnetic flux density and outputs a proportional voltage signal; the microprocessor is used for judging whether the voltage signal of the Hall element reaches a preset threshold value or not; the microprocessor is also used for adjusting the magnetic field intensity of the permanent magnetic field; the human-computer interaction interface HMI is used for a user to set parameters and check a state; the auxiliary electromagnet surrounds the outer side of the permanent magnetic field to adjust the magnetic field intensity of the permanent magnetic field. The detection efficiency and accuracy are improved in an automatic detection mode, the scrap state of the steel wire rope can be judged in time, and elevator safety accidents caused by damage of the steel wire rope are effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator component scrap detection, and more specifically, to an elevator traction steel wire rope scrap detection system. Background Technique

[0002] The traction steel wire rope is a key component in the elevator system. It bears the weight of the elevator car and counterweight, and realizes the up and down operation of the elevator through the drive of the traction wheel. However, during the long-term operation process, the traction steel wire rope will be affected by various factors such as wear, corrosion, and broken wires, resulting in a gradual decline in its performance and even triggering safety accidents. Therefore, regular inspection and maintenance of the traction steel wire rope to ensure its good working condition is an important measure to ensure the safe operation of the elevator.

[0003] Currently, the detection of elevator traction steel wire ropes mainly adopts manual visual inspection and traditional non-destructive testing techniques. Although these methods can detect external defects of the steel wire rope to a certain extent, they have the following limitations:

[0004] Low detection efficiency: Manual visual inspection requires a large amount of manpower and time, and is prone to missed detection or misjudgment.

[0005] Low detection accuracy: Traditional non-destructive testing techniques such as magnetic particle flaw detection and ultrasonic flaw detection can detect internal defects of the steel wire rope, but the detection accuracy is affected by various factors such as the experience of the detection personnel and the accuracy of the equipment.

[0006] Poor real-time performance: Most of the existing detection techniques can only be carried out when the elevator is in a stopped state, and cannot monitor the running state of the steel wire rope in real time.

[0007] In view of the limitations of the above technologies, how to efficiently and accurately detect elevator traction steel wire ropes and determine whether they reach the scrap standard is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0008] In view of this, the utility model provides an elevator traction steel wire rope scrap detection system, which is convenient for detecting the scrap state of the steel wire rope.

[0009] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0010] An elevator traction steel wire rope scrap detection system includes a microprocessor, a permanent magnetic field, a Hall element, and a human-machine interface HMI that are respectively connected to the microprocessor;

[0011] The permanent magnetic field adopts a tile design to form a uniform and stable strong magnetic field. When the traction steel wire rope is running in the elevator, it will pass through the magnetic field area formed by the permanent magnetic field;

[0012] The Hall element is placed in the permanent magnetic field, tracks the change in magnetic flux density, and outputs a proportional voltage signal;

[0013] The microprocessor is configured to receive the voltage signal output by the Hall element, determine whether the voltage signal reaches a preset threshold, and transmit the result to the human-machine interface HMI for display; the microprocessor is also configured to send a control signal to adjust the magnetic field strength of the permanent magnetic field;

[0014] The human-machine interface HMI includes a display screen for users to set parameters and view status;

[0015] The system further includes an auxiliary electromagnet that surrounds the outside of the permanent magnetic field and is used to adjust the magnetic field strength of the permanent magnetic field according to the control signal of the microprocessor.

[0016] Optionally, a digital-to-analog converter DAC is provided between the permanent magnetic field and the microprocessor to convert the digital signal generated by the microprocessor into an analog signal to control the magnetic field strength;

[0017] An analog-to-digital converter ADC is provided between the Hall element and the microprocessor to convert the analog signal output by the Hall element into a digital signal for processing by the microprocessor.

[0018] Optionally, the permanent magnetic field is made of a third-generation rare-earth permanent magnet material, namely neodymium iron boron.

[0019] Optionally, a copper sleeve is further provided outside the permanent magnetic field and the Hall element. The copper sleeve is of a tubular structure with an inner diameter larger than the combined size of the permanent magnetic field and the Hall element. The two ends of the copper sleeve are closed and provided with perforations for the traction steel wire rope to pass through; the auxiliary electromagnet surrounds the outside of the sleeve.

[0020] Optionally, the auxiliary electromagnet is designed as multiple individual coils, and each coil is independently controlled.

[0021] Optionally, the human-machine interface HMI includes at least a display screen, an input device, and a communication interface. The display screen is used to display various information and prompts; the input device is a button or a knob for users to set parameters and input commands; the communication interface is used to communicate with the microprocessor to obtain detection data and send control instructions.

[0022] Optionally, an alarm device is further included. The alarm device is connected to the microprocessor. When the microprocessor determines that the voltage signal reaches the preset threshold, it sends an alarm signal to the alarm device for audible and visual alarms.

[0023] Optionally, a power management module is further included, including a power converter and a voltage stabilizing circuit, for supplying power to the system.

[0024] As can be seen from the above technical solutions, the present utility model provides a waste detection system for elevator traction steel ropes. Compared with the prior art, it has the following beneficial effects:

[0025] (1) High-precision detection: By using Hall elements to track the change of magnetic flux density and output a proportional voltage signal, combined with the accurate judgment of the microprocessor, high-precision detection of the wear or broken wire status of the traction steel rope can be achieved. This non-contact detection method not only improves the accuracy of waste detection but also avoids secondary damage that may be caused by traditional methods.

[0026] (2) Flexible adjustment of magnetic field strength: The system is designed with an auxiliary electromagnet that can flexibly adjust the magnetic field strength of the permanent magnetic field according to the control signal of the microprocessor. This design enables the system to adapt to traction steel ropes of different specifications and different wear degrees, improving the versatility and flexibility of the system.

[0027] (3) Safe and reliable: An alarm device is configured. When the abnormal status of the traction steel rope is detected, it can give an audible and visual alarm in time to remind relevant personnel to handle it. This active alarm mechanism effectively reduces the risk of safety accidents and improves the safety of elevator operation.

[0028] (4) Protection design: There is a copper sleeve outside the permanent magnetic field and the Hall element, which not only protects these key components from the external environment but also ensures the smooth passage of the traction steel rope through the closed design and perforation design. This design not only protects the internal components of the system but also avoids the aggravation of the wear of the traction steel rope.

[0029] In summary, the waste detection system for elevator traction steel ropes provided by the present utility model has the advantages of high precision, flexibility, safety, and stability. Through the automated detection method, the detection efficiency and accuracy are greatly improved, the waste status of the steel rope can be detected and warned in time, and the elevator safety accidents caused by the damage of the steel rope can be effectively prevented. Brief Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0031] Figure 1 It is a schematic structural diagram of the system of the present utility model. Detailed Embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] An embodiment of the present invention discloses an elevator traction steel wire rope scrapping detection system. Refer to Figure 1 , which includes a microprocessor, a permanent magnetic field, a Hall element, and a human-machine interface HMI that are respectively connected to the microprocessor.

[0034] The permanent magnetic field adopts a tile design to form a uniform and stable strong magnetic field, which helps to reduce the non-uniformity in the magnetic field and improve the accuracy of detection. The permanent magnetic field is made of the third-generation rare-earth permanent magnet material - neodymium iron boron. Neodymium iron boron has extremely high magnetic energy product and coercivity, and can generate a strong magnetic field to meet the requirements of traction steel wire rope detection. When the elevator traction steel wire rope is running, it will pass through the magnetic field area formed by the permanent magnetic field, and its magnetic characteristics (such as magnetic flux density) will change with the state of the steel wire rope (such as wear, broken wires, etc.).

[0035] The Hall element is placed in the permanent magnetic field, adjacent to the passing path of the traction steel wire rope, tracks the change of the magnetic flux density, and converts this change into a proportional voltage signal for output. The change of the voltage signal reflects the change of the state of the traction steel wire rope.

[0036] The microprocessor is used to receive the voltage signal output by the Hall element, judge whether the voltage signal reaches a preset threshold. The preset threshold can be set according to safety standards such as the wear degree and the number of broken wires of the traction steel wire rope. When the elevator traction steel wire rope has situations such as broken wires, rust, deformation, or damage, it is regarded as reaching the scrapping technical conditions. The result is transmitted to the human-machine interface HMI for display, including information such as the real-time state of the steel wire rope and whether it is close to scrapping. The microprocessor is also used to send a control signal to adjust the magnetic field intensity of the permanent magnetic field, and can adapt to the detection requirements of traction steel wire ropes of different specifications or wear degrees.

[0037] The human-machine interface HMI at least includes a display screen, an input device, and a communication interface. The display screen is used to display various information and prompts, such as the real-time state of the traction steel wire rope, etc.; the input device is a button or a knob for the user to perform parameter setting and instruction input; the communication interface is used to communicate with the microprocessor to obtain detection data and send control instructions.

[0038] The system further includes an auxiliary electromagnet, which is arranged around the outside of the permanent magnetic field and is designed as a plurality of separate coils, each coil being independently controlled. The auxiliary electromagnet adjusts the magnetic field strength of the permanent magnetic field according to the control signal of the microprocessor, enabling the system to more flexibly respond to different detection requirements and improving the accuracy and reliability of detection.

[0039] A digital-to-analog converter (DAC) is arranged between the permanent magnetic field and the microprocessor for converting the digital signal generated by the microprocessor into an analog signal to control the magnetic field strength; an analog-to-digital converter (ADC) is arranged between the Hall element and the microprocessor for converting the analog signal output by the Hall element into a digital signal for the microprocessor to process.

[0040] In this embodiment, in order to ensure the stability and safety of the permanent magnetic field and the Hall element and protect them from the influence of the external environment, especially the vibration and wear that may occur when the traction steel wire rope passes at high speed, a key component, the copper sleeve, is added to the system design. The copper sleeve is of a tubular structure, and its inner diameter is larger than the combined size of the permanent magnetic field and the Hall element, providing a safe physical barrier for devices such as the permanent magnetic field and the Hall element, preventing the traction steel wire rope from directly contacting the precision sensor elements, thereby avoiding potential physical damage and interference. And copper is a good conductive material, so the copper sleeve also has a certain electromagnetic shielding effect, which can reduce the interference of external electromagnetic fields on the permanent magnetic field and the Hall element and ensure the accuracy and stability of the detection signal.

[0041] Both ends of the copper sleeve are designed to be closed and are provided with perforations for the traction steel wire rope to pass through, which helps prevent impurities such as dust and moisture from entering the inside of the copper sleeve, thereby protecting the permanent magnetic field and the Hall element from pollution and corrosion. At the same time, the closed design can also improve the sealing performance of the entire system and reduce the influence on the detection accuracy due to changes in the external environment. The auxiliary electromagnet is arranged around the outside of the sleeve, enabling the auxiliary electromagnet to more directly affect the magnetic field strength of the permanent magnetic field, thereby achieving more precise magnetic field regulation. At the same time, due to the protection of the copper sleeve, the auxiliary electromagnet is also protected from the direct impact and wear of the traction steel wire rope, thereby improving its working stability and service life.

[0042] Optionally, an alarm device is further included. The alarm device is connected to the microprocessor. When the microprocessor determines that the voltage signal output by the Hall element reaches a preset threshold, it sends an alarm signal to the alarm device for audible and visual alarms. After receiving the alarm signal sent by the microprocessor, the alarm device will immediately activate the audible and visual alarm function. The audible alarm uses a high-decibel beeping sound or a siren sound to attract the attention of surrounding personnel, and the visual alarm indicates the alarm status through a flashing light (such as a red LED light). The combined use of audible and visual alarms can more effectively convey the alarm information and ensure that relevant personnel can respond quickly.

[0043] The installation location of the alarm device should be selected according to the actual situation to ensure that it can effectively convey the alarm information. Generally, the alarm device should be installed in locations such as the elevator machine room, control room, or elevator car that are easily noticed by relevant personnel. The addition of the alarm device enables the system to issue a warning in a timely manner when the traction steel wire rope is approaching the end-of-life state, thus avoiding potential safety accidents.

[0044] In the specific implementation process, the system further includes a power management module, including a power converter and a voltage stabilizing circuit, which are used to supply power to the system. These two parts work together to ensure that the system can operate normally under various working conditions. The main function of the power converter is to convert the externally input power (such as mains AC 220V) into the voltage and current required inside the system. In the elevator traction steel wire rope end-of-life detection system, since there are multiple electronic components and sensors involved, power supplies with different voltage and current levels are required. The power converter can convert the external power into a suitable voltage and current according to the actual needs of the system to meet the working requirements of each component. The voltage stabilizing circuit is responsible for further stabilizing the converted voltage after the power converter. Due to factors such as power grid voltage fluctuations and load changes, the voltage inside the system may become unstable. The voltage stabilizing circuit uses voltage stabilizing techniques such as linear voltage stabilization and switching voltage stabilization to control the voltage fluctuation within a certain range to ensure that each component inside the system can work under a stable voltage.

[0045] The power management module provides a stable power supply for the system, ensuring that each component can work normally and avoiding system failures caused by voltage fluctuations. Stable voltage and current help reduce the loss and aging of electronic components, thereby extending the service life of the system. In key equipment such as elevators, the stability and reliability of the power management module are directly related to the safe operation of the equipment.

[0046] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0047] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An elevator traction steel wire rope scrapping detection system, characterized in that, It includes a microprocessor, a permanent magnetic field, a Hall element, and a human-machine interface HMI that are respectively connected to the microprocessor; The permanent magnetic field adopts a tile design to form a uniform and stable strong magnetic field. When the traction steel wire rope operates in the elevator, it will pass through the magnetic field area formed by the permanent magnetic field; The Hall element is placed in the permanent magnetic field, tracks the change of magnetic flux density, and outputs a proportional voltage signal; The microprocessor is used to receive the voltage signal output by the Hall element, judge whether the voltage signal reaches a preset threshold, and transmit the result to the human-machine interface HMI for display; the microprocessor is also used to send a control signal to adjust the magnetic field strength of the permanent magnetic field; The human-machine interface HMI includes a display screen for users to set parameters and view status; The system also includes an auxiliary electromagnet that surrounds the outside of the permanent magnetic field and is used to adjust the magnetic field strength of the permanent magnetic field according to the control signal of the microprocessor.

2. The scrapping detection system for an elevator traction steel wire rope according to claim 1, wherein A digital-to-analog converter DAC is provided between the permanent magnetic field and the microprocessor, which is used to convert the digital signal generated by the microprocessor into an analog signal to control the magnetic field strength; An analog-to-digital converter ADC is provided between the Hall element and the microprocessor, which is used to convert the analog signal output by the Hall element into a digital signal for the microprocessor to process.

3. The elevator traction steel wire rope scrapping detection system according to claim 1, characterized in that, The permanent magnetic field is made of a third-generation rare earth permanent magnet material, namely neodymium iron boron.

4. The scrapping detection system for elevator traction steel ropes according to claim 1, characterized in that, A copper sleeve is also provided outside the permanent magnetic field and the Hall element. The copper sleeve is of a tubular structure, the inner diameter of which is larger than the combined size of the permanent magnetic field and the Hall element. The two ends of the copper sleeve are closed and provided with perforations for the traction steel wire rope to pass through; the auxiliary electromagnet surrounds the outside of the sleeve.

5. A waste detection system for an elevator traction steel wire rope according to claim 1, characterized in that, The auxiliary electromagnet is designed as a plurality of separate coils, and each coil is independently controlled.

6. The waste detection system for elevator traction steel ropes according to claim 1, wherein, The human-machine interface HMI at least includes a display screen, an input device, and a communication interface. The display screen is used to display various information and prompts; the input device is a button or a knob for users to set parameters and input instructions; the communication interface is used to communicate with the microprocessor to obtain detection data and send control instructions.

7. The scrapping detection system for elevator traction steel ropes according to claim 1, characterized in that, It also includes an alarm device. The alarm device is connected to the microprocessor. When the microprocessor judges that the voltage signal reaches the preset threshold, it sends an alarm signal to the alarm device for audible and visual alarms.

8. A scrapping detection system for an elevator traction steel wire rope according to claim 1, characterized in that, It also includes a power management module, including a power converter and a voltage stabilizing circuit, which are used to supply power to the system.

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