Concrete durability testing device based on dual effects of low air pressure and freezing and thawing

Abstract

The invention discloses a concrete durability testing device based on dual effects of low pressure and freeze thawing, and belongs to the technical field of testing devices.The concrete durability testing device comprises a base, a testing cabin is arranged on the surface of one side of the base, fixing plates are fixedly connected to the two ends of the surface of one side in the testing cabin, and a rotating assembly is arranged on one side of each fixing plate; a bearing table is arranged between the fixing plates, and a clamping assembly is arranged on the bearing table. Through the rotating assembly, the first collecting box and the second collecting box, concrete blocks which are detected to be qualified and unqualified can be collected separately, the working efficiency is improved, and the requirements of workers are met. And through the clamping assembly, concrete blocks of different sizes can be clamped so as to facilitate detection of the tester, the application range is wide, and the practicability of the equipment is greatly improved. And through the cleaning assembly, dust and impurities attached to the display screen can be automatically cleaned at regular intervals, the definition of the display screen is improved, and labor force is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of testing devices, and particularly relates to a testing device for the durability of concrete under the dual action of low air pressure and freeze-thaw cycles. Background Art

[0002] In practical engineering applications, concrete structures are often faced with complex and changeable environmental conditions. Especially in cold regions at high altitudes, the combined action of low air pressure and frequent freeze-thaw cycles seriously affects the durability of concrete. Most traditional testing devices for concrete durability only target single factors, such as simple freeze-thaw tests or other performance tests under normal temperature and pressure, and cannot accurately simulate the harsh environment of the dual action of low air pressure and freeze-thaw under actual working conditions. As a result, there is a large deviation between the test results and the durability performance of concrete in actual engineering, making it difficult to effectively guide engineering practice.

[0003] In the prior art, there is an automated test device for testing the durability of concrete with the patent publication number CN116124821A. The above patent uses an automated device to test the durability of cement concrete, improving the automation level of the test process and test operation, and realizing functions of integration, automatic control, automatic adjustment, and automatic identification, thoroughly solving the problem that the prior art cannot complete multiple concrete durability tests integrally. However, there are still the following deficiencies in actual use: In practice, when using this device, it is impossible to stably clamp and detect concrete blocks of different sizes, resulting in great limitations in use. At the same time, when using this device, it is impossible to separately collect qualified and unqualified concrete blocks and automatically clean the dust and impurities adhering to the display screen regularly, reducing work efficiency and unable to ensure the clarity of the display screen, lacking practicality.

[0004] Therefore, there is a need for a testing device for the durability of concrete under the dual action of low air pressure and freeze-thaw cycles to solve the problems in the prior art, such as the inability to stably clamp and detect concrete blocks of different sizes, the inability to separately collect qualified and unqualified concrete blocks, and the inability to automatically clean the dust and impurities adhering to the display screen regularly. Summary of the Invention

[0005] The purpose of the present invention is to provide a testing device for the durability of concrete under the dual action of low air pressure and freeze-thaw cycles to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A concrete durability test device under the dual action of low air pressure and freeze-thaw cycles, including a base, on one side surface of the base is provided a test chamber, at both ends of one side surface inside the test chamber are fixedly connected with fixing plates, on one side of the fixing plates is provided a rotating assembly, between the fixing plates is provided a load-bearing platform, on the load-bearing platform is provided a clamping assembly, inside the test chamber are provided a first collection box and a second collection box, on one side surface of the base is fixedly connected with a support frame, on both side surfaces of the support frame are fixedly connected with connecting columns, on one end surface of the connecting column is fixedly connected with a display screen, and on one side of the display screen is provided a cleaning assembly.

[0007] It should be noted in the solution that on one side of the test chamber is provided a sealing door, on one side surface of the sealing door is fixedly connected with a handle, at one end of the test chamber is provided an electronic telescopic rod, and at the output end of the electronic telescopic rod is fixedly connected with a tester, and on both sides inside the test chamber are provided an air pressure controller and a freeze-thaw cycle device.

[0008] Furthermore, it is worth noting that the rotating assembly includes an installation groove, one side surface of the installation groove is fixedly connected with one side surface of the fixing plate, at one end surface of the installation groove is fixedly connected with a first installation frame, inside the first installation frame is fixedly connected with a first motor, inside the installation groove is rotatably connected with a first threaded rod, and at one end surface of the first threaded rod is fixedly connected with the output end of the first motor.

[0009] Even further, it should be noted that inside the installation groove is fixedly connected with a first sliding rod, the first sliding rod is slidably connected with a rack, and the rack is threadedly connected with the first threaded rod.

[0010] As a preferred implementation manner, on one side surface of the fixing plate is rotatably connected with a rotating shaft, at one end surface of the rotating shaft is fixedly connected with one end surface of the load-bearing platform, and at one end surface of the rotating shaft passing through the fixing plate is fixedly connected with a circular gear, and the circular gear meshes with the rack.

[0011] As a preferred implementation manner, on one side surface of the load-bearing platform is provided a groove, the clamping assembly includes a second installation frame and a second motor, one end surface of the second installation frame is fixedly connected with one side surface of the groove, the second installation frame is fixedly connected with the second motor, inside the load-bearing platform is rotatably connected with a bidirectional screw rod, at one end surface of the bidirectional screw rod is fixedly connected with the output end of the second motor, and on both sides inside the load-bearing platform are fixedly connected with second sliding rods.

[0012] As a preferred embodiment, both ends of one side surface of the load-bearing platform are provided with second sliding grooves, both ends of the second sliding grooves are slidably connected with moving plates, the moving plates are threadedly connected with the bidirectional screw rod, the moving plates are slidably connected with the second sliding rods, and one end surface of the moving plate is fixedly connected with a clamping plate.

[0013] As a preferred embodiment, the cleaning assembly includes a cleaning frame, one side of the cleaning frame is fixedly installed with one side of the display screen, one end surface of the cleaning frame is fixedly connected with a third mounting frame, a bidirectional motor is fixedly connected inside the third mounting frame, both sides of one end surface of the cleaning frame are fixedly connected with vertical plates, the output end of the bidirectional motor is fixedly connected with a rotating rod, the rotating rod is rotatably connected with the vertical plates, and one end surface of the rotating rod is fixedly connected with a first bevel gear.

[0014] As a preferred embodiment, both sides inside the cleaning frame are rotatably connected with second threaded rods, the second threaded rods penetrate through one end surface of the cleaning frame and are fixedly connected with second bevel gears, the second bevel gears are engaged with the first bevel gears, and the second threaded rods are threadedly connected with cleaning brushes.

[0015] As a preferred embodiment, both side surfaces inside the cleaning frame are provided with first sliding grooves, the first sliding grooves are slidably connected with sliding blocks, one end surface of the sliding blocks is fixedly connected with one end surface of the cleaning brushes, and one side surface inside the cleaning frame is provided with a notch.

[0016] Compared with the prior art, a concrete durability test device based on the dual effects of low air pressure and freeze-thaw provided by the present invention at least includes the following beneficial effects:

[0017] (1) Through the rotating assembly, the first collection box and the second collection box, the qualified and unqualified concrete blocks can be distinguished and collected, improving the work efficiency and meeting the needs of the staff.

[0018] (2) Through the clamping assembly, concrete blocks of different sizes can be clamped for easy detection by the tester, with a wide application range and greatly improving the practicability of the equipment.

[0019] (3) Through the cleaning assembly, the dust and impurities adhering to the display screen can be automatically cleaned regularly, improving the clarity of the display screen and reducing the labor force. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the interior of the test chamber of the present invention;

[0022] Figure 3 It is a schematic top view of the interior of the test chamber of the present invention;

[0023] Figure 4 It is a schematic top view of the rotating assembly of the present invention;

[0024] Figure 5 It is a schematic bottom view of the load-bearing platform of the present invention;

[0025] Figure 6 It is a schematic diagram of the cleaning assembly of the present invention.

[0026] In the figure: 100, base; 101, test chamber; 102, sealing door; 103, handle; 104, electronic telescopic rod; 105, tester; 106, air pressure controller; 107, freeze-thaw circulator; 108, first collection box; 109, second collection box; 200, fixed plate; 201, rotating shaft; 202, load-bearing platform; 203, groove; 204, circular gear; 205, support frame; 206, connecting column; 207, display screen; 300, rotating assembly; 301, installation groove; 302, first installation frame; 303, first motor; 304, first threaded rod; 305, first sliding rod; 306, rack; 307, first sliding groove; 308, sliding block; 309, notch; 400, clamping assembly; 401, second installation frame; 402, second motor; 403, bidirectional screw rod; 404, second sliding rod; 405, second sliding groove; 406, moving plate; 407, clamping plate; 500, cleaning assembly; 501, cleaning frame; 502, third installation frame; 503, bidirectional motor; 504, vertical plate; 505, rotating rod; 506, first bevel gear; 507, second bevel gear; 508, second threaded rod; 509, cleaning brush. Detailed implementation manners

[0027] The present invention will be further described below in conjunction with embodiments.

[0028] Please refer to Figures 1-6, the present invention provides a concrete durability testing device under the dual action of low air pressure and freeze-thaw cycles, including: a base 100, on one side surface of the base 100, there is a testing chamber 101. At both ends of one side surface inside the testing chamber 101, there are fixed connection plates 200. On one side of the fixed connection plates 200, there is a rotating assembly 300. Between the fixed connection plates 200, there is a load-bearing platform 202. On the load-bearing platform 202, there is a clamping assembly 400. Inside the testing chamber 101, there is a first collection box 108 and a second collection box 109. On one side surface of the base 100, there is a fixed connection support frame 205. On both side surfaces of the support frame 205, there are fixed connection columns 206. On one end surface of the connection column 206, there is a fixed connection display screen 207. On one side of the display screen 207, there is a cleaning assembly 500. The load-bearing platform 202 is used to place the concrete blocks to be tested. The first collection box 108 and the second collection box 109 can separately collect the qualified and unqualified concrete blocks after testing. The display screen 207 can be used to display the test data for the staff to refer to.

[0029] On one side of the testing chamber 101, there is a sealing door 102. On one side surface of the sealing door 102, there is a fixed connection handle 103. At one end of the testing chamber 101, there is an electronic telescopic rod 104. At the output end of the electronic telescopic rod 104, there is a fixed connection tester 105. On both sides inside the testing chamber 101, there are an air pressure controller 106 and a freeze-thaw cycle device 107. Through the handle 103, the sealing door 102 can be opened to put the concrete blocks to be tested into the testing chamber 101. Through the output end of the electronic telescopic rod 104, the tester 105 can be driven to approach the concrete blocks for testing. The air pressure controller 106 can simulate the low air pressure environment at different altitudes. The freeze-thaw cycle device 107 can achieve rapid and uniform temperature changes to perform efficient freeze-thaw treatment on the concrete specimens.

[0030] The rotating assembly 300 includes an installation groove 301. One side surface of the installation groove 301 is fixedly connected to one side surface of the fixed connection plate 200. One end surface of the installation groove 301 is fixedly connected to a first installation frame 302. Inside the first installation frame 302, there is a fixed connection first motor 303. Inside the installation groove 301, there is a rotatable connection first threaded rod 304. One end surface of the first threaded rod 304 is fixedly connected to the output end of the first motor 303. Turn on the switch of the first motor 303, and drive the first threaded rod 304 to rotate through the output end of the first motor 303.

[0031] A first sliding rod 305 is fixedly connected inside the installation groove 301. The first sliding rod 305 is slidably connected with a rack 306, and the rack 306 is threadedly connected with the first threaded rod 304. Rotating the first threaded rod 304 drives the rack 306 to move on the first sliding rod 305.

[0032] One side surface of the fixed plate 200 is rotatably connected with a rotating shaft 201. One end surface of the rotating shaft 201 is fixedly connected with one end surface of the load-bearing platform 202. The rotating shaft 201 penetrates through one end surface of the fixed plate 200 and is fixedly connected with a circular gear 204. The circular gear 204 meshes with the rack 306. The movement of the rack 306 drives the circular gear 204 to rotate, the rotation of the circular gear 204 drives the rotating shaft 201 to rotate, and the rotating shaft 201 drives the load-bearing platform 202 to rotate synchronously.

[0033] A groove 203 is formed on one side surface of the load-bearing platform 202. The clamping assembly 400 includes a second mounting frame 401 and a second motor 402. One end surface of the second mounting frame 401 is fixedly connected with one side surface of the groove 203. The second mounting frame 401 is fixedly connected with the second motor 402. A bidirectional screw 403 is rotatably connected inside the load-bearing platform 202. One end surface of the bidirectional screw 403 is fixedly connected with the output end of the second motor 402. Two second sliding rods 404 are fixedly connected to both sides inside the load-bearing platform 202. Turning on the switch of the second motor 402, the output end of the second motor 402 drives the bidirectional screw 403 to rotate.

[0034] Second sliding grooves 405 are formed at both ends of one side surface of the load-bearing platform 202. Two moving plates 406 are slidably connected to both ends of the second sliding grooves 405. The moving plates 406 are threadedly connected with the bidirectional screw 403. The moving plates 406 are slidably connected with the second sliding rods 404. One end surface of each moving plate 406 is fixedly connected with a clamping plate 407. The rotation of the bidirectional screw 403 drives the two moving plates 406 to approach or move away from each other on the second sliding rods 404, and the movement of the moving plates 406 drives the clamping plates 407 to move synchronously.

[0035] The cleaning component 500 includes a cleaning frame 501. One side of the cleaning frame 501 is fixedly installed with one side of the display screen 207. One end surface of the cleaning frame 501 is fixedly connected with a third mounting frame 502. A bidirectional motor 503 is fixedly connected inside the third mounting frame 502. Two sides of one end surface of the cleaning frame 501 are fixedly connected with vertical plates 504. The output end of the bidirectional motor 503 is fixedly connected with a rotating rod 505. The rotating rod 505 is rotatably connected with the vertical plates 504. One end surface of the rotating rod 505 is fixedly connected with a first bevel gear 506. Turn on the switch of the bidirectional motor 503. The output end of the bidirectional motor 503 drives the rotating rod 505 to rotate, and the first bevel gear 506 connected to the rotating rod 505 rotates.

[0036] Two sides inside the cleaning frame 501 are rotatably connected with a second threaded rod 508. The second threaded rod 508 penetrates through one end surface of the cleaning frame 501 and is fixedly connected with a second bevel gear 507. The second bevel gear 507 meshes with the first bevel gear 506. A cleaning brush 509 is threadedly connected to the second threaded rod 508. The rotation of the first bevel gear 506 drives the rotation of the second bevel gear 507. The second bevel gear 507 drives the second threaded rod 508 to rotate, and the second threaded rod 508 drives the cleaning brush 509 to move.

[0037] First sliding grooves 307 are formed on two side surfaces inside the cleaning frame 501. Sliding blocks 308 are slidably connected to the first sliding grooves 307. One end surface of the sliding block 308 is fixedly connected with one end surface of the cleaning brush 509. A notch 309 is formed on one side surface inside the cleaning frame 501. The cleaning brush 509 moves back and forth inside the first sliding grooves 307 through the sliding blocks 308. The dust and impurities swept by the cleaning brush 509 are removed through the notch 309.

[0038] According to the above working process, it can be known that when the staff needs to detect the concrete block, the staff first opens the sealing door 102 through the handle 103, then places the concrete block on the bearing platform 202 inside the test chamber 101, and then turns on the switch of the second motor 402. The output end of the second motor 402 drives the bidirectional screw 403 to rotate. The rotation of the bidirectional screw 403 drives the two moving plates 406 to approach each other on the second sliding rod 404. The moving plate 406 drives the clamping plate 407 to move synchronously to fix the concrete block. Then, the air pressure controller 106 and the freeze-thaw circulator 107 are controlled through the display screen 207 to set the inside of the test chamber 101 to the environment to be detected. Then, the output end of the electronic telescopic rod 104 drives the tester 105 to approach the concrete block for detection. The tester 105 transmits the detected data back to the display screen 207 for the staff to refer to. When an unqualified concrete block is detected, the staff turns on the switch of the first motor 303. The output end of the first motor 303 drives the first threaded rod 304 to rotate. The first threaded rod 304 drives the rack 306 to move on the first sliding rod 305. The movement of the rack 306 drives the circular gear 204 to rotate. The circular gear 204 drives the rotating shaft 201 to rotate. The rotating shaft 201 drives the bearing platform 202 to rotate synchronously, so as to pour the unqualified concrete block into the second collection box 109 for collection. On the contrary, the qualified ones are poured into the first collection box 108 for collection, meeting the needs of the staff and improving the work efficiency. When the display screen 207 is used for a long time, a large amount of dust and impurities will adhere to the surface, which will affect the display effect of the display screen 207. The staff turns on the switch of the bidirectional motor 503. The output end of the bidirectional motor 503 drives the rotating rod 505 to rotate. The rotating rod 505 drives the first bevel gear 506 to rotate. The first bevel gear 506 drives the second bevel gear 507 to rotate. The second bevel gear 507 drives the second threaded rod 508 to rotate. The second threaded rod 508 drives the cleaning brush 509 to move back and forth in the first sliding groove 307 through the sliding block 308, so as to clean the dust and impurities through the notch 309, ensuring the clarity of the display screen 207 and greatly improving the practicability of the equipment.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A durability test device for concrete under the dual action of low air pressure and freeze-thaw cycles, comprising a base (100), characterized in that: One side surface of the base (100) is provided with a test chamber (101). At both ends of one side surface inside the test chamber (101), fixing plates (200) are fixedly connected. On one side of the fixing plates (200), a rotating assembly (300) is provided. Between the fixing plates (200), a load-bearing platform (202) is provided. On the load-bearing platform (202), a clamping assembly (400) is provided. Inside the test chamber (101), a first collection box (108) and a second collection box (109) are provided. One side surface of the base (100) is fixedly connected with a support frame (205). On both side surfaces of the support frame (205), connecting columns (206) are fixedly connected. On one end surface of the connecting column (206), a display screen (207) is fixedly connected. On one side of the display screen (207), a cleaning assembly (500) is provided.

2. The concrete durability test device based on the dual effects of low air pressure and freeze-thaw according to claim 1, wherein: One side of the test chamber (101) is provided with a sealing door (102). On one side surface of the sealing door (102), a handle (103) is fixedly connected. One end of the test chamber (101) is provided with an electric telescopic rod (104). The output end of the electric telescopic rod (104) is fixedly connected with a tester (105). On both sides inside the test chamber (101), a pressure controller (106) and a freeze-thaw circulator (107) are provided.

3. A durability test device for concrete under the dual action of low air pressure and freeze-thaw, according to claim 1, characterized in that: The rotating assembly (300) includes an installation groove (301). One side surface of the installation groove (301) is fixedly connected with one side surface of the fixing plate (200). One end surface of the installation groove (301) is fixedly connected with a first installation frame (302). Inside the first installation frame (302), a first motor (303) is fixedly connected. Inside the installation groove (301), a first threaded rod (304) is rotatably connected. One end surface of the first threaded rod (304) is fixedly connected with the output end of the first motor (303).

4. A durability test device for concrete under the dual action of low air pressure and freeze-thaw, as described in claim 3, wherein: Inside the installation groove (301), a first sliding rod (305) is fixedly connected. The first sliding rod (305) is slidably connected with a rack (306). The rack (306) is threadedly connected with the first threaded rod (304).

5. A durability test device for concrete under the dual action of low air pressure and freeze-thaw cycles according to claim 1, characterized in that: One side surface of the fixing plate (200) is rotatably connected with a rotating shaft (201). One end surface of the rotating shaft (201) is fixedly connected with one end surface of the load-bearing platform (202). The rotating shaft (201) penetrates one end surface of the fixing plate (200) and is fixedly connected with a circular gear (204). The circular gear (204) meshes with the rack (306).

6. The durability test device for concrete under the dual action of low air pressure and freeze-thaw according to claim 1, characterized in that: One side surface of the load-bearing platform (202) is provided with a groove (203). The clamping assembly (400) includes a second mounting frame (401) and a second motor (402). One end surface of the second mounting frame (401) is fixedly connected to one side surface of the groove (203). The second mounting frame (401) is fixedly connected to the second motor (402). A bidirectional screw rod (403) is rotatably connected inside the load-bearing platform (202). One end surface of the bidirectional screw rod (403) is fixedly connected to the output end of the second motor (402). Two sides inside the load-bearing platform (202) are fixedly connected with second sliding rods (404).

7. A durability test device for concrete under the dual action of low air pressure and freeze-thaw cycles according to claim 6, characterized in that: Both ends of one side surface of the load-bearing platform (202) are provided with second sliding grooves (405). Two ends of the second sliding grooves (405) are slidably connected with moving plates (406). The moving plates (406) are threadedly connected to the bidirectional screw rod (403). The moving plates (406) are slidably connected to the second sliding rods (404). One end surface of the moving plates (406) is fixedly connected with clamping plates (407).

8. A durability test device for concrete under the dual action of low air pressure and freeze-thaw cycles according to claim 1, characterized in that: The cleaning assembly (500) includes a cleaning frame (501). One side of the cleaning frame (501) is fixedly installed with one side of the display screen (207). One end surface of the cleaning frame (501) is fixedly connected with a third mounting frame (502). A bidirectional motor (503) is fixedly connected inside the third mounting frame (502). Two sides of one end surface of the cleaning frame (501) are fixedly connected with vertical plates (504). The output end of the bidirectional motor (503) is fixedly connected with a rotating rod (505). The rotating rod (505) is rotatably connected to the vertical plates (504). One end surface of the rotating rod (505) is fixedly connected with a first bevel gear (506).

9. A durability test device for concrete under the dual action of low air pressure and freeze-thaw cycles according to claim 8, characterized in that: Two sides inside the cleaning frame (501) are rotatably connected with second threaded rods (508). The second threaded rods (508) penetrate through one end surface of the cleaning frame (501) and are fixedly connected with second bevel gears (507). The second bevel gears (507) are meshed with the first bevel gears (506). The second threaded rods (508) are threadedly connected with cleaning brushes (509).

10. A durability test device for concrete under the dual action of low air pressure and freeze-thaw cycles according to claim 9, characterized in that: First sliding grooves (307) are provided on two side surfaces inside the cleaning frame (501). The first sliding grooves (307) are slidably connected with sliding blocks (308). One end surface of the sliding blocks (308) is fixedly connected with one end surface of the cleaning brushes (509). A notch (309) is provided on one side surface inside the cleaning frame (501).

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