CN112304282B - Method for mounting and measuring rails of centrifugal machine - Google Patents
Method for mounting and measuring rails of centrifugal machine Download PDFInfo
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- CN112304282B CN112304282B CN202011093414.5A CN202011093414A CN112304282B CN 112304282 B CN112304282 B CN 112304282B CN 202011093414 A CN202011093414 A CN 202011093414A CN 112304282 B CN112304282 B CN 112304282B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
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Abstract
The invention discloses a method for installing and measuring a centrifugal machine track, which accurately matches the characteristics and advantages of a DSZ2 precision level gauge, an indium steel ruler, a cast iron level gauge and a frame type level gauge, and successfully improves the installation precision of the centrifugal machine track from 0.5mm to within 0.06 mm; the working surface of the cast iron level bar adopts a scraping process, the maximum allowable deviation of roughness Ra is 2.5 microns, the stability is also improved under the condition of ensuring the smooth surface, the precision grade of a frame type level meter is 0.02mm/m, the measurement precision can be improved to 0.02mm/m, the level and the parallel of the measurement points of the plane rail and the herringbone rail are rechecked by adopting a diagonal method, the level and the parallel of the measurement points at the same positions of the herringbone rail and the plane rail are ensured, and the qualification rate of the centrifuge outlet tube is ensured.
Description
Technical Field
The invention relates to the field of centrifuge rails, in particular to a method for mounting and measuring a centrifuge rail.
Background
The measuring instrument used for the installation and measurement of the current centrifugal machine track is a Suyi light DSZ2 type precision level and an indium steel ruler, the precision is +/-0.5 mm, the conventional measuring method is to use the DSZ2 precision level and the indium steel ruler to perform measurement on two sides of the track in parallel point selection, but the conventional measuring method can meet the installation precision requirement according to the past experience, but two problems occur: 1. because centrifuge track has the slope and two tracks one is the plane rail, one is the location rail promptly chevron rail, chevron rail top surface width only 10mm, and indium steel ruler chi bottom width is 70 millimeters at least 40 millimeters, causes the indium steel ruler to put stability on chevron rail face side measuring point extremely poor, in case the relative position that the indium steel ruler placed is inaccurate in the measurement process, even differs 1mm and can appear two tracks unevenness and appear the error.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for mounting and measuring a centrifugal machine track, which improves the mounting precision and ensures the qualified rate of the discharge tube of the centrifugal machine.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a method for measuring the installation of a centrifugal machine rail comprises the following steps:
s1, determining a measuring point:
the centrifuge track comprises a plane track and a herringbone track, the plane track and the herringbone track are arranged in parallel, and a plurality of measuring points are selected at the same positions on the plane track and the herringbone track respectively;
s2, calculating the theoretical elevation of each measuring point of the plane rail:
respectively measuring the distance between each measuring point and the vertex of the plane rail, measuring the inclination of the plane rail by using an inclinometer and recording the inclination as beta, determining the theoretical elevation of each measuring point according to the distance between the measuring point and the vertex and the inclination and marking;
s3, measuring the actual elevation of each measuring point of the plane rail:
erecting a DSZ2 precision level gauge outside the middle position of the plane rail, arranging an indium steel ruler in the direction vertical to the plane rail at the measuring point of the plane rail, reading the actual elevation of each measuring point, and comparing the actual elevation with the theoretical elevation marked in the step S2; calculating the deviation between the actual elevation and the theoretical elevation, and if the deviation is not more than +/-0.06 mm, measuring the next measuring point; if the deviation exceeds +/-0.06 mm, adjusting the base of the centrifuge track until the deviation does not exceed +/-0.06 mm, and then measuring the next measuring point;
s4, verifying the actual elevation and the theoretical elevation of all the measuring points of the plane rail:
repeating the step S2 and the step S3 until the deviation of the actual elevation and the theoretical elevation of all the measuring points is not more than +/-0.06 mm;
s5, checking whether the measurement point of the E-shaped rail at the same position with the plane rail is horizontal:
the method comprises the steps of horizontally placing cast iron level gauges on two vertexes of a centrifugal machine track, measuring the length of the cast iron level gauges, determining the position of a central point, placing a frame type level meter at the central position of the cast iron level gauges, enabling the precision grade of the frame type level meter to be 0.02mm/m, enabling precise division bubbles on the frame type level meter to move to a high measuring point if measuring points at the same positions of the mountain-shaped track and a plane track are not at the same height, reading according to the moving position of the bubbles, and adjusting the height of the mountain-shaped track until the reading does not exceed the error range of 0.02mm-0.1mm if the reading exceeds the error range of 0.02mm-0.1 mm.
S6, whether the measuring points at the same positions of the retest plane rail and the E-shaped rail are horizontal and parallel is judged:
and taking the top points of the plane rail and the E-shaped rail as the starting points, sequentially taking the measuring points at the same positions of the plane rail and the E-shaped rail behind the starting points as the end points, performing a double check by using a diagonal method, respectively calculating the lengths of the measuring points and the diagonals of the starting points, and if the length error range of the two diagonals is more than 0.5mm, adjusting the positions of the measuring points of the E-shaped rail until the length error range of the two diagonals is not more than 0.5 mm.
The technical scheme of the invention is further improved as follows: the calculation formula of the elevation of each measuring point on the plane rail is as follows: the altitude of the measurement point = the distance between the measurement point and the vertex x arctan β.
The technical scheme of the invention is further improved as follows: the working surface of the cast iron level bar adopts a scraping process, and the maximum allowable deviation of the roughness is 2.5 mu m.
Due to the adoption of the technical scheme, the invention has the technical progress that:
1. the characteristics and advantages of the DSZ2 precision level gauge, the indium steel ruler, the cast iron level gauge and the frame type level gauge are accurately matched for use, and the mounting precision of the rail of the centrifuge is successfully improved from 0.5mm to within 0.06 mm;
2. the working surface of the cast iron level bar adopts a scraping process, the maximum allowable deviation of roughness Ra is 2.5 microns, the stability is also improved under the condition of ensuring the smooth surface, the precision grade of a frame type level meter is 0.02mm/m, the measurement precision can be improved to 0.02mm/m, the level and the parallel of the measurement points of the plane rail and the herringbone rail are rechecked by adopting a diagonal method, the level and the parallel of the measurement points at the same positions of the herringbone rail and the plane rail are ensured, and the qualification rate of the centrifuge outlet pipe is ensured;
3. compared with the original measuring mode, the method for measuring the installation of the centrifuge track not only greatly improves the measuring precision, but also ensures the qualified rate of the centrifuge outlet pipe, and is particularly suitable for the installation of the centrifuge track and other slope equipment with high precision requirements, so the method has high use value in the equipment installation of enterprises.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the present invention for measuring the actual elevation of a plane rail measuring point;
FIG. 3 is a schematic diagram of checking whether the measurement point of the E-shaped rail at the same position as the planar rail is horizontal according to the present invention;
the leveling instrument comprises 1-1 of a plane rail, 1-2 of a herringbone rail, 2 of an indium steel ruler, 3 of a DSZ2 precision leveling instrument, 4 of a cast iron leveling instrument and 5 of a frame type leveling instrument.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
as shown in fig. 1 to 3, a method for measuring a track mount of a centrifuge includes the steps of:
s1, determining a measuring point:
the centrifuge track comprises a plane track 1-1 and a herringbone track 1-2, the plane track 1-1 and the herringbone track 1-2 are arranged in parallel, and a plurality of measuring points are selected at the same positions on the plane track 1-1 and the herringbone track 1-2 respectively;
s2, calculating the theoretical elevation of each measuring point of the plane rail 1-1:
respectively measuring the distance between each measuring point of the plane rail 1-1 and the vertex, measuring the inclination of the plane rail 1-1 by using an inclinometer and recording the inclination as beta, and calculating the elevation of each measuring point, wherein the calculation formula is as follows: the elevation of the measuring point = the distance between the measuring point and the vertex multiplied by arctan beta, and the theoretical elevation of each measuring point is marked;
s3, measuring the actual elevation of each measuring point of the plane rail 1-1:
erecting a DSZ2 precision level 3 outside the middle position of the plane rail 1-1, arranging an indium steel ruler 2 at the measuring point of the plane rail 1-1 in the direction vertical to the plane rail 1-1, reading the actual elevation of each measuring point, and comparing the actual elevation with the theoretical elevation marked in the step S2; calculating the deviation between the actual elevation and the theoretical elevation, and if the deviation is not more than +/-0.06 mm, measuring the next measuring point; if the deviation exceeds +/-0.06 mm, adjusting the base of the centrifuge track until the deviation does not exceed +/-0.06 mm, and then measuring the next measuring point;
s4, and verifying the actual elevation and the theoretical elevation of all the measuring points of the plane rail 1-1:
repeating the step S2 and the step S3 until the deviation of the actual elevation and the theoretical elevation of all the measuring points is not more than +/-0.06 mm;
s5, checking whether the measurement point of the E-shaped rail 1-2 at the same position as the plane rail 1-1 is horizontal:
horizontally placing cast iron level gauges 4 on two vertexes of a track 1 of a centrifuge, adopting a scraping process on working surfaces of the cast iron level gauges 4, enabling the maximum allowable deviation of roughness to be 2.5 mu m, increasing the stability under the condition of ensuring the surface smoothness, measuring the length of the cast iron level gauges 4, determining the position of a central point, placing a frame type level gauge 5 at the central position of the cast iron level gauges 4, enabling the accuracy grade of the frame type level gauge to be 0.02mm/m, improving the measurement accuracy to 0.02mm/m, if measuring points at the same positions of the E-shaped track 1-2 and the plane track 1-1 are not at the same height, moving precise division bubbles on the frame type level gauge 5 to a high measuring point, reading according to the moving position of the bubbles, and if the reading exceeds the error range of 0.02mm-0.1mm, adjusting the heights of the E-shaped track 1-2, until the reading does not exceed the error range of 0.02mm-0.1 mm.
S6, whether the measuring points at the same positions of the retest plane rail 1-1 and the E-shaped rail 1-2 are horizontal and parallel is judged:
taking the top point of the plane track 1-1 and the peak-shaped track 1-2 as an end point as a starting point, sequentially taking the measuring point at the same position of the plane track 1-1 and the peak-shaped track 1-2 behind the starting point as an end point, performing a double check by using a diagonal line method, respectively calculating the length of the measuring point and the diagonal line of the starting point, and if the length error range of the two diagonal lines is more than 0.5mm, adjusting the position of the measuring point of the peak-shaped track 1-2 until the length error range of the two diagonal lines is not more than 0.5 mm.
The characteristics and advantages of the DSZ2 precision level 3, the indium steel ruler 2, the cast iron level 4 and the frame type level 5 are accurately matched for use, and the mounting precision of the rail of the centrifuge is successfully improved from 0.5mm to within 0.06 mm; and then, the level and the parallelism of the measuring points of the flat rail 1-1 and the E-shaped rail 1-2 are retested by adopting a diagonal method, so that the level and the parallelism of the measuring points at the same positions of the E-shaped rail 1-2 and the flat rail 1-1 are ensured, and the yield of the centrifuge outlet tube is ensured. Compared with the original measuring mode, the method for measuring the installation of the track of the centrifugal machine greatly improves the measuring precision, ensures the qualified rate of the discharge tube of the centrifugal machine, and is particularly suitable for the installation of the track of the centrifugal machine with high precision requirement and other slope equipment, so the method has high use value in the equipment installation of enterprises.
Claims (3)
1. A method for mounting and measuring a centrifugal machine rail is characterized by comprising the following steps: the method comprises the following steps:
s1, determining a measuring point:
the centrifuge track comprises a plane track (1-1) and a chevron-shaped track (1-2), the plane track (1-1) and the chevron-shaped track (1-2) are arranged in parallel, and a plurality of measuring points are selected at the same positions on the plane track (1-1) and the chevron-shaped track (1-2) respectively;
s2, calculating the theoretical elevation of each measuring point of the plane rail (1-1):
respectively measuring the distance between each measuring point of the plane rail (1-1) and the vertex, measuring the inclination of the plane rail (1-1) by using an inclinometer and recording the inclination as beta, determining the theoretical elevation of each measuring point according to the distance between the measuring point and the vertex and the inclination and marking;
s3, measuring the actual elevation of each measuring point of the plane rail (1-1):
erecting a DSZ2 precision level gauge (3) at the outer side of the middle position of the plane rail (1-1), arranging an indium steel ruler (2) at the measuring point of the plane rail (1-1) in the direction vertical to the plane rail (1-1), reading the actual elevation of each measuring point, and comparing the actual elevation with the theoretical elevation marked in the step S2; calculating the deviation between the actual elevation and the theoretical elevation, and if the deviation is not more than +/-0.06 mm, measuring the next measuring point; if the deviation exceeds +/-0.06 mm, adjusting the base of the centrifuge track until the deviation does not exceed +/-0.06 mm, and then measuring the next measuring point;
s4, and verifying the actual elevation and the theoretical elevation of all the measuring points of the plane rail (1-1):
repeating the step S2 and the step S3 until the deviation of the actual elevation and the theoretical elevation of all the measuring points is not more than +/-0.06 mm;
s5, checking whether the measurement point of the E-shaped rail (1-2) at the same position as the measurement point of the plane rail (1-1) is horizontal:
horizontally placing cast iron level rulers (4) at two vertexes of a centrifuge track, measuring the length of the cast iron level rulers (4) and determining the position of a central point, placing a frame type level meter (5) at the central position of the cast iron level rulers (4), wherein the precision grade of the frame type level meter (5) is 0.02mm/m, if the measuring points at the same positions of the E-shaped track (1-2) and the plane track (1-1) are not at the same height, precisely dividing bubbles on the frame type level meter (5) to move to a high measuring point, reading according to the moving position of the bubbles, and if the reading exceeds an error range of 0.02mm-0.1mm, adjusting the height of the E-shaped track (1-2) until the reading does not exceed the error range of 0.02mm-0.1 mm;
s6, whether the measuring points at the same positions of the plane rail (1-1) and the E-shaped rail (1-2) are horizontal and parallel is tested:
taking the top point of the plane rail (1-1) and the peak-shaped rail (1-2) as an end point, taking the measuring points at the same positions of the plane rail (1-1) and the peak-shaped rail (1-2) behind the end point as end points in sequence, performing a double check by using a diagonal method, respectively calculating the lengths of the measuring points and the diagonal of the start point, and if the length error range of the two diagonals is more than 0.5mm, adjusting the position of the measuring point of the peak-shaped rail (1-2) until the length error range of the two diagonals is not more than 0.5 mm.
2. A centrifuge rail mounting measurement method according to claim 1, characterized by: the calculation formula of the elevation of each measuring point on the plane rail (1-1) is as follows: the altitude of the measurement point = the distance between the measurement point and the vertex x arctan β.
3. A centrifuge rail mounting measurement method according to claim 1, characterized by: the working surface of the cast iron level bar (4) adopts a scraping process, and the maximum allowable deviation of the roughness is 2.5 mu m.
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| CN113499844B (en) * | 2021-07-28 | 2022-03-22 | 新兴铸管股份有限公司 | Method for improving installation precision of coal mill base |
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