CN109900553B - Building concrete compressive strength test detection device and operation method thereof - Google Patents
Building concrete compressive strength test detection device and operation method thereof Download PDFInfo
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Abstract
The invention discloses a building concrete compressive strength test detection device which comprises a workbench, a conveying mechanism, a clamping mechanism, a mounting rack, a display, a high-definition camera, a control box, a press machine, an infrared distance meter, a negative pressure generator, a collection box, an electric push rod, a hose, a collection head and a code scanner, wherein the work platform is arranged on the workbench; the invention also discloses an operation method of the building concrete compressive strength test detection device. The invention has the advantages of reducing the workload of manually carrying the concrete blocks, reducing the energy loss, reducing the residues, changing the force application area, enabling the detection result to be more accurate and the like, and can also avoid the error of the recorded result caused by the wrong label of the concrete block, ensure the accuracy of the recorded detection result and realize the detection of mass samples.
Description
Technical Field
The invention relates to the technical field of concrete detection, in particular to a building concrete compressive strength test detection device and an operation method thereof.
Background
Concrete is one of the most important civil engineering materials of the present generation. The artificial stone is prepared from a cementing material, granular aggregate (also called aggregate), water, an additive and a blending material which are added if necessary according to a certain proportion, and is formed by uniformly stirring, compacting, forming, curing and hardening. One of the main indexes of concrete quality is compressive strength, which is proportional to the strength of cement used for concrete, and calculated according to a formula, when the water cement ratio is equal, the compressive strength of concrete prepared by high-grade cement is much higher than that of concrete prepared by low-grade cement. Generally, the water cement ratio is inversely proportional to the concrete strength, and when the water cement ratio is not changed, the concrete strength is improved by increasing the cement dosage, and only the concrete workability can be improved, and the shrinkage and deformation of the concrete are increased.
In order to test the influence of different water-cement ratios on the concrete strength and ensure the quality of concrete, the compressive strength of concrete blocks with different water-cement ratios needs to be detected, for example, chinese patent CN 104266905B proposes a concrete compressive strength detection device, which can reduce the labor intensity of detection personnel in the concrete compressive strength detection process, but in the process of detecting different concrete blocks, the concrete blocks can vibrate in the conveying process, so that slag may be generated on the concrete blocks, the slag may change the force application area between the detection device and the concrete blocks, the accuracy of the detection result is affected, and in the detection process, the detection result may be influenced by other reasons, or the detection result is disordered, resulting in serious errors in work.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the building concrete compressive strength test detection device and the operation method thereof, which have the advantages of higher detection precision and the like and solve the problem of low detection precision of the traditional detection device during detection.
In order to achieve the purpose of higher detection precision, the invention provides the following technical scheme:
a building concrete compressive strength test detection device comprises a workbench, a conveying mechanism, a clamping mechanism, a mounting rack, a display, a high-definition camera, a control box, a press machine, an infrared distance meter, a negative pressure generator, a collecting box, an electric push rod, a hose, a collecting head and a code scanner, wherein the workbench is provided with the conveying mechanism for conveying concrete blocks, the middle part of the workbench is provided with the clamping mechanism for fixing the concrete blocks, and the workbench is provided with the mounting rack positioned above the conveying mechanism;
the infrared distance measuring device comprises a mounting frame, a display, a high-definition camera, a press machine and an infrared distance measuring instrument, wherein the display is installed on the right side of the mounting frame, the high-definition camera positioned on the left side of the display is installed at the top of the mounting frame, a control box positioned on the left side of the high-definition camera is installed on the mounting frame, the press machine is installed in the middle of the mounting frame, and the infrared distance measuring instrument opposite to a clamping mechanism is installed on the press machine;
the vacuum cleaner is characterized in that a negative pressure generator is installed at the top of the mounting frame, a detachable collecting box connected with the negative pressure generator is installed on the mounting frame, an electric push rod is installed on the right side of the bottom of the collecting box, a hose driven by the electric push rod is installed at the bottom of the collecting box, a collecting head right facing the clamping mechanism is installed at the bottom of the hose, and a code scanner is installed on the left side of the mounting frame;
and the conveying mechanism comprises two guide wheels arranged on the workbench, the two guide wheels are in transmission connection through a conveying belt, and the workbench is provided with a conveying motor fixedly connected with the axle center of one of the guide wheels.
And, clamping mechanism is including installing the fixed plate that just is located the conveyor belt below of upside on the workstation, the inside sliding connection of fixed plate has two parallel movable plates of back-and-forth movement, and the middle part threaded connection of two movable plates has same threaded rod, and set up respectively on two movable plates with the threaded rod adaptation and opposite direction's screw thread, the back of workstation is installed and is used for driving the tight motor of clamp of threaded rod, installs the clamp plate that is located conveyor belt front and back both sides on two movable plates respectively.
And the inner bottom wall of the fixed plate is provided with two guide grooves positioned at the left side and the right side, and the guide plates fixedly connected with the bottom of the moving plate are connected in a sliding manner inside the guide grooves.
Moreover, the control box comprises a central processing unit, a memory, a recording module, a conversion module, a timing module, a comparison module, a motor controller and a push rod controller, the infrared distance measuring instrument, the press machine, the bar scanner, the push rod controller, the motor controller and the negative pressure generator are all in two-way electric connection with the conversion module, the output end of the conversion module is electrically connected with the input end of the central processing unit, the infrared distance measuring instrument, the press machine, the high-definition camera, the push rod controller, the motor controller, the bar scanner and the negative pressure generator are all in two-way electric connection with the timing module, the timing module is in two-way electric connection with the central processing unit, the output end of the high-definition camera is electrically connected with the input end of the central processing unit, the input end of the memory, the input end of the recording module and the input end of the comparison module are all in electric connection with the output end of the central processing unit, the output end of the comparison module is electrically connected with the input end of the display, and the output end of the recording module is electrically connected with the input end of the memory.
And, concrete press or universal tester are selected to the press, press the depression bar is installed to the output of press.
The invention aims to solve another technical problem of providing an operation method of a building concrete compressive strength test detection device, which comprises the following steps:
a, labeling a concrete block to be detected, placing the concrete block on the right side of a conveying belt, and driving a guide wheel and the conveying belt to move after a conveying motor is connected and started with a mains supply to convey and move the concrete block, so that the workload of manually conveying the concrete block is reduced;
b, after the concrete block passes through the high-definition camera, the high-definition camera collects the picture of the concrete block, the central processing unit can receive the picture signal, the time of the concrete block conveyed to the clamping mechanism is calculated by matching with the rotating speed of the conveying motor, and the time information is transmitted to the timing module;
the C timing module can be matched with the motor controller to control the steering and rotating speed of the clamping motor according to time information transmitted by the central processing unit, the clamping motor is connected with mains supply and drives the threaded rod to rotate under the control of the motor controller, when the threaded rod rotates in the middle of the moving plate, the two moving plates and the clamping plate can be driven to be close to each other to clamp the concrete block on the conveying belt, and in the process, the conveying motor stops rotating under the control of the motor controller;
d, after the concrete block is fixed, the infrared distance meter measures the distance between the press and the concrete block and transmits the distance information to the central processing unit, the central processing unit controls the electric push rod to extend according to the distance information in cooperation with the timing module and the push rod controller, so that the collecting head is close to the concrete block, then the negative pressure generator is controlled to be started, residues on the concrete block are absorbed into the collecting box through the hose and the collecting head, and the condition that no residues exist on the concrete block is guaranteed;
the central processing unit controls the press machine to apply pressure to the press rod, the pressure on the press rod is transmitted to the concrete block, the compression strength of the concrete block can be tested, the test result can be transmitted to the central processing unit and is recorded into the memory through the recording module, the stress conditions of the multiple groups of concrete blocks can be analyzed and compared through the comparison module, and the compared data can be displayed through the display;
f awaits measuring the completion back, presss from both sides tight motor reversal, with the clamp plate and concrete piece separation, then the conveying motor starts, carries the concrete piece after will testing left, and the bar code scanner scans the label of pasting in to step A, is convenient for to the data record of different concrete pieces, can also compare with the data that high definition digtal camera shot, guarantees the accuracy of test result.
(III) advantageous effects
Compared with the prior art, the invention provides a building concrete compressive strength test detection device and an operation method thereof, and the device has the following beneficial effects:
1. according to the invention, the concrete block to be detected is labeled and then placed on the right side of the conveying belt, and the conveying motor is connected with the mains supply and started to drive the guide wheel and the conveying belt to move so as to convey and move the concrete block, so that the workload of manually conveying the concrete block is reduced, and the detection of mass samples can be realized.
2. According to the time information transmitted by the central processing unit, the timing module can be matched with the motor controller to control the steering direction and the rotating speed of the clamping motor, the clamping motor is connected with mains supply and drives the threaded rod to rotate under the control of the motor controller, when the threaded rod rotates in the middle of the moving plate, the two moving plates and the clamping plate can be driven to be close to each other to clamp the concrete block on the conveying belt, and in the process, the conveying motor stops rotating under the control of the motor controller, so that the energy loss can be reduced in the detection process, and the energy-saving and environment-friendly effects are achieved.
3. According to the invention, after the concrete block is fixed, the infrared distance meter measures the distance between the press machine and the concrete block and transmits the distance information to the central processing unit, the central processing unit controls the electric push rod to extend according to the distance information in cooperation with the timing module and the push rod controller, so that the collecting head is close to the concrete block, then the negative pressure generator is controlled to be started, residues on the concrete block are absorbed into the collecting box through the hose and the collecting head, no residues on the concrete block are ensured, residues on the concrete block can be effectively removed, the residues are reduced, the force application area is changed, the pressure applied on the concrete block by the press machine is more accurate, and the detection result is more accurate.
4. The invention can test the compression strength of the concrete blocks, the test result can be transmitted to the central processing unit and recorded into the memory through the recording module, the stress conditions of a plurality of groups of concrete blocks can be analyzed and compared through the comparison module, the compared data can be displayed through the display, and the test result can be compared, analyzed and displayed in real time.
5. After the test is finished, the clamping motor is reversed to separate the clamping plate from the concrete block, then the conveying motor is started to convey the tested concrete block to the left, the code scanner scans the label attached in the step A, so that data recording of different concrete blocks is facilitated, the data can be compared with data shot by a high-definition camera, the accuracy of a test result is ensured, errors of a recording result caused by wrong labels of the concrete blocks are avoided, and the accuracy of detection result recording is ensured.
Drawings
FIG. 1 is a schematic structural view of a testing device for testing compressive strength of building concrete according to the present invention;
FIG. 2 is a right partial cross-sectional view of a test detection device for compressive strength of building concrete according to the present invention;
FIG. 3 is an enlarged view of part A in FIG. 1 of the testing apparatus for testing compressive strength of building concrete according to the present invention;
FIG. 4 is an enlarged view of part B in FIG. 2 of the testing apparatus for testing compressive strength of building concrete according to the present invention;
fig. 5 is a system diagram of a building concrete compressive strength test detection device provided by the invention.
In the figure: the device comprises a workbench, a conveying mechanism 2, a clamping mechanism 3, a mounting rack 4, a display 5, a high-definition camera 6, a control box 7, a press 8, an infrared range finder 9, a negative pressure generator 10, a collecting box 11, an electric push rod 12, a hose 13, a collecting head 14, a code scanner 15, a guide wheel 16, a conveying belt 17, a conveying motor 18, a fixing plate 19, a moving plate 20, a threaded rod 21, a clamping motor 22, a clamping plate 23, a guide groove 24, a guide plate 25 and a pressing rod 26.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a building concrete compressive strength test detection device comprises a workbench 1, a conveying mechanism 2, a clamping mechanism 3, a mounting rack 4, a display 5 (17S 4 LSB), a high-definition camera 6, a control box 7, a press machine 8(DYE-2000), an infrared distance meter 9(GLM4000), a negative pressure generator 10(ZL212), a collection box 11, an electric push rod 12, a hose 13, a collection head 14 and a code scanner 15(0H 4520);
a conveying mechanism 2 for conveying concrete blocks is arranged on the workbench 1, a clamping mechanism 3 for fixing the concrete blocks is arranged in the middle of the workbench 1, and an installation frame 4 positioned above the conveying mechanism 2 is arranged on the workbench 1;
a display 5 is installed on the right side of the installation frame 4, a high-definition camera 6 located on the left side of the display 5 is installed at the top of the installation frame 4, a control box 7 located on the left side of the high-definition camera 6 is installed on the installation frame 4, a press machine 8 is installed in the middle of the installation frame 4, and an infrared distance meter 9 facing the clamping mechanism 3 is installed on the press machine 8;
Further, the conveying mechanism 2 comprises two guide wheels 16 arranged on the workbench 1, the two guide wheels 16 are in transmission connection through a conveying belt 17, and a conveying motor 18(4IK25RGN-C) fixedly connected with the axle center of one guide wheel 16 is arranged on the workbench 1.
Further, the clamping mechanism 3 comprises a fixed plate 19 which is installed on the workbench 1 and located below the conveying belt 17 on the upper side, two parallel movable plates 20 capable of moving back and forth are connected inside the fixed plate 19 in a sliding mode, the middle portions of the two movable plates 20 are in threaded connection with the same threaded rod 21, threads which are matched with the threaded rod 21 and are opposite in direction are formed in the two movable plates 20 respectively, a clamping motor 22(5M120GN-CC) used for driving the threaded rod 21 is installed behind the workbench 1, and clamping plates 23 located on the front side and the rear side of the conveying belt 17 are installed on the two movable plates 20 respectively.
Further, two guide grooves 24 are formed in the inner bottom wall of the fixed plate 19 at both left and right sides, and guide plates 25 fixedly connected to the bottom of the moving plate 20 are slidably connected to the inside of the guide grooves 24.
Further, the control box 7 comprises a central processing unit, a memory, a recording module, a conversion module, a timing module, a comparison module, a motor controller (LJK-III) and a push rod controller (TJC-K-220) 200, wherein the infrared distance meter 9, the press machine 8, the code scanner 15, the push rod controller, the motor controller and the negative pressure generator 10 are all in two-way electrical connection with the conversion module, the output end of the conversion module is electrically connected with the input end of the central processing unit, the infrared distance meter 9, the press machine 8, the high-definition camera 6, the push rod controller, the motor controller, the code scanner 15 and the negative pressure generator 10 are all in two-way electrical connection with the timing module, the timing module is in two-way electrical connection with the central processing unit, the output end of the high-definition camera 6 is electrically connected with the input end of the central processing unit, the input end of the memory, the input end of the recording module and the input end of the comparison module are all in electrical connection with the output end of the central processing unit, the output end of the comparison module is electrically connected with the input end of the display 5, and the output end of the recording module is electrically connected with the input end of the memory.
Further, the press machine 8 is a concrete press machine or a universal testing machine, and the output end of the press machine 8 is provided with a press rod 26.
The invention aims to solve another technical problem of providing an operation method of a building concrete compressive strength test detection device, which comprises the following steps:
a, labeling a concrete block to be detected, placing the concrete block on the right side of a conveying belt 17, and driving a guide wheel 16 and the conveying belt 17 to move after a conveying motor 18 is connected with a mains supply and started to convey and move the concrete block, so that the workload of manually conveying the concrete block is reduced;
b, after the concrete block passes through the high-definition camera 6, the high-definition camera 6 collects the picture of the concrete block, the central processing unit can receive the picture signal, the time of the concrete block conveyed to the clamping mechanism 3 is calculated by matching with the rotating speed of the conveying motor 18, and the time information is transmitted to the timing module;
the C timing module can be matched with a motor controller to control the steering direction and the rotating speed of a clamping motor 22 according to time information transmitted by a central processing unit, the clamping motor 22 is connected with a mains supply and drives a threaded rod 21 to rotate under the control of the motor controller, when the threaded rod 21 rotates in the middle of a moving plate 20, the two moving plates 20 and a clamping plate 23 can be driven to be close to each other to clamp a concrete block on a conveying belt 17, and in the process, the conveying motor 18 stops rotating under the control of the motor controller;
d, after the concrete block is fixed, the infrared distance meter 9 measures the distance between the press machine 8 and the concrete block and transmits distance information to the central processing unit, the central processing unit controls the electric push rod 12 to extend according to the distance information in cooperation with the timing module and the push rod controller, so that the collecting head 14 is close to the concrete block, then the negative pressure generator 10 is controlled to be started, residues on the concrete block are absorbed into the collecting box 11 through the hose 13 and the collecting head 14, and the fact that no residues exist on the concrete block is guaranteed;
the central processing unit controls the press machine 8 to apply pressure to the press rod 26, the pressure on the press rod 26 is transmitted to the concrete block, the compression strength of the concrete block can be tested, the test result can be transmitted to the central processing unit and is recorded into the memory through the recording module, the stress conditions of a plurality of groups of concrete blocks can be analyzed and compared through the comparison module, and the compared data can be displayed through the display 5;
f awaits measuring the completion back, and the reversal of clamp motor 22 will press from both sides tight board 23 and concrete piece separation, then conveying motor 18 starts, carries the concrete piece after will testing left, and bar code scanner 15 scans the label of pasting in step A, is convenient for to the data record of different concrete pieces, can also compare with the data that high definition digtal camera 6 shot, guarantees the accuracy of test result.
The invention has the beneficial effects that: can carry the removal to the concrete piece by the efficient through conveying mechanism 2, the work load of artifical transport concrete piece has been reduced, and through the cooperation between each part, the switch of each component can be controlled, can be at the in-process loss of energy reduction of detection, it is more energy-concerving and environment-protective, can also effectually clear away the residue on the concrete piece, it changes application of force area to reduce the residue, make the pressure that the press 8 was applyed on the concrete piece more accurate, make the testing result more accurate, and can also avoid leading to the record result mistake because of the grade error of concrete piece, guarantee the accuracy of testing result record.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. An operation method of a building concrete compressive strength test detection device is characterized in that: the method comprises the following steps:
a, labeling a concrete block to be detected, then placing the concrete block on the right side of a conveying belt (17), and driving a guide wheel (16) and the conveying belt (17) to move after a conveying motor (18) is connected and started with a mains supply to convey and move the concrete block;
b, after the concrete block passes through the high-definition camera (6), the high-definition camera (6) collects the picture of the concrete block, the central processing unit can receive the picture signal, and the central processing unit is matched with the rotating speed of the conveying motor (18) to calculate the time of conveying the concrete block to the clamping mechanism (3), and transmits the time information to the timing module;
the C timing module can be matched with the motor controller to control the steering direction and the rotating speed of the clamping motor (22) according to time information transmitted by the central processing unit, the clamping motor (22) is connected with a mains supply and drives the threaded rod (21) to rotate under the control of the motor controller, when the threaded rod (21) rotates in the middle of the moving plate (20), the two moving plates (20) and the clamping plate (23) can be driven to be close to each other to clamp a concrete block on the conveying belt (17), and in the process, the conveying motor (18) stops rotating under the control of the motor controller;
d, after the concrete block is fixed, the infrared distance meter (9) measures the distance between the press machine (8) and the concrete block and transmits distance information to the central processing unit, the central processing unit controls the electric push rod (12) to extend according to the distance information in cooperation with the timing module and the push rod controller, so that the collecting head (14) is close to the concrete block, then the negative pressure generator (10) is controlled to be started, and residues on the concrete block are absorbed into the collecting box (11) through the hose (13) and the collecting head (14);
the central processing unit controls the press machine (8) to apply pressure to the press rod (26), the pressure on the press rod (26) is transmitted to the concrete block, the compression strength of the concrete block can be tested, the test result can be transmitted to the central processing unit and is recorded into the memory through the recording module, the stress conditions of a plurality of groups of concrete blocks can be analyzed and compared through the comparison module, and the compared data can be displayed through the display (5);
f, after the test is finished, the clamping motor (22) rotates reversely, the clamping plate (23) is separated from the concrete block, then the conveying motor (18) is started, the tested concrete block is conveyed leftwards, the code scanner (15) scans the label attached in the step A, data of different concrete blocks are recorded, and the data can be compared with the data shot by the high-definition camera (6),
wherein experimental detection device of building concrete compressive strength, including workstation (1), conveying mechanism (2), clamping mechanism (3), mounting bracket (4), display (5), high definition digtal camera (6), control box (7), press (8), infrared distancer (9), negative pressure generator (10), collecting box (11), electric putter (12), hose (13), collecting head (14), bar code scanner (15), its characterized in that:
the concrete block conveying device is characterized in that a conveying mechanism (2) used for conveying concrete blocks is installed on the workbench (1), a clamping mechanism (3) used for fixing the concrete blocks is installed in the middle of the workbench (1), and an installation frame (4) located above the conveying mechanism (2) is installed on the workbench (1);
a display (5) is installed on the right side of the mounting frame (4), a high-definition camera (6) located on the left side of the display (5) is installed at the top of the mounting frame (4), a control box (7) located on the left side of the high-definition camera (6) is installed on the mounting frame (4), a press machine (8) is installed in the middle of the mounting frame (4), and an infrared range finder (9) which is right opposite to the clamping mechanism (3) is installed on the press machine (8);
the vacuum cleaner is characterized in that a negative pressure generator (10) is installed at the top of the mounting rack (4), a detachable collecting box (11) connected with the negative pressure generator (10) is installed on the mounting rack (4), an electric push rod (12) is installed on the right side of the bottom of the collecting box (11), a hose (13) driven by the electric push rod (12) is installed at the bottom of the collecting box (11), a collecting head (14) which is right opposite to the clamping mechanism (3) is installed at the bottom of the hose (13), a code scanner (15) is installed on the left side of the mounting rack (4),
the clamping mechanism (3) comprises a fixed plate (19) which is installed on the workbench (1) and located below the conveying belt (17) on the upper side, two parallel movable plates (20) capable of moving back and forth are slidably connected to the inside of the fixed plate (19), the middle of each of the two movable plates (20) is in threaded connection with the same threaded rod (21), threads which are matched with the threaded rods (21) and opposite in direction are respectively arranged on the two movable plates (20), a clamping motor (22) used for driving the threaded rods (21) is installed at the rear of the workbench (1), and clamping plates (23) located on the front side and the rear side of the conveying belt (17) are respectively installed on the two movable plates (20).
2. The operation method of the building concrete compressive strength test detection device according to claim 1, characterized in that: the conveying mechanism (2) comprises two guide wheels (16) arranged on the workbench (1), the two guide wheels (16) are in transmission connection through a conveying belt (17), and a conveying motor (18) fixedly connected with the axis of one guide wheel (16) is arranged on the workbench (1).
3. The operation method of the building concrete compressive strength test detection device according to claim 1, characterized in that: two guide grooves (24) positioned at the left side and the right side are formed in the inner bottom wall of the fixed plate (19), and guide plates (25) fixedly connected with the bottom of the moving plate (20) are connected to the inner portions of the guide grooves (24) in a sliding mode.
4. The operation method of the building concrete compressive strength test detection device according to claim 1, characterized in that: the inside of control box (7) includes central processing unit, memory, types the module, conversion module, timing module, contrast module, machine controller and push rod controller, infrared range finder (9), press (8), bar scanner (15), push rod controller, machine controller and negative pressure generator (10) all are connected with conversion module both way electricity, conversion module's output and central processing unit's input electricity are connected, infrared range finder (9), press (8), high definition digtal camera (6), push rod controller, machine controller, bar scanner (15) and negative pressure generator (10) all are connected with timing module both way electricity, timing module and central processing unit both way electricity are connected, high definition digtal camera's (6) output and central processing unit's input electricity are connected, the input of memory, The input end of the input module and the input end of the comparison module are both electrically connected with the output end of the central processing unit, the output end of the comparison module is electrically connected with the input end of the display (5), and the output end of the input module is electrically connected with the input end of the memory.
5. The operation method of the building concrete compressive strength test detection device according to claim 1, characterized in that: concrete press or universal tester are selected in press (8), press lever (26) is installed to the output of press (8).
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| CN111307588B (en) * | 2020-02-28 | 2020-10-02 | 中铁六局集团有限公司交通工程分公司 | Method for rapidly measuring compression strength ratio of ground limestone powder |
| CN111649930A (en) * | 2020-06-18 | 2020-09-11 | 赵桂荣 | Steel construction building girder stability detection device |
| CN112834262B (en) * | 2021-01-22 | 2023-01-03 | 河南省建筑科学研究院有限公司 | Building concrete check out test set |
| CN116929973B (en) * | 2023-09-18 | 2023-11-21 | 江苏润鼎智能装备科技有限公司 | Aerated concrete body hardness detection device |
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