Steel strength detection device for building construction

Abstract

The utility model provides a steel strength detection device for building construction, which relates to the technical field of steel strength detection and comprises a tensile testing machine body, and a shooting component is arranged on the rear surface of the tensile testing machine body. According to the utility model, the acoustic emission sensor is started to monitor the position of the steel fracture, the information of the fracture position is transmitted to the PLC, the PLC calculates the required moving distance of the industrial high-speed camera, and then the adjusting motor and the laser range finder are started. The adjusting motor drives the lead screw to rotate, drives the moving block to move and drives the industrial high-speed camera and the laser range finder to move together, and meanwhile, the laser range finder detects the moving distance, so that the industrial high-speed camera moves to the fracture position of the quasi steel, and targeted shooting is facilitated. The industrial high-speed camera can completely record the whole process from stretching to final fracture of the steel, and can shoot and record the fracture part.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel strength detection technical field especially relates to a building construction steel strength detection device. BACKGROUND

[0002] Building construction steel refers to various steel used in the construction process, mainly including steel bars, shaped steel, steel plates and steel pipes. The quality of these steels is directly related to the safety and service life of the building. If the steel quality is unqualified, such as insufficient strength, it may cause structural deformation or even damage when the building bears load, so building construction steel detection is very important. Strength is one of the key indicators of steel quality. Through strength detection, steel with insufficient strength can be screened out to prevent it from being used in construction engineering.

[0003] In the prior art, the strength of building construction steel is mainly detected by tensile test, which is the most commonly used method. During the tensile test, the steel is clamped in the clamp of the universal testing machine, and the testing machine slowly applies tension until the sample breaks, so as to obtain the tensile strength of the steel. However, the existing universal testing machine usually relies on the curve and data of the test result for analysis during the detection process, lacks intuitive recording of the steel fracture process, and cannot comprehensively obtain various phenomena and information of the steel at the moment of fracture, which may lead to inaccurate evaluation of the steel performance, especially for some new steels or steels treated by special process, the detailed information in the fracture process is crucial for performance analysis. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problem of lacking intuitive recording of the steel fracture process in the existing building construction steel strength detection process, which cannot obtain intuitive image information, making the analysis result not comprehensive and deep enough, leading to inaccurate strength evaluation result and reducing the efficiency of the test, and provides a building construction steel strength detection device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a building construction steel strength detection device, comprising: a tensile testing machine body, a shooting assembly is arranged on the rear surface of the tensile testing machine body, and an adjusting assembly is arranged on one side of the outer surface of the tensile testing machine body.

[0006] The shooting assembly comprises a supporting frame, an adjusting motor is fixedly installed on the top of the supporting frame, a lead screw is fixedly installed on the output end of the adjusting motor, a moving block is threadedly sleeved on the outer surface of the lead screw, an industrial high-speed camera is installed on the front surface of the moving block through bolts, a fixed block is fixedly installed on the front surface of the moving block close to the bottom, and a laser range finder is installed on the bottom of the fixed block through screws.

[0007] Preferably, two limiting rods are fixedly installed in the interior of the support frame, and one end of each of the two limiting rods is movably penetrated into the bottom of the moving block.

[0008] Preferably, the front surface of the support frame is fixedly installed on the rear surface of the tensile testing machine body, the output end of the adjusting motor is movably penetrated into the interior of the support frame, and the bottom end of the lead screw is movably embedded in the bottom surface in the interior of the support frame.

[0009] Preferably, the adjusting assembly comprises a fixed plate, a PLC controller is fixedly installed on one side of the outer surface of the fixed plate, a mounting plate is arranged on the other side of the outer surface of the fixed plate, and a connecting plate is installed on one side of the outer surface of the mounting plate through bolts.

[0010] Preferably, an acoustic emission sensor is fixedly installed on one side of the outer surface of the connecting plate, two fixed rods are fixedly installed on the other side of the outer surface of the mounting plate, and a fixing groove is formed in the outer surface of each of the two fixed rods.

[0011] Preferably, a clamp is arranged on the outer surface of each of the two fixed rods, two rubber clamping rods are fixedly installed on the inner wall of the clamp, one end of each of the two rubber clamping rods is movably embedded in the interior of the fixing groove, and a plurality of adjusting holes are formed in the outer surface of the fixed plate.

[0012] Preferably, one end of each of the two fixed rods is movably embedded in the interior of two adjusting holes, respectively, a scale bar is fixedly installed on the front surface of the fixed plate, and the fixed plate is installed on one side of the outer surface of the tensile testing machine body through bolts.

[0013] Compared with the prior art, the utility model has the advantages and positive effects that,

[0014] 1、in the utility model, the acoustic emission sensor is started to monitor the position of the steel fracture, the fracture position information is transmitted to the PLC controller, the PLC controller calculates the distance that the industrial high-speed camera needs to move, and then the adjusting motor and the laser range finder are started. The adjusting motor drives the lead screw to rotate, drives the moving block to move, and drives the industrial high-speed camera and the laser range finder to move together, and at the same time, the laser range finder detects the moving distance, so that the industrial high-speed camera moves to the steel fracture position, so as to carry out targeted shooting. The industrial high-speed camera can completely record the whole process of the steel from the beginning of stretching to the final fracture, and can shoot and record the fracture position. The tensile testing machine body cooperates with the shooting assembly, so that the detection result is based on the combination of stress strain curve and other test data, cooperates with the industrial high-speed camera to provide more abundant and more intuitive image experimental data, greatly improves the accuracy and efficiency of the strength detection result analysis, and more deeply understands the mechanical properties and fracture mechanism of the material.

[0015] 2. The utility model discloses a scale bar is judged the approximate middle position of the steel material being clamped. Then pull out the clamp outward, and pull out the mounting plate outward, according to the position in the middle of the steel material, remove the acoustic emission sensor, then insert the fixed rod into the adjusting hole after moving position, and the clamp sleeve is in the fixed rod outer surface, through the rubber card rod is inserted into the fixed groove, the fixed rod is fixed, thereby the acoustic emission sensor is installed in the position with the middle position of the steel material flush, can more effectively capture the acoustic emission signal produced in the tensile process of the steel material, improve the probability of detecting the fracture starting position, more accurately judge the fracture position. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A first angle perspective view of the building construction steel strength detection device is provided for the utility model;

[0017] Figure 2 A second angle perspective view of the building construction steel strength detection device is provided for the utility model;

[0018] Figure 3 A structure expansion perspective view of the shooting assembly in the building construction steel strength detection device is provided for the utility model;

[0019] Figure 4 A partial structure expansion perspective view of the adjusting assembly in the building construction steel strength detection device is provided for the utility model;

[0020] Figure 5 A structure expansion perspective view of the clamp in the building construction steel strength detection device is provided for the utility model.

[0021] Legend:

[0022] 1, tensile testing machine body, 2, shooting assembly, 201, support frame, 202, adjusting motor, 203, screw rod, 204, limit rod, 205, moving block, 206, industrial high-speed camera, 207, fixed block, 208, laser range finder, 3, adjusting assembly, 301, fixed plate, 302, PLC controller, 303, mounting plate, 304, connecting plate, 305, acoustic emission sensor, 306, fixed rod, 307, fixed groove, 308, clamp, 309, rubber card rod, 310, adjusting hole, 311, scale bar. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above -mentioned purpose, feature and advantage of the utility model, the utility model is further explained below with the help of drawings and examples. It needs to be explained that the embodiment of the application and the feature in the embodiment can be combined mutually in the case of no conflict.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] Example 1, as Figures 1-5 As shown, this utility model provides a strength testing device for steel used in building construction, comprising: a tensile testing machine body 1, a camera assembly 2 disposed on the rear surface of the tensile testing machine body 1, and an adjustment assembly 3 disposed on one outer surface of the tensile testing machine body 1; the camera assembly 2 includes a support frame 201, an adjustment motor 202 fixedly mounted on the top of the support frame 201, a lead screw 203 fixedly mounted on the output end of the adjustment motor 202, a moving block 205 threadedly fitted on the outer surface of the lead screw 203, and an industrial high-speed camera 2 bolted to the front surface of the moving block 205. 06. A fixing block 207 is fixedly installed on the front surface of the moving block 205 near the bottom. A laser rangefinder 208 is installed on the bottom of the fixing block 207 by screws. Two limiting rods 204 are fixedly installed inside the support frame 201. One end of each limiting rod 204 extends movably through to the bottom of the moving block 205. The front surface of the support frame 201 is fixedly installed on the rear surface of the tensile testing machine body 1. The output end of the adjusting motor 202 extends movably through to the inside of the support frame 201. The bottom end of the lead screw 203 is movably embedded in the bottom surface inside the support frame 201. The adjusting assembly 3 includes a fixing plate 301. A PLC controller 302 is fixedly installed on one outer surface of the fixing plate 301. A mounting plate 303 is provided on the other outer surface of the fixing plate 301. A connecting plate 304 is installed on one outer surface of the mounting plate 303 by bolts. An acoustic emission sensor 305 is fixedly installed on one outer surface of the connecting plate 304.

[0026] The effect achieved by the whole embodiment 1 is to adjust the electrical connection between the motor 202, the industrial high-speed camera 206, the laser range finder 208, the acoustic emission sensor 305 and the PLC controller 302. The tensile testing machine body 1 is a mature technology, and will not be described in detail here. The steel to be detected is placed in the two clamps inside the tensile testing machine body 1 for fixation. When the tensile testing machine body 1 is started to detect the tensile strength of the steel, the acoustic emission sensor 305 is started. When the steel is subjected to tension, stress concentration will occur inside the steel. If there are tiny defects or local stress exceeds the ultimate strength of the material in the stress concentration area, micro cracks will be generated. With the continuous increase of tension, the micro cracks will continue to expand. In the process of crack expansion, the elastic strain energy inside the steel will be released in the form of elastic waves, which is the acoustic emission phenomenon. The acoustic emission sensor 305 can detect these elastic wave signals, and the acoustic emission sensor 305 can detect these signals and judge the generation, expansion and final fracture position of the crack by analyzing the characteristics of the signals. After the acoustic emission sensor 305 monitors the position of the fracture of the steel, the fracture position information is transmitted to the PLC controller 302. The PLC controller 302 calculates the distance that the industrial high-speed camera 206 needs to move according to the pre-set program and position feedback signal, and then starts the adjusting motor 202 and the laser range finder 208. The output end of the adjusting motor 202 drives the lead screw 203 to rotate, and under the limiting action of the limiting rod 204, the moving block 205 moves and drives the industrial high-speed camera 206 and the laser range finder 208 to move together. At the same time, the laser range finder 208 detects the change of the moving distance of the industrial high-speed camera 206 in real time, and transmits the distance data to the PLC controller 302 through electrical signal. When the industrial high-speed camera 206 moves to the fracture of the steel, the PLC controller 302 controls the adjusting motor 202 to be closed, so that the industrial high-speed camera 206 can be aligned with the fracture of the steel for targeted shooting. The industrial high-speed camera 206 has ultra-high shooting frame rate, usually up to thousands of frames per second or even tens of thousands of frames per second, which can clearly capture the fracture moment of the steel in a very short time and the tiny changes in the stretching process. It has high resolution and can provide clear and delicate image details, accurately recording even the tiny cracks or deformation on the surface of the steel. It also has good low-light performance and high contrast, which can adapt to different lighting conditions. When the steel is subjected to tensile strength test, the industrial high-speed camera 206 can record the whole process of the steel from the beginning of stretching to the final fracture in the tensile testing machine, and can shoot the fracture, which can be observed carefully to judge the fracture type and find the fracture source. This is very important for subsequent test analysis and research, especially in the study of the deformation process, crack generation and expansion law of the steel.The stretching testing machine body 1 cooperates with the shooting assembly 2, so that the detection result is based on the combination of stress strain curve and other test data, cooperates with the industrial high-speed camera 206 to provide more abundant and more intuitive image experimental data, greatly improves the accuracy and efficiency of the strength detection result analysis, deeply understands the mechanical properties and fracture mechanism of the material, solves the problems of lacking intuitive recording of the steel fracture process in the steel strength detection process of building construction, unable to obtain intuitive image information, the analysis result is not comprehensive and deep enough, and the strength evaluation result is not accurate enough, and the test efficiency is reduced.

[0027] Embodiment 2, as shown in Figures 1-2 and Figures 4-5 The adjusting assembly 3 includes a fixed plate 301, one side outer surface of the fixed plate 301 is fixedly installed with a PLC controller 302, the other side outer surface of the fixed plate 301 is provided with a mounting plate 303, one side outer surface of the mounting plate 303 is installed with a connecting plate 304 through bolts, one side outer surface of the connecting plate 304 is fixedly installed with an acoustic emission sensor 305, the other side outer surface of the mounting plate 303 is fixedly installed with two fixed rods 306, the outer surfaces of the two fixed rods 306 are both provided with a fixed groove 307, the outer surfaces of the two fixed rods 306 are provided with a clamp 308, the inner wall of the clamp 308 is fixedly installed with two rubber clamping rods 309, one end of the two rubber clamping rods 309 is respectively movably embedded in the inside of the two fixed grooves 307, the outer surface of the fixed plate 301 is provided with a plurality of adjusting holes 310, the outer surfaces of the two fixed rods 306 are respectively movably embedded in two of the adjusting holes 310, the front surface of the fixed plate 301 is fixedly installed with a scale bar 311, and the fixed plate 301 is installed on one side outer surface of the stretching testing machine body 1 through bolts.

[0028] The effect of the whole embodiment 2 is that after the steel is fixed in the two clamps of the stretching testing machine body 1, the approximate middle position of the clamped steel is judged by the scale bar 311. Then the clamp 308 is pulled out, the two rubber clamping rods 309 are pulled out from the fixed grooves 307, the mounting plate 303 is pulled out, the fixed rod 306 is pulled out from the adjusting hole 310, then the acoustic emission sensor 305 is moved according to the position of the middle of the steel, then the fixed rod 306 is inserted into the adjusting hole 310 after moving, the clamp 308 is clamped on the outer surface of the fixed rod 306, and the rubber clamping rod 309 is inserted into the fixed groove 307, so that the fixed rod 306 is fixed, so that the acoustic emission sensor 305 is installed at the position flush with the middle position of the steel, the acoustic emission signals generated by the steel during the stretching process can be more effectively captured, especially the signals from the central region of the steel, the probability of detecting the fracture initiation position can be improved, and the fracture position can be more accurately judged.

[0029] Working principle: the steel to be detected is placed in the two clamps inside the tensile testing machine body 1 for fixation, and the acoustic emission sensor 305 is started when the tensile testing machine body 1 is started to detect the tensile strength of the steel. When the steel is subjected to tension, stress concentration will occur inside the steel. In the process of crack propagation, the elastic strain energy inside the steel will be released in the form of elastic waves. The acoustic emission sensor 305 can detect these elastic wave signals and judge the fracture position. Then the fracture position information is transmitted to the PLC controller 302. According to the pre-set program and position feedback signal, the PLC controller 302 calculates the distance that the industrial high-speed camera 206 needs to move, and then starts the adjusting motor 202 and the laser range finder 208. The output end of the adjusting motor 202 drives the screw rod 203 to rotate, and under the limiting action of the limiting rod 204, the moving block 205 moves and drives the industrial high-speed camera 206 and the laser range finder 208 to move together. At the same time, the laser range finder 208 detects the change of the moving distance of the industrial high-speed camera 206 in real time, and transmits the distance data to the PLC controller 302 through electrical signal. When the industrial high-speed camera 206 moves to the fracture position of the steel, the PLC controller 302 controls the adjusting motor 202 to be closed, so that the industrial high-speed camera 206 can be aligned with the fracture position of the steel for targeted shooting. The industrial high-speed camera 206 has an ultra-high shooting frame rate, usually up to thousands of frames per second or even tens of thousands of frames per second, which can clearly capture the fracture moment of the steel in a very short time and the tiny changes in the stretching process. When the steel is subjected to tensile strength test, the industrial high-speed camera 206 can record the whole process of the steel from the beginning of stretching to the final fracture in the tensile testing machine, and can shoot and record the fracture position. The fracture surface can be observed carefully to judge the fracture type and find the fracture source. The tensile testing machine body 1 cooperates with the shooting assembly 2 to make the detection results based on the stress-strain curve and other test data, and cooperate with the industrial high-speed camera 206 to provide more abundant and more intuitive image experimental data, which greatly improves the accuracy and efficiency of the strength detection result analysis, and deeply understands the mechanical properties and fracture mechanism of the material. The approximate middle position of the clamped steel is judged by the scale bar 311, then the clamp 308 is pulled out, the two rubber clamping rods 309 are pulled out from the fixed groove 307, then the mounting plate 303 is pulled out, the fixed rod 306 is pulled out from the adjusting hole 310, then the acoustic emission sensor 305 is moved according to the middle position of the steel, then the fixed rod 306 is inserted into the adjusting hole 310 after moving, the clamp 308 is clamped on the outer surface of the fixed rod 306, and the rubber clamping rod 309 is inserted into the fixed groove 307 to fix the fixed rod 306, so that the acoustic emission sensor 305 is installed at the position flush with the middle position of the steel, which can improve the probability of detecting the fracture initiation position and more accurately judge the fracture position.

[0030] The wiring diagram of the tensile testing machine body 1, the adjusting motor 202, the industrial high-speed camera 206, the laser range finder 208, the PLC controller 302 and the acoustic emission sensor 305 belongs to the public knowledge in the field, and the working principle is a known technology, and the model is selected according to actual use, so that the control mode and the wiring arrangement of the tensile testing machine body 1, the adjusting motor 202, the industrial high-speed camera 206, the laser range finder 208, the PLC controller 302 and the acoustic emission sensor 305 are not explained in detail.

[0031] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms, and any skilled person in the art can change or modify the above disclosed technical content into equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model without departing from the technical scheme content of the utility model still belongs to the protection scope of the technical scheme of the utility model.

Claims

1. A strength testing device for steel used in building construction, characterized in that, Include: Tensile testing machine body (1), the rear surface of the tensile testing machine body (1) is provided with a shooting assembly (2), and one side of the outer surface of the tensile testing machine body (1) is provided with an adjusting assembly (3); The shooting assembly (2) comprises a support frame (201), an adjusting motor (202) is fixedly installed at the top of the support frame (201), a lead screw (203) is fixedly installed at the output end of the adjusting motor (202), a moving block (205) is threaded on the outer surface of the lead screw (203), an industrial high-speed camera (206) is installed on the front surface of the moving block (205) through bolts, a fixed block (207) is fixedly installed at the front surface of the moving block (205) close to the bottom, and a laser range finder (208) is installed on the bottom of the fixed block (207) through screws.

2. The device for detecting the strength of a construction steel material according to claim 1, wherein: Two limiting rods (204) are fixedly installed in the support frame (201), and one end of each of the two limiting rods (204) is movably penetrated into the bottom of the moving block (205).

3. The device for testing the strength of a construction steel material according to claim 2, characterized in that: The front surface of the support frame (201) is fixedly installed on the rear surface of the tensile testing machine body (1), the output end of the adjusting motor (202) is movably penetrated into the inside of the support frame (201), and the bottom end of the lead screw (203) is movably embedded in the bottom surface in the inside of the support frame (201).

4. The device for detecting the strength of a construction steel material according to claim 1, wherein: The adjusting assembly (3) comprises a fixed plate (301), a PLC controller (302) is fixedly installed on one side of the outer surface of the fixed plate (301), an installation plate (303) is arranged on the other side of the outer surface of the fixed plate (301), and a connecting plate (304) is installed on one side of the outer surface of the installation plate (303) through bolts.

5. The device for testing the strength of a construction steel material according to claim 4, characterized in that: A sound emission sensor (305) is fixedly installed on one side of the outer surface of the connecting plate (304), two fixed rods (306) are fixedly installed on the other side of the outer surface of the installation plate (303), and a fixed groove (307) is formed in the outer surface of each of the two fixed rods (306).

6. The device for testing the strength of a construction steel material according to claim 5, characterized in that: A clamp (308) is arranged on the outer surface of each of the two fixed rods (306), two rubber clamping rods (309) are fixedly installed on the inner wall of the clamp (308), one end of each of the two rubber clamping rods (309) is movably embedded in the inside of the two fixed grooves (307), and a plurality of adjusting holes (310) are formed in the outer surface of the fixed plate (301).

7. The device for testing the strength of a construction steel material according to claim 6, characterized in that: The outer surface of each of the two fixed rods (306) is movably embedded in the inside of two adjusting holes (310), a scale bar (311) is fixedly installed on the front surface of the fixed plate (301), and the fixed plate (301) is installed on one side of the outer surface of the tensile testing machine body (1) through bolts.

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