Elevator balance coefficient measuring device and elevator detection system

Abstract

The utility model discloses an elevator balance coefficient measuring device and an elevator detection system. The elevator balance coefficient measuring device comprises a speed measuring module, a flush sensing module, a current measuring module and a handheld terminal. The speed measurement module comprises a speed measurement sensor and a first signal converter, the first signal converter is electrically connected with the speed measurement sensor, and the speed measurement sensor is used for collecting the rotating speed of the traction wheel; the flush sensing module comprises a flush sensing sensor and a second signal converter, the second signal converter is electrically connected with the flush sensing sensor, and the flush sensing sensor is used for collecting the flush state of the elevator car and the elevator counterweight; the current measuring module comprises a current transformer and a third signal converter, the third signal converter is electrically connected with the current transformer, and the current transformer is used for collecting three-phase current signals of the traction motor. By integrating various sensors, the measurement error of a single sensor is effectively eliminated, and the accuracy and efficiency of elevator balance coefficient measurement are improved.

Description

Technical Field

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

[0002] The balance coefficient of a traction elevator is typically between 0.40 and 0.50. If the balance coefficient is too high or too low, it can cause discomfort and harm to the elevator and its users. For example, if the balance coefficient of a traction elevator is too low, problems such as reduced traction capacity, increased energy consumption, difficulty in braking, and decreased comfort may occur, posing a safety hazard. Existing elevator balance coefficient measurement devices usually employ a single sensor solution, which struggles to eliminate interference from elevator operation, resulting in insufficient measurement accuracy, low efficiency, large errors, and the inability to perform dynamic monitoring. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an elevator balance coefficient measuring device and an elevator detection system. By integrating multiple sensors and fusing multi-sensor information, it effectively eliminates the measurement error of a single sensor, improving the accuracy and efficiency of elevator balance coefficient measurement.

[0004] On one hand, this utility model embodiment provides an elevator balance coefficient measuring device, comprising:

[0005] A speed measuring module, comprising a speed measuring sensor and a first signal converter, wherein the first signal converter is electrically connected to the speed measuring sensor, and the speed measuring sensor is used to collect the rotational speed of the traction sheave;

[0006] The alignment sensing module includes an alignment sensor and a second signal converter. The second signal converter is electrically connected to the alignment sensor. The alignment sensor is used to collect the alignment status of the elevator car and the elevator counterweight.

[0007] A current measurement module, comprising a current transformer and a third signal converter, wherein the third signal converter is electrically connected to the current transformer, and the current transformer is used to acquire the three-phase current signal of the traction motor;

[0008] The handheld terminal is communicatively connected to the speed measurement module, the alignment sensing module, and the current measurement module.

[0009] According to some embodiments of this utility model, the speed sensor is an incremental rotary encoder, which is installed on the end face of the traction sheave shaft, and the gap between the speed sensor and the end face of the traction sheave shaft is 1 to 2 mm.

[0010] According to some embodiments of the present invention, the alignment sensor is a laser alignment detection module, which includes a first laser detection head and a second laser detection head, which are respectively installed opposite to each other on the sides of the elevator car and the elevator counterweight.

[0011] According to some embodiments of the present invention, the current transformer is an open-type Hall sensor, and the current transformer is clamped on the traction machine cable.

[0012] According to some embodiments of the present invention, the speed measuring module, the alignment sensing module, and the current measuring module further include a first wireless communication unit and a first antenna.

[0013] According to some embodiments of the present invention, the handheld terminal includes a second wireless communication unit and a second antenna.

[0014] According to some embodiments of the present invention, the handheld terminal is wirelessly connected to the speed measurement module, the alignment sensing module, and the current measurement module, respectively.

[0015] According to some embodiments of the present invention, the handheld terminal includes a display module for displaying measurement results.

[0016] According to some embodiments of the present invention, the handheld terminal further includes an early warning module, which is used for audible and visual alarms.

[0017] On the other hand, this utility model embodiment provides an elevator testing system, which includes the elevator balance coefficient measuring device described above.

[0018] The embodiments of this utility model have at least the following beneficial effects:

[0019] This utility model provides an elevator balance coefficient measuring device, including a speed measuring module, a leveling induction module, a current measuring module, and a handheld terminal. It collects elevator operating signals through a speed sensor, a leveling induction sensor, and a current transformer, fusing speed, position, and current signal data to effectively eliminate measurement errors from a single sensor. The leveling induction sensor accurately captures the spatial position of the elevator car and counterweight, while the speed sensor compensates for speed variables in real time, eliminating friction interference. This enables real-time measurement of the elevator balance coefficient under all operating conditions, making the measured value closer to the true balance coefficient value and providing reliable data support for the safe operation of the elevator. It achieves comprehensive and high-precision monitoring of the elevator's operating status, improving the accuracy and efficiency of elevator balance coefficient measurement.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the elevator balance coefficient measuring device and the elevator according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 The diagram shows the speed measuring module of the elevator balance coefficient measuring device.

[0024] Figure 3 for Figure 1 The diagram shows the alignment sensing module of the elevator balance coefficient measuring device.

[0025] Figure 4 for Figure 1 The diagram shows the current measurement module of the elevator balance coefficient measuring device.

[0026] Figure 5 for Figure 1 A block diagram of the handheld terminal for the elevator balance coefficient measuring device is shown.

[0027] Figure 6 for Figure 1 The diagram shows the communication principle between the handheld terminal and the speed measuring module of the elevator balance coefficient measuring device.

[0028] Figure label:

[0029] Speed ​​measurement module 100, speed sensor 110, first signal converter 120, first wireless communication unit 130, first antenna 140, alignment sensing module 200, alignment sensing sensor 210, first laser detection head 211, second laser detection head 212, second signal converter 220, current measurement module 300, current transformer 310, third signal converter 320, handheld terminal 400, second wireless communication unit 410, second antenna 420, display module 430, and early warning module 440;

[0030] Traction sheave 510, elevator car 520, elevator counterweight 530, traction motor 540, traction machine cable 550, wire rope 560, guide wheel 570. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first," "second," etc., are used in the description, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0034] In the description of this utility model, unless otherwise explicitly defined, the terms "setting", "installing", "connecting" and "connected" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in combination with the specific content of the technical solution.

[0035] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Please refer to Figures 1 to 4This embodiment discloses an elevator balance coefficient measuring device, including a speed measuring module 100, a leveling sensing module 200, a current measuring module 300, and a handheld terminal 400. The speed measurement module 100 includes a speed sensor 110 and a first signal converter 120, which is electrically connected to the speed sensor 110. The speed sensor 110 is used to collect the rotational speed of the traction sheave 510. The alignment sensing module 200 includes an alignment sensing sensor 210 and a second signal converter 220, which is electrically connected to the alignment sensing sensor 210. The alignment sensing sensor 210 is used to collect the alignment status of the elevator car 520 and the elevator counterweight 530. The current measurement module 300 includes a current transformer 310 and a third signal converter 320, which is electrically connected to the current transformer 310. The current transformer 310 is used to collect the three-phase current signal of the traction motor 540. The handheld terminal 400 is communicatively connected to the speed measurement module 100, the alignment sensing module 200, and the current measurement module 300. By collecting speed, position, and current signals of the elevator through speed sensor 110, leveling sensor 210, and current transformer 310, and performing multi-sensor information fusion, the measurement error of a single sensor is effectively eliminated, making the measured value of the elevator balance coefficient closer to the true balance coefficient value, providing reliable data support for the safe operation of the elevator; realizing comprehensive and high-precision monitoring of the elevator's operating status, and improving the accuracy and efficiency of elevator balance coefficient measurement.

[0037] Please refer to Figure 1 and Figure 2 The speed sensor 110 is an incremental rotary encoder, installed on the end face of the shaft of the traction sheave 510. The gap between the speed sensor 110 and the end face of the shaft of the traction sheave 510 is 1~2mm. A non-contact photoelectric encoder is used, fixed by a magnetic base. The incremental rotary encoder is fixed to the output shaft end of the traction sheave 510 through a flexible coupling, ensuring a speed measurement accuracy of ±0.01m / s. Combined with the signal collected by the incremental rotary encoder, it is possible to dynamically determine whether the elevator car is in a uniform speed running state, judging that the speed fluctuation is less than 5%, ensuring the effectiveness of current data acquisition.

[0038] Please refer to Figure 1 and Figure 3The alignment sensor 210 is a laser alignment detection module, which includes a first laser detection head 211 and a second laser detection head 212. The first laser detection head 211 and the second laser detection head 212 are respectively installed opposite to each other on the sides of the elevator car 520 and the elevator counterweight 530. The alignment sensor 210 is installed on the adjacent sides of the elevator car 520 and the elevator counterweight 530, and the perpendicularity error between the beam axis and the guide rail of the elevator car 520 is ≤0.1°, forming a dual-plane detection reference. The traction sheave speed is obtained in real time by an incremental rotary encoder, and the car linear velocity is calculated synchronously to monitor the elevator to maintain a constant speed. In conjunction with the laser sensor matrix on the adjacent sides of the car and the counterweight, a dynamic reference plane is established to accurately determine the horizontal alignment status of the car and the counterweight.

[0039] Please refer to Figure 1 and Figure 4 The current transformer 310 is an open-type Hall sensor, which is clamped onto the traction machine cable 550. The three-phase current transformer 310 uses open-type Hall elements and is clamped onto the U / V / W power lines of the traction machine cable 550 respectively; the measurement range is 0-200A, and the nonlinearity is ≤0.2%.

[0040] Please refer to Figure 2 , Figure 3 and Figure 4 The speed measurement module 100, the alignment sensing module 200, and the current measurement module 300 also include a first wireless communication unit 130 and a first antenna 140. The speed measurement module 100, the alignment sensing module 200, and the current measurement module 300 are wirelessly connected to the handheld terminal 400 via the built-in first wireless communication unit 130 and first antenna 140, employing Internet of Things (IoT) technology to achieve wireless transmission between the data acquisition module and the handheld terminal 400.

[0041] Please refer to Figure 5 The handheld terminal 400 includes a second wireless communication unit 410 and a second antenna 420. The handheld terminal 400 has a second wireless communication unit 410 and a second antenna 420, which ensures that the handheld terminal 400 can transmit data with the speed measurement module 100, the alignment sensing module 200 and the current measurement module 300.

[0042] Please refer to Figure 1 and Figure 6The handheld terminal 400 is wirelessly connected to the speed measurement module 100, the alignment sensing module 200, and the current measurement module 300. Wireless communication between these three modules and the handheld terminal 400 is achieved through the first wireless communication unit 130 and the first antenna 140 equipped in each module. The speed measurement module 100, the alignment sensing module 200, and the current measurement module 300 transmit their respective collected data signals to the handheld terminal 400 via their built-in first wireless communication unit 130 and first antenna 140. The handheld terminal 400 receives these signals through its built-in second wireless communication unit 410 and second antenna 420, improving operational convenience and data acquisition efficiency.

[0043] Please refer to Figure 5 The handheld terminal 400 includes a display module 430, which is used to display measurement results. When a signal indicating that the elevator car 520 and the elevator counterweight 530 are aligned on both planes is detected and the elevator is in a constant speed state, the current value of the traction motor 540 is monitored and collected, triggering the calculation and output of the elevator balance coefficient, and the elevator balance coefficient is displayed on the display module 430.

[0044] Please refer to Figure 5 The handheld terminal 400 also includes an early warning module 440, which is used for audible and visual alarms. When an abnormal situation occurs during the measurement process, the early warning module 440 will trigger an audible and visual alarm.

[0045] This embodiment also discloses an elevator testing system, including the elevator balance coefficient measuring device described above. Please refer to... Figure 1 The elevator detection system adopts a distributed sensor architecture and also includes steel wire rope 560 and guide wheel 570, etc.

[0046] During measurement, the system executes a self-test procedure after power-on, including sensor zero-point calibration, communication link testing, and reference position adjustment. It then enters monitoring mode, using speed sensor 110, alignment sensor 210, and current transformer 310 to collect real-time data on traction sheave 510 speed pulses, laser on / off signals, and current waveforms. When a dual-plane alignment signal between the elevator car 520 and the elevator counterweight 530 is detected, and the elevator is at a constant speed, the system calculates and outputs the elevator balance coefficient, which is displayed on the display module 430. Furthermore, it features real-time dynamic calibration, automatically adjusting measurement parameters under different elevator load conditions to adapt to complex and changing operating environments, ensuring the stability and consistency of measurement results. Compared to traditional static measurement methods, dynamic calibration improves measurement efficiency, shortens the detection cycle, and reduces manual intervention. It can remotely monitor the balance status of multiple elevators, promptly identify potential faults, and implement preventative maintenance. It effectively solves the pain points of insufficient accuracy and low efficiency of traditional measurement methods, breaks through the limitations of traditional static testing, performs multi-sensor information fusion, realizes dynamic monitoring under all working conditions, has high measurement accuracy and fast data update frequency, provides real-time quantitative basis for elevator commissioning, significantly improves detection efficiency and system reliability, and provides important technical support for elevator safe operation and maintenance and intelligent upgrading.

[0047] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A device for measuring the balance coefficient of an elevator, characterized in that, include: Speed ​​measuring module (100), the speed measuring module (100) includes a speed measuring sensor (110) and a first signal converter (120), the first signal converter (120) is electrically connected to the speed measuring sensor (110), the speed measuring sensor (110) is used to collect the rotational speed of the traction wheel (510); The alignment sensing module (200) includes an alignment sensing sensor (210) and a second signal converter (220). The second signal converter (220) is electrically connected to the alignment sensing sensor (210). The alignment sensing sensor (210) is used to collect the alignment status of the elevator car (520) and the elevator counterweight (530). A current measurement module (300) includes a current transformer (310) and a third signal converter (320). The third signal converter (320) is electrically connected to the current transformer (310). The current transformer (310) is used to collect the three-phase current signal of the traction motor (540). A handheld terminal (400) is communicatively connected to the speed measurement module (100), the alignment sensing module (200), and the current measurement module (300).

2. The elevator balance coefficient measuring device according to claim 1, characterized in that, The speed sensor (110) is an incremental rotary encoder, which is installed on the end face of the shaft of the traction wheel (510). The gap between the speed sensor (110) and the end face of the shaft of the traction wheel (510) is 1~2mm.

3. The elevator balance coefficient measuring device according to claim 1, characterized in that, The alignment sensor (210) is a laser alignment detection module. The laser alignment detection module includes a first laser detection head (211) and a second laser detection head (212). The first laser detection head (211) and the second laser detection head (212) are respectively installed opposite to each other on the sides of the elevator car (520) and the elevator counterweight (530).

4. The elevator balance coefficient measuring device according to claim 1, characterized in that, The current transformer (310) is an open-type Hall sensor, and the current transformer (310) is clamped on the traction machine cable (550).

5. The elevator balance coefficient measuring device according to claim 4, characterized in that, The speed measurement module (100), the alignment sensing module (200), and the current measurement module (300) further include a first wireless communication unit (130) and a first antenna (140).

6. The elevator balance coefficient measuring device according to claim 5, characterized in that, The handheld terminal (400) includes a second wireless communication unit (410) and a second antenna (420).

7. The elevator balance coefficient measuring device according to claim 6, characterized in that, The handheld terminal (400) is wirelessly connected to the speed measurement module (100), the alignment sensing module (200), and the current measurement module (300), respectively.

8. The elevator balance coefficient measuring device according to claim 1, characterized in that, The handheld terminal (400) includes a display module (430) for displaying measurement results.

9. The elevator balance coefficient measuring device according to claim 8, characterized in that, The handheld terminal (400) also includes an early warning module (440), which is used for audible and visual alarms.

10. An elevator detection system, characterized in that, The elevator testing system includes the elevator balance coefficient measuring device as described in any one of claims 1 to 9.

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