Concrete impermeability detection device

Abstract

The invention discloses a concrete anti-permeability performance detection device, and belongs to the technical field of concrete anti-permeability performance detection.The concrete anti-permeability performance detection device comprises a lower detection machine body, a detection table is arranged on the upper portion of the lower detection machine body, a hollow area is formed in the middle of the detection table, and a bottom sealing ring and a water injection opening are arranged on the inner wall of the hollow area; the alignment buffer mechanism is installed on the lower detection machine body and comprises a damping spring, a fixing plate and an alignment ring, and the alignment ring and the detection table are correspondingly arranged; the alignment plate is rotationally connected to the alignment ring and comprises a plate body and a rotating part, and the plate body is kept in an inclined state through a torsional spring; the upper detection machine body comprises a detection cylinder and a telescopic driving assembly, an alignment groove and a placement groove are formed in the inner circumference of the detection cylinder, a pressing assembly is arranged in the alignment groove, and a sealing ring is arranged in the placement groove in advance; and the detection cylinder is linked with the lower detection machine body through a telescopic driving assembly. The sealing performance can be improved, the concrete is automatically aligned and matched with the detection cylinder, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete impermeability performance detection, and more specifically, to a concrete impermeability performance detection device. Background Art

[0002] Impermeable concrete is a kind of concrete material with good impermeability performance, mainly used to prevent water and other liquids from penetrating into buildings or structures. This kind of concrete improves the impermeability by increasing the density of the concrete and improving the pore structure, thereby reducing the penetration channels. There are mainly two methods to improve the performance of impermeable concrete: one is to adjust the mix proportion of the concrete, and the other is to use air-entraining admixtures. Adjusting the mix proportion of the concrete can be achieved by reducing the water-cement ratio, selecting appropriate varieties and strength grades of cement, etc.; while using air-entraining admixtures can generate non-connected bubbles inside the concrete, cut off the capillary channels, and change the pore structure, thereby improving the impermeability of the concrete.

[0003] In the prior art, it is necessary to place the concrete block in the detection cylinder of the detector, and the sizes of the detection cylinder and the concrete block need to be aligned and matched. It is necessary to manually move the concrete block to make it correspond to the detection cylinder. The concrete block is heavy, and it is laborious to move and adjust the position, which reduces the efficiency and makes the operator prone to fatigue. In the prior art, a detachable detection cylinder is often used to facilitate the installation of the concrete block. However, it is still necessary to manually adjust the positions of the concrete block and the detection cylinder corresponding to the instrument. And because the sizes of the concrete block and the detection cylinder are matched, after manually adjusting the correspondence between the concrete block and the detection cylinder, it is necessary to place the concrete block in the detection cylinder. Under the action of gravity, the concrete block is likely to hit the bottom of the detection cylinder when entering the detection cylinder, resulting in the breakage of the concrete block and affecting the accuracy of the impermeability detection data. It is also more troublesome to take out the concrete block that has completely entered the detection cylinder. It is necessary to disassemble the detection cylinder, which is inefficient, time-consuming and laborious. Finally, in the existing technology, a sealing ring needs to be sleeved in advance when the concrete is put into the detection cylinder to enhance the sealing performance of the concrete in the detection cylinder. However, after the sealing ring is sleeved, the friction force of the concrete when entering the detection cylinder increases, resulting in a greater force required for the concrete to enter the detection cylinder. At the same time, it will also cause the problem that the sealing ring is worn and the sealing performance is reduced. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a concrete impermeability performance detection device, which can improve the sealing performance, and the concrete can be automatically aligned and matched with the detection cylinder, thereby improving the working efficiency.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A device for testing the anti-seepage performance of concrete, comprising a lower testing body, a testing platform being arranged on the upper part thereof, a hollow area being formed in the middle of the testing platform, a bottom sealing ring and a water injection port being arranged on the inner wall of the hollow area; an alignment buffer mechanism being installed on the lower testing body, comprising a damping spring, a fixing plate and an alignment ring, the alignment ring being arranged corresponding to the testing platform, and achieving buffering movement in the height direction through the damping spring; an alignment plate being rotatably connected to the alignment ring, comprising a plate body and a rotating part, the plate body being kept in an inclined state by a torsion spring , and rotates to a vertical state under the action of concrete gravity to guide the concrete to accurately align; the upper detection body includes a detection cylinder and a telescopic drive assembly, the inner circumference of the detection cylinder is provided with an alignment groove and a placement groove, the alignment groove is provided with a pressing assembly, and the placement groove is pre-set with a sealing ring; wherein, the alignment plate is embedded in the alignment groove in a vertical state and triggers the pressing assembly, so that the sealing ring is released from the placement groove and abuts against the outer circumference of the concrete to achieve sealing; the detection cylinder is linked with the lower detection body through the telescopic drive assembly to complete automatic alignment and mold sealing.

[0007] Furthermore, a limiting hole and an alignment plate groove are provided on the alignment ring of the alignment buffer mechanism, the limiting hole matches the limiting column of the detection platform, and the alignment plate groove is adapted to the shape of the alignment plate to achieve multi-level limiting during the buffering process.

[0008] Furthermore, the pressing assembly includes a pressing block, a sliding rod and a first spring, the sliding rod connects the pressing block and the movable cavity, the first spring is sleeved on the outer periphery of the sliding rod, and the pressing block triggers the sealing ring release device through the sliding rod after being compressed.

[0009] Furthermore, the sealing ring release device is an electrically controlled telescopic assembly, including a pressure sensor, an electrically controlled drive component and a telescopic limit plate. The pressure sensor is linked to the trigger rod. When the pressure reaches a threshold, the telescopic limit plate is controlled to retract to release the obstruction to the sealing ring.

[0010] Furthermore, the sealing ring release device is a mechanical limit plate assembly, including a trigger part, a rotating rod and a limit plate, and the trigger rod presses the trigger part to rotate it, driving the limit plate to retract into the return cavity to release the sealing ring.

[0011] Furthermore, the opening diameter of the placement groove opened on the inner wall of the detection tube is smaller than the natural diameter of the sealing ring, and the overall diameter of the placement groove is larger than the natural diameter of the sealing ring, so as to ensure that the sealing ring fits tightly to the concrete and the inner wall of the detection tube after rebounding.

[0012] Furthermore, the outer wall of the detection tube is provided with a limiting groove matching the limiting column, and the limiting groove and the limiting hole work together to ensure the precise alignment of the detection tube and the detection platform.

[0013] Further, the arc of the counterposition plate body is consistent with the arcs of the inner wall of the detection table and the inner wall of the detection cylinder, so as to form a continuous sealing surface in the vertical state.

[0014] Further, the telescopic driving assembly includes an electric control or hydraulic driving device, and its output end is connected to the upper detection fuselage to control the lifting speed and pressure of the detection cylinder.

[0015] Further, the water injection port is located at the center of the hollowed area of the detection table and is connected to an external water pump, and is used to apply water pressure to the concrete to detect the impermeability performance.

[0016] Compared with the prior art, the advantages of the present invention are as follows: Through the optimization of the structural design and the synergistic effect of the functional modules, the present invention significantly improves the efficiency and accuracy of the detection of the impermeability performance of concrete. Specifically, the device adopts the linkage design of the counterposition buffer mechanism and the counterposition plate, uses the damping spring to slow down the impact force when the concrete falls, and combines the counterposition plate controlled by the torsion spring to automatically change from the inclined state to the vertical state under the action of gravity, realizing the precise counterposition of the concrete and the detection cylinder, avoiding the cumbersome manual adjustment and the problem of concrete damage caused by collision. The counterposition groove arranged in the detection cylinder cooperates with the pressing component. When the counterposition plate is embedded in the counterposition groove, the pressing block is triggered to move, and the trigger rod is linked through the sliding rod to drive the seal ring release device (electric control telescopic component or mechanical limit piece component), so that the seal ring pre-placed in the placement groove automatically rebounds and closely fits the outer periphery of the concrete, which not only reduces the friction of the traditional seal ring installation, but also improves the sealing reliability and durability. In addition, the detection cylinder and the detection table are multi-levelly matched through the limit groove, the limit hole and the limit column to ensure the counterposition accuracy during the mold sealing process, and the opening size design of the placement groove (smaller than the natural diameter of the seal ring but with a larger overall groove diameter) further ensures the rebound tension and sealing effect of the seal ring after release. The device also realizes the automatic lifting of the detection cylinder through the telescopic driving assembly, and cooperates with the central positioning of the water injection port and the linkage of the water pump, and can accurately apply water pressure to complete the impermeability test. The overall solution solves the core problems of low manual operation efficiency, easy wear of the seal ring, and easy damage of the concrete in the prior art through the cooperation of the mechanical structure and the control system, realizing the full automation, high precision and high reliability of the detection process. Description of the Drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is for the present invention Figure 1 is an enlarged structural schematic diagram of part A in Figure 3 is a rear three-dimensional structure and partial enlarged schematic diagram of the present invention; Figure 4 is a three-dimensional structural schematic diagram of the counterposition plate of the present invention; Figure 5 Schematic side view three-dimensional structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic view of the structure at position B in; Figure 7 Partial cross-sectional structure schematic view of the present invention; Figure 8 For the present invention Figure 7 Enlarged schematic view of the structure at position C in; Figure 9 For the present invention Figure 7 Enlarged schematic view of the structure at position D in; Figure 10 Partial cross-sectional structure schematic view of Embodiment 2 of the present invention; Figure 11 For the present invention Figure 10 Enlarged schematic view of the structure at position E in; Figure 12 Partial three-dimensional cross-sectional structure schematic view of Embodiment 2 of the present invention; Figure 13 For the present invention Figure 12 Enlarged schematic view of the structure at position F in.

[0018] Explanation of the reference numerals in the figure: Lower detection fuselage 1, control board 11, control knob 111, detection table 12, limit post 121, alignment bottom groove 122, bottom sealing ring 123, water injection port 13, alignment buffer mechanism 2, damping spring 21, fixing plate 22, alignment ring 23, limit hole 231, alignment plate groove 232, rotation groove 233, rotation cavity 234, alignment plate 3, rotation part 31, torsion spring 311, upper detection fuselage 4, detection cylinder 41, alignment groove 411, pressing block 411-1, sliding rod 411-2, first spring 411-3, connecting plate 411-4, trigger rod 411-5, placement groove 412, moving cavity 413, pressing cavity 413-1, return cavity 413-2, pressure sensor 414, electric control telescopic component 415, telescopic output end 415-1, telescopic limit piece 415-2, limit piece component 416, trigger part 416-1, rotating rod 416-2, limit piece 416-3, second spring 416-4, telescopic drive component 42, limit groove 43. Detailed implementation manners

[0019] Embodiment 1:

[0020] Please refer to Figures 1 - 9, a device for detecting the impermeability of concrete, comprising a lower detection body 1, a positioning buffer mechanism 2, a positioning plate 3 and an upper detection body 4. The lower detection body 1 is installed on a plane, which is the ground in this embodiment. The positioning buffer mechanism 2 is installed on the lower detection body 1 and has the ability to move in the height direction. The positioning plate 3 is installed on the positioning buffer mechanism 2 and is rotatably connected to the positioning buffer mechanism 2. The upper detection body 4 is installed on the lower detection body 1 and has the ability to move in the height direction so that the upper detection body 4 moves towards the lower detection body 1.

[0021] Specifically, the lower detection body 1 includes a chassis, a control board 11, a detection table 12 and a water injection port 13. The chassis is installed on a plane, and a plurality of water pumps are arranged in the chassis, and the plurality of water pumps are communicated with the corresponding water injection ports 13 so that the water pumps convey water to the water injection ports 13. The control board 11 is installed on the upper end side wall of the lower detection body 1, and a plurality of control knobs 111 are equidistantly arranged on the control board 11. The control knobs 111 are used to control the corresponding water pumps to convey water to and drain water from the corresponding water injection ports 13. The detection table 12 is installed on the upper end of the lower detection body 1. A plurality of detection tables 12 are installed on the lower detection body 1, and a hollow part is formed in the middle of the detection table 12, and concrete is placed in the hollow part. The detection table 12 includes limiting columns 121 arranged equidistantly around the circumference, and a positioning bottom groove 122 is formed on the inner wall of the hollow part between each limiting column 121, so that an opening of the positioning bottom groove 122 is formed on the end surface of the detection table 12. A bottom sealing ring 123 is further arranged along the inner circumference of the bottom of the hollow part. The inner circumference of the bottom sealing ring 123 matches the outer circumference of the concrete, so that the concrete is placed in the hollow part and sealed by the bottom sealing ring 123. The water injection port 13 is opened in the hollow part of the detection table 12, and the water injection port 13 is located in the middle of the hollow part, so that when the concrete is placed, the water injection port 13 faces the middle of the concrete for water pressure detection.

[0022] Specifically, the alignment buffer mechanism 2 includes a damping spring 21, a fixing plate 22, and an alignment ring 23. The damping spring 21 is installed between multiple detection platforms 12, and the damping spring 21 is located in the middle of the end face of the lower detection fuselage 1. When the alignment buffer mechanism 2 is pressed by concrete, the damping spring 21 slowly approaches the end face of the detection platform 12 under the influence of damping. Under normal conditions, the upper end face height of the damping spring 21 is higher than the upper end face of the detection platform 12. The fixing plate 22 is installed on the damping spring 21, and the fixing plate 22 is erected on both sides of the lower detection fuselage 1. Under normal conditions, the fixing plate 22 hangs on one side above the detection platform 12. The alignment rings 23 are respectively arranged corresponding to the multiple detection platforms 12, and the multiple alignment rings 23 are fixedly connected to the side wall of the fixing plate 22, so that the damping spring 21 drives the alignment rings 23 to move in the height direction. The alignment ring 23 matches the end face of the detection platform 12. Specifically, the alignment ring 23 includes a limit hole 231, an alignment plate groove 232, a rotation groove 233, and a rotation cavity 234. The limit hole 231 matches and corresponds to the limit post 121, so that when the alignment ring 23 abuts against the detection platform 12, the limit post 121 can pass through the limit hole 231 for limiting. The alignment plate grooves 232 respectively correspond to the opening positions of the multiple alignment bottom grooves 122, and the groove widths match each other. The alignment plate grooves 232 and the alignment bottom grooves 122 match the alignment plate 3, so that the alignment plate 3 can completely fit into the grooves. The rotation groove 233 is opened at the upper end of the alignment plate groove 232, and the opening depth of the rotation groove 233 is greater than that of the alignment plate groove 232. The rotation cavities 234 are opened on both sides of the rotation groove 233, and the rotation cavities 234 communicate with the rotation groove 233.

[0023] Specifically, the alignment plate 3 includes a plate body and a rotating part 31. The radian of the inner wall of the plate body matches the radian of the inner wall of the alignment ring 23, so that when the alignment plate 3 is in a vertical state, the inner wall of the plate body can completely match the inner wall of the alignment ring 23. The rotating part 31 is placed on the back of the plate body wall, and the rotating part 31 is fixedly connected to the plate body wall. Rotating rods are extended on both sides of the rotating part 31. The rotating rods are matched with the rotating cavity 234, and the rotating part 31 is embedded in the rotating groove 233. By embedding the rotating rods in the rotating cavity 234, the rotating part 31 can rotate in the rotating groove 233. Torsion springs 311 are also sleeved on the rotating rods on both sides of the rotating part 31. The torsion springs 311 are placed in the rotating groove 233 to control the reset of the alignment plate 3 after rotation. Under normal conditions, the alignment plate 3 remains in an inclined state. The lower end of the alignment plate 3 is close to the center of the alignment ring 23, and the upper end of the alignment plate 3 opens along the center of the alignment ring 23. It should be noted here that when the concrete is placed on the alignment ring 23, the alignment plate 3 is in an inclined and open state. At this time, due to the gravity of the concrete, the concrete will squeeze the lower end of the alignment plate 3, so that the alignment plate 3 slowly changes from the open state to the state of vertically fitting the alignment plate groove 232. At the same time, the gravity of the concrete squeezes the damping spring 21 to slow down the moving speed of the alignment ring 23 towards the detection table 12 and prevent the lower end of the concrete from being broken due to gravity. Among them, due to the reverse force applied by the torsion spring 311, the concrete is slowly aligned in multiple alignment plates 3 to evenly abut against the inner circumference of the alignment plate 3. Finally, when the alignment ring 23 moves on the detection table 12, the alignment plate 3 is completely embedded in the alignment bottom groove 122 and the alignment plate groove 232, and the concrete is also placed in the hollow part and is limited by the alignment ring 23 and the alignment plate 3.

[0024] Specifically, the upper detection fuselage 4 includes a detection cylinder 41, a telescopic drive assembly 43 and a limit groove 43. The detection cylinder 41 is arranged corresponding to the positions of multiple detection tables 12 and multiple alignment rings 23, and the end faces of the detection cylinder 41, the detection table 12 and the alignment ring 23 match each other. The telescopic drive assembly 43 is located on the side of the upper detection fuselage 4. One end of the telescopic drive assembly 43 is fixedly connected to the upper detection fuselage 4, and the other end is fixedly connected to the upper end of the lower detection fuselage 1. The telescopic drive assembly 43 includes a driving part and an output rod. The output end of the driving part is connected to the output rod to drive the output rod to move in the height direction through the driving part. The limit grooves 43 are opened on multiple detection cylinders 41, and the limit grooves 43 are respectively arranged equidistantly around the center of the detection cylinder 41. The limit grooves 43 are respectively arranged corresponding to the limit posts 121 and the limit holes 231 and are all matched with each other. When the telescopic drive assembly 43 drives the detection cylinder 41 to move towards the alignment ring 23, the limit posts 121 can pass through the limit holes 231 and enter the limit grooves 43 for fastening and limiting.

[0025] Among them, a plurality of alignment grooves 411 are provided on the inner circumference of the detection cylinder 41. In this embodiment, the number of alignment grooves 411 is four, and the plurality of alignment grooves 411 are equidistantly arranged. A corresponding pressing component is provided at the bottom end of the alignment groove 411. The pressing component includes a pressing block 411-1, a sliding rod 411-2, a first spring 411-3, a connecting plate 411-4, and a trigger rod 411-5. Under normal conditions, the first spring 411-3 remains in its natural state, and one end of the first spring 411-3 is fixedly connected to the pressing block 411-1, and the other end of the first spring 411-3 is fixedly connected to the bottom wall of the alignment groove 411. One end of the sliding rod 411-2 is fixedly connected to the pressing block 411-1, and the other end of the sliding rod 411-2 penetrates the bottom wall of the alignment groove 411 and is slidably connected to the alignment groove 411. The first spring 411-3 is sleeved on the outer circumference of the sliding rod 411-2, so that when the pressing block 411-1 is squeezed, the first spring 411-3 presses against the bottom wall of the alignment groove 411 and compresses, and the sliding rod 411-2 moves outward toward the outside of the bottom wall of the alignment groove 411 under extrusion. It should be noted here that when the first spring 411-3 is in the extreme extrusion position, the distance from the pressing block 411-1 to the opening of the alignment groove 411 matches the setting height above the rotating part 31 of the alignment plate 3. A placement groove 412 is provided around the inner circumference of the detection cylinder 41, and the placement groove 412 is provided near the bottom wall of the alignment groove 411. Among them, the inner circumference of the placement groove 412 matches the sealing ring, the opening diameter of the placement groove 412 is smaller than the diameter of the sealing ring in its natural state, and the overall opening diameter of the placement groove 412 is larger than the overall diameter of the sealing ring in its natural state, so that when the sealing ring is placed in the placement groove 412, if there is no obstruction, the sealing ring will rebound. The diameter of the sealing ring in its natural state matches the outer circumference of the concrete, so that after the sealing ring rebounds, it can rebound to the outer circumference of the concrete and abut against the inner wall of the detection cylinder 41 for sealing. Among them, an activity cavity 413 is provided between the bottom end of the alignment groove 411 and the placement groove 412, and the sliding rod 411-2 penetrates the bottom wall of the alignment groove 411 and extends into the activity cavity 413. The other end of the sliding rod 411-2 is fixedly connected to the connecting plate 411-4, and the connecting plate 411-4 is slidably connected in the activity cavity 413. The trigger rod 411-5 is located at the end far from the alignment groove 411, and the trigger rod 411-5 is fixedly connected to the connecting plate 411-4, so that when the sliding rod 411-2 moves, it drives the trigger rod 411-5 to move. A pressure sensor 414 is provided at one end of the activity cavity 413 far from the alignment groove 411. When the pressing block 411-1 is pressed, the sliding rod 411-2 moves to drive the trigger rod 411-5 to move toward the pressure sensor 414. When the upper end of the alignment plate 3 is completely placed in the alignment groove 411, the trigger rod 411-5 completely abuts against the pressure sensor 414. A side of the pressure sensor 414 is provided with an electric control telescopic component 415, and the electric control telescopic component 415 is installed in the activity cavity 413.The electric control telescopic assembly 415 includes an electric control driving member, a telescopic output end 415-1 and a telescopic limiting piece 415-2. The electric control driving member is electrically connected to the pressure sensor 414. When the pressure sensor 414 is squeezed by the trigger rod 411-5 and reaches the threshold value set by the pressure sensor 414, the pressure sensor 414 sends an electrical signal to the electric control driving member. The electric control driving member outputs at the telescopic output end 415-1, and the telescopic output end 415-1 drives the telescopic limiting piece 415-2 to perform telescopic operation. Under normal conditions (when the pressing block 411-1 is not squeezed), the telescopic limiting piece 415-2 penetrates through the wall of the movable cavity 413 and extends into the placement groove 412 to block the sealing ring. It should be noted here that the inner wall radian of the alignment plate 3 matches the inner wall radian of the detection table 12 and the inner wall radian of the detection cylinder 41 respectively.

[0026] Working principle: When this solution is used, first place the concrete on the alignment ring at the upper end of the corresponding detection table. The alignment plate around the alignment ring aligns the concrete with the hollow part of the detection table. At the same time, the alignment buffer mechanism buffers the downward pressure of the concrete gravity to slow down the gravity effect brought by the downward pressure of the concrete gravity. When the concrete is placed in the bottom sealing ring in the detection table, the upper detection fuselage presses down the detection cylinder corresponding to the detection table through the telescopic drive assembly for mold closing. During the downward pressing process of the upper detection fuselage, the limiting groove on the detection cylinder abuts against the limiting column correspondingly. At the same time, the alignment plate is pressed into a vertical state by the concrete, and the alignment plate is correspondingly inserted into the alignment groove and presses the pressing block to activate the pressure sensor by the trigger rod, retract the telescopic limiting piece, so that the sealing ring placed in the placement groove rebounds and tightens on the outer peripheral wall of the concrete to complete the sealing function. It should be noted here that the sealing ring is pre-inserted into the placement groove before the operation and is limited by the telescopic limiting piece.

[0027] Embodiment 2:

[0028] Please refer to Figures 10 - 13 , a concrete impermeability performance detection device. Different from Embodiment 1, a pressing cavity 413-1 is opened at the lower end of the movable cavity 413 close to the placement groove 412, and the pressing cavity 413-1 is communicated with the movable cavity 413. A communicated return cavity 413-2 is opened at the side end of the movable cavity 413 close to the placement groove 412, and the return cavity 143-2 communicates the movable cavity 413 and the placement groove 412 with each other.

[0029] Specifically, a limiting piece assembly 416 is arranged in the movable cavity 413. The limiting piece assembly 416 is used to replace the pressure sensor 414 and the electro-control telescopic assembly 415 in Embodiment 1. The limiting piece assembly 416 includes a triggering part 416-1, a rotating rod 416-2, a limiting piece 416-3 and a second spring 416-4. The rotating rod 416-2 is arranged on both sides of the inner wall of the movable cavity 413, and the rotating rod 416-2 is rotatably connected to the inner wall of the movable cavity 413. The triggering part 416-1 is sleeved on the rotating rod 416-2, and the triggering part 416-1 is rotatably connected to the rotating rod 416-2 in a limited manner. The bottom end of the triggering part 416-1 is aligned with the triggering rod 411-5, so that when the triggering rod 411-5 moves, it presses against the triggering part 416-1. The second spring 416-4 is embedded in the pressing cavity 413-1, and one end of the second spring 416-4 is fixedly connected to the triggering part 416-1, and the other end of the second spring 416-4 is fixedly connected to the bottom wall of the pressing cavity 413-1. When the triggering part 416-1 is pressed, the triggering part 416-1 rotates and the end moves towards the pressing cavity 413-1 along with the pressing, and the second spring 416-4 is compressed. The limiting piece 416-3 is located at the upper end of the triggering part 416-1. The limiting piece 416-3 is semi-circular. The limiting piece 416-3 is made of a ductile material, so that when the triggering part 416-1 is pressed and rotates, the limiting piece 416-3 is recovered from the placement groove 412 into the return cavity 413-2 along with the rotation, so that the opening distance of the placement groove 412 is restored for the sealing ring to rebound.

[0030] Working principle: When this solution is used, when the alignment plate presses the pressing block, the subsequent process changes. First, the triggering rod presses the bottom end of the triggering part, so that the triggering part is compressed into the pressing cavity along with the spring. At the same time, the triggering part is pressed and rotates while being sleeved on the rotating rod, so that the upper end of the triggering part moves inward. When the upper end of the triggering part moves inward, the limiting piece is driven to press tightly against the inside of the return cavity, so that the limiting piece opens the block on the opening direction of the placement groove, and then the limit of the sealing ring is realized through the mechanical structure.

Claims

1. A concrete anti-permeability testing device, characterized in that: include: A lower inspection body (1) is provided with an inspection platform (12) at its upper portion, a hollow area is formed in the middle of the inspection platform (12), and a bottom sealing ring (123) and a water injection port (13) are provided on the inner wall of the hollow area; An alignment buffer mechanism (2) is mounted on the lower detection body (1), comprising a damping spring (21), a fixing plate (22) and an alignment ring (23); the alignment ring (23) is arranged corresponding to the detection platform (12), and a buffer movement in the height direction is achieved through the damping spring (21); An alignment plate (3) is rotatably connected to the alignment ring (23), comprising a plate body and a rotating portion (31); the plate body is maintained in an inclined state by a torsion spring (311), and is rotated to a vertical state under the action of concrete gravity to guide the concrete to be accurately aligned; The upper detection body (4) comprises a detection tube (41) and a telescopic drive assembly (42); the inner circumference of the detection tube (41) is provided with an alignment groove (411) and a placement groove (412); a pressing assembly is provided in the alignment groove (411); and a sealing ring is pre-set in the placement groove (412); The alignment plate (3) is embedded in the alignment groove (411) in a vertical state and triggers the pressing assembly, so that the sealing ring is released from the placement groove (412) and abuts against the outer periphery of the concrete to achieve sealing; the detection cylinder (41) is linked with the lower detection body (1) through the telescopic driving assembly (42) to complete automatic alignment and mold sealing.

2. The concrete anti-permeability testing device according to claim 1 is characterized in that: A limiting hole (231) and a positioning plate slot (232) are provided on the positioning ring (23) of the positioning buffer mechanism (2); the limiting hole (231) matches the limiting column (121) of the detection platform (12); and the positioning plate slot (232) matches the shape of the body of the positioning plate (3) to achieve multi-level limiting in the buffering process.

3. The concrete anti-permeability testing device according to claim 1 is characterized in that: The pressing assembly comprises a pressing block (411-1), a sliding rod (411-2) and a first spring (411-3); the sliding rod (411-2) connects the pressing block (411-1) and the movable chamber (413); the first spring (411-3) is sleeved on the outer circumference of the sliding rod (411-2); and the pressing block (411-1) triggers a sealing ring release device through the sliding rod (411-2) when pressed.

4. The device for detecting the anti-permeability of concrete according to claim 3, characterized in that: The sealing ring release device is an electrically controlled telescopic assembly (415), comprising a pressure sensor (414), an electrically controlled drive component and a telescopic limit piece (415-2); the pressure sensor (414) is linked to a trigger rod (411-5); when the pressure reaches a threshold, the telescopic limit piece (415-2) is controlled to retract, thereby releasing the obstruction to the sealing ring.

5. The device for detecting the anti-permeability of concrete according to claim 3, characterized in that: The sealing ring release device is a mechanical limit plate assembly (416), comprising a trigger portion (416-1), a rotating rod (416-2) and a limit plate (416-3), wherein the trigger rod (411-5) presses the trigger portion (416-1) to rotate the trigger portion, thereby driving the limit plate (416-3) to retract into the return cavity (413-2) to release the sealing ring.

6. The device for detecting the anti-permeability of concrete according to claim 1, characterized in that: The opening diameter of the placement groove (412) formed on the inner wall of the detection tube (41) is smaller than the diameter of the sealing ring in its natural state, and the overall diameter of the placement groove (412) is larger than the diameter of the sealing ring in its natural state, so as to ensure that the sealing ring is tightly attached to the concrete and the inner wall of the detection tube (41) after rebounding.

7. The device for detecting the anti-permeability of concrete according to claim 1, characterized in that: The outer wall of the detection cylinder (41) is provided with a limiting groove (43) matching the limiting column (121), and the limiting groove (43) and the limiting hole (231) work together to ensure accurate alignment of the detection cylinder (41) and the detection platform (12).

8. The device for detecting the anti-permeability of concrete according to claim 1, characterized in that: The curvature of the alignment plate (3) is consistent with the curvature of the inner wall of the detection platform (12) and the inner wall of the detection tube (41), so as to form a continuous sealing surface in a vertical state.

9. The device for detecting concrete impermeability according to claim 1, characterized in that: The telescopic drive assembly (42) comprises an electric control or hydraulic drive device, the output end of which is connected to the upper detection body (4) to control the lifting speed and pressure of the detection cylinder (41).

10. The device for detecting concrete impermeability according to claim 1, characterized in that: The water injection port (13) is located at the center of the hollow area of ​​the testing platform (12) and is connected to an external water pump, and is used to apply water pressure to the concrete to test the anti-seepage performance.

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