Underwater pouring site concrete condensation state detection device

Abstract

The invention discloses an underwater pouring site concrete condensation state detection device, and relates to the technical field of concrete pouring quality detection. Comprising a mounting plate, a movable adjusting assembly is mounted in the mounting plate, baffles are mounted at the two ends of the rear side of the mounting plate through the movable adjusting assembly, adjusting fixing mechanisms are mounted at the four corners of the rear side of each baffle through connecting rods, and a sealed sampling mechanism is mounted in the middle of the rear side of the mounting plate through a connecting rod; a pushing assembly is mounted on the rear side of the mounting plate and used for adjusting the position of the adjusting block. The concrete condensation state detection device for the underwater pouring site can be adjusted according to underwater buildings with different diameters, the mounting plate is fixed, divers can drill and sample the surfaces of the buildings conveniently, water can be prevented from entering, a concrete sample core is prevented from being in contact with the water, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete pouring quality detection, and specifically provides a device for detecting the setting state of underwater poured concrete on site. Background Art

[0002] When pouring underwater concrete structures, it is necessary to detect the setting state of the concrete to determine the demoulding time. Especially for underwater construction projects such as bridges, docks, and submarine tunnels, it is necessary to detect the setting state of the concrete in the underwater area to ensure timely demoulding for subsequent construction and ensure construction quality.

[0003] The existing method for sampling when detecting the setting state of underwater concrete on site is that first, professional divers dive into the water, and then an underwater drill is used in cooperation with a positioning mechanism to drill holes on the surface of the pier column to take out concrete core samples. However, when the existing device for detecting the setting state of underwater poured concrete on site samples underwater concrete, it is not convenient to perform stable positioning drilling in areas with different specifications of pier columns. Since the diameters and shapes of different pier column pourings are different, the positioning areas and contact surfaces are different, lacking adaptive means, and it is easy for operators to make deviations. At the same time, since drilling and sampling are carried out underwater, the concrete core samples will come into contact with water during the sampling process, which is likely to cause the test results to be inconsistent with the actual setting state, making it difficult to accurately judge the subsequent construction time.

[0004] In view of the above problems, there is an urgent need to innovate and design on the basis of the original device for detecting the setting state of underwater poured concrete on site. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for detecting the setting state of underwater poured concrete on site to solve the problems in the above background art that it is not convenient to perform stable positioning drilling in areas with different specifications of pier columns and at the same time cannot avoid the contact between the obtained concrete core samples and water.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A device for detecting the setting state of underwater poured concrete on site, which includes a mounting plate. A moving and adjusting component is installed inside the mounting plate. Baffles are installed at both ends of the rear side of the mounting plate through the moving and adjusting component. Adjusting and fixing mechanisms are installed at the four corners of the rear side of the baffle through connecting rods. A sealed sampling mechanism is installed at the middle position of the rear side of the mounting plate through a connecting rod. The adjustment and fixing mechanism includes a device block, which is fixedly installed on the rear side of the baffle through a connecting rod. An adjustment block is installed in the middle cavity of the device block in a limited way through a sliding block. A sealing cylinder is installed inside the adjustment block through a rotating rod. One end of the rotating rod passing through the bottom of the adjustment block is sleeved with a gear A. One side of the gear A is meshed with a rack A, and the rack A is fixed on the inner wall of the device block. A rubber suction cup is fixedly connected to the rear side of the sealing cylinder. A pushing component is installed on the rear side of the mounting plate, and the pushing component is used to adjust the position of the adjustment block.

[0007] Preferably, the moving and adjusting component includes a driving bevel gear, which is installed inside the mounting plate through a waterproof motor. The two sides of the tooth surface of the driving bevel gear are meshed and connected with driven bevel gears. A lead screw is fixedly installed on one side of the driven bevel gear. A moving mounting block is sleeved on the lead screw in a threaded manner, and the moving mounting block is limited and slides in a sliding groove opened on the rear side of the mounting plate.

[0008] Preferably, the pushing component includes a push rod, which is fixedly installed at one end of the front side of the adjustment block. The front end of the push rod abuts against an inclined slider, and the inclined slider is fixed on the rear side of the mounting plate. The inclined slider and the sliding groove are arranged in a dislocation manner, and the inclined slider is used to push the push rod to move longitudinally.

[0009] Preferably, the sealing and sampling mechanism includes a contact cylinder, which is fixed at the middle position of the rear side of the mounting plate through a connecting rod. A driving gear is installed inside the contact cylinder through a driving motor. A driven gear is meshed and connected with the driving gear at the middle position inside the contact cylinder. Arc-shaped through grooves are opened at the upper and lower ends of the driven gear. A sealing plate is installed in the arc-shaped through grooves through sliding rods. A drainage component is installed at the bottom end of the rear side of the sealing plate. A rubber gasket is installed on the rear side of the contact cylinder in a limited way through a sliding ring. When the arc-shaped through grooves rotate following the driven gear, the sealing plate is driven to move vertically through the sliding rods.

[0010] Preferably, the drainage component includes a drainage cylinder, which is installed at the rear side of the sealing plate through a fixing rod. A piston is slidably installed inside the drainage cylinder. A threaded rod is installed at the bottom of the piston. The outer periphery of the part of the threaded rod extending out of the drainage cylinder is threadedly connected with a gear B, and the gear B is installed at the outer end of the drainage cylinder through a bearing. A through groove body is opened at the lower end of the sliding ring, and a rack B is fixedly connected to the inner side wall of the through groove body. The rack B is meshed and connected with the gear B.

[0011] Preferably, a vacuum pump is installed on the top of the device block, and the vacuum pump is connected to the front side of the sealing cylinder through a hose.

[0012] Preferably, a sampling drill bit is installed on the front side of the mounting plate, and the rear side of the sampling drill bit extends through the mounting plate to the inside of the abutment cylinder, and an electric drill is detachably installed on the front side of the sampling drill bit through a connecting port.

[0013] Preferably, a plurality of rows of water inlet holes are circumferentially opened on the side wall at the top end of the drainage cylinder, and each row of water inlet holes is vertically evenly distributed. A receiving groove is provided at the lower end of the inner part of the resistance cylinder corresponding to the drainage cylinder, and the drainage cylinder slides in the receiving groove as the sealing plate moves.

[0014] Preferably, the middle parts of the abutment cylinder, the driven gear, the sliding ring and the rubber gasket are all provided with a cavity for the sampling drill bit to penetrate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with a device block, a sliding block, an adjusting block, a rotating rod, a sealing cylinder, a gear A, a rack A, a rubber suction cup, a pushing component and a movable adjusting component. The movable adjusting component can adjust the position of the device block according to the size of the diameter of the sampling building. At the same time, the pushing component will push the adjusting block to move toward the rear end, so that the gear A rotates on the rack A, driving the sealing cylinder to rotate, to adjust the angle of the rubber suction cup, so that the rubber suction cup can fit the surface of the sampling pier column, cooperate with the vacuum pump to realize the fixation of the mounting plate, and facilitate the diver to drill and sample the surface of the pier column. At the same time, it can also be adjusted according to the diameter of different pier columns to ensure the stability of the drilling direction during fixation and improve the stability and accuracy of the drilling.

[0016] 2. The present invention is provided with a resistance cylinder, a driving gear, a driven gear, an arc-shaped through groove, a sealing plate, a sliding ring, a rubber gasket and a drainage component. The rubber gasket on the rear side of the resistance cylinder is used to resist the sampling building surface, so that the internal space of the resistance cylinder is in a sealed state, and at the same time, the drainage component is cooperated to discharge the water in the internal chamber of the resistance cylinder. Then, the driven gear is driven to rotate by the driving gear, and the sliding rod is cooperated to slide in the arc-shaped through groove to open the sealing plate to both sides. Finally, sampling is carried out through the sampling drill bit. After the sampling is completed, the sampling drill bit is retracted into the resistance cylinder, and the sealing plate is closed to prevent water from entering, which effectively avoids the contact between the obtained concrete sample core and water, improves the accuracy of the detection result, and ensures that the next construction time can be accurately judged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the rear side of the mounting plate in the present invention; Figure 3 It is a structural schematic diagram of the mobile adjustment component in the present invention; Figure 4 It is a structural schematic diagram of the adjusting and fixing mechanism in the present invention; Figure 5 It is a top - view structural schematic diagram of the adjustment and fixation mechanism in the present invention; Figure 6 It is a partial front - view structural schematic diagram of the adjustment and fixation mechanism in the present invention; Figure 7 It is a structural schematic diagram of some parts of the adjustment and fixation mechanism in the present invention; Figure 8 It is a sectional schematic diagram of the sealed sampling mechanism in the present invention; Figure 9 It is a structural schematic diagram of some parts of the sealed sampling mechanism in the present invention; Figure 10 It is a partial enlarged schematic diagram of Structure A of the present invention; Figure 11 It is a top - view of the internal structure of the through - groove body in the present invention.

[0018] In the figure: 1. mounting plate; 21. driving bevel gear; 22. driven bevel gear; 23. lead screw; 24. moving mounting block; 25. sliding groove; 31. device block; 32. sliding block; 33. adjusting block; 34. rotating rod; 35. sealing cylinder; 36. gear A; 37. rack A; 38. rubber suction cup; 391. push rod; 392. inclined slider; 4. baffle; 51. abutting cylinder; 52. driving gear; 53. driven gear; 54. arc - shaped through - groove; 55. sealing plate; 561. drainage cylinder; 562. fixing rod; 563. piston; 564. threaded rod; 565. gear B; 566. through - groove body; 567. rack B; 57. sliding ring; 58. rubber washer; 6. vacuum pump; 7. sampling drill bit; 8. electric drill; 9. water inlet hole; 10. accommodating groove. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0020] Please refer to Figures 1 - 11 , the embodiments of the present invention provide an underwater - pouring - site concrete setting - state detection device, including a mounting plate 1. A moving - adjustment assembly is installed inside the mounting plate 1. Baffles 4 are installed at both ends of the rear side of the mounting plate 1 through the moving - adjustment assembly. Adjusting and fixing mechanisms are installed at the four corners at the rear side of the baffle 4 through connecting rods. A sealed sampling mechanism is installed at the middle position of the rear side of the mounting plate 1 through a connecting rod; The adjusting and fixing mechanism includes a device block 31. The device block 31 is fixedly installed on the rear side of the baffle 4 through a connecting rod. Inside the middle cavity of the device block 31, an adjusting block 33 is installed with limited position through a sliding block 32. Inside the adjusting block 33, a sealing cylinder 35 is installed through a rotating rod 34. One end of the rotating rod 34 passing through the bottom of the adjusting block 33 is sleeved with a gear A 36. One side of the gear A 36 is meshed with a rack A 37. The rack A 37 is fixed on the inner wall of the device block 31. A rubber suction cup 38 is fixedly connected to the rear side of the sealing cylinder 35. A pushing component is installed on the rear side of the mounting plate 1. The pushing component is used to adjust the position of the adjusting block 33. A vacuum pump 6 is installed on the top of the device block 31. The vacuum pump 6 is connected to the front side of the sealing cylinder 35 through a hose. By pushing the adjusting block 33 to move through the pushing component, the gear A 36 can be driven to rotate on the rack A 37, so that the angle of the sealing cylinder 35 can be changed and it can fit on the surface of the underwater building. Then, the air in the sealing cylinder 35 is sucked out through the vacuum pump 6, so that the rubber suction cup 38 is fixed on the surface of the underwater building.

[0021] The moving and adjusting component includes a driving bevel gear 21. The driving bevel gear 21 is installed inside the mounting plate 1 through a waterproof motor. The two sides of the tooth surface of the driving bevel gear 21 are meshed and connected with driven bevel gears 22. One side of each driven bevel gear 22 is fixedly installed with a lead screw 23. A moving mounting block 24 is sleeved on the lead screw 23 in a threaded manner. The moving mounting block 24 is limited to slide in a sliding groove 25 opened on the rear side of the mounting plate 1. The waterproof motor drives the driving bevel gear 21 to rotate, driving the driven bevel gears 22 to rotate, so that the lead screws 23 on both sides rotate, and the device block 31 can be driven to move to both sides.

[0022] The pushing component includes a push rod 391. The push rod 391 is fixedly installed at one end of the front side of the adjusting block 33. An inclined sliding block 392 is arranged in a resisting manner at the front end of the push rod 391. The inclined sliding block 392 is fixed on the rear side of the mounting plate 1. The inclined sliding block 392 is arranged in a dislocation manner with the sliding groove 25. The inclined sliding block 392 is used to push the push rod 391 to move longitudinally, so that the push rod 391 pushes the adjusting block 33 to slide inside the device block 31.

[0023] The sealing sampling mechanism includes a resistance cylinder 51, which is fixed to the middle position of the rear side of the mounting plate 1 through a connecting rod. A driving gear 52 is installed in the resistance cylinder 51 through a driving motor. A driven gear 53 is meshed and connected to the middle position of the resistance cylinder 51 through the driving gear 52. Arc-shaped through grooves 54 are provided at the upper and lower ends of the driven gear 53. A sealing plate 55 is installed in the arc-shaped through groove 54 through a sliding rod. A drainage component is installed at the bottom end of the rear side of the sealing plate 55. A rubber gasket 58 is installed on the rear side of the resistance cylinder 51 through a sliding ring 57. A cavity for the sampling drill bit 7 to penetrate is provided in the middle of the resistance cylinder 51, the driven gear 53, the sliding ring 57 and the rubber gasket 58. When the arc-shaped through groove 54 rotates with the driven gear 53, the sealing plate 55 is driven to move vertically through the sliding rod, thereby opening and connecting the various cavities inside the resistance cylinder 51 for the sampling drill bit 7 to penetrate.

[0024] The drainage assembly includes a drainage cylinder 561, which is installed on the rear side of the sealing plate 55 through a fixing rod 562. A piston 563 is slidably installed inside the drainage cylinder 561, and a threaded rod 564 is installed at the bottom of the piston 563. The threaded rod 564 extends out of the drainage cylinder 561 and is threadedly connected to a gear B565 on the outer periphery of the threaded rod 564, which is installed on the outer end of the drainage cylinder 561 through a bearing. A through groove 566 is provided at the lower end of the sliding ring 57, and a rack B567 is fixedly connected to the inner wall of the through groove 566, and the rack B567 is meshed with the gear B565. A plurality of rows of water inlet holes 9 are circumferentially provided on the side wall at the top end of the drainage cylinder 561, and each row of water inlet holes 9 is vertically and evenly spaced. A receiving groove 10 is provided at the lower end of the inner side of the abutment cylinder 51 corresponding to the drainage cylinder 561, and the drainage cylinder 561 slides in the receiving groove 10 as the sealing plate 55 moves, so as to prevent the sampling drill bit 7 from colliding with the drainage cylinder 561 when penetrating.

[0025] A sampling drill bit 7 is installed on the front side of the mounting plate 1 , and the rear side of the sampling drill bit 7 passes through the mounting plate 1 and extends to the inside of the abutment cylinder 51 . An electric drill 8 is detachably installed on the front side of the sampling drill bit 7 through a connecting port.

[0026] Working principle: When using the underwater pouring site concrete setting state detection device, the diver will first dive into the water and bring the device to the sampling location by the handle, observe the diameter of the sampling building (sampling pier), and drive the active bevel gear 21 to rotate through the waterproof motor, driving the driven bevel gear 22 to rotate, so that the screw rods 23 on both sides rotate, driving the device block 31 to move to both sides, and at the same time, the front side of the push rod 391 will slide on the inclined surface of the inclined slider 392 with the movement of the device block 31, causing the push rod 391 to extend to the rear side and push the adjustment block 33 Move in the device block 31, so that the gear A36 at the bottom of the rotating rod 34 rotates under the action of the rack A37, driving the rotating rod 34 to rotate, and the angle of the sealing cylinder 35 slowly changes with the rotation of the rotating rod 34, so that the rubber suction cup 38 on the rear side of the sealing cylinder 35 is closely attached to the surface of the sampling building, and finally the air in the sealing cylinder 35 is extracted by the vacuum pump 6, so that the rubber suction cup 38 is firmly adsorbed on the surface of the sampling building, so as to fix the device. The vacuum pump 6 adopts a small rotary vane vacuum pump with a power of 0.85kw and a flow rate of 5-30 L / s; At this time, the rubber gasket 58 at the front end of the resistance cylinder 51 will resist the surface of the sampling building and squeeze out part of the water in the resistance cylinder 51. At the same time, with the resistance of the rubber gasket 58, the sliding ring 57 moves into the resistance cylinder 51, driving the rack B567 to move, thereby driving the gear B565 to rotate, so that the threaded rod 564 pulls the piston 563 to slide downward in the drainage cylinder 561, and the remaining water in the front chamber of the resistance cylinder 51 is sucked into the drainage cylinder 561 through the water inlet hole 9 at the top of the drainage cylinder 561. Then the driving motor drives the driving gear 52 to rotate, driving the driven gear 53 to rotate, so that the sliding rod slides in the arc-shaped through groove 54 on the surface of the driven gear 53. , so that the sealing plate 55 on the rear side of the driven gear 53 moves to the upper and lower ends, and at the same time drives the drainage cylinder 561 to slide downward into the accommodating groove 10, thereby connecting the front and rear chambers of the resistance cylinder 51, and driving the sampling drill bit 7 through the resistance cylinder 51 by the electric drill 8 to drill holes for sampling the underwater poured building. After the sampling is completed, the sampling drill bit 7 will carry the sample back to the front side chamber of the sealing plate 55, and at the same time drive the driving motor to drive the driving gear 52 to rotate in the opposite direction, so that the sealing plate 55 moves inward until it is closed, and finally the vacuum pump 6 is turned off to release the fixation of the device. The diver takes the obtained sample back to the laboratory for analysis to obtain the data of the coagulation state of the concrete underwater; In the present invention, the module of gear A36 is 2 and the number of teeth is 40. The distribution law of rack A37 is adapted to that of gear A36. The module of driving gear 52 is 4 and the number of teeth is 18. The module of driven gear 53 is 4 and the number of teeth is 24. All of them are made of aluminum alloy material. The aluminum oxide on their surfaces can effectively prevent the gear surfaces from being rusted during underwater operation. The main function of gear A36 is that when the device block 31 moves horizontally, it cooperates with the inclined surface of the inclined slider 392 to drive the push rod 391 to move longitudinally, and then push the adjusting block 33 to drive the sealing cylinder 35 to move longitudinally, so that when dealing with a thicker pier, the sealing cylinder 35 can move to the outer area of the pier and drive the sealing cylinder 35 to rotate synchronously through the meshing of gear A36 and rack A37, that is, the longitudinal movement of the adjusting block 33 drives the sealing cylinder 35, and the transmission of gear A36 in this module drives the sealing cylinder 35 to make corresponding angular adjustments; The relationship between the longitudinal movement distance of the adjusting block 33 and the horizontal movement distance of the device block 31 is determined by the inclined surface angle of the inclined slider 392. On the basis of using gear A36 with a determined module and number of teeth, the inclined surface angle of the inclined slider 392 can be adjusted and confirmed through actual operation experiments. The inclined slider 392 can be fixed on the mounting plate 1 through bolts and other components, and the replacement is very convenient. Therefore, this device can be very conveniently applied to piers of different specifications.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An on-site concrete setting state detection device for underwater pouring, characterized in that: It includes a mounting plate (1), a moving and adjusting component is installed inside the mounting plate (1), baffles (4) are installed at both ends of the rear side of the mounting plate (1) through the moving and adjusting component, an adjusting and fixing mechanism is installed at the four corners at the rear side of the baffle (4) through connecting rods, and a sealed sampling mechanism is installed at the middle position of the rear side of the mounting plate (1) through a connecting rod. The adjusting and fixing mechanism includes a device block (31), the device block (31) is fixedly installed at the rear side of the baffle (4) through a connecting rod, an adjusting block (33) is installed in the middle cavity of the device block (31) in a limited manner through a sliding block (32), a sealing cylinder (35) is installed inside the adjusting block (33) through a rotating rod (34), a gear A (36) is sleeved at one end of the rotating rod (34) passing through the bottom of the adjusting block (33), a rack A (37) is meshed with one side of the gear A (36), the rack A (37) is fixed on the inner wall of the device block (31), a rubber suction cup (38) is fixedly connected to the rear side of the sealing cylinder (35), and a pushing component is installed at the rear side of the mounting plate (1), and the pushing component is used to adjust the position of the adjusting block (33).

2. The on-site concrete setting state detection device for underwater pouring according to claim 1, wherein: The moving and adjusting component includes a driving bevel gear (21), the driving bevel gear (21) is installed inside the mounting plate (1) through a waterproof motor, driven bevel gears (22) are meshed on both sides of the tooth surface of the driving bevel gear (21), a lead screw (23) is fixedly installed on one side of the driven bevel gear (22), a moving mounting block (24) is sleeved on the lead screw (23) in a threaded manner, and the moving mounting block (24) is slidably limited in a sliding groove (25) opened at the rear side of the mounting plate (1).

3. An on-site concrete setting state detection device for underwater pouring according to claim 2, characterized in that: The pushing component includes a push rod (391), the push rod (391) is fixedly installed at one end of the front side of the adjusting block (33), an inclined slider (392) is arranged in a butting manner at the front end of the push rod (391), the inclined slider (392) is fixed at the rear side of the mounting plate (1), the inclined slider (392) is arranged in a dislocation manner with the sliding groove (25), and the inclined slider (392) is used to push the push rod (391) to move longitudinally.

4. An underwater casting on-site concrete setting state detection device according to claim 1 or 3, characterized in that: The sealed sampling mechanism includes a butting cylinder (51), the butting cylinder (51) is fixedly connected to the middle position of the rear side of the mounting plate (1) through a connecting rod, a driving gear (52) is installed inside the butting cylinder (51) through a driving motor, a driven gear (53) is meshed with the driving gear (52) at the middle position inside the butting cylinder (51), arc-shaped through grooves (54) are opened at the upper and lower ends of the driven gear (53), a sealing plate (55) is installed in the arc-shaped through grooves (54) through sliding rods, a drainage component is installed at the bottom end of the rear side of the sealing plate (55), a rubber gasket (58) is installed in a limited manner at the rear side of the butting cylinder (51) through a sliding ring (57), and when the arc-shaped through grooves (54) rotate following the driven gear (53), the sealing plate (55) is driven to move vertically through the sliding rods.

5. An on-site concrete setting state detection device for underwater pouring according to claim 4, characterized in that: The drainage component includes a drainage cylinder (561), the drainage cylinder (561) is installed on the rear side of the sealing plate (55) through a fixing rod (562), a piston (563) is slidably installed inside the drainage cylinder (561), a threaded rod (564) is installed at the bottom of the piston (563), a gear B (565) is threadedly connected to the periphery of the part of the threaded rod (564) extending out of the drainage cylinder (561), the gear B (565) is installed at the outer end of the drainage cylinder (561) through a bearing, a through groove body (566) is opened at the lower end of the sliding ring (57), a rack B (567) is fixedly connected to the inner side wall of the through groove body (566), and the rack B (567) is meshed with the gear B (565).

6. An on-site concrete setting state detection device for underwater pouring according to claim 1 or 5, characterized in that: A vacuum pump (6) is installed on the top of the device block (31), and the vacuum pump (6) is connected to the front side of the sealing cylinder (35) through a hose.

7. An on-site concrete setting state detection device for underwater pouring according to claim 4, characterized in that: A sampling drill bit (7) is installed on the front side of the mounting plate (1), the rear side of the sampling drill bit (7) passes through the mounting plate (1) and extends into the inside of the contact cylinder (51), and an electric drill (8) is detachably installed on the front side of the sampling drill bit (7) through a connection port.

8. An on-site concrete setting state detection device for underwater pouring according to claim 5, characterized in that: A plurality of columns of water inlet holes (9) are circumferentially opened on the side wall at the top end of the drainage cylinder (561), and each column of water inlet holes (9) is vertically and equally spaced. A receiving groove (10) is provided at the lower end inside the contact cylinder (51) corresponding to the drainage cylinder (561), and the drainage cylinder (561) slides in the receiving groove (10) as the sealing plate (55) moves.

9. An on-site concrete setting state detection device for underwater pouring according to claim 4, characterized in that: A cavity for the sampling drill bit (7) to penetrate through is provided in the middle of the contact cylinder (51), the driven gear (53), the sliding ring (57) and the rubber gasket (58).

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