Elevator guide rail gauge measuring device

Abstract

An elevator guide rail gauge measuring device provided by the present invention comprises a supporting leg, the top end of the supporting leg is connected with a balance support through an installation shaft, the upper surface of the balance support is provided with two parallel first grooves along the measurement direction, a measuring rod is embedded and clamped in the first grooves, and laser sensors are symmetrically installed at the two ends of the measuring rod. A linear displacement sensor is arranged in the measuring rod; a main control box is connected above the measuring rod at the top of the balance support, a mainboard, an IMU sensor and an angle sensor are integrated in the main control box, the mainboard, the IMU sensor, the angle sensor, the linear displacement sensor and the laser sensor are electrically connected with the signal input end of the main control box, and the signal output end of the main control box is electrically connected with external terminal equipment. Through the multi-sensor space-time synchronization technology, the track gauge data of the guide rail at different moments can be comprehensively and accurately obtained, meanwhile, the angle deviation is actively corrected through the multi-source data fusion algorithm and the least square algorithm, and the accuracy and timeliness of measurement are guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of elevator safety detection equipment, and in particular to an elevator guide rail gauge measuring device. Background Art

[0002] Accurate measurement of elevator guide rail gauge reflects the deviation of the guide rail top surface and is an important performance indicator during elevator installation, operation, routine maintenance, and periodic inspections. GB / T42615-2023, "Specifications for Safety Assessment of In-Use Elevators," stipulates the maximum relative deviation between plumb line measurements every 5 meters on the working surface of each guide rail. This deviation must not exceed 1.2mm for car guide rails and T-type counterweight guide rails equipped with safety clamps, and 2.0mm for T-type counterweight guide rails without safety clamps. It also specifies the distance deviation between the top surfaces of two guide rails: 0mm to +2mm for car guide rails and 0mm to +3mm for counterweight guide rails.

[0003] Traditional elevator guide rail gauge measurement relies heavily on manual tape measurement, which has the following drawbacks: (1) The natural wear of the tape or human factors can easily lead to inaccurate measurement accuracy, low measurement efficiency, and the inability to measure continuously; (2) There are significant safety hazards in high-altitude operations. Some existing technologies use single-point laser static measurement or contact sensor measurement. Among them, the data of single-point laser static measurement is discrete and cannot fully reflect the actual situation of the guide rail gauge. Contact sensor measurement is seriously affected by mechanical vibration, environmental interference, and reference drift, and it is difficult to meet the accuracy requirements during dynamic measurement. In addition, most of these methods require complex installation and modification of the elevator, which is an invasive installation, affecting the normal operation of the elevator and may cause damage to the elevator structure. Summary of the Invention

[0004] The present invention provides an elevator guide rail gauge measuring device, which aims to accurately obtain guide rail gauge data at different times through multi-sensor spatiotemporal synchronization technology to ensure the accuracy and timeliness of measurement. It also adopts a non-invasive installation method to avoid damage to the original structure of the elevator. The installation is convenient and does not affect the normal operation of the elevator.

[0005] To achieve its purpose, the present invention adopts the following technical solutions: An elevator guide rail gauge measuring device includes a support leg, the top of the support leg is connected to a balance bracket via a mounting shaft, and the balance bracket can rotate around the mounting shaft; the upper surface of the balance bracket is provided with two parallel first grooves along the measuring direction, a measuring rod is embedded in and snap-connected in the first groove, laser sensors are symmetrically installed at both ends of the measuring rod, and a linear displacement sensor is provided in the measuring rod; a main control box is provided above the measuring rod at the top of the balance bracket, a second groove symmetrical to the first groove is provided at the bottom of the main control box, and the measuring rod is embedded in and snap-connected to the bottom of the main control box through the second groove; a main board, an IMU sensor and an angle sensor are integrated in the main control box, the main board, IMU sensor, angle sensor, linear displacement sensor and laser sensor are electrically connected to the signal input end of the main control box respectively, and the signal output end of the main control box is electrically connected to an external terminal device.

[0006] Preferably, the main control box is also integrated with a multi-source data fusion algorithm module and a least squares algorithm module to correct data deviations in real time.

[0007] Preferably, the legs are retractable and are triangular legs.

[0008] Preferably, the bottom end of the leg is connected to a magnetic foot.

[0009] Preferably, locking knobs are provided on the bottom and sides of the balancing bracket.

[0010] Preferably, the measuring rod is retractable and has a scale on it.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides an elevator guide rail gauge measurement device that, through multi-sensor spatiotemporal synchronization technology, comprehensively and accurately acquires guide rail gauge data at different moments, ensuring measurement accuracy and timeliness. Furthermore, it utilizes a multi-source data fusion algorithm and a least-squares algorithm to actively correct angular deviations, effectively overcoming angular errors caused by vibration and installation errors, and improving measurement accuracy.

[0012] 2. The elevator guide rail gauge measuring device provided by the present invention adopts a non-invasive installation method, and the installation process is simple and quick, does not affect the normal operation of the elevator, avoids damage to the original structure of the elevator, and reduces installation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A perspective view of an elevator guide rail gauge measuring device according to the present invention; Figure 2 This is a front view of the elevator guide rail gauge measuring device of the present invention; Figure 3 A top view of the elevator guide rail gauge measuring device of the present invention; In the figure: 1-support leg; 2-balance bracket; 3-first groove; 4-measuring rod; 5-laser sensor; 6-main control box; 7-second groove; 8-locking knob; 9-magnetic support foot; 10-scale. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to the accompanying drawings: like Figure 1-3 As shown, the present invention is a device for measuring the gauge of an elevator guide rail. The device comprises a support leg 1, which is a retractable triangular support leg. A magnetic foot 9 is connected to the bottom end of the support leg 1. The top end of the support leg 1 is connected to a balancing bracket 2 via a mounting shaft. The balancing bracket 2 is rotatable about the mounting shaft. Locking knobs 8 are provided on the bottom and sides of the balancing bracket 2. Two parallel first grooves 3 are provided on the upper surface of the balancing bracket 2 along the measurement direction. A retractable measuring rod 4 is embedded and engaged in the first grooves 3. When engaged, this effectively prevents lateral movement of the measuring rod 4 relative to the balancing bracket 2. The measuring rod 4 is provided with a scale 10. Laser sensors 5 are symmetrically mounted at both ends of the measuring rod 4 for measuring the guide rail spacing. A linear displacement sensor is also provided within the measuring rod 4 for measuring the spacing between the two laser sensors 5. A main control box 6 is provided above the measuring rod 4 at the top of the balancing bracket 2, and a second groove 7 symmetrical to the first groove 3 is provided at the bottom of the main control box 6. The measuring rod 4 is embedded and snap-connected to the bottom of the main control box 6 through the second groove 7. The design of the second groove 7 further prevents the lateral movement of the measuring rod 4 and ensures the coaxiality and relative position stability between the main control box 6, the measuring rod 4 and the balancing bracket 2. The main control box 6 integrates a main board, an IMU sensor and an angle sensor, and also integrates a multi-source data fusion algorithm module and a least squares algorithm module for real-time correction of data deviations. The main board, IMU sensor, angle sensor, linear displacement sensor and laser sensor 5 are respectively electrically connected to the signal input end of the main control box 6, and the signal output end of the main control box 6 is electrically connected to the external terminal device. The main control box 6 serves as the core control unit and is responsible for data processing and transmission.

[0015] Before measuring the elevator guide rail gauge, adjust the telescopic length of the support legs 1 according to the actual elevator height. Once adjusted, quickly and reliably attach the magnetic feet 9 to the elevator car roof. Then, rotate the balancing bracket 2 around its mounting axis to keep the measuring rod 4 horizontal and ensure that the laser sensor 5 is aligned with the elevator guide rail. The telescopic length of the measuring rod 4 is then adjusted as needed, and the linear displacement sensor simultaneously measures the telescopic length of the measuring rod 4. Once the measuring rod 4 is properly positioned, tighten the locking knobs 8 on the bottom and sides of the balancing bracket 2 to ensure that the balancing bracket 2, measuring rod 4, and main control box 6, connected by the first groove 3 and the second groove 7, form a rigid, integrated structure. Simultaneously, debug the existing external terminal equipment for proper operation.

[0016] When measuring the elevator guide rail gauge, the device is started, all sensors begin operating, and the elevator is operated at maintenance speed. Specifically, two laser sensors 5 each acquire the distance between their respective guide rails. The linear displacement sensor collects the distance between the laser sensors 5 for displacement feedback. Simultaneously, the IMU sensor and angle sensor collect real-time displacement, attitude, and angle information of the measurement device. The main control box 6 first fuses the data collected by all sensors using a multi-source data fusion algorithm module. Then, the least squares algorithm module actively corrects the offset and angular deviation of the laser transmitter axis. Finally, the obtained precise guide rail gauge data is transmitted to an external terminal device for display and analysis.

Claims

1. An elevator guide rail gauge measuring device, characterized in that: The invention comprises a support leg (1), wherein the top of the support leg (1) is connected to a balancing bracket (2) via a mounting shaft, and the balancing bracket (2) is rotatable around the mounting shaft; the upper surface of the balancing bracket (2) is provided with two parallel first grooves (3) along the measuring direction, a measuring rod (4) is embedded in and connected in a snap-fit ​​manner in the first groove (3), laser sensors (5) are symmetrically mounted at both ends of the measuring rod (4), and a linear displacement sensor is provided in the measuring rod (4); a main control box (6) is provided above the measuring rod (4) at the top of the balancing bracket (2), a second groove (7) symmetrical to the first groove (3) is provided at the bottom of the main control box (6), and the measuring rod (4) is embedded in and connected in a snap-fit ​​manner to the bottom of the main control box (6) via the second groove (7); a mainboard, an IMU sensor and an angle sensor are integrated in the main control box (6), the mainboard, the IMU sensor, the angle sensor, the linear displacement sensor and the laser sensor (5) are respectively electrically connected to a signal input end of the main control box (6), and a signal output end of the main control box (6) is electrically connected to an external terminal device.

2. An elevator guide rail gauge measuring device according to claim 1, characterized in that: The main control box (6) is also integrated with a multi-source data fusion algorithm module and a least squares algorithm module to correct data deviations in real time.

3. The elevator guide rail gauge measuring device according to claim 1, characterized in that: The supporting legs (1) are retractable and are triangular supporting legs.

4. An elevator guide rail gauge measuring device according to claim 3, characterized in that: The bottom end of the support leg (1) is connected to a magnetic support foot (9).

5. The elevator guide rail gauge measuring device according to claim 1, characterized in that: The bottom and side of the balancing bracket (2) are both provided with locking knobs (8).

6. An elevator guide rail gauge measuring device according to any one of claims 1 to 5, characterized in that: The measuring rod (4) is retractable and has a scale (10) on it.

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