Concrete hardness detection device for concrete

Abstract

The invention relates to the technical field of concrete detection, in particular to a concrete hardness detection device for concrete, which comprises a high-pressure sealed cabin mounted at the upper end of a base, a cabin door is mounted on one side of the high-pressure sealed cabin, a drainage pipe is connected to one end of the high-pressure sealed cabin, and a supporting seat is mounted at the center in the base. A plurality of groups of through holes are formed in the surface of the supporting seat, a first pressing plate is slidably arranged at the upper end of the supporting seat, one end of the first pressing plate is connected with a second pressing plate, and a sliding seat is slidably arranged at the lower end of the second pressing plate. The real stress state of the concrete in humid and high-temperature environments such as basements and high-temperature workshops is reproduced, so that the detection result has more engineering reference significance, and meanwhile, the corresponding compression resistance limit of the concrete plate in the corrosion state can be more accurately detected through the combination test of the corrosion environment and gradually increased pressure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete detection, in particular to a concrete hardness detection device for concrete. BACKGROUND

[0002] As one of the most widely used building materials in modern civil engineering, the hardness, compressive strength and other mechanical properties of concrete directly determine the safety, durability and service life of the building structure. With the extension of construction engineering to complex scenes such as high altitude, deep underground and extreme climate areas, the environmental conditions faced by concrete structures during the service period are becoming more and more severe. The traditional concrete hardness detection technology has been difficult to meet the needs of precision and scene performance evaluation, and the development of new detection devices has become an inevitable trend of the industry technology development. When the traditional device detects the concrete slab, more kinds of different equipment are needed to detect the concrete slab in different environments, which leads to low efficiency during detection, and the single scene limits the detection results of the concrete slab, thereby reducing the accuracy of the detection data. SUMMARY

[0003] The present application breaks through the limitations of traditional dry normal temperature detection by detecting the condition of the concrete slab under different pressures when it is subjected to thermal corrosion, reproduces the real stress state of the concrete in the humid and high temperature environment such as the basement and the high temperature workshop, makes the detection results more meaningful for engineering reference, and can more accurately detect the corresponding compressive limit of the concrete slab under the corrosion state through the combined test of the corrosion environment and the gradually increasing pressure.

[0004] To achieve the above purpose, the present application provides the following technical scheme: a concrete hardness detection device for concrete, comprising a high-pressure sealed cabin installed on the upper end of the base, a hatch is installed on one side of the high-pressure sealed cabin, a drain pipe is connected to one end of the high-pressure sealed cabin, a support seat is installed in the center of the inside of the base, and a plurality of through holes are formed on the surface of the support seat, a first pressing plate is slidably connected to the upper end of the support seat, a second pressing plate is connected to one end of the first pressing plate, a sliding seat is slidably connected to the lower end of the second pressing plate, a support rod is connected to the outer side of the sliding seat in a damping manner, a pressing seat is connected to the other end of the support rod in a damping manner, and a pressure relief pipe is installed on the upper end of the high-pressure sealed cabin. A first air inlet pipe for conveying hot gas flow is installed on the upper end of the high-pressure sealed cabin, one end of the first air inlet pipe extends into the high-pressure sealed cabin through the high-pressure sealed cabin, a stop valve A is arranged in the first air inlet pipe, the stop valve A is connected to one end of a first gear, the first gear is engaged with a first rack on the outer side, a fixed plate is fixedly connected to one side of the sliding seat, a winding roller is fixedly connected to the outer side of the fixed plate, and the output end of the winding roller is connected to a magnetic block. The high-pressure sealed cabin is communicated with a second air inlet pipe for conveying cold air on one side, a stop valve B is installed inside the second air inlet pipe, a second gear is connected to one end of the stop valve B, a guide pipe is communicated with the outside of the first air inlet pipe, and a second rack is connected to one end of the guide pipe.

[0005] Preferably, a cylinder is installed at the center of the upper end of the high-pressure sealed cabin, a top rod is connected to the output end of the cylinder, the top rod extends through the high-pressure sealed cabin to the inside and is connected with a first pressing plate, a plurality of groups of springs A are fixedly connected to one end of the first pressing plate, and the other ends of the plurality of groups of springs A are connected with a second pressing plate.

[0006] Preferably, a motor is fixedly connected to one side of the second pressing plate, a reciprocating screw rod is connected to the output end of the motor, the reciprocating screw rod is located at the lower end of the second pressing plate and is rotatably connected with the second pressing plate, the reciprocating screw rod is connected with a slide ball nut pair, and a protective cover is sleeved with the outside of the first pressing plate, the second pressing plate and the motor.

[0007] Preferably, a winding roller is internally wound with a pull rope, a guide plate is fixedly connected to one side of the fixed plate, and the guide plate and the winding roller are located on the same side of the fixed plate.

[0008] Preferably, one end of the pull rope penetrates through the guide plate and is connected with a magnetic suction block, and the magnetic suction block is adsorbed with the first rack.

[0009] Preferably, a first valve rod is fixedly connected to one end of the stop valve, the first valve rod penetrates and extends to the outside and is connected with the first gear, the other end of the first air inlet pipe is connected with a hot air equipment, one end of the first rack penetrates through the high-pressure sealed cabin and extends to the outside, and the first rack is dampingly connected with the high-pressure sealed cabin, a valve is installed inside the pressure relief pipe, a rotating shaft is fixedly connected to one end of the valve, and a rotating disc is connected to the other end of the rotating shaft.

[0010] Preferably, a second valve rod is fixedly connected to one end of the stop valve B, the other end of the second valve rod penetrates through the second air inlet pipe, extends to the outside and is connected with the second gear, and the other end of the second air inlet pipe is connected with a cold air equipment.

[0011] Preferably, a connecting pipe is fixedly connected to the outside of the first air inlet pipe, the other end of the connecting pipe penetrates through the high-pressure sealed cabin, extends to the outside and is connected with the guide pipe, and a push rod is movably connected inside the guide pipe.

[0012] Preferably, a spring B is fixedly connected to one end of the push rod inside the guide pipe, the other end of the spring B is connected with the inner wall of the guide pipe, one end of the push rod outside the guide pipe is connected with the second rack, the second rack and the second gear are located on the same plane, and the second rack is engaged with the second gear.

[0013] Compared with the prior art, the application has the beneficial effects that: 1、The application breaks through the limitation of traditional dry normal temperature detection by detecting the condition of the concrete plate under different pressures when subjected to thermal corrosion, reproduces the real stress state of the concrete in a humid and high-temperature environment such as a basement and a high-temperature workshop, and makes the detection result more meaningful for engineering reference, and through the combined test of the corrosion environment and the gradually increasing pressure, the corresponding compressive limit of the concrete plate in the corrosion state can be more accurately detected.

[0014] 2、After being used for a period of time, the cold air can change the high-temperature and high-temperature humidity environment in the high-pressure sealed cabin into a low-temperature and low-temperature humidity environment, so that the concrete plate can be quickly switched between the two environments, simulate the environment sudden change of scenes such as large diurnal temperature difference or high-humidity cold chain workshop, capture the internal stress caused by the condensation of humidity in the concrete due to the rapid temperature drop, and the influence of cold corrosion on the structural strength, and at the same time of the environment switching, through gradually increasing the pressure, the whole process data of the concrete plate in the cold corrosion state can be recorded in real time, providing accurate basis for the design and maintenance of the concrete structure in the low-temperature and high-humidity environment.

[0015] 3、The device can simulate complex actual environment and more accurately detect the hardness and compressive performance of the concrete under real working conditions by controlling the air pressure in the high-pressure sealed cabin, so that the detection result has more engineering reference value, and the cold and hot transfer efficiency can be promoted under high-pressure environment, so that the temperature is transferred to the concrete plate faster, which helps to more quickly simulate the performance change of the concrete in the temperature change environment, shorten the detection time and improve the detection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the application; Figure 2 It is a schematic diagram of the internal structure of the high-pressure sealed cabin of the application; Figure 3 It is a schematic diagram of the internal structure of the high-pressure sealed cabin of the application; Figure 4 It is a schematic diagram of the internal structure of the high-pressure sealed cabin of the application; Figure 5 It is a partial structure diagram of the application; Figure 6 It is a partial structure diagram of the application; Figure 7 It is a partial structure sectional view of the application; Figure 8 It is a Figure 2 structure enlarged view of A in the application; Figure 9 It is a Figure 5 structure enlarged view of B in the application.

[0017] In the figure: 1, base; 2, high-pressure sealed cabin; 3, cabin door; 4, support seat; 5, air cylinder; 6, first air inlet pipe; 7, pressure relief pipe; 8, rotating disc; 9, rotating shaft; 10, valve; 11, first pressing plate; 12, spring A; 13, second pressing plate; 14, motor; 15, protective cover; 16, reciprocating screw rod; 17, sliding seat; 18, support rod; 19, pressing seat; 20, fixed plate; 23, winding roller; 24, pull rope; 25, magnetic block; 26, guide plate; 27, first gear; 28, first rack; 29, first valve rod; 30, second air inlet pipe; 31, second gear; 32, second valve rod; 33, guide pipe; 34, connecting pipe; 35, push rod; 36, second rack; 37, drain pipe; 38, spring B. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0019] Reference Figures 1-9 The present application provides a concrete hardness detection device for concrete, which comprises a high-pressure sealed cabin 2 installed on the upper end of a base 1, a cabin door 3 installed on one side of the high-pressure sealed cabin 2, a drain pipe 37 connected to one end of the high-pressure sealed cabin 2, a support seat 4 installed at the center of the inside of the base 1, a plurality of through holes formed on the surface of the support seat 4, a first pressing plate 11 slidingly connected to the upper end of the support seat 4, a second pressing plate 13 connected to one end of the first pressing plate 11, a sliding seat 17 slidingly connected to the lower end of the second pressing plate 13, a support rod 18 connected to the outer side of the sliding seat 17 in a damping manner, a pressing seat 19 connected to the other end of the support rod 18 in a damping manner, and a pressure relief pipe 7 installed on the upper end of the high-pressure sealed cabin 2. A first air inlet pipe 6 for conveying hot air flow is installed on the upper end of the high-pressure sealed cabin 2, one end of the first air inlet pipe 6 extends through the high-pressure sealed cabin 2 to the inside of the high-pressure sealed cabin 2, a stop valve A is arranged in the first air inlet pipe 6, the stop valve A is connected to one end of a first gear 27, the first gear 27 is engaged with a first rack 28 on the outer side, a fixed plate 20 is fixedly connected to one side of the sliding seat 17, a winding roller 23 is fixedly connected to the outer side of the fixed plate 20, and a magnetic block 25 is connected to the output end of the winding roller 23. The high-pressure sealed cabin 2 is communicated with a second air inlet pipe 30 for conveying cold air on one side, and a stop valve B is installed inside the second air inlet pipe 30. One end of the stop valve B is connected with a second gear 31. The first air inlet pipe 6 is communicated with a guide pipe 33 on the outside, and one end of the guide pipe 33 is connected with a second rack 36.

[0020] In an optional embodiment, a cylinder 5 is installed at the center of the upper end of the high-pressure sealed cabin 2. The output end of the cylinder 5 is connected with a top rod which extends through the high-pressure sealed cabin 2 to the inside and is connected with the first pressing plate 11. One end of the first pressing plate 11 is fixedly connected with a plurality of groups of springs A12, and the other end is connected with the second pressing plate 13. When using the device, the worker opens the hatch 3, and after the hatch 3 is opened, the concrete plate to be detected is placed on the upper surface of the support seat 4. After the concrete plate is placed stably, the worker injects water source into the inside of the base 1, and the height of the water source should not be higher than the lower surface of the support seat 4. After the water source is injected, the worker closes the hatch 3. When using the device, the worker starts the cylinder 5. After the cylinder 5 is started, the first pressing plate 11 is pushed down through the top rod. When the first pressing plate 11 is lowered, the second pressing plate 13 is lowered synchronously because the first pressing plate 11 is connected with the second pressing plate 13 through the plurality of groups of springs A12.

[0021] In an optional embodiment, the second pressing plate 13 is fixedly connected with a motor 14 on one side. The output end of the motor 14 is connected with a reciprocating screw rod 16. The reciprocating screw rod 16 is located at the lower end of the second pressing plate 13 and is rotatably connected with the second pressing plate 13. The reciprocating screw rod 16 is connected with a sliding seat 17 through a ball nut pair. The first pressing plate 11, the second pressing plate 13, and the motor 14 are sleeved with a protective cover 15 on the outside. As described above, when the second pressing plate 13 is lowered, the support rod 18 and the pressing seat 19 are lowered synchronously through the sliding seat 17. Because the both ends of the support rod 18 are connected with the sliding seat 17 and the pressing seat 19 through damping, when the pressing seat 19 is lowered, it will keep the position at the center of the concrete plate. After the pressing seat 19 is lowered and contacts the surface of the concrete plate, the cylinder 5 will stop driving. After the cylinder 5 stops driving, the pressing seat 19 contacts the surface of the concrete plate, and the initial state of the pressing seat 19 contacting the concrete plate will not cause extrusion to the concrete plate. After the pressing seat 19 stops lowering, the motor 14 is started. After the motor 14 is started, the motor 14 drives the reciprocating screw rod 16 to rotate. When the reciprocating screw rod 16 rotates, the reciprocating screw rod 16 drives the sliding seat 17 to move horizontally along the reciprocating screw rod 16. At this time, because the initial angle between the support rod 18 and the pressing seat 19 is greater than 45° and less than 90°, the sliding seat 17 moves along the reciprocating screw rod 16. When the sliding seat 17 moves, the support rod 18 and the pressing seat 19 are connected through damping. Therefore, when the sliding seat 17 moves, the support rod 18 and the pressing seat 19 will keep the position at the center of the concrete plate. Figure 6As shown, and the pressure seat 19 initial with the concrete surface friction, so in the sliding seat 17 moves, the one end of the support rod 18 will be turned with the pressure seat 19 as the center, so when the support rod 18 is turned, the other end of the support rod 18 will gradually extrude the spring A12 between the first pressing plate 11 and the second pressing plate 13 through 17, at this time the spring A12 will directly exert a downward force on the pressure seat 19, and cooperate with the friction between the concrete plate surface and the pressure seat 19, the pressure seat 19 will not move when it is under pressure, so when the sliding seat 17 moves and drives the support rod 18 to turn synchronously, as the angle of the support rod 18 changes, the pressure exerted on the pressure seat 19 will gradually increase, when the angle between the support rod 18 and the pressure seat 19 approaches 90°, the pressure exerted on the pressure seat 19 by the support rod 18 reaches a maximum value at this time, as the sliding seat 17 continues to move driven by the reciprocating screw rod 16, the support rod 18 continues to turn driven by the sliding seat 17, at this time the pressure exerted on the pressure seat 19 by the support rod 18 will gradually decrease, and the pressure exerted on the concrete plate will gradually decrease, so that the force exerted on the pressure seat 19 gradually increases from small to large during detection, so that different pressures are applied at different stages during detection of the concrete plate, so that the deformation of the concrete gradually changes, so that the worker can more accurately record the true situation of the concrete plate under pressure, and thus better record the data. If the initial angle between the support rod 18 and the pressure seat 19 is less than 45°, the force exerted by the support rod 18 on the pressure seat 19 will change to a horizontal thrust when the support rod 18 exerts pressure on the pressure seat 19, so that the pressure seat 19 will slide on the surface of the concrete plate.

[0022] In an optional embodiment, the winding roller 23 has a pull rope 24 wound inside, the fixed plate 20 is fixedly connected with a guide plate 26 on one side, and the guide plate 26 is located on the same side of the fixed plate 20 as the winding roller 23, when the sliding seat 17 moves to the end of the reciprocating screw rod 16 away from the motor 14, the fixed plate 20 will move synchronously with the sliding seat 17 to drive the winding roller 23 and the magnetic block 25 to move.

[0023] In an optional embodiment, one end of the pull rope 24 penetrates through the guide plate 26 and is connected with the magnetic block 25, and the magnetic block 25 is attracted to the first rack 28. As described above, when the fixed plate 20 moves to the end of the reciprocating screw rod 16 away from the motor 14, the magnetic block 25 will contact the first rack 28, and then the magnetic block 25 will be attracted to the first rack 28, and when the magnetic block 25 is attracted to the first rack 28, the fixed plate 20 will push the first rack 28 to move to one side as the fixed plate 20 continues to move, and the first rack 28 will drive the first gear 27 to rotate synchronously as the first rack 28 moves to one side.

[0024] In an optional embodiment, the one end of the stop valve is fixedly connected with the first valve rod 29, the first valve rod 29 extends through to the outside and is connected with the first gear 27, the other end of the first air inlet pipeline 6 is connected with the hot air equipment, the one end of the first rack 28 extends through the high-pressure sealed cabin 2 to the outside, and the first rack 28 is dampingly connected with the high-pressure sealed cabin 2, the valve 10 is installed inside the pressure relief pipe 7, the one end of the valve 10 is fixedly connected with the rotating shaft 9, the other end of the rotating shaft 9 is connected with the rotating disc 8, and the initial state of the stop valve A inside the first air inlet pipeline 6 is an open state. As described above, when the first gear 27 rotates, the first valve rod 29 will be rotated synchronously, when the first valve rod 29 rotates, the stop valve A will be rotated synchronously, and when the stop valve A rotates, the first air inlet pipeline 6 will be closed. When the initial state of the stop valve is started, the air cylinder 5 drives the first pressing plate 11 to descend, the hot air equipment will be opened synchronously, after the hot air equipment is opened, the high-pressure sealed cabin 2 inside will be transported hot air through the first air inlet pipeline 6, because the high-pressure sealed cabin 2 contains a certain amount of water source in the initial state, when the hot air enters the high-pressure sealed cabin 2, the water source will be injected into the water source, after the hot air contacts the water source, the water source will be heated, at the same time of heating, when the hot air enters the water source, the water source will be active, under the double action of the water source being active and heated, the high-pressure sealed cabin 2 will be heated at the same time, and contains a certain amount of water vapor, when the concrete plate is detected, the heat inside the high-pressure sealed cabin 2 will be conducted to the concrete plate, when the heat is conducted to the concrete plate, the concrete plate will be in a high-humidity environment due to the water vapor, and the high temperature and high-temperature humidity will cause a certain degree of corrosion to the concrete plate, at this time, the gradually expanding pressure of the pressing seat 19 on the concrete plate, so as to detect the state of the concrete plate under different pressures when it is subjected to hot corrosion, thereby breaking through the limitation of traditional dry normal temperature detection, reproducing the real stress state of the concrete in the humid and high-temperature environment of the basement and the high-temperature workshop, so that the detection result has more engineering reference significance, and through the combined test of the corrosion environment and the gradually increasing pressure, the corresponding compressive limit of the concrete plate in the corrosion state can be more accurately detected; With the continuous rotation of the reciprocating wire rod 16, the slide 17 will drive the fixed plate 20 to gradually reset. When the fixed plate 20 resets, it will simultaneously reset the winding roller 23 and the magnetic block 25. At this time, when the fixed plate 20 resets, because the first rack 28 is connected with the high-pressure sealed cabin 2 by damping, and the winding force of the winding roller 23 on the pull rope 24 is less than the adsorption force of the magnetic block 25 and the first rack 28, and less than the damping force of the first rack 28 and the high-pressure sealed cabin 2, and the adsorption force of the magnetic block 25 and the first rack 28 is greater than the damping force of the first rack 28 and the high-pressure sealed cabin 2, and with the movement of the fixed plate 20, the winding roller 23 will gradually move, which will make the pull rope 24 inside the winding roller 23 continuously pull out. When the fixed plate 20 approaches the reset point, the length of the pull rope 24 will reach the limit state. When the pull rope 24 reaches the limit length, the first rack 28 will be moved and reset by the gradual movement of the fixed plate 20. When the first rack 28 resets and moves, it will drive the first gear 27 to rotate again, and when the first gear 27 rotates, it will open the stop valve A inside the first air inlet pipe 6 again, so that the stop valve A inside the first air inlet pipe 6 can be switched between long-time opening and long-time closing during use of the device. When using the device, the operator can rotate the rotating disc 8, which will rotate the rotating shaft 9 synchronously when the rotating disc 8 rotates, which will drive the valve 10 to rotate, so that the operator can control the opening and closing of the pressure relief pipe 7 by rotating the rotating disc 8 when using the device, thereby controlling the air pressure inside the high-pressure sealed cabin 2.

[0025] In an optional embodiment, the second valve rod 32 is fixedly connected to one end of the stop valve B, the other end of the second valve rod 32 extends through the second air inlet pipe 30 to the outside and is connected with the second gear 31, and the other end of the second air inlet pipe 30 is connected with the cold air equipment. The initial state of the stop valve B is closed, and the cold air equipment will be started synchronously when the cylinder 5 is started.

[0026] In an optional embodiment, the connecting pipe 34 is fixedly connected to the outside of the first air inlet pipe 6, the other end of the connecting pipe 34 extends through the high-pressure sealed cabin 2 to the outside and is connected with the guide pipe 33, and the push rod 35 is movably connected in the guide pipe 33. As described above, when the stop valve A is closed, the air pressure inside the first air inlet pipe 6 will increase, and the gas entering the first air inlet pipe 6 will enter the connecting pipe 34 due to the pressure, the connecting pipe 34 will deliver the gas to the inside of the guide pipe 33, and the gas entering the guide pipe 33 will push the push rod 35 outwards.

[0027] In an optional embodiment, the push rod 35 is fixedly connected with a spring B 38 at one end inside the guide pipe 33, the other end of the spring B 38 is connected with the inner wall of the guide pipe 33, the push rod 35 is connected with the second rack 36 at one end outside the guide pipe 33, and the second rack 36 is located in the same plane as the second gear 31 and is engaged with the second gear 31, when the push rod 35 is pushed out, it will synchronously push the second rack 36 to move, when the second rack 36 moves, it will drive the second gear 31 to rotate, when the second gear 31 rotates, it will synchronously drive the second valve rod 32 to rotate to open the stop valve B inside the second air inlet pipe 30, and then after the stop valve B is opened, cold air will quickly enter the high-pressure sealed cabin 2 inside; When the cold air enters the high-pressure sealed cabin 2, at this time the stop valve A is closed, so that the heating inside the high-pressure sealed cabin 2 is stopped, therefore when the cold air enters the high-pressure sealed cabin 2, it will quickly cool the inside of the high-pressure sealed cabin 2, after the inside of the high-pressure sealed cabin 2 is cooled, at this time the cold air will change the high-temperature and high-temperature humid environment inside the high-pressure sealed cabin 2 into a low-temperature and low-temperature humid environment, thereby quickly switching the concrete plate between the two environments, when the cold air enters the high-pressure sealed cabin 2 to cool the inside of the high-pressure sealed cabin 2, at this time the support rod 18 is reset when the slide 17 is reset, which will gradually expand the pressure of the pressure seat 19 on the concrete plate, thereby detecting the compressive resistance of the concrete plate in the cold corrosion environment, thereby simulating the sudden change of the environment such as large diurnal temperature difference or high-humidity cold chain workshop, capturing the internal stress caused by the condensation of moisture inside the concrete due to the rapid drop in temperature, and the influence of cold corrosion on the structural strength, at the same time, through the gradual pressurization, the whole process data of the concrete plate in the cold corrosion state can be recorded in real time, providing accurate basis for the design and maintenance of concrete structures in low-temperature and high-humidity environments; And the above-mentioned can control the pressure relief of the pressure relief pipe 7 to control the pressure inside the high-pressure sealed cabin 2, and then control the pressure inside the high-pressure sealed cabin 2 through the pressure relief pipe 7, and in a high-pressure environment, it will promote the transfer efficiency of cold and heat, so that the temperature is transferred to the concrete plate more quickly, and in different pressure environments, it will further detect the stress state of the auxiliary concrete plate in different pressure environments, thereby controlling the pressure inside the high-pressure sealed cabin 2, the device can simulate complex actual environment, more accurately detect the hardness and compressive resistance of concrete in real working conditions, so that the detection result has more engineering reference value, and in a high-pressure environment, it can promote the transfer efficiency of cold and heat, so that the temperature is transferred to the concrete plate more quickly, which helps to more quickly simulate the performance change of concrete in temperature change environment, shorten the detection time and improve the detection efficiency; After the reset of the stop valve A, the hot gas will be discharged through the first air inlet pipeline 6, at this time the push rod 35 will be gradually reset by the pulling force of the spring B38, when the push rod 35 is reset, it will drive the second rack 36 to reset synchronously, and when the second rack 36 is reset, it will drive the second gear 31 to rotate synchronously, thereby closing the stop valve B inside the second air inlet pipeline 30; As can be seen from the above, when the device is in use, the internal environment of the high-pressure sealed warehouse 2 can be changed to a high-temperature and humid environment while detecting different pressure changes of the concrete slab, and when in use, the internal temperature of the high-pressure sealed warehouse 2 can be gradually lowered by alternating cold and hot, and after the internal temperature of the high-pressure sealed warehouse 2 is lowered, low-temperature and low-temperature humidity are formed inside the high-pressure sealed warehouse 2, and when in use, the pressure state inside the high-pressure sealed warehouse 2 can be changed by opening and closing the pressure relief pipe 7, so that when the device is in use, the worker can simulate the detection of the concrete slab under various environments according to the actual situation, thereby greatly improving the detection efficiency of the device when in use.

[0028] Working principle: when using the equipment, the worker opens the hatch 3, and after the hatch 3 is opened, the concrete slab to be detected is placed on the upper surface of the support seat 4, and after the concrete slab is placed stably, the worker injects water into the base 1, and the water height should not be higher than the lower surface of the support seat 4, and after the water is injected, the worker closes the hatch 3 at this time; When using the equipment for detection, the worker starts the air cylinder 5, which will push the first pressing plate 11 down through the top rod, and when the first pressing plate 11 is lowered, the second pressing plate 13 will be lowered synchronously because the first pressing plate 11 is connected to the second pressing plate 13 through multiple groups of springs A12, and when the second pressing plate 13 is lowered, the support rod 18 and the pressing seat 19 will be lowered synchronously through the sliding seat 17, and because the both ends of the support rod 18 are connected to the sliding seat 17 and the pressing seat 19 through damping, the pressing seat 19 will keep the position at the center of the concrete slab in the initial state when it is lowered, and after the pressing seat 19 comes into contact with the surface of the concrete slab after being lowered, the air cylinder 5 will stop driving at this time, and after the air cylinder 5 stops driving, the pressing seat 19 comes into contact with the surface of the concrete slab, and the initial state of the pressing seat 19 contacting the concrete slab will not cause extrusion to the concrete slab, and referring to Figure 7 As shown, the lower end of the pressing seat 19 is provided with multiple groups of protrusions, which will increase the friction between the pressing seat 19 and the concrete slab, so that the pressing seat 19 will not move on the surface of the concrete slab; After the pressing seat 19 stops descending, the motor 14 is started at this time, and after the motor 14 is started, the motor 14 will drive the reciprocating screw rod 16 to rotate, and when the reciprocating screw rod 16 rotates, the reciprocating screw rod 16 will drive the sliding seat 17 to move horizontally along the reciprocating screw rod 16, and at this time, the sliding seat 17 moves because the initial angle between the support rod 18 and the pressing seat 19 is greater than 45° and less than 90°, referring to Figure 6As shown, and the pressure seat 19 initial with the concrete surface friction, so in the sliding seat 17 moves, the support rod 18 one end will be turned with the pressure seat 19 as the center, so when the support rod 18 is turned, the other end of the support rod 18 will be gradually squeezed between the first pressure plate 11 and the second pressure plate 13 by 17, at this time the spring A12 will directly exert a downward force on the pressure seat 19, and cooperate with the friction between the concrete plate surface and the pressure seat 19, the pressure seat 19 will not move when under pressure, so when the sliding seat 17 moves with the support rod 18 synchronous turning, with the change of the angle of the support rod 18, the pressure on the pressure seat 19 will gradually increase, when the angle between the support rod 18 and the pressure seat 19 is close to 90°, the pressure on the pressure seat 19 exerted by the support rod 18 reaches the maximum value at this time, with the continuous movement of the sliding seat 17 driven by the reciprocating screw rod 16, the pressure on the pressure seat 19 exerted by the support rod 18 will gradually decrease, and the pressure on the concrete plate will gradually decrease; When the sliding seat 17 moves to the end of the reciprocating screw rod 16 away from the motor 14, the fixed plate 20 will move with the sliding seat 17 at the same time, and the winding roller 23 and the magnetic block 25 will move with the fixed plate 20, when the fixed plate 20 moves to the end of the reciprocating screw rod 16 away from the motor 14, the magnetic block 25 will contact the first rack 28, and then the magnetic block 25 will be attracted to the first rack 28, and when the magnetic block 25 is attracted to the first rack 28, the fixed plate 20 will push the first rack 28 to move to one side, and the first rack 28 will drive the first gear 27 to rotate at the same time, and the first valve rod 29 will rotate at the same time, and the first valve A will rotate at the same time, and the first air inlet pipe 6 will be closed at the same time; When the sliding seat 17 moves to the end of the reciprocating screw rod 16 away from the motor 14, the fixed plate 20 will move with the sliding seat 17 at the same time, and the winding roller 23 and the magnetic block 25 will move with the fixed plate 20, when the fixed plate 20 moves to the end of the reciprocating screw rod 16 away from the motor 14, the magnetic block 25 will contact the first rack 28, and then the magnetic block 25 will be attracted to the first rack 28, and when the magnetic block 25 is attracted to the first rack 28, the fixed plate 20 will push the first rack 28 to move to one side, and the first rack 28 will drive the first gear 27 to rotate at the same time, and the first valve rod 29 will rotate at the same time, and the first valve A will rotate at the same time, and the first air inlet pipe 6 will be closed at the same time; With the continuous rotation of the reciprocating wire rod 16, the slide 17 will drive the fixed plate 20 to gradually reset. When the fixed plate 20 resets, it will simultaneously reset the winding roller 23 and the magnetic block 25. At this time, when the fixed plate 20 resets, because the first rack 28 is connected with the high-pressure sealed cabin 2 by damping, and the winding force of the winding roller 23 on the pull rope 24 is less than the adsorption force of the magnetic block 25 and the first rack 28, and less than the damping force of the first rack 28 and the high-pressure sealed cabin 2, and the adsorption force of the magnetic block 25 and the first rack 28 is greater than the damping force of the first rack 28 and the high-pressure sealed cabin 2, and with the movement of the fixed plate 20, the winding roller 23 will gradually move, which will make the pull rope 24 inside the winding roller 23 continuously pull out. When the fixed plate 20 approaches the reset point, the length of the pull rope 24 will reach the limit state. When the pull rope 24 reaches the limit length, the first rack 28 will move and reset simultaneously by the gradual movement of the fixed plate 20. When the first rack 28 resets and moves, it will drive the first gear 27 to rotate again, and the first gear 27 will open the stop valve A inside the first air inlet pipe 6 again when it rotates. When the stop valve A is closed, the air pressure inside the first air inlet pipe 6 will increase. When the air pressure inside the first air inlet pipe 6 increases, the gas entering the first air inlet pipe 6 will enter the connecting pipe 34 due to the pressure. The connecting pipe 34 will transport the gas to the guide pipe 33. When the gas enters the guide pipe 33, it will push the push rod 35 outwards. When the push rod 35 pushes outwards, it will simultaneously push the second rack 36 to move. When the second rack 36 moves, it will drive the second gear 31 to rotate. When the second gear 31 rotates, it will simultaneously drive the second valve rod 32 to rotate and open the stop valve B inside the second air inlet pipe 30. After the stop valve B is opened, cold air will quickly enter the high-pressure sealed cabin 2. When the cold air enters the high-pressure sealed cabin 2, the heating of the high-pressure sealed cabin 2 will stop because the stop valve A is closed. Therefore, the temperature inside the high-pressure sealed cabin 2 will decrease rapidly when the cold air enters. After the temperature inside the high-pressure sealed cabin 2 decreases, the cold air will change the high-temperature and high-temperature humidity environment inside the high-pressure sealed cabin 2 into a low-temperature and low-temperature humidity environment, and the concrete plate will quickly switch between the two environments. When the cold air enters the high-pressure sealed cabin 2 and the temperature inside the high-pressure sealed cabin 2 decreases, the support rod 18 will reset when the slide 17 resets, and the pressure of the pressure seat 19 on the concrete plate will gradually increase. The pressure inside the high-pressure sealed cabin 2 can be controlled by controlling the pressure relief of the pressure relief pipe 7. The pressure inside the high-pressure sealed cabin 2 can be controlled by the pressure relief pipe 7. In a high-pressure environment, the transmission efficiency of cold and heat will be improved, so that the temperature will be transmitted to the concrete plate more quickly. In different pressure environments, the stress state of the auxiliary concrete plate in different pressure environments will be further detected.

[0029] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A concrete hardness testing device for concrete, comprising a high-pressure sealed chamber (2) installed on the upper end of a base (1), a door (3) installed on one side of the high-pressure sealed chamber (2), and a drain pipe (37) connected to one end of the high-pressure sealed chamber (2), characterized in that: The base (1) is internally centrally mounted with a support seat (4), and a plurality of through holes are formed on the surface of the support seat (4), a first pressing plate (11) is slidably arranged on the upper end of the support seat (4), one end of the first pressing plate (11) is connected with a second pressing plate (13), a sliding seat (17) is slidably arranged on the lower end of the second pressing plate (13), a support rod (18) is dampingly connected to the outer side of the sliding seat (17), the other end of the support rod (18) is dampingly connected with a pressing seat (19), and a pressure relief pipe (7) is mounted on the upper end of the high-pressure sealed cabin (2). A first air inlet pipeline (6) for conveying hot air flow is mounted on the upper end of the high-pressure sealed cabin (2), one end of the first air inlet pipeline (6) extends through the high-pressure sealed cabin (2) to the inside of the high-pressure sealed cabin (2), a stop valve A is arranged in the first air inlet pipeline (6), one end of the stop valve A is connected with a first gear (27), the outer side of the first gear (27) is engaged with a first rack (28), one side of the sliding seat (17) is fixedly connected with a fixed plate (20), the outer side of the fixed plate (20) is fixedly connected with a winding roller (23), and the output end of the winding roller (23) is connected with a magnetic block (25). A second air inlet pipeline (30) for conveying cold air is communicated with one side of the high-pressure sealed cabin (2), a stop valve B is mounted in the second air inlet pipeline (30), one end of the stop valve B is connected with a second gear (31), the outer side of the first air inlet pipeline (6) is communicated with a guide pipe (33), and one end of the guide pipe (33) is connected with a second rack (36).

2. The concrete hardness detection device for concrete according to claim 1, characterized by A cylinder (5) is mounted at the center of the upper end of the high-pressure sealed cabin (2), a top rod is connected to the output end of the cylinder (5), the top rod extends through the high-pressure sealed cabin (2) to the inside and is connected with the first pressing plate (11), one end of the first pressing plate (11) is fixedly connected with a plurality of spring As (12), and the other ends of the plurality of spring As (12) are connected with the second pressing plate (13).

3. The concrete hardness detection device for concrete according to claim 2, characterized by One side of the second pressing plate (13) is fixedly connected with a motor (14), a reciprocating screw rod (16) is connected to the output end of the motor (14), the reciprocating screw rod (16) is located at the lower end of the second pressing plate (13) and is rotatably connected with the second pressing plate (13), the reciprocating screw rod (16) is connected with the sliding seat (17) through a ball nut pair, and the first pressing plate (11), the second pressing plate (13) and the motor (14) are sleeved with a protective cover (15) on the outer side.

4. The concrete hardness detection device for concrete according to claim 1, characterized by The winding roller (23) winds a pull rope (24) inside, one side of the fixed plate (20) is fixedly connected with a guide plate (26), and the guide plate (26) is located on the same side of the fixed plate (20) as the winding roller (23).

5. The concrete hardness detection device for concrete according to claim 1, characterized by One end of the pull rope (24) penetrates through the guide plate (26) and is connected with the magnetic block (25), and the magnetic block (25) is attracted to the first rack (28).

6. The concrete hardness detection device for concrete according to claim 1, characterized by One end of the stop valve is fixedly connected with a first valve rod (29), the first valve rod (29) extends to the outside and is connected with a first gear (27), one end of the first air inlet pipe (6) is connected with a hot air equipment, one end of the first rack (28) extends to the outside through the high-pressure sealed cabin (2) and is connected with the high-pressure sealed cabin (2) in a damping mode, and a valve (10) is mounted in the pressure relief pipe (7), one end of the valve (10) is fixedly connected with a rotating shaft (9), and the other end of the rotating shaft (9) is connected with a rotating disc (8).

7. The concrete hardness detection device for concrete according to claim 1, characterized by One end of the stop valve B is fixedly connected with a second valve rod (32), the other end of the second valve rod (32) extends to the outside through a second air inlet pipe (30) and is connected with a second gear (31), and the other end of the second air inlet pipe (30) is connected with a cold air equipment.

8. The concrete hardness detection device for concrete according to claim 1, characterized by The first air inlet pipe (6) is fixedly connected with a connecting pipe (34) on the outside, the other end of the connecting pipe (34) extends to the outside through the high-pressure sealed cabin (2) and is connected with a guide pipe (33), and the guide pipe (33) is movably connected with a push rod (35) inside.

9. The concrete hardness detection device for concrete according to claim 8, characterized by One end of the push rod (35) located inside the guide pipe (33) is fixedly connected with a spring B (38), the other end of the spring B (38) is connected with the inner wall of the guide pipe (33), one end of the push rod (35) located outside the guide pipe (33) is connected with a second rack (36), the second rack (36) and the second gear (31) are located on the same plane, and the second rack (36) is engaged with the second gear (31).

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