CN214738312U - Survey drill bit and pile foundation detection device - Google Patents

Abstract

The application relates to a survey drill bit and pile foundation detection device, which comprises a detection drill bit and a detector, wherein the detection drill bit comprises a conical drill bit, a first pipe fitting and a second pipe fitting; the detector comprises a first pipe fitting, a second pipe fitting, a third pipe fitting, a fourth pipe fitting, a fifth pipe fitting, a sixth pipe fitting and a sixth pipe fitting, wherein the outer peripheral surface of the first pipe fitting is provided with a first chute, the first pipe fitting is provided with a limiting assembly for limiting the detector, the limiting assembly comprises a limiting block and a limiting spring, the limiting block is connected to the first chute in a sliding manner, the top side and the bottom side of the limiting block are both provided with inclined planes, the detector is provided with a limiting groove, and the limiting block is inserted into the limiting groove; one end of the limiting spring is fixedly connected to the bottom of the first sliding groove, and the other end of the limiting spring is fixedly connected to one side, far away from the detector, of the limiting block. The detector has the effect of being convenient to disassemble and assemble for maintenance or replacement.

Description

Survey drill bit and pile foundation detection device

Technical Field

The application relates to a pile foundation detects technical field, especially relates to a survey drill bit and pile foundation detection device.

Background

The pile foundation is used as an important component of an engineering structure and is used for transmitting the load of an upper structure to a geotechnical foundation, and the quality condition of the pile foundation plays an important role in ensuring the safe operation of the engineering structure. Other structures exist at the top of the pile foundation of the engineering structure in service period, the pile foundation can not be detected by adopting a pile foundation detection means commonly used in construction period, and in order to solve the problems of detection and evaluation of the technical condition of the pile foundation of the engineering structure in service period, scholars at home and abroad propose a side-hole transmission wave method through research, develop corresponding instrument equipment and establish a detection technical standard.

In the related technology, reference is made to the chinese utility model patent with the publication number CN104818735A, which discloses a probing drill and a method for detecting pile foundation by using the probing drill, in particular to a probing drill, wherein a groove is formed on the probing drill, and an accelerometer or a detector is accommodated in the groove; a first connecting wire is arranged in the detection drill bit, one end of the first connecting wire is connected with the accelerometer or the detector, and the other end of the first connecting wire is connected with the signal acquisition instrument.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the detector can be damaged in the long-term use process, and the technical scheme is inconvenient for disassembling the detector for replacement or maintenance.

SUMMERY OF THE UTILITY MODEL

In order to facilitate dismouting wave detector, this application provides a survey drill bit and pile foundation detection device.

The application provides a survey drill bit and pile foundation detection device adopts following technical scheme:

a survey drill bit and pile foundation detection device comprises a detection drill bit and a detector, wherein the detection drill bit comprises a conical drill bit, a first pipe fitting and a second pipe fitting, the first pipe fitting is fixedly connected to the conical drill bit, the second pipe fitting is sleeved on the first pipe fitting, the detector is sleeved on the first pipe fitting, the outer side wall of the first pipe fitting is provided with threads, the inner side wall of the second pipe fitting is provided with threads, and the first pipe fitting and the second pipe fitting are in threaded connection; the detector comprises a first pipe fitting, a second pipe fitting, a third pipe fitting, a fourth pipe fitting and a fourth pipe fitting, wherein the outer peripheral surface of the first pipe fitting is provided with a first chute, the first pipe fitting is provided with a limiting assembly for limiting a detector, the limiting assembly comprises a limiting block and a limiting spring, the limiting block is connected to the first chute in a sliding mode, the top side and the bottom side of the limiting block are both provided with inclined planes, the detector is provided with a limiting groove, and the limiting block is inserted into the limiting groove; one end of the limiting spring is fixedly connected to the bottom of the first sliding groove, and the other end of the limiting spring is fixedly connected to one side, far away from the detector, of the limiting block.

By adopting the technical scheme, in order to install the detector, the conical drill bit is twisted to drive the first pipe fitting to rotate, the first pipe fitting rotates to separate the first pipe fitting from the second pipe fitting, so that the detector can be moved to be sleeved on the first pipe fitting, and when the detector is sleeved on the first pipe fitting, the end face of the bottom side of the detector is in contact with the top side inclined face of the limiting block, so that the detector can push the limiting block to slide into the first sliding groove; when the wave detector is sleeved on the first pipe fitting, the limiting spring pushes the limiting block to be inserted into the limiting groove due to the elastic force of the limiting spring, so that the possibility that the wave detector rotates on the first pipe fitting is reduced, then the first pipe fitting is connected with the second pipe fitting by screwing the conical drill bit, and the end face of the second pipe fitting abuts against the upper end of the wave detector at the moment, so that the aim of fixedly connecting the wave detector is fulfilled; when the detector needs to be disassembled, the conical drill bit is firstly screwed, so that the first pipe fitting and the second pipe fitting are separated, then the detector is moved, the side wall of the limiting groove is in inclined plane contact with the bottom side of the limiting block at the moment, the limiting block can be pushed to move into the first sliding groove, the purpose of disassembling the detector is achieved, and the purpose of conveniently disassembling and assembling the detector is achieved.

Preferably, the wave detector is fixedly connected with two first conductive posts, two second sliding grooves are formed in the outer peripheral surface of the first pipe fitting corresponding to the first conductive posts, and one ends of the two second sliding grooves are communicated with the end surface of the first pipe fitting, which is far away from one end of the conical drill bit; and a first connecting component is arranged in each of the two second sliding grooves.

Through adopting above-mentioned technical scheme, at the in-process of installation wave detector, the wave detector removes and drives two first conductive columns and remove, when the wave detector cover was established on first pipe fitting, because the effect of first connecting elements, can have the electric current to pass through on the first conductive column to reach the purpose for the wave detector circular telegram.

Preferably, the first connecting assembly includes a third conductive column, a second conductive column, a fixing block, and two elastic pieces, the second conductive column penetrates through the pipe wall of the first pipe fitting, one end of the second conductive column is located in the pipe channel of the first pipe fitting, the other end of the second conductive column is located in the second sliding groove, the third conductive column is fixedly connected to one end of the second conductive column located in the pipe channel of the first pipe fitting, and the third conductive column has elasticity; the fixed block is fixedly connected with the side wall of the first sliding chute, the fixed block is fixedly connected with the second conductive column, the two elastic pieces are fixedly connected to the upper surface of the fixed block, and the two elastic pieces are abutted against the first conductive column; and a second connecting assembly for electrifying the two third conductive columns is also arranged in the channel of the second pipe fitting.

By adopting the technical scheme, the current is introduced into the two third conductive columns through the second connecting assembly, and then the third conductive columns are sequentially introduced into the second conductive columns, the fixed block and the elastic sheet, and then the elastic sheet is introduced into the first conductive columns, so that the purpose of electrifying the first conductive columns is achieved.

Preferably, the longitudinal sections of the two elastic pieces are arc-shaped, and one ends of the two elastic pieces far away from the fixed block are bent towards the opposite outer sides of the two elastic pieces.

By adopting the technical scheme, the longitudinal sections of the two elastic sheets are arranged to be arc-shaped, so that the first conductive column can push the two elastic sheets to bend in the process that the first conductive column is contacted with the two elastic sheets, and the connecting difficulty of the connecting column and the two elastic sheets is reduced; meanwhile, the two ends of the two elastic pieces are in a bent state, so that the possibility that the first conductive column moves to the outer sides of the two elastic pieces is reduced.

Preferably, the second connection assembly comprises a support pipe, two conducting rings, two conducting pillars and two conducting blocks, the support pipe is fixedly connected in the pipe channel of the second pipe fitting, two conducting wires are arranged in the support pipe, the two conducting pillars are both fixedly connected to the bottom side of the support pipe and are electrically connected with the two conducting wires in the support pipe, the two conducting rings are respectively and fixedly connected to the two conducting pillars, the two conducting rings can jointly form a complete ring, and the two conducting rings are not in contact with each other; the two conducting blocks are respectively and fixedly connected to the two third conducting posts and are respectively abutted against the two conducting rings, inclined planes are arranged on the top sides of the two conducting blocks, inclined planes are arranged on the bottom sides of the two conducting rings, and the inclined planes of the two conducting blocks can be matched with the inclined planes of the two conducting rings.

By adopting the technical scheme, in the process of connecting the first pipe fitting to the second pipe fitting, the conical drill bit is twisted to drive the first pipe fitting to move, the first pipe fitting moves to drive the conductive blocks to move, and when the inclined surfaces of the conductive blocks are contacted with the inclined surfaces of the conductive rings, the conductive rings can push the two conductive blocks to approach each other under the action of the inclined surfaces; when the end parts of the conductive blocks move to the inner sides of the phase positions of the two conductive rings, the third conductive column can push the two conductive blocks to abut against the inner side walls of the conductive rings under the elastic action of the third conductive column; after the wave detector is installed, the electric wires flowing out of the supporting tube sequentially pass through the conductive support, the conductive ring and the conductive block and then flow into the third conductive column, so that the purpose of electrifying the third conductive column is achieved.

Preferably, graphene is arranged on one side of each of the two conductive blocks, which abuts against the two conductive rings, and the conductive blocks abut against the conductive rings through the graphene.

Through adopting above-mentioned technical scheme, through setting up graphite alkene, be convenient for on the one hand reduce the conducting block and the conducting ring junction the contact insufficient and the resistance increase's that leads to possibility, on the other hand is convenient for reduce the conducting block and lead the friction between the electrical pillar.

Preferably, the end face of the top side of the detector is fixedly connected with a first rubber pad, and the first rubber pad abuts against the end face of the second pipe fitting.

Through adopting above-mentioned technical scheme, through setting up first rubber pad, be convenient for increase the leakproofness between wave detector and the second pipe fitting.

Preferably, the end face of the conical drill bit is fixedly connected with a second rubber pad, the second rubber pad is sleeved on the first pipe fitting, the bottom side of the detector abuts against the second rubber pad, a groove is formed in the second rubber pad, a rubber block is fixedly connected to the bottom side of the detector, and the rubber block is inserted into the groove.

By adopting the technical scheme, the second rubber pad is arranged, so that the sealing property between the detector and the first pipe fitting is increased conveniently; through setting up the rubber piece, be convenient for on the one hand further increase the leakproofness between first pipe fitting and the wave detector, on the other hand plays the effect of prepositioning.

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

1. in order to install the detector, the conical drill bit is screwed to drive the first pipe fitting to rotate, the first pipe fitting rotates to enable the first pipe fitting and the second pipe fitting to be separated, so that the detector can be moved to be sleeved on the first pipe fitting, when the detector is sleeved on the first pipe fitting, the end face of the bottom side of the detector is in contact with the top side inclined face of the limiting block, and the detector can push the limiting block to slide into the first sliding groove; when the wave detector is sleeved on the first pipe fitting, the limiting spring pushes the limiting block to be inserted into the limiting groove due to the elastic force of the limiting spring, so that the possibility that the wave detector rotates on the first pipe fitting is reduced, then the first pipe fitting is connected with the second pipe fitting by screwing the conical drill bit, and the end face of the second pipe fitting abuts against the upper end of the wave detector at the moment, so that the aim of fixedly connecting the wave detector is fulfilled; when the detector needs to be disassembled, firstly screwing the conical drill bit to separate the first pipe fitting from the second pipe fitting, then moving the detector, wherein the side wall of the limiting groove is in contact with the inclined surface at the bottom side of the limiting block, so that the limiting block can be pushed to move into the first sliding groove, the purpose of disassembling the detector is achieved, and the purpose of facilitating the disassembling and assembling of the detector is achieved;

2. in the process of installing the wave detector, the wave detector moves to drive the two first conductive columns to move, when the wave detector is sleeved on the first pipe fitting, current can pass through the first conductive columns under the action of the first connecting assembly, and therefore the purpose of electrifying the wave detector is achieved;

3. the current passes through two third by the second coupling assembling and leads in the electrical pillar, leads electrical pillar, fixed block and flexure strip back in proper order by the third again and leads electrical pillar, lets in first by the flexure strip in leading electrical pillar to reach the mesh of leading electrical pillar circular telegram for first.

Drawings

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

FIG. 2 is a cross-sectional view of a probe bit in an embodiment of the present application;

FIG. 3 is a schematic view of a geophone and a second rubber pad in an embodiment of the present application;

FIG. 4 is an enlarged view at A in FIG. 2;

fig. 5 is an enlarged view at B in fig. 2.

Description of reference numerals: 1. detecting a drill bit; 11. a first pipe member; 111. a first chute; 112. a second chute; 12. a second pipe member; 13. a conical drill bit; 131. a second rubber pad; 132. a groove; 2. a detector; 21. a limiting groove; 22. a first conductive post; 23. a first rubber pad; 24. a rubber block; 3. a limiting component; 31. a limiting block; 32. a limiting spring; 4. a first connection assembly; 41. a third conductive pillar; 42. a second conductive post; 43. a fixed block; 44. an elastic sheet; 5. a second connection assembly; 51. supporting a tube; 52. conducting rings; 53. a conductive pillar; 54. and a conductive block.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses survey drill bit and pile foundation detection device, as shown in fig. 1 and 2, including surveying drill bit 1 and wave detector 2, survey drill bit 1 and include conical bit 13, first pipe fitting 11 and second pipe fitting 12, first pipe fitting 11, second pipe fitting 12 are the insulator, 11 fixed connection in conical bit 13 of first pipe fitting, second pipe fitting 12 cover is established on first pipe fitting 11, the outer peripheral face of first pipe fitting 11 is equipped with the screw thread, the inner peripheral face of second pipe fitting 12 is equipped with the screw thread, first pipe fitting 11 and 12 threaded connection of second pipe fitting.

As shown in fig. 2 and 3, the detector 2 is sleeved on the first pipe 11, the end surface of the top end of the detector 2 is fixedly connected with a first rubber pad 23, the first rubber pad 23 abuts against the end surface of the second pipe 12, the upper surface of the conical drill 13 is fixedly connected with a second rubber pad 131, the second rubber pad 131 is sleeved on the first pipe 11, and the bottom side of the detector 2 abuts against the second rubber pad 131. A plurality of grooves 132 with rectangular openings are formed in the bottom side of the second rubber pad 131, a plurality of rubber blocks 24 are fixedly connected to the bottom side of the geophone 2, and the plurality of rubber blocks 24 are in one-to-one corresponding insertion fit with the plurality of grooves 132. By providing the first rubber pad 23, the sealing between the geophone 2 and the second pipe member 12 is facilitated to be increased. The second rubber pad 131 is arranged, so that the sealing property between the detector 2 and the first pipe fitting 11 is increased; by providing the rubber block 24, on the one hand, it is convenient to further increase the sealing between the first tube 11 and the geophone 2, and on the other hand, it serves for pre-positioning.

As shown in fig. 2 and 4, two first sliding grooves 111 are symmetrically formed in the outer peripheral surface of the first pipe 11 along the axial line of the first pipe 11, an opening of each first sliding groove 111 is rectangular, and two sets of limiting assemblies 3 are arranged on the first pipe 11 corresponding to the two first sliding grooves 111. The limiting component 3 comprises a limiting block 31 and a limiting spring 32, the limiting block 31 is connected to the first sliding groove 111 in a sliding mode, inclined planes are arranged on the bottom side and the top side of the limiting block 31, and a limiting groove 21 matched with the limiting block 31 in an inserted mode is formed in the inner circumferential surface of the detector 2. The limiting spring 32 is arranged in the first sliding groove 111, one end of the limiting spring 32 is fixedly connected to the bottom of the first sliding groove 111, and the other end of the limiting spring 32 is fixedly connected to one side of the limiting block 31 far away from the wave detector 2.

As shown in fig. 2 and fig. 3, in order to facilitate the uninterrupted power supply of the phase detector 2, two first conductive pillars 22 are fixedly connected to the detector 2, two second sliding grooves 112 are formed in the outer peripheral surface of the first pipe 11 corresponding to the two first conductive pillars 22, and one ends of the two second sliding grooves 112, which are far away from the tapered drill 13, are communicated with the end surface of the first pipe 11. The first connecting components 4 are arranged in the two second sliding chutes 112. The first connection assembly 4 includes a third conductive column 41, a second conductive column 42, a fixing block 43 and two elastic pieces 44, the second conductive column 42 penetrates through the tube wall of the first tube 11, one end of the second conductive column 42 is located in the second sliding groove 112, the other end of the second conductive column is located in the pipeline of the first tube 11, the third conductive column 41 is vertically disposed, the third conductive column 41 is fixedly connected to one end of the second conductive column 42 located in the first tube 11, and the third conductive column 41 has certain elasticity. The fixing block 43 is a rectangular block structure, the fixing block 43 is fixedly connected to the inner side wall of the second sliding groove 112, and the fixing block 43 and the second conductive column 42 are fixedly connected to one end of the second sliding groove 112. The longitudinal sections of the two elastic pieces 44 are arc-shaped, the two elastic pieces 44 are fixedly connected to the upper surface of the fixing block 43, the two elastic pieces 44 are abutted to the first conductive column 22, and one ends of the two elastic pieces 44 far away from the fixing block 43 are bent towards the opposite outer sides of the two elastic pieces 44. A second connecting assembly 5 for supplying power to the two third conductive posts 41 is also arranged in the second tube 12.

In the process of installing the detector 2, the detector 2 moves to drive the two first conductive columns 22 to move, the first conductive columns 22 can be in contact with the two elastic sheets 44 in the moving process, and the longitudinal sections of the two elastic sheets 44 are arc-shaped, so that the first conductive columns 22 can push the two elastic sheets 44 to bend in the contact process of the first conductive columns 22 and the two elastic sheets 44, and the difficulty of connecting the connecting columns and the two elastic sheets 44 is reduced. When the detector 2 is sleeved on the first pipe fitting 11, the current passes through the second connecting assembly 5 and then passes through the two third conductive columns 41, and then passes through the second conductive column 42, the fixed block 43 and the elastic sheet 44 in sequence by the third conductive columns 41 and then passes through the first conductive column 22 by the elastic sheet 44, so that the purpose of electrifying the first conductive column 22 is achieved.

As shown in fig. 2 and 5, the second connecting assembly 5 includes a supporting tube 51, two conductive rings 52, two conductive pillars 53, and two conductive blocks 54, the supporting tube 51 is disposed in the second pipe 12, fixing glue is injected into the second pipe 12 to fix the supporting tube 51, and two conductive wires are disposed in the supporting tube 51. The two conductive pillars 53 are both fixedly connected to the bottom side of the support tube 51, and the two conductive pillars 53 are electrically connected to the two conductive wires in the support tube 51, respectively. The two conducting rings 52 are both semi-circular block structures, the two conducting rings 52 can form a complete circular ring together, the two conducting rings 52 are always in a non-contact state, and the two conducting rings 52 are respectively and fixedly connected with the two conducting posts 53. The two conductive blocks 54 are respectively and fixedly connected to the two third conductive pillars 41, the width of the cross section of each of the two conductive blocks 54 is greater than the gap between the adjacent ends of the two conductive rings 52, the two conductive blocks 54 are respectively abutted against the inner sidewalls of the two conductive rings 52, one side of each of the two conductive blocks 54 abutted against the two conductive rings 52 is fixedly connected with graphene, and the conductive blocks 54 are abutted against the conductive rings 52 through graphene. The top sides of the two conductive blocks 54 are provided with slopes, the bottom sides of the two conductive rings 52 are provided with slopes, and the slopes of the two conductive blocks 54 can be matched with the slopes of the two conductive rings 52. By providing graphene, on one hand, the possibility of increased resistance due to insufficient contact at the connection between the conductive block 54 and the conductive ring 52 is reduced, and on the other hand, friction between the conductive block 54 and the conductive column is reduced.

In the process of connecting the first pipe fitting 11 to the second pipe fitting 12, the first pipe fitting 11 is driven to move by screwing the conical drill bit 13, the first pipe fitting 11 drives the conductive block 54 to move, and when the inclined surface of the conductive block 54 is in contact with the inclined surface of the conductive ring 52, the conductive ring 52 can push the two conductive blocks 54 to approach each other due to the inclined surface; when the end of the conductive block 54 moves to the inner side of the phase position of the two conductive rings 52, under the elastic force of the third conductive pillar 41, the third conductive pillar 41 can push the two conductive blocks 54 to abut against the inner side walls of the conductive rings 52; after the wave detector 2 is mounted, the electric wires flowing out of the supporting tube 51 sequentially pass through the conductive support 53, the conductive ring 52 and the conductive block 54 and then flow into the third conductive column 41, so as to energize the third conductive column 41.

The implementation principle of survey drill bit and pile foundation detection device of the embodiment of the application is: in order to install the detector 2, the conical drill bit 13 is screwed to drive the first pipe fitting 11 to rotate, the first pipe fitting 11 rotates to enable the first pipe fitting 11 and the second pipe fitting 12 to be separated, so that the detector 2 can be moved to be sleeved on the first pipe fitting 11, when the detector 2 is sleeved on the first pipe fitting 11, the end face of the bottom side of the detector 2 is in contact with the top side inclined face of the limiting block 31, and the detector 2 can push the limiting block 31 to slide into the first sliding groove 111; when the detector 2 is sleeved on the first pipe fitting 11, due to the elastic force of the limiting spring 32, the limiting spring 32 pushes the limiting block 31 to be inserted into the limiting groove 21, so that the possibility that the detector 2 rotates on the first pipe fitting 11 is reduced, then the conical drill bit 13 is screwed, the first pipe fitting 11 is connected with the second pipe fitting 12, and the end face of the second pipe fitting 12 abuts against the upper end of the detector 2, so that the purpose of fixedly connecting the detector 2 is achieved; when the detector 2 needs to be disassembled, the conical drill bit 13 is firstly screwed, so that the first pipe fitting 11 and the second pipe fitting 12 are separated, then the detector 2 is moved, the side wall of the limiting groove 21 contacts with the inclined surface at the bottom side of the limiting block 31 at the moment, the limiting block 31 can be pushed to move into the first sliding groove 111, the purpose of disassembling the detector 2 is achieved, and the purpose of conveniently disassembling and assembling the detector 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 (8)

1. The utility model provides a survey drill bit and pile foundation detection device, is including surveying drill bit (1) and radiodetector (2), its characterized in that: the detection drill bit (1) comprises a conical drill bit (13), a first pipe fitting (11) and a second pipe fitting (12), the first pipe fitting (11) is fixedly connected to the conical drill bit (13), the second pipe fitting (12) is sleeved on the first pipe fitting (11), the wave detector (2) is sleeved on the first pipe fitting (11), the outer side wall of the first pipe fitting (11) is provided with threads, the inner side wall of the second pipe fitting (12) is provided with threads, and the first pipe fitting (11) is in threaded connection with the second pipe fitting (12); the detector comprises a first pipe (11), a second pipe (11) and a detector, wherein the outer peripheral surface of the first pipe (11) is provided with a first sliding groove (111), the first pipe (11) is provided with a limiting assembly (3) for limiting a detector (2), the limiting assembly (3) comprises a limiting block (31) and a limiting spring (32), the limiting block (31) is connected to the first sliding groove (111) in a sliding mode, the top side and the bottom side of the limiting block (31) are provided with inclined planes, the detector (2) is provided with a limiting groove (21), and the limiting block (31) is inserted into the limiting groove (21); one end of the limiting spring (32) is fixedly connected to the bottom of the first sliding groove (111), and the other end of the limiting spring is fixedly connected to one side, far away from the detector (2), of the limiting block (31).

2. A survey drill bit and pile foundation testing apparatus according to claim 1, wherein: the detector (2) is fixedly connected with two first conductive columns (22), two second sliding grooves (112) are formed in the outer peripheral surface of the first pipe fitting (11) corresponding to the first conductive columns (22), and one ends of the two second sliding grooves (112) are communicated with the end surface of the first pipe fitting (11) far away from one end of the conical drill bit (13); and a first connecting component (4) is arranged in each of the two second sliding grooves (112).

3. A survey drill bit and pile foundation testing apparatus according to claim 2, wherein: the first connecting assembly (4) comprises a third conductive column (41), a second conductive column (42), a fixed block (43) and two elastic sheets (44), the second conductive column (42) penetrates through the tube wall of the first tube (11), one end of the second conductive column (42) is located in the channel of the first tube (11), the other end of the second conductive column is located in the second chute (112), the third conductive column (41) is fixedly connected with one end, located in the channel of the first tube (11), of the second conductive column, and the third conductive column (41) has elasticity; the fixed block (43) is fixedly connected with the side wall of the first sliding chute (111), the fixed block (43) is fixedly connected with the second conductive column (42), the two elastic sheets (44) are fixedly connected with the upper surface of the fixed block (43), and the two elastic sheets (44) are abutted against the first conductive column (22); and a second connecting component (5) for electrifying the two third conductive columns (41) is also arranged in the channel of the second pipe fitting (12).

4. A survey drill bit and pile foundation testing apparatus according to claim 3, wherein: the longitudinal sections of the two elastic pieces (44) are arc-shaped, and one ends of the two elastic pieces (44) far away from the fixing block (43) are bent towards the opposite outer sides of the two elastic pieces (44).

5. A survey drill bit and pile foundation testing apparatus according to claim 3, wherein: the second connecting assembly (5) comprises a supporting pipe (51), two conducting rings (52), two conducting pillars (53) and two conducting blocks (54), the supporting pipe (51) is fixedly connected in the pipe of the second pipe (12), two conducting wires are arranged in the supporting pipe (51), the two conducting pillars (53) are both fixedly connected to the bottom side of the supporting pipe (51), the two conducting pillars (53) are electrically connected with the two conducting wires in the supporting pipe (51), the two conducting rings (52) are respectively and fixedly connected to the two conducting pillars (53), the two conducting rings (52) can jointly form a complete ring, and the two conducting rings (52) are not in contact with each other; the two conductive blocks (54) are respectively and fixedly connected to the two third conductive columns (41), the two conductive blocks (54) are respectively abutted to the two conductive rings (52), inclined planes are arranged on the top sides of the two conductive blocks (54), inclined planes are arranged on the bottom sides of the two conductive rings (52), and the inclined planes of the two conductive blocks (54) can be matched with the inclined planes of the two conductive rings (52).

6. A survey drill bit and pile foundation testing apparatus as claimed in claim 5, wherein: graphene is arranged on one side of each of the two conductive blocks (54) which is abutted against the two conductive rings (52), and the conductive blocks (54) are abutted against the conductive rings (52) through the graphene.

7. A survey drill bit and pile foundation testing apparatus according to claim 1, wherein: the end face of the top side of the detector (2) is fixedly connected with a first rubber pad (23), and the first rubber pad (23) abuts against the end face of the second pipe fitting (12).

8. A survey drill bit and pile foundation testing apparatus according to claim 1, wherein: the end face of the conical drill bit (13) is fixedly connected with a second rubber pad (131), the second rubber pad (131) is sleeved on the first pipe fitting (11), the bottom side of the detector (2) abuts against the second rubber pad (131), a groove (132) is formed in the second rubber pad (131), a rubber block (24) is fixedly connected to the bottom side of the detector (2), and the rubber block (24) is inserted into the groove (132).

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