CN218865550U

CN218865550U - Concrete detection is with getting core equipment

Info

Publication number: CN218865550U
Application number: CN202223130886.0U
Authority: CN
Inventors: 张军花; 靳军; 范智越; 王龙; 李舒婷
Original assignee: Anhui Xintongji Highway Engineering Testing And Testing Co ltd
Current assignee: Anhui Xintongji Highway Engineering Testing And Testing Co ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-04-14
Anticipated expiration: 2032-11-24

Abstract

The utility model relates to a concrete coring equipment technical field specifically is a concrete inspection is with coring equipment, including the bottom plate, fixed mounting has the support on the roof of bottom plate, and fixed mounting has the hydraulic stem on the diapire of support, and fixed mounting has the mounting panel on the output of hydraulic stem, and fixed mounting has the motor on the roof of mounting panel, seted up on the roof of mounting panel with motor output complex mounting hole, the hollow drill bit with motor output fixed connection is installed in the mounting hole rotation. The utility model discloses a set up the arc, the in-process that removes at first push rod drives the arc and removes and make and be in airtight state in the hollow drill all the time, prevents that water from flowing through the spout and causing the water waste to and the water pressure in the increase hollow drill and then accelerate the water velocity of hollow drill and concrete friction surface, promptly for the effect of having accelerated the cooling to the hollow drill through rivers, prevent that the hollow drill high temperature and damage.

Description

Concrete detection is with getting core equipment

Technical Field

The utility model relates to a concrete coring equipment technical field specifically is a concrete inspection is with coring equipment.

Background

Concrete is a very common building material in our lives, is widely applied to the technical fields of building construction, road paving and the like, a sample of the concrete needs to be checked before the concrete is used, whether the concrete can meet the construction requirements is determined, and a main movement mode is to use a concrete core drilling machine to take out a sample core with a specific size from a large concrete sample for detection.

Chinese patent with publication number CN217276985U discloses a core drilling device for detecting concrete strength, which can stop overflowed water on the outer surface of a drill cylinder through the action of a rubber sleeve, increase the contact area between the surface of the rotary cylinder and the water and further accelerate the heat dissipation of the rotary cylinder, and meanwhile, the overflowed water can also treat dust.

In the process of implementing the above patent, although the heat dissipation of the drum and the dust treatment can be accelerated, the following problems still remain unsolved: part of water and dust can flow to the external world through the gap between stock and the rotary drum, cause water waste to and can lead to water pressure to reduce, can not make water flow to the rotary drum bottom fast and the contact of drill bit, reduced the thermal diffusivity of drill bit, can lead to the drill bit to damage.

Therefore, the coring equipment for the concrete detection is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a concrete inspection is with getting core equipment is in encapsulated situation in making hollow bit through setting up the arc to solve the problem that proposes among the above-mentioned background.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a concrete inspection is with coring equipment, comprising a base plate, fixed mounting has the support on the roof of bottom plate, fixed mounting has the hydraulic stem on the diapire of support, fixed mounting has the mounting panel on the output of hydraulic stem, fixed mounting has the motor on the roof of mounting panel, set up on the roof of mounting panel with motor output complex mounting hole, install the hollow drill bit with motor output fixed connection in the mounting hole rotation, set up annular basin on the lateral wall of mounting hole, set up on the hollow drill bit with basin complex water inlet, set up on the roof of bottom plate with hollow drill bit complex turn round, fixed mounting has the water tank on the roof of bottom plate, fixed mounting has the water pump on the roof of water tank, fixed mounting has the drain pipe with hollow drill bit complex on the output of water pump, the drain pipe keeps away from the one end and the basin intercommunication of water tank, the spout has been seted up to vertical symmetry on the lateral wall of hollow drill bit, common slidable mounting has first push rod in two spouts, fixed mounting has the connecting rod with hollow drill bit complex on the diapire of first push rod, the roof of first push rod and the vertical fixed mounting of symmetry have the arc with the laminating with the hollow drill bit inner wall.

Preferably, the side wall of the bracket is symmetrically and fixedly provided with second push rods matched with the first push rods.

Preferably, the lateral wall of the hollow drill bit is sleeved with a first elastic cushion matched with the sliding groove, the top end and the bottom end of the first elastic cushion are fixedly connected with the lateral wall of the hollow drill bit, a first cavity and a second cavity are formed in the first elastic cushion, the first cavity is located between a first push rod and the top end of the hollow drill bit, the second cavity is located between the first push rod and the bottom end of the hollow drill bit, a first exhaust valve is fixedly inserted into the lateral wall of the first cavity close to one side of the sliding groove, a first air inlet valve is inserted into the lateral wall of the first cavity far away from one side of the sliding groove, a second exhaust valve is fixedly inserted into the lateral wall of the second cavity close to one side of the sliding groove, and a second air inlet valve is inserted into the lateral wall of the second cavity far away from one side of the sliding groove.

Preferably, the installation disc is fixedly installed at the position, below the first elastic cushion, on the side wall of the hollow drill bit, the first protection barrel is rotatably installed on the installation disc, the installation groove is formed in the bottom wall of the first protection barrel, the second protection barrel is slidably installed in the installation groove, the spring is fixedly installed between the top wall of the second protection barrel and the top wall of the installation groove, and the first protection barrel and the second protection barrel are movably sleeved outside the hollow drill bit.

Preferably, a second elastic cushion is fixedly mounted on the bottom wall of the second protective cylinder, a groove is formed in the bottom wall of the second elastic cushion, and an elastic membrane is fixedly mounted in the groove.

Preferably, demountable installation drainage box on the lateral wall of first protection section of thick bamboo inserts on the lateral wall of drainage box and is equipped with the communicating pipe that extends to in the first protection section of thick bamboo, and fixed mounting has the collection box on the roof of bottom plate, and fixed the inserting is equipped with the inlet tube that communicates with drainage box on the lateral wall of collection box.

Preferably, a filter plate is fixedly arranged in the drainage box and is positioned above the communicating pipe.

Preferably, the bottom wall and the top wall of the arc-shaped plate are respectively and fixedly provided with a sealing gasket.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through setting up the arc, the in-process that removes at first push rod drives the arc and removes and make and be in airtight state in the hollow drill all the time, prevents that water from causing the water waste through the spout outflow to and the water pressure in the increase hollow drill and then accelerate the rivers speed of hollow drill and concrete friction surface, promptly through rivers accelerated the effect to the cooling of hollow drill, prevent that the hollow drill high temperature from damaging, played the effect of protection hollow drill.

2. Through setting up spring, second protection section of thick bamboo and second cushion, carry out the in-process of concrete sample at hollow drill bit, the spring passes through the second protection section of thick bamboo and applys decurrent elasticity to the second cushion, makes the second cushion closely laminate and form closed area with ground, makes water stay on hollow drill bit's surface, has increased water and hollow drill bit's area of contact and then has accelerated hollow drill bit's heat dissipation, has played the radiating effect of accelerating hollow drill bit.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is an enlarged view of the section A of FIG. 1 according to the present invention;

FIG. 3 is a cross-sectional view of the hollow drill of the present invention;

fig. 4 is an enlarged view of the utility model at B in fig. 3;

fig. 5 is an enlarged view of the present invention at C in fig. 3;

fig. 6 is an enlarged view of fig. 3D according to the present invention;

fig. 7 is an enlarged view of the utility model at E in fig. 3;

fig. 8 is a schematic view of the assembly of the mounting plate, the hollow drill and the motor according to the present invention.

In the figure: 1. a base plate; 2. a support; 3. a hydraulic rod; 4. mounting a plate; 5. a motor; 6. mounting holes; 7. a hollow drill bit; 8. turning the opening; 9. a water tank; 10. a water pump; 11. a drain pipe; 12. a chute; 13. a first push rod; 14. a connecting rod; 15. an arc-shaped plate; 16. a second push rod; 17. a first elastic pad; 18. a first cavity; 19. a second cavity; 20. a first exhaust valve; 21. a first intake valve; 22. a second exhaust valve; 23. a second intake valve; 24. installing a disc; 25. a first protective cylinder; 26. a second protective cylinder; 27. a spring; 28. a second elastic pad; 29. a trench; 30. an elastic film; 31. a drain box; 32. a communicating pipe; 33. a filter plate; 34. a water inlet pipe; 35. a recycling bin; 36. a water inlet; 37. a gasket; 38. a water tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 8, the present invention provides a technical solution:

the utility model provides a concrete inspection is with coring equipment, comprising a base plate 1, fixed mounting has support 2 on the roof of bottom plate 1, fixed mounting has hydraulic stem 3 on the diapire of support 2, fixed mounting has mounting panel 4 on the output of hydraulic stem 3, fixed mounting has motor 5 on the roof of mounting panel 4, set up on the roof of mounting panel 4 with motor 5 output complex mounting hole 6, hollow drill 7 with motor 5 output fixed connection is installed to the internal rotation of mounting hole 6, annular basin 38 has been seted up on the lateral wall of mounting hole 6, set up on hollow drill 7 with basin 38 complex water inlet 36, set up on the roof of bottom plate 1 with hollow drill 7 complex turn-around 8, fixed mounting has water tank 9 on the roof of bottom plate 1, fixed mounting has water pump 10 on the roof of water tank 9, fixed mounting has on the output of water pump 10 with hollow drill 7 complex drain pipe 11, the one end that water tank 9 was kept away from to drain pipe 11 communicates with basin 38, spout 12 has been seted up to vertical symmetry on the lateral wall of hollow drill 7, common slidable mounting has first push rod 13 in two spouts 12, fixed mounting has with hollow drill 7 complex connecting rod 14 on the diapire of first push rod 13, the inner wall of diapire 13 and the fixed mounting has the inner wall 15 of hollow drill 15 with the laminating of hollow drill 15.

And a second push rod 16 matched with the first push rod 13 is symmetrically and fixedly arranged on the side wall of the bracket 2.

When the water pump is used, the motor 5 is started firstly, the hollow drill bit 7 is driven to rotate through the output end of the motor 5, meanwhile, the output end of the hydraulic rod 3 extends and drives the hollow drill bit 7 to be in contact with the ground through the mounting plate 4, the water in the water tank 9 is pumped out by the water pump 10 when the hollow drill bit 7 is in contact with the ground, the water passes through the drain pipe 11, the water tank 38 and the water inlet 36 to flow to the hollow drill bit 7, in the sampling process of the hollow drill bit 7, the sliding chute 12 is always in a sealing state under the action of the arc-shaped plate 15, water waste caused by outflow of the water in the hollow drill bit 7 through the sliding chute 12 can be prevented, in the sealing state, along with the increase of the water quantity, the pressure in the hollow drill bit 7 is increased gradually, the speed of the water flowing to the bottom of the hollow drill bit 7 is increased, namely, the water flowing speed of the hollow drill bit 7 and the contact surface of concrete is increased, the cooling effect on the hollow drill bit 7 is improved, and the effect of protecting the hollow drill bit 7 is achieved.

In the process that the hollow drill bit 7 samples downwards, the sampled concrete applies thrust to the connecting rod 14, at the moment, the connecting rod 14 drives the first push rod 13 to move upwards, and the first push rod 13 gradually moves to the top of the sliding groove 12; after the hollow drill bit 7 finishes sampling, the output end of the hydraulic rod 3 contracts and drives the hollow drill bit 7 to reset through the mounting plate 4, in the resetting process of the hollow drill bit 7, the hollow drill bit 7 drives the first push rod 13 to move upwards, after the hollow drill bit 7 is separated from and contacted with the concrete ground, the first push rod 13 is contacted with the second push rod 16 at the moment, the hollow drill bit 7 continues to drive the first push rod 13 to move upwards, the first push rod 13 applies thrust to the second push rod 16 at the moment, under the action of a reaction force, the second push rod 16 applies downward thrust to the first push rod 13, then under the action of the thrust of the second push rod 16, the first push rod 13 downwards pushes the concrete sample inside the hollow drill bit 7 through the connecting rod 14 and gradually separates the concrete sample from and contacts with the hollow drill bit 7, the later-stage taking-out is not needed, and the work load of workers is reduced.

As an embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 7, the cover is equipped with the first elastic cushion 17 with chute 12 complex on the lateral wall of hollow drill bit 7, the top and the bottom of first elastic cushion 17 all with the lateral wall fixed connection of hollow drill bit 7, first cavity 18 and second cavity 19 have been seted up on the first elastic cushion 17, just first cavity 18 is located between first push rod 13 and the top of hollow drill bit 7, just second cavity 19 is located between first push rod 13 and the bottom of hollow drill bit 7, first cavity 18 is close to and is fixed to be inserted on the lateral wall of chute 12 one side and is equipped with first exhaust valve 20, first cavity 18 is far away from to insert on the lateral wall of chute 12 one side and is equipped with first admission valve 21, second cavity 19 is close to be fixed to be inserted on the lateral wall of chute 12 one side and is equipped with second exhaust valve 22, and second cavity 19 is far away from inserting on the lateral wall of chute 12 one side and is equipped with second admission valve 23.

In the sampling process of the hollow drill bit 7, the connecting rod 14 is in contact with the top wall of the concrete sample and is pushed by the concrete sample, the connecting rod 14 drives the first push rod 13 to move upwards along the sliding groove 12, at the moment, the part, below the connecting rod 14, of the first elastic cushion 17 is stretched, the first cavity 18 sucks air from the outside through the first air inlet valve 21, meanwhile, the first elastic cushion 17 above the connecting rod 14 is compressed, air in the second cavity 19 is compressed and discharged through the second air outlet valve 22, when silt is attached to the surface of the connection part of the arc-shaped plate 15 and the hollow drill bit 7, the air in the second cavity 19 flows to the gap between the arc-shaped plate 15 and the hollow drill bit 7 through the second air outlet valve 22 and blows the silt, and then the silt is separated from the gap; when first push rod 13 drives connecting rod 14 and promotes the in-process of concrete sample downwards, first cushion 17 above first push rod 13 is stretched, second cavity 19 inhales from the external world through second admission valve 23, first cushion 17 of first push rod 13 below is compressed, the gas of first cavity 18 is compressed and has the discharge through first exhaust valve 20, when silt is attached to the surface at arc 15 and hollow drill bit 7 junction, the gas in first cavity 18 flows to the space and blows silt through first exhaust valve 20 this moment, make silt and space break away from the contact, prevent that the gap between arc 15 and the hollow drill bit 7 from getting into silt and having reduced the degree of wear of arc 15, confirm the leakproofness in hollow drill bit 7, prevent that the inside water of hollow drill bit 7 from leaking, the effect that cold water in the hollow drill bit 7 can flow to hollow drill bit 7 bottom fast has been played.

As an embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 3, fig. 5, and fig. 6, a mounting plate 24 is fixedly installed at a position below the first elastic cushion 17 on the side wall of the hollow drill 7, a first protection tube 25 is installed on the mounting plate 24 in a rotating manner, a mounting groove is opened on the bottom wall of the first protection tube 25, a second protection tube 26 is slidably installed in the mounting groove, a spring 27 is fixedly installed between the top wall of the second protection tube 26 and the top wall of the mounting groove, and the first protection tube 25 and the second protection tube 26 are movably sleeved outside the hollow drill 7.

A second elastic pad 28 is fixedly mounted on the bottom wall of the second protective cylinder 26, a groove 29 is formed on the bottom wall of the second elastic pad 28, and an elastic membrane 30 is fixedly mounted in the groove 29.

In the initial state, under the action of the spring 27, the second protection cylinder 26 extends out of the mounting groove on the first protection cylinder 25; in the process that the mounting plate 4 drives the hollow drill bit 7 to move downwards for sampling, the hollow drill bit 7 drives the first protective cylinder 25 to move downwards through the mounting plate 24, the second protective cylinder 26 drives the second elastic cushion 28 to move downwards in the process that the first protective cylinder 25 moves downwards, after the second elastic cushion 28 is contacted with the concrete surface, the second elastic cushion 28 is pushed upwards by the concrete, the second elastic cushion 28 pushes the second protective cylinder 26 to move upwards along the mounting groove under the action of the upward pushing force of the concrete, and the spring 27 is extruded and has a restoring trend in the process that the second protective cylinder 26 moves upwards; meanwhile, the second elastic cushion 28 receives downward thrust of the spring 27 through the second protective barrel 26, and the second elastic cushion 28 is tightly attached to the ground under the elastic action of the spring 27 and the elasticity of the second elastic cushion, so that a closed area is formed, moisture can be guaranteed to be gathered on the surface of the hollow drill bit 7, sewage can be prevented from splashing to a user, and when the ground is uneven, moisture can be prevented from flowing away, so that the effect of improving the heat dissipation effect on the hollow drill bit 7 is achieved.

Meanwhile, because a lot of gravels are always arranged on the concrete surface of a construction site, when the second elastic cushion 28 is in contact with the concrete surface, the gravels extrude the second elastic cushion 28, the air pressure in the groove 29 is increased, the elastic membrane 30 expands and is tightly attached to the surface of the gravels under the action of pressure, water can be prevented from flowing out through the gap between the gravels and the second elastic cushion 28, and the utilization rate of moisture is improved.

As an embodiment of the present invention, as shown in fig. 1, fig. 3 and fig. 5, the water discharging box 31 is detachably mounted on the side wall of the first protection tube 25, the communicating tube 32 extending into the first protection tube 25 is inserted into the side wall of the water discharging box 31, the top wall of the bottom plate 1 is fixedly mounted with the recycling box 35, and the side wall of the recycling box 35 is fixedly inserted with the water inlet tube 34 communicating with the water discharging box 31.

A filter plate 33 is fixedly installed in the drain box 31, and the filter plate 33 is positioned above the communication pipe 32.

In-process at hollow bit 7 sample, water flows to second cushion 28 through the gap between hollow bit 7 and the concrete sample, second protection section of thick bamboo 26, the space between first protection section of thick bamboo 25 and the hollow bit 7 surface, and the liquid level in this gap risees gradually, when the liquid level is in same horizontal plane with communicating pipe 32, rivers flow into through communicating pipe 32 in the drainage box 31, then the liquid level in the drainage box 31 rises to the top of filter 33 gradually, finally flow to collection box 35 through inlet tube 34, thereby can be to second cushion 28, second protection section of thick bamboo 26, the water resource of the space between first protection section of thick bamboo 25 and the hollow bit 7 surface carries out recycle, the effect of water economy resource has been played.

As an embodiment of the present invention, as shown in fig. 7, a sealing gasket 37 is fixedly mounted on the bottom wall and the top wall of the arc plate 15, respectively.

In-process that first push rod 13 drove arc 15 and reciprocate, can reduce the probability in the gap that silt got into between arc 15 and the core bit 7 through setting up sealed 37 to reduce the frictional force that the arc 15 received when removing along the inner wall of core bit 7, played the effect of protection arc 15.

The working principle is as follows: when the device is used, the motor 5 is started firstly, the hollow drill bit 7 is driven to rotate through the output end of the motor 5, meanwhile, the output end of the hydraulic rod 3 extends and drives the hollow drill bit 7 to be in contact with the concrete ground through the mounting plate 4, the water in the water tank 9 is pumped out by the water pump 10 while the hollow drill bit 7 is in contact with the ground, the water flows to the hollow drill bit 7 through the water discharge pipe 11, the water tank 38 and the water inlet 36, and the sliding groove 12 is always in a sealing state under the action of the arc-shaped plate 15 in the sampling process of the hollow drill bit 7; in the process that the mounting plate 4 drives the hollow drill bit 7 to move downwards for sampling, the hollow drill bit 7 drives the first protective cylinder 25 to move downwards through the mounting plate 24, the second protective cylinder 26 drives the second elastic cushion 28 to move downwards in the process that the first protective cylinder 25 moves downwards, after the second elastic cushion 28 is contacted with the concrete surface, the second elastic cushion 28 is subjected to upward thrust of the concrete, the second elastic cushion 28 pushes the second protective cylinder 26 to move upwards along the mounting groove under the action of the upward thrust of the concrete, and the spring 27 is extruded and has a restoring trend in the process that the second protective cylinder 26 moves upwards; meanwhile, the second elastic cushion 28 is pushed downwards by the spring 27 through the second protection cylinder 26, and under the action of the elasticity and the elasticity of the spring 27, the second elastic cushion 28 is tightly attached to the ground to form a closed area; meanwhile, since a lot of gravels are always on the concrete surface of the construction site, when the second elastic cushion 28 is in contact with the concrete surface, the gravels press the second elastic cushion 28, the air pressure in the groove 29 is increased, and the elastic membrane 30 is expanded and tightly attached to the surface of the gravels under the action of the pressure.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a concrete inspection is with coring equipment, includes bottom plate (1), its characterized in that: the water pump is characterized in that a support (2) is fixedly mounted on the top wall of the bottom plate (1), a hydraulic rod (3) is fixedly mounted on the bottom wall of the support (2), a mounting plate (4) is fixedly mounted on the output end of the hydraulic rod (3), a motor (5) is fixedly mounted on the top wall of the mounting plate (4), a mounting hole (6) matched with the output end of the motor (5) is formed in the top wall of the mounting plate (4), a hollow drill bit (7) fixedly connected with the output end of the motor (5) is rotatably mounted in the mounting hole (6), an annular water tank (38) is formed in the side wall of the mounting hole (6), a water inlet (36) matched with the water tank (38) is formed in the hollow drill bit (7), a rotary opening (8) matched with the hollow drill bit (7) is formed in the top wall of the bottom plate (1), a water tank (9) is fixedly mounted on the top wall of the bottom plate (1), a water pump (10) is fixedly mounted on the top wall of the water tank (9), a water pump (10) is fixedly mounted on the output end of the water pump (10), a water drain pipe (11) is symmetrically communicated with the water tank (7), and a water chute (12) is formed in the hollow drill bit (7), two common slidable mounting has first push rod (13) in spout (12), fixed mounting has connecting rod (14) with hollow drill bit (7) complex on the diapire of first push rod (13), the vertical fixed mounting of symmetry has arc (15) with the laminating of hollow drill bit (7) inner wall on the roof of first push rod (13) and the diapire.

2. The coring apparatus for concrete inspection as set forth in claim 1, wherein: and second push rods (16) matched with the first push rods (13) are symmetrically and fixedly installed on the side wall of the support (2).

3. The coring apparatus for concrete inspection as set forth in claim 2, wherein: the utility model discloses a pneumatic drill, including hollow drill (7), spout (12) and first cushion (17) of complex is overlapped on the lateral wall of hollow drill (7), the top and the bottom of first cushion (17) all with the lateral wall fixed connection of hollow drill (7), first cavity (18) and second cavity (19) have been seted up on first cushion (17), just first cavity (18) are located between first push rod (13) and hollow drill (7) top, just second cavity (19) are located between first push rod (13) and hollow drill (7) bottom, fixed the inserting is equipped with first discharge valve (20) on the lateral wall that first cavity (18) are close to spout (12) one side, first cavity (18) are kept away from and are equipped with first admission valve (21) on the lateral wall of spout (12) one side, fixed the inserting is equipped with second discharge valve (22) on the lateral wall that second cavity (19) are close to spout (12) one side, insert on the lateral wall that second cavity (19) are kept away from spout (12) one side and are equipped with second admission valve (23).

4. A coring apparatus for concrete inspection as set forth in claim 3, wherein: the utility model discloses a hollow drill bit, including hollow drill bit (7), the position fixed mounting that is located first cushion (17) below on the lateral wall of hollow drill bit (7) has mounting disc (24), it installs first protection section of thick bamboo (25) to rotate on mounting disc (24), the mounting groove has been seted up on the diapire of first protection section of thick bamboo (25), slidable mounting has second protection section of thick bamboo (26) in the mounting groove, fixed mounting has spring (27) between the roof of second protection section of thick bamboo (26) and the roof of mounting groove, just first protection section of thick bamboo (25) and second protection section of thick bamboo (26) equal movable sleeve establish the outside at hollow drill bit (7).

5. The coring apparatus for concrete inspection as set forth in claim 4, wherein: a second elastic pad (28) is fixedly mounted on the bottom wall of the second protective barrel (26), a groove (29) is formed in the bottom wall of the second elastic pad (28), and an elastic membrane (30) is fixedly mounted in the groove (29).

6. The coring apparatus for concrete inspection according to claim 5, wherein: demountable installation drains box (31) on the lateral wall of first protective barrel (25), it is equipped with communicating pipe (32) that extend to in first protective barrel (25) to insert on the lateral wall of drainage box (31), fixed mounting has collection box (35) on the roof of bottom plate (1), fixed inserting is equipped with inlet tube (34) with drainage box (31) intercommunication on the lateral wall of collection box (35).

7. The coring apparatus for concrete inspection as set forth in claim 6, wherein: a filter plate (33) is fixedly arranged in the drainage box (31), and the filter plate (33) is positioned above the communicating pipe (32).

8. The coring apparatus for concrete inspection according to claim 7, wherein: and sealing gaskets (37) are respectively fixedly arranged on the bottom wall and the top wall of the arc-shaped plate (15).