Roller positioning measurement method

Abstract

The present invention provides a roller positioning and measuring method, which relates to the technical field of equipment installation. The method comprises: collecting reference point data, selecting collection points on the roller and collecting the design coordinates of the collection points. According to the reference point data, a total station is used to establish a coordinate station. The accuracy of the station establishment is confirmed. A frame is installed on the top of the roller, and the frame is leveled for installing a target rod. The target rod is inserted into the frame, the bottom of the target rod is against the surface of the roller, and a prism is installed on the top of the target rod. The three-dimensional coordinates of the collection point are measured by the total station to obtain the collection coordinates. The collection coordinates are compared with the design coordinates, and the first difference between the collection coordinates and the design coordinates is calculated. The roller position is adjusted according to the first difference to complete the positioning of the roller. The method is simple to operate, avoids the problems of wire rack hanging and human errors in measurement in the traditional method, improves the measurement accuracy, and realizes the precision control of the roller equipment.

Description

Technical Field

[0001] The invention relates to the technical field of equipment installation, and in particular to a roller positioning and measuring method. Background Art

[0002] In the current metallurgical machinery and equipment installation projects, there are many designed rollers on the rolling line. Due to the strong connection and integrity of the equipment on the rolling line and the high installation accuracy requirements, the lateral and longitudinal accuracy requirements of the rollers are relatively high.

[0003] The roller is usually positioned by hanging a lead pendant on a wire frame. Multiple wire frames are required to control multiple rollers. The measurement cost is high and the error rate is high. It is difficult to control the integrity of the roller positioning. In addition, the environment requirements are high and the measurement needs to be carried out in a windless environment. It is also difficult to position and measure the roller during subsequent inspections and repairs. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a roller positioning measurement method to solve the above-mentioned problem.

[0005] Based on the above purpose, the present invention provides a roller positioning measurement method, which is performed according to the following steps:

[0006] S1. Collect reference point data, select collection points on the roller and collect the design coordinates of the collection points.

[0007] S2. Based on the benchmark point data, use a total station to establish coordinates.

[0008] S3. Confirm the accuracy of the website establishment.

[0009] S4. Install a frame on the top of the roller and level the frame for installing the target rod.

[0010] S5. Install the target rod on the frame, with the bottom of the target rod abutting against the surface of the roller, and install the prism on the top of the target rod.

[0011] S6. Measure the three-dimensional coordinates of the collection points using a total station to obtain the collection coordinates.

[0012] S7, comparing the collected coordinates with the designed coordinates, calculating a first difference between the collected coordinates and the designed coordinates, adjusting the position of the roller according to the first difference, and completing the positioning of the roller.

[0013] Compared with the prior art, the beneficial effect of the present invention is that: the prism is installed on the roller, and then the position of the roller is measured by a total station, the measured coordinates are compared with the designed coordinates, and the roller is adjusted to the designed position. The present invention uses a frame, a target rod and a prism to replace the wire frame, which can be reused to reduce construction costs. The method is simple to operate and can directly obtain the coordinate data of the center of the roller, avoiding the problems of wire frame hanging in the traditional method and human errors in measurement, improving the measurement accuracy, and realizing the precision control of the roller equipment.

[0014] Furthermore, after S1, the step further includes: measuring the distance from the center of the prism to the bottom end of the target pole by using a trigonometric height measurement method.

[0015] Furthermore, the specific steps of S2 include: the reference point includes a first reference point and a second reference point, the total station is placed on the first reference point, and the second reference point is viewed from behind to complete the coordinate station establishment.

[0016] Furthermore, the specific steps of S3 include: obtaining the error range and known elevation point data, the known elevation point data including the known elevation point elevation; placing the frame on the known elevation point, and installing the target pole on the frame, and installing the prism on the top of the target pole; measuring the height difference between the center of the prism and the center of the total station measuring head by a total station to obtain the height difference; setting the elevation in the total station to the sum of the height difference and the elevation of the known elevation point, and setting the instrument height and the prism height to zero; measuring the known elevation point by the total station to obtain the measured elevation; calculating the second difference between the measured elevation and the elevation of the known elevation point, and when the second difference is within the error range, the station establishment accuracy meets the requirements.

[0017] Furthermore, the frame includes a horizontal platform and side panels. A through hole is opened on the horizontal platform. The two sides of the bottom of the horizontal platform are respectively connected to the inclined side panels. A groove is opened on the upper surface of the horizontal platform. The groove is perpendicular to the side of the horizontal platform connected to the side of the side panel, and a spirit level is installed in the groove.

[0018] Furthermore, the target rod includes a straight rod and a connecting head. The straight rod is inserted into the through hole. The straight rod is perpendicular to the upper surface of the horizontal platform. The bottom of the straight rod is a tip structure. The top of the straight rod is connected to the connecting head. A magnetized mounting groove is provided on the top of the connecting head for mounting a prism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the installation of a roller positioning measurement method provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of a frame of a method for measuring roll positioning provided by an embodiment of the present invention;

[0021] Figure 3A schematic diagram of a target bar for a roller positioning measurement method provided by an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of trigonometric height measurement of a roller positioning measurement method provided by an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of confirming the station accuracy of the roller positioning measurement method provided in an embodiment of the present invention.

[0024] The markings in the figure are: 1. frame; 2. target pole; 3. horizontal platform; 4. side panel; 5. through hole; 6. groove; 7. level tube; 8. straight rod; 9. connector; 10. mounting groove; 11. prism; 12. slot; 13. first locking screw; 14. second locking screw; 15. roller; 16. reference surface; 17. total station. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0026] like Figure 1 As shown, a roller positioning measurement method proposed by the present invention is performed according to the following steps:

[0027] S1. Collecting reference point data, including the three-dimensional coordinates of the reference point data. Selecting collection points on the roller 15 and collecting the design coordinates of the collection points according to the design drawings of the equipment, sorting out the spatial position data and the radius of each roller 15 in the design drawings.

[0028] like Figure 2 As shown, the frame 1 is composed of a horizontal platform 3 and side panels 4. The two sides of the bottom of the horizontal platform 3 are respectively connected with inclined side panels 4. The angle between the two side panels 4 is degrees, so that the frame 1 presents an inverted "V" tensile structure. A groove 6 is provided on the upper surface of the horizontal platform 3. The groove 6 is perpendicular to the side of the horizontal platform 3 connected to the side panel 4. The level tube 7 is fixedly installed in the groove 6 with screws. A vertical through hole 5 is provided on the horizontal platform 3. The through hole 5 is centered on the left and right. A first threaded hole is provided on the horizontal platform 3. The first threaded hole is perpendicular to the through hole 5 and communicates with the through hole 5. The first threaded hole is threadedly connected with a first locking screw 13. The target rod 2 is fixed by tightening the first locking screw 13. A groove 12 is provided at the bottom of the horizontal table 3, and the groove 12 is parallel to the side of the horizontal table 3 connected to the side plate 4, and the length of the groove 12 is equal to the length of the side of the horizontal table 3 connected to the side plate 4, and the depth of the groove 12 is greater than the difference between the radius of the minimum circle tangent to the two side plates 4 and the chord-center distance value. This prevents the roller 15 from abutting against the bottom surface of the horizontal table 3, which affects the accuracy of the measurement.

[0029] like Figure 3As shown, the target rod 2 is composed of a straight rod 8 and a connector 9. The straight rod 8 is inserted into the through hole 5, and the diameter of the straight rod 8 is slightly smaller than the diameter of the through hole 5. The straight rod 8 is perpendicular to the upper surface of the horizontal platform 3, and the bottom of the straight rod 8 is a tip structure for abutting against the roller 15. The top of the straight rod 8 is connected to the connector 9, and a magnetized mounting groove 10 is provided on the top of the connector 9. A magnet can also be installed at the bottom of the mounting groove 10 to fix the prism 11 or the target ball of the laser tracker. A second threaded hole is provided on the connector 9, and the second threaded hole is perpendicular to the mounting groove 10 and communicates with the mounting groove 10. A second locking screw 14 is threadedly connected to the second threaded hole.

[0030] Place the frame 1 on the ground, install the target pole 2 on the frame 1, and install the prism 11 on the target pole 2. Measure the distance from the center of the prism 11 to the bottom of the target pole 2 by trigonometric height measurement, that is, the occupied height. Figure 4 As shown, the horizontal distance from the measuring head of the measuring instrument to the center of the prism 11 is S, the height difference between the center of the prism 11 and the measuring head of the measuring instrument is h, the height difference between the bottom end of the target rod 2 and the measuring head is H, the angle between the measuring head and the center of the prism 11 is a1, the angle between the measuring head and the bottom end of the target rod 2 is a2, and the occupied elevation is m. Among them, the angle a1, the angle a2 and the horizontal distance S are all directly measured, and the value of m can be calculated by the formula h=S×tana1,H=S×tana2,m=Hh.

[0031] S2, the reference point includes a first reference point and a second reference point. The total station 17 is placed on the first reference point for centering and leveling, and the second reference point is viewed from behind to complete the coordinate station establishment.

[0032] S3, obtaining the error range and the known elevation point data, the known elevation point data including the known elevation point elevation. The total station 17 is set up on the ground, and the elevation of the location of the total station 17 is unknown. The frame 1 is placed on the known elevation point, and the target rod 2 is installed on the frame 1, and the prism 11 is installed on the target rod 2.

[0033] like Figure 5As shown, the horizontal distance between the center of the measuring head of the total station 17 and the center of the prism 11 is recorded as L, the elevation of the location of the total station 17 is recorded as HA, the elevation of the known elevation point of the frame 1 is recorded as HB, the distance from the center of the prism 11 to the bottom of the target rod 2 is recorded as i, the height difference between the center of the prism 11 and the center of the measuring head of the total station 17 is recorded as v, the angle between the measuring head of the total station 17 and the center of the prism 11 is recorded as a, and the height of the total station 17 is recorded as k. By measuring the horizontal distance L and the angle a by the total station 17, v=Ltana can be obtained. The elevation is the height from the reference plane 16, so HA+k=HB+i+v, where v and HB are both known, so HA+ki=HB+v=W, W is a fixed value. After measuring the height difference v by the total station 17, the value of W is calculated. At this time, the parameters in the total station 17 are arbitrary values ​​and do not need to be set. Then set the parameters in the total station 17, set the elevation to W, and set the instrument height and the prism 11 height to zero. Measure the known elevation point with the total station 17 to obtain the measured elevation. Calculate the second difference between the measured elevation and the elevation of the known elevation point. When the second difference is within the error range, the station accuracy meets the requirements.

[0034] S4. Install the frame 1 on the top of the roller 15 and level the frame 1 with the level pipe 7.

[0035] S5, the target rod 2 is installed on the frame 1, the bottom of the target rod 2 is against the surface of the roller 15, and the first locking screw 13 is tightened to fix the target rod 2. The prism 11 is installed on the top of the target rod 2, and the second locking screw 14 is tightened to fix the prism 11.

[0036] S6. The height of the prism 11 in the total station 17 is set to the radius of the roller 15, and the three-dimensional coordinates of the collection point are measured by the total station 17 to obtain the collection coordinates.

[0037] S7, comparing the collected coordinates with the designed coordinates, calculating a first difference between the collected coordinates and the designed coordinates, adjusting the position of the roller 15 according to the first difference, and completing the positioning of the roller 15.

[0038] Therefore, the present invention uses the frame 1, the target rod 2 and the prism 11 to replace the wire frame, which can be reused and reduce the construction cost. The method is simple to operate and can directly obtain the coordinate data of the center of the roller 15, avoiding the problems of wire frame hanging and human errors in measurement in the traditional method, improving the measurement accuracy and realizing the precision control of the roller 15 equipment.

[0039] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A roller positioning measurement method, characterized in that: Follow these steps: S1. Collect reference point data, select collection points on the roll and collect the design coordinates of the collection points; S2. Use total station to build coordinates based on benchmark data; S3. Confirm the accuracy of the site building. The specific steps include: Obtaining the error range and known elevation point data, wherein the known elevation point data includes the elevation of the known elevation point; Place the frame at a known elevation point, install the target pole on the frame, and install the prism on the top of the target pole; The height difference between the center of the prism and the center of the measuring head of the total station is measured by the total station to obtain the height difference value; In the total station, the elevation is set to the sum of the height difference and the elevation of the known elevation point, and the instrument height and prism height are both set to zero; The known elevation points are measured by total station to obtain the measured elevation; Calculate the second difference between the measured elevation and the known elevation point elevation. When the second difference is within the error range, the station accuracy meets the requirements. S4. Install a frame on the top of the roller and level the frame for installing the target rod; the frame includes a horizontal platform and side plates, a through hole is provided on the horizontal platform, two sides of the bottom of the horizontal platform are respectively connected with inclined side plates, a groove is provided on the upper surface of the horizontal platform, the groove is perpendicular to the side of the horizontal platform connected with the side plate, and a level tube is installed in the groove; S5. Install the target rod on the frame, with the bottom of the target rod against the surface of the roller, and install the prism on the top of the target rod; the target rod includes a straight rod and a connector, the straight rod is installed in the through hole, the straight rod is perpendicular to the upper surface of the horizontal platform, the bottom of the straight rod is a tip structure, the top of the straight rod is connected to the connector, and the top of the connector is provided with a magnetized installation groove for installing the prism; S6. Measure the three-dimensional coordinates of the collection points by using a total station to obtain collection coordinates; S7, comparing the collected coordinates with the designed coordinates, calculating a first difference between the collected coordinates and the designed coordinates, adjusting the position of the roller according to the first difference, and completing the positioning of the roller.

2. The roller positioning measurement method according to claim 1, characterized in that: S1 also includes: measuring the distance from the center of the prism to the bottom end of the target pole by using a trigonometric height measurement method.

3. The roller positioning measurement method according to claim 1, characterized in that: The specific steps of S2 include: the reference point includes a first reference point and a second reference point, the total station is placed on the first reference point, and the second reference point is viewed backward to complete the coordinate station establishment.

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