CN113532227A - Alignment matching height difference accurate measurement device and use method thereof - Google Patents
Alignment matching height difference accurate measurement device and use method thereof Download PDFInfo
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- CN113532227A CN113532227A CN202110759570.9A CN202110759570A CN113532227A CN 113532227 A CN113532227 A CN 113532227A CN 202110759570 A CN202110759570 A CN 202110759570A CN 113532227 A CN113532227 A CN 113532227A
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- scale
- protractor
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- graduated scale
- height difference
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
Abstract
The invention relates to a device for accurately measuring alignment matching height difference and a using method thereof, belonging to the technical field of height difference measurement. The device comprises a main graduated scale, an auxiliary graduated scale and a protractor, wherein the auxiliary graduated scale is connected to one end of the main graduated scale in a sliding mode, and the protractor is arranged at the joint of the main graduated scale and the auxiliary graduated scale. The invention improves the measurement precision of the alignment matching height difference, is convenient to operate, can quickly complete measurement, saves time and ensures the construction progress.
Description
Technical Field
The invention relates to a device for accurately measuring alignment matching height difference and a using method thereof, belonging to the technical field of height difference measurement.
Background
At present, in the construction process of a steel structure and a concrete structure, the butt joint of two members often has the matching height difference of the alignment caused by construction and manufacturing errors, such as the matching height difference of two sides of the butt joint welding line of two sections of steel box girders in the assembling and welding process of the steel box girders. Due to the height difference, stress concentration or uneven stress of components exists at the joint, and the matched height difference needs to be measured and eliminated in the construction process. However, the magnitude of the height difference is often in millimeter level, the precision of the measuring instrument and the measuring method greatly affects the height difference, the height difference is definitely specified in the specification to be not more than 2mm by taking the steel box girder alignment matching height difference as an example, and once a measuring error occurs in the actual measuring process, the result judgment and the subsequent construction are greatly affected.
The traditional alignment matching height difference measurement is carried out by matching a level gauge and a leveling rod, two points are taken from an area to be measured after the level gauge is leveled during measurement, the leveling rod is respectively erected at the two points, and the difference is obtained after the level gauge reads the elevations of the two reference points, so that the two-point alignment matching height difference is obtained, for example, the method for measuring and calculating the level in the installation process of the in-pile member disclosed in the Chinese patent document CN 109520475A. However, this measurement method is prone to generate large measurement errors: if guarantee measurement accuracy, need the levelling rod to keep absolute vertical, the deviation can not appear, but the unable accurate assurance of the vertical degree of levelling rod in the process of erectting, generally all be the manual work confirm vertical can, and once the discrepancy in elevation measurement need erect the levelling rod twice, make measuring error increase at double.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the alignment matching height difference accurate measuring device, which improves the measurement accuracy of the alignment matching height difference, is convenient to operate, can quickly finish measurement and saves time.
The invention also provides a using method of the alignment matching height difference accurate measuring device.
The technical scheme of the invention is as follows:
the utility model provides a counterpoint matches discrepancy in elevation precision measurement device, includes main scale, vice scale and protractor, and wherein, main scale one end sliding connection has vice scale, and the junction of main scale and vice scale is provided with the protractor.
Preferably, be provided with the recess on the main scale, recess one end is through round pin axle sliding connection pair scale one end, makes in vice scale can accomodate into the recess, practices thrift the volume, conveniently accomodates.
Further preferably, the outer side of the pin shaft is provided with a bulge, and a protractor is arranged on the bulge in a hanging manner.
Preferably, the groove depth is the same with vice scale thickness, guarantees that vice scale can accomplish to accomodate into the recess.
The use method of the alignment matching height difference accurate measuring device comprises the following operation steps:
(1) selecting a point A to be measured2、B2Then erecting and leveling the level gauge;
(2) the auxiliary graduated scale is rotationally taken out from the groove of the main graduated scale, the protractor is hung on the bulge on the outer side of the pin shaft, and the protractor is leveled under the action of self gravity (namely, the 0-180-degree graduation line is in a horizontal state);
(3) the bottoms of the main graduated scale and the auxiliary graduated scale are respectively placed at the point A to be measured2、B2；
(4) Reading out the A with the same level on the main graduated scale and the auxiliary graduated scale through the level1、B1Dot scale value, i.e. obtaining A1A2And B1B2Length of (d);
(5) respectively measuring the included angles alpha and beta between the center lines of the main graduated scale and the auxiliary graduated scale and the horizontal line of the protractor through the protractor;
(6) calculating to obtain a measuring point A2、B2A height difference of (d);
(7) and (4) measuring points are taken for multiple times in the same measuring area, the steps (1) to (6) are repeated, and the measured height difference is averaged.
Preferably, the datum point A in step (4)1、B1At the same level.
Preferably, point A is measured in step (6)2、B2The height difference of (c) is calculated as follows:
a. with A1A2Constructing a right triangle A for the hypotenuse of the right triangle2A1A3With B1 B2Constructing a right triangle B for the hypotenuse2B1B3；
b、B1B3And A1A3Are all parallel to the central lines of the main scale and the auxiliary scale, so the angle A2A1A3And B2B1B3Are respectively equal to the included angles alpha and beta;
c. a is to be1A2And B1B2Substituting the length of (d) into the following equation:
A1A3＝A1A2cosα
B1B3＝B1B2cosβ
calculated to obtain A1A3And B1B3Length of (1), point A2、B2A is1A3-B1B3＝A1A2cosα-B1B2cosβ。
The invention has the beneficial effects that:
1. the invention improves the measurement precision of the alignment matching height difference, is convenient to operate, can quickly complete measurement, saves time and ensures the construction progress.
2. The invention has simple structure and low manufacturing cost, can be quickly applied to a construction site, is convenient to store and use and occupies small volume.
Drawings
FIG. 1 is a schematic view of the open state structure of the present invention;
FIG. 2 is a schematic structural view of the storage state of the present invention;
FIG. 3 is a schematic view of the split structure of the present invention;
figure 4 is a schematic view of the protractor installation process of the present invention;
FIG. 5 is a structural diagram illustrating a use state of the present invention;
FIG. 6 is a computational schematic of the present invention;
wherein: 1. a main scale; 2. a secondary scale; 3. a protractor; 4. a pin shaft; 5. and (4) protruding.
Detailed Description
The present invention will be further described by way of examples, but not limited thereto, with reference to the accompanying drawings.
Example 1:
as shown in fig. 1 to 5, the present embodiment provides an alignment matching height difference precision measuring device, which includes a main scale 1, an auxiliary scale 2 and a protractor 3, wherein the auxiliary scale 2 is slidably connected to one end of the main scale 1, and the protractor 3 is disposed at a connection position of the main scale 1 and the auxiliary scale 2.
Be provided with the recess on the main scale 1, recess one end is through 2 one ends of 4 sliding connection pair scales of round pin axle, makes in vice scale 2 can accomodate into the recess, practices thrift the volume, convenient storage.
The outer side of the pin shaft 4 is provided with a protrusion 5, the protrusion 5 is provided with a protractor 3 in a hanging manner, and the protractor 3 can be leveled under the action of self gravity after being hung on the protrusion through a circular hole.
The groove depth is the same with vice scale thickness, guarantees that vice scale can accomplish to accomodate into the recess.
The use method of the alignment matching height difference accurate measuring device comprises the following operation steps:
(1) selecting a point A to be measured2、B2Then erecting and leveling the level gauge;
(2) the auxiliary graduated scale is rotationally taken out from the groove of the main graduated scale, the protractor is hung on the bulge on the outer side of the pin shaft, and the protractor is leveled under the action of self gravity (namely, the 0-180-degree graduation line is in a horizontal state);
(3) the bottoms of the main graduated scale and the auxiliary graduated scale are respectively placed at the point A to be measured2、B2As shown in fig. 5;
(4) reading out the A with the same level on the main graduated scale and the auxiliary graduated scale through the level1、B1Dot scale value, i.e. obtaining A1A2And B1B2Length of (d);
after the height of the level gauge is determined, the level lines in the lens of the level gauge are respectively aligned with the main graduated scale and the auxiliary graduated scale, and at the moment, A at the same horizontal height can be determined1、B1Dot scale value, i.e. A1A2And B1B2Length of (d).
(5) Respectively measuring the included angles alpha and beta between the center lines of the main graduated scale and the auxiliary graduated scale and the horizontal line of the protractor through the protractor;
(6) calculating to obtain a measuring point A2、B2A height difference of (d);
(7) and (4) measuring points are taken for multiple times in the same measuring area, the steps (1) to (6) are repeated, and the measured height difference is averaged.
The water level base point A in the step (4)1、B1And the device is positioned at the same horizontal height, so that subsequent calculation is facilitated.
Example 2:
the use method of the alignment matching height difference accurate measurement device is as described in embodiment 1, except that in step (6), the measurement point A is used2、B2The height difference of (c) is calculated as follows:
a. with A1A2Constructing a right triangle A for the hypotenuse of the right triangle2A1A3With B1 B2Constructing a right triangle B for the hypotenuse2B1B3As shown in fig. 6;
b、B1B3and A1A3Are all parallel to the mainCenter lines of the scale and the auxiliary scale, so2A1A3And B2B1B3Are respectively equal to the included angles alpha and beta;
c. a is to be1A2And B1B2Substituting the length of (d) into the following equation:
A1A3＝A1A2cosα
B1B3＝B1B2cosβ
calculated to obtain A1A3And B1B3Length of (1), point A2、B2A is1A3-B1B3＝A1A2cosα-B1B2cosβ。
Claims (7)
1. The utility model provides a counterpoint matches poor precision measurement device of height which characterized in that, includes main scale, vice scale and protractor, and wherein, main scale one end sliding connection has vice scale, and the junction of main scale and vice scale is provided with the protractor.
2. The alignment matching level difference precision measuring device as claimed in claim 1, wherein the main scale is provided with a groove, and one end of the groove is slidably connected with one end of the auxiliary scale through a pin shaft.
3. The alignment matching elevation difference precision measuring device of claim 2, wherein the pin shaft is provided with a bulge at the outer side, and a protractor is hung on the bulge.
4. The alignment matching level difference precision measuring device according to claim 2, wherein the depth of the groove is the same as the thickness of the sub-scale.
5. The use method of the alignment matching height difference precision measuring device according to claim 3 is characterized by comprising the following operation steps:
(1) selecting a test objectPoint A2、B2Then erecting and leveling the level gauge;
(2) the auxiliary graduated scale is rotationally taken out from the groove of the main graduated scale, a protractor is hung on the bulge on the outer side of the pin shaft, and the protractor is leveled under the action of self gravity;
(3) the bottoms of the main graduated scale and the auxiliary graduated scale are respectively placed at the point A to be measured2、B2；
(4) Reading out the A with the same level on the main graduated scale and the auxiliary graduated scale through the level1、B1Dot scale value, i.e. obtaining A1A2And B1B2Length of (d);
(5) respectively measuring the included angles alpha and beta between the center lines of the main graduated scale and the auxiliary graduated scale and the horizontal line of the protractor through the protractor;
(6) calculating to obtain a measuring point A2、B2A height difference of (d);
(7) and (4) measuring points are taken for multiple times in the same measuring area, the steps (1) to (6) are repeated, and the measured height difference is averaged.
6. The alignment matching step height precision measuring device according to claim 5, wherein the datum point A in step (4)1、B1At the same level.
7. The alignment matching step height precision measuring device according to claim 5, wherein the measuring point A in step (6)2、B2The height difference of (c) is calculated as follows:
a. with A1A2Constructing a right triangle A for the hypotenuse of the right triangle2A1A3With B1 B2Constructing a right triangle B for the hypotenuse2B1B3；
b、B1B3And A1A3Are all parallel to the central lines of the main scale and the auxiliary scale, so the angle A2A1A3And B2B1B3Are respectively equal to the included angles alpha and beta;
c. a is to be1A2And B1B2Substituting the length of (d) into the following equation:
A1A3＝A1A2cosα
B1B3＝B1B2cosβ
calculated to obtain A1A3And B1B3Length of (1), point A2、B2A is1A3-B1B3＝A1A2cosα-B1B2cosβ。
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| CN202110759570.9A CN113532227B (en) | 2021-07-05 | 2021-07-05 | Alignment matching height difference accurate measurement device and use method thereof |
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| CN202110759570.9A CN113532227B (en) | 2021-07-05 | 2021-07-05 | Alignment matching height difference accurate measurement device and use method thereof |
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| CN113532227B CN113532227B (en) | 2022-09-09 |
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| CN210242671U (en) * | 2019-07-10 | 2020-04-03 | 江苏东交工程检测股份有限公司 | Multifunctional angle ruler |
| CN210802255U (en) * | 2019-11-11 | 2020-06-19 | 王相珂 | Multifunctional ruler for urban and rural planning |
| CN211749620U (en) * | 2019-09-24 | 2020-10-27 | 福建医科大学 | Can more accurate activity protractor of measuring different joints |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190223275A (en) * | 1902-10-24 | 1903-10-01 | Tomas Fregoso | An Improved Measuring Instrument for the Solution of Triangles and other Trigonometrical Operations in Surveying and the like. |
| JP3044845U (en) * | 1997-06-26 | 1998-01-16 | 三ツ星ベルト株式会社 | Polishing allowance measuring instrument |
| JP2004191155A (en) * | 2002-12-11 | 2004-07-08 | Masatoshi Sugano | Simple height meter |
| JP2007147467A (en) * | 2005-11-29 | 2007-06-14 | Sanki Eng Co Ltd | Beam sleeve height inspection system |
| JP2010247496A (en) * | 2009-04-20 | 2010-11-04 | Seitaro Niina | Linear scale ruler for drawing with bevel protractor |
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| US20140215840A1 (en) * | 2013-02-04 | 2014-08-07 | Patrick Elie Kattan | Trigonometer |
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| CN211749620U (en) * | 2019-09-24 | 2020-10-27 | 福建医科大学 | Can more accurate activity protractor of measuring different joints |
| CN210802255U (en) * | 2019-11-11 | 2020-06-19 | 王相珂 | Multifunctional ruler for urban and rural planning |
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