Autoclaved aerated concrete block compressive strength detection system

Abstract

The invention provides an autoclaved aerated concrete block compressive strength detection system which comprises a working table, a supporting rod, a top panel, a press machine, an upper computer and a defect forming mechanism. The defect forming mechanism comprises a rotating ring, a rotary driving mechanism, a hydraulic rod, a lifting plate, a U-shaped frame, an electric rotary table, a mounting rod, a first electric push rod, a bearing plate, a first motor, a drill rod, an electric control injector, a connecting pipeline and an air heater, and after a concrete block sample is placed on the working table, the electric rotary table can drive the mounting rod to rotate; the drilling rod, the electric control injector or the hot-air blower can rotate to one side of a concrete block sample, the first motor can drive the drilling rod to drill the sample, the electric control injector injects an expanding agent into a hole groove, the hot-air blower conducts high-temperature curing on the expanding agent, and therefore the hole groove with cracks can be formed in the sample. Therefore, the concrete block under the actual use condition can be simulated, and the accuracy of the compressive strength detection result is improved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete processing, and in particular to a compressive strength detection system for autoclaved aerated concrete blocks. Background Art

[0002] Steam-pressurized concrete is a lightweight, heat-insulating, and fire-resistant building material. It is made by mixing cement, lime, sand (or fly ash), water, and aluminum powder, and curing it under high-pressure steam. It has the advantages of low density, low thermal conductivity, and good sound insulation. It is widely used in building walls, roof panels, floor panels, and other fields. With the rapid development of the construction industry and the continuous improvement of engineering quality, higher requirements are placed on the quality of building materials. For any building material, compressive strength is a crucial quality indicator, especially in architectural design, which directly affects the safety and durability of the structure. At present, the processing plant When the compressive strength of autoclaved aerated concrete blocks is tested, pressure is generally applied to the top of the autoclaved aerated concrete blocks by a press until the concrete blocks are damaged, and the maximum load can determine the compressive strength of the concrete blocks. However, when the compressive strength of concrete blocks is tested in current processing plants, most of them are tested on intact test blocks that have been cured. When concrete blocks are actually used, water pipes, wires, casings, etc. are passed through them, so that holes and partial cracks are formed inside the concrete test blocks. Testing intact test blocks cannot obtain accurate evaluation results of the compressive strength of concrete blocks under actual use. Summary of the invention

[0003] In view of this, the present invention proposes a compressive strength testing system for autoclaved aerated concrete blocks, which can simulate holes and cracks generated when autoclaved aerated concrete blocks are used, so that the result of compressive strength testing is closer to actual use conditions.

[0004] The technical solution of the present invention is achieved in this way:

[0005] A system for detecting the compressive strength of autoclaved aerated concrete blocks, comprising a work surface, a support rod, a top panel, a press, a host computer and a defect forming mechanism, wherein the top panel is located above the work surface, the support rod is connected to the bottom surface of the top panel and the top surface of the work surface, the press is arranged on the bottom surface of the top panel, and the host computer is arranged on the top surface of the top panel; the defect forming mechanism comprises a rotating ring, a rotating drive mechanism, a hydraulic rod, a lifting plate, a U-shaped frame, an electric turntable, a mounting rod, a first electric push rod, a bearing plate, a first motor, a drill rod, an electric-controlled injector, a connecting pipe and a hot air blower, the bottom surface of the rotating ring is rotationally connected to the top surface of the work surface, the rotating drive mechanism is used to drive the rotating ring to rotate, and the hydraulic rod is arranged It is arranged on the top surface of the rotating ring, and its output shaft is connected to the bottom surface of the lifting plate. The U-shaped frame is arranged on the top surface of the lifting plate. The electric turntable is arranged on the inner wall of the U-shaped frame, and its rotating surface is connected to the end of the mounting rod. The first electric push rod, the electric control injector and the hot air blower are arranged on the outer wall of the mounting rod. The output shaft of the first electric push rod is connected to the bearing plate. The first motor is arranged on the side wall of the bearing plate, and its output shaft is connected to the end of the drill rod. A cavity is arranged in the mounting rod, and an expansion agent is stored in the cavity. The connecting pipe connects the electric control injector and the cavity. The host computer is electrically connected to the press, the rotary drive mechanism, the hydraulic rod, the electric turntable, the first electric push rod, the first motor, the electric control injector and the hot air blower respectively.

[0006] Preferably, the top surface of the work table is provided with an annular groove, the bottom surface of the rotating ring is provided with a sliding block, and the sliding block is located in the annular groove.

[0007] Preferably, the rotary drive mechanism includes a second motor, a gear and a rack, the rack is arranged on the outer circumferential surface of the rotating ring and is distributed circumferentially, the second motor is embedded in the top surface of the work table, its output shaft is connected to the gear, the gear is meshed with the rack, and the host computer is electrically connected to the second motor.

[0008] Preferably, the defect forming mechanism also includes an air pump and an ash suction pipe, the air pump is arranged on the outer side wall of the mounting rod, one end of the ash suction pipe is connected to the air inlet of the air pump, and the host computer is electrically connected to the air pump.

[0009] Preferably, the ash suction pipe includes a fixed pipe, a telescopic pipe, a movable pipe, a second electric push rod and a force plate, and the fixed pipe, telescopic pipe and movable pipe are connected in sequence, the end of the fixed pipe away from the movable pipe is connected to the air inlet of the air pump, the force plate is arranged on the outer wall of the movable pipe, the second electric push rod is arranged on the outer wall of the fixed pipe, and its output shaft is connected to the side wall of the force plate, and the host computer is electrically connected to the second electric push rod.

[0010] Preferably, the ash suction pipe also includes a spring and an abutment plate, the abutment plate is located on the side of the force-bearing plate away from the moving tube, the spring connects the force-bearing plate and the abutment plate, and an arc portion is provided on the side of the abutment plate away from the second electric push rod.

[0011] Preferably, the ash suction pipe also includes a hollow tube and a telescopic rod, the hollow tube is arranged on the force-bearing plate, the spring is located in the hollow tube, one end of the telescopic rod extends into the hollow tube and is connected to the spring, and the other end is connected to the abutment plate.

[0012] Preferably, it further comprises a placing table, which is arranged on the top surface of the work table and located on the inner side of the rotating ring, and the press is located above the placing table.

[0013] Preferably, the defect forming mechanism further includes a supplementary tube and a valve, wherein the supplementary tube is arranged on the outer side wall of the mounting rod and communicates with the cavity, and the valve is arranged on the supplementary tube.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] ① Place the concrete block sample to be tested on the work surface and above the press. The first motor can drive the drill rod to rotate, and the first electric push rod can drive the first motor and the drill rod to move through the bearing plate, so that the drill rod can drill holes in the sample to simulate the situation in which holes need to be drilled in the concrete block to pass water and electricity pipes in actual use. Therefore, when the press is performing compressive strength testing, the test results can be closer to the actual situation;

[0016] ② After drilling the sample, the electric turntable can drive the mounting rod to rotate, so that the electronically controlled injector can rotate to the side of the drilled hole. Then the electronically controlled injector can inject the expansion agent in the mounting rod into the hole. The mounting rod is then rotated to align the hot air blower with the expansion agent, and the expansion agent is cured at high temperature. After the expansion agent expands, cracks are generated on the hole to simulate the hole with cracks, thereby further improving the accuracy of the compressive strength test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of a system for detecting compressive strength of autoclaved aerated concrete blocks according to the present invention;

[0019] Figure 2It is a schematic diagram of the connection structure of a U-shaped frame and a mounting rod of a system for testing the compressive strength of autoclaved aerated concrete blocks according to the present invention;

[0020] Figure 3 It is a structural schematic diagram of a mounting rod of a system for testing the compressive strength of autoclaved aerated concrete blocks according to the present invention;

[0021] Figure 4 It is a schematic diagram of the connection structure between a moving pipe and a stress-bearing plate of a system for testing the compressive strength of autoclaved aerated concrete blocks according to the present invention;

[0022] In the figure, 1, work surface; 2, support rod; 3, top panel; 4, press machine; 5, host computer; 6, rotating ring; 7, hydraulic rod; 8, lifting plate; 9, U-shaped frame; 10, electric turntable; 11, mounting rod; 12, first electric push rod; 13, bearing plate; 14, first motor; 15, drill rod; 16, electric control injector; 17, connecting pipe; 18, hot air blower; 19, cavity; 20, annular groove; 21, slider; 22, second motor; 23, gear; 24, rack; 25, air pump; 26, fixed pipe; 27, telescopic pipe; 28, moving pipe; 29, second electric push rod; 30, force plate; 31, spring; 32, abutment plate; 33, arc-shaped part; 34, hollow pipe; 35, telescopic rod; 36, placement table; 37, replenishing pipe; 38, valve. DETAILED DESCRIPTION

[0023] In order to better understand the technical content of the present invention, a specific embodiment is provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0024] See also Figures 1 to 4The present invention provides a system for detecting the compressive strength of autoclaved aerated concrete blocks, comprising a work surface 1, a support rod 2, a top panel 3, a press 4, a host computer 5 and a defect forming mechanism, wherein the top panel 3 is located above the work surface 1, the support rod 2 is connected to the bottom surface of the top panel 3 and the top surface of the work surface 1, the press 4 is arranged on the bottom surface of the top panel 3, and the host computer 5 is arranged on the top surface of the top panel 3; the defect forming mechanism comprises a rotating ring 6, a rotating drive mechanism, a hydraulic rod 7, a lifting plate 8, a U-shaped frame 9, an electric turntable 10, a mounting rod 11, a first electric push rod 12, a bearing plate 13, a first motor 14, a drill rod 15, an electric control injector 16, a connecting pipe 17 and a hot air blower 18, the bottom surface of the rotating ring 6 is rotatably connected to the top surface of the work surface 1, the rotating drive mechanism is used to drive the rotating ring 6 to rotate, and the hydraulic rod 7 is arranged on The top surface of the rotating ring 6, its output shaft is connected to the bottom surface of the lifting plate 8, the U-shaped frame 9 is arranged on the top surface of the lifting plate 8, the electric turntable 10 is arranged on the inner wall of the U-shaped frame 9, and its rotating surface is connected to the end of the mounting rod 11, the first electric push rod 12, the electric control injector 16 and the hot air blower 18 are arranged on the outer wall of the mounting rod 11, the output shaft of the first electric push rod 12 is connected to the bearing plate 13, the first motor 14 is arranged on the side wall of the bearing plate 13, and its output shaft is connected to the end of the drill rod 15, a cavity 19 is arranged in the mounting rod 11, and the expansion agent is stored in the cavity 19, the connecting pipe 17 connects the electric control injector 16 and the cavity 19, and the host computer 5 is electrically connected to the press 4, the rotary drive mechanism, the hydraulic rod 7, the electric turntable 10, the first electric push rod 12, the first motor 14, the electric control injector 16 and the hot air blower 18 respectively.

[0025] The intact concrete block sample that has been cured is placed on the work surface 1 and placed inside the rotating ring 6. The press machine 4 can directly descend to apply pressure to the sample, so as to detect the compressive strength of the sample in an intact state. A rotating ring 6 is also arranged on the work surface 1. The rotating ring 6 can be rotated under the drive of the rotary drive mechanism, so as to move the hydraulic rod 7 and the lifting plate 8 and other components on the hydraulic rod 7 to different positions of the sample. At the same time, the hydraulic rod 7 can drive the lifting plate 8 to rise and fall, and adjust the position of the components on the lifting plate 8. A U-shaped frame 9 is arranged on the lifting plate 8, and a rotatable mounting rod 11 is arranged in the U-shaped frame 9. The rotation of the mounting rod 11 can be realized by the electric turntable 10. The mounting rod 11 is a rectangular parallelepiped, and a first electric push rod 12, an electric-controlled injector 16 and a hot air blower 18 are respectively arranged on its three side walls. When different side walls are rotated toward the sample, the sample can be treated differently. When the first electric push rod 12 is toward the sample, it can drive the first motor 14 to move toward the sample through the bearing plate 13. At the same time, the first motor 14 can drive the drill rod 15 to rotate, and the drill rod 15 can drill holes in the outer wall of the sample, thereby simulating the situation in which water and electricity pipe holes are opened inside the concrete block when it is actually used. When the compressive strength is tested by the press 4, a test result close to the actual situation can be obtained, so as to accurately evaluate the compressive strength of the concrete block.

[0026] After drilling a hole in the side wall of the concrete block sample, the mounting rod 11 can be rotated to make the electric-controlled injector 16 face the hole groove. The electric-controlled injector 16 can extract the expansion agent in the cavity 19 of the mounting rod 11 through the connecting pipe 17 and inject it into the hole groove. The expansion agent is selected from materials such as epoxy resin. After the injection is completed, the electric turntable 10 drives the mounting rod 11 to rotate, and the hot air blower 18 is aligned with the hole groove and started. The expansion agent is rapidly solidified and expanded by high temperature, and cracks are generated in the hole groove. After the cracks are generated, the expansion agent is drilled again by the drill rod 15. After the hole groove is opened, a hole groove with cracks at the entrance can be obtained to simulate the hole groove with cracks under actual use conditions, so as to further improve the accuracy of the compressive strength test results of the concrete block sample. Since the rotating ring 6 can drive the hydraulic rod 7 to rotate, and the hydraulic rod 7 can drive the U-shaped frame 9 and the mounting rod 11 to rise and fall through the lifting plate 8, drilling and crack generation can be performed at different positions on the outer wall of the concrete block sample, so as to facilitate the comparison of multiple groups of tests.

[0027] Preferably, an annular groove 20 is disposed on the top surface of the work surface 1 , and a sliding block 21 is disposed on the bottom surface of the rotating ring 6 , and the sliding block 21 is located in the annular groove 20 .

[0028] When the rotary drive mechanism drives the rotating ring 6 to rotate, the slider 21 can move along the annular groove 20 to avoid deviation in movement, thereby ensuring that the mounting rod 11 can be rotated to different positions of the concrete block sample.

[0029] Preferably, the rotary drive mechanism includes a second motor 22, a gear 23 and a rack 24, the rack 24 is arranged on the outer circumferential surface of the rotating ring 6 and is distributed circumferentially, the second motor 22 is embedded in the top surface of the work table 1, and its output shaft is connected to the gear 23, the gear 23 is meshed with the rack 24, and the host computer 5 is electrically connected to the second motor 22.

[0030] The second motor 22 can drive the gear 23 to rotate, and the gear 23 can drive the rotating ring 6 to rotate through the rack 24 on the outer side wall of the rotating ring 6, thereby adjusting the position of the defect forming mechanism.

[0031] Preferably, the defect forming mechanism also includes an air pump 25 and an ash suction pipe, the air pump 25 is arranged on the outer wall of the mounting rod 11, one end of the ash suction pipe is connected to the air inlet of the air pump 25, and the host computer 5 is electrically connected to the air pump 25.

[0032] After drilling holes in the outer wall of the concrete block sample and drilling holes in the solidified expansion agent, some dust and particles will remain in the hole groove. The electric turntable 10 can drive the mounting rod 11 to rotate, so that the air pump 25 rotates to the outside of the hole groove of the concrete block sample, and then starts the air pump 25. The air pump 25 can suck out the dust in the hole groove through the dust suction pipe to prevent the residual dust in the hole groove from affecting the compressive strength test.

[0033] Preferably, the ash suction pipe includes a fixed pipe 26, a telescopic pipe 27, a movable pipe 28, a second electric push rod 29 and a force plate 30, and the fixed pipe 26, the telescopic pipe 27 and the movable pipe 28 are connected in sequence, and the end of the fixed pipe 26 away from the movable pipe 28 is connected to the air inlet of the air pump 25, the force plate 30 is arranged on the outer wall of the movable pipe 28, the second electric push rod 29 is arranged on the outer wall of the fixed pipe 26, and its output shaft is connected to the side wall of the force plate 30, and the upper computer 5 is electrically connected to the second electric push rod 29.

[0034] When sucking dust, after rotating the air pump 25 to one side of the hole groove of the concrete block sample through the mounting rod 11, start the second electric push rod 29, and the second electric push rod 29 can drive the moving tube 28 to move through the force plate 30, so that the telescopic tube 27 is stretched, and finally the moving tube 28 will extend into the hole groove. After starting the air pump 25, the dust in the hole groove can be completely sucked out from the moving tube 28, the telescopic tube 27 and the fixed tube 26 in turn, so as to avoid dust and particles remaining in the hole groove and affecting the compressive strength detection process.

[0035] Preferably, the ash suction pipe also includes a spring 31 and an abutment plate 32, the abutment plate 32 is located on the side of the force-bearing plate 30 away from the moving tube 28, the spring 31 connects the force-bearing plate 30 and the abutment plate 32, and an arc portion 33 is provided on the side of the abutment plate 32 away from the second electric push rod 29.

[0036] When the second electric push rod 29 drives the moving tube 28 to extend into the hole groove through the force plate 30, the force plate 30 will also enter the hole groove, and the arc portion 33 of the side wall of the abutment plate 32 will contact the edge of the hole groove and move the abutment plate 32 downward, so that the spring 31 is compressed, and finally the abutment plate 32 will completely enter the hole groove and abut on the inner wall of the hole groove under the action of the spring 31, ensuring that the moving tube 28 is stable inside the hole groove so that the dust can be completely sucked out.

[0037] Preferably, the ash suction pipe also includes a hollow tube 34 and a telescopic rod 35 . The hollow tube 34 is arranged on the force-bearing plate 30 , and the spring 31 is located in the hollow tube 34 . One end of the telescopic rod 35 extends into the hollow tube 34 and is connected to the spring 31 , and the other end is connected to the abutment plate 32 .

[0038] When the abutment plate 32 is moved by an external force, it will drive the telescopic rod 35 to move along the hollow tube 34 to compress the spring 31. The hollow tube 34 and the telescopic rod 35 can be used to limit the abutment plate 32, ensuring that when the arc portion 33 contacts the hole groove, the abutment plate 32 can be pushed to move and enter the hole groove.

[0039] Preferably, it further comprises a placing table 36 , which is arranged on the top surface of the work surface 1 and located on the inner side of the rotating ring 6 , and the press machine 4 is located above the placing table 36 .

[0040] The concrete block sample can be placed on the placement table 36 so that the press 4 can be lowered onto the concrete block sample to perform compressive strength testing.

[0041] Preferably, the defect forming mechanism further includes a supplementary pipe 37 and a valve 38 . The supplementary pipe 37 is arranged on the outer side wall of the mounting rod 11 and communicates with the cavity 19 . The valve 38 is arranged on the supplementary pipe 37 .

[0042] When the amount of expansion agent stored in the cavity 19 is reduced, the valve 38 can be opened to replenish the expansion agent through the replenishment pipe 37 to ensure that the detection process will not be stopped due to insufficient expansion agent storage.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A system for testing the compressive strength of autoclaved aerated concrete blocks, characterized in that: It includes a work surface, a support rod, a top panel, a press, a host computer and a defect forming mechanism, wherein the top panel is located above the work surface, the support rod connects the bottom surface of the top panel and the top surface of the work surface, the press is arranged on the bottom surface of the top panel, and the host computer is arranged on the top surface of the top panel; The defect forming mechanism includes a rotating ring, a rotating drive mechanism, a hydraulic rod, a lifting plate, a U-shaped frame, an electric turntable, a mounting rod, a first electric push rod, a bearing plate, a first motor, a drill rod, an electric-controlled injector, a connecting pipe and a hot air blower. The bottom surface of the rotating ring is rotatably connected to the top surface of the worktable. The rotating drive mechanism is used to drive the rotating ring to rotate. The hydraulic rod is arranged on the top surface of the rotating ring, and its output shaft is connected to the bottom surface of the lifting plate. The U-shaped frame is arranged on the top surface of the lifting plate. The electric turntable is arranged on the inner side wall of the U-shaped frame, and its rotating surface is connected to the end of the mounting rod. The first electric push rod, the electric-controlled injector and the hot air blower are arranged on the outer wall of the mounting rod. The output shaft of the first electric push rod is connected to the bearing plate. The first motor is arranged on the side wall of the bearing plate, and its output shaft is connected to the end of the drill rod. A cavity is arranged in the mounting rod, and an expansion agent is stored in the cavity. The connecting pipe connects the electric-controlled injector and the cavity. The host computer is electrically connected to the press, the rotating drive mechanism, the hydraulic rod, the electric turntable, the first electric push rod, the first motor, the electric-controlled injector and the hot air blower respectively.

2. The autoclaved aerated concrete block compressive strength detection system according to claim 1, characterized in that: The top surface of the work table is provided with an annular groove, and the bottom surface of the rotating ring is provided with a sliding block, and the sliding block is located in the annular groove.

3. The autoclaved aerated concrete block compressive strength detection system according to claim 1, characterized in that: The rotary drive mechanism includes a second motor, a gear and a rack. The rack is arranged on the outer circumferential surface of the rotating ring and is distributed circumferentially. The second motor is embedded in the top surface of the work table, and its output shaft is connected to the gear. The gear is meshed with the rack. The host computer is electrically connected to the second motor.

4. The autoclaved aerated concrete block compressive strength detection system according to claim 1, characterized in that: The defect forming mechanism also includes an air pump and an ash suction pipe. The air pump is arranged on the outer side wall of the mounting rod. One end of the ash suction pipe is connected to the air inlet of the air pump. The host computer is electrically connected to the air pump.

5. The autoclaved aerated concrete block compressive strength detection system according to claim 4, characterized in that: The ash suction pipe includes a fixed pipe, a telescopic pipe, a movable pipe, a second electric push rod and a force plate, wherein the fixed pipe, the telescopic pipe and the movable pipe are connected in sequence, the end of the fixed pipe away from the movable pipe is connected to the air inlet of the air pump, the force plate is arranged on the outer wall of the movable pipe, the second electric push rod is arranged on the outer wall of the fixed pipe, and its output shaft is connected to the side wall of the force plate, and the host computer is electrically connected to the second electric push rod.

6. The autoclaved aerated concrete block compressive strength testing system according to claim 5, characterized in that: The ash suction pipe also includes a spring and an abutment plate, the abutment plate is located on the side of the force-bearing plate away from the moving tube, the spring connects the force-bearing plate and the abutment plate, and an arc portion is provided on the side of the abutment plate away from the second electric push rod.

7. The autoclaved aerated concrete block compressive strength testing system according to claim 6, characterized in that: The ash suction pipe also includes a hollow tube and a telescopic rod. The hollow tube is arranged on the force-bearing plate. The spring is located in the hollow tube. One end of the telescopic rod extends into the hollow tube and is connected to the spring, and the other end is connected to the abutment plate.

8. The autoclaved aerated concrete block compressive strength testing system according to claim 1, characterized in that: It also includes a placing table, which is arranged on the top surface of the work table and located on the inner side of the rotating ring, and the press is located above the placing table.

9. The autoclaved aerated concrete block compressive strength testing system according to claim 1, characterized in that: The defect forming mechanism also includes a supplementary pipe and a valve. The supplementary pipe is arranged on the outer side wall of the mounting rod and is connected with the cavity. The valve is arranged on the supplementary pipe.

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