Detection equipment for braking distance of mining elevator and operation method of detection equipment

Abstract

The invention provides a mining elevator braking distance detection device and an operation method thereof, and belongs to the technical field of mining elevator detection.The mining elevator braking distance detection device comprises a magnetoelectric sensor, a laser distance measuring sensor is arranged on the upper side of the magnetoelectric sensor, and the magnetoelectric sensor is based on the electromagnetic induction principle. The mechanical rotation of the rotating shaft of the elevator traction machine can be accurately converted into an electric signal in real time, and accurate data are provided for acquiring the running speed of an elevator; the laser distance measuring sensor is installed at the top of an elevator car and vertically and downwards aligned with a fixed reflecting plate at the bottom of an elevator shaft, the displacement information of the car can be accurately calculated, key data are provided for calculating the braking distance, the accurate braking distance can be obtained through calculation of an efficient data processing unit in the intelligent display screen, the detection precision is effectively improved, and the safety is improved. And a reliable basis is provided for accurately evaluating the safety performance of the elevator.

Description

Technical Field

[0001] The present invention belongs to the technical field of mine elevator detection, and specifically relates to a detection device for the braking distance of a mine elevator, and also relates to an operation method of a detection device for the braking distance of a mine elevator. Background Art

[0002] At present, when the safety guarantee of mine elevators is of utmost importance, the detection of braking distance is a key link in measuring the performance and safety of elevators. There are many drawbacks in the traditional detection means of the braking distance of mine elevators, which seriously affect the detection effect and the safety management of elevators. Some detections rely on manual measurement. After the mine elevator stops running, the detection personnel need to manually measure the position changes of relevant components to estimate the braking distance. This method is greatly interfered by human factors, such as the accuracy limitation of measurement tools, the operation differences of measurement personnel, and the perspective deviation, etc., resulting in significant measurement errors, making it difficult to accurately obtain the braking distance data, and unable to provide a reliable basis for the safety assessment of elevators. At the same time, the manual measurement process is cumbersome, time-consuming and laborious, the detection efficiency is extremely low, increasing the elevator maintenance cost and outage time, and reducing the overall operation efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a detection device for the braking distance of a mine elevator and its operation method, aiming to solve the problems in the prior art that it is difficult to accurately obtain key data of the elevator, the calculation error of the braking distance is large, the safety performance of the elevator cannot be accurately evaluated, the traditional detection operation is cumbersome, the component coordination is poor, the installation is inconvenient, it consumes a large amount of manpower and time, the detection efficiency is low, affecting the elevator maintenance and operation, and bringing potential safety hazards to users.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A detection device for the braking distance of a mine elevator, comprising: A magnetoelectric sensor, a laser ranging sensor is arranged above the magnetoelectric sensor, one side end of the magnetoelectric sensor is fixedly connected with an intelligent display screen, the laser ranging sensor is installed on the top of the elevator car and vertically downward to aim at a fixed reflector at the bottom of the elevator shaft, and the intelligent display screen is internally provided with a data processing unit, a display and alarm module, and a power supply module; Rectangular grooves, there are two rectangular grooves, and the two rectangular grooves are respectively opened at both ends of the magnetoelectric sensor; Fixing holes, there are four fixing holes, and the four fixing holes are respectively opened on the rear inner walls of the two rectangular grooves; A mounting seat, the mounting seat is arranged at the rear side of the magnetoelectric sensor, and the mounting seat is installed on the rotating shaft of the elevator traction machine; and A connecting mechanism, the connecting mechanism is arranged at the rear side of the magnetoelectric sensor, and the connecting mechanism is used for connecting and fixing the magnetoelectric sensor.

[0005] Furthermore, the above-mentioned connecting mechanism includes: The first clamping blocks, there are four of the first clamping blocks, and the four first clamping blocks are respectively fixedly connected in the four fixing holes; Convex clamping grooves, there are four of the convex clamping grooves, and the four convex clamping grooves are respectively opened at the opposite ends of the four first clamping blocks; Limit grooves, there are four of the limit grooves, and the four limit grooves are respectively opened at both ends of the mounting seat; Springs, there are four of the springs, and one ends of the four springs are respectively fixedly connected to the inner walls close to each other of the four limit grooves; Sliders, there are four of the sliders, and the four sliders are respectively slidably connected in the four limit grooves, and the four sliders are respectively fixedly connected to the other ends of the four springs; Slide bars, there are four of the slide bars, and the four slide bars are respectively fixedly connected to the opposite ends of the four sliders; Clamping plates, there are four of the clamping plates, and the four clamping plates are respectively fixedly connected to the opposite ends of the four slide bars; Second clamping blocks, there are four of the second clamping blocks, and the four second clamping blocks are respectively fixedly connected to the opposite ends of the four clamping plates, and the clamping plates and the second clamping blocks are respectively movably clamped in the four convex clamping grooves.

[0006] Furthermore, a connecting plate is fixedly connected to the outer surface of the above-mentioned laser distance sensor, and four mounting holes are opened at the top end of the connecting plate.

[0007] Furthermore, a wire hole is opened at one side end of the above-mentioned laser distance sensor, and four plastic pads are fixedly connected to the top end of the connecting plate.

[0008] Furthermore, the combination of the four clamping plates and the four second clamping blocks is in a convex shape.

[0009] Furthermore, an anti-slip pad is fixedly connected to the rear end of the above-mentioned magnetoelectric sensor.

[0010] Furthermore, four positioning holes and four threaded holes are respectively opened at the front and rear ends of the above-mentioned mounting seat.

[0011] Compared with the prior art, the beneficial effects of the present invention are: 1. In the solution of this embodiment, by integrating a high-precision magnetoelectric sensor and an advanced laser ranging sensor, the accurate measurement of the rotational speed of the elevator traction machine and the displacement of the car is realized. The magnetoelectric sensor is based on the principle of electromagnetic induction and can accurately and real-time convert the mechanical rotation of the rotating shaft of the elevator traction machine into an electrical signal, providing accurate data for obtaining the elevator running speed. The laser ranging sensor is installed on the top of the elevator car and vertically downward to align with the fixed reflector at the bottom of the elevator shaft, and can accurately calculate the car displacement information, providing key data for calculating the braking distance. Through the operation of the efficient data processing unit in the intelligent display screen, the accurate braking distance can be obtained, effectively improving the detection accuracy and providing a reliable basis for accurately evaluating the elevator safety performance.

[0012] 2. In the solution of this embodiment, all components cooperate closely and are easy to install, changing the traditional cumbersome manual measurement method. During the installation process, the magnetoelectric sensor is tightly connected to the mounting seat through a unique connection mechanism. The design of the positioning holes and threaded holes of the mounting seat ensures its accurate installation on the rotating shaft of the elevator traction machine, improving the installation efficiency and the stability of the sensor operation. The laser ranging sensor can be quickly fixed on the top of the car by using the mounting holes of the connecting plate and is conveniently wired through the wiring holes. The installation and operation process of the entire detection device is optimized, greatly shortening the detection time, improving the detection efficiency, reducing the elevator maintenance cost and outage time, and enhancing the overall operation efficiency.

[0013] 3. In the solution of this embodiment, the design of the connection mechanism ensures that the magnetoelectric sensor does not displace or loosen during the elevator operation. For example, components such as springs, sliders, clamping plates, and convex grooves in the connection mechanism cooperate with each other, providing a firm connection while having certain elasticity and buffering functions, effectively coping with the vibration and impact during the elevator operation, and avoiding component damage caused by rigid connection. The reasonable design and coordinated work of each component enable the device to operate stably in the complex elevator operation environment, extending the service life of the device, further ensuring the continuous and accurate progress of the elevator detection work, and enhancing the safety and reliability of the elevator operation. Description of the Drawings

[0014] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is the perspective view of the embodiment; Figure 2 is the first perspective exploded perspective view of the embodiment; Figure 3 is in the embodiment Figure 2 partial enlarged view of part A; Figure 4 is the first perspective exploded perspective view of the embodiment.

[0015] In the figure: 1. Magnetoelectric sensor; 101. Anti-slip mat; 2. Intelligent display screen; 3. Laser ranging sensor; 4. Connecting plate; 401. Mounting hole; 5. Plastic pad; 6. Wiring hole; 7. Rectangular groove; 8. First clamping block; 801. Convex clamping groove; 9. Mounting seat; 901. Threaded hole; 902. Positioning hole; 10. Limiting groove; 11. Spring; 12. Slide block; 13. Slide rod; 14. Clamping plate; 15. Second clamping block. Specific embodiments

[0016] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] Embodiment 1: Please refer to Figures 1 - 4 , the present invention provides the following technical solutions: A detection device for the braking distance of a mine elevator, comprising: A magnetoelectric sensor 1, a laser ranging sensor 3 is provided on the upper side of the magnetoelectric sensor 1, one side end of the magnetoelectric sensor 1 is fixedly connected to an intelligent display screen 2, the laser ranging sensor 3 is installed on the top of the elevator car and vertically downwardly aligned with a fixed reflector at the bottom of the elevator shaft, and the intelligent display screen 2 is provided with a data processing unit, a display and alarm module, and a power supply module; Rectangular grooves 7, there are two rectangular grooves 7, and the two rectangular grooves 7 are respectively opened at both ends of the magnetoelectric sensor 1; Fixed holes, there are four fixed holes, and the four fixed holes are respectively opened on the rear inner walls of the two rectangular grooves 7; A mounting seat 9, the mounting seat 9 is arranged at the rear side of the magnetoelectric sensor 1, and the mounting seat 9 is installed on the rotating shaft of the elevator traction machine; and A connecting mechanism, the connecting mechanism is arranged at the rear side of the magnetoelectric sensor 1, and the connecting mechanism is used for connecting and fixing the magnetoelectric sensor 1.

[0018] In a specific embodiment of the present invention, the magnetoelectric sensor 1 is based on the principle of electromagnetic induction, converts the mechanical rotation of the rotating shaft of the elevator traction machine into an electrical signal, and accurately measures the rotation speed of the traction machine in real time to provide data for obtaining the running speed of the elevator.

[0019] The laser ranging sensor 3 is installed on the top of the elevator car and vertically downwardly aligned with the fixed reflector at the bottom of the elevator shaft. By measuring the time from the emission of the laser to the reflection back by the reflector, the distance change between the car and the reflector is accurately calculated, and the displacement information of the elevator car is obtained, providing key data for calculating the braking distance.

[0020] The intelligent display screen 2 integrates a data processing unit, a display and alarm module, and a power module internally. The data processing unit receives and processes the data transmitted by the magnetoelectric sensor 1 and the laser ranging sensor 3, and uses an algorithm to calculate the acceleration and braking distance when the elevator brakes. The display and alarm module displays parameters such as the real-time speed, braking acceleration, and braking distance of the elevator on the screen, and emits an audible and visual alarm signal when the braking distance exceeds the safety standard range. The power module provides stable power for the intelligent display screen 2 and each associated functional module.

[0021] Two rectangular grooves 7 are respectively opened at both ends of the magnetoelectric sensor 1, providing an installation position and a positioning reference for the connecting mechanism to ensure the stable operation of the magnetoelectric sensor 1.

[0022] Two fixing holes are respectively opened on the rear inner walls of the two rectangular grooves 7. It can be firmly connected to other components such as the connecting mechanism or the mounting seat 9 through connecting pieces such as bolts and screws, enhancing the connection stability between the magnetoelectric sensor 1 and other components.

[0023] The mounting seat 9 is located at the rear side of the magnetoelectric sensor 1 and is installed on the rotating shaft of the elevator traction machine, fixing the position of the magnetoelectric sensor 1 so that the magnetoelectric sensor 1 can accurately rotate synchronously with the rotating shaft of the elevator traction machine and precisely measure the rotational speed.

[0024] The connecting mechanism is arranged at the rear side of the magnetoelectric sensor 1. By cooperating with the rectangular groove 7 and the fixing hole structure, the magnetoelectric sensor 1 is firmly connected and fixed on the mounting seat 9, ensuring that the magnetoelectric sensor 1 does not displace or loosen during the operation of the elevator, ensuring accurate and stable speed detection. The mounting seat 9 is installed on the rotating shaft of the elevator traction machine, and can accurately measure the rotational speed of the traction machine in real time, thereby obtaining the running speed of the elevator. The laser ranging sensor 3 is installed on the top of the elevator car and vertically aims at the fixed reflector at the bottom of the elevator shaft. The displacement of the car is accurately calculated by measuring the round-trip time of the laser. It should be noted that: The specific models of the magnetoelectric sensor 1, the intelligent display screen 2, and the laser ranging sensor 3 are selected by those skilled in the relevant art, and the above-mentioned magnetoelectric sensor 1, intelligent display screen 2, and laser ranging sensor 3, etc. all belong to the prior art, and this solution will not be elaborated.

[0025] Specifically, please refer to Figures 1 - 4 and the connecting mechanism includes: The first clamping blocks 8, there are four first clamping blocks 8, and the four first clamping blocks 8 are respectively fixedly connected in the four fixing holes; The convex clamping grooves 801, there are four convex clamping grooves 801, and the four convex clamping grooves 801 are respectively opened at the remote ends of the four first clamping blocks 8; Limiting grooves 10, four limiting grooves 10 are provided, and the four limiting grooves 10 are respectively opened at both ends of the mounting seat 9; Spring 11, four springs 11 are provided, one end of the four springs 11 is respectively fixedly connected to the adjacent inner walls of the four limiting grooves 10; Slide blocks 12, four slide blocks 12 are provided, the four slide blocks 12 are slidably connected to the four limit grooves 10 respectively, and the four slide blocks 12 are fixedly connected to the other ends of the four springs 11 respectively; Sliding rods 13, four sliding rods 13 are provided, and the four sliding rods 13 are respectively fixedly connected to the ends away from each other of the four sliding blocks 12; A clamping plate 14, wherein four clamping plates 14 are provided, and the four clamping plates 14 are respectively fixedly connected to the ends away from each other of the four sliding rods 13; The second clamping block 15 is provided with four second clamping blocks 15 , and the four second clamping blocks 15 are respectively fixedly connected to the ends away from each other of the four clamping plates 14 , and the clamping plates 14 and the second clamping blocks 15 are respectively movably clamped in the four convex clamping grooves 801 .

[0026] In this embodiment, when the magnetoelectric sensor 1 is mounted on the rotating shaft of the elevator traction machine, the mounting seat 9 of the magnetoelectric sensor 1 is first aligned with the mounting position of the rotating shaft, and the four first clamping blocks 8 are respectively fixed in the four fixing holes. At this time, the clamping plate 14 and the second clamping block 15 are in an extended state under the elastic force of the spring 11, that is, the spring 11 is at a natural length or close to a natural length.

[0027] Next, push the magnetoelectric sensor 1 so that the four clamping plates 14 and the second clamping block 15 on the mounting seat 9 are aligned with the convex clamping groove 801 on the first clamping block 8 , and continue to push the magnetoelectric sensor 1 , so that the clamping plates 14 and the second clamping block 15 will contact the outer opening of the convex clamping groove 801 .

[0028] As the push continues, the card plate 14 and the second card block 15 will press the spring 11, so that the slider 12 slides in the limit groove 10, and the spring 11 is compressed, providing enough shrinkage space for the card plate 14 and the second card block 15, until the card plate 14 and the second card block 15 completely enter the convex card groove 801. When the card plate 14 and the second card block 15 reach the appropriate position of the convex card groove 801, the elastic force of the spring 11 will pop the card plate 14 and the second card block 15 outward, so that they are firmly clamped in the convex card groove 801, thereby completing the connection between the magnetoelectric sensor 1 and the mounting seat 9.

[0029] When it is necessary to disassemble the magnetoelectric sensor 1, external force is applied to push the card plate 14 and the second card block 15 inward to make them disengage from the convex card slot 801. At this time, the slider 12 will slide in the limit slot 10 and compress the spring 11. When the card plate 14 and the second card block 15 are completely out of the convex card slot 801, the magnetoelectric sensor 1 can be removed from the mounting base 9.

[0030] During the operation of the elevator, due to the elastic force of the spring 11 and the clamping effect of the clamping plate 14 and the second clamping block 15 with the convex clamping groove 801, the magnetoelectric sensor 1 will be firmly fixed on the mounting seat 9, and will not loosen or shift due to vibration, rotation, etc., ensuring that the magnetoelectric sensor 1 can work stably and ensuring the accuracy of speed measurement. At the same time, since the connection mechanism has certain elasticity and buffering function, when subjected to a certain degree of external impact or vibration, it can be buffered by the sliding of the slider 12 in the limit groove 10 and the expansion and contraction of the spring 11, avoiding damage to components caused by rigid connection.

[0031] For details, please refer to Figures 1 - 3 A connecting plate 4 is fixedly connected to the outer surface of the laser distance measuring sensor 3, and four mounting holes 401 are opened at the top end of the connecting plate 4.

[0032] In this embodiment: The connecting plate 4 is fixedly connected to the outer surface of the laser distance measuring sensor 3, and its main function is to provide an extended platform for connecting the laser distance measuring sensor 3. Four mounting holes 401 are opened at the top end of the connecting plate 4. Through these mounting holes 401, the laser distance measuring sensor 3 can be installed at a suitable position on the top of the elevator car using connecting parts such as bolts and screws. For example, a bolt can be passed through the mounting hole 401 and tightened at the corresponding position preset on the top of the car to ensure that the laser distance measuring sensor 3 is firmly fixed on the top of the car and can be vertically aligned downward with the fixed reflector at the bottom of the elevator shaft.

[0033] For details, please refer to Figure 2 A wiring hole 6 is opened at one side end of the laser distance measuring sensor 3, and four plastic pads 5 are fixedly connected to the top end of the connecting plate 4.

[0034] In this embodiment: The plastic pads 5 are fixedly connected to the top end of the connecting plate 4, and their function is to buffer and dampen vibration. After the laser distance measuring sensor 3 is installed, when the elevator vibrates during operation, the plastic pads 5 can absorb part of the vibration energy, reduce the impact of vibration on the laser distance measuring sensor 3, and prevent damage to the internal components of the laser distance measuring sensor 3 or a decrease in measurement accuracy due to excessive vibration.

[0035] The wiring hole 6 opened at one side end of the laser distance measuring sensor 3 is mainly used for leading out and wiring the internal lines of the laser distance measuring sensor 3. When installing the laser distance measuring sensor 3, the signal transmission lines, power lines and other cables inside it are led out through the wiring hole 6, so as to connect the laser distance measuring sensor 3 with components such as the data processing unit in the intelligent display screen 2.

[0036] For details, please refer to Figures 1 - 4 Four clamping plates 14 and four second clamping blocks 15 are combined into a convex shape.

[0037] In this embodiment, when connecting the magnetoelectric sensor 1 and the mounting base 9, the convex-shaped structure formed by the clamping plate 14 and the second clamping block 15 is aligned with the convex-shaped clamping groove 801 on the first clamping block 8. When the clamping plate 14 and the second clamping block 15 are inserted into the convex-shaped clamping groove 801, due to the special structure of the convex shape, with the elastic force of the spring 11, it can prevent the clamping plate 14 and the second clamping block 15 from easily disengaging from the convex-shaped clamping groove 801, thus ensuring the firmness of the connection.

[0038] Specifically, please refer to Figures 1 - 3 , and an anti-slip pad 101 is fixedly connected to the rear end of the magnetoelectric sensor 1.

[0039] In this embodiment, the anti-slip pad 101 is fixedly connected to the rear end of the magnetoelectric sensor 1, and its main function is to increase the friction between the magnetoelectric sensor 1 and the mounting base 9 or other adjacent components. During the operation of the elevator, the rotating shaft of the elevator traction machine will generate vibration and rotation. The anti-slip pad 101 can prevent the magnetoelectric sensor 1 from shifting or rotating due to vibration, ensure that the magnetoelectric sensor 1 maintains a stable installation position on the mounting base 9, and improve the reliability of its work and the accuracy of the measured data.

[0040] Specifically, please refer to Figures 1 - 4 , and four positioning holes 902 and four threaded holes 901 are respectively formed at the front and rear ends of the mounting base 9.

[0041] In this embodiment, four positioning holes 902 and four threaded holes 901 are respectively formed at the front and rear ends of the mounting base 9. The positioning holes 902 can be used to position and pre-install the mounting base 9 when the mounting base 9 is installed on the rotating shaft of the elevator traction machine, ensuring the accurate installation position of the mounting base 9 and the rotating shaft. A positioning pin or other positioning components can be used to pass through the positioning holes 902 to ensure the installation accuracy of the mounting base 9 and avoid eccentricity or angular deviation.

[0042] The threaded holes 901 are mainly used to firmly fix the mounting base 9 on the rotating shaft of the elevator traction machine through bolts. After the mounting base 9 is accurately positioned, the bolts are screwed into the threaded holes 901 and tightened, so that the mounting base 9 is tightly fixed on the rotating shaft, ensuring that after the magnetoelectric sensor 1 is connected to the mounting base 9 through the connection mechanism, it can stably rotate with the rotating shaft, thus ensuring the accuracy of the magnetoelectric sensor 1 in measuring the rotational speed of the traction machine.

[0043] Working principle and usage process of the present invention: First, carry out the installation preparation work. For the magnetoelectric sensor 1, first align the mounting seat 9 with the positioning pins through the positioning holes 902 at its front and rear ends, accurately align with the installation position of the elevator traction machine rotating shaft to achieve preliminary positioning. At the same time, fix the four first clamping blocks 8 in the four fixing holes on the rear inner wall of the rectangular grooves 7 at both ends of the magnetoelectric sensor 1. At this time, the clamping plate 14 and the second clamping block 15 in the connecting mechanism are in the extended state under the action of the spring 11. For the laser distance sensor 3, carefully check whether the four mounting holes 401 at the top of the connecting plate 4 and the line hole 6 on one side are unobstructed, and whether the four plastic pads 5 fixedly connected to the connecting plate 4 are firmly installed.

[0044] Next, install the magnetoelectric sensor 1. Slowly push the magnetoelectric sensor 1 with the mounting seat 9 and the connecting mechanism towards the elevator traction machine rotating shaft. During this process, make the four clamping plates 14 and the second clamping blocks 15 on the mounting seat 9 accurately align with the convex-shaped clamping grooves 801 on the first clamping blocks 8. As it is continuously pushed, after the clamping plates 14 and the second clamping blocks 15 contact the outer opening of the convex-shaped clamping grooves 801, they will compress the spring 11, causing the slider 12 to slide in the limiting groove 10, and the spring 11 is gradually compressed, thereby providing sufficient contraction space for the clamping plates 14 and the second clamping blocks 15 until the clamping plates 14 and the second clamping blocks 15 completely enter the convex-shaped clamping grooves 801. At this time, the elastic force of the spring 11 will pop the clamping plates 14 and the second clamping blocks 15 outwards, firmly clamping them in the convex-shaped clamping grooves 801 to complete the connection between the magnetoelectric sensor 1 and the mounting seat 9. Then, screw in the bolts through the threaded holes 901 on the mounting seat 9 to tightly fix the mounting seat 9 on the elevator traction machine rotating shaft, ensuring that the magnetoelectric sensor 1 can stably rotate with the rotating shaft to achieve accurate measurement of the traction machine speed.

[0045] Then, install the laser distance sensor 3. Use the four mounting holes 401 at the top of the connecting plate 4, pass bolts or screws through the mounting holes 401 and tighten them at the corresponding positions preset on the top of the elevator car to firmly install the laser distance sensor 3 on the top of the car, and ensure that it is vertically downward aligned with the fixed reflector at the bottom of the elevator shaft. During installation, lead out the signal transmission line, power supply line and other cables inside the laser distance sensor 3 through the line hole 6, and connect them to relevant components such as the data processing unit in the intelligent display screen 2 according to the wiring specifications to ensure the stability and reliability of data transmission.

[0046] Finally, it enters the equipment operation and detection stage. When the elevator is running, based on the principle of electromagnetic induction, the magnetoelectric sensor 1 converts the mechanical rotation of the elevator traction machine's rotating shaft into electrical signals in real time, accurately measures the rotational speed of the traction machine, and transmits the data to the data processing unit in the intelligent display screen 2. At the same time, the laser ranging sensor 3 continuously emits laser light towards the fixed reflector at the bottom of the elevator shaft and receives the reflected light. By measuring the round-trip time of the laser, it accurately calculates the distance change between the car and the reflector, obtains the car displacement information, and also transmits it to the data processing unit. After receiving the data from the magnetoelectric sensor 1 and the laser ranging sensor 3, the data processing unit uses the built-in algorithm to calculate the acceleration and braking distance when the elevator brakes, and transmits parameters such as the real-time speed, braking acceleration, and braking distance of the elevator to the display and alarm module. The display and alarm module displays these parameters on the intelligent display screen 2 for the staff to view. Once the braking distance exceeds the pre-set safety standard range, the alarm module immediately emits an audible and visual alarm signal to remind the relevant personnel to check and maintain the elevator in a timely manner to ensure the safe operation of the elevator.

[0047] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A detection device for the braking distance of a mine elevator, characterized in that, Including: A magnetoelectric sensor (1), one side end of the magnetoelectric sensor (1) is fixedly connected to an intelligent display screen (2), a laser ranging sensor (3) is arranged above the magnetoelectric sensor (1), the laser ranging sensor (3) is installed on the top of the elevator car and vertically aligned with a fixed reflector at the bottom of the elevator shaft, and a data processing unit, a display and alarm module, and a power supply module are arranged in the intelligent display screen (2); Rectangular grooves (7), there are two rectangular grooves (7), and the two rectangular grooves (7) are respectively opened at both ends of the magnetoelectric sensor (1); Fixed holes, there are four fixed holes, and the four fixed holes are respectively opened on the rear inner walls of the two rectangular grooves (7); A mounting seat (9), the mounting seat (9) is arranged at the rear side of the magnetoelectric sensor (1), and the mounting seat (9) is installed on the rotating shaft of the elevator traction machine; and A connecting mechanism, the connecting mechanism is arranged at the rear side of the magnetoelectric sensor (1), and the connecting mechanism is used to connect and fix the magnetoelectric sensor (1).

2. The detection device for the braking distance of a mine elevator according to claim 1, characterized in that: The connecting mechanism includes: First clamping blocks (8), there are four first clamping blocks (8), and the four first clamping blocks (8) are respectively fixedly connected in the four fixed holes; Convex clamping grooves (801), there are four convex clamping grooves (801), and the four convex clamping grooves (801) are respectively opened at the opposite ends of the four first clamping blocks (8); Limit grooves (10), there are four limit grooves (10), and the four limit grooves (10) are respectively opened at both ends of the mounting seat (9); Springs (11), there are four springs (11), and one ends of the four springs (11) are respectively fixedly connected to the inner walls close to each other of the four limit grooves (10); Sliders (12), there are four sliders (12), the four sliders (12) are respectively slidably connected in the four limit grooves (10), and the four sliders (12) are respectively fixedly connected to the other ends of the four springs (11); Slide rods (13), there are four slide rods (13), and the four slide rods (13) are respectively fixedly connected to the opposite ends of the four sliders (12); Clamping plates (14), there are four clamping plates (14), and the four clamping plates (14) are respectively fixedly connected to the opposite ends of the four slide rods (13); Second clamping blocks (15), there are four second clamping blocks (15), the four second clamping blocks (15) are respectively fixedly connected to the opposite ends of the four clamping plates (14), and the clamping plates (14) and the second clamping blocks (15) are respectively movably clamped in the four convex clamping grooves (801).

3. The detection device for the braking distance of a mine elevator according to claim 2, characterized in that: A connecting plate (4) is fixedly connected to the outer surface of the laser ranging sensor (3), and four mounting holes (401) are opened at the top end of the connecting plate (4).

4. The detection device for the braking distance of a mine elevator according to claim 3, wherein: A wiring hole (6) is opened at one side end of the laser ranging sensor (3), and four plastic pads (5) are fixedly connected to the top end of the connecting plate (4).

5. The detection device for the braking distance of a mine elevator according to claim 4, characterized in that: The four clamping plates (14) and the four second clamping blocks (15) are combined into a convex shape.

6. The detection device for the braking distance of a mine elevator according to claim 5, characterized in that: An anti-slip pad (101) is fixedly connected to the rear end of the magnetoelectric sensor (1).

7. The detection device for the braking distance of a mine elevator according to claim 6, characterized in that: Four positioning holes (902) and four threaded holes (901) are respectively formed at the front and rear ends of the mounting base (9).

8. The operating method of a detection device for the braking distance of a mine elevator according to claim 1, characterized in that: The method comprises the following steps: First, carry out installation preparation work. For the magnetoelectric sensor, first, the mounting base is accurately aligned with the installation position of the elevator traction machine rotating shaft through the positioning holes at its front and rear ends in cooperation with the positioning pins to achieve preliminary positioning. At the same time, the four first clamping blocks are respectively fixed in the four fixing holes on the inner wall of the rear rectangle grooves at both ends of the magnetoelectric sensor. At this time, the clamping plate and the second clamping block in the connecting mechanism are in the extended state under the action of the spring. For the laser distance measuring sensor, it is necessary to carefully check whether the four mounting holes at the top of the connecting plate and the line holes on one side are unobstructed, and whether the four plastic pads fixedly connected to the connecting plate are firmly installed; Second, install the magnetoelectric sensor. Slowly push the magnetoelectric sensor with the mounting base and the connecting mechanism towards the elevator traction machine rotating shaft. During this process, the four clamping plates and the second clamping block on the mounting base should be accurately aligned with the convex-shaped clamping grooves on the first clamping block. As it is continuously pushed, after the clamping plate and the second clamping block contact the outer opening of the convex-shaped clamping groove, they will compress the spring, causing the slider to slide in the limit groove, and the spring is gradually compressed, thereby providing sufficient contraction space for the clamping plate and the second clamping block until the clamping plate and the second clamping block completely enter the convex-shaped clamping groove. At this time, the elastic force of the spring will eject the clamping plate and the second clamping block outwards, making them firmly clamped in the convex-shaped clamping groove to complete the connection between the magnetoelectric sensor and the mounting base. After that, screw the bolts into the threaded holes on the mounting base to tightly fix the mounting base on the elevator traction machine rotating shaft; Third, install the laser distance measuring sensor. Use the four mounting holes at the top of the connecting plate, pass bolts or screws through the mounting holes and tighten them at the corresponding positions preset on the top of the elevator car to firmly install the laser distance measuring sensor on the top of the car, and ensure that it is vertically downward and aligned with the fixed reflector at the bottom of the elevator shaft. At the same time of installation, lead out the signal transmission line and power supply line inside the laser distance measuring sensor through the line holes and connect them to the intelligent display screen according to the wiring specification; Fourth, enter the equipment operation and detection stage. When the elevator is running, based on the principle of electromagnetic induction, the magnetoelectric sensor converts the mechanical rotation of the elevator traction machine's rotating shaft into electrical signals in real time, accurately measures the rotational speed of the traction machine, and transmits the data to the data processing unit in the intelligent display screen. At the same time, the laser distance sensor continuously emits laser light towards the fixed reflector at the bottom of the elevator shaft and receives the reflected light. By measuring the round-trip time of the laser, it accurately calculates the distance change between the car and the reflector, obtains the car displacement information, and also transmits it to the data processing unit. After receiving the data from the magnetoelectric sensor and the laser distance sensor, the data processing unit calculates the acceleration and braking distance when the elevator brakes, and transmits the real-time speed, braking acceleration, and braking distance of the elevator to the display and alarm module. The display and alarm module displays these parameters on the intelligent display screen for the staff to view. Once the braking distance exceeds the pre-set safety standard range, the alarm module immediately emits an audible and visual alarm signal to remind the relevant personnel to check and maintain the elevator in a timely manner.

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