CN214539145U

CN214539145U - Concrete impermeability instrument

Info

Publication number: CN214539145U
Application number: CN202120510652.5U
Authority: CN
Inventors: 宋智达; 高邢瑾瑜; 王鑫; 刘书娟
Original assignee: Tianjin Kexin Construction Engineering Testing Co ltd
Current assignee: Tianjin Kexin Construction Engineering Testing Co ltd
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-10-29
Anticipated expiration: 2031-03-10

Abstract

The utility model belongs to the technical field of concrete detection equipment and specifically relates to a concrete anti-permeability apparatus is related to, which comprises a bod, the examination die holder, examination mould and sealing washer, the organism level is placed, examination die holder rigid coupling in organism top, examination die holder is provided with a plurality ofly, examination mould one end is towards the direction extension formation flange of keeping away from examination mould, flange and examination die holder top butt, the sealing washer is located examination mould and examination between the die holder, the organism top is close to examination die holder department and is provided with fixed establishment, fixed establishment is provided with a plurality ofly, a plurality of fixed establishment centers on examination die holder interval distribution, fixed establishment includes fixed column and connecting plate, the fixed column rigid coupling is close to examination die holder department in the organism, the connecting plate cover is located on the fixed column and is connected with the fixed column rotation, the one end that the fixed column was kept away from to the connecting plate and the top surface butt of flange, the rigid coupling has the fixed subassembly that is used for fixed connection board on the fixed column. This application connecting plate and flange top surface butt will try the mould to be fixed in on the examination die holder, reach the effect that improves examination mould installation convenience.

Description

Concrete impermeability instrument

Technical Field

The application relates to the field of concrete detection equipment, in particular to a concrete impermeability instrument.

Background

The concrete impermeability tester is a detection device, is mainly used for detecting the impermeability of concrete and measuring the impermeability grade of concrete, and is widely used for measuring the air permeability of building materials and checking the quality.

The existing Chinese patent with reference to publication number CN205246494U discloses a concrete impermeability instrument, which comprises a machine body, a test die holder, a sealing ring and a test die for mounting a sample, wherein six test die holders are fixedly connected to the top of the machine body, the six test die holders are uniformly arranged at intervals, the test die holder is in a circular ring shape, six screw rods are fixedly connected to the top of the test die holder and are uniformly distributed at intervals, six mounting holes are formed in the bottom of the test die, the mounting holes penetrate through the bottom of the test die, the screw rods penetrate through the mounting holes, the bottom surface of a test mill is abutted to the top surface of the test mill holder, and the sealing ring is arranged between the test die holder and the test die. Firstly, the sealing ring is placed above the test die seat, then the test die is placed above the test die seat, the mounting hole is opposite to the screw rod, at the moment, the screw rod penetrates through the mounting hole, and finally the nut for fixing the test die is screwed.

In view of the above-mentioned related technologies, the inventor thinks that when fixing the test mold, it is necessary to adjust the position of the test mold, to make the mounting hole face the screw rod, to insert the screw rod into the mounting hole, and then to tighten the plurality of nuts to fix the test mold, which has a drawback of poor convenience in mounting the test mold.

SUMMERY OF THE UTILITY MODEL

In order to improve the convenience of examination mould installation, the application provides a concrete impermeability appearance.

The application provides a concrete impermeability appearance adopts following technical scheme:

the utility model provides a concrete anti-permeability apparatus, which comprises a bod, the examination die holder, examination mould and sealing washer, the organism level is placed, examination mould seat rigid coupling in the organism top, examination mould seat is provided with a plurality ofly, examination mould one end is towards the direction extension formation flange of keeping away from examination mould, flange and examination mould seat top butt, the sealing washer is located examination mould and examination between the mould seat, the organism top is close to examination die holder department and is provided with fixed establishment, fixed establishment is provided with a plurality ofly, a plurality of fixed establishment center on examination mould seat interval distribution, fixed establishment includes fixed column and connecting plate, the fixed column rigid coupling is close to examination die holder department in the organism, the connecting plate cover is located on the fixed column and is connected with the fixed column rotation, the one side butt that the examination die holder was kept away from to the one end and the flange that the fixed column was kept away from to the connecting plate, be provided with the fixed subassembly that is used for fixed connection board on the fixed connection board.

Through adopting above-mentioned technical scheme, when the installation is tried the mould, at first place the sealing washer in trying the mould seat top, will have the examination mould of flange one end to place in trying the mould seat top after that, the top butt of flange and examination mould seat, rotate the connecting plate to the direction that is close to the flange after that, the connecting plate keeps away from examination mould seat one side butt with the flange, the connecting plate will try the mould to be fixed in on trying the mould seat, need not screw the nut, installation time has been saved, it is convenient laborsaving to install, reach the purpose that improves examination mould installation convenience.

Optionally, the side of the connecting plate close to the convex disc is abutted to the convex disc, and the side is away from the edge of the connecting plate and is obliquely arranged towards the direction close to the convex disc.

Through adopting above-mentioned technical scheme, when trying the mould with the connecting plate is fixed, rotate the connecting plate towards the direction that is close to the protruding dish, the edge of connecting plate is earlier kept away from one side contact of trying the mould seat with the protruding dish, continue to rotate the connecting plate, the middle part of connecting plate and the protruding dish one side contact of trying the mould seat are kept away from, fixed column one end is kept away from to the connecting plate at last and all is located the protruding dish and keeps away from trying mould seat one side, because the edge is kept away from to the edge towards being close to the protruding dish direction slope, therefore the connecting plate is at the pivoted in-process, the connecting plate is gradually towards the direction extrusion protruding dish that is close to trying the mould seat, thereby make protruding dish and the inseparable butt of trying the mould seat, the leakproofness between protruding dish and the mould seat has been improved.

Optionally, the fixed subassembly includes the dead lever, first spring, fixed block and connecting rod, the one end rigid coupling of dead lever is kept away from examination die holder one side in the fixed column, first spring rigid coupling is close to connecting plate one side in the dead lever, the dead lever one end is kept away from in first spring to the fixed block rigid coupling, the connecting plate is close to fixed block one side and has seted up the spout, the fixed block is located the spout and with connecting plate sliding connection, the connecting rod rigid coupling is close to dead lever one side in the fixed block, the connecting rod is kept away from fixed block one end and is passed the dead lever and slide with the dead lever and be connected.

Through adopting above-mentioned technical scheme, when dismantling the connecting plate, to the direction pulling connecting rod of keeping away from the fixed column, first spring compression this moment, the fixed block removes along with the connecting rod and moves towards the direction of keeping away from the fixed column, and the fixed block breaks away from the spout, extracts the connecting plate from fixing to dismantle the connecting plate, improved the convenience of connecting plate installation.

Optionally, a clamping block is fixedly connected to one side, away from the first spring, of the fixed block, a clamping groove is formed in one end, away from the convex disc, of the connecting plate, and the clamping block is located in the clamping groove and clamped and fixed.

Through adopting above-mentioned technical scheme, when rotating the connecting plate and will trying the mould fixed, rotate the connecting plate towards the direction that is close to the flange, fixed block and fixture block are located the spout and slide along the spout this moment, just when the fixture block is to the draw-in groove, first spring extends, first spring promotes the fixed block and removes towards the direction that is close to the connecting plate, thereby make the fixture block insert in the draw-in groove, the fixture block is fixed with the connecting plate, reduce the probability that the connecting plate takes place to rotate and with the flange slippage under the exogenic action, the fixed stability of connecting plate has been improved.

Optionally, one end, far away from the fixed column, of the connecting plate is connected with a locking assembly, the locking assembly comprises a base plate, a second spring and a butt plate, the base plate is fixedly connected to one end, far away from the fixed column, of the connecting plate, the base plate is arranged at an interval with the convex disc, the second spring is fixedly connected to one side, close to the convex disc, of the base plate, the butt plate is fixedly connected to one end, far away from one side of the test mold base, of the second spring, and the butt plate and the convex disc are abutted to one side, far away from the test mold base.

Through adopting above-mentioned technical scheme, when the connecting plate when being close to the flange rotation, press the butt plate towards the direction of keeping away from the flange, the connecting plate is kept away from fixed column one end and is located the flange and keeps away from examination die holder one side after, the external force to the butt plate is cancelled, the second spring extends and promotes the butt plate towards the direction of being close to the flange afterwards, butt plate and flange contact, the second spring promotes butt plate and flange towards the direction of being close to examination die holder, further improves the leakproofness between examination mould and the examination die holder.

Optionally, a pull rod is fixedly connected to the abutting plate near the second spring, and one end of the pull rod, far away from the abutting plate, penetrates through the substrate and is connected with the substrate in a sliding manner.

Through adopting above-mentioned technical scheme, when fixed examination mould, to the direction pulling pull rod of keeping away from the convex disc, the convex disc is kept away from along with the removal of pull rod to the butt board this moment, when the butt board is located the convex disc and keeps away from examination die holder one side, the external force to the pull rod is cancelled, the second spring promotes butt board and convex disc towards the direction that is close to examination die holder, the pull rod slides with the base plate this moment and is connected, the pull rod is to the direction of second spring, reduce the degree that the second spring rocked, improve the stability that the second spring used.

Optionally, a supporting rod is fixedly connected to one side, away from the convex plate, of the fixing column, and one end, away from the fixing column, of the supporting rod is abutted to one side, close to the convex plate, of the connecting plate.

Through adopting above-mentioned technical scheme, when connecting plate and protruding dish contact, the protruding dish is pressed towards the direction that is close to the examination die holder to the connecting plate, and the protruding dish applys the thrust of keeping away from examination die holder direction to the connecting plate this moment, and the connecting plate is kept away from protruding dish one end and has towards the power that is close to the branch direction, and branch provides the holding power for the connecting plate, reduces the connecting plate and is close to the trend that protruding dish one end removed towards keeping away from the protruding dish direction, improves the stability that the connecting plate used.

Optionally, one side of the convex disc, which is far away from the test mold base, is detachably connected with a protection ring.

Through adopting above-mentioned technical scheme, when fixed examination mould, rotate the connecting plate towards the direction that is close to the protruding dish, the relative slip takes place with the guard circle contact and with the guard circle this moment, has frictional force between connecting plate and the guard circle, and guard circle and butt board all have wearing and tearing, and the guard circle has reduced the degree of wear of examination mould, has improved the protectiveness to the examination mould.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the fixing mechanism, the test die is fixed by rotating the connecting plate, so that the purpose of improving the convenience of test die installation is achieved;

2. the convex disc is pressed towards the direction close to the test die holder by arranging the locking assembly, so that the aim of further improving the sealing property between the test die and the test die holder is fulfilled;

3. through setting up the guard circle, reduced the degree of wear of convex disc, reached the purpose that improves the convex disc protectiveness.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present application;

FIG. 2 is a partial cross-sectional view highlighting the seal ring;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

fig. 4 is a partial structural view showing the connection plate in a highlighted manner.

Description of reference numerals: 1. a body; 11. a die testing base; 111. a first groove; 2. testing a mold; 21. a convex disc; 211. a second groove; 212. a slot; 3. a seal ring; 4. a fixing mechanism; 41. fixing a column; 411. a strut; 42. a connecting plate; 421. a chute; 422. a card slot; 43. a fixing assembly; 431. fixing the rod; 432. a first spring; 433. a fixed block; 4331. a clamping block; 434. a connecting rod; 5. a locking assembly; 51. a substrate; 52. a second spring; 53. a butt joint plate; 54. a pull rod; 6. a guard ring; 61. and (5) cutting.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a concrete impermeability appearance. Referring to fig. 1, a concrete anti-permeability apparatus includes organism 1, examination mould seat 11 and examination mould 2, 1 level of organism is placed, 11 rigid couplings of examination mould seat in 1 top of organism, examination mould seat 11 is provided with six, the even interval of six examination mould seats 11 sets up, the bottom surface and the 11 top surface butt of examination mould seat of examination mould 2, 1 top of organism is close to examination mould seat 11 department and is provided with fixed establishment 4 that is used for fixed examination mould 2, fixed establishment 4 will try mould 2 and the inseparable butt in top of examination mould seat 11, it is convenient laborsaving to install, reach the purpose that improves 2 installation convenience of examination mould.

Referring to fig. 2, a first groove 111 is formed in the top of the test mold base 11, the first groove 111 is annular, a seal ring 3 is placed in the first groove 111, the seal ring 3 is made of rubber, the seal ring 3 is abutted against the inner wall of the first groove 111, and the top of the seal ring 3 is higher than the top of the test mold base 11; 2 one end of examination mould is towards the direction of keeping away from examination mould 2 and is extended formation flange 21, and flange 21 is close to sealing washer 3 department and has seted up second recess 211, and second recess 211 is cyclic annularly, and flange 21 bottom surface and the top surface butt of examination grinding seat 11, and sealing washer 3 is located second recess 211. When the trial mill 2 is installed, the trial mold 2 with one end of the convex disc 21 is placed above the trial mold base 11, the top of the sealing ring 3 is located in the second groove 211, the sealing ring 3 is soft and fills a gap between the trial mold 2 and the trial mold base 11, and the sealing ring 3 improves the sealing performance between the trial mold base 11 and the trial mold 2.

Referring to fig. 2, the top surface of the protruding disc 21 is detachably connected with a protection ring 6, the protection ring 6 is made of rubber materials, the protection ring 6 is in a circular ring shape, one side of the protruding disc 21, which is close to the protection ring 6, is provided with an insertion slot 212, the insertion slot 212 is in a circular ring shape, the protection ring 6, which is close to the insertion slot 212, is fixedly connected with an insertion strip 61, and the insertion strip 61 is matched with the insertion slot 212; when the guard circle 6 is installed, the guard circle 6 is sleeved in from one end of the test mold 2 far away from the convex disc 21 and moves towards the direction close to the convex disc 21, the inserting strips 61 are inserted into the inserting grooves 212 to be fixed, the guard circle 6 is installed on the convex disc 21, and the guard circle 6 is convenient to disassemble and assemble.

Referring to fig. 3, six fixing mechanisms 4 are uniformly distributed around a single test die holder 11 at intervals, each fixing mechanism 4 comprises a fixing column 41, a connecting plate 42 and a fixing assembly 43, each fixing column 41 is cylindrical, each fixing column 41 is fixedly connected to the top of the machine body 1, and each connecting plate 42 is sleeved on each fixing column 41 and is rotatably connected with each fixing column 41; the fixing component 43 is fixedly connected to one side, away from the test die holder 11, of the fixing column 41, the fixing component 43 comprises a fixing rod 431, a first spring 432, a fixing block 433 and a connecting rod 434, one end of the fixing rod 431 is fixedly connected with the fixing column 41 and is arranged below the connecting plate 42, the other end of the fixing rod 431 is bent upwards to be located close to the connecting plate 42, the first spring 432 is horizontally arranged, one end of the first spring 432 is fixedly connected to one side, close to the connecting plate 42, of the fixing rod 431, and the fixing block 433 is fixedly connected to one end, away from the fixing rod 431, of the first spring 432; one side of the connecting plate 42, which is close to the fixing block 433, is arc-shaped and is provided with a sliding groove 421, and the fixing block 433 is positioned in the sliding groove 421 and is in sliding connection with the connecting plate 42; the connecting rod 434 is fixedly connected to the position, close to the first spring 432, of the fixed block 433, the connecting rod 434 is arranged in the first spring 432, one end, far away from the fixed block 433, of the connecting rod 434 penetrates through the fixed rod 431 and is connected with the fixed rod 431 in a sliding mode, and one end, far away from the fixed column 41, of the connecting plate 42 is abutted to the top surface of the guard ring 6.

When the test mold 2 is fixed, the connecting plate 42 is rotated towards the direction close to the protective ring 6, the fixing block 433 is positioned in the sliding groove 421 to slide, the fixing block 433 limits the connecting plate 42 in the vertical direction, so that the relative displacement between the connecting plate 42 and the fixing block 41 in the vertical direction is reduced, then one end, far away from the fixing column 41, of the connecting plate 42 rotates to the top surface of the protective ring 6 and slides relative to the protective ring 6, the connecting plate 42 presses the test mold 2 downwards, and therefore the test mold 2 is fixed on the test mold base 11, nuts do not need to be screwed, the mounting time is saved, the mounting is convenient and labor-saving, and the purpose of improving the mounting convenience of the test mold 2 is achieved; when the connecting plate 42 is replaced, the connecting rod 434 is pulled towards the direction far away from the fixed column 41, the connecting rod 434 drives the fixed block 433 to move towards the direction far away from the fixed column 41, so that the fixed block 433 is separated from the connecting plate 42, the connecting plate 42 moves upwards, the connecting plate 42 is separated from the fixed column 41, and the dismounting and the replacement are convenient.

Referring to fig. 4, the bottom surface of the link plate 42 abuts against the protection ring 6, and the link plate 42 is disposed obliquely downward in the rotation direction. When fixing examination mould 2 with connecting plate 42, connecting plate 42 is rotated towards the direction that is close to guard circle 6, the edge of connecting plate 42 earlier with guard circle 6 keep away from the one side contact of flange 21, continue to rotate connecting plate 42, the middle part and the contact of guard circle 6 top of connecting plate 42, connecting plate 42 keeps away from fixed column 41 one end at last and all is located the guard circle 6 top, because connecting plate 42 sets up along rotating direction downtilt, consequently, connecting plate 42 is at the pivoted in-process, connecting plate 42 extrudees flange 21 downwards gradually, thereby make flange 21 and the inseparable butt of examination mould seat 11, the leakproofness between flange 21 and the examination mould seat 11 has been improved.

Referring to fig. 2, a clamping block 4331 is fixedly connected to a side of the fixing block 433 away from the first spring 432, a clamping groove 422 is formed at an end of the connecting plate 42 away from the protruding disc 21, and the clamping block 4331 is positioned in the clamping groove 422 for clamping and fixing. When the connecting plate 42 rotates to the position above the protective ring 6 and the clamping block 4331 is opposite to the clamping groove 422, the first spring 432 extends, the first spring 432 pushes the fixing block 433 to move towards the direction close to the connecting plate 42, so that the clamping block 4331 is inserted into the clamping groove 422, the clamping block 4331 fixes the connecting plate 42, the probability that the connecting plate 42 rotates and slips off the convex disc 21 under the action of external force is reduced, and the fixing stability of the connecting plate 42 is improved.

Referring to fig. 3, one end of the connecting plate 42, which is away from the fixing column 41, is connected with a locking assembly 5, the locking assembly 5 includes a base plate 51, a second spring 52, a supporting plate 53 and a pull rod 54, the base plate 51 is fixedly connected to one end of the connecting plate 42, which is away from the fixing column 41, the base plate 51 is located above the guard ring 6 and has a gap, the second spring 52 is vertically disposed, the second spring 52 is fixedly connected to one side of the base plate 51, which is close to the protruding disc 21, the supporting plate 53 is fixedly connected to one end of the second spring 52, which is away from the base plate 51, the pull rod 54 is fixedly connected to one side of the supporting plate 53, which is close to the second spring 52, the pull rod 54 is disposed in the second spring 52, and one end of the pull rod 54, which is away from the supporting plate 53, passes through the base plate 51 and is connected to the base plate 51 in a sliding manner. When the connecting plate 42 rotates towards the direction close to the convex disc 21, the pull rod 54 is pulled towards the direction far away from the convex disc 21, the pull rod 54 drives the abutting plate 53 to move above the protective ring 6, then when the connecting plate 42 rotates to the position above the protective ring 6, the external force to the pull rod 54 is cancelled, the second spring 52 extends and pushes the abutting plate 53 towards the direction close to the protective ring 6, the pull rod 54 vertically slides relative to the base plate 51, the abutting plate 53 is in contact with the top surface of the protective ring 6, the locking assembly 5 pushes the convex disc 21 towards the direction close to the test die holder 11, and the sealing performance between the test die 2 and the test die holder 11 is further improved.

Referring to fig. 3, a supporting rod 411 is fixedly connected to a side of the fixing column 41 away from the flange 21, and one end of the supporting rod 411 away from the fixing column 41 abuts against a bottom surface of the connecting plate 42. When the connecting plate 42 is in contact with the protective ring 6, the connecting plate 42 presses the convex disc 21 towards the direction close to the test die holder 11, at the moment, the convex disc 21 applies a pushing force to the connecting plate 42 towards the direction away from the test die holder 11, the end, far away from the convex disc 21, of the connecting plate 42 has a force towards the direction close to the supporting rod 411, the supporting rod 411 provides a supporting force for the connecting plate 42, the tendency that the end, close to the convex disc 21, of the connecting plate 42 moves towards the direction far away from the convex disc 21 is reduced, and the use stability of the connecting plate 42 is improved.

The implementation principle of the concrete impermeability instrument of the embodiment of the application is as follows: when the test die 2 is installed, firstly, the sealing ring 3 is placed in the first groove 111 of the test die holder 11, then the test die 2 with one end of the convex disc 21 is placed above the test die holder 11, the top of the sealing ring 3 is placed in the second groove 211 of the convex disc 21, the convex disc 21 is abutted to the top of the test die holder 11, then the connecting plate 42 is rotated towards the direction close to the convex disc 21, the bottom surface of the connecting plate 42 is abutted to the top surface of the convex disc 21 and pushes the convex disc 21 towards the direction close to the test die holder 11, the test die 2 is fixed on the test die holder 11 by the connecting plate 42, the nut does not need to be screwed, the installation time is saved, the installation is convenient and labor-saving, and the purpose of improving the installation convenience of the test die 2 is achieved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a concrete anti-permeability apparatus, includes organism (1), examination mould seat (11), examination mould (2) and sealing washer (3), organism (1) level is placed, examination mould seat (11) rigid coupling in organism (1) top, examination mould seat (11) are provided with a plurality ofly, examination mould (2) one end is extended towards the direction of keeping away from examination mould (2) and is formed flange (21), flange (21) and examination mould seat (11) top butt, sealing washer (3) are located between examination mould (2) and examination mould seat (11), its characterized in that: organism (1) top is close to examination die holder (11) department and is provided with fixed establishment (4), fixed establishment (4) are provided with a plurality ofly, a plurality of fixed establishment (4) are around examination die holder (11) interval distribution, fixed establishment (4) include fixed column (41) and connecting plate (42), fixed column (41) rigid coupling is close to examination die holder (11) department in organism (1), connecting plate (42) cover is located on fixed column (41) and is rotated with fixed column (41) and be connected, one end that fixed column (41) were kept away from in connecting plate (42) and protruding dish (21) keep away from one side butt of examination die holder (11), be provided with fixed subassembly (43) that are used for fixed connection board (42) on fixed column (41).

2. The concrete impermeability instrument of claim 1, wherein: the side face of the connecting plate (42) close to the convex disc (21) is abutted against the convex disc (21), and the side face is far away from the edge of the connecting plate (42) and is obliquely arranged towards the direction close to the convex disc (21).

3. The concrete impermeability instrument of claim 1, wherein: fixed subassembly (43) include dead lever (431), first spring (432), fixed block (433) and connecting rod (434), the one end rigid coupling of dead lever (431) is kept away from examination die holder (11) one side in fixed column (41), first spring (432) rigid coupling is close to connecting plate (42) one side in dead lever (431), dead lever (431) one end is kept away from in first spring (432) fixed block (433) rigid coupling, spout (421) have been seted up near fixed block (433) one side in connecting plate (42), fixed block (433) are located spout (421) and with connecting plate (42) sliding connection, connecting rod (434) rigid coupling is close to dead lever (431) one side in fixed block (433), fixed block (433) one end is kept away from in connecting rod (434) and is passed dead lever (431) and is slided with dead lever (431) and is connected.

4. A concrete impermeability instrument according to claim 3, wherein: one side, far away from the first spring (432), of the fixing block (433) is fixedly connected with a clamping block (4331), one end, far away from the convex disc (21), of the connecting plate (42) is provided with a clamping groove (422), and the clamping block (4331) is positioned in the clamping groove (422) and is clamped and fixed.

5. The concrete impermeability instrument of claim 1, wherein: the connecting plate (42) is kept away from fixed column (41) one end and is connected with locking Assembly (5), locking Assembly (5) include base plate (51), second spring (52) and butt plate (53), fixed column (41) one end is kept away from in connecting plate (42) base plate (51) and flange (21) interval setting, second spring (52) rigid coupling is close to flange (21) one side in base plate (51), butt plate (53) rigid coupling is kept away from base plate (51) one end in second spring (52), butt plate (53) and flange (21) keep away from examination die holder (11) one side butt.

6. The concrete impermeability instrument of claim 5, wherein: a pull rod (54) is fixedly connected to the position, close to the second spring (52), of the abutting plate (53), and one end, far away from the abutting plate (53), of the pull rod (54) penetrates through the base plate (51) and is connected with the base plate (51) in a sliding mode.

7. The concrete impermeability instrument of claim 1, wherein: one side, far away from the convex disc (21), of the fixing column (41) is fixedly connected with a supporting rod (411), and one end, far away from the fixing column (41), of the supporting rod (411 is abutted to one side, close to the convex disc (21), of the connecting plate (42).

8. The concrete impermeability instrument of claim 1, wherein: one side of the convex disc (21) far away from the test die holder (11) is detachably connected with a protection ring (6).