Automatic elevator balance coefficient measuring device

Abstract

An automatic measuring device for an elevator balance coefficient relates to the technical field of characteristic equipment elevators, and can improve the measuring precision and efficiency of the elevator balance coefficient and provide more reliable guarantee for safe operation of the elevator. In the automatic elevator balance coefficient measuring device, a speed measuring sensor is used for measuring the running speed of an elevator in real time and calculating the total running distance of the elevator from a base station to a top floor according to speed data; the handheld receiving and displaying module is used for inputting running load data during ascending or descending every time when an elevator car and a counterweight are located at the same horizontal position and an elevator runs at a constant speed; the clamp-type opening current transformers are respectively clamped at the input ends of the U / V / W power lines of the elevator traction motor, and are used for monitoring and collecting the three-phase current values of the input ends of the power lines of the motor in a non-intrusive manner, and ensuring the safety and accuracy of the measurement process at the same time.

Description

Technical Field

[0001] This utility model relates to the field of special equipment elevator technology, and in particular to an automatic elevator balance coefficient measuring device. Background Technology

[0002] Currently, elevators are an indispensable vertical transportation device in modern buildings, and their safety and stability are directly related to the safety of passengers' lives and property. During elevator operation, the balance coefficient is a crucial parameter, reflecting the gravitational relationship between the elevator car and the counterweight.

[0003] When an elevator is balanced, the weight of the car and counterweight should be in a relatively stable state to ensure safe and smooth operation. Appendix G of GB7588-2003 "Safety Code for Elevator Manufacturing and Installation" defines the balance coefficient as the amount by which the rated load and car mass are balanced by the counterweight or counterweight. Item 8.5 of TSGT7001-2009 "Rules for Supervision and Periodic Inspection of Elevators—Traction and Forced Drive Elevators" stipulates that the balance coefficient of a traction elevator should be between 0.40 and 0.50 or conform to the design value of the manufacturing (modification) unit. Most traction drive elevators manufactured in my country use a balance coefficient of 0.40 to 0.50. An excessively large or small balance coefficient can cause various hazards to the elevator and users, making it crucial to strengthen the testing of the balance coefficient.

[0004] While some elevator balance coefficient measuring devices exist in the current technology, their measurement accuracy, ease of operation, and degree of automation still need improvement. Therefore, with the continuous development of elevator technology and the increasing demands for elevator safety performance, it is particularly important to provide a device that can quickly, accurately, and automatically measure the elevator balance coefficient. Utility Model Content

[0005] The purpose of this invention is to provide an automatic elevator balance coefficient measuring device, which can improve the measurement accuracy and efficiency of elevator balance coefficient and provide a more reliable guarantee for the safe operation of elevators.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An automatic elevator balance coefficient measuring device includes: a speed sensor, which is used to measure the elevator's running speed in real time and calculate the total running distance of the elevator from the ground floor to the top floor based on the speed data; the speed sensor is used to determine the running position of the elevator car and the counterweight, and that the elevator is in a constant speed state.

[0008] The handheld receiving and display module is used to input the running load data when the elevator car and the counterweight are at the same horizontal position and the elevator is running at a constant speed, and to provide basic data for subsequent current-load curve plotting.

[0009] Clamp-on open-type current transformers are respectively clamped to the U / V / W power line input terminals of the elevator traction motor. They are used to non-invasively monitor and collect the three-phase current values ​​at the power line input terminals of the motor, while ensuring the safety and accuracy of the measurement process.

[0010] Based on the collected current and load data, the current-load curve is automatically plotted, and the elevator's balance coefficient value is obtained through data analysis and processing, providing a scientific basis for elevator maintenance and commissioning.

[0011] In practical applications, the speed sensor is fixed at the end of the adjustable mechanical structure. Adjusting the adjustable mechanical structure allows the groove of the speed sensor to fit tightly against the elevator wire rope. The adjustable mechanical structure is fixed to a non-rotating component around the elevator wire rope via a magnetic base.

[0012] The clamp-type open current transformer includes a first handle and a second handle connected by a fastening rotating shaft. Conductive metal blocks are provided at the open structures of the first handle and the second handle, and between the open structures and the fastening rotating shaft. An induction coil is provided between the two conductive metal blocks along the inner wall of the first handle and the second handle.

[0013] Specifically, the speed sensor and the clamp-on open current transformer are connected to the handheld receiver and display module via wireless communication.

[0014] Furthermore, the handheld receiving and display module includes: a terminal microprocessor, and a wireless communication module, a data storage module, a warning module, a button module, a display interface module, and a power module connected to the terminal microprocessor; and the display interface module is connected to a display module, and the power module is connected to a power source.

[0015] Compared with existing technologies, the automatic elevator balance coefficient measuring device of this utility model has the following advantages:

[0016] In the automatic elevator balance coefficient measuring device provided by this utility model, during the elevator's up and down operation, a speed sensor is used to measure the real-time operating speed of the elevator and calculate the distance of the entire elevator from the ground floor to the top floor to determine that the elevator car and counterweight are at the same horizontal position and in a uniform speed state; then, the load for each up or down operation is input from the handheld receiving and display module, and a clamp-type open current transformer is used to monitor and collect the current value at the input end of the motor power line, and a current-load curve is plotted to obtain the elevator balance coefficient value. Attached Figure Description

[0017] Figure 1 A schematic diagram of the usage state structure of the automatic elevator balance coefficient measuring device provided in this embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the installation structure of the speed sensor in the automatic elevator balance coefficient measuring device provided in this embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the clamp-on open current transformer in the automatic elevator balance coefficient measuring device provided in this embodiment of the utility model;

[0020] Figure 4 A schematic diagram of the frame structure of the handheld receiver and display module in the automatic elevator balance coefficient measuring device provided in this embodiment of the utility model.

[0021] Figure label:

[0022] 1-Speed ​​sensor; 11-Wheel groove; 41-Adjustable mechanical mechanism; 42-Magnetic base;

[0023] 2-Handheld receiver and display module; 21-Terminal microprocessor; 22-Wireless communication module; 23-Data storage module; 24-Early warning module; 25-Button module; 26-Display interface module; 261-Display module; 27-Power supply module; 271-Power supply;

[0024] 3-Clamp-type open current transformer; 31-Fixed rotating shaft; 321-First handle; 322-Second handle; 33-Open structure; 34-Conductive metal block; 35-Induction coil. Detailed Implementation

[0025] For ease of understanding, the automatic elevator balance coefficient measuring device provided in the embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] This utility model embodiment provides an automatic elevator balance coefficient measuring device, such as... Figures 1-4As shown, it includes: a speed sensor 1, which is used to measure the elevator's running speed in real time and calculate the total running distance of the elevator from the ground floor to the top floor based on the speed data; the speed sensor 1 is used to determine the running position of the elevator car and the counterweight, and that the elevator is in a constant speed state.

[0027] The handheld receiving and display module 2 is used to input the running load data when the elevator car and the counterweight are at the same horizontal position and the elevator is running at a constant speed, and to provide basic data for the subsequent current-load curve plotting.

[0028] Clamp-on open current transformer 3 is respectively clamped to the U / V / W power line input terminals of the elevator traction motor. It is used to non-invasively monitor and collect the three-phase current values ​​of the motor power line input terminals, while ensuring the safety and accuracy of the measurement process.

[0029] Based on the collected current and load data, the current-load curve is automatically plotted, and the elevator's balance coefficient value is obtained through data analysis and processing, providing a scientific basis for elevator maintenance and commissioning.

[0030] Compared with the prior art, the automatic elevator balance coefficient measuring device described in this embodiment of the invention has the following advantages:

[0031] In the automatic elevator balance coefficient measuring device provided in this embodiment of the utility model, during the elevator's up and down operation, a speed sensor is used to measure the real-time operating speed of the elevator and calculate the distance of the entire elevator from the ground floor to the top floor to determine that the elevator car and the counterweight are at the same horizontal position and are in a uniform speed state; then, the load for each up or down operation is input from the handheld receiving and display module, and a clamp-type open current transformer is used to monitor and collect the current value at the input end of the motor power line, and a current-load curve is plotted to obtain the elevator balance coefficient value.

[0032] In practical applications, such as Figure 2 As shown, the speed sensor 1 can be fixed at the end of the adjustable mechanical structure 41. Adjusting the adjustable mechanical structure 41 can make the wheel groove 11 of the speed sensor 1 fit tightly with the elevator wire rope. The adjustable mechanical structure 41 can be fixed to a non-rotating part around the elevator wire rope by the magnetic base 42, thereby facilitating the speed measurement.

[0033] Among them, such as Figure 3As shown, the clamp-on open current transformer 3 may include a first handle 321 and a second handle 322 connected by a fastening rotating shaft 31. Conductive metal blocks 34 may be provided at the opening structure 33 of the first handle 321 and the second handle 322, and between the opening structure 33 and the fastening rotating shaft 31. An induction coil 35 may be provided between the two conductive metal blocks 34 along the inner wall of the first handle 321 and the second handle 322. By pressing the first handle 321 and the second handle 322, the opening structure 33 of the clamp-on open current transformer 3 is opened, and the induction coil 35 is fitted onto the power input wire of the elevator motor. A complete induced electric field is formed through the conductive metal blocks 34 to achieve current value acquisition.

[0034] Specifically, the speed sensor 1 and the clamp-on open-type current transformer 3 can be wirelessly connected to the handheld receiving and display module 2, facilitating real-time monitoring and accurate data acquisition when the car and counterweight are aligned and the elevator is moving at a constant speed. The speed sensor 1 transmits the speed data to the microprocessor via a signal acquisition and conversion module. After processing, the data is transmitted to the handheld receiving and display module 2 via the wireless communication module. The clamp-on open-type current transformer 3 monitors and collects the current value of the motor and transmits it to the handheld receiving and display module 2 via the wireless communication module.

[0035] Furthermore, such as Figure 4 As shown, the handheld receiving and display module 2 may include: a terminal microprocessor 21, and a wireless communication module 22, a data storage module 23, a warning module 24, a button module 25, a display interface module 26, and a power module 27 connected to the terminal microprocessor 21; the display interface module 26 may be connected to a display module 261, and the power module 27 may be connected to a power supply 271. The speed and current data received by the handheld receiving and display module 2 are processed in the terminal microprocessor 21 and then displayed on the display module 261 through the display interface module 26.

[0036] The working process of the automatic elevator balance coefficient measuring device provided in this embodiment of the present invention will be described in detail below with reference to the accompanying drawings:

[0037] First, the high-precision speed sensor 1 is fixed to the end of the specially designed adjustable mechanical structure 41 to ensure that the wheel groove 11 of the speed sensor 1 is in close contact with the elevator wire rope; the adjustable mechanical structure 41 is fixed to the non-rotating parts around the elevator wire rope by the magnetic base 42 to ensure that the speed sensor 1 can stably and accurately measure the speed during the operation of the elevator.

[0038] Then, a clamp-on open current transformer 3 is non-contactly clamped onto the input end of the U / V / W power line of the elevator traction motor to ensure real-time and safe monitoring and acquisition of the motor current; at the same time, it is ensured that the handheld receiver and display module 2 has sufficient power and is functioning properly so that load data can be input and measurement results can be received and displayed during the measurement process.

[0039] Throughout the elevator's up and down movement, speed sensor 1 measures the elevator's speed in real time and transmits the speed data to the data processing system. Based on the speed data, the system accurately calculates the total travel distance of the elevator from the ground floor to the top floor. Speed ​​sensor 1 also determines whether the elevator car and counterweight are at the same horizontal level. Simultaneously, the system monitors the elevator's operating status to ensure that the elevator is moving at a constant speed while measuring the balance coefficient.

[0040] When the elevator meets the conditions for balance coefficient measurement, the operating load data for each upward or downward movement is input through the handheld receiving and display module 2. The clamp-on open current transformer 3 monitors and collects the current value at the input end of the motor power line in real time to ensure the safety and accuracy of the measurement process. The speed sensor 1, the clamp-on open current transformer 3, and the handheld receiving and display module 2 use wireless communication to realize real-time data transmission and reception. The system performs data analysis and processing based on the collected current and load data, and automatically plots the current-load curve. The balance coefficient value of the elevator is obtained through curve analysis and displayed on the handheld receiving and display module 2 for viewing and recording. Based on the balance coefficient value displayed on the handheld receiving and display module 2, scientific decisions are made regarding the maintenance and debugging of the elevator.

[0041] In summary, the automatic elevator balance coefficient measuring device provided by this utility model embodiment has the following advantages:

[0042] First, it can effectively improve the efficiency and accuracy of elevator safety inspections;

[0043] Second, the measurement process is automated and highly accurate, which can reduce the labor intensity of inspection personnel and thus effectively improve inspection efficiency;

[0044] Third, the convenience and wide applicability of the device make it a promising tool for elevator maintenance, upkeep and safety inspection.

[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An automatic elevator balance coefficient measuring device, characterized in that, include: The speed sensor is used to measure the elevator's running speed in real time and calculate the total running distance of the elevator from the ground floor to the top floor based on the speed data; the speed sensor is used to determine the running position of the elevator car and the counterweight, and that the elevator is in a constant speed state. The handheld receiving and display module is used to input the running load data when the elevator car and the counterweight are at the same horizontal position and the elevator is running at a constant speed, and to provide basic data for subsequent current-load curve plotting. Clamp-on open-type current transformers are respectively clamped to the U / V / W power line input terminals of the elevator traction motor. They are used to non-invasively monitor and collect the three-phase current values ​​at the power line input terminals of the motor, while ensuring the safety and accuracy of the measurement process. Based on the collected current and load data, the current-load curve is automatically plotted, and the elevator's balance coefficient value is obtained through data analysis and processing, providing a scientific basis for elevator maintenance and commissioning.

2. The automatic elevator balance coefficient measuring device according to claim 1, characterized in that, The speed sensor is fixed to the end of the adjustable mechanical structure. Adjusting the adjustable mechanical structure allows the groove of the speed sensor to fit tightly against the elevator wire rope. The adjustable mechanical structure is fixed to a non-rotating component around the elevator wire rope via a magnetic base.

3. The automatic elevator balance coefficient measuring device according to claim 2, characterized in that, The clamp-type open current transformer includes: a first handle and a second handle connected by a fastening rotating shaft, and conductive metal blocks are provided at the open structure of the first handle and the second handle, as well as between the open structure and the fastening rotating shaft. An induction coil is provided between the two conductive metal blocks along the inner wall of the first handle and the second handle.

4. The automatic elevator balance coefficient measuring device according to any one of claims 1-3, characterized in that, The speed sensor and the clamp-on open current transformer are connected to the handheld receiver and display module via wireless communication.

5. The automatic elevator balance coefficient measuring device according to claim 4, characterized in that, The handheld receiving and display module includes: a terminal microprocessor, and a wireless communication module, a data storage module, an early warning module, a button module, a display interface module, and a power module connected to the terminal microprocessor; and the display interface module is connected to a display module, and the power module is connected to a power source.

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