Wall flatness testing device

Abstract

The utility model discloses a wall flatness testing device which comprises a guiding rule and a support installed on the guiding rule, a distance measuring device is fixed to the support, a measuring head of the distance measuring device is fixed to the upper end of a filler gauge, the lower end of the filler gauge is arranged on the side, close to a wall, of the guiding rule, and the inclined face of the lower end of the filler gauge faces the guiding rule. The feeler gauge and the guiding rule are vertically arranged, the guiding rule is provided with a distance measuring wheel, the distance measuring wheel is used for measuring the movement amount of the guiding rule when the guiding rule moves along the wall surface, and the distance measuring device and the distance measuring wheel are respectively in communication connection with the digital display screen. Compared with the prior art, the distance measuring device and the distance measuring wheel are respectively used for obtaining the insertion value of the feeler gauge and the movement amount of the guiding rule, continuous measurement of the wall surface gap is realized by matching with a tangent function formula, and the gap width value and the wall surface measuring point position can be in one-to-one correspondence. The device is simple in overall structure, easy to operate, capable of rapidly measuring and high in efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a wall surface flatness testing device. Background Art

[0002] The wall flatness test is a common inspection item in the construction process. The principle is to place the ruler close to the wall, insert a feeler gauge between the ruler and the wall, and read the feeler gauge reading at the point with the largest gap, which is the unevenness reading at this point. Then insert the feeler gauge at different positions on the wall to obtain unevenness readings at different positions on the wall. In the traditional inspection method, the obtained wall unevenness readings are discrete. Secondly, when moving the feeler gauge and reinserting it, it is difficult to accurately know the position of the insertion point, that is, the feeler gauge reading is difficult to accurately correspond to the wall position. Utility Model Content

[0003] The utility model provides a wall surface flatness testing device, which is used to solve the problems that the wall surface unevenness readings obtained in the traditional detection method are discrete and the feeler gauge readings are difficult to accurately correspond to the wall surface position.

[0004] In order to overcome the above problems or at least partially solve the above problems, the utility model provides a wall flatness testing device, comprising a straightedge and a bracket installed on the straightedge, a distance measuring device is fixed on the bracket, a measuring head of the distance measuring device is fixed to the upper end of the feeler gauge, the lower end of the feeler gauge is arranged on the side of the straightedge close to the wall, and the inclined surface of the lower end of the feeler gauge faces the straightedge; the feeler gauge and the straightedge are vertically arranged, a distance measuring wheel is provided on the straightedge, when the straightedge moves along the wall, the distance measuring wheel is used to measure the movement of the straightedge, and the distance measuring device and the distance measuring wheel are respectively connected to the digital display screen for communication.

[0005] Preferably, the distance measuring device is a displacement meter, and a pointer of the displacement meter is fixed to the upper end of the feeler gauge.

[0006] Preferably, the distance measuring device is a dial indicator, and the probe of the dial indicator is fixed to the upper end of the feeler gauge.

[0007] Preferably, the displacement meter is connected to the digital display screen via a cable passing through the bracket.

[0008] Preferably, the bracket is L-shaped.

[0009] Preferably, the distance measuring wheel is arranged at one end of the ruler, and an elastic member is arranged between the distance measuring wheel and the ruler, and the elastic member is used to make the distance measuring wheel close to the wall.

[0010] Preferably, the ruler is arranged horizontally on the wall.

[0011] Preferably, the digital display screen is fixed on a bracket.

[0012] Compared with the prior art, in the utility model, after obtaining the coordinate position of the initial point and the gap width value, the ruler is moved, and the insertion value of the feeler gauge and the movement amount of the ruler are obtained by the distance measuring device and the distance measuring wheel respectively, and then the coordinate position of the current measurement point is obtained by the movement amount of the feeler gauge and the coordinate position of the last measurement point. The gap width value of the current measurement point is obtained by the insertion value of the feeler gauge and the tangent function formula. Through this measurement method, the gap width value can be made to correspond to the position of the wall measurement point one by one, and continuous measurement is achieved. The utility model has a simple overall structure, is easy to operate, can perform measurements quickly, and is highly efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model in which the feeler gauge is extended into the space between the wall and the ruler;

[0016] Figure 3 It is a structural schematic diagram of the feeler gauge of the utility model.

[0017] Reference numerals:

[0018] 1. Ruler, 2. Bracket, 3. Distance measuring device, 4. Feeler gauge, 41. Inclined surface, 5. Wall, 6. Distance measuring wheel, 7. Digital display screen, 8. Cable. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See attached Figure 1-2The present embodiment provides a wall flatness testing device, including a ruler 1 and a bracket 2 mounted on the ruler 1, a distance measuring device 3 is fixed on the bracket 2, a measuring head of the distance measuring device 3 is fixed to the upper end of a feeler gauge 4, the lower end of the feeler gauge 4 is arranged on the side of the ruler 1 close to the wall 5, and the inclined surface 41 of the lower end of the feeler gauge 4 faces the ruler 1; the feeler gauge 4 and the ruler 1 are vertically arranged, and a distance measuring wheel 6 is provided on the ruler 1. When the ruler 1 moves along the wall 5, the distance measuring wheel 6 is used to measure the movement of the ruler 1, and the distance measuring device 3 and the distance measuring wheel 6 are respectively connected to the digital display screen 7 for communication. In traditional measurement, after the feeler gauge 4 measures the width of a gap, when the feeler gauge 4 is moved to another place for measurement, it is difficult to know the movement amount, and it is also difficult to know the position of the measuring point. Secondly, the data obtained by this measurement method is discrete, not continuous. In the present invention, the lower end of the feeler gauge 4 is inserted into the gap between the wall surface 5 and the ruler 1 to obtain the gap width at the initial point, and then the ruler 1 is moved to measure the gap width at the next position. One measurement method is to move the ruler 1 from top to bottom, and the feeler gauge 4 moves downward with the ruler 1. When the gap width becomes larger, the feeler gauge 4 is inserted deeper; when the gap width becomes smaller, the feeler gauge 4 is inserted shallower; the measuring head of the distance measuring device 3 moves downward with the feeler gauge 4, so that the insertion value h of the feeler gauge 4 can be obtained (h is the depth of the feeler gauge 4 inserted into the wall surface 5 and the ruler 1), and the gap width μ is obtained by the formula μ=h·tan(θ), refer to the attached Figure 3 , θ is the angle at the inclined surface 41 of the feeler gauge 4. The amount of downward movement of the ruler 1 is measured by the distance measuring wheel 6, and then the coordinate position of the measuring point can be determined according to the coordinate position of the initial point, so that the gap width value corresponds to the position of the measuring point on the wall 5. During the movement, the distance measuring wheel 6 and the distance measuring device 3 will transmit the measured value to the digital display screen 7 in real time. The digital display screen 7 is used to store and display the gap width value of each measuring point, so as to achieve continuous measurement of the feeler gauge 4. This measurement method can better reflect the actual situation. The utility model is simple to operate and has good measurement effect. Specifically, the insertion value h of the feeler gauge 4 can be measured by the distance measuring device 3, and the coordinate position of the measuring point can be obtained according to the measured value of the distance measuring wheel 6 and the coordinate position of the initial point. Another measurement method is to move the ruler 1 horizontally. When the ruler 1 moves horizontally along the wall 5, the feeler gauge 4 is provided with a rounded corner structure on one side of the forward direction of the ruler 1. The feeler gauge 4 moves laterally with the straight edge 1. When the gap width increases, the feeler gauge 4 is inserted deeper; when the gap width decreases, the feeler gauge 4 is inserted shallower. In this process, the distance measuring wheel 6 and the distance measuring device 3 respectively obtain the movement amount of the straight edge 1 and the insertion value h of the feeler gauge 4, and then obtain the coordinate position of the measuring point and the gap width value according to the movement amount and the insertion value.

[0021] After obtaining the gap width value of wall 5, the average gap width of the measuring line can be obtained by formulas (1) and (2): and the standard deviation of the sideline gap width σ μ, and the flatness level of wall 5 can be obtained by the average width of the gap between the measuring lines and the standard deviation of the sideline gap width σ μ express.

[0022]

[0023]

[0024] Formulas (1) and (2) are both prior art, that is, after obtaining the gap width value of the wall 5, the flatness level of the wall 5 can be obtained by the prior art.

[0025] An implementation method of the distance measuring device 3: The distance measuring device 3 is a displacement meter, the pointer of the displacement meter is fixed to the upper end of the feeler gauge 4, and when the feeler gauge 4 moves up and down with the ruler 1, it will drive the pointer of the displacement meter to move up and down, thereby obtaining the insertion value of the feeler gauge 4.

[0026] Another implementation of the distance measuring device 3: The distance measuring device 3 is a dial indicator, the probe of the dial indicator is fixed to the upper end of the feeler gauge 4, and when the feeler gauge 4 moves up and down with the ruler 1, it will drive the probe of the dial indicator to move up and down, thereby obtaining the insertion value of the feeler gauge 4.

[0027] As another implementation of the present utility model: the displacement meter passes through the bracket 2 and is connected to the digital display screen 7 via a cable 8 .

[0028] Specifically, the displacement meter is the intelligent universal displacement meter JMDL-21XXAT / AD produced by Jinma Measurement and Control. The upper end of the intelligent universal displacement meter JMDL-21XXAT / AD can be connected to the bracket 2 through a spring to provide a downward driving force to the feeler gauge 4, so that the feeler gauge 4 can be better extended between the wall 5 and the ruler 1.

[0029] Specifically, the displacement meter is connected to the feeler gauge 4 on a side close to the ruler 1 to avoid interference with the wall 5 .

[0030] As another implementation of the present invention: the bracket 2 is L-shaped.

[0031] As another embodiment of the present utility model: the distance measuring wheel 6 is arranged at one end of the ruler 1, and an elastic member is arranged between the distance measuring wheel 6 and the ruler 1, and the elastic member is used to make the distance measuring wheel 6 close to the wall 5. In one embodiment, the elastic member is an elastic iron sheet, one end of the iron sheet is fixed to the ruler 1, and the other end is fixed to the distance measuring wheel 6, and the distance measuring wheel 6 can always be attached to the wall 5 by the elastic force of the iron sheet. In another embodiment: a connecting plate is fixed to the end of the ruler 1, and the distance measuring wheel 6 is fixed to the connecting plate by a spring, and the distance measuring wheel 6 can always be attached to the wall 5 by the elastic force of the spring.

[0032] Specifically, the ruler 1 is disposed horizontally on the wall 5 .

[0033] As another embodiment of the present invention: the digital display screen 7 is fixed on the bracket 2 and connected to the distance measuring wheel 6 through the cable 8.

[0034] In the utility model, after obtaining the coordinate position and gap width value of the initial point, the ruler 1 is moved, and the insertion value of the feeler gauge 4 and the movement amount of the ruler 1 are obtained by the distance measuring device 3 and the distance measuring wheel 6, respectively, and then the coordinate position of the current measurement point is obtained by the movement amount of the ruler 1 and the coordinate position of the last measurement point. The gap width value of the current measurement point is obtained by the insertion value of the feeler gauge 4 and the tangent function formula. Through this measurement method, the gap width value can be made to correspond to the measurement point position of the wall 5 one by one, and continuous measurement is achieved. The utility model has a simple overall structure, is easy to operate, can perform measurements quickly, and is highly efficient.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A wall flatness testing device, characterized in that: The invention comprises a straightedge and a bracket installed on the straightedge, a distance measuring device is fixed on the bracket, a measuring head of the distance measuring device is fixed to the upper end of the feeler gauge, the lower end of the feeler gauge is arranged on the side of the straightedge close to the wall, and the inclined surface of the lower end of the feeler gauge faces the straightedge; the feeler gauge and the straightedge are arranged vertically, a distance measuring wheel is arranged on the straightedge, when the straightedge moves along the wall, the distance measuring wheel is used to measure the movement amount of the straightedge, and the distance measuring device and the distance measuring wheel are respectively connected to the digital display screen for communication.

2. The wall flatness testing device according to claim 1, characterized in that: The distance measuring device is a displacement meter, and a pointer of the displacement meter is fixed to the upper end of the feeler gauge.

3. The wall flatness testing device according to claim 1, characterized in that: The distance measuring device is a dial indicator, and the probe of the dial indicator is fixed to the upper end of the feeler gauge.

4. The wall flatness testing device according to claim 2, characterized in that: The displacement meter passes through the bracket and is connected to the digital display screen via a cable.

5. The wall flatness testing device according to claim 1, characterized in that: The bracket is L-shaped.

6. The wall flatness testing device according to claim 1, characterized in that: The distance measuring wheel is arranged at one end of the ruler, and an elastic member is arranged between the distance measuring wheel and the ruler, and the elastic member is used to make the distance measuring wheel close to the wall surface.

7. The wall flatness testing device according to claim 5, characterized in that: The ruler is arranged horizontally on the wall.

8. The wall flatness testing device according to claim 7, characterized in that: The digital display screen is fixed on the bracket.

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