Laser detector for measuring verticality of elevator guide rail and measuring method

Abstract

The invention provides a laser detector for measuring the verticality of an elevator guide rail. The laser detector comprises a laser ranging vehicle and a light spot detection vehicle, the laser distance measuring sensor is arranged at the right front part of the laser distance measuring vehicle, and the detection end of the laser distance measuring sensor detects in the direction deviating from the laser distance measuring vehicle; the gear motor, the magnetic wheel and the auxiliary magnetic wheel are positioned at the bottom of the equipment; the tilt angle sensor is vertically arranged right behind the interior of the laser detection vehicle; the obstacle avoidance sensors are mounted at the front and rear ends of the laser ranging vehicle and extend out of a section of area; the distortionless position detection lens is mounted right in front of the light spot detection vehicle; the control circuit board is arranged in the lower half area of the interior of the two vehicles and electrically connected with the laser distance measuring sensor, the gear motor, the tilt angle sensor, the obstacle avoidance sensor and the distortionless detection lens; the verticality detector can measure the incompletely vertical area of the guide rail in the installation and use process of the elevator guide rail. The measuring instrument can measure various parameters.

Description

Technical Field

[0001] The invention relates to the field of elevator measurement, and in particular to a laser detector and a measuring method for measuring the verticality of an elevator guide rail. Background Art

[0002] Elevators are widely used in buildings due to their comfort and speed. While they bring convenience to people, they also threaten people's lives due to quality problems. Therefore, it is necessary to analyze the factors that affect the quality of elevators. As an important part of the elevator system, the performance of the elevator guide rail directly affects the safe and stable operation of the elevator system. The car is easily affected by the guide rail and vibrates during actual operation, which affects the stable operation of the car and increases safety hazards. In the prior art, due to the difficulty of on-site measurement of the straightness of the elevator guide rail, the installation and debugging of the guide rail requires a lot of manpower and material resources, and its disadvantages are that the measurement accuracy is difficult to meet the requirements, and the measurement data cannot be automatically collected, the work efficiency is low, and the safety is poor. How to fundamentally solve the above problems is a very realistic problem.

[0003] With the development and widespread application of laser technology, laser measurement technology has become more and more mature, which has opened a convenient door for solving the problem of verticality detection. Moreover, due to the application of distortion-free position detection cameras, the problem of conversion calculation of the measurement position has been solved. By inventing a laser detector for measuring the verticality of elevator guide rails, the verticality of elevator guide rails can be measured accurately, conveniently and comprehensively, which provides great convenience for the inspection and testing of special equipment and improves work efficiency. Summary of the invention

[0004] The main purpose of the present invention is to provide a laser detector for measuring the verticality of an elevator guide rail, which can measure the verticality of the elevator guide rail in real time according to a specific algorithm.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a laser detector for measuring the verticality of an elevator guide rail, characterized in that it includes: Laser ranging vehicle and spot detection vehicle; The laser ranging sensor is arranged at the front of the laser ranging vehicle, and its detection end is directed away from the laser ranging vehicle for detection; The reduction motor, the magnetic wheel and the auxiliary magnetic wheel are located at the bottom of the device, the two magnetic wheels are at a vertical angle, and the reduction motor is only connected to the magnetic wheel; The tilt sensor is placed vertically at the rear of the laser inspection vehicle; Obstacle avoidance sensors are installed at the front and rear ends of the laser ranging vehicle, extending out a certain area; Distortion-free position detection lens, installed in front of the spot detection vehicle; A control circuit board is arranged in the lower area of ​​the interior of the two vehicles and is electrically connected to the laser ranging sensor, the reduction motor, the inclination sensor, the obstacle avoidance sensor and the distortion-free detection lens; The laser detector can measure the area where the elevator guide rail is not completely vertical during installation and use.

[0006] The present invention provides a method for measuring the area of ​​the elevator guide rail that is not completely vertical during installation and use by walking on the guide rail, using the laser detector described in claim 1 to walk on the guide rail to detect the verticality of the elevator guide rail, characterized in that it specifically includes the following steps: Step 1: The two vehicles are adsorbed on the guide rail facing each other, with a certain distance between the two vehicles, and the detection end of the laser ranging sensor is facing the distortion-free position detection camera; Step 2: The control circuit board controls the laser ranging sensor to measure the distance H between the detection end and the measurement target in front of the distortion-free position detection camera; Step 3: After the two vehicles automatically travel a certain distance, the position of the laser in the distortion-free position detection camera will have a deviation E, taking the X-axis deviation of the distortion-free position detection camera as an example; Step 4: The control circuit board calculates the verticality L through the following formula: L=E / H Step 5: The control circuit board calculates the X-axis deviation E by the following formula: E =H1- E 1 Wherein, E is the deviation value taking the X-axis direction as an example, H is the distance between the detection end of the laser ranging sensor and the measurement target in front of the distortion-free position detection camera, L is the verticality of the elevator guide rail, H1 is the distance between the initial position of the laser and the deviation of the laser in the X-axis direction, and E1 is the deviation value caused by the tilt of the laser vehicle in the X-axis direction.

[0007] The present invention also provides a method for measuring position compensation because the error caused by the initial placement state and the installation may cause the laser sensor to be placed in a distortion-free position and the detection camera is not at the midpoint, using the laser detector described in claim 1, specifically comprising the following steps: Step 1: The two vehicles are adsorbed on the guide rail facing each other, with a certain distance between the two vehicles, and the detection end of the laser ranging sensor is facing the distortion-free position detection camera; Step 2: The control circuit board controls the laser ranging sensor to put a point on the distortion-free position detection camera; Step 3: The distance H between the position where the laser point hits the non-distortion position detection camera and the center point position of the non-distortion position detection camera; Step 4: The error E1 caused by the laser car tilting in the X-axis direction is obtained by the following formula: E 1=tan( θ-θ 1)* H Where E1 is the error caused by the laser car tilting in the X-axis direction. θ is the angle value measured by the x-axis inclination sensor, θ 1 is the deviation during installation, which is specifically measured by using the hanging wire method to measure the X-axis offset distance generated by the laser hitting the measurement target in front of the distortion-free position detection camera before leaving the factory, and H is the distance between the detection end of the laser ranging sensor and the measurement target in front of the distortion-free position detection camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a general diagram of the internal structure of the device of Embodiment 1 of the present invention; Figure 2 is a detailed internal diagram of the laser ranging vehicle in the first embodiment of the present invention; Figure 3 is a detailed internal diagram of the light spot detection vehicle in the first embodiment of the present invention; Figure 4 is a measurement principle diagram of the second embodiment of the present invention; Implementation

[0009] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations. Embodiment 1

[0010] like Figure 1 and Figure 2As shown, a laser detector for measuring the verticality of an elevator guide rail comprises a laser ranging vehicle 1, a light spot detection vehicle 2, a laser ranging sensor 3 arranged in front of the laser ranging vehicle and with its detection end facing away from the laser ranging vehicle 1 for detection, a reduction motor 6 located at the bottom of the device together with a magnetic wheel 4 and an auxiliary magnetic wheel 5, a tilt sensor 7 vertically placed in the rear of the laser detection vehicle 1, an obstacle avoidance sensor 8 installed at the front and rear ends of the laser ranging vehicle and extending out of an area, and a sensor 9 installed in the front of the light spot detection vehicle. The distortion-free position detection lens 9 in front is arranged in the lower half area inside the two vehicles, and the control circuit board 10 electrically connected with the laser ranging sensor 3, the reduction motor 6, the inclination sensor 7, the obstacle avoidance sensor 8 and the distortion-free detection lens 9, the magnetic wheel 4 and the auxiliary magnetic wheel 5, the two magnetic wheels are at a vertical angle, the reduction motor 6 is only connected to the magnetic wheel 4, the laser ranging sensor 3 detects in the extension direction away from the laser ranging vehicle 1 and parallel to the guide rail, and the laser ranging vehicle 1 and the spot detection vehicle 2 are placed opposite to each other. The laser ranging sensor 3 can obtain the distance H from the detection end of the laser ranging sensor 3 to the measurement target in front of the distortion-free position detection lens 9. A battery is also arranged in the laser ranging vehicle 1 and the spot detection vehicle 2, and the battery is electrically connected to the control circuit board 10. The two vehicles communicate through the WIFI module. The principle and structure of the lower half walking part of the two vehicles are the same. They are all fixed on the guide rail at a vertical angle between the magnetic wheel and the auxiliary magnetic wheel. Both devices are equipped with charging ports and power switches, and are connected to the control circuit boards of the respective devices. The model of the laser distance sensor 3 is KLH-01T-20hz, and other types or models of controllers may also be used. Embodiment 2

[0011] like Figure 2 As shown, this embodiment uses the detector in the first embodiment to measure the verticality of the elevator guide rail in the incompletely vertical area of ​​the guide rail during installation and use.

[0012] When using the detector, the two vehicles are placed opposite to each other, the laser distance sensor 3 faces the measuring target in front of the distortion-free position detection lens 9, and the control circuit board 10 controls the laser distance sensor 3 through the handheld terminal to detect the distance H between the detection end of the laser distance sensor 3 and the measuring target in front of the distortion-free position detection lens 9, and the verticality L of the elevator guide rail is obtained using the following formula: L=E / H The control circuit board calculates the X-axis deviation E through the following formula: E =H1- E 1 The error E1 caused by the laser car tilting in the X-axis direction is obtained by the following formula: E 1=tan( θ-θ 1)* H Where L is the verticality of the elevator guide rail, H is the distance between the detection end of the laser distance sensor and the measurement target in front of the distortion-free position detection camera, E is the deviation in the X-axis direction, H1 is the distance between the initial position of the laser and the deviation of the laser in the X-axis direction, and E1 is the error caused by the tilt of the laser vehicle in the X-axis direction. θ is the angle value measured by the x-axis inclination sensor, θ 1 is the deviation during installation, which is specifically measured by using the hanging wire method to measure the X-axis offset distance generated by the laser hitting the measurement target in front of the distortion-free position detection camera before leaving the factory.

[0013] The detector is connected to a handheld terminal via WIFI to display measurement results, which at least include verticality and the like.

Claims

1. A laser detector for measuring the verticality of an elevator guide rail, characterized in that: include: Laser ranging vehicle and spot detection vehicle; The laser ranging sensor is arranged at the front of the laser ranging vehicle, and its detection end is directed away from the laser ranging vehicle for detection; The reduction motor, the magnetic wheel and the auxiliary magnetic wheel are located at the bottom of the device, the two magnetic wheels are at a vertical angle, and the reduction motor is only connected to the magnetic wheel; The tilt sensor is placed vertically at the rear of the laser inspection vehicle; Obstacle avoidance sensors are installed at the front and rear ends of the laser ranging vehicle, extending out a certain area; Distortion-free position detection lens, installed in front of the spot detection vehicle; A control circuit board is arranged in the lower area of ​​the interior of the two vehicles and is electrically connected to the laser ranging sensor, the reduction motor, the inclination sensor, the obstacle avoidance sensor and the distortion-free detection lens; The verticality detector can measure the area where the elevator guide rail is not completely vertical during installation and use. The measuring instrument can measure multiple parameters.

2. A method for measuring the area of ​​the elevator guide rail that is not completely vertical during installation and use by walking on the guide rail, using the laser detector described in claim 1, walking on the guide rail to detect the verticality of the elevator guide rail, characterized in that: The specific steps include: Step 1: The two vehicles are adsorbed on the guide rail facing each other, with a certain distance between the two vehicles, and the detection end of the laser ranging sensor is facing the distortion-free position detection camera; Step 2: The control circuit board controls the laser ranging sensor to measure the distance H between the detection end and the measurement target in front of the distortion-free position detection camera; Step 3: After the two vehicles automatically travel a certain distance, the position of the laser in the distortion-free position detection camera will have a deviation E, taking the X-axis deviation of the distortion-free position detection camera as an example; Step 4: The control circuit board calculates the verticality L through the following formula: L = E / H Step 5: The control circuit board calculates the X-axis deviation E by the following formula: E =H1- E 1 Wherein, E is the deviation value taking the X-axis direction as an example, H is the distance between the detection end of the laser ranging sensor and the measurement target in front of the distortion-free position detection camera, L is the verticality of the elevator guide rail, H1 is the distance between the initial position of the laser and the deviation of the laser in the X-axis direction, and E1 is the deviation value caused by the tilt of the laser vehicle in the X-axis direction.

3. A method for position compensation in which the laser sensor is not at the midpoint due to the error caused by the initial placement state and the installation, using the laser detector of claim 1, specifically comprising the following steps: Step 1: The two vehicles are adsorbed on the guide rail facing each other, with a certain distance between the two vehicles, and the detection end of the laser ranging sensor is facing the distortion-free position detection camera; Step 2: The control circuit board controls the laser ranging sensor to put a point on the distortion-free position detection camera; Step 3: The distance H between the position where the laser point hits the distortion-free position detection camera and the center point position of the distortion-free position detection camera; Step 4; The error E1 caused by the tilt of the laser car in the X-axis direction is obtained by the following formula; E1=tan( θ - θ 1)*H Wherein, E1 is the error caused by the tilt of the laser vehicle in the X-axis direction, θ is the angle value measured by the x-axis inclination sensor, θ1 is the deviation during installation, and the specific method of measuring the installation deviation is to use the hanging line method to measure the X-axis offset distance generated by the laser hitting the measurement target in front of the distortion-free position detection camera at the factory, and H is the distance between the detection end of the laser ranging sensor and the measurement target in front of the distortion-free position detection camera.

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