A narrow space positioning method based on double-lift measuring device

Abstract

The application discloses a kind of based on double-lift measuring device's narrow space positioning method, belong to construction technical field, when positioning, according to the positioning height, transform double-lift measuring device height, adjust the high operation platform of centering disc ratio measurement simultaneously, rear view external point position, measure distance and direction, measure another point position direction and distance simultaneously, calculate the erection point position coordinate, input calculation coordinate orientation, measure wall point position coordinate, reduce double-lift measuring device to the height of the position needed to be positioned, position the required position;When positioning inspection pipeline, it is positioned by the circular pipeline inspection auxiliary plate.The double-lift measuring device and positioning method of the application do not need to set control point in advance, suitable for narrow space, simple and quick to assemble, flexible to arrange, can be used in rotation, safe and reliable in operation, meet the complex working conditions on site, wide range of adaptation.

Description

Technical Field

[0001] This invention belongs to the field of construction technology and relates to a positioning method, particularly a positioning method for narrow spaces based on a dual-lifting measuring device. Background Technology

[0002] Nuclear power plant areas have numerous buildings with complex internal structures, varying in height and size. The reactor buildings, in particular, often have construction tower cranes installed in the central areas for hoisting purposes. After concrete is poured and before installation, the tower cranes are dismantled, allowing installation work to begin immediately. This creates a limited time window. Additionally, there are many special structures, making the construction process cumbersome. Civil engineering and installation are often carried out simultaneously, the space is narrow, the elevation and depth differences are significant, water accumulation is common, and the environment is complex. Construction control points are frequently disrupted, resulting in repeated work and inconsistent benchmark locations. Furthermore, because pipelines are located at different heights, inspections require frequent platform changes, leading to low labor efficiency. Summary of the Invention

[0003] This invention provides a method for positioning in narrow spaces based on a dual-lifting measuring device, in order to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A method for positioning in narrow spaces based on a dual-lifting measuring device includes the following steps: S1. A dual-lift measuring device is installed in a narrow space, located in the center and securely fixed. The dual-lifting measuring device includes a lifting platform and telescopic points; the lifting platform includes a measuring operation platform that can be raised and lowered; the telescopic points include a centering plate that can be raised and lowered; the measuring operation platform is circular, and the centering plate is located inside the measuring operation platform. S2. Adjust the dual lifting measuring device, raise the centering plate to exceed the obstacle and be in line with the known point, and raise the measuring operation platform to be lower than the centering plate; S3. Set up a total station on the centering plate, measure the azimuth and distance from the total station setting point to two known points, calculate the coordinates of the setting point, and input the coordinate values ​​into the total station. S4. Measure the coordinates of points on the wall in a narrow space; S5. Lower the dual lifting measuring device to a position where the total station can observe the height of the inside and outside of the inspected pipe, and secure it firmly. S6. Calculate the coordinates of the installation point by measuring the orientation and distance from the total station to the two wall points, and input the coordinate values ​​into the total station. S7. Insert the pipe inspection auxiliary plate, marked with a center point and with the same size as the inner diameter of the pipe being inspected, into the opening of the pipe being inspected. Measure the center coordinates of the pipe inspection auxiliary plate to obtain the coordinates of the measurement point at the opening. Insert the pipe inspection auxiliary plate into the inspection area inside the pipe and measure the center coordinates of the pipe inspection auxiliary plate to obtain the coordinates of the measurement point inside the pipe being inspected. S8. Calculate the positional deviations of the pipe opening and the inspection points inside the pipe based on the coordinates of the measurement points, including radius deviation, orientation deviation and elevation deviation. S9. Calculate the concentricity deviation of the inspected pipeline based on the coordinates and positional deviations of the measurement points at the pipe opening and the inspection points inside the pipeline. S10. Measure other detection positions in the narrow space besides the pipe, obtain the coordinates of the measurement points, and calculate the position deviation, including radius deviation, orientation deviation and elevation deviation.

[0005] To optimize the above technical solution, the specific measures also include: Furthermore, in S1, the lifting platform also includes a counterweight concrete base and a hydraulic lifting equipment telescopic outrigger; the counterweight concrete base is fixed on the ground; the hydraulic lifting equipment telescopic outrigger is installed on the counterweight concrete base, and the measuring operation platform is installed on the top of the hydraulic lifting equipment telescopic outrigger, which drives the measuring operation platform to rise and fall; a protective cage is provided on the outside of the measuring operation platform.

[0006] Furthermore, in S1, the telescopic point also includes a sleeve telescopic rod; the sleeve telescopic rod is installed on the center of the counterweight concrete base through a base pre-embedded part, and can extend and retract; the centering plate is fixed to the top of the sleeve telescopic rod.

[0007] Furthermore, in step S2, the measuring operation platform is 1.0 to 1.5 m lower than the centering plate, preferably 1.2 m.

[0008] Furthermore, in S3, the angle between the total station setup point and the two known points is 90±30°.

[0009] Furthermore, in S3, after inputting the coordinate values ​​into the total station, the known points are backsighted again, and the coordinate position of the third known point is checked and deemed acceptable; in S4, at least three wall points are measured; in S6, after inputting the coordinate values ​​into the total station, the wall points are backsighted again, and the coordinate position of the third wall point is checked and deemed acceptable.

[0010] Furthermore, in S7, the pipeline inspection auxiliary plate is equipped with an operating handle, which is fixed at a non-central position on one side of the pipeline inspection auxiliary plate.

[0011] Furthermore, in step S8, the method for calculating the positional deviation is as follows: R = (X) 测 -X 圆心 COSα+(Y) 测 -Y 圆心 SINα; T = -(X) 测 -X 圆心 SINα+(Y) 测 -Y 圆心 COSα; ΔH=Z 测 -Z 中心 ; In the formula, R is the radius from the measuring point (inspecting the pipe) to the center of the structure, T is the azimuth deviation of the measuring point, ΔH is the elevation deviation of the measuring point, α is the azimuth angle from the center of the structure to the measuring point, (X... 测 ,Y 测 Z 测 (X) represents the coordinates of the measurement point. 圆心 ,Y 圆心 Z represents the coordinates of the structure's center point. 中心 To check the design location center elevation of the pipeline.

[0012] Furthermore, in S9, the method for calculating the concentricity deviation is as follows: δ 平面 =T 口 -T 里 ; δ 高程 =Z 口 -Z 里 ; In the formula, δ 平面 δ represents the concentricity deviation of the plane. 高程 T represents the concentricity deviation of the elevation. 口 T represents the orientation deviation of the nozzle. 里 For the orientation deviation of the internal inspection area, Z 口 Z represents the elevation of the pipe opening. 里 The elevation of the internal inspection area.

[0013] Furthermore, in step S10, the method for calculating the positional deviation is as follows: R = (X) 测 -X 圆心 COSα+(Y) 测 -Y 圆心 SINα; T = -(X) 测 -X 圆心 SINα+(Y) 测 -Y 圆心 COSα; In the formula, R is the radius from the measurement point (other detection locations) to the center of the structure, T is the azimuth deviation of the measurement point, α is the azimuth angle from the center of the structure to the measurement point, (X... 测 ,Y 测 Z 测 (X) represents the coordinates of the measurement point. 圆心 ,Y 圆心 ( ) represents the coordinates of the center point of the structure.

[0014] The beneficial effects of this invention are as follows: This invention provides a method for positioning in narrow spaces based on a dual-lifting measuring device. During positioning, the height of the dual-lifting measuring device is adjusted according to the positioning height, while the centering plate is adjusted to be higher than the measuring operation platform. External points are then observed, and their distances and orientations are measured. Simultaneously, the orientation and distance of another point are measured, and the coordinates of the installation point are calculated. These calculated coordinates are input for orientation, and the coordinates of the wall points are measured. The dual-lifting measuring device is then lowered to the required positioning height to locate the desired position. When positioning and inspecting pipes, a circular pipe inspection auxiliary plate assists in positioning. The pipe inspection auxiliary plate, with an added operating handle, extends into the middle of the pipe to locate the inspection area inside the pipe. This method has the following advantages: I. The dual-lifting measuring device of the present invention can be installed quickly and is also applicable to environments where the base plate is wet. The dual-lifting measuring device 3 and the positioning method do not require the pre-setting of control points.

[0015] 2. It can be applied both before and after concrete pouring. Before concrete pouring, the operation is generally carried out from bottom to top, and after concrete pouring, the operation is carried out from top to bottom.

[0016] Third, the location of the pipe opening can be checked, and the inside of the pipe can also be inspected, allowing for a comprehensive evaluation of the overall quality.

[0017] IV. The dual-lifting measuring device allows for height adjustment based on the measurement point requirements. Utilizing an automatically lifting measuring platform, operators can remotely adjust the platform's height, effectively solving problems such as obstructed visibility, repeated platform setup and disassembly, and high manpower and material costs. This device improves operational accuracy, shortens operation time, reduces labor intensity, and increases work efficiency. It is flexible, simple, reusable, environmentally friendly, and low-cost. Applicable to various complex construction environments, it has a wide range of applications, strong promotion potential, is stable and reliable, scientifically advanced, and convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall location plan; Figure 2 This is a plan view of the positioning center. Figure 3 This is a schematic diagram of the elevation of the central location; Figure 4 This is a schematic diagram of a pipeline inspection auxiliary device; The markings in the attached diagram are as follows: 1. Central ring wall; 2-1. Factory wall point I; 2-2. Factory wall point II; 2-3. Factory wall point III; 3. Double lifting measuring device; 31. Lifting platform; 311. Measuring operation platform; 312. Counterweight concrete base; 313. Telescopic outrigger of hydraulic lifting equipment; 314. Guard cage; 32. Telescopic point; 321. Centering plate; 322. Sleeve telescopic rod; 4-1. Wall point I; 4-2. Wall point II; 4-3. Wall point III; 4-4. Wall point IV; 51. Pipe inspection auxiliary plate; 511. Connection hole; 52. Operating handle; 521. Nut; 6. Inspection pipe. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] The coordinates of the center point of the reactor building in this embodiment are (A1704.900, B566.100). The central ring wall 1 is located in a narrow circular area with a large elevation difference, with an inner radius of 2.08 m, an outer radius of 3.50 m, and a height of 8.45 m. The center azimuth of the inspection pipe is 45°, and the design elevation of the center of the inspection pipe 6 is 3.260 m. The coordinates of the building wall point I 2-1 are (A1722.8909, B566.0756), the coordinates of the building wall point II 2-2 are (A1704.7912, B548.0956), and the coordinates of the building wall point III 2-3 are (A1704.9125, B583.0056).

[0021] This embodiment provides a method for positioning in narrow spaces based on a dual-lifting measuring device, including the following steps: S1. Install a double lifting measuring device 3 in the space of the factory floor, with the position located in the center and fixed firmly; like Figures 1-3 As shown, the dual-lifting measuring device 3 includes a lifting platform 31 and a telescopic point 32. The lifting platform 31 includes a lifting and lowering measuring operation platform 311. The telescopic point 32 includes a lifting and lowering centering plate 321. The measuring operation platform 311 is annular, and the centering plate 321 is located within the measuring operation platform 311.

[0022] Specifically, the lifting platform 31 also includes a counterweight concrete base 312 and a hydraulic lifting equipment telescopic outrigger 313. The counterweight concrete base 312 is fixed to the ground. The hydraulic lifting equipment telescopic outrigger 313 is installed on the counterweight concrete base 312, and the measuring operation platform is installed on top of the hydraulic lifting equipment telescopic outrigger 313. The hydraulic lifting equipment telescopic outrigger 313 drives the measuring operation platform to rise and fall. A protective cage 314 is provided on the outer side of the measuring operation platform 311.

[0023] The telescopic point 32 also includes a sleeve telescopic rod 322. The sleeve telescopic rod 322 is vertically mounted on the counterweight concrete base 312 of the lifting platform 31 and is telescopic. The centering plate 321 is fixed to the top of the sleeve telescopic rod 322.

[0024] S2, the rising double lifting measuring device 3, the center plate 321 can be observed at the back sight point after it exceeds the platform plate obstruction, and the measuring operation platform 311 is raised to 1.2 m lower than the center plate 321.

[0025] S3. Set up a total station on the centering plate 321. Measure the azimuth of the set-up point II (known point) 2-2 (A1704.7912, B548.0956) on the factory wall as 12°23′35.2″ and the distance as 18.0071m. Measure the azimuth of another factory wall point I (known point) 2-1 (A1722.8909, B566.0756) as 102°38′51.4″ and the distance as 17.9929m. The coordinates of the installation points were calculated to be (A1704.8980, B566.1020). These coordinates were then input into the total station. The factory wall point II2-2 (A1704.7912, B548.0956) was backsighted, and the azimuth was set to 269°39′36.6″. The azimuth of factory wall point I2-1 (A1722.8909, B566.0756) was checked to be 359°54′54.8″, which was found to be acceptable. The factory wall point III2-3 (A1704.9125, B5830056) was checked, and the measured coordinates were (A1704.9131, B583.0057), which met the requirements.

[0026] S4. Mark the wall locations in the narrow space using reflective cross marks, and measure the following four locations: Wall point I 4-1 (A1706.9702, B565.8608), Wall point II 4-2 (A1705.2263, B568.1572), Wall point III 4-3 (A11702.8661, B566.5493), and Wall point IV 4-4 (A1704.5463, B564.0484).

[0027] S5, the lowering double lifting measuring device 3 is at an elevation of approximately 3.260m to the center of the total station, enabling observation of the height of the inside and outside of the inspected pipeline, and is securely fixed.

[0028] S6. Measure the azimuth of wall point IV 4-4 (A1704.5463, B564.0484) at 10°00′45.4″ and the distance at 2.0820m. Simultaneously measure the azimuth of wall point I 4-1 (A1706.9702, B565.8608) at 103°15′36.4″ and the distance at 2.0818m. Calculate the coordinates of the erection point (A1704.9021, B566.0998), input the coordinate values ​​into the total station, and backsight the wall point IV 4-4 (A1704.5463, B564.0484) to 260°09′37.3″. Check wall point II. 4-2 (A1705.2263, B568.1572), the measured coordinates are (A1705.2258, B568.1576), which meet the requirements.

[0029] S7. Use a pipeline inspection auxiliary device to locate and inspect pipeline 6. For example... Figure 4 As shown, the pipeline inspection auxiliary device includes a pipeline inspection auxiliary plate 51 and an operating handle 52. The pipeline inspection auxiliary plate 51 is a circular plate that matches the cross-section of the pipeline to be inspected, and has a through connection hole 511 at a non-central location. The end of the operating handle 52 passes through the connection hole 511 and is fixed to a non-central location on one side of the pipeline inspection auxiliary plate 51 by a nut 521. The operating handle 52 facilitates inserting the pipeline inspection auxiliary plate 51 into the inspection area inside the pipeline.

[0030] Insert the pipe inspection auxiliary plate 51 into the opening of the pipe 6 to inspect it, and measure the center coordinates of the pipe inspection auxiliary plate 5 (A1706.3726, B567.5711, Z3.2622). Insert the pipe inspection auxiliary plate 5 into the inspection part inside the pipe 6 through the operating handle 52, and measure the center coordinates of the pipe inspection auxiliary plate 51 (A1706.9654, B568.1635, Z3.2615).

[0031] S8. Calculate and check the positional deviation of pipe 6: R 口 =(1706.3726-1704.9000)COS45°+(567.5711-566.100)SIN45°=2.0815; T 口 =-(1706.3726-1704.9000)SIN45°+(567.5711-566.100)COS45°=-0.0011m; ΔH 口 =3.2622-3.260=0.0022m; R 里=(1706.9654-1704.9000)COS45°+(568.1635-566.100)SIN45°=2.9196m; T 里 =-(1706.9654-1704.9000)SIN45°+(568.1635-566.100)COS45°=-0.0013m; ΔH 里 =3.2615 - 3.260 = 0.0015m; In the formula, R 口 T is the radius from the nozzle to the center of the reactor building. 口 The orientation deviation of the pipe opening, ΔH 口 R represents the elevation deviation of the pipe opening. 里 T is the radius from the inspection point inside the pipeline to the center of the reactor building. 里 ΔH represents the orientation deviation of the inspection area inside the pipeline. 里 The elevation deviation of the inspection section inside the pipeline is 45°, which is the azimuth angle from the center of the reactor building to the inspection pipeline 6. (A1704.900, B566.100) are the coordinates of the center point of the reactor building, and 3.260 m is the design elevation of the center of the inspection pipeline 6.

[0032] S9. Calculate and inspect the concentricity deviation of pipe 6: δ 平面 =-0.0011-(-0.0013)=0.0002m; δ 高程 =3.2622-3.2615=0.0007m; In the formula, δ 平面 δ represents the concentricity deviation of the plane. 高程 This refers to the concentricity deviation of the elevation.

[0033] The concentricity deviation is less than 1mm, which meets the quality requirements.

[0034] S10. Measure the 22.5° azimuth of the wall layout: Measure the coordinates (A1706.8235, B566.8907) near the 22.5° position on the wall. R 墙 =(1706.8235-1704.9000)COS22.5°+(566.8907-566.100)SIN22.5°=2.0797; T 墙=-(1706.8235-1704.9000)SIN22.5°+(566.8907-566.100)COS22.5°=-0.0055m; Move 5mm clockwise and remeasure the coordinates (A1706.8217, B566.8951). R 墙 =(1706.8217-1704.9000)COS22.5°+(566.8951-566.100)SIN22.5°=2.0797; T 墙 =-(1706.8217-1704.9000)SIN22.5°+(566.8951-566.100)COS22.5°=-0.0008m; Once the requirements are met, the location is marked and other directions are determined.

[0035] In this invention, unless otherwise stated, scientific and technical terms used herein have the meanings commonly understood by those skilled in the art.

[0036] It should be noted that the terms such as "upper", "lower", "left", "right", "front", and "back" used in the invention are only for clarity of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0037] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for positioning in a narrow space based on a dual-lifting measuring device, characterized in that: Includes the following steps: S1. A dual-lift measuring device is installed in a narrow space, with its position located in the center. The dual-lifting measuring device includes a lifting platform and telescopic points; the lifting platform includes a measuring operation platform that can be raised and lowered; the telescopic points include a centering plate that can be raised and lowered; the measuring operation platform is circular, and the centering plate is located inside the measuring operation platform. S2. Adjust the dual lifting measuring device, raise the centering plate until it exceeds the obstacle and is in line with the known point, and raise the measuring operation platform until it is lower than the centering plate; S3. Set up a total station on the centering plate, measure the azimuth and distance from the total station setting point to two known points, calculate the coordinates of the setting point, and input the coordinate values ​​into the total station. S4. Measure the coordinates of points on the wall in a narrow space; S5. Lower the dual lifting measuring device until the total station can observe the height of the inside and outside of the inspected pipe; S6. Calculate the coordinates of the installation point by measuring the orientation and distance from the total station to the two wall points, and input the coordinate values ​​into the total station. S7. Insert the pipe inspection auxiliary plate, marked with a center point and with the same size as the inner diameter of the pipe being inspected, into the opening of the pipe being inspected. Measure the center coordinates of the pipe inspection auxiliary plate to obtain the coordinates of the measurement point at the opening. Insert the pipe inspection auxiliary plate into the inspection area inside the pipe and measure the center coordinates of the pipe inspection auxiliary plate to obtain the coordinates of the measurement point inside the pipe being inspected. S8. Calculate the positional deviations of the pipe opening and the inspection area inside the pipe based on the coordinates of the measurement points, including the radius from the measurement point to the center of the structure, the azimuth deviation of the measurement point, and the elevation deviation of the measurement point. S9. Calculate the concentricity deviation of the inspected pipeline based on the coordinates and positional deviations of the measurement points at the pipe opening and the inspection points inside the pipeline. S10. Measure other detection positions in the narrow space besides the pipe, obtain the coordinates of the measurement points, and calculate the positional deviation, including the radius from the measurement point to the center of the structure and the orientation deviation of the measurement point.

2. The narrow space positioning method based on a dual-lifting measuring device according to claim 1, characterized in that: In S1, the lifting platform also includes a counterweight concrete base and telescopic outriggers of the hydraulic lifting equipment; A counterweight concrete base is fixed to the ground; The telescopic outriggers of the hydraulic lifting equipment are installed on a counterweight concrete base, and the measuring operation platform is installed on top of the telescopic outriggers of the hydraulic lifting equipment. The telescopic outriggers of the hydraulic lifting equipment drive the measuring operation platform to rise and fall. A protective cage is installed around the outside of the measurement operation platform.

3. The narrow space positioning method based on a dual-lifting measuring device according to claim 2, characterized in that: In S1, the telescopic point also includes a sleeve telescopic rod; The sleeve telescopic rod is installed in the center of the counterweight concrete base through the base embedded part, and can extend and retract; the centering plate is fixed at the top of the sleeve telescopic rod.

4. The narrow space positioning method based on a dual-lifting measuring device according to claim 1, characterized in that: In step S2, the measurement operation platform is 1.0 to 1.5 m lower than the centering plate.

5. The narrow space positioning method based on a dual-lifting measuring device according to claim 1, characterized in that: In S3, the angle between the total station setup point and the two known points is 90±30°.

6. The narrow space positioning method based on a dual-lifting measuring device according to claim 1, characterized in that: In step S3, after inputting the coordinate values ​​into the total station, the known points are backsighted again to check the coordinate position of the third known point and ensure it is qualified. In step S4, at least three wall points are measured; in step S6, after inputting the coordinate values ​​into the total station, the wall points are backsighted again, and the coordinate position of the third wall point is checked and verified to be qualified.

7. The narrow space positioning method based on a dual-lifting measuring device according to claim 1, characterized in that: In S7, the pipeline inspection auxiliary plate is equipped with an operating handle, which is fixed at a non-central position on one side of the pipeline inspection auxiliary plate.

8. The narrow space positioning method based on a dual-lifting measuring device according to claim 1, characterized in that: In step S8, the method for calculating the position deviation is as follows: R=(X 测 -X 圆心 )COSα+(Y 测 -Y 圆心 )SINα; T=-(X 测 -X 圆心 )SINα+(Y 测 -Y 圆心 )COSα; ΔH=Z 测 -Z 中心 ; In the formula, R is the radius from the measurement point to the center of the structure, T is the azimuth deviation of the measurement point, ΔH is the elevation deviation of the measurement point, α is the azimuth angle from the center of the structure to the measurement point, (X 测 ,Y 测 Z 测 (X) represents the coordinates of the measurement point. 圆心 ,Y 圆心 Z represents the coordinates of the structure's center point. 中心 To check the design location center elevation of the pipeline.

9. The narrow space positioning method based on a dual-lifting measuring device according to claim 1, characterized in that: In S9, the method for calculating the concentricity deviation is as follows: δ 平面 =T 口 -T 里 ; δ 高程 =Z 口 -WITH 里 ; In the formula, δ 平面 δ represents the concentricity deviation of the plane. 高程 T represents the concentricity deviation of the elevation. 口 T represents the orientation deviation of the nozzle. 里 For the orientation deviation of the internal inspection area, Z 口 Z represents the elevation of the pipe opening. 里 The elevation of the internal inspection area.

10. The narrow space positioning method based on a dual-lifting measuring device according to claim 1, characterized in that: In step S10, the method for calculating the position deviation is as follows: R=(X 测 -X 圆心 )COSα+(Y 测 -Y 圆心 )SINα; T=-(X 测 -X 圆心 )SINα+(Y 测 -Y 圆心 )COSα; In the formula, R is the radius from the measurement point to the center of the structure, T is the azimuth deviation of the measurement point, α is the azimuth angle from the center of the structure to the measurement point, (X... 测 ,Y 测 Z 测 (X) represents the coordinates of the measurement point. 圆心 ,Y 圆心 ( ) represents the coordinates of the center point of the structure.

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