CN110360962B

CN110360962B - A method to quickly identify plane flatness

Info

Publication number: CN110360962B
Application number: CN201910657320.7A
Authority: CN
Inventors: 胡志刚; 王长军; 唐葆华; 李勇会; 王保平; 赵昆鹏
Original assignee: Beijing No6 Construction Engineering Quality Test Department Co ltd; China Construction First Group Corp Ltd; Beijing Building Research Institute Corp Ltd of CSCEC
Current assignee: Beijing No6 Construction Engineering Quality Test Department Co ltd; China Construction First Group Corp Ltd; Beijing Building Research Institute Corp Ltd of CSCEC
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2021-07-02
Anticipated expiration: 2039-07-19
Also published as: CN110360962A

Abstract

The invention relates to a method for quickly identifying the flatness of a plane. The plane includes a flat part, a concave part and a convex part, and includes a laser generator. The laser emitted by the laser generator is a laser plane, and the laser plane is irradiated on the plane at a certain angle with the plane. On the plane, identification lines are formed on the flat part, the concave part and the convex part. According to the principle that the laser oblique projection length is much larger than the height of the obstacle, and the relationship between the defect height and its reverse projection length, the invention can accurately and quickly identify the flatness of the defect, so as to achieve the flatness of the construction process, quality acceptance and maintenance monitoring. The purpose of whether the flatness is qualified, speed up the test, acceptance and monitoring speed, with the characteristics of fast speed, high efficiency, stable performance, high precision and low cost.

Description

Method for rapidly identifying plane flatness

Technical Field

The invention relates to a method for rapidly identifying plane flatness, which is used for detecting, checking and monitoring the quality of constructional engineering.

Background

The plane is the main expression form of buildings and roads. In current road traffic, the quality of road surface evenness is directly related to the conditions of vehicles in the aspects of driving safety, oil consumption, speed, mechanical wear, comfort and the like, and the building wall surface evenness is more related to the visual perception of each user, so that the attention and the control on the plane evenness are required to be strengthened. At present, the flatness is controlled and measured by a 2m guiding rule.

Meanwhile, the amount of the engineering is huge, the measurement work is heavy, and technicians are in trouble and labor. For years, the measurement of flatness can be said to be 'measuring the ruler to the end', and a reliable rapid test technology does not exist at present.

Disclosure of Invention

The invention aims to solve the technical problem of providing a method for quickly identifying plane flatness, and overcoming the huge defects of the prior art that a guiding rule is adopted for controlling and checking engineering.

The technical scheme for solving the technical problems is as follows: the plane comprises a leveling part, a concave part and a convex part, and comprises a laser generator, wherein laser emitted by the laser generator is a laser plane, the laser plane irradiates on the plane at a certain angle with the plane, and identification lines are formed on the leveling part, the concave part and the convex part.

The invention has the beneficial effects that: adopt the laser of laser generator transmission to be the laser plane, the laser plane is in order to become certain angle with the plane and shine on the plane level position, sunken position and protrusion position are gone up and are formed the identification line, are greater than the principle of barrier height according to laser oblique projection length, according to the relation of defect height rather than reverse projection length, come accurate quick identification its roughness size, reach and judge in the work progress, when quality is examined, whether qualified purpose of planar roughness when dimension guarantor monitors for test, acceptance, monitoring speed, it is fast to have test speed, high efficiency, stable performance, high accuracy, low cost.

On the basis of the technical scheme, the invention can be further improved as follows.

The invention relates to a method for rapidly identifying plane flatness, and further, a laser plane is arranged in a horizontal direction or a vertical direction.

The invention relates to a method for rapidly identifying plane flatness, which further comprises the following steps of calibrating test equipment to draw a standard curve:

step (1), setting an angle between a laser plane and a test position as alpha, projecting the laser plane on the test plane, and presenting an identification line;

setting the central axis of the identification line relative to the concave area defect position and the convex area defect position, and measuring the vertical distance between the concave area defect position and/or the convex area defect position and the central axis by using a ruler to be the laser measurement defect distance L;

step (3), measuring the actual defect distance L' by using a feeler gauge, and repeating the steps (2) and (3);

a full 10 log number is uniformly collected from 0 to 10cm (wherein a pair of quantitative numbers must be present, i.e., at least one set of actual defect distances L 'corresponding to the laser measured defect distances L, such as 2mm for the actual defect distance L' and 2cm for the laser measured defect distance L to be determined, so that accurate determination is facilitated),

and (4) taking the reading L of the ruler as a horizontal coordinate and taking the reading L' of the feeler gauge as a vertical coordinate to draw a standard curve.

The invention relates to a method for rapidly identifying plane flatness, and further, calculating the flatness x at a defect position according to the following formula, wherein the flatness x is kL, and k is tg alpha, L'/L.

The invention relates to a method for rapidly identifying plane flatness, and further relates to a ruler for measuring a laser measurement defect distance L, which is accurate to 0.5 mm.

The invention relates to a method for rapidly identifying plane flatness, which further comprises the step (2) of setting the central axis of an identification line relative to a concave area defect position and a convex area defect position, and aligning the central axis of the identification line by using a running rule.

The invention relates to a method for rapidly identifying plane flatness, which further comprises a field test step (A), wherein a laser generator is started, and an identification line displayed on a plane by a laser plane is stable;

step (B), starting measurement and observing the shape of the identification line; and selecting an abnormal defect position to measure a relative defect distance L, and converting L' according to a standard curve to obtain the flatness x.

The invention relates to a method for rapidly identifying plane flatness, which is characterized in that two laser generators are symmetrically arranged for field test, identification lines are respectively provided, and the central axis of the identification lines is accurately positioned.

The beneficial effect of adopting the further scheme is that: two laser generators are adopted to emit two laser planes to position a positioning identification line, so that the central axis of the identification line with the concave area defect position and the convex area defect position can be accurately positioned.

Drawings

FIG. 1 is a schematic structural diagram of an identification line formed by a laser plane emitted by a laser emitter and a plane to be detected in the method for rapidly identifying plane flatness according to the present invention;

FIG. 2 is a schematic structural diagram of the principle of measurement of the method for rapidly identifying plane flatness of the invention;

FIG. 3 is a schematic diagram of a standard defect produced in the measurement process by the method for rapidly identifying plane flatness according to the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1. the identification line comprises a flat part, 2, a concave part, 3, a convex part, 4, a plane, 11, a laser generator, 12, laser, 13 and an identification line.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1, according to the embodiment of the invention, a plane 4 comprises a flat part 1, a concave part 2 and a convex part 3, and comprises a laser generator 11, the laser generator 11 emits laser 12, the laser 12 is irradiated on the plane at a certain angle with the plane, and an identification line 13 is formed on the flat part 1, the concave part 2 and the convex part 3. Specifically, the laser plane may be disposed in a horizontal direction or a vertical direction.

As shown in fig. 2 and 3, the method for rapidly identifying plane flatness according to the present invention includes calibrating a testing device to draw a standard curve: step (1), setting a laser plane to form an angle alpha with the plane; alpha is greater than 0 degree and less than 90 degrees; preferably 15-60 degrees.

Setting the central axis of the identification line relative to the concave area defect position and the convex area defect position, and measuring the vertical distance between the concave area defect position and/or the convex area defect position and the central axis by using a ruler to be the laser measurement defect distance L; the ruler is required to be accurate to 0.5 mm;

the central axis of the identification line relative to the concave area defect position and the convex area defect position is set in the step, the central axis of the identification line can be aligned by using a guiding ruler, and then the perpendicular distance between the concave area defect position and the central axis is measured by a ruler to be the laser measurement defect distance L.

and (4) taking the reading L of the ruler as a horizontal coordinate and taking the reading L' of the feeler gauge as a vertical coordinate to draw a standard curve. The flatness x of a specific test plane can be calculated by the following formula, where k tg α L '/L, L is the perpendicular distance between the position of the laser projection and the central axis of the identification line, and L' is the actual flatness.

The method for rapidly identifying the plane flatness carries out field test, step (A), a laser generator is started, and an identification line displayed on a plane to be detected by a laser plane is stable;

Specifically, when the device is used for field test, two laser generators can be symmetrically arranged to respectively provide identification lines and accurately position the central axis of the identification lines. Therefore, the two laser generators are adopted to emit two laser planes to position the positioning identification line, and the central axis of the positioning identification line can be accurately determined.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. a method for quickly identifying the flatness of a plane, the plane comprises a flat part, a concave part, a protruding part, it is characterized in that, comprises a laser generator, and the laser light emitted by the laser generator is a laser plane, and the laser The plane is irradiated on the plane at a certain angle with the plane, and identification lines are formed on the flat part, the concave part and the convex part;

Including calibration test equipment to draw standard curve:

Step (1), set the laser plane to be α at the angle with the test position, and the laser plane is projected on the test plane to present the identification line;

Step (2), set the center axis of the identification line relative to the defect position in the concave area and the defect position in the convex area, use a ruler to measure the defect position in the concave area or/and the vertical distance from the defect position in the convex area from the central axis is the laser measurement defect distance. L;

Step (3), use a feeler gauge to measure the actual defect distance L', repeat steps (2) and (3);

Step (4), the ruler reading L is the abscissa, and the feeler gauge reading L' is the ordinate, and a standard curve is drawn;

Calculate the flatness x at the defect by the following formula, flatness x=k·L, where k=tgα=L’/L;

Step (2) setting the center axis of the identification line relative to the defect position in the concave area and the defect position in the convex area, and using a ruler to align the center axis of the identification line, and further using a feeler gauge to measure L';

Including field test, step (A), starting the laser generator, waiting for the identification line displayed by the laser plane on the plane to be stable;

Step (B), start the measurement, observe the shape of the identification line; select the abnormal defect place to measure the relative defect distance L, and convert L' according to the standard curve to obtain the flatness x.

2 . The method for quickly identifying the flatness of a plane according to claim 1 , wherein the laser plane is arranged in a horizontal direction or a vertical direction. 3 .

3 . The method for quickly identifying the flatness of a plane according to claim 1 , wherein the measuring ruler for measuring the defect distance L by the laser is accurate to 0.5 mm. 4 .

4 . The method for quickly identifying the flatness of a plane according to claim 1 , wherein two laser generators are arranged symmetrically in the field test, respectively providing identification lines and accurately positioning the central axis of the identification lines. 5 .