CN212656217U

CN212656217U - Bored concrete pile head preliminary treatment structure

Info

Publication number: CN212656217U
Application number: CN202020992159.7U
Authority: CN
Inventors: 章泽锋; 钱青锋; 徐素英; 盛良军; 杨林峰
Original assignee: Zhejiang Blossom Construction Group Co ltd
Current assignee: Zhejiang Blossom Construction Group Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-03-05
Anticipated expiration: 2030-06-03

Abstract

The utility model relates to a bored concrete pile head preliminary treatment structure, affiliated bored concrete pile construction equipment technical field, including the drilling rod, the drilling rod lower extreme be equipped with a plurality of play water steel pipes that are equidistant annular distribution and communicate each other, play water steel pipe upper end all be equipped with a plurality of be equidistant distribution and with the check valve nozzle that play water steel pipe is linked together, play water steel pipe and drilling rod between be equipped with play water steel pipe looks welded type intercommunication and cup joint the drilling rod joint of intercommunication with drilling rod looks screw thread formula, drilling rod upper end be equipped with the inlet tube that is linked together with the drilling rod, inlet tube and drilling rod between be equipped with the conversion seat, conversion seat and inlet tube between be equipped with the water pipe head that cup joints with conversion seat looks screw thread formula. Has the characteristics of simple structure, time and labor saving, high efficiency and short period. The concrete segregation principle is adopted, and the problem that the concrete of the super-irrigation part is chipped is solved.

Description

Bored concrete pile head preliminary treatment structure

Technical Field

The utility model relates to a bored concrete pile construction equipment technical field, concretely relates to bored concrete pile head preliminary treatment structure.

Background

When the cast-in-situ bored pile is used for pouring concrete, in order to ensure the strength of the concrete at the pile head, the cast-in-situ bored pile is usually designed to provide an over-pouring length, and after the pile body reaches the designed strength, the over-pouring part of the concrete is chiseled by workers. At present, pile head pretreatment is proposed, namely, the concrete of the over-poured part is treated when the concrete is poured, so that the designed elevation of the pile top is obtained after the pile is dug out when earthwork is excavated, and the pile head does not need to be chiseled, thereby saving the time for subsequent construction.

Disclosure of Invention

The utility model discloses mainly solve exist among the prior art waste time and energy, inefficiency and the not enough of cycle length, provide a drilling bored concrete pile head preliminary treatment structure, it has simple structure, labour saving and time saving, efficient and the short characteristics of cycle. The concrete segregation principle is adopted, and the problem that the concrete of the super-irrigation part is chipped is solved.

The above technical problem of the present invention can be solved by the following technical solutions:

the utility model provides a drilling bored concrete pile head preliminary treatment structure, includes the drilling rod, the drilling rod lower extreme be equipped with a plurality of play water steel pipes that are equidistant annular distribution and communicate each other, play water steel pipe upper end all be equipped with a plurality of check valve nozzles that are equidistant distribution and be linked together with play water steel pipe, play water steel pipe and drilling rod between be equipped with play water steel pipe welded type intercommunication and with the drilling rod looks screw thread formula cup joint the drilling rod joint of intercommunication, drilling rod upper end be equipped with the inlet tube that is linked together with the drilling rod, inlet tube and drilling rod between be equipped with the conversion seat, conversion seat and water pipe between be equipped with the water pipe head that cup joints with conversion seat looks screw thread formula.

Preferably, a fixed shaft is arranged between the conversion seat and the drill rod, one end of the fixed shaft is in inserted-embedded sleeve joint with the conversion seat, and the other end of the fixed shaft is in bearing-type nested connection with the drill rod.

Preferably, the drill rod and the conversion seat are provided with dustproof end covers which are sleeved with the fixed shaft and are fastened with the drill rod through bolts, and guide shaft sleeves which are in limited sleeved connection with the fixed shaft are arranged below the dustproof end covers.

Preferably, a bearing which is in limit socket joint with the fixed shaft is arranged between the guide shaft sleeve and the dustproof end cover.

Preferably, an end face sealing ring which is nested with the fixed shaft in a sealing mode is arranged between the lower end of the guide shaft sleeve and the drill rod.

Preferably, the conversion seat is provided with a fixing screw which is in limit pressure connection with the fixing shaft.

Preferably, a plurality of shaft diameter sealing rings which are embedded with the fixed shaft in a clamping groove mode are arranged between the fixed shaft and the conversion seat, and the shaft diameter sealing rings are symmetrically distributed at the upper end and the lower end of the water pipe joint.

Preferably, a supporting steel bar rod integrally welded with the water outlet steel pipe is arranged between the two adjacent water outlet steel pipes.

The utility model discloses can reach following effect:

the utility model provides a bored concrete pile head preliminary treatment structure compares with prior art, has simple structure, labour saving and time saving, efficient and the short characteristics of cycle. The concrete segregation principle is adopted, and the problem that the concrete of the super-irrigation part is chipped is solved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a structural sectional view of the present invention.

Fig. 3 is a sectional view of the connection structure of the drill rod and the water inlet pipe in the present invention.

In the figure: the device comprises a support steel bar rod 1, a water outlet steel pipe 2, a one-way valve nozzle 3, a drill rod 4, a drill rod joint 5, a fixing screw 6, a conversion seat 7, a fixing shaft 8, a shaft diameter sealing ring 9, a water pipe joint 10, a water inlet pipe 11, a dustproof end cover 12, a bearing 13, a guide shaft sleeve 14 and an end face sealing ring 15.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): as shown in fig. 1, 2 and 3, the structure for pretreating the pile head of the cast-in-situ bored pile comprises a

drill rod

4, 4 water outlet steel pipes 2 which are distributed at equal intervals in an annular manner and are communicated with each other are arranged at the lower end of the drill rod 4, and a support steel bar rod 1 integrally welded with the water outlet steel pipes 2 is arranged between every two adjacent water outlet steel pipes 2. The upper end of each water outlet steel pipe 2 is provided with 7 one-way valve nozzles 3 which are distributed at equal intervals and are communicated with the water outlet steel pipes 2, a drill rod joint 5 which is welded with the water outlet steel pipes 2 and is in threaded sleeve connection with the drill rod 4 is arranged between the water outlet steel pipes 2 and the drill rod 4, the upper end of the drill rod 4 is provided with a water inlet pipe 11 which is communicated with the drill rod 4, a conversion seat 7 is arranged between the water inlet pipe 11 and the drill rod 4, and a water pipe joint 10 which is in threaded sleeve connection with the conversion seat 7 is arranged between the conversion seat 7 and the water inlet pipe. A fixed shaft 8 is arranged between the conversion seat 7 and the drill rod 4, one end of the fixed shaft 8 is in inserted-embedded type sleeve joint with the conversion seat 7, and a fixed screw 6 which is in limited crimping with the fixed shaft 8 is arranged on the conversion seat 7. 2 shaft diameter sealing rings 9 which are embedded with the fixed shaft 8 in a clamping groove mode are arranged between the fixed shaft 8 and the conversion seat 7, and the 2 shaft diameter sealing rings 9 are symmetrically distributed at the upper end and the lower end of the water pipe joint 10. The other end of the fixed shaft 8 is in bearing type nested connection with the drill rod 4. The drill rod 4 and the conversion seat 7 are provided with a dustproof end cover 12 which is sleeved with the fixed shaft 8 and is fastened with the drill rod 4 through bolts, and a guide shaft sleeve 14 which is sleeved with the fixed shaft 8 in a limiting mode is arranged below the dustproof end cover 12. A bearing 13 which is in limited socket joint with the fixed shaft 8 is arranged between the guide shaft sleeve 14 and the dustproof end cover 12. An end face sealing ring 15 which is nested with the fixed shaft 8 in a sealing way is arranged between the lower end of the guide shaft sleeve 14 and the drill rod 4.

And after concrete pouring is finished, pulling out the guide pipe, and then connecting and fixing a drill rod joint 5 on the pretreatment structure with a drill rod 4, wherein the length of the drill rod 4 is determined according to the elevation of the pile top. And then, connecting a water inlet pipe 11 to the top of the drill rod, slowly lowering the drill rod by a winch after the connection, and stopping lowering the lower part of the water outlet steel pipe 2 to the position 1 m below the concrete surface. Then pressure water enters the drill stem 4 from the water inlet pipe 11, and is sprayed out from the check valve nozzle 3 through the water outlet steel pipe 2, the drill stem 4 rotates slowly, and meanwhile diluted slurry is sucked away. And then stopping rotating and injecting water, slowly lowering the water outlet steel pipe 2 again, repeating the process of injecting pressure water to dilute the concrete when the pile top is at the elevation, and finally slowly lifting the pretreatment structure to complete the pile top pretreatment process.

In conclusion, the pile head pretreatment structure of the cast-in-situ bored pile has the characteristics of simple structure, time and labor conservation, high efficiency and short period. The concrete segregation principle is adopted, and the problem that the concrete of the super-irrigation part is chipped is solved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without deviating from the basic characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In conclusion, the above description is only the specific embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims

1. The utility model provides a drilling bored concrete pile head preliminary treatment structure, includes drilling rod (4), its characterized in that: the drill rod is characterized in that a plurality of water outlet steel pipes (2) which are distributed in an equidistant annular mode and are communicated with each other are arranged at the lower end of the drill rod (4), a plurality of check valve nozzles (3) which are distributed in an equidistant mode and are communicated with the water outlet steel pipes (2) are arranged at the upper ends of the water outlet steel pipes (2), drill rod joints (5) which are communicated with the water outlet steel pipes (2) in a welding mode and are in threaded sleeve connection with the drill rod (4) are arranged between the water outlet steel pipes (2) and the drill rod (4), a water inlet pipe (11) communicated with the drill rod (4) is arranged at the upper end of the drill rod (4), a conversion seat (7) is arranged between the water inlet pipe (11) and the drill rod (11), and a water pipe joint (10) which is in threaded sleeve connection with the conversion seat (7).

2. The pile head pretreatment structure of the cast-in-situ bored pile according to claim 1, wherein: a fixed shaft (8) is arranged between the conversion seat (7) and the drill rod (4), one end of the fixed shaft (8) is in inserted-embedded sleeve joint with the conversion seat (7), and the other end of the fixed shaft (8) is in bearing-type nested connection with the drill rod (4).

3. The pile head pretreatment structure of the cast-in-situ bored pile according to claim 2, wherein: the drilling rod (4) and the conversion seat (7) are provided with dustproof end covers (12) which are sleeved with the fixed shaft (8) and are fastened with the drilling rod (4) through bolts, and guide shaft sleeves (14) which are sleeved with the fixed shaft (8) in a limiting mode are arranged below the dustproof end covers (12).

4. The pile head pretreatment structure of the cast-in-situ bored pile according to claim 3, wherein: and a bearing (13) which is in limited socket joint with the fixed shaft (8) is arranged between the guide shaft sleeve (14) and the dustproof end cover (12).

5. The pile head pretreatment structure of the cast-in-situ bored pile according to claim 3, wherein: an end face sealing ring (15) which is nested with the fixed shaft (8) in a sealing way is arranged between the lower end of the guide shaft sleeve (14) and the drill rod (4).

6. The pile head pretreatment structure of the cast-in-situ bored pile according to claim 2, wherein: the conversion seat (7) is provided with a fixing screw (6) which is in limited pressure joint with the fixing shaft (8).

7. The pile head pretreatment structure of the cast-in-situ bored pile according to claim 2, wherein: a plurality of shaft diameter sealing rings (9) which are nested with the fixed shaft (8) in a clamping groove mode are arranged between the fixed shaft (8) and the conversion seat (7), and the shaft diameter sealing rings (9) are symmetrically distributed at the upper end and the lower end of the water pipe joint (10).

8. The pile head pretreatment structure of the cast-in-situ bored pile according to claim 1, wherein: a supporting steel bar rod (1) integrally welded with the water outlet steel pipe (2) is arranged between two adjacent water outlet steel pipes (2).