CN111504235A - Apparatus and method for measuring flatness using linear light source - Google Patents
Apparatus and method for measuring flatness using linear light source Download PDFInfo
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- CN111504235A CN111504235A CN202010518283.4A CN202010518283A CN111504235A CN 111504235 A CN111504235 A CN 111504235A CN 202010518283 A CN202010518283 A CN 202010518283A CN 111504235 A CN111504235 A CN 111504235A
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- light source
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- height difference
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000010276 construction Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 5
- 238000005070 sampling Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
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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
- G01B5/28—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses an instrument for measuring flatness by utilizing a linear light source, which comprises an emitting device and a receiving device, wherein the emitting device comprises a base and an emitting part positioned above the base, the emitting part is connected with a base bearing, and the outer surface of the emitting part is embedded with the linear light source which emits light parallel to a horizontal plane; the receiving device comprises a base with the same height as that of the base of the transmitting device and a height difference measuring part above the base, wherein the surface of the height difference measuring part is provided with a plurality of uniformly distributed scale marks, and the zero scale marks are as high as the straight line light source by taking a horizontal plane as a reference. The invention also discloses a method for measuring the flatness by using the linear light source. The instrument of the invention has simple structure, the method is convenient to operate, and the level of any two points of the plane can be accurately judged through the matching of the transmitting device and the laser receiving device, and the accurate height difference values at different positions on the plane can be rapidly and visually measured.
Description
Technical Field
The invention relates to the field of flatness and error measurement, in particular to an instrument and a method for measuring flatness by utilizing linear light sources such as a laser emitter, an infrared emitter and the like, which are suitable for measuring flatness and errors of a large plane object or a construction area.
Background
When a plane object or area is constructed or inspected, whether the flatness meets the requirement needs to be measured, and the smaller the flatness value is, the flatter the surface of the object or area is. At present, when the flatness of a plane object or a construction area with a large area is measured, the difference of the heights of the positions at different distances can be only roughly estimated through a level ruler or a measuring tape, but the actual data difference cannot be accurately read, and an accurate flatness value is difficult to obtain. The laser or the infrared has the linear transmission characteristic, the collimation of the laser is better, and the linear transmission effect is better, so the leveling is performed by using the characteristic of the laser or the infrared.
Disclosure of Invention
Aiming at the technical problems, the invention provides an instrument and a method for measuring flatness by using a linear light source, which can quickly and accurately judge whether an object or an area with a larger area is horizontal or not and conveniently and intuitively read the height difference values of different positions.
The invention adopts the following technical scheme:
an instrument for measuring flatness by using a linear light source comprises an emitting device and a receiving device, wherein the emitting device comprises a base and an emitting part positioned above the base, the emitting part is connected with a base bearing, and the outer surface of the emitting part is embedded with the linear light source which emits light parallel to a horizontal plane; the receiving device comprises a base with the same height as that of the base of the transmitting device and a height difference measuring part above the base, wherein the surface of the height difference measuring part is provided with a plurality of uniformly distributed scale marks, and the zero scale marks are as high as the straight line light source by taking a horizontal plane as a reference.
The instrument for measuring the flatness by using the linear light source has the advantages that the device is simple in structure, and can accurately judge whether any two points of a plane are horizontal or not through the matching of the emitting device and the laser receiving device and rapidly and visually measure the accurate height difference values at different positions on the plane.
Further, the linear light source is a laser emitter or an infrared emitter.
Furthermore, the part above the zero scale mark of the height difference measuring part is a positive value, and the absolute value is sequentially increased from bottom to top; the part below the zero scale mark is a negative value, and the absolute value is increased from top to bottom in sequence.
Furthermore, the transmitting device and the receiving device are respectively made of stainless steel materials.
A measuring method of the above-mentioned instrument for measuring flatness using laser is implemented by the steps of:
s1, fixing the launching device at any position of the plane where construction is completed;
s2, fixing the receiving device at a random spot check position on the plane where the construction is completed, and rotating the emitting part of the emitting device to make the linear light source align with the height difference measuring part on the receiving device;
and S3, turning on the linear light source, irradiating the laser line on the scale mark of the height difference measuring part, checking whether the laser is positioned above the zero scale mark or below the zero scale mark, reading the corresponding numerical value of the laser line and judging whether the required flatness is achieved.
The measuring method has the advantages that the method is convenient to operate, whether the plane is horizontal or not can be accurately judged through the matching of the emitting device and the laser receiving device, and the accurate height difference values at different positions on the plane can be rapidly and visually read.
Drawings
FIG. 1 is a perspective view of the structure of the transmitting device of the present invention;
FIG. 2 is a side view of the launching device of the present invention;
FIG. 3 is a top view of the launching device of the present invention;
FIG. 4 is a side view of the receiving device of the present invention;
FIG. 5 is a state diagram of the use of the present invention;
in the figure: 1-an emitting section; 2-a laser emitter; 3-a launch device base; 4-a connecting shaft; 5-a receiving device base; 6-zero scale line; 7-upper scale lines; 8-lower scale line.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments. It is to be understood that the following description is only for purposes of clearly illustrating the present invention and is not to be taken in a limiting sense.
Referring to fig. 1 to 5, there are shown a transmitting device and a receiving device constituting an instrument for measuring flatness using a laser. The transmitting device is composed of a transmitting device base 3, a transmitting part and the like.
The emitter base 3 is round platform shape, and the emission portion 1 is cylindrical, and the emission portion 1 passes through connecting axle 4 and sets up in emitter base 3 top. Connecting axle 4 one end fixed connection is at 3 tops of emitter base, and the junction of the 4 other ends of connecting axle and 1 bottoms of transmission portion sets up the bearing, realizes that transmission portion bottom and emitter base 3's bearing are connected to transmission portion 1 can rotate relative emitter base 3. The outer surface of the emitting part is embedded with a laser emitter 2 emitting light parallel to the horizontal plane, and the laser emitter 2 can also be replaced by an infrared emitter, but when the distance is larger, a laser emitter with good linear emitting performance is preferred. When the emitting part 1 rotates relative to the emitting device base 3 by the rotation of the bearing, the laser emitted by the laser emitter 2 is always parallel to the horizontal plane.
The receiving device comprises a receiving device base 5, a height difference measuring part and the like, and the receiving device base 5 and the height difference measuring part are fixedly connected through a connecting shaft. The receiving device base 5 is also in the shape of a circular truncated cone and has the same height as the transmitting device base 3, and the surface of the height difference measuring part is provided with a plurality of uniformly distributed scale marks with the unit of mm. When the emitting device and the receiving device are arranged on a horizontal plane together, the position of the zero scale mark 6 is as high as the laser emitter 2. For the upper scale mark 7 above the zero scale mark 6, the numerical value is a positive value, and the absolute values are sequentially increased from bottom to top; for the lower scale mark 8 below the zero scale mark 6, the value is negative, and the absolute value increases from top to bottom. In order to enhance the wear resistance and the definition of the scale marks, the level difference measuring portion is made of a stainless steel material. The whole transmitting device and the whole receiving device can also be made of stainless steel materials, so that the durability and the stability of the transmitting device and the receiving device are improved, and other suitable materials can also be adopted.
A measuring method of the instrument for measuring flatness using a laser line as described above is implemented by the steps of:
and S1, fixing the launching device at any position of the plane where construction is finished.
S2, the receiver is fixed at a random spot check position in the plane where the construction is completed, and the transmitter is rotated to align the laser transmitter 2 with the height difference measuring part on the receiver.
S3, turning on the laser emitter 2, the laser emitter 2 emitting horizontal laser, the laser irradiating on the scale mark of the height difference measuring part along the arrow direction shown in fig. 5, checking whether the laser is located above the zero scale mark or below the zero scale mark, when the reading is located at the zero scale mark, indicating that the two positions are equal in height, when the reading is located above the zero scale mark (positive value), indicating that the receiving device is located higher than the emitting device, and when the reading is located below the zero scale mark (positive value), indicating that the receiving device is located lower than the emitting device; and accurately reading the numerical value of the laser corresponding to the scale mark, wherein the numerical value is the height difference between the two positions, and judging whether the required flatness is achieved. For example, for a construction plane, the surface flatness of the construction plane is required to be not more than 2mm, several sampling points are randomly selected on the surface of the construction plane, and the height difference between each sampling point and the emitting device is measured respectively, so that the height difference between each sampling point and the emitting device can be obtained, if the height difference between any two points meets the requirement of plus or minus 2mm, the construction plane meets the construction requirement, otherwise, the construction plane needs to be further adjusted.
The instrument and the method for measuring the flatness by using the laser have the advantages that the device is simple in structure, the measuring method is simple and convenient to operate, whether the plane is horizontal or not can be accurately judged through the matching of the emitting device and the laser receiving device, and the accurate height difference values at different positions on the plane can be rapidly and visually measured.
The foregoing is only a preferred embodiment of the present invention. Various modifications and equivalent changes may be made by those skilled in the art without departing from the spirit and scope of the present invention, and such modifications and changes are intended to be included within the scope of the present invention.
Claims (5)
1. An instrument for measuring flatness by using a linear light source comprises an emitting device and is characterized by also comprising a receiving device, wherein the emitting device comprises a base and an emitting part positioned above the base, the emitting part is connected with a base bearing, and the outer surface of the emitting part is embedded with the linear light source which emits light parallel to a horizontal plane; the receiving device comprises a base with the same height as that of the base of the transmitting device and a height difference measuring part above the base, wherein the surface of the height difference measuring part is provided with a plurality of uniformly distributed scale marks, and the zero scale marks are as high as the straight line light source by taking a horizontal plane as a reference.
2. The apparatus for measuring flatness according to claim 1, wherein the linear light source is a laser emitter or an infrared emitter.
3. The apparatus for measuring flatness using a linear light source according to claim 1, wherein the portion above the zero graduation mark of the height difference measuring part is a positive value, and the absolute value increases from bottom to top; the part below the zero scale mark is a negative value, and the absolute value is increased from top to bottom in sequence.
4. The apparatus for measuring flatness using a linear light source as claimed in claim 1, wherein the transmitting means and the receiving means are made of stainless steel material, respectively.
5. A measuring method of the instrument for measuring flatness using laser as described above, characterized by being implemented by the steps of:
s1, fixing the launching device at any position of the plane where construction is completed;
s2, fixing the receiving device at a random spot check position on the plane where the construction is completed, and rotating the emitting part of the emitting device to make the linear light source align with the height difference measuring part on the receiving device;
and S3, turning on the linear light source, irradiating the laser line on the scale mark of the height difference measuring part, checking whether the laser is positioned above the zero scale mark or below the zero scale mark, reading the corresponding numerical value of the laser line and judging whether the required flatness is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010518283.4A CN111504235A (en) | 2020-06-09 | 2020-06-09 | Apparatus and method for measuring flatness using linear light source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010518283.4A CN111504235A (en) | 2020-06-09 | 2020-06-09 | Apparatus and method for measuring flatness using linear light source |
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| CN111504235A true CN111504235A (en) | 2020-08-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111991760A (en) * | 2020-08-20 | 2020-11-27 | 河南科技大学第一附属医院 | An orthopedic high and low shoulder correction auxiliary device |
| CN113739756A (en) * | 2021-08-18 | 2021-12-03 | 安徽建筑大学 | Coal mining subsidence ground crack height difference measuring device and method |
| CN113959394A (en) * | 2021-09-30 | 2022-01-21 | 国网河北省电力有限公司建设公司 | A sliding mode template calibration device |
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| CN106500603A (en) * | 2016-10-27 | 2017-03-15 | 中国冶集团有限公司 | A kind of slidingtype infrared ray absolute altitude control and measure device and measuring method |
| CN107966133A (en) * | 2018-01-15 | 2018-04-27 | 季志博 | Railway manually track lifting elevation laser control apparatus and its elevation control method |
| CN210180448U (en) * | 2019-08-30 | 2020-03-24 | 中海福陆重工有限公司 | Spatial plane parallel and level detection device |
| CN211954059U (en) * | 2020-06-09 | 2020-11-17 | 中国二十二冶集团有限公司 | Instrument for measuring flatness by using linear light source |
-
2020
- 2020-06-09 CN CN202010518283.4A patent/CN111504235A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500603A (en) * | 2016-10-27 | 2017-03-15 | 中国冶集团有限公司 | A kind of slidingtype infrared ray absolute altitude control and measure device and measuring method |
| CN107966133A (en) * | 2018-01-15 | 2018-04-27 | 季志博 | Railway manually track lifting elevation laser control apparatus and its elevation control method |
| CN210180448U (en) * | 2019-08-30 | 2020-03-24 | 中海福陆重工有限公司 | Spatial plane parallel and level detection device |
| CN211954059U (en) * | 2020-06-09 | 2020-11-17 | 中国二十二冶集团有限公司 | Instrument for measuring flatness by using linear light source |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111991760A (en) * | 2020-08-20 | 2020-11-27 | 河南科技大学第一附属医院 | An orthopedic high and low shoulder correction auxiliary device |
| CN113739756A (en) * | 2021-08-18 | 2021-12-03 | 安徽建筑大学 | Coal mining subsidence ground crack height difference measuring device and method |
| CN113959394A (en) * | 2021-09-30 | 2022-01-21 | 国网河北省电力有限公司建设公司 | A sliding mode template calibration device |
| CN113959394B (en) * | 2021-09-30 | 2024-02-06 | 国网河北省电力有限公司建设公司 | A sliding mode template calibration device |
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