CN113945156A - Concrete test piece side length measuring method and measuring device - Google Patents
Concrete test piece side length measuring method and measuring device Download PDFInfo
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- CN113945156A CN113945156A CN202111308936.7A CN202111308936A CN113945156A CN 113945156 A CN113945156 A CN 113945156A CN 202111308936 A CN202111308936 A CN 202111308936A CN 113945156 A CN113945156 A CN 113945156A
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- 238000012360 testing method Methods 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 claims description 24
- 238000012545 processing Methods 0.000 claims description 12
- 238000011056 performance test Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
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- 230000004048 modification Effects 0.000 description 2
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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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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Abstract
The invention belongs to the technical field of concrete test piece performance tests, and particularly relates to a method and a device for measuring the side length of a concrete test piece. The invention discloses a method for measuring the side length of a concrete test piece, which comprises the following steps: taking an X surface, a Y surface and a Z surface of three reference planes; then taking a reference point A, a reference point B and a reference point C; respectively measuring the distance between the point A and the surface X and the distance between the point B and the surface Y; the distance between the point C and the surface Z; placing the concrete test piece on the Z surface; attaching two side walls of the concrete sample to an X surface and a Y surface, setting the side surface of the concrete sample opposite to the X surface as an X ' surface, setting the side surface opposite to the Y surface as a Y ' surface, and setting the side surface opposite to the Z surface as a Z ' surface; respectively measuring the distance between the point A and the surface X'; the distance between the B point and the Y' surface; the distance between the point C and the surface Z'; and subtracting the distance between the reference point and the reference surface and the distance between the reference point and the side surface of the concrete test piece, and calculating an average, namely the side length size of the concrete test piece.
Description
Technical Field
The invention belongs to the technical field of concrete test piece performance tests, and particularly relates to a method and a device for measuring the side length of a concrete test piece.
Background
The compressive strength index of concrete is the most important strength index. Generally, a cubic concrete test piece is used for measuring the compressive strength of concrete and is used as a basis for evaluating the strength grade of the concrete. Due to the influence of the height of the size of the test piece, the maximum force value for crushing the test piece is different, and the calculated compressive strength value is also different, so that the size of the concrete test piece needs to be accurately measured before the compressive strength test is carried out on the concrete test piece. At present, the side length and the height of a concrete test piece are mostly measured by a vernier caliper, the error of the measurement result is large, and the working efficiency is low.
In the chinese patent application with publication number CN112620139A, a device and a method for detecting the size of a concrete specimen are disclosed, wherein when measuring the size of the concrete specimen, laser displacement sensors are required to be arranged on eight surfaces of the specimen, and the side length of each edge of the specimen is calculated and obtained based on the distance between the corresponding laser displacement sensors on the opposite surfaces of the specimen and the distance between each laser displacement sensor and the surface of the specimen.
The measuring method has low efficiency and is not suitable for measuring the sizes of large-batch concrete test pieces.
Disclosure of Invention
The invention provides a concrete test piece side length measuring method for overcoming the defect of low efficiency of the measuring method in the prior art, which has high measuring efficiency and is suitable for measuring the side length of large-batch concrete test pieces.
In order to solve the technical problems, the invention adopts the technical scheme that:
the invention provides a method for measuring the side length of a concrete test piece, which comprises the following steps:
s1, determining three mutually vertical reference planes which are an X plane, a Y plane and a Z plane respectively; taking n datum points A and n datum points B which do not belong to the X surface and the Y surface on the Z surface, and then taking n datum points C which do not belong to the X surface, the Y surface and the Z surface; the point C, the point A and the point B are positioned on the same side of the X surface and the Y surface;
n is a positive integer greater than or equal to 1;
s2, respectively measuring: distances between n points a and the X plane: 1AX, 2AX, …, nAX; distances between n B points and the Y plane: 1BY, 2BY, …, nBY; distances 1CZ, 2CZ, … and nCZ between the n C points and the Z surface;
s3, placing a concrete test piece to be tested on the Z surface, wherein the concrete test piece to be tested, the point A and the point B are positioned on the same side of the X surface and the Y surface; respectively superposing two adjacent side walls of the concrete test piece to be tested with an X surface and a Y surface, setting the side surface of the concrete test piece opposite to the X surface as an X ' surface, setting the side surface opposite to the Y surface as a Y ' surface, and setting the side surface opposite to the Z surface as a Z ' surface;
s4, respectively measuring: distances 1AX ', 2 AX', …, nAX 'between the n A points and the X' plane; distances between the n B points and the Y 'surface are 1 BY', 2BY ', … and nBY'; distances 1CZ ', 2 CZ', … and nCZ 'between the n C points and the Z' surface;
s5, calculating the distance XX 'between the X surface and the X' surface:
distance YY 'between Y plane and Y' plane:
distance ZZ 'between Z and Z':
the values of XX ', YY ' and ZZ ' are the length, width and height dimensions of the concrete sample to be tested.
In the method, the concrete test pieces are all cubic, so that the X, Y, Z surfaces are perpendicular to each other and can be simultaneously attached to the long and wide surfaces, the long and high surfaces and the high and wide surfaces of the concrete test pieces. After the three groups of data are determined, the distance between each A point and the X surface, the distance between each B point and the Y surface and the distance between each C point and the Z surface are measured, the distance between each A point and the X ' surface of the concrete test piece, the distance between each B point and the Y ' surface of the concrete test piece and the distance between each C point and the Z ' surface of the concrete test piece are measured, and the mean value of the difference value of the two groups of data is calculated, so that the distance between the two opposite surfaces of the concrete test piece can be obtained.
Further, in S2, storing the 1AX, 2AX, …, nAX, 1BY, 2BY, …, nBY, 1CZ, 2CZ, …, nCZ is further included.
Further, the distance AX between the point a and the X surface, the distance BY between the point B and the Y surface, the distance CZ between the point C and the Z surface, the distance AX between the point a and the X 'surface, the distance BY between the point B and the Y' surface, and the distance CZ 'between the point C and the Z' surface are measured BY a laser distance meter.
The method further comprises the steps that a plurality of first laser range finders and a plurality of second laser range finders are placed on the Z surface, the transmitting ends of the first laser range finders are arranged right opposite to the X surface, and the transmitting ends of the second laser range finders are arranged right opposite to the Y surface; arranging a plurality of third laser range finders above the Z surface, wherein the transmitting ends of the third laser range finders are arranged right opposite to the Z surface, and the third laser range finders, the first laser range finders and the second laser range finders are positioned on the same side of the X surface and the Y surface; the emitting end of the first laser range finder is set as a point A, the emitting end of the second laser range finder is set as a point B, and the emitting end of the third laser range finder is set as a point C.
In addition, the invention also provides a concrete test piece side length measuring device which comprises an operation table, wherein a first reference block and a second reference block are installed on the top wall of the operation table, a first reference surface vertical to the top wall of the operation table is arranged on the first reference block, a second reference surface vertical to the top wall of the operation table is arranged on the second reference block, the second reference surface is vertical to the first reference surface, and a detection area for placing a concrete test piece is arranged on the periphery of the top wall of the operation table by the first reference surface and the second reference surface; and the operating platform is also provided with a plurality of first laser distance meters for vertically emitting laser to the first reference surface, a plurality of second laser distance meters for vertically emitting laser to the second reference surface and a third laser distance meter for vertically emitting laser to the detection area.
Further, still install the support on the operation panel, third laser range finder movable mounting be in on the support, third laser range finder's activity direction is parallel with the operation panel top surface.
Further, the support includes fixed part and movable part, the fixed part is fixed to be set up on the operation platform, movable part movable mounting is on the fixed part, the activity direction of movable part is perpendicular with the activity direction of third laser range finder.
Furthermore, a plurality of first driving pieces and a plurality of second driving pieces are further installed on the workbench, the moving direction of the output ends of the first driving pieces is perpendicular to the first reference surface, and the moving direction of the output ends of the second driving pieces is perpendicular to the second reference surface.
Furthermore, a push plate is arranged at the output ends of the first driving piece and the second driving piece.
And the data processing device is electrically connected with the first laser range finder, the second laser range finder and the third laser range finder.
Compared with the prior art, the invention has the beneficial effects that:
1. when the concrete test piece is measured by the method of the invention, the distance between each A point and the X surface, the distance between each B point and the Y surface and the distance between each C point and the Z surface are all constant values, after the three groups of data are determined, measuring the distance between each A point and the X ' surface of the concrete test piece, the distance between each B point and the Y ' surface of the concrete test piece and the distance between each C point and the Z ' surface of the concrete test piece, and calculating the mean value of the difference values of the two groups of data, the distance between the two opposite surfaces of the concrete test piece can be obtained, because the concrete test piece is cubic, namely the length, width and height values of the concrete test piece, the method can obtain the accurate side length size of the concrete test piece by only acquiring six groups of data, and the method in the prior art can obtain the accurate side length size of the concrete test piece by acquiring twelve groups of data;
2. when the method is used for measuring the size of the concrete test piece, the measuring position of the concrete test piece can be quickly determined by respectively attaching the three adjacent surfaces of the concrete test piece and the X, Y, Z surfaces, and compared with the prior art that the distance between each surface of the concrete test piece and a reference point needs to be measured in advance to determine the measuring position of the concrete test piece, the efficiency is higher;
3. in the device, the first driving piece and the second driving piece are arranged on the operation platform, so that the concrete test piece can be driven when placed on the detection area, and the concrete test piece is ensured to be attached to the first reference surface and the second reference surface.
Drawings
FIG. 1 is a schematic view of an overall structure of an embodiment of a concrete test piece side length measuring device according to the present invention;
FIG. 2 is a schematic view of a measuring state of an embodiment of a method for measuring side length of a concrete test piece according to the present invention;
FIG. 3 is a schematic view of another angle measurement state in an embodiment of a method for measuring a side length of a concrete specimen according to the present invention;
FIG. 4 is a flowchart of an embodiment of a method for measuring the side length of a concrete test piece according to the present invention.
The attached drawings are marked as follows: 1. an operation table; 11. a detection zone; 2. a first reference block; 21. a first reference plane; 3. a second reference block; 31. a second reference plane; 4. a first laser range finder; 5. a second laser rangefinder; 6. a third laser range finder; 7. a support; 71. a fixed part; 72. a movable portion; 721. a chute; 8. a first driving member; 9. a second driving member; 10. pushing the plate; 12. a data processing device; 13. and (5) testing the concrete.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
examples
Referring to fig. 1, an embodiment of a concrete test piece side length measuring device according to the present invention includes a workbench 1, a first reference block 2 and a second reference block 3 are mounted on a top wall of the workbench 1, a first reference surface 21 perpendicular to the top wall of the workbench 1 is disposed on the first reference block 2, a second reference surface 31 perpendicular to the top wall of the workbench 1 is disposed on the second reference block 3, the second reference surface 31 is perpendicular to the first reference surface 21, and a detection area 11 for placing a concrete test piece 13 is surrounded by the first reference surface 21 and the second reference surface 31 on the top wall of the workbench 1; the operation table 1 is further provided with a plurality of first laser distance meters 4 for vertically emitting laser to the first reference surface 21, a plurality of second laser distance meters 5 for vertically emitting laser to the second reference surface 31, and a third laser distance meter 6 for vertically emitting laser to the detection area 11.
Specifically, a rectangular detection area 11 is provided on the top wall of the workbench 1, a first reference block 2 and a second reference block 3 are mounted on the top wall of the workbench 1 on the periphery of the detection area 11, the first reference block 2 and the second reference block 3 are both rectangular, the first reference block 2 and the second reference block 3 are respectively located on two adjacent sides of the detection area 11, and the side surfaces of the first reference block 2 and the second reference block 3 facing the detection area 11 are respectively a first reference surface 21 and a second reference surface 31, so that the first reference surface 21 and the second reference surface 31 are perpendicular to each other. The first laser rangefinder 4 is installed at a position vertically opposite to the first reference surface 21 so that the laser light emitted from the first laser rangefinder 4 can be perpendicular to the first reference surface 21, and the second laser rangefinder 5 is installed at a position vertically opposite to the second reference surface 31 so that the laser light emitted from the second laser rangefinder 5 can be perpendicular to the second reference surface 31.
In one embodiment, a bracket 7 is further mounted on the work table 1, and the third laser distance measuring instrument 6 is movably mounted on the bracket 7. Support 7 installs at operation 1 roof, and third laser range finder 6 installs at support 7 top, is located the top of detection zone 11 simultaneously, and the laser that third laser range finder 6 sent is perpendicular to be emitted towards detection zone 11. The movably installed third laser distance measuring instrument 6 can measure a plurality of distance values by changing the measuring position, thereby obtaining more accurate distance data by averaging the plurality of distance values.
In one embodiment, the bracket 7 includes a fixed portion 71 and a movable portion 72, the fixed portion 71 is fixedly disposed on the work table 1, the movable portion 72 is movably mounted on the fixed portion 71, and a moving direction of the movable portion 72 is perpendicular to a moving direction of the third laser distance meter 6.
Specifically, the fixed portion 71 is n-shaped, the fixed portion 71 is fixedly mounted at an edge position of a top wall of the work table 1by bolts, the top of the fixed portion 71 is movably mounted with a movable portion 72 in a shape of 7 by bolts, a longitudinal direction of the top wall of the fixed portion 71 is parallel to the first reference surface 21, and the movable portion 72 moves the top of the movable portion 72 along the longitudinal direction of the fixed portion 71 and bends toward the detection area 11. A sliding groove 721 is formed in the bent top side wall of the movable portion 72, the extending direction of the sliding groove 721 is parallel to the second reference plane 31, and the third laser distance measuring instrument 6 can move along the sliding groove 721 through the cooperation of the screw and the nut.
In one embodiment, a plurality of first driving members 8 and a plurality of second driving members 9 are further mounted on the working platform 1, the output direction of the output ends of the first driving members 8 is perpendicular to the first reference plane 21, and the output direction of the output ends of the second driving members 9 is perpendicular to the second reference plane 31.
Specifically, the first driving member 8 and the second driving member 9 may be an air cylinder, an electric cylinder or a hydraulic cylinder, and the present embodiment is preferably an air cylinder. After the first driving member 8 finishes acting, the second driving member 9 acts again, so that abrasion of the concrete test piece 13 caused by simultaneous action of the first driving member 8 and the second driving member 9 is avoided. The first driving member 8 and the second driving member 9 are fixed on the top surface of the workbench 1by bolts and located on the periphery of the detection area 11. When the concrete test piece 13 is placed on the detection area 11, the first driving piece 8 drives the concrete test piece 13 to move towards the first reference surface 21, and then the second driving piece 9 pushes the concrete test piece 13 to move towards the second reference surface 31 through the output end, so that the concrete test piece 13 is ensured to be tightly attached to the first reference surface 21 and the second reference surface 31.
In one embodiment, the output ends of the first driving member 8 and the second driving member 9 are provided with a push plate 10. The push plate 10 is rectangular, the push plate 10 is installed at the output ends of the first driving piece 8 and the second driving piece 9 through bolts, when the first driving piece 8 and the second driving piece 9 push the concrete test piece 13, the push plate 10 is in contact with the side wall of the concrete test piece 13, so that the stress area of the concrete test piece 13 is enlarged, the pressure on the concrete test piece 13 is reduced, and the concrete test piece 13 is prevented from being damaged when being pushed.
In one embodiment, the system further comprises a data processing device 12 for collecting, storing and processing data obtained by the first laser range finder 4, the second laser range finder 5 and the third laser range finder 6, wherein the control device is electrically connected with the first laser range finder 4, the second laser range finder 5 and the third laser range finder 6. The data processing device 12 is used for collecting and storing the data collected by the first laser range finder 4, the second laser range finder 5 and the third laser range finder 6, and performing numerical addition, subtraction, multiplication and division on the data, so that a tester can quickly obtain a required result.
Referring to fig. 2 to 4, a method for measuring the side length of the concrete test piece 13 by using the side length measuring device for the concrete test piece 13 includes the following steps:
s1, taking a first reference plane 21, a second reference plane 31 and a detection area 11 plane as reference planes, namely an X plane, a Y plane and a Z plane respectively; taking the transmitting end of the first laser range finder 4 as a point A, the transmitting end of the second laser range finder 5 as a point B, and the transmitting end of the third laser range finder 6 as a point C;
a plurality of points A, B and C can be obtained by moving the first laser range finder 4, the second laser range finder 5 and the third laser range finder 6, a plurality of points A, B and C can also be obtained by setting a plurality of the first laser range finder 4, the second laser range finder 5 and the third laser range finder 6, and one point A, B and C can also be obtained by only setting one first laser range finder 4, the second laser range finder 5 and the third laser range finder 6 without changing the position. In this embodiment, it is preferable to move the first laser distance meter 4, the second laser distance meter 5, and the third laser distance meter 6 three times to obtain the point a, the point B, and the point C;
s2, the first laser range finder 4 measures the distance between the transmitting end and the first reference surface 21 for the first time and records the distance as 1AX, the second laser range finder 5 measures the distance between the transmitting end and the second reference surface 31 for the first time and records the distance as 1BY, and the third laser range finder 6 measures the distance between the transmitting end and the plane of the detection area 11 for the first time and records the distance as 1 CZ; then, moving the first laser range finder 4 by one end distance along the direction parallel to the first reference surface 21, and measuring the distance between the transmitting end and the first reference surface 21 for the second time, and recording as 2 AX; moving the second laser distance meter 5 BY one end distance along the direction parallel to the second reference surface 31, and measuring the distance between the transmitting end and the second reference surface 31 for the second time, and recording as 2 BY; moving the third laser range finder 6 for a distance along the direction parallel to the plane of the detection area 11, and measuring the distance between the transmitting end and the plane of the detection area 11 for the second time, and recording as 2 CZ; moving the first laser distance meter 4, the second laser distance meter 5 and the third laser distance meter 6 again according to the moving direction, and measuring the distance between the first laser distance meter 4 and the first reference surface 21, the distance between the second laser distance meter 5 and the second reference surface 31 and the distance between the third laser distance meter 6 and the plane of the detection area 11 again, which are respectively marked as 3AX, 3BY and 3 CZ; and stores the data using the data processing device 12;
s3, placing the concrete test piece 13 to be tested on the detection area 11, and starting the first driving piece 8 and the second driving piece 9 to enable two adjacent side walls of the concrete test piece 13 to be tested to be respectively attached to the first reference surface 21 and the second reference surface 31; recording the side surface of the concrete test piece 13 opposite to the first reference surface 21 as an X ' surface, recording the side surface opposite to the second reference surface 31 as a Y ' surface, and recording the side surface opposite to the top wall of the workbench 1 as a Z ' surface;
s4, the first laser distance meter 4 measures the distance between the transmitting end and the X 'surface for the first time and records the distance as 1 AX', the second laser distance meter 5 measures the distance between the transmitting end and the Y 'surface for the first time and records the distance as 1 BY', and the third laser distance meter 6 measures the distance between the transmitting end and the Z 'surface for the first time and records the distance as 1 CZ'; then, moving the first laser range finder 4 by one end distance along the direction parallel to the first reference plane 21, and measuring the distance between the transmitting end and the X 'plane for the second time, and recording as 2 AX'; moving the second laser distance meter 5 BY one end distance along the direction parallel to the second reference surface 31, and measuring the distance between the emitting end and the Y 'surface for the second time, and recording as 2 BY'; moving the third laser distance measuring instrument 6 for a distance along the direction parallel to the plane of the detection area 11, and measuring the distance between the transmitting end and the Z 'surface for the second time, and recording as 2 CZ'; moving the first laser distance meter 4, the second laser distance meter 5 and the third laser distance meter 6 again according to the moving direction, and measuring the distance between the first laser distance meter 4 and the X 'surface, the distance between the second laser distance meter 5 and the Y' surface and the distance between the third laser distance meter 6 and the Z 'surface again, which are respectively marked as 3 AX', 3BY 'and 3 CZ'; and stores the data using the data processing device 12; in the three measurements, the measurement positions of the first laser range finder 4, the second laser range finder 5 and the third laser range finder 6 are the same as the measurement positions in S2;
s5, calculating the distance XX 'between the X surface and the X' surface by using the data processing device 12:
distance YY 'between Y plane and Y' plane:
distance ZZ 'between Z and Z':
the values of XX ', YY ', ZZ ' are the length, width, and height dimensions of the concrete sample 13 to be tested.
When the sizes of a plurality of concrete test pieces 13 to be measured need to be measured, the data acquired by the step S2 are stored by the data processing device 12, and only the steps S3-S5 need to be repeated, so that the measurement flow is shortened, and the efficiency of measuring a large number of concrete test pieces 13 is improved.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A method for measuring the side length of a concrete test piece is characterized by comprising the following steps:
s1, determining three mutually vertical reference planes which are an X plane, a Y plane and a Z plane respectively; taking n datum points A and n datum points B which do not belong to the X surface and the Y surface on the Z surface, and then taking n datum points C which do not belong to the X surface, the Y surface and the Z surface; the point C, the point A and the point B are positioned on the same side of the X surface and the Y surface;
n is a positive integer greater than or equal to 1;
s2, respectively measuring: the distances between the n A points and the X surface are respectively as follows: 1AX, 2AX, …, nAX; the distances between the n B points and the Y surface are respectively as follows: 1BY, 2BY, …, nBY; the distances between the n C points and the Z surface are respectively as follows: 1CZ, 2CZ, …, nCZ;
s3, placing the concrete test piece (13) to be tested on the Z surface, wherein the concrete test piece (13) to be tested, the point A and the point B are positioned on the same side of the X surface and the Y surface; respectively superposing two adjacent side walls of a concrete test piece (13) to be tested with an X surface and a Y surface, setting the side surface of the concrete test piece (13) opposite to the X surface as an X ' surface, setting the side surface opposite to the Y surface as a Y ' surface, and setting the side surface opposite to the Z surface as a Z ' surface;
s4, respectively measuring: the distances between the n A points and the X' surface are respectively as follows: 1AX ', 2AX ', …, nAX '; the distances between the n B points and the Y' surface are respectively as follows: 1BY ', 2BY ', …, nBY '; the distances between the n C points and the Z' surface are respectively as follows: 1CZ ', 2CZ ', …, nCZ ';
s5, calculating the distance XX 'between the X surface and the X' surface:
distance YY 'between Y plane and Y' plane:
distance ZZ 'between Z and Z':
wherein, the values of XX ', YY ' and ZZ ' are the length, width and height of the concrete test piece (13) to be tested.
2. The method for measuring the side length of the concrete specimen according to claim 1, wherein in step S2, the method further comprises the steps of storing the distance value: 1AX, 2AX, …, nAX, 1BY, 2BY, …, nBY, 1CZ, 2CZ, …, nCZ.
3. A method for measuring the side length of a concrete specimen as claimed in claim 1, characterized in that a laser range finder is used to measure the distance AX between the A point and the X surface, the distance BY between the B point and the Y surface, the distance CZ between the C point and the Z surface, the distance AX between the A point and the X 'surface, the distance BY between the B point and the Y' surface, and the distance CZ 'between the C point and the Z' surface.
4. The method for measuring the side length of the concrete test piece according to claim 2, wherein in the step S1, the method further comprises the steps of placing a plurality of first laser distance meters (4) and a plurality of second laser distance meters (5) on the Z surface, wherein the emitting end of each first laser distance meter (4) is arranged right opposite to the X surface, and the emitting end of each second laser distance meter (5) is arranged right opposite to the Y surface; arranging a plurality of third laser range finders (6) above the Z surface, wherein the transmitting ends of the third laser range finders (6) are arranged right opposite to the Z surface, and the third laser range finders (6), the first laser range finders (4) and the second laser range finders (5) are positioned on the same side of the X surface and the Y surface; the emitting end of the first laser range finder (4) is set as a point A, the emitting end of the second laser range finder (5) is set as a point B, and the emitting end of the third laser range finder (6) is set as a point C.
5. A concrete test piece side length measuring device applying the measuring method of any one of claims 1 to 3 is characterized by comprising a workbench (1), wherein a first reference block (2) and a second reference block (3) are mounted at the top of the workbench (1), a first reference surface (21) perpendicular to the top surface of the workbench (1) is arranged on the first reference block (2), a second reference surface (31) perpendicular to the top surface of the workbench (1) is arranged on the second reference block (3), the second reference surface (31) is perpendicular to the first reference surface (21), and a detection area (11) for placing a concrete test piece (13) is surrounded on the top of the workbench (1) by the first reference surface (21) and the second reference surface (31); the working platform (1) is further provided with a plurality of first laser distance meters (4) used for vertically emitting laser to the first reference surface (21), a plurality of second laser distance meters (5) used for vertically emitting laser to the second reference surface (31) and a third laser distance meter (6) used for vertically emitting laser to the detection area (11).
6. The concrete test piece side length measuring device according to claim 5, characterized in that a support (7) is further mounted on the workbench (1), and the third laser range finder (6) is movably mounted on the support (7).
7. The concrete test piece side length measuring device according to claim 6, characterized in that the bracket (7) comprises a fixed part (71) and a movable part (72), the fixed part (71) is fixedly arranged on the operation platform (1), the movable part (72) is movably arranged on the fixed part (71), and the moving direction of the movable part (72) is perpendicular to the moving direction of the third laser range finder (6).
8. The concrete test piece side length measuring device according to claim 5, characterized in that a plurality of first driving pieces (8) and a plurality of second driving pieces (9) are further installed on the workbench (1), the moving direction of the output ends of the first driving pieces (8) is perpendicular to the first reference surface (21), and the moving direction of the output ends of the second driving pieces (9) is perpendicular to the second reference surface (31).
9. The concrete test piece side length measuring device according to claim 8, wherein the output ends of the first driving piece (8) and the second driving piece (9) are respectively provided with a push plate (10).
10. The concrete test piece side length measuring device according to claim 5, further comprising a data processing device (12) for collecting, storing and processing data obtained by the first laser range finder (4), the second laser range finder (5) and the third laser range finder (6), wherein the data processing device (12) is electrically connected with the first laser range finder (4), the second laser range finder (5) and the third laser range finder (6).
Priority Applications (1)
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| CN114485518A (en) * | 2022-02-22 | 2022-05-13 | 杭州科技职业技术学院 | Automatic testing arrangement of work piece shape size |
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