An elevator guide rail installation accuracy detection device and method

Abstract

The present invention relates to an elevator guide rail installation precision detection device, which includes two reference sample lines, two detection brackets and a driving component. The two reference sample lines are respectively arranged on one side of two groups of guide rails, and the reference sample lines are plumb lines. The two detection brackets are respectively slidably connected to the two groups of guide rails, and a detection component is arranged on the detection brackets. The detection component includes a first displacement sensor, a second displacement sensor, a third displacement sensor, a fourth displacement sensor and a fifth displacement sensor for detecting the corresponding distance data between each working surface of the guide rail and the reference sample line. The driving component is used to drive the detection brackets to move on the guide rails. The device has a simple structure, high measurement precision and high measurement efficiency. The present invention also relates to an elevator guide rail installation precision detection method.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator equipment, and particularly to an elevator guide rail installation accuracy detection device and method. Background Art

[0002] For the result determination of elevator installation and commissioning work, the vibration performance of the car operation is a core index, and the installation accuracy of the guide rail is one of the key influencing factors. Therefore, it is necessary to perform accuracy detection on the elevator guide rail during the installation and commissioning process. During the vertical installation of the guide rail in the hoistway and the elevator performance commissioning process, it is necessary to detect the installation accuracy of the corresponding two groups of guide rails. The detection indexes are mainly the perpendicularity, alignment, and gauge of the guide rail. The perpendicularity refers to the linearity of the working surface of the same group of guide rails in the same direction and the parallelism relative to the plumb line. The alignment refers to the parallelism of the working surfaces on the same side of the two groups of guide rails and the axis coincidence degree of the corresponding top surfaces. The gauge refers to the distance between the two groups of guide rails relative to the top surface.

[0003] In traditional detection operations, usually on-site operators use a steel ruler to select points to measure the distance between the working surface of the guide rail and the plumb line, record the data of each measurement point and compare it with the standard value. According to whether the data of each measurement point meets the allowable error standard, it is determined whether the perpendicularity and alignment of the guide rail are qualified. And use a track alignment gauge to select points to measure the distance between the corresponding top surfaces of the two groups of guide rails, record the data of each measurement point and compare it with the standard value. According to whether the data of each measurement point meets the allowable error standard, it is determined whether the gauge of the guide rail is qualified. Such a detection method mainly relies on the operator to manually operate, and reads the data through the human eye, which is prone to errors and has low measurement accuracy. Moreover, through the operator to complete the measurement of multiple data on the entire guide rail, the work intensity is large and the measurement efficiency is low. Summary of the Invention

[0004] Based on this, it is necessary to provide an elevator guide rail installation accuracy detection device with a simple structure, high measurement accuracy, and high measurement efficiency for the problems of low measurement accuracy and low measurement efficiency in the traditional operation of measuring the installation accuracy of elevator guide rails. In addition, an elevator guide rail installation accuracy detection method using the above device for measurement operation is also provided.

[0005] The technical solution is as follows:

[0006] On the one hand, an elevator guide rail installation accuracy detection device is provided, including:

[0007] Two reference lines, the two reference lines are respectively arranged on one side of the two groups of guide rails, and the reference lines are plumb lines;

[0008] Two detection brackets, the two detection brackets are respectively slidably connected to two groups of the guide rails, and a detection component is provided on the detection bracket. The detection component includes a first displacement sensor, a second displacement sensor, a third displacement sensor, a fourth displacement sensor, and a fifth displacement sensor. The direction perpendicular to the side surface of the guide rail is preset as the first direction, and the direction perpendicular to the top surface of the guide rail is preset as the second direction. The first displacement sensor is used to measure the distance between one side surface of the guide rail and the first direction thereof. The second displacement sensor is used to measure the distance between the other side surface of the guide rail and the first direction thereof. The third displacement sensor is used to measure the distance between the top surface of the guide rail and the second direction thereof. The fourth displacement sensor is used to measure the distance between the reference sample line and the first direction thereof. The fifth displacement sensor is used to measure the distance between the reference sample line and the second direction thereof.

[0009] A driving component, which is used to drive the detection bracket to move on the guide rail.

[0010] The technical solution will be further described below:

[0011] In one embodiment, the driving component includes an elevator car, and the detection bracket is fixed on the top surface of the elevator car.

[0012] In one embodiment, the driving component further includes a connecting piece, and the detection bracket is fixed on the top surface of the elevator car through the connecting piece.

[0013] In one embodiment, the connecting piece is set as a magnetic attracting piece, a first magnetic attracting part for magnetic attracting cooperation with the magnetic attracting piece is provided on the top surface of the elevator car, and a second magnetic attracting part for magnetic attracting cooperation with the magnetic attracting piece is provided on the detection bracket.

[0014] In one embodiment, a first roller for slidably connecting with the guide rail is provided on the elevator car, and the rim of the first roller abuts against the side surface of the guide rail; a reflective light band is provided on the shaft rod, and the detection component further includes a photoelectric tachometer arranged towards the reflective light band.

[0015] In one embodiment, a second roller is further provided on the elevator car, and the rim of the second roller abuts against the top surface of the guide rail.

[0016] In one embodiment, the detection component is movably arranged on the detection bracket.

[0017] In one embodiment, an adjustment chute is provided on the detection bracket, and the detection component is slidably arranged in the adjustment chute.

[0018] In one embodiment, the distances between the first displacement sensor, the second displacement sensor, and the third displacement sensor and the corresponding measurement surfaces of the guide rail are set between 10 mm and 100 mm; the distances between the fourth displacement sensor and the fifth displacement sensor and the corresponding reference sample lines are set between 10 mm and 100 mm.

[0019] On the other hand, an elevator guide rail installation accuracy detection method is also provided, which is characterized by including the above elevator guide rail installation accuracy detection device, and further includes the following steps:

[0020] Arrange the reference sample lines on one side of the two groups of guide rails respectively, such that the reference sample lines are vertically downward;

[0021] Slidably connect the detection bracket with the guide rail, and enable the detection bracket to slide relative to the guide rail under the drive of the drive assembly;

[0022] Align the first displacement sensor along the first direction with one side surface of one group of the guide rails, and measure the distance between the one side surface of the guide rail and the first displacement sensor in the first direction, and record it as L a1 ;

[0023] Align the fourth displacement sensor along the first direction with the reference sample line arranged on one side of the corresponding guide rail, and measure the distance between the reference sample line and the fourth displacement sensor in the first direction, and record it as L b1 , and record the horizontal distance between the first displacement sensor and the fourth displacement sensor as a constant K;

[0024] Calculate the distance between the one side surface of the guide rail and the corresponding reference sample line in the first direction as L X1 through the data measured by the first displacement sensor and the fourth displacement sensor, and continuously detect to obtain continuous sampling data L X1 ......L Xn :

[0025] L X1 = L a1 + L b1 + K ......

[0027] L Xn = L an + L bn + K

[0028] Compare the adjacent sampling data before and after to obtain the perpendicularity deviation value L of one side surface of one group of the guide rails △X1 ......L △Xn :

[0029] L △X1 = L X1 - L X2 = (L a1 + L b1 + K) - (L a2 + L b2 + K) = (L a1 + L b1 ) - (L a2 + L b2 ) ......

[0031] L △Xn = (L an + L bn ) - (L a(n+1) + L b(n+1) )

[0032] Compare and analyze the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified; if it exceeds the standard allowable value, it is judged as an unqualified defect point. Moreover, based on the data detected at this moment position, it is provided for the operator to mark this defect point;

[0033] Similarly, record the distance between one side of the other group of the guide rails and the corresponding reference sample line in the first direction as L x1 , then the perpendicularity deviation value of one side of the other group of the guide rails is L △x1 ......L △xn , compare and analyze the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified; if it exceeds the standard allowable value, it is judged as an unqualified defect point. Moreover, based on the data detected at this moment position, it is provided for the operator to mark this defect point;

[0034] Align the second displacement sensor along the first direction with the other side of one group of the guide rails, and measure the distance between the other side of one group of the guide rails and the second displacement sensor in the first direction, and record it as L c1 , record the distance between the second displacement sensor and the fourth displacement sensor in the first direction as a constant G;

[0035] Calculate the distance between the other side of one group of the guide rails and the reference sample line in the first direction as L Y1 through the data measured by the second displacement sensor and the fourth displacement sensor, and continuously detect to obtain continuous sampling data L Y1 ......L Yn :

[0036] L Y1 = L b1 + G - Lc1 ......

[0038] L Yn = L bn + G - L cn

[0039] By comparing the adjacent sampling data before and after, the perpendicularity deviation value L of the other side of one set of the guide rails is obtained ΔY1 ......L △Yn :

[0040] L △Y1 = L Y1 - L Y2 =(L b1 + G - L c1 ) - (L b2 + G - L c2 ) = (L b1 - L c1 ) - (L b2 - L c2 ) ......

[0042] L ΔYn =(L bn - L cn ) - (L b(n+1) - L c(n+1) )

[0043] Compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified; if it exceeds the standard allowable value, it is judged as an unqualified defective point, and based on the data detected at that moment's position, it is used for the operator to mark the defective point;

[0044] Similarly, record the distance between the other side of the other set of the guide rails and the corresponding reference sample line in the first direction as L y1 , then the perpendicularity deviation value of the other side of the other set of the guide rails is L △y1 ......L △yn Compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified; if it exceeds the standard allowable value, it is judged as an unqualified defective point, and based on the data detected at that moment's position, it is used for the operator to mark the defective point;

[0045] Align the third displacement sensor along the second direction with the top surface of one set of the guide rails, and measure the distance between the top surface of the guide rails and the third displacement sensor in the second direction, and record it as L d1; Align the fifth displacement sensor along the second direction with the reference line on one side of the corresponding guide rail, measure the distance between the reference line and the fifth displacement sensor in the second direction, and record it as L e1 , and add the two to obtain the perpendicularity sampling data L of the top surface of one set of guide rails at a certain moment Z1 , continuously detect to obtain continuous sampling data L Z1 ......L Zn :

[0046] L Z1 =L d1 +L e1 ......

[0048] L Zn =L dn -L en

[0049] Compare the adjacent sampling data before and after to obtain the perpendicularity deviation value L of the top surface of one set of the guide rails △Z1 ......L △Zn :

[0050] L ΔZ1 =L Z1 -L Z2 =(L d1 +L e1 )-(L d2 +L e2 ) ......

[0052] L ΔZn =(L dn +L en )-(L d(n+1) +L e(n+1) )

[0053] Compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified; if it exceeds the standard allowable value, it is judged as an unqualified defective point, and based on the data detected at the position at this moment, it is provided for the operator to mark the defective point;

[0054] Similarly, record the perpendicularity sampling data L of the top surface of the other set of the guide rails z1 , then the perpendicularity deviation value of one side surface of the other set of the guide rails is L △z1 ......L △zn, compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified; if it exceeds the standard allowable value, it is judged as an unqualified defect point, and according to the data detected at that moment, it is used for the operator to mark this defect point;

[0055] Calculate the deviation value of the distance between the same-side working surfaces of the two groups of guide rails and the corresponding reference sample line from the distance data between one side of the two groups of guide rails and the corresponding reference sample line, that is, the opposite-degree deviation value of the guide rails, and record it as L △O1 ......L △On :

[0056] L △O1 =L X1 -L x1 ......

[0058] L △On =L Xn -L xn

[0059] , compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified; if it exceeds the standard allowable value, it is judged as an unqualified defect point, and according to the data detected at that moment, it is used for the operator to mark this defect point;

[0060] Similarly, calculate that the opposite-degree deviation value between the other sides of the two groups of guide rails is L △P1 ......L △Pn , the opposite-degree deviation value between the top surfaces of the two groups of guide rails is L △Q1 ......L △Qn , compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified; if it exceeds the standard allowable value, it is judged as an unqualified defect point, and according to the data detected at that moment, it is used for the operator to mark this defect point;

[0061] Record the distance between the top surface of the other group of guide rails measured by the third displacement sensor for detecting the other group of guide rails and the second direction of the corresponding third displacement sensor as L f1 , record the distance between the third displacement sensors of the two groups of guide rails in the second direction as a constant H. After calculation, obtain the distance between the top surfaces of the two groups of guide rails in the second direction at a certain moment, that is, the gauge of the two groups of guide rails, and record it as L R1 , continuously detect to obtain continuous sampling data L R1 ......L Rn :

[0062] LR1 = L d1 + L f1 + H ......

[0064] L Rn = L dn + L fn + H

[0065] By comparing the adjacent sampling data before and after, the gauge deviation values L of the two groups of the guide rails are obtained △R1 ......L ΔRn :

[0066] L △R1 = L R1 - L R2 = (L d1 + L f1 + H) - (L d2 + L f2 + H) = (L d1 + L f1 ) - (L d2 + L f2 ) ......

[0068] L △Rn = (L dn + L fn ) - (L d(n+1) + L f(n+1) )

[0069] Compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is determined to be qualified. If it exceeds the standard allowable value, it is determined to be an unqualified defective point, and according to the data detected at the position at this moment, it is provided for the operator to mark the defective point

[0070] Advantages of the present invention:

[0071] Compared with the prior art, an elevator guide rail installation accuracy detection device of the present invention is provided with two vertically downward reference sample lines, that is, plumb lines, on one side of each of the two groups of guide rails for use as the reference for detection. Then, two detection brackets are respectively slidably connected to the two groups of guide rails, and a detection component is provided on the detection brackets. By driving the detection brackets to slide on the guide rails through a driving mechanism, the detection component can accurately detect the perpendicularity, alignment degree, and gauge of the guide rail installation

[0072] Specifically, the detection component includes a first displacement sensor, a second displacement sensor, a third displacement sensor, a fourth displacement sensor, and a fifth displacement sensor. The direction perpendicular to the side surface of the guide rail is preset as the first direction, and the direction perpendicular to the top surface of the guide rail is preset as the second direction. The first displacement sensor is used to measure the distance between one side surface of the guide rail and the first direction thereof. The second displacement sensor is used to measure the distance between the other side surface of the guide rail and the first direction thereof. The third displacement sensor is used to measure the distance between the top surface of the guide rail and the second direction thereof. The fourth displacement sensor is used to measure the distance between the reference line and the first direction thereof. The fifth displacement sensor is used to measure the distance between the reference line and the second direction thereof.

[0073] Through the above displacement sensors, relevant data is synchronously recorded and processed, and the determination and result display can be automatically completed after the test. Compared with the prior art, the operation of this device is simple, which is beneficial to ensuring the measurement accuracy, improving the efficiency of the detection operation, and greatly reducing the work intensity of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0075] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0076] Figure 1 It is a schematic structural diagram of an elevator guide rail installation accuracy detection device for an embodiment;

[0077] Figure 2 is Figure 1 the installation structure schematic diagram of the detection bracket in;

[0078] Figure 3 is Figure 1 the enlarged schematic diagram of part A in.

[0079] Description of the reference numerals:

[0080] 100, reference line;

[0081] 200, guide rail;

[0082] 300. Detection bracket; 310. First displacement sensor; 320. Second displacement sensor; 330. Third displacement sensor; 340. Fourth displacement sensor; 350. Fifth displacement sensor; 360. Photoelectric tachometer; 370. Adjustment chute;

[0083] 400. Driving assembly; 410. Elevator car; 411. First roller; 412. Shaft rod; 413. Reflective light strip; 414. Second roller; 415. Cross beam; 420. Magnetic part;

[0084] 500. Power supply module;

[0085] 600. Terminal module;

[0086] 700. Control module. Specific implementation manner

[0087] To make the above objects, features, and advantages of the present invention more obvious and understandable, the specific implementation manner of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0088] As Figures 1 to 3 shown, in one embodiment, an installation accuracy detection device for an elevator guide rail 200 is provided, including two reference sample lines 100, two detection brackets 300, and a driving assembly 400. The two reference sample lines 100 are respectively arranged on one side of two groups of guide rails 200, and the reference sample lines 100 are plumb lines. The two detection brackets 300 are respectively slidably connected to the two groups of guide rails 200, and a detection assembly is provided on the detection bracket 300 for detecting various data of the guide rail 200. The driving assembly 400 is used to drive the detection bracket 300 to move on the guide rail 200 so that the detection assembly on the detection bracket 300 can correspondingly detect the data of each point of the guide rail 200.

[0089] By respectively arranging two vertically downward reference sample lines 100, that is, plumb lines, on one side of the two groups of guide rails 200 to be used as the reference for detection. Then, the two detection brackets 300 are respectively slidably connected to the two groups of guide rails 200, and a detection assembly is provided on the detection bracket 300. By driving the detection bracket 300 to slide on the guide rail 200 through a driving mechanism, the detection assembly can accurately detect the perpendicularity, alignment, and gauge of the installation of the guide rail 200.

[0090] Specifically, the detection component includes a first displacement sensor 310, a second displacement sensor 320, a third displacement sensor 330, a fourth displacement sensor 340, and a fifth displacement sensor 350. The direction perpendicular to the side surface of the guide rail 200 is preset as the first direction, and the direction perpendicular to the top surface of the guide rail 200 is preset as the second direction. The first displacement sensor 310 is used to measure the distance between one side surface of the guide rail 200 and the first direction thereof. The second displacement sensor 320 is used to measure the distance between the other side surface of the guide rail 200 and the first direction thereof. The third displacement sensor 330 is used to measure the distance between the top surface of the guide rail 200 and the second direction thereof. The fourth displacement sensor 340 is used to measure the distance between the reference line 100 and the first direction thereof. The fifth displacement sensor 350 is used to measure the distance between the reference line 100 and the second direction thereof.

[0091] Through the above-mentioned displacement sensors, relevant data are synchronously recorded and processed, and the determination and result display can be automatically completed after the test. Compared with the prior art, the operation of this device is simple, which is beneficial to ensuring the measurement accuracy, improving the efficiency of the detection operation, and greatly reducing the working intensity of the operators.

[0092] In this embodiment, it further includes a control module 700, a power supply module 500, and a terminal module 600 that are connected to each other. The control module 700 is also respectively connected to the power supply module 500 and the detection component to control the power supply module 500 to supply power to the detection component and ensure the normal operation of the detection component. Moreover, the control module 700 receives the data recorded by the detection component, processes it, and outputs it to the terminal module 600, so that the operator can view the relevant data analysis on the terminal module 600 and obtain the final detection result. In this embodiment, the terminal is a laptop computer, which can be directly placed on the top surface of the elevator car 410 to receive the data recording and analysis of the control module 700 and the detection component. The control module 700 is arranged on the detection bracket 300 to facilitate receiving the data of the detection component. Moreover, for the convenience of on-site wiring and other operations, the power supply module 500 can also be directly placed on the top surface of the elevator car 410 and connected to the control module 700 and the detection component through wires respectively.

[0093] In one of the embodiments, the driving component 400 includes an elevator car 410, and the detection bracket 300 is fixed on the top surface of the elevator car 410. By controlling the elevator car 410 to slowly run between the guide rails 200 at the maintenance speed, the detection bracket 300 is driven to move relative to the guide rail 200, so that the detection component on the detection bracket 300 can perform data detection on each point of the guide rail 200.

[0094] In one embodiment, the driving assembly 400 further includes a connecting member. The detection bracket 300 is fixed to the top surface of the elevator car 410 through the connecting member, ensuring a stable installation between the detection bracket 300 and the elevator car 410, and avoiding errors in data detection caused by the movement of the detection bracket 300 during operation. Specifically, in one embodiment, the connecting member is provided as a magnetic attracting member 420. The top surface of the elevator car 410 is provided with a first magnetic attracting portion for magnetic attracting cooperation with the magnetic attracting member 420, and the detection bracket 300 is provided with a second magnetic attracting portion for magnetic attracting cooperation with the magnetic attracting member 420. More specifically, in this embodiment, the detection bracket 300 is made of magnetic metal, so that the magnetic attracting member 420 can be directly adsorbed on the outer surface of the detection bracket 300. In addition, the other end of the magnetic attracting member 420 is directly magnetically attracted to the magnetic metal cross beam 415 on the top surface of the elevator car 410, thereby realizing directly fixing and adsorbing the detection bracket 300 on the top surface of the elevator car 410 through the magnetic attracting member 420.

[0095] In one embodiment, the elevator car 410 is provided with a first roller 411 for sliding connection with the guide rail 200, and the rim of the first roller 411 abuts against the side surface of the guide rail 200. A reflective light band 413 is provided on the shaft 412 of the first roller 411, and the reflective light band 413 is attached to the shaft 412 of the guide shoe by bonding. The detection assembly further includes a photoelectric tachometer 360 arranged facing the reflective light band 413. During the operation of the elevator car 410 on the guide rail 200, the linear velocity of the rotation of the shaft 412 is continuously detected by the photoelectric tachometer 360, and multiplied by the running time, the position of the detection bracket 300 on the guide rail 200 can be calculated, so as to further determine the position of each measurement point measured by the detection assembly, which is beneficial to ensuring the measurement accuracy.

[0096] More preferably, in one embodiment, the elevator car 410 is further provided with a second roller 414, and the rim of the second roller 414 abuts against the top surface of the guide rail 200. The second roller 414 is used to assist the elevator car 410 to slide on the guide rail 200, so that the elevator car 410 drives the detection bracket 300 to move more smoothly on the guide rail 200, and avoids the detection bracket 300 shaking during the movement and affecting the detection accuracy of the data.

[0097] In one embodiment, the detection assembly is movably arranged on the detection bracket 300, so that the detection assembly can be adjusted movably to accurately align with the object to be measured. Specifically, in one embodiment, the detection bracket 300 is provided with an adjustment chute 370, and the detection assembly is slidably arranged in the adjustment chute 370. Through the adjustment chute 370, the corresponding detection assembly can be adjusted to the corresponding detection position, which is beneficial to ensuring the accuracy of the detection data.

[0098] In one embodiment, the distances between the first displacement sensor 310, the second displacement sensor 320, and the third displacement sensor 330 and the corresponding measured surfaces of the guide rail 200 are set between 10 mm and 100 mm; the distances between the fourth displacement sensor 340 and the fifth displacement sensor and the corresponding reference line 100 are set between 10 mm and 100 mm. This avoids the displacement sensors touching the object being measured when they are too close, and also avoids inaccurate data measurement due to the displacement sensors being too far from the object being measured, thus ensuring the reliability and accuracy of the detection data. Of course, according to the parameter specifications of the actually used displacement sensors, the distance between the sensors and the object being measured can be specifically adjusted, and it is not limited to the above-set data.

[0099] On the other hand, an elevator guide rail 200 installation accuracy detection method is also provided, including the above-mentioned elevator guide rail 200 installation accuracy detection device, and further including the following steps:

[0100] Arrange the reference line 100 on one side of each of the two groups of guide rails 200 respectively, such that the reference line 100 is vertically downward;

[0101] Slide-connect the detection bracket 300 with the guide rail 200, and enable the detection bracket 300 to slide relative to the guide rail 200 under the drive of the drive assembly 400;

[0102] Align the first displacement sensor 310 along the first direction with one side surface of one group of guide rails 200, and measure the distance between the one side surface of the guide rail 200 and the first displacement sensor 310 in the first direction, and record it as L a1 ;

[0103] Align the fourth displacement sensor 340 along the first direction with the reference line 100 arranged on one side of the corresponding guide rail 200, and measure the distance between the reference line 100 and the fourth displacement sensor 340 in the first direction, and record it as L b1 , and record the horizontal distance between the first displacement sensor 310 and the fourth displacement sensor 340 as a constant K;

[0104] Calculate the distance between the one side surface of the guide rail 200 and the corresponding reference line 100 in the first direction as L through the data measured by the first displacement sensor 310 and the fourth displacement sensor 340 X1 , and continuously detect to obtain continuous sampling data L X1 ......L Xn :

[0105] L X1 =L a1 +L b1 +K ......

[0107] L Xn= L an + L bn + K

[0108] By comparing the adjacent sampling data before and after, the perpendicularity deviation value L of one side of one set of guide rails 200 is obtained △X1 ......L △Xn :

[0109] L △X1 = L X1 - L X2 =(L a1 + L b1 + K)-(L a2 + L b2 + K)=(L a1 + L b1 )-(L a2 + L b2 ) ......

[0111] L △Xn =(L an + L bn )-(L a(n+1) + L b(n+1) )

[0112] Compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified. If it exceeds the standard allowable value, it is judged as an unqualified defective point, and according to the data detected at that moment position, it is provided for the operator to mark the defective point;

[0113] Similarly, record the distance of one side of the other set of guide rails 200 in the first direction from the corresponding reference line 100 as L x1 , then the perpendicularity deviation value of one side of the other set of guide rails 200 is L △x1 ......L △xn , compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified. If it exceeds the standard allowable value, it is judged as an unqualified defective point, and according to the data detected at that moment position, it is provided for the operator to mark the defective point;

[0114] Align the second displacement sensor 320 along the first direction with the other side of one set of guide rails 200, and measure the distance between the other side of one set of guide rails 200 and the second displacement sensor 320 in the first direction, and record it as L c1 Record the distance between the second displacement sensor 320 and the fourth displacement sensor 340 in the first direction as a constant G;

[0115] Calculate the distance L between the other side of one set of guide rails 200 and the reference line 100 in the first direction based on the data measured by the second displacement sensor 320 and the fourth displacement sensor 340 Y1 Continuously detect to obtain continuous sampled data L Y1 ......L Yn :

[0116] L Y1 = L b1 + G - L c1 ......

[0118] L Yn = L bn + G - L cn

[0119] Compare the adjacent sampled data before and after to obtain the perpendicularity deviation value L of the other side of one set of guide rails 200 ΔY1 ......L ΔYn :

[0120] L △Y1 = L Y1 - L Y2 =(L b1 + G - L c1 ) - (L b2 + G - L c2 )=(L b1 - L c1 ) - (L b2 - L c2 ) ......

[0122] L △Yn =(L bn - L cn ) - (L b(n+1) - L c(n+1) )

[0123] Compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified; if it exceeds the standard allowable value, it is judged as an unqualified defective point, and based on the data detected at that moment's position, it is provided for the operator to mark the defective point;

[0124] Similarly, record the distance L between the other side of the other set of guide rails 200 and the corresponding reference line 100 in the first direction y1 Then the perpendicularity deviation value of the other side of the other set of guide rails 200 is L Δy1 ......L Δyn, compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified; if it exceeds the standard allowable value, it is judged as an unqualified defect point, and according to the data detected at the position at this moment, it is used for the operator to mark the defect point;

[0125] Align the third displacement sensor 330 with the top surface of one set of guide rails 200 along the second direction, and measure the distance between the top surface of the guide rail 200 and the third displacement sensor 330 in the second direction, and record it as L d1 ; Align the fifth displacement sensor 350 with the reference line 100 arranged on one side of the corresponding guide rail 200 along the second direction, and measure the distance between the reference line 100 and the fifth displacement sensor 350 in the second direction, and record it as L e1 , add the two to obtain the perpendicularity sampling data L of the top surface of one set of guide rails 200 at a certain moment Z1 , continuously detect to obtain continuous sampling data L Z1 ......L Zn :

[0126] L Z1 =L d1 +L e1 ......

[0128] L Zn =L dn -L en

[0129] Compare the adjacent sampling data before and after to obtain the perpendicularity deviation value L of the top surface of one set of guide rails 200 △ Z1 ......L △Zn :

[0130] L △Z1 =L Z1 -L Z2 =(L d1 +L e1 )-(L d2 +L e2 ) ......

[0132] L △Zn =(L dn +L en )-(L d(n+1) +L e(n+1) )

[0133] Compare and analyze the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified; if it exceeds the standard allowable value, it is judged as an unqualified defect point, and based on the data detected at that moment's position, it is provided for the operator to mark the defect point;

[0134] Similarly, record the perpendicularity sampling data L of the top surface of the other group of guide rails 200 z1 , then the perpendicularity deviation value of one side surface of the other group of guide rails 200 is L △z1 ......L △zn Compare and analyze the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified; if it exceeds the standard allowable value, it is judged as an unqualified defect point, and based on the data detected at that moment's position, it is provided for the operator to mark the defect point;

[0135] Calculate the deviation value of the distance between the same-side working surfaces of the two groups of guide rails 200 and the corresponding reference sample line 100 from the distance data between one side surface of the above two groups of guide rails 200 and the corresponding reference sample line 100, that is, the alignment deviation value of the guide rails 200, and record it as L △O1 ......L △On :

[0136] L △O1 =L X1 -L x1 ......

[0138] L △On =L Xn -L xn

[0139] Compare and analyze the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified; if it exceeds the standard allowable value, it is judged as an unqualified defect point, and based on the data detected at that moment's position, it is provided for the operator to mark the defect point;

[0140] Similarly, calculate that the alignment deviation value between the other side surfaces of the two groups of guide rails 200 is L △P1 ......L △Pn , the alignment deviation value between the top surfaces of the two groups of guide rails 200 is L △Q1 ......L △Qn Compare and analyze the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified; if it exceeds the standard allowable value, it is judged as an unqualified defect point, and based on the data detected at that moment's position, it is provided for the operator to mark the defect point;

[0141] Record the distance L between the top surface of the other set of guide rails 200 measured by the third displacement sensor 330 for detecting the other set of guide rails 200 and the corresponding second direction of the third displacement sensor. f1 Record that the distance between the third displacement sensors 330 of the two sets of guide rails 200 in the second direction is a constant H. After calculation, the distance between the top surfaces of the two sets of guide rails 200 in the second direction at a certain moment, that is, the gauge of the two sets of guide rails 200, is recorded as L. R1 Continuously detect to obtain continuous sampling data L. R1 ......L Rn :

[0142] L R1 = L d1 + L f1 + H ......

[0144] L Rn = L dn + L fn + H

[0145] Compare the adjacent sampling data before and after to obtain the gauge deviation value L of the two sets of guide rails 200. △R1 ......L ΔRn :

[0146] L △R1 = L R1 - L R2 =(L d1 + L f1 + H)-(L d2 + L f2 + H)=(L d1 + L f1 )-(L d2 + L f2 ) ......

[0148] L ΔRn =(L dn + L fn )-(L d(n+1) + L f(n+1) )

[0149] Compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified. If it exceeds the standard allowable value, it is judged as an unqualified defective point, and according to the detection data of the position at this moment, it is provided for the operator to mark the defective point.

[0150] It should be noted that "a certain body" and "a certain part" can be part of the corresponding "component", that is, "a certain body" and "a certain part" are integrally formed with the "other parts of the component"; or they can be an independent component separable from the "other parts of the component", that is, "a certain body" and "a certain part" can be manufactured independently and then combined with the "other parts of the component" to form a whole. The expression of "a certain body" and "a certain part" in this application is only one embodiment for the convenience of reading, rather than a limitation on the protection scope of this application. As long as the above features are included and the functions are the same, it should be understood as an equivalent technical solution of this application.

[0151] It should be noted that the components included in the "unit", "component", "mechanism", and "device" of this application can also be flexibly combined, that is, modular production can be carried out according to actual needs to facilitate modular assembly. The division of the above components in this application is only one embodiment for the convenience of reading, rather than a limitation on the protection scope of this application. As long as the above components are included and the functions are the same, it should be understood as an equivalent technical solution of this application.

[0152] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The term "and / or" used in the present invention includes any and all combinations of one or more of the related listed items.

[0153] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0154] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "joined", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0155] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0156] It should be noted that when an element is referred to as being "fixed to", "arranged on", "secured to" or "mounted on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. Further, when an element is considered to be "fixed and drivingly connected" to another element, the two may be fixed in a detachable connection manner or a non-detachable connection manner, as long as power transmission can be achieved, such as socket connection, snap connection, integral molding fixation, welding, etc., which can be achieved in the prior art and will not be elaborated here. When an element is perpendicular or approximately perpendicular to another element, it means that the ideal state of the two is perpendicular, but due to manufacturing and assembly effects, there may be a certain vertical error. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0157] It should also be understood that when interpreting the connection relationship or position relationship of elements, although not explicitly described, the connection relationship and position relationship are interpreted to include an error range, and this error range should be within the acceptable deviation range of a specific value determined by those skilled in the art. For example, "about", "approximately" or "substantially" may mean within one or more standard deviations, which will not be limited herein.

[0158] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0159] The above embodiments only express several implementation manners of the present invention, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. An elevator guide rail (200) installation accuracy detection device, characterized in that, Including: Two reference sample lines (100), the two reference sample lines (100) are respectively arranged on one side of two groups of guide rails (200), and the reference sample lines (100) are plumb lines; Two detection brackets (300), the two detection brackets (300) are respectively slidably connected with two groups of the guide rails (200), a detection component is arranged on the detection bracket (300), and the detection component includes a first displacement sensor (310), a second displacement sensor (320), a third displacement sensor (330), a fourth displacement sensor (340) and a fifth displacement sensor (350); a direction perpendicular to the side surface of the guide rail (200) is preset as the first direction, and a direction perpendicular to the top surface of the guide rail (200) is preset as the second direction. The first displacement sensor (310) is used to measure the distance between one side surface of the guide rail (200) and the first direction thereof, the second displacement sensor (320) is used to measure the distance between the other side surface of the guide rail (200) and the first direction thereof, the third displacement sensor (330) is used to measure the distance between the top surface of the guide rail (200) and the second direction thereof, the fourth displacement sensor (340) is used to measure the distance between the reference sample line (100) and the first direction thereof, and the fifth displacement sensor (350) is used to measure the distance between the reference sample line (100) and the second direction thereof; A driving component (400) for driving the detection bracket (300) to move on the guide rail (200).

2. An elevator guide rail (200) installation accuracy detection device according to claim 1, characterized in that, The driving component (400) includes an elevator car (410), and the detection bracket (300) is fixed on the top surface of the elevator car (410).

3. An elevator guide rail (200) installation accuracy detection device according to claim 2, characterized in that, The driving component (400) further includes a connecting piece, and the detection bracket (300) is fixed on the top surface of the elevator car (410) through the connecting piece.

4. An elevator guide rail (200) installation accuracy detection device according to claim 3, characterized in that, The connecting piece is arranged as a magnetic attracting piece (420), a first magnetic attracting part for magnetic attracting cooperation with the magnetic attracting piece (420) is arranged on the top surface of the elevator car (410), and a second magnetic attracting part for magnetic attracting cooperation with the magnetic attracting piece (420) is arranged on the detection bracket (300).

5. An elevator guide rail (200) installation accuracy detection device according to claim 3, characterized in that, A first roller (411) for slidably connecting with the guide rail (200) is arranged on the elevator car (410), and the wheel rim of the first roller (411) abuts against the side surface of the guide rail (200); a reflective light band (413) is arranged on the shaft rod (412) of the first roller (411), and the detection component further includes a photoelectric tachometer (360) arranged towards the reflective light band (413).

6. An elevator guide rail (200) installation accuracy detection device according to claim 3, characterized in that, The elevator car (410) further is provided with a second roller (414), and the wheel rim of the second roller (414) abuts against the top surface of the guide rail (200).

7. An elevator guide rail (200) installation accuracy detection device according to claim 1, characterized in that, The detection component is movably arranged on the detection bracket (300).

8. An elevator guide rail (200) installation accuracy detection device according to claim 7, characterized in that, An adjustment sliding groove (370) is arranged on the detection bracket (300), and the detection component is slidably arranged in the adjustment sliding groove (370).

9. An elevator guide rail (200) installation accuracy detection device according to claim 1, characterized in that The distances between the first displacement sensor (310), the second displacement sensor (320), and the third displacement sensor (330) and the corresponding measured surfaces of the guide rail (200) are set between 10 mm and 100 mm; the distances between the fourth displacement sensor (340) and the fifth displacement sensor and the corresponding reference sample line (100) are set between 10 mm and 100 mm.

10. A method for detecting the installation accuracy of an elevator guide rail (200), characterized in that, An elevator guide rail (200) installation accuracy detection device according to any one of claims 1-9 further includes the following steps: Arrange the reference sample line (100) on one side of each of the two groups of guide rails (200) so that the reference sample line (100) is vertically downward. Slidably connect the detection bracket (300) to the guide rail (200) so that the detection bracket (300) can slide relative to the guide rail (200) under the drive of the drive assembly (400). Align the first displacement sensor (310) along the first direction with one side surface of one set of the guide rails (200), and measure the distance between the one side surface of the guide rail (200) and the first displacement sensor (310) in the first direction, and record it as L a1 ; Align the fourth displacement sensor (340) along the first direction with the reference line (100) on one side of the corresponding guide rail (200), and measure the distance between the reference line (100) and the fourth displacement sensor (340) in the first direction, which is recorded as L b1 , record the horizontal distance between the first displacement sensor (310) and the fourth displacement sensor (340) as a constant K; Calculate the distance L between one side of the guide rail (200) and the reference line (100) in the first direction based on the data measured by the first displacement sensor (310) and the fourth displacement sensor (340). X1 Continuously detect to obtain continuous sampled data L X1 ......L Xn : L X1 = L a1 + L b1 + K ...... L Xn = L an + L bn + K By comparing the adjacent sampling data before and after, the perpendicularity deviation value L of one side of one set of the guide rails (200) is obtained △X1 ......L △Xn : L △X1 = L X1 - L X2 =(L a1 + L b1 + K)-(L a2 + L b2 + K)=(L a1 + L b1 )-(L a2 + L b2 ) ...... L △Xn = (L an + L bn ) - (L a(n+1) + L b(n+1) ) Compare and analyze the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is determined to be qualified; if it exceeds the standard allowable value, it is determined to be a non-conforming defect point, and based on the data detected at this moment position, it is provided for the operator to mark this defect point. Similarly, record the distance between one side surface of the other set of the guide rails (200) and the reference sample line (100) in the first direction as L x1 , then the perpendicularity deviation value of one side surface of the other set of the guide rails (200) is L △x1 ......L △xn , compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified. If it exceeds the standard allowable value, it is judged as a defective point, and according to the data detected at the position at this moment, it is used for the operator to mark the defective point; Align the second displacement sensor (320) along a first direction with the other side surface of one set of the guide rails (200), and measure the distance between the other side surface of one set of the guide rails (200) and the second displacement sensor (320) in the first direction, which is recorded as L c1 , and record the distance between the second displacement sensor (320) and the fourth displacement sensor (340) in the first direction as a constant G; Calculate the distance L between the other side of one set of the guide rails (200) and the reference line (100) in the first direction based on the data measured by the second displacement sensor (320) and the fourth displacement sensor (340). Y1 Continuously detect to obtain continuous sampled data L Y1 ......L Yn : L Y1 = L b1 + G - L c1 ...... L Yn = L bn + G - L cn By comparing the adjacent sampling data before and after, the perpendicularity deviation value L of the other side of one group of the guide rails (200) is obtained ΔY1 ......L ΔYn : L △Y1 = L Y1 - L Y2 = (L b1 + G - L c1 ) - (L b2 + G - L c2 ) = (L b1 - L c1 ) - (L b2 - L c2 ) ...... L △Yn = (L bn - L cn ) - (L b(n+1) - L c(n+1) ) Compare and analyze the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is determined to be qualified; if it exceeds the standard allowable value, it is determined to be a non-conforming defect point, and based on the data detected at this moment position, it is provided for the operator to mark this defect point. Similarly, record the distance between the other side of the other set of the guide rails (200) and the reference line (100) in the first direction as L y1 , then the perpendicularity deviation value of the other side of the other set of the guide rails (200) is L △y1 ......L △yn , compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified. If it exceeds the standard allowable value, it is judged as an unqualified defect point, and according to the data detected at the position at this moment, it is used for the operator to mark the defect point; Align the third displacement sensor (330) along the second direction with the top surface of one set of the guide rails (200), and measure the distance between the top surface of the guide rail (200) and the third displacement sensor (330) in the second direction, which is recorded as L d1 ; Align the fifth displacement sensor (350) along the second direction with the reference line (100) arranged on one side of the corresponding guide rail (200), and measure the distance between the reference line (100) and the fifth displacement sensor (350) in the second direction, which is recorded as L e1 , and add the two to obtain the verticality sampling data L of the top surface of one set of the guide rails (200) at a certain moment Z1 , and continuously detect to obtain continuous sampling data L Z1 ......L Zn : L Z1 = L d1 + L e1 ...... L Zn = L dn - L en By comparing the adjacent sampling data before and after, the verticality deviation value L of the top surface of one of the guide rails (200) is obtained △Z1 ......L △Zn : L △Z1 = L Z1 - L Z2 = (L d1 + L e1 ) - (L d2 + L e2 ) ...... L △Zn = (L dn + L en ) - (L d(n+1) + L e(n+1) ) Compare and analyze the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is determined to be qualified; if it exceeds the standard allowable value, it is determined to be a non-conforming defect point, and based on the data detected at this moment position, it is provided for the operator to mark this defect point. Similarly, the perpendicularity sampling data L of the top surface of the other set of the guide rails (200) is recorded. z1 Then, the perpendicularity deviation value of one side surface of the other set of the guide rails (200) is L. △z1 ......L △zn The fluctuation range of this deviation value is compared and analyzed with the standard allowable value. If it does not exceed the standard allowable value, it is judged as qualified. If it exceeds the standard allowable value, it is judged as an unqualified defect point. Moreover, according to the data detected at the position at this moment, the operator is provided with the data for marking the defect point. Calculate the distance data between one side of the two sets of the guide rails (200) and the corresponding reference line (100), and obtain the deviation value of the distance between the working surfaces on the same side of the two sets of the guide rails (200) and the corresponding reference line (100), that is, the opposite degree deviation value of the guide rails (200), and record it as L △O1 ......L △On : L △O1 = L X1 - L x1 ...... L △On = L Xn - L xn Compare and analyze the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is determined to be qualified; if it exceeds the standard allowable value, it is determined to be a non-conforming defect point, and based on the data detected at this moment position, it is provided for the operator to mark this defect point. Similarly, the calculated value of the facing deviation between the other sides of the two groups of the guide rails (200) is L △P1 ......L △Pn , the value of the facing deviation between the top surfaces of the two groups of the guide rails (200) is L △Q1 ......L △Qn , compare the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is determined to be qualified. If it exceeds the standard allowable value, it is determined to be an unqualified defect point, and according to the data detected at the position at this moment, it is used for the operator to mark the defect point; Record the distance L between the top surface of the other set of guide rails (200) measured by the third displacement sensor (330) for detecting the other set of guide rails (200) and the corresponding position in the second direction of the third displacement sensor. f1 Record that the distance between the third displacement sensors (330) of the two sets of guide rails (200) in the second direction is a constant H. Through calculation, obtain the distance between the top surfaces of the two sets of guide rails (200) in the second direction at a certain moment, that is, the gauge of the two sets of guide rails (200), and record it as L. R1 Continuously detect to obtain continuous sampling data L. R1 ......L Rn : L R1 = L d1 + L f1 + H ...... L Rn = L dn + L fn + H By comparing the adjacent sampling data before and after, the gauge deviation values L of the two groups of the guide rails (200) are obtained △R1 ......L △Rn : L △R1 = L R1 -L R2 =(L d1 +L f1 +H)-(L d2 +L f2 +H)=(L d1 +L f1 )-(L d2 +L f2 ) ...... L ΔRn = (L dn + L fn ) - (L d(n+1) + L f(n+1) ) Compare and analyze the fluctuation range of this deviation value with the standard allowable value. If it does not exceed the standard allowable value, it is determined to be qualified; if it exceeds the standard allowable value, it is determined to be a non-conforming defect point, and based on the data detected at this moment position, it is provided for the operator to mark this defect point.

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