Traction elevator braking capacity detection and early warning device
By installing operation detection components and weigh detection components in the elevator, collecting and correcting the deceleration and weight data of the elevator, the problem of inaccurate braking capacity assessment in the prior art is solved, and the accurate evaluation and early warning of the elevator braking capacity is achieved.
Patent Information
- Application Number
- CN202421932409.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The existing elevator braking distance detection methods ignore the weight and influence of the elevator car on the weight, resulting in inaccurate braking capacity assessment.
The operation detection component and the weigh detection component are used to collect the average deceleration data and weight data of the elevator respectively, and correct it through the operation warning component to obtain the corrected maximum elevator braking distance to evaluate the braking capability.
Accurate assessment and timely warning of elevator braking capabilities have been achieved, reducing safety hazards.
Smart Images
Figure CN223133837U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of elevator detection, in particular to a braking capacity detection and early warning device for a traction elevator. Background Art
[0002] With the continuous acceleration of urbanization and the continuous improvement of people's living standards, the penetration rate of elevators is also increasing year by year. By the end of 2023, my country's elevator stock will exceed 10 million units, and it will maintain a relatively high annual growth rate. At the same time, the number of elevators that have been in use for more than 10 years is also increasing year by year. These elevators have become "old elevators" with high safety hazards and high security pressure.
[0003] The normal operation of the elevator braking system is an important part of ensuring the safe operation of the elevator. Its braking principle is: when the elevator is in a stopped state, the brake coil loses power, and the brake brake rebounds to the traction wheel under the action of the spring, holding the traction wheel so that the traction wheel will not rotate; when the elevator is about to start, the brake coil is energized, and the brake brake is separated from the traction wheel under the action of the magnetic force of the brake coil, so that the elevator traction machine can rotate; among them, problems such as insufficient brake torque, jamming of the brake mechanism, electrical adhesion of the control system and small balance coefficient will cause the brake safety function of the elevator braking system to fail, leading to safety accidents such as "open door and elevator", car falling and car hitting the top, causing casualties; in order to reduce the occurrence of safety accidents, it is necessary to test the braking capacity of the elevator. However, the traditional elevator braking capacity detection method has the disadvantages of high manpower and material costs, low efficiency, inability to measure qualitatively and quantitatively, and inability to perform analysis and evaluation.
[0004] To solve the above technical problems, the technical solution disclosed in the Chinese invention patent with patent application number CN201910231195.3 is a method for detecting the braking distance of an elevator, comprising the following steps: (1) installing a data acquisition module on the top of an elevator car; (2) connecting a data processing module to the data acquisition module, and the data processing module preprocesses the raw data collected by the data acquisition module; (3) transmitting the preprocessed data to a server through a data transmission module to measure the braking distance of the elevator, wherein the data acquisition module is a three-axis acceleration sensor, the data processing module is an ARM microprocessor, and the data transmission module can select a wireless data transmission module and a wired data transmission module.
[0005] However, the above-mentioned prior art has the following technical problems: in the above-mentioned elevator braking distance detection method, only the elevator deceleration data is collected, while the influence of the elevator car weight and the elevator counterweight weight on the maximum value of the elevator braking distance is ignored, so that the obtained elevator braking distance is inaccurate, resulting in inaccurate evaluation results of the elevator braking capacity. Summary of the Utility Model
[0006] In view of this, it is necessary to provide a detection and warning device for the braking ability of a traction elevator, which can collect the weight data of the elevator car and the weight data of the elevator counterweight, so as to correct the braking distance of the elevator according to the weight data of the elevator car and the weight data of the elevator counterweight, so as to obtain the maximum value of the corrected elevator braking distance, and thus accurately evaluate the braking ability of the elevator.
[0007] The utility model provides a detection and warning device for the braking ability of a traction elevator, which includes an operation detection component, a weighing detection component and an operation warning component. The operation warning component is respectively communicatively connected with the operation detection component and the weighing detection component; The operation detection component is installed on the top of the elevator car to collect the average deceleration data and running speed data of the elevator, and upload these data to the operation warning component; The weighing detection component is used to be installed on the steel wire rope of the elevator car or the steel wire rope of the elevator counterweight to collect the weight data of the elevator car and the weight data of the elevator counterweight, and upload these data to the operation warning component; The operation warning component is used to analyze whether there is an abnormality in the current braking ability of the elevator according to the data uploaded by the operation detection component and the weighing detection component, and issue a warning when it is analyzed that there is an abnormality in the current braking ability of the elevator.
[0008] Preferably, the operation detection component includes a first structural housing, an acceleration sensor, a first data processing module, a first data transmission module and a first power management module. The bottom surface of the first structural housing is provided with a magnetic structure to install the first structural housing on the top of the elevator car through the magnetic structure. The acceleration sensor, the first data processing module, the first power management module and the first data transmission module are all installed in the first structural housing. The acceleration sensor and the first data processing module are electrically connected, the first data processing module and the first data transmission module are electrically connected, the first data transmission module and the operation warning component are communicatively connected, and the first power management module is electrically connected to the acceleration sensor, the first data processing module and the first data transmission module;
[0009] The acceleration sensor is used to collect the original deceleration data and the original running speed data of the elevator car, and transmit these data to the first data processing module. The first data processing module is used to process the original deceleration data and the original running speed data of the elevator car, and transmit the processed data to the first data transmission module. The first data transmission module is used to upload the received data to the operation warning component. The first power management module is used to supply power to the acceleration sensor, the first data processing module and the first data transmission module.
[0010] Preferably, the weighing and detecting assembly includes a wire rope tension sensor, a second data processing module, a second data transmission module and a second power management module. The second data processing module is electrically connected to the wire rope tension sensor and the second data transmission module respectively. The second data transmission module is communicatively connected to the operation and warning assembly. The second power management module is electrically connected to the wire rope tension sensor, the second data processing module and the second data transmission module;
[0011] The wire rope tension sensor is used to be installed on the wire rope of the elevator car or the wire rope of the elevator counterweight to respectively collect the original tension data of the car wire rope and the original tension data of the elevator counterweight wire rope, and transmit these data to the second data processing module. The second data processing module is used to respectively obtain the elevator car weight data and the elevator counterweight weight data according to the original tension data of the car wire rope and the original tension data of the elevator counterweight wire rope, and transmit these data to the second data transmission module. The second data transmission module is used to upload these data to the operation and warning assembly. The second power management module is used to supply power to the wire rope tension sensor, the second data processing module and the second data transmission module.
[0012] Preferably, the operation and warning assembly includes a second structural housing, a data receiving module, a data operation module, a short message warning module, a sound warning module and a third power management module. The data receiving module, the data operation module, the short message warning module, the sound warning module and the third power management module are all installed in the second structural housing. The data receiving module is communicatively connected to the first data transmission module and the second data transmission module respectively. The data operation module is electrically connected to the data receiving module, the short message warning module and the sound warning module respectively. The third power management module is electrically connected to the data receiving module, the data operation module, the short message warning module and the sound warning module;
[0013] The data receiving module is used to receive the data uploaded from the first data transmission module and the second data transmission module, and transmit these data to the data operation module. The data operation module is used to evaluate the elevator braking ability according to the received data. The short message warning module is used to send a warning short message to the emergency contact when the elevator braking ability is insufficient. The sound warning module is used to emit a sound warning signal when the elevator braking ability is insufficient. The third power management module is used to supply power to the data receiving module, the data operation module and the sound warning module.
[0014] Preferably, a magnetic structure is provided at the bottom of the second structural housing for installing the second structural housing on the top of the elevator car. The data receiving module is electrically connected to the first data transmission module.
[0015] Preferably, a magnetic structure is provided at the bottom of the second structural housing for installing the second structural housing in an elevator shaft, and the data receiving module is wirelessly connected to the first data transmission module.
[0016] Preferably, the operation and warning component is an electronic device having functions such as data reception, data storage, data calculation, and electronic display.
[0017] In the above traction elevator braking ability detection and warning device, an operation detection component, a weighing detection component, and an operation and warning component are provided. The operation and warning component is respectively communicatively connected to the operation detection component and the weighing detection component. The operation detection component is installed on the top of the elevator car, and the weighing detection component is used to be installed on the steel wire rope of the elevator car or the steel wire rope of the elevator counterweight; thus, the average deceleration data and running speed data of the elevator are collected by the operation detection component and uploaded to the operation and warning component; the elevator car weight data and elevator counterweight weight data are collected by the weighing detection component and uploaded to the operation and warning component. The operation and warning component calculates the maximum corrected elevator braking distance based on the uploaded data, and evaluates the elevator braking ability according to the maximum corrected elevator braking distance, so as to issue a warning signal when the elevator braking ability does not meet the requirements. Description of the Drawings
[0018] Figure 1 is an oblique overhead view of the traction elevator braking ability detection and warning device of the present application.
[0019] Figure 2 is of the present application Figure 1 partial enlarged view of area A therein.
[0020] Figure 3 is an oblique overhead view of the weighing detection component of the present application.
[0021] Figure 4 is a connection diagram of each component in the traction elevator braking ability detection and warning device of the present application.
[0022] Figure 5 is a connection diagram of each module in the operation detection component of the present application.
[0023] Figure 6 is a connection diagram of each module in the weighing detection component of the present application.
[0024] Figure 7 is a connection diagram of each module in Embodiment 1 of the present application.
[0025] In the figure: traction elevator braking ability detection and warning device 10, operation detection component 20, weighing detection component 30, wire rope tension sensor 31, second data processing module 32, operation and warning component 40. Specific embodiments
[0026] The technical solutions and technical effects of the embodiments of the present invention will be further elaborated in detail below in conjunction with the drawings of the present invention.
[0027] Please refer to Figure 1 、 Figure 2 and Figure 4 The present invention provides a traction elevator braking ability detection and warning device 10, including an operation detection component 20, a weighing detection component 30, and an operation warning component 40. The operation warning component 40 is respectively communicatively connected to the operation detection component 20 and the weighing detection component 30; the operation detection component 20 is installed on the top of the elevator car to collect the average deceleration data and running speed data of the elevator, and upload these data to the operation warning component 40; the weighing detection component 30 is used to be installed on the steel wire rope of the elevator car or the steel wire rope of the elevator counterweight to collect the elevator car weight data and elevator counterweight weight data, and upload these data to the operation warning component 40; the operation warning component 40 is used to analyze whether there is an abnormality in the current braking ability of the elevator according to the data uploaded by the operation detection component and the weighing detection component, and issue a warning when it is analyzed that there is an abnormality in the current braking ability of the elevator. Specifically, first obtain the maximum elevator braking distance according to the average deceleration data and running speed data of the elevator collected by the operation detection component, and then correct the maximum elevator braking distance according to the elevator car weight data and elevator counterweight weight data collected by the weighing detection component, and finally obtain the corrected maximum elevator braking distance, so as to accurately evaluate the braking ability of the elevator according to the corrected maximum elevator braking distance.
[0028] Please refer to Figure 5 Furthermore, the operation detection component 20 includes a first structural housing, an acceleration sensor, a first data processing module, a first data transmission module, and a first power management module. The bottom surface of the first structural housing is provided with a magnetic structure to install the first structural housing on the top of the elevator car through the magnetic structure. The acceleration sensor, the first data processing module, the first power management module, and the first data transmission module are all installed in the first structural housing. The acceleration sensor and the first data processing module are electrically connected, the first data processing module and the first data transmission module are electrically connected, the first data transmission module and the operation warning component 40 are communicatively connected, and the first power management module is electrically connected to the acceleration sensor, the first data processing module, and the first data transmission module;
[0029] The acceleration sensor is used to collect the original deceleration data and the original elevator running speed data of the elevator car, and transmit these data to the first data processing module. The first data processing module is used to process the original deceleration data and the original elevator running speed data of the elevator car, and transmit the processed data to the first data transmission module. The first data transmission module is used to upload the received data to the operation and warning component 40. The first power management module is used to supply power to the acceleration sensor, the first data processing module and the first data transmission module.
[0030] In this embodiment, the acceleration sensor is a triaxial acceleration sensor.
[0031] Please refer to Figure 2 、 Figure 3 and Figure 6 Furthermore, the weighing detection component 30 includes a wire rope tension sensor 31, a second data processing module 32, a second data transmission module and a second power management module. The second data processing module 32 is electrically connected to the wire rope tension sensor 31 and the second data transmission module respectively. The second data transmission module 32 is communicatively connected to the operation and warning component. The second power management module is electrically connected to the wire rope tension sensor 31, the second data processing module 32 and the second data transmission module.
[0032] The wire rope tension sensor 31 is used to be installed on the wire rope of the elevator car or the wire rope of the elevator counterweight to collect the original tension data of the car wire rope and the original tension data of the elevator counterweight wire rope respectively, and transmit these data to the second data processing module 32. The second data processing module 32 is used to obtain the elevator car weight data and the elevator counterweight weight data respectively according to the original tension data of the car wire rope and the original tension data of the elevator counterweight wire rope, and transmit these data to the second data transmission module. The second data transmission module is used to upload these data to the operation and warning component 40. The second power management module is used to supply power to the wire rope tension sensor 31, the second data processing module 32 and the second data transmission module.
[0033] In one embodiment, the second data transmission module is an electronic device with wireless data transmission function, for example, a wireless data transceiver.
[0034] In one embodiment, the second data transmission module is an electronic display screen installed on the second data processing module to display the elevator car weight data and the elevator counterweight weight data on the electronic display screen. The operator records the elevator car weight data and the elevator counterweight weight data through the electronic display screen and then manually inputs them into the operation and warning component 40.
[0035] In this embodiment, the steps for the weighing detection component 30 to collect the car weight and the elevator counterweight are as follows:
[0036] 1. The wire rope tension sensor 31 is used to clamp multiple wire ropes on one side of the counterweight sheave at the top of the elevator car simultaneously to collect the tension of the wire ropes on one side of the counterweight sheave at the top of the elevator car.
[0037] 2. The second data processing module 32 processes the original data of the tension of the wire ropes on one side of the counterweight sheave at the top of the elevator car, obtains the car weight data through a preset formula, and transmits this data to the second data transmission module.
[0038] 3. The wire rope tension sensor 31 is used to clamp multiple wire ropes on one side of the counterweight sheave of the elevator counterweight simultaneously to collect the wire rope tension on one side of the counterweight sheave of the elevator counterweight.
[0039] 4. The second data processing module 32 processes the original data of the tension of the wire ropes on one side of the counterweight sheave at the top of the elevator counterweight, obtains the elevator counterweight weight data through a preset formula, and transmits this data to the second data transmission module.
[0040] 5. The staff removes the wire rope tension sensor 31 to complete the collection of the car weight data and the elevator counterweight weight data.
[0041] For the application of the operation and warning component 40 during the daily operation of the elevator in Embodiment 1, please refer to Figure 7 , during the daily operation of the traction elevator, the operation and warning component 40 includes a second structural housing, a data receiving module, a data operation module, a short message warning module, a sound warning module, and a third power management module. The data receiving module, the data operation module, the short message warning module, the sound warning module, and the third power management module are all installed in the second structural housing. The data receiving module is respectively communicatively connected to the first data transmission module and the second data transmission module. The data operation module is respectively electrically connected to the data receiving module, the short message warning module, and the sound warning module. The third power management module is electrically connected to the second data transmission module, the data input component, the data operation module, the short message warning module, and the sound warning module.
[0042] The data receiving module is used to receive the data uploaded from the first data transmission module and the second data transmission module, and transmit these data to the data operation module. The data operation module is used to evaluate the braking ability of the elevator according to the received data. The short message warning module does not start when the evaluation result of the elevator braking ability is normal, and sends a warning short message to the emergency contact when the evaluation result of the elevator braking ability is abnormal to remind the elevator management personnel that there is a fault in the elevator braking system. The sound warning module does not start when the evaluation result of the elevator braking ability is normal, and issues a sound warning signal when the evaluation result of the elevator braking ability is abnormal to remind passengers or staff that there is a fault in the elevator braking system. The third power management module is used to supply power to the data receiving module, the data operation module, and the sound warning module.
[0043] In one embodiment, a magnetic structure is provided at the bottom of the second structural housing for mounting the second structural housing to the top of the elevator car. The data receiving module and the first data transmission module are electrically connected, so that the operation warning component 40 emits an audible warning signal at the top of the car to remind passengers that there is a fault in the elevator braking system.
[0044] In one embodiment, a magnetic structure is provided at the bottom of the second structural housing for mounting the second structural housing in the elevator shaft. The data receiving module and the first data transmission module are wirelessly connected, so that the operation warning component 40 emits an audible warning signal in the elevator shaft to remind elevator staff that there is a fault in the elevator braking system.
[0045] Example 2, Application of the operation warning component 40 during the inspection, repair and maintenance of traction elevators. When inspecting, repairing and maintaining traction elevators, the operation warning component is an electronic device with functions such as data reception, data storage, data calculation and electronic display. For example, a tablet computer is used to obtain the maximum corrected elevator braking distance through the operation warning component when the staff is inspecting the elevator, so as to evaluate the braking ability of the elevator and determine whether to perform inspection, repair and maintenance operations on the elevator.
[0046] Example 3, The specific process of the operation warning component calculating the maximum corrected elevator braking distance and evaluating the elevator braking ability is as follows:
[0047] 1. The first data processing module processes the original deceleration data of the elevator car obtained by the acceleration sensor and the original elevator running speed data, filters out the data collected when the elevator car is decelerating to the flat floor during the upward movement, retains the data collected during the power-off braking during the upward movement of the elevator car, and calculates the retained data to obtain the average deceleration a and running speed V of the elevator car;
[0048] 2. Calculate the upward braking distance L of the car through Formula 1;
[0049] L = V 2 / 2a + Vt Formula 1
[0050] Where, t is a constant of 0.2s;
[0051] 3. The wire rope tension sensor 31 respectively collects the wire rope tension F on the side of the counterweight sheave of the elevator car and the wire rope tension F' on the side of the counterweight sheave of the elevator counterweight;
[0052] 4. The second data processing module 32 respectively substitutes F and F' into Formulas 2 and 3 to calculate the weight P of the elevator car and the weight W of the elevator counterweight;
[0053] P = 2 * F Formula 2
[0054] W = 2 * F’, Formula 3
[0055] 4. Obtain the balance coefficient q through Formula 4;
[0056] q = (W - P) / Q, Formula 4
[0057] Wherein, Q is the rated load capacity of the elevator car;
[0058] 5. Obtain the correction coefficient β1 from Table 1 according to the elevator balance coefficient. Table 1 is as follows:
[0059] Table 1
[0060] q 0.40 0.42 0.44 0.45 0.46 0.48 0.50 β1 1.18 1.11 1.03 1.00 0.96 0.90 0.82
[0061] 6. Obtain the correction coefficient β2 from Table 2 according to the weight of the elevator car. Table 2 is as follows:
[0062] Table 2
[0063]
[0064] 7. Obtain the maximum value L'max of the corrected elevator braking distance through Formula 5;
[0065] L'max = (Lmax - Vt) / β1β2 + Vt, Formula 5
[0066] Wherein, Lmax is obtained from Table 3. Table 3 is as follows:
[0067] Table 3
[0068]
[0069] 8. The qualified range for judging the braking ability of the corrected elevator is Lmin ~ L'max, wherein, Lmin takes the Lmin corresponding to Lmax;
[0070] 9. Judge whether L is within the qualified range for judging the braking ability of the corrected elevator. If it is within this range, the elevator braking ability is qualified; if it is not within this range, the elevator braking ability is unqualified.
[0071] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A traction elevator braking ability detection and warning device, characterized in that, It includes an operation detection component, a weighing detection component and an operation warning component. The operation warning component is respectively communicatively connected to the operation detection component and the weighing detection component. The operation detection component is installed on the top of the elevator car to collect the average deceleration data and the running speed data of the elevator, and upload these data to the operation warning component. The weighing detection component is used to be installed on the steel wire rope of the elevator car or the steel wire rope of the elevator counterweight to collect the elevator car weight data and the elevator counterweight weight data, and upload these data to the operation warning component. The operation warning component is used to analyze whether there is an abnormality in the current braking ability of the elevator according to the data uploaded by the operation detection component and the weighing detection component, and issue a warning when it is analyzed that there is an abnormality in the current braking ability of the elevator.
2. The traction elevator braking ability detection and warning device according to claim 1, characterized in that, The operation detection component includes a first structural housing, an acceleration sensor, a first data processing module, a first data transmission module and a first power management module. The bottom surface of the first structural housing is provided with a magnetic structure to install the first structural housing on the top of the elevator car through the magnetic structure. The acceleration sensor, the first data processing module, the first power management module and the first data transmission module are all installed in the first structural housing. The acceleration sensor and the first data processing module are electrically connected. The first data processing module and the first data transmission module are electrically connected. The first data transmission module and the operation warning component are communicatively connected. The first power management module and the acceleration sensor, the first data processing module and the first data transmission module are electrically connected. The acceleration sensor is used to collect the original deceleration data and the original running speed data of the elevator car, and transmit these data to the first data processing module. The first data processing module is used to process the original deceleration data and the original running speed data of the elevator car, and transmit the processed data to the first data transmission module. The first data transmission module is used to upload the received data to the operation warning component. The first power management module is used to supply power to the acceleration sensor, the first data processing module and the first data transmission module.
3. The traction elevator braking ability detection and warning device according to claim 2, characterized in that, The weighing detection component includes a wire rope tension sensor, a second data processing module, a second data transmission module and a second power management module. The second data processing module is respectively electrically connected to the wire rope tension sensor and the second data transmission module. The second data transmission module and the operation warning component are communicatively connected. The second power management module and the wire rope tension sensor, the second data processing module and the second data transmission module are electrically connected. The wire rope tension sensor is used to be installed on the wire rope of the elevator car or the wire rope of the elevator counterweight to respectively collect the original tension data of the wire rope of the car and the original tension data of the wire rope of the elevator counterweight, and transmit these data to the second data processing module; the second data processing module is used to respectively obtain the elevator car weight data and the elevator counterweight weight data according to the original tension data of the wire rope of the car and the original tension data of the wire rope of the elevator counterweight, and transmit these data to the second data transmission module, and the second data transmission module is used to upload these data to the operation and warning component, and the second power management module is used to supply power to the wire rope tension sensor, the second data processing module and the second data transmission module.
4. The traction elevator braking ability detection and warning device according to claim 3, characterized in that, The operation and warning component includes a second structural housing, a data receiving module, a data operation module, a short message warning module, a sound warning module and a third power management module. The data receiving module, the data operation module, the short message warning module, the sound warning module and the third power management module are all installed in the second structural housing. The data receiving module is respectively communicatively connected to the first data transmission module and the second data transmission module. The data operation module is respectively electrically connected to the data receiving module, the short message warning module and the sound warning module. The third power management module is electrically connected to the data receiving module, the data operation module, the short message warning module and the sound warning module. The data receiving module is used to receive the data uploaded from the first data transmission module and the second data transmission module, and transmit these data to the data operation module. The data operation module is used to evaluate the elevator braking ability according to the received data. The short message warning module is used to send a warning short message to the emergency contact when the elevator braking ability is insufficient. The sound warning module is used to emit a sound warning signal when the elevator braking ability is insufficient. The third power management module is used to supply power to the data receiving module, the data operation module and the sound warning module.
5. The traction elevator braking ability detection and warning device according to claim 4, characterized in that The bottom of the second structural housing is provided with a magnetic structure for installing the second structural housing on the top of the elevator car, and the data receiving module is electrically connected to the first data transmission module.
6. The traction elevator braking ability detection and warning device according to claim 4, characterized in that, The bottom of the second structural housing is provided with a magnetic structure for installing the second structural housing in the elevator shaft, and the data receiving module is wirelessly connected to the first data transmission module.
7. The traction elevator braking ability detection and warning device according to claim 3, characterized in that, The operation and warning component is an electronic device with functions such as data receiving, data storage, data calculation and electronic display.
Citation Information
Patent Citations
Elevator brake distance detection method
CN111747252A