Reinforced concrete two-way slab strength detection equipment and detection method

Abstract

The present invention belongs to the technical field of reinforced concrete testing, specifically a strength detection device and method for a reinforced concrete two-way slab, including a carrier assembly. A testing assembly is provided on the carrier assembly. A moving assembly is provided inside the carrier assembly. A clamping assembly is provided on the moving assembly. A two-way slab is provided inside the clamping assembly. The carrier assembly includes a box body. A central control module is provided on one side of the box body. A frame is fixedly connected to the upper end surface of the box body. The testing assembly includes a sliding frame. The bottom of the sliding frame is slidably connected to the frame. A sliding screw is rotatably connected inside the sliding frame. One end of the sliding screw is connected to a sliding motor. A sliding block is threadedly connected to the sliding screw. This reinforced concrete two-way slab detection device has a wide detection range, diverse detection methods, high detection accuracy, good vibration damping effect, is stable and reliable, and has a low operation difficulty, and is suitable for batch detection of the strength of two-way slabs.

Description

Technical Field

[0001] The present invention belongs to the technical field of reinforced concrete testing, specifically a strength detection device and method for reinforced concrete two-way slabs. Background Art

[0002] A reinforced concrete two-way slab is an important component widely used in building structures, which has sufficient flexural capacity in two directions to bear loads. During use, the two-way slab bears various loads, such as live loads like people, furniture, equipment, etc. and dead loads like the self-weight of the structure. If the strength of the two-way slab is insufficient, under the action of loads, it may exhibit failure phenomena such as cracks, excessive deformation, or even fracture, resulting in the overall instability of the structure and triggering serious safety accidents. Through strength detection, it is possible to timely discover whether the strength of the two-way slab meets the design requirements, ensure its safety during use, and safeguard the safety of people and property.

[0003] Chinese Patent with application number 202310929746.X discloses a testing device for detecting the bearing capacity of reinforced concrete. The testing device for detecting the bearing capacity of reinforced concrete is provided with a pressing plate such that the spring reset drives the pressing plate to fix the reinforced concrete; the fixing effect of this testing device is poor, affecting the accuracy of the detection results.

[0004] When actually detecting the strength of a two-way slab, the prior art cannot effectively detect different positions and different stress conditions of the two-way slab, thus affecting the accuracy of the detection results. The detection mode is single and the practicability is poor.

[0005] In addition, two-way slabs usually have relatively large planar dimensions. Existing detection devices cannot fully adapt to their size changes, and are prone to shaking and displacement deviation during the clamping process, thereby reducing the stability of the detection process and affecting the detection results.

[0006] During the detection process of a two-way slab, the vibration generated by the detection device will interfere with the pressure sensor, resulting in the measured data being prone to fluctuations and errors. At the same time, the vibration will cause obvious shaking of the detection device, affecting the overall stability of the device and further affecting the accuracy of the detection results. Summary of the Invention

[0007] In view of the above problems, the present invention provides a strength detection device and method for reinforced concrete two-way slabs to solve the problems raised in the above background art.

[0008] To achieve the above object, the present invention provides the following technical solution: A strength detection device for reinforced concrete two-way slabs, including a carrier assembly, a testing assembly is provided on the carrier assembly, a moving assembly is provided inside the carrier assembly, a clamping assembly is provided on the moving assembly, and a two-way slab is provided inside the clamping assembly;

[0009] The carrier assembly includes a box body, a central control module is provided on one side of the box body, and a frame is fixedly connected to the upper end surface of the box body;

[0010] The test assembly includes a sliding frame, the bottom of the sliding frame is slidably connected to the frame, a sliding screw is rotatably connected inside the sliding frame, one end of the sliding screw is connected to a sliding motor, a sliding block is threadedly connected to the sliding screw, a force-applying cylinder is fixedly connected to the bottom of the sliding block, a force-applying member is fixedly connected to the output end of the force-applying cylinder, and a pressure sensor is provided on the force-applying member;

[0011] Preferably, the moving assembly includes two fixed blocks, the bottoms of the two fixed blocks are fixedly connected to the box body, two moving blocks are provided between the opposite end faces of the two fixed blocks, a threaded hole is opened inside the moving block, a bidirectional screw is threadedly connected inside the threaded hole, the bidirectional screw is rotatably connected inside the fixed block, and one end of the bidirectional screw is connected to a moving motor.

[0012] Preferably, the test assembly further includes two limit blocks, the two limit blocks are respectively provided on both sides of the frame, and the bottom of the limit block is fixedly connected to the frame. A sliding hole is opened on one side of the sliding frame, a displacement screw is threadedly connected inside the sliding hole, the displacement screw is rotatably connected inside the two limit blocks, and one end of the displacement screw is connected to a displacement motor.

[0013] Preferably, there are two sets of the moving assemblies, the two sets of moving assemblies are arranged crosswise and vertically, and there is a gap between the bidirectional screws of the two sets of moving assemblies.

[0014] Preferably, the clamping assembly includes four sets of telescopic cylinders, the bottoms of the four sets of telescopic cylinders are respectively fixedly connected to the four corners of the upper end surface of the moving block, the output end of the telescopic cylinder is connected to a rotating block, the side wall of the rotating block is rotatably connected to a connecting block through a bearing, the top of the connecting block is fixedly connected to a support plate, a regulating rod is provided in the middle of the upper end surface of the support plate, an activity groove is opened inside the regulating rod, a displacement rod is hermetically slidably connected inside the activity groove, and a pressing plate is fixedly connected to the displacement rod.

[0015] Preferably, a plurality of electromagnetic plates are linearly and evenly arranged at the inner bottom of the activity groove, the bottoms of the plurality of electromagnetic plates are fixedly connected to the support plate, a return spring is provided on the top of the plurality of electromagnetic plates, a magnetic plate is provided on the top of the return spring, the magnetic plate is slidably connected to the inner wall of the activity groove, the top of the magnetic plate is fixedly connected to the displacement rod, and the opposite end faces of the electromagnetic plate and the magnetic plate are magnetically different.

[0016] Preferably, an elastic frame is communicated with the inner bottom of the adjusting rod near the side of the force applying member. A plurality of ventilation holes are uniformly formed in the top of the elastic frame. The other side of the inner bottom of the adjusting rod is communicated with a ventilation pipe. The other side of the ventilation pipe is connected with an air pump, and the other side of the air pump is connected with a communicating pipe.

[0017] Preferably, a two-way plate is arranged between the opposite end faces of the elastic frames and the pressing plates of the multiple groups of clamping assemblies.

[0018] The present invention also provides a method for detecting the strength of a reinforced concrete two-way slab. The detection method includes the following steps:

[0019] Step 1: Control the movement of the moving assembly according to the size of the two-way slab and the number of force-bearing supports to prompt the elastic frame to support the two-way slab. Then, control the electromagnetic plate to be powered on and the current to gradually increase until it closely adheres to the upper end face of the two-way slab, completing the clamping and fixing of the two-way slab. Control the air pump to start the air extraction operation. At this time, the air inside the movable groove and the elastic frame is continuously discharged to the external environment, thereby increasing the negative pressure adsorption force of the elastic frame on the two-way slab.

[0020] Step 2: Control the force applying member to move to the detection point and apply a force to squeeze the two-way slab at a set rate. During the loading process, the central control module reads the indication detected by the pressure sensor in real time.

[0021] Step 3: Use the expansion and contraction of the return spring to monitor the vibration condition during the detection process of the two-way slab. When the return spring detects that the vibration intensity of the equipment is small, the air pump injects high-pressure gas into the movable groove and the elastic frame, and increases the current of the electromagnetic plate to compress the gas volume inside the movable groove, so that the air pressure inside the movable groove and the elastic frame gradually rises to 50% of the rated maximum air pressure. When the return spring detects that the vibration intensity of the equipment is large, continue to inject high-pressure gas into the movable groove and the elastic frame through the air pump, and increase the current of the electromagnetic plate to compress the gas volume inside the movable groove. At this time, the air pressure inside the movable groove and the elastic frame rises to the rated maximum air pressure.

[0022] Step 4: After completing the detection work at this detection point, then the force applying cylinder controls the force applying member to move upward away from the two-way slab, and the sliding motor and the displacement motor are successively started to prompt the force applying member to move to the next detection point.

[0023] Compared with the prior art, the present application has the following advantages:

[0024] 1. Through the mutual cooperation of components such as the carrier assembly, the test assembly, the moving assembly, and the clamping assembly, the detection equipment of the present application has a wide detection range, diverse detection methods, high detection accuracy, good vibration reduction effect, stable and reliable performance, and low operation difficulty, and is suitable for batch detection of the strength of two-way slabs.

[0025] 2. By setting up the cooperation of components such as telescopic cylinders, electromagnetic plates, elastic frames, and air pumps, the present application controls the electromagnetic plate to be energized and the current to gradually increase, controls the air pump to start pumping air to form a negative pressure, so that the pressing plate and the elastic frame clamp and fix the double-sided plate. At the same time, by controlling the telescopic cylinder to shorten, the number of support points of the double-sided plate is adjusted, so as to meet the strength detection methods under different stress conditions of the double-sided plate, and effectively improve the diversity of double-sided plate detection.

[0026] 3. By using the expansion and contraction of the return spring to monitor the vibration situation during the detection process of the double-sided plate, through the cooperation of components such as the return spring, air pump, electromagnetic plate, and elastic frame, the air pump injects high-pressure gas with different pressures into the movable groove and the elastic frame, and the electromagnetic plate compresses the internal volume of the movable groove, so that the clamping component has the functions of soft vibration damping and hard vibration damping, and realizes the self-adaptive adjustment function of vibration reduction under different vibration conditions during the detection process of the double-sided plate by the clamping component.

[0027] 4. By setting up the cooperation of components such as the moving block and the elastic frame, controlling the displacement of the moving block to make the elastic frame support the double-sided plate, the detection requirements of double-sided plates with different sizes can be met, and the detection range is improved; by setting up the cooperation of components such as the sliding motor 1, sliding motor 2, applying force cylinder, and applying force member, controlling the applying force member to move to the detection point and applying force to squeeze the double-sided plate at a set rate, multi-point detection of the double-sided plate is completed, and the diversity and detection efficiency of double-sided plate detection are effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the first perspective of the overall structure of the present invention;

[0029] Figure 2 is a schematic diagram of the second perspective of the overall structure of the present invention;

[0030] Figure 3 is a schematic diagram of the structure of the carrier assembly of the present invention;

[0031] Figure 4 is a schematic diagram of the structure of the test assembly of the present invention;

[0032] Figure 5 is a schematic diagram of the structure of the clamping assembly of the present invention;

[0033] Figure 6 is Figure 5 the enlarged schematic diagram at A in

[0034] Figure 7 is Figure 5 the front view internal three-dimensional structure schematic diagram of

[0035] Figure 8 is the exploded structure schematic diagram of the clamping assembly of the present invention;

[0036] Figure 9 Schematic structural diagram of the mobile component of the present invention;

[0037] Figure 10 Schematic structural diagram of the four-side supported loading structure of the two-way slab of the present invention.

[0038] In the figure: 1. Carrier component; 101. Box body; 102. Central control module; 103. Frame; 2. Test component; 201. Sliding frame; 202. Sliding screw; 203. Sliding motor; 204. Sliding block; 205. Applying force cylinder; 206. Applying force member; 207. Limiting block; 208. Sliding hole; 209. Displacement screw; 210. Displacement motor; 3. Mobile component; 301. Fixed block; 302. Moving block; 303. Threaded hole; 304. Bidirectional screw; 305. Moving motor; 4. Clamping component; 401. Telescopic cylinder; 402. Support plate; 403. Adjusting rod; 404. Activity groove; 405. Displacement rod; 406. Electromagnetic plate; 407. Return spring; 408. Magnetic plate; 409. Elastic frame; 410. Ventilation hole; 411. Ventilation pipe; 412. Air pump; 413. Connecting pipe; 414. Pressing plate; 415. Rotating block; 416. Connecting block; 5. Two-way slab. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] In order to solve the problems that in the actual strength detection of the two-way slab 5, the prior art cannot effectively detect different positions and different stress conditions of the two-way slab 5, thus affecting the accuracy of the detection results, the detection mode is single, the practicability is poor, the two-way slab 5 usually has a large plane size, the existing detection devices cannot fully adapt to its size change, and when there are situations of local insecure fixation or uneven stress during the clamping process, it is easy to have phase shaking and moving deviation, thereby reducing the stability of the detection process and affecting the detection results, Embodiment 1 is proposed.

[0041] Embodiment 1:

[0042] As Figure 1-10As shown in the figure, the strength detection equipment for two-way reinforced concrete slabs includes a carrier assembly 1. The length, width, and height directions of the carrier assembly 1 are respectively defined as the X-axis, Y-axis, and Z-axis of the detection equipment. The carrier assembly 1 is used to provide stable physical support for the detection equipment. A test assembly 2 is provided on the carrier assembly 1. After the two-way slab 5 is installed, the test assembly 2 performs subsequent precise detection. A moving assembly 3 is provided inside the carrier assembly 1. The moving assembly 3 mainly adjusts the position of the moving block 302 to adapt to two-way slabs 5 of different sizes. A clamping assembly 4 is provided on the moving assembly 3. The two-way slab 5 is provided inside the clamping assembly 4. The clamping and fixing function of the clamping assembly 4 is used to keep the two-way slab 5 stable and prevent it from shaking and moving out of position during the detection process.

[0043] The carrier assembly 1 includes a box body 101. The box body 101 can wrap and protect the internal electrical components and serve as a working platform for other components to form a complete detection system. A central control module 102 is provided on one side of the box body 101. The central control module 102 is electrically connected to each electrical component and can detect and control the states of each electrical component. A frame 103 is fixedly connected to the upper end surface of the box body 101. The frame 103 is used to support the test assembly 2 for detecting the strength of the two-way slab 5.

[0044] The test assembly 2 includes a sliding frame 201. The bottom of the sliding frame 201 is slidably connected to the frame 103. The sliding frame 201 can move left and right along the X-axis direction of the frame 103. A sliding screw 202 is rotatably connected inside the sliding frame 201. One end of the sliding screw 202 is connected to a sliding motor 203. A sliding block 204 is threadedly connected to the sliding screw 202. When the sliding motor 203 is started, it drives the sliding screw 202 to rotate through the output end, and then drives the sliding block 204 to slide along the length direction of the sliding screw 202. A force-applying cylinder 205 is fixedly connected to the bottom of the sliding block 204. The output end of the force-applying cylinder 205 is fixedly connected to a force-applying member 206. The force-applying cylinder 205 controls the up and down movement of the force-applying member 206 until it touches the detection point on the upper end surface of the two-way slab 5, and then subsequent detection is carried out. A pressure sensor is provided on the force-applying member 206. The pressure sensor is used to detect the force-bearing condition of the two-way slab 5, thereby detecting its strength.

[0045] The test component 2 further includes two limit blocks 207 which are respectively arranged on both sides of the frame 103, and the bottom of the limit blocks 207 is fixedly connected to the frame 103. A sliding hole 208 is formed on one side of the sliding frame 201, and a displacement screw 209 is threadedly connected inside the sliding hole 208. The displacement screw 209 is rotatably connected inside the two limit blocks 207. One end of the displacement screw 209 is connected to a displacement motor 210. The output end of the displacement motor 210 drives the displacement screw 209 to rotate. The displacement screw 209 drives the sliding frame 201 to slide along the length direction of the displacement screw 209 through the action of the thread. In the above process, the sliding motor 203 and the displacement motor 210 cooperate with each other to enable the sliding block 204 to freely move in the XY plane. At the same time, the force application cylinder 205 controls the force application member 206 to move up and down in the Z axis, so as to realize the multi-point detection of the double-sided plate 5.

[0046] The moving component 3 includes two fixing blocks 301 for supporting the moving component 3. The bottoms of the two fixing blocks 301 are fixedly connected to the box body 101. Two moving blocks 302 are respectively arranged between the opposite end faces of the two fixing blocks 301. The moving blocks 302 are used as bases to fix the position of the clamping component 4. A threaded hole 303 is formed inside the moving block 302, and a bidirectional screw 304 is threadedly connected inside the threaded hole 303. The bidirectional screw 304 is formed by welding two threaded rods with opposite threads. The bidirectional screw 304 is rotatably connected inside the fixing block 301. One end of the bidirectional screw 304 is connected to a moving motor 305. The output end of the moving motor 305 drives the bidirectional screw 304 to rotate. The rotation of the bidirectional screw 304 drives the two moving blocks 302 to approach or move away from each other to adapt to the size of the double-sided plate 5.

[0047] There are two sets of moving components 3, and the two sets of moving components 3 are arranged vertically and crosswise. The two sets of moving components 3 altogether include four sets of clamping components 4. According to the support quantity and the force-bearing situation of the double-sided plate 5, the four sets of clamping components 4 can cooperate with each other to detect the double-sided plate 5. There is a gap between the bidirectional screws 304 of the two sets of moving components 3, and the bidirectional screws 304 are arranged vertically and staggeredly, which avoids interference and collision during the movement process and ensures that the two sets of moving components 3 work without affecting each other.

[0048] During use, due to the inconsistent sizes of the double-sided plates 5, one set of moving components 3 drives the bidirectional screw 304 to rotate through the output end of the moving motor 305. The rotation of the bidirectional screw 304 drives the two moving blocks 302 to approach or move away from each other, thereby changing the distance between the moving blocks 302. The two sets of moving components 3 are arranged vertically and crosswise, so as to control the four moving blocks 302 to work together to fix the double-sided plates 5 with different sizes.

[0049] The clamping assembly 4 includes four sets of telescopic cylinders 401. The bottoms of the four sets of telescopic cylinders 401 are respectively fixedly connected to the four corners of the upper end surface of the moving block 302. When the moving block 302 moves, it can synchronously drive the clamping assembly 4 to move. The output end of the telescopic cylinder 401 is connected to the rotating block 415. The side wall of the rotating block 415 is rotatably connected to the connecting block 416 through a bearing. The top of the connecting block 416 is fixedly connected to the support plate 402. By controlling the output end of the telescopic cylinder 401 to extend or shorten by the same amount of telescopic displacement, the two-way plate 5 can be kept horizontally placed, ensuring that the pressure received by the two-way plate 5 during the loading process is perpendicular to the two-way plate 5. In the middle of the upper end surface of the support plate 402, there is an adjusting rod 403. An activity slot 404 is opened inside the adjusting rod 403. A displacement rod 405 is hermetically and slidably connected inside the activity slot 404. A pressing plate 414 is fixedly connected to the displacement rod 405. Among them, the displacement rod 405 can move up and down inside the activity slot 404, thereby correspondingly adjusting the distance between the pressing plate 414 and the support plate 402 to complete the clamping and fixing of the two-way plate 5.

[0050] At the inner bottom of the activity slot 404, there are multiple electromagnetic plates 406. The bottoms of the multiple electromagnetic plates 406 are fixedly connected to the support plate 402. At the top of the multiple electromagnetic plates 406, there is a return spring 407. At the top of the return spring 407, there is a magnetic plate 408. The setting of the return spring 407 can improve the reset effect of the magnetic plate 408. The magnetic plate 408 is slidably connected to the inner wall of the activity slot 404. The top of the magnetic plate 408 is fixedly connected to the displacement rod 405. The opposite end faces of the electromagnetic plate 406 and the magnetic plate 408 have different magnetic polarities. When the electromagnetic plate 406 is energized and the current increases, the magnetic attraction force between the electromagnetic plate 406 and the magnetic plate 408 increases, and the magnetic plate 408 compresses the return spring 407 and moves downward. The magnetic plate 408 correspondingly drives the displacement rod 405 to move downward, and the displacement rod 405 drives the pressing plate 414 to approach the support plate 402.

[0051] On one side of the inner bottom of the adjusting rod 403 close to the force application member 206, there is a communicating elastic frame 409. A plurality of ventilation holes 410 are evenly opened at the top of the elastic frame 409. On the other side of the inner bottom of the adjusting rod 403, there is a ventilation pipe 411. The other side of the ventilation pipe 411 is connected to an air pump 412. The air pump 412 is used to control the air pressure inside the activity slot 404 and the elastic frame 409. The other side of the air pump 412 is connected to a communicating pipe 413. The air pump 412 is connected to the external environment through the communicating pipe 413.

[0052] A two-way plate 5 is arranged between the opposite end faces of the elastic frames 409 and the pressing plates 414 of multiple groups of clamping assemblies 4. By using the frictional force and extrusion force of the elastic frames 409 and the pressing plates 414 on the two-way plate 5, the two-way plate 5 can be fixed.

[0053] During operation, first, according to the size of the two-way plate 5 and the number of force-bearing supports, the two moving blocks 302 are controlled to approach or move away from each other, driving the clamping assembly 4 to adapt to the size of the two-way plate 5 and the number of force-bearing supports. Specifically, as Figure 10 shown, when the support of the two-way plate 5 is four-sided support, the central control module 102 controls the operation of two groups of moving motors 305. The output ends of the two groups of moving motors 305 drive the rotation of the bidirectional screw 304. The rotation of the bidirectional screw 304 in each group drives the two moving blocks 302 to approach or move away from each other, thereby driving the clamping assembly 4 to adapt to the size of the two-way plate 5. The two-way plate 5 is placed on the upper end surface of the elastic frame 409 to support the two-way plate 5. At this time, the ventilation holes 410 have been completely covered by the two-way plate 5. During this process, the moving block 302 and the elastic frame 409 cooperate with each other to control the movement of the moving block 302 to prompt the elastic frame 409 to support the two-way plate 5, which can meet the detection requirements of two-way plates 5 of different sizes, improving the detection range and detection efficiency.

[0054] Then, control the electromagnetic plate 406 to be energized and the current gradually increases. The magnetic attraction force between the electromagnetic plate 406 and the magnetic plate 408 increases. The magnetic plate 408 compresses the return spring 407 and moves downward. The magnetic plate 408 correspondingly drives the displacement rod 405 to move downward. The displacement rod 405 further drives the pressing plate 414 to approach the support plate 402 until it closely adheres to the upper end surface of the two-way plate 5, completing the clamping and fixing of the two-way plate 5. During this process, the downward movement of the displacement rod 405 will compress the air inside the movable groove 404. At the same time, control the air pump 412 to start pumping air. At this time, the air inside the movable groove 404 and the elastic frame 409 is continuously discharged to the external environment through the ventilation pipe 411, the air pump 412, and the connecting pipe 413 in sequence. As a result, the negative pressure adsorption force of the elastic frame 409 on the two-way plate 5 increases, further enhancing the clamping and fixing effect on the two-way plate 5.

[0055] Finally, start the sliding motor 203 to drive the rotation of the sliding screw 202 through the output end, and then drive the sliding block 204 to slide along the length direction of the sliding screw 202. Start the output end of the displacement motor 210 to drive the rotation of the displacement screw 209. The displacement screw 209 drives the sliding frame 201 to slide along the reverse length of the displacement screw 209 through the action of the thread. Through the mutual cooperation of the sliding motor 203 and the displacement motor 210, the sliding block 204 can move freely in the XY plane. At the same time, the force application cylinder 205 controls the force application member 206 to move up and down along the Z axis until the force application member 206 touches the detection point on the upper end surface of the bidirectional plate 5. Use a pressure sensor to detect the force condition of the bidirectional plate 5. Specifically: control the force application member 206 to apply force and squeeze the bidirectional plate 5 at a set rate, and continue to load until the maximum load capacity of the bidirectional plate 5. At this time, the bidirectional plate 5 reaches the ultimate load state. During the loading process, the central control module 102 can read the reading detected by the pressure sensor in real time and generate a strength curve. When the strength curve drops steeply, stop loading, and then complete the detection work of this detection point. Subsequently, the force application cylinder 205 controls the force application member 206 to move upward away from the bidirectional plate 5. The sliding motor 203 and the displacement motor 210 are started successively to prompt the force application member 206 to move to the next detection point, and cycle the above detection process to realize the multi-point detection of the bidirectional plate 5.

[0056] When the support mode of the bidirectional plate 5 is three-sided support, adjust the height of one of the clamping components 4 so that this clamping component 4 no longer clamps and fixes the bidirectional plate 5. At this time, the force on the bidirectional plate 5 is three-sided support. Specifically: by controlling the output end of the telescopic cylinder 401 to shorten a certain distance, and then drive the pressing plate 414 to move below the bidirectional plate 5. The telescopic cylinder 401 continues to shorten to prompt the pressing plate 414 to gradually move away from the lower end surface of the bidirectional plate 5. At this time, the distance between the pressing plate 414 and the bidirectional plate 5 is large and will not affect the normal operation of the test component 2; when the support mode of the bidirectional plate 5 is two-sided support, it is necessary to adjust the heights of two of the clamping components 4 so that these two clamping components 4 no longer clamp and fix the bidirectional plate 5. At this time, the force on the bidirectional plate 5 is two-sided support. In the above process, by adjusting the number of support points of the bidirectional plate 5, the strength detection method under different force conditions of the bidirectional plate 5 can be satisfied, effectively improving the diversity and detection efficiency of the detection of the bidirectional plate 5.

[0057] Embodiment 2:

[0058] During the above detection process, the vibration generated by the detection device will interfere with the pressure sensor, resulting in fluctuations and errors in the measured data. At the same time, the vibration will cause obvious shaking of the detection device, affecting the overall stability of the device and further affecting the accuracy of the detection result. To solve this problem, the expansion and contraction of the reset spring 407 are used to monitor the vibration situation during the detection process, and the mutual cooperation of components such as the air pump 412, the electromagnetic plate 406, and the elastic frame 409 is used to achieve the vibration mitigation and adaptive adjustment function under different vibration conditions during the detection of the two-way plate 5 by the clamping assembly 4, ensuring the stability of the detection result of the detection device. Specifically:

[0059] First, place the two-way plate 5 on the upper end face of the elastic frame 409 to support the two-way plate 5. At this time, the ventilation holes 410 are completely covered by the two-way plate 5. Control the electromagnetic plate 406 to be energized and the current gradually increases until the pressing plate 414 is tightly attached to the upper end face of the two-way plate 5. At the same time, start the air pump 412 to discharge the air inside the movable groove 404 and the elastic frame 409 to the external environment, completing the clamping and fixing of the two-way plate 5. At this time, the vibration of the device is mainly transmitted to the elastic frame 409 and the pressing plate 414 through the two-way plate 5, and further transmitted to other components of the clamping assembly 4 and other components.

[0060] Then, control the force application member 206 to contact the detection point on the upper end face of the two-way plate 5 to start the detection. The force application member 206 will cause vibration of the detection device during the loading process. As the load applied by the force application member 206 gradually increases, the vibration of the detection device also increases. This vibration is transmitted through the two-way plate 5, the pressing plate 414, the displacement rod 405, and the magnetic plate 408 to generate a periodic external force acting on the reset spring 407, resulting in periodic deformation of the reset spring 407. Therefore, the vibration intensity of the device can be monitored through the deformation degree and deformation frequency of the reset spring 407. It should be noted that the deformations of all the reset springs 407 within the same clamping assembly 4 are consistent, and only the deformation of one of the reset springs 407 needs to be monitored to monitor the vibration intensity of the device.

[0061] Next, the air pressure inside the movable slot 404 and the elastic frame 409 is increased by the air pump 412 to adjust the softness and hardness of the vibration damping of the clamping assembly 4, so that the clamping assembly 4 adaptively reduces vibrations of different intensities. When the bidirectional plate 5 reaches the ultimate load, the air pressure inside the movable slot 404 and the elastic frame 409 that resists vibrations under this load is set as the rated maximum air pressure. In the early and middle stages of the load applied by the force-applying member 206, the load applied by the force-applying member 206 is small. The return spring 407 detects that the vibration intensity of the equipment is small, and the air pump 412 is started to introduce high-pressure gas into the movable slot 404 and the elastic frame 409 along the ventilation pipe 411. At this time, the air pressure inside the movable slot 404 and the elastic frame 409 gradually rises to 50% of the rated maximum air pressure, so that the clamping assembly 4 has a soft vibration damping function. Since the internal volume of the movable slot 404 will increase due to the action of the high-pressure gas, and the vibration of the equipment will also cause the clamping of the pressing plate 414 to become loose, resulting in a decrease in the squeezing force of the pressing plate 414 on the bidirectional plate 5. Therefore, the current of the electromagnetic plate 406 is controlled to increase, and the magnetic attraction force of the magnetic plate 408 on the electromagnetic plate 406 is further increased. On the one hand, it promotes the increase in the squeezing force of the pressing plate 414 on the bidirectional plate 5 to prevent the bidirectional plate 5 from moving and deviating during the detection process. On the other hand, it promotes the adjusting rod 403 to compress the movable slot 404, reduces the internal gas volume of the movable slot 404, and increases the air pressure inside the movable slot 404 and the elastic frame 409. During the above process, when the return spring 407 detects that the vibration intensity of the equipment is small, the vibration will be transmitted to the high-pressure air inside the movable slot 404 and the elastic frame 409 through the bidirectional plate 5, the elastic frame 409, the pressing plate 414, and the displacement rod 405. The internal high-pressure air is compressed, thereby generating an elastic force in the opposite direction to the external acting force. This elastic force will resist the external vibration and effectively absorb the small vibrations in the early and middle stages of the load on the bidirectional plate 5, preventing these small vibrations from interfering with the detection results.

[0062] Finally, in the late middle stage of the load applied by the force-applying member 206, the load applied by the force-applying member 206 is large. The return spring 407 detects that the vibration intensity of the equipment is large. At this time, the clamping assembly 4 not only has to play a role in vibration damping but also has sufficient load-bearing capacity to prevent the bidirectional plate 5 from affecting the detection results due to excessive sinking or instability. The air pump 412 continues to introduce high-pressure gas into the movable slot 404 and the elastic frame 409. At this time, the air pressure inside the movable slot 404 and the elastic frame 409 gradually rises to the rated maximum air pressure, so that the clamping assembly 4 has a hard vibration damping function. At the same time, the current of the electromagnetic plate 406 is further increased, which not only ensures the squeezing and fixing effect of the pressing plate 414 on the bidirectional plate 5 but also compresses the internal gas volume of the movable slot 404 and increases the air pressure inside the movable slot 404 and the elastic frame 409. At this time, the stiffness of the gas inside the movable slot 404 and the elastic frame 409 is large, which can provide more stable support. When the gas bears a large vibration, its deformation amount is relatively small, reducing the generation of vibration.

[0063] The expansion and contraction of the reset spring 407 are used to monitor the vibration condition during the detection process of the two-way plate 5. When the reset spring 407 detects that the vibration intensity of the device is small, components such as the air pump 412, the electromagnetic plate 406, and the elastic frame 409 cooperate with each other. The air pump 412 injects high-pressure gas into the movable groove 404 and the elastic frame 409, and increases the current of the electromagnetic plate 406 to compress the gas volume inside the movable groove 404, so that the air pressure inside the movable groove 404 and the elastic frame 409 gradually rises to 50% of the rated maximum air pressure, prompting the clamping assembly 4 to have a soft vibration damping function and being able to effectively absorb the tiny vibrations generated by the device; when the reset spring 407 detects that the vibration intensity of the device is large, components such as the air pump 412, the electromagnetic plate 406, and the elastic frame 409 cooperate with each other. The air pump 412 continues to inject high-pressure gas into the movable groove 404 and the elastic frame 409, and increases the current of the electromagnetic plate 406 to compress the gas volume inside the movable groove 404. The air pressure inside the movable groove 404 and the elastic frame 409 rises to the rated maximum air pressure, prompting the clamping assembly 4 to have a hard vibration damping function, having sufficient load-bearing capacity, being able to provide more stable support, and reducing the generation of vibrations.

[0064] Embodiment Three:

[0065] The present invention also provides a method for detecting the strength of a reinforced concrete two-way plate, and the specific steps are as follows:

[0066] Step 1: Control the movement of the moving assembly 3 according to the size and the number of force-bearing supports of the two-way plate 5 to prompt the elastic frame 409 to support the two-way plate 5. Then control the electromagnetic plate 406 to be energized and the current gradually increases until it tightly adheres to the upper end surface of the two-way plate 5, completing the clamping and fixing of the two-way plate 5. Control the air pump 412 to start the air extraction work. At this time, the air inside the movable groove 404 and the elastic frame 409 is continuously discharged to the external environment, thereby increasing the negative pressure adsorption force of the elastic frame 409 on the two-way plate 5;

[0067] Step 2: Control the force-applying member 206 to move to the detection point and apply a force to squeeze the two-way plate 5 at a set rate. During the loading process, the central control module 102 reads the indication value detected by the pressure sensor in real time;

[0068] Step 3: Use the expansion and contraction of the reset spring 407 to monitor the vibration condition during the detection process of the double-sided plate 5. When the reset spring 407 detects that the vibration intensity of the device is relatively small, the air pump 412 injects high-pressure gas into the movable slot 404 and the elastic frame 409, and increases the current of the electromagnetic plate 406 to compress the gas volume inside the movable slot 404, so that the air pressure inside the movable slot 404 and the elastic frame 409 gradually rises to 50% of the rated maximum air pressure. When the reset spring 407 detects that the vibration intensity of the device is relatively large, the air pump 412 continues to inject high-pressure gas into the movable slot 404 and the elastic frame 409, and increases the current of the electromagnetic plate 406 to compress the gas volume inside the movable slot 404. At this time, the air pressure inside the movable slot 404 and the elastic frame 409 rises to the rated maximum air pressure;

[0069] Step 4: After completing the detection work at this detection point, then the cylinder 205 applies force to control the force-applying member 206 to move upward away from the double-sided plate 5, and the sliding motor 203 and the displacement motor 210 are successively started to prompt the force-applying member 206 to move to the next detection point.

[0070] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0071] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A strength detection device for a reinforced concrete two-way slab, comprising a carrier assembly (1), characterized in that: A test component (2) is provided on the carrier component (1). A moving component (3) is provided inside the carrier component (1). A clamping component (4) is provided on the moving component (3). A two-way plate (5) is provided inside the clamping component (4). The carrier component (1) includes a box body (101). A central control module (102) is provided on one side of the box body (101). A frame (103) is fixedly connected to the upper end face of the box body (101). The test component (2) includes a sliding frame (201). The bottom of the sliding frame (201) is slidably connected to the frame (103). A sliding screw rod (202) is rotatably connected inside the sliding frame (201). One end of the sliding screw rod (202) is connected to a sliding motor (203). A sliding block (204) is threadedly connected to the sliding screw rod (202). A force-applying cylinder (205) is fixedly connected to the bottom of the sliding block (204). A force-applying member (206) is fixedly connected to the output end of the force-applying cylinder (205). A pressure sensor is provided on the force-applying member (206). The test component (2) further includes two limit blocks (207). The two limit blocks (207) are respectively provided on both sides of the frame (103). The bottom of the limit block (207) is fixedly connected to the frame (103). A sliding hole (208) is formed on one side of the sliding frame (201). A displacement screw rod (209) is threadedly connected inside the sliding hole (208). The displacement screw rod (209) is rotatably connected inside the two limit blocks (207). One end of the displacement screw rod (209) is connected to a displacement motor (210). The clamping component (4) includes four groups of telescopic cylinders (401). The output end of the telescopic cylinder (401) is connected to a rotating block (415). The side wall of the rotating block (415) is rotatably connected to a connecting block (416) through a bearing. The top of the connecting block (416) is fixedly connected to a support plate (402). A regulating rod (403) is provided in the middle of the upper end face of the support plate (402). An activity groove (404) is formed inside the regulating rod (403). A displacement rod (405) is hermetically slidably connected inside the activity groove (404). A pressing plate (414) is fixedly connected to the displacement rod (405). A plurality of electromagnetic plates (406) are linearly and uniformly provided at the inner bottom of the activity groove (404). The bottoms of the plurality of electromagnetic plates (406) are fixedly connected to the support plate (402). A return spring (407) is provided on the top of the plurality of electromagnetic plates (406). A magnetic plate (408) is provided on the top of the return spring (407). The magnetic plate (408) is slidably connected to the inner wall of the activity groove (404). The top of the magnetic plate (408) is fixedly connected to the displacement rod (405). The opposite end faces of the electromagnetic plate (406) and the magnetic plate (408) are magnetically different. On the inner bottom of the adjusting rod (403) near one side of the force-applying member (206), an elastic frame (409) is communicated. A plurality of ventilation holes (410) are evenly formed in the top of the elastic frame (409). On the other side of the inner bottom of the adjusting rod (403), a ventilation pipe (411) is communicated. The other side of the ventilation pipe (411) is connected to an air pump (412), and the other side of the air pump (412) is connected to a connecting pipe (413).

2. The reinforced concrete two-way slab strength detection device according to claim 1, wherein: The moving assembly (3) includes two fixed blocks (301). The bottoms of the two fixed blocks (301) are fixedly connected to the box body (101). Between the opposite end faces of the two fixed blocks (301), two moving blocks (302) are provided. The bottoms of the four groups of telescopic cylinders (401) are respectively fixedly connected to the four corners of the upper end face of the moving block (302). A threaded hole (303) is formed inside the moving block (302). A bidirectional screw rod (304) is in threaded connection inside the threaded hole (303). The bidirectional screw rod (304) is rotatably connected inside the fixed block (301). One end of the bidirectional screw rod (304) is connected to a moving motor (305).

3. The reinforced concrete two-way slab strength detection device according to claim 2, wherein: There are two groups of the moving assemblies (3). The two groups of moving assemblies (3) are arranged in a crosswise and perpendicular manner, and there is a gap between the bidirectional screw rods (304) of the two groups of moving assemblies (3).

4. The strength detection device for a two-way reinforced concrete slab according to claim 1, characterized in that: A bidirectional plate (5) is provided between the opposite end faces of the elastic frames (409) and the pressing plates (414) of the multiple groups of clamping assemblies (4).

5. A method for detecting the strength of a reinforced concrete two-way slab, using a device for detecting the strength of a reinforced concrete two-way slab as described in claim 4, characterized in that, The detection method includes the following steps: Step 1: Control the movement of the moving assembly (3) according to the size of the bidirectional plate (5) and the number of force-bearing supports, so as to make the elastic frame (409) support the bidirectional plate (5). Then control the electromagnetic plate (406) to be energized and the current to gradually increase until it closely adheres to the upper end face of the bidirectional plate (5), completing the clamping and fixing of the bidirectional plate (5). Control the air pump (412) to start the air extraction work. At this time, the air inside the movable groove (404) and the elastic frame (409) is continuously discharged to the external environment, thereby increasing the negative pressure adsorption force of the elastic frame (409) on the bidirectional plate (5). Step 2: Control the force-applying member (206) to move to the detection point and apply a force to squeeze the bidirectional plate (5) at a set rate. During the loading process, the central control module (102) reads the reading detected by the pressure sensor in real time. Step 3: Use the expansion and contraction of the reset spring (407) to monitor the vibration of the two-way plate (5) during the detection process. When the reset spring (407) detects that the vibration intensity of the device is small, the air pump (412) injects high-pressure gas into the movable groove (404) and the elastic frame (409), and increases the current of the electromagnetic plate (406) to compress the gas volume inside the movable groove (404), so that the air pressure inside the movable groove (404) and the elastic frame (409) gradually rises to 50% of the rated maximum air pressure. When the reset spring (407) detects that the vibration intensity of the device is large, the air pump (412) continues to inject high-pressure gas into the movable groove (404) and the elastic frame (409), and increases the current of the electromagnetic plate (406) to compress the gas volume inside the movable groove (404), and the air pressure inside the movable groove (404) and the elastic frame (409) rises to the rated maximum air pressure; Step 4: After completing the detection of this detection point, then the cylinder (205) applies force to control the force-applying member (206) to move upward away from the two-way plate (5), and the sliding motor (203) and the displacement motor (210) are started successively to prompt the force-applying member (206) to move to the next detection point.

Images