Environment variable self-regulation concrete structure simulation test platform

Abstract

The invention relates to the technical field of concrete detection, in particular to an environment variable self-regulation concrete structure simulation test platform which comprises a machine shell fixedly connected with a double-output-shaft motor connected with a cover shell and further comprises a variable regulation pressure applying structure connected with the machine shell. The sample fixing and detecting structure is installed on the machine shell and comprises a rotary clamping platform, and the rotary clamping platform is connected with a plurality of sets of waterproof wiring assemblies; and the split sealing structure is connected with the shell. The environment where the concrete sample block is located is controllably adjusted in the mode that the variable regulation and control pressure applying structure, the sample fixing and detecting structure and the split sealing-in structure are matched with one another, waterproof power connection is conducted on the strain gauges, salt spray corrosion, pressure applying tests and deformation measurement can be conducted on the concrete sample block only by installing the concrete sample block at a time, and the test efficiency is greatly improved. And the water seepage failure of the strain gauges is avoided, and the stability and the operation convenience during the test are improved.

Description

Technical Field

[0001] This invention relates to the field of concrete testing technology, specifically to a self-regulating environmental variable concrete structure simulation test platform. Background Technology

[0002] To ensure the performance of concrete, it is necessary to test its properties. These tests accelerate the degradation of concrete sample durability by increasing temperature, relative humidity, and concentration of corrosive media. Then, pressure is applied to the concrete sample to conduct a simulation test. During this process, strain gauges are attached to the surface of the concrete sample, and the strain gauges are electrically connected to measure deformation.

[0003] Ordinary simulation test platforms can only perform single performance tests on concrete samples and cannot perform pressure tests while simulating different environmental conditions. This is because high humidity environments can easily cause strain gauges to short-circuit, and the strain gauge wires can short-circuit due to water, resulting in unstable tests. Therefore, at least two test platforms are generally required to perform pressure tests and environmental simulations separately. When moving to a new test station, the platform needs to be repositioned. If the sample surface is uneven or has pores, additional equipment is required for repair processing, making the operation process quite cumbersome. Summary of the Invention

[0004] The purpose of this invention is to provide a self-regulating environmental variable concrete structure simulation test platform to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An environmental variable self-regulating concrete structure simulation test platform includes a housing, a control console fixedly connected to the housing, a dual-output shaft motor fixedly connected to the housing, a cover fixedly connected to the output shaft of the dual-output shaft motor, and the cover being movably connected to the housing. The platform also includes:

[0007] A variable-response pressure-applying structure connected to the housing, wherein the variable-response pressure-applying structure is connected to the cover;

[0008] A sample fixing and testing structure installed on the housing, the sample fixing and testing structure includes a rotating clamping platform connected to the housing, and multiple sets of water-proof wiring assemblies are installed on the rotating clamping platform, the water-proof wiring assemblies being electrically connected to the control console;

[0009] A split sealing structure connected to the housing includes a support base fixedly connected to the housing, a power socket fixedly installed inside the support base, an independent holding component movably connected to the power socket, a squeezing and scraping mechanism movably connected to the independent holding component, a first motor fixedly connected to the independent holding component, a grinding head fixedly connected to the output shaft of the first motor, and a drip recovery tank movably connected to the support base below the squeezing and scraping mechanism.

[0010] As a further improvement of the present invention: the variable-controlled pressure structure includes a salt spray generator fixedly connected to the housing, an atomizing humidifier fixedly connected to the housing, a temperature probe fixedly connected to the housing, a humidity probe fixedly connected to the housing, two sets of symmetrically arranged heating plates fixedly installed on the inner wall of the housing, a hydraulic cylinder fixedly connected to the housing, a pressure sensor fixedly connected to the moving end of the hydraulic cylinder, a first pair of connectors fixedly connected to the pressure sensor, a second pair of connectors connected to the first pair of connectors by multiple sets of bolts, and a pressure frame fixedly connected to the second pair of connectors.

[0011] As a further improvement of the present invention: the rotating clamping platform includes a base fixedly connected to the housing, a second motor fixedly connected to the base, a protective shell fixedly connected to the output shaft of the second motor, an annular support frame fixedly installed at the bottom of the protective shell, an annular support frame rotatably connected to an annular rail, the annular rail fixedly connected to the base, a guide frame fixedly installed inside the protective shell, a third motor fixedly installed inside the protective shell, a lead screw fixedly connected to the output shaft of the third motor, a cross linkage frame threadedly connected to the guide frame, four sets of hinge frames hinged to the cross linkage frame at equal angles along the circumference, a clamping frame hinged to the hinge frame and slidably connected to the protective shell, a water-blocking plate fixedly connected to the clamping frame and slidably connected to the protective shell, and a water-proof wiring assembly fixedly connected to the protective shell.

[0012] As a further improvement of the present invention: the protective shell is fixedly connected to a water guide cover, and a water collection tank is fixedly connected to the machine casing below the water guide cover, and a drain valve is fixedly connected to the water collection tank.

[0013] As a further improvement of the present invention: the waterproof wiring assembly includes a fixed base fixedly connected to the protective shell, an isolation block fixedly installed in the middle of the fixed base, two sets of conductive seats symmetrically arranged on both sides of the isolation block fixedly connected to the fixed base, conductive screws threadedly connected to the conductive seats, the conductive seats electrically connected to the control console, a waterproof cover rotatably connected to the fixed base, magnets fixedly installed in both the waterproof cover and the fixed base, the waterproof cover movably connected to the isolation block, and sealing strips fixedly connected to both the waterproof cover and the fixed base.

[0014] As a further improvement of the present invention: the independent gripping component includes a grip frame movably connected to the support base, the grip frame having an independent power supply inside, a control module fixedly connected to the grip frame, a push switch fixedly connected to the grip frame, the push switch being electrically connected to the extrusion scraping mechanism, the extrusion scraping mechanism being connected to the grip frame, an electronic control button fixedly connected to the grip frame, the electronic control button being electrically connected to a first motor, and the first motor being fixedly connected to the grip frame.

[0015] As a further improvement of the present invention: the extrusion scraping mechanism includes an electric telescopic rod fixedly connected to the grip, a sleeve fixedly connected to the electric telescopic rod, a clamping head fixedly connected to the grip, a ring movably connected to the clamping head, an injection syringe fixedly connected to the ring, a piston movably connected to the sleeve and slidingly connected to the injection syringe, two sets of clamping seats fixedly installed on the outer wall of the injection syringe, the two sets of clamping seats being movably connected to a set of elastic clamping members, and a scraper fixedly installed at the lower end of the injection syringe.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] In use, a concrete sample is placed on a rotating clamping platform, which then centers and clamps the sample. The operator fills the extrusion and scraping mechanism with the mixed epoxy resin to be applied. The operator then holds and moves the independent gripping component, separating it from the power socket. If the concrete sample surface is uneven, the first motor drives a grinding head to grind the surface of the sample to which the strain gauge will be bonded. If grinding is not required, the independent gripping component controls the extrusion and scraping mechanism to extrude the epoxy resin, allowing it to fall onto the surface of the sample. The extrusion and scraping mechanism then smooths the epoxy resin on the surface, filling any voids. The strain gauge is then attached to the epoxy resin layer. The extrusion and scraping mechanism is then used again to apply epoxy resin, forming an epoxy resin layer on the outside of the strain gauge. At this point, the strain gauge is covered by the epoxy resin. The strain gauges are sandwiched in the middle, and then the wires of the strain gauges are connected to a set of waterproof wiring components to complete the installation of a set of strain gauges. Then, the rotating clamping platform actively rotates the concrete sample block so that the other set of strain gauges to be installed on the concrete sample block faces the operator. After strain gauges are installed on all the test surfaces of the concrete sample block, the dual-shaft motor drives the cover to rotate, so that the cover rotates and abuts against the machine housing. At this time, the concrete sample block is in a closed space enclosed by the cover and the machine housing. Then, the rotating clamping platform releases the concrete sample block to provide space for the deformation of the concrete sample block. The variable control pressure structure adjusts the temperature, humidity and salt spray amount of the space in which the concrete sample block is located to control the salt spray corrosion of the concrete sample block under specific environmental conditions. Then, the variable control pressure structure applies pressure to the concrete sample block, and the strain gauges perform real-time measurement to measure the deformation of the concrete sample block. Afterwards, the external ventilation equipment performs air extraction to remove the corrosive salt spray and prevent personnel from being corroded by the salt spray. This invention utilizes a combination of variable-controlled pressure application structure, sample fixing and testing structure, and split sealing structure to controllably adjust the environment of the concrete sample block. This facilitates the use of epoxy resin to seal the strain gauges in a watertight manner and adhere them to the surface of the concrete sample block to be tested. Subsequently, the deformation of the compressed concrete sample block can be measured. This invention requires only one installation of the concrete sample block to perform salt spray corrosion tests, pressure tests, and deformation measurements, while avoiding strain gauge failure due to water seepage. This improves the stability and ease of operation of the invention during testing. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the present invention.

[0020] Figure 3 This is the front view of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the rotating clamping platform and the water-proof wiring assembly of the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the waterproof wiring assembly of the present invention when unfolded.

[0023] Figure 6 This is a three-dimensional structural diagram of the split sealing structure of the present invention.

[0024] Figure 7 This is a schematic diagram of the split sealing structure of the present invention.

[0025] Figure 8 For the present invention Figure 6 A magnified view of part A in the diagram.

[0026] In the diagram: 1. Housing; 2. Control console; 3. Dual-shaft motor; 4. Cover; 5. Variable displacement pressure application structure; 6. Sample fixing and testing structure; 7. Rotary clamping platform; 8. Waterproof wiring assembly; 9. Split sealing structure; 10. Support base; 11. Power socket; 12. Independent holding assembly; 13. Extrusion scraping mechanism; 14. First motor; 15. Grinding head; 16. Drip recovery tank; 17. Salt spray generator; 18. Atomizing humidifier; 19. Temperature probe; 20. Humidity probe; 21. Heating plate; 22. Hydraulic cylinder; 23. Pressure sensor; 24. First connector; 25. Bolt; 26. Second connector; 27. Pressure frame; 28. Base; 29. ​​Second motor; 30. Protective shell; 31. Ring. 32. Support frame; 33. Ring rail; 34. Guide frame; 35. Third motor; 36. Lead screw; 37. Cross linkage frame; 38. Hinge frame; 39. Clamping frame; 40. Water blocking plate; 41. Water guide cover; 42. Water collection tank; 43. Drain valve; 44. Fixed base; 45. Isolation block; 46. Conductive base; 47. Handle; 48. Independent power supply; 49. Push switch; 50. Electric control button; 51. Electric telescopic rod; 52. Sleeve head; 53. Snap connector; 54. Ring body; 55. Injection syringe; 56. Scraper; 57. Piston; 58. Snap seat; 59. Elastic clamping component; 60. Conductive screw; 61. Control module; 62. Air exchange valve; 63. Servo hydraulic station; 64. Waterproof cover; 65. Magnet; 66. Sealing strip. Detailed Implementation

[0027] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0028] Example 1, see Figures 1 to 8As shown, an environmental variable self-regulating concrete structure simulation test platform includes a housing 1, a control console 2 fixedly connected to the housing 1, a dual-output shaft motor 3 fixedly connected to the housing 1, a cover 4 fixedly connected to the output shaft of the dual-output shaft motor 3, the cover 4 being movably connected to the housing 1, a ventilation valve 61 fixedly installed on the top of the housing 1, the ventilation valve 61 being connected to an external ventilation device, and further includes:

[0029] A variable pressure regulating structure 5 is connected to the housing 1, and the variable pressure regulating structure 5 is connected to the cover 4;

[0030] The sample fixing and detection structure 6 is installed on the housing 1. The sample fixing and detection structure 6 includes a rotating clamping platform 7 connected to the housing 1. Multiple sets of water-proof wiring assemblies 8 are installed on the rotating clamping platform 7. The water-proof wiring assemblies 8 are electrically connected to the control console 2.

[0031] A split sealing structure 9 is connected to the housing 1. The split sealing structure 9 includes a support base 10 fixedly connected to the housing 1. A power socket 11 is fixedly installed inside the support base 10. An independent holding component 12 is movably connected to the power socket 11. An extrusion scraping mechanism 13 is movably connected to the independent holding component 12. A first motor 14 is fixedly connected to the independent holding component 12. A grinding head 15 is fixedly connected to the output shaft of the first motor 14. A drip recovery tank 16 is movably connected to the support base 10 and is located below the extrusion scraping mechanism 13.

[0032] In use, the concrete sample is placed on the rotating clamping platform 7, which then centers and clamps the sample. Next, the operator fills the extrusion and scraping mechanism 13 with the mixed epoxy resin to be applied. The operator then holds and moves the independent holding component 12, separating it from the power socket 11. If the concrete sample surface is uneven, the first motor 14 drives the grinding head 15 to rotate, allowing the grinding head 15 to grind the surface of the concrete sample to which the strain gauge will be bonded. If grinding is not required, the independent gripping component 12 controls the extrusion scraping mechanism 13 to extrude the epoxy resin, causing it to fall onto the surface of the concrete sample to be bonded with the strain gauge. The extrusion scraping mechanism 13 then scrapes and flattens the epoxy resin applied to the concrete sample surface, filling any voids. The strain gauge is then attached to the epoxy resin layer. The extrusion scraping mechanism 13 is then used again to apply epoxy resin, forming an epoxy resin layer on the outside of the strain gauge. At this point, [further steps should be taken]. The strain gauge is sandwiched in the middle by an epoxy resin layer. Then, the strain gauge wires are connected to a set of waterproof wiring components 8 to complete the installation of one set of strain gauges. Then, the rotating clamping platform 7 actively rotates the concrete sample block so that the other set of strain gauges to be installed on the concrete sample block faces the operator. After strain gauges are installed on all the test surfaces of the concrete sample block, the dual-shaft motor 3 drives the housing 4 to rotate, causing the housing 4 to rotate and abut against the machine housing 1. At this time, the concrete sample block is in a closed space jointly enclosed by the housing 4 and the machine housing 1. The rear rotating clamping platform 7 releases the concrete sample block to provide space for deformation. The variable-control pressure application structure 5 regulates the temperature, humidity, and salt spray level of the space where the concrete sample block is located to control salt spray corrosion under specific environmental conditions. Then, the variable-control pressure application structure 5 applies pressure to the concrete sample block, and strain gauges perform real-time measurements to measure the deformation. Afterwards, an external ventilation device performs an extraction operation to remove the corrosive salt spray and prevent personnel from being corroded by the salt spray. This invention uses the variable-control pressure application structure 5, the sample fixing and testing structure 6, and the split sealing structure 9 in a coordinated manner to controllably regulate the environment of the concrete sample block. This facilitates the use of epoxy resin to seal the strain gauges in a watertight manner and adhere them to the surface of the concrete sample block to be tested. The deformation of the compressed concrete sample block is then measured. This invention requires only one installation of the concrete sample block to perform salt spray corrosion tests, pressure tests, and deformation measurements, while avoiding strain gauge failure due to water seepage, thus improving the stability and ease of operation during testing.

[0033] In one embodiment, the variable-controlled pressure structure 5 includes a salt spray generator 17 fixedly connected to the housing 1, an atomizing humidifier 18 fixedly connected to the housing 1, a temperature probe 19 fixedly connected to the housing 1, and a humidity probe 20 fixedly connected to the housing 1. Both the temperature probe 19 and the humidity probe 20 are communicatively connected to the control console 2. Two sets of symmetrically arranged heating plates 21 are fixedly installed on the inner wall of the cover 4. A hydraulic cylinder 22 is fixedly connected to the housing 1. The hydraulic cylinder 22 is connected to a servo hydraulic station 62, which provides hydraulic oil to the hydraulic cylinder 22. A pressure sensor 23 is fixedly connected to the moving end of the hydraulic cylinder 22. The pressure sensor 23 is fixedly connected to a first connector 24. The first connector 24 is connected to a second connector 26 by multiple sets of bolts 25. The second connector 26 is fixedly connected to a pressure frame 27. Water and a corrosive salt solution are added to the atomizing humidifier 18 and the salt spray generator 17, respectively. The atomizing humidifier 18 and the salt spray generator 17 then spray water mist and salt mist onto the concrete sample block, respectively. The heating plate 21 generates heat, and the humidity probe 20 and the temperature probe 19 measure the temperature and humidity data. The measured data are then transmitted to the control console 2. The control console 2 adjusts the atomizing humidifier 18, the salt spray generator 17, and the heating plate 21 according to the measured temperature and humidity to ensure that the concrete sample block is in a stable and preset environment. This simulates the corrosion of concrete samples under different environments and can provide reference and data guidance for the study of the durability erosion mechanism, process, and results of concrete in actual environments.

[0034] In one embodiment, the rotating clamping platform 7 includes a base 28 fixedly connected to the housing 1. A second motor 29 is fixedly connected to the base 28. The surface of the second motor 29 is coated with an anti-corrosion coating. A protective shell 30 is fixedly connected to the output shaft of the second motor 29. An annular support frame 31 is fixedly installed at the bottom of the protective shell 30. An annular support frame 31 is rotatably connected to an annular rail 32. The annular rail 32 is fixedly connected to the base 28. A guide frame 33 is fixedly installed inside the protective shell 30. A second... The third motor 34 has a lead screw 35 fixedly connected to its output shaft. The lead screw 35 is threadedly connected to a cross linkage frame 36 that is slidably connected to a guide frame 33. The cross linkage frame 36 is hinged to four sets of hinge frames 37 arranged at equal angles along the circumference. The hinge frames 37 are hinged to a clamping frame 38 that is slidably connected to a protective shell 30. The protective shell 30 has an opening that provides space for the clamping frame 38 to move. The clamping frame 38 is fixedly connected to a water-blocking plate 39 that is slidably connected to the protective shell 30. The water-proof wiring assembly 8 is fixedly connected to the protective shell 30. The third motor 34 drives the lead screw 35 to rotate, and the rotating lead screw 35 drives the cross linkage frame 36 to move along the guide frame 33. The moving cross linkage frame 36 drives each set of hinge frames 37 to move simultaneously, and the moving hinge frames 37 drive the clamping frame 38 to move, so as to adjust the position of the clamping frame 38. The four sets of clamping frames 38 clamp the concrete sample block simultaneously to complete the centering clamping operation. Under the drive of the second motor 29, the protective shell 30 rotates, and the rotating protective shell 30 drives the clamping frame 38 to rotate, so that the concrete sample block placed on the protective shell 30 and clamped by the clamping frame 38 rotates. The water blocking plate 39 is used to prevent salt spray and water spray from entering the protective shell 30 through the opening on the protective shell 30.

[0035] In one embodiment, the protective shell 30 is fixedly connected to a water guide cover 40, and a water collection tank 41 is fixedly connected to the housing 1 below the water guide cover 40. A drain valve 42 is fixedly connected to the water collection tank 41. The water guide cover 40 is used to guide the water mist to the water collection tank 41, facilitating subsequent sewage collection and treatment operations.

[0036] In one embodiment, the waterproof wiring assembly 8 includes a fixed base 43 fixedly connected to the protective shell 30. An isolation block 44 is fixedly installed in the middle of the fixed base 43. Two sets of conductive seats 45 symmetrically arranged on both sides of the isolation block 44 are fixedly connected to the fixed base 43. The conductive seats 45 are electrically connected to the control console 2. The conductive seats 45 are threaded with conductive screws 59. The conductive seats 45 are electrically connected to the control console 2. A waterproof cover 63 is rotatably connected to the fixed base 43. Magnets 64 are fixedly installed in both the waterproof cover 63 and the fixed base 43. The waterproof cover 63 is movably connected to the isolation block 44. Sealing strips 65 are fixedly connected to both the waterproof cover 63 and the fixed base 43. The exposed end of the strain gauge wire is placed between the conductive base 45 and the conductive screw 59. Then, the conductive screw 59 is rotated to lock the exposed end of the wire, thereby making the control console 2 electrically connected to the strain gauge. Then, the waterproof cover 63 is rotated so that the two sets of magnets 64 attract each other. At this time, the waterproof cover 63 abuts against the fixed base 43, and the sealing strip 65 abuts against the wire to perform waterproof wiring work. The isolation block 44 is used to prevent the two sets of conductive bases 45 from short-circuiting due to water flow.

[0037] In one embodiment, the independent gripping assembly 12 includes a grip frame 46 movably connected to the support base 10. An independent power supply 47 is disposed inside the grip frame 46. A control module 60 is fixedly connected to the grip frame 46. A push-type switch 48 is fixedly connected to the grip frame 46 and electrically connected to the extrusion scraping mechanism 13. The extrusion scraping mechanism 13 is connected to the grip frame 46. An electronic control button 49 is fixedly connected to the grip frame 46 and electrically connected to a first motor 14. The first motor 14 is fixedly connected to the grip frame 46. The push-type switch 48 is used to regulate the extrusion scraping mechanism 13, the electronic control button 49 is used to regulate the start and stop of the first motor 14, and the independent power supply 47 is used to supply power to the first motor 14 and the extrusion scraping mechanism 13.

[0038] Example 2, based on Example 1, see [link / reference] Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 8The extrusion and scraping mechanism 13 includes an electric telescopic rod 50 fixedly connected to the grip 46. The electric telescopic rod 50 is electrically connected to a push switch 48. The electric telescopic rod 50 is fixedly connected to a sleeve 51. The grip 46 is fixedly connected to a clamping connector 52. The clamping connector 52 is movably connected to a ring 53. The ring 53 is fixedly connected to an injection syringe 54. The injection syringe 54 is slidably connected to a piston 56 movably connected to the sleeve 51. Two sets of clamping seats 57 are fixedly installed on the outer wall of the injection syringe 54. The two sets of clamping seats 57 are movably connected to a set of elastic clamping members 58. A scraper 55 is fixedly installed at the lower end of the injection syringe 54. The piston 56 is separated from the injection syringe 54 to allow the mixed epoxy resin to be filled into the injection syringe 54. Then, the piston 56 and the injection syringe 54 are assembled. After that, two sets of clamping seats 57 are engaged with the elastic clamping parts 58, the sleeve head 51 is engaged with the piston 56, and the clamping head 52 is engaged with the ring body 53. Then, the electric telescopic rod 50 drives the sleeve head 51 to move, so that the piston 56 moves and squeezes the epoxy resin, thereby forcing the epoxy resin out of the injection syringe 54. By moving the grip 46, the moving scraper 55 can be used to smooth the epoxy resin. By changing the injection syringe 54 and the piston 56, the epoxy resin can be prevented from solidifying and causing the injection syringe 54 and the piston 56 to be unable to move, thereby maintaining the normal operation of the extrusion scraping mechanism 13.

[0039] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A self-regulating environmental variable concrete structure simulation test platform, comprising a housing, a control console fixedly connected to the housing, a dual-output shaft motor fixedly connected to the housing, a cover fixedly connected to the output shaft of the dual-output shaft motor, and the cover being movably connected to the housing, characterized in that, Also includes: A variable-response pressure-applying structure connected to the housing, wherein the variable-response pressure-applying structure is connected to the cover; A sample fixing and testing structure installed on the housing, the sample fixing and testing structure includes a rotating clamping platform connected to the housing, and multiple sets of water-proof wiring assemblies are installed on the rotating clamping platform, the water-proof wiring assemblies being electrically connected to the control console; A split sealing structure connected to the housing includes a support base fixedly connected to the housing, a power socket fixedly installed inside the support base, an independent holding component movably connected to the power socket, a squeezing and scraping mechanism movably connected to the independent holding component, a first motor fixedly connected to the independent holding component, a grinding head fixedly connected to the output shaft of the first motor, and a drip recovery tank movably connected to the support base below the squeezing and scraping mechanism.

2. The environmental variable self-regulating concrete structure simulation test platform according to claim 1, characterized in that, The variable-regulation pressure structure includes a salt spray generator fixedly connected to the housing, an atomizing humidifier fixedly connected to the housing, a temperature probe fixedly connected to the housing, a humidity probe fixedly connected to the housing, two sets of symmetrically arranged heating plates fixedly installed on the inner wall of the housing, a hydraulic cylinder fixedly connected to the housing, a pressure sensor fixedly connected to the moving end of the hydraulic cylinder, a first pair of connectors fixedly connected to the pressure sensor, a second pair of connectors connected to the first pair of connectors by multiple sets of bolts, and a pressure frame fixedly connected to the second pair of connectors.

3. The environmental variable self-regulating concrete structure simulation test platform according to claim 1, characterized in that, The rotating clamping platform includes a base fixedly connected to the housing, a second motor fixedly connected to the base, a protective shell fixedly connected to the output shaft of the second motor, an annular support frame fixedly installed at the bottom of the protective shell, an annular support frame rotatably connected to an annular rail, the annular rail fixedly connected to the base, a guide frame fixedly installed inside the protective shell, a third motor fixedly installed inside the protective shell, a lead screw fixedly connected to the output shaft of the third motor, a cross linkage frame threadedly connected to the guide frame, four sets of hinge frames hinged to the cross linkage frame at equal angles along the circumference, a clamping frame hinged to the hinge frame and slidably connected to the protective shell, a water-blocking plate fixedly connected to the clamping frame and slidably connected to the protective shell, and a water-proof wiring assembly fixedly connected to the protective shell.

4. The environmental variable self-regulating concrete structure simulation test platform according to claim 3, characterized in that, The protective shell is fixedly connected to a water guide cover, and a water collection tank is fixedly connected to the machine casing below the water guide cover. A drain valve is fixedly connected to the water collection tank.

5. The environmental variable self-regulating concrete structure simulation test platform according to claim 3, characterized in that, The waterproof wiring assembly includes a fixed base fixedly connected to the protective shell, an isolation block fixedly installed in the middle of the fixed base, two sets of conductive seats symmetrically arranged on both sides of the isolation block fixedly connected to the fixed base, conductive screws threadedly connected to the conductive seats, the conductive seats electrically connected to the control console, a waterproof cover rotatably connected to the fixed base, magnets fixedly installed inside both the waterproof cover and the fixed base, the waterproof cover movably connected to the isolation block, and sealing strips fixedly connected to both the waterproof cover and the fixed base.

6. The environmental variable self-regulating concrete structure simulation test platform according to claim 1, characterized in that, The independent gripping assembly includes a grip frame movably connected to a support base. The grip frame has an independent power supply inside. The grip frame is fixedly connected to a control module and a push switch. The push switch is electrically connected to an extrusion and scraping mechanism. The extrusion and scraping mechanism is connected to the grip frame. The grip frame is fixedly connected to an electric control button. The electric control button is electrically connected to a first motor. The first motor is fixedly connected to the grip frame.

7. The environmental variable self-regulating concrete structure simulation test platform according to claim 6, characterized in that, The extrusion and scraping mechanism includes an electric telescopic rod fixedly connected to a gripper, a sleeve fixedly connected to the electric telescopic rod, a clamping connector fixedly connected to the gripper, a ring movably connected to the clamping connector, an injection syringe fixedly connected to the ring, a piston movably connected to the sleeve slidably connected to the injection syringe, two sets of clamping seats fixedly installed on the outer wall of the injection syringe, the two sets of clamping seats being movably connected to a set of elastic clamping members, and a scraper fixedly installed at the lower end of the injection syringe.

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