CN205778549U

CN205778549U - A kind of earth-squeezing hole-enlarging stake drilling tool

Info

Publication number: CN205778549U
Application number: CN201620500470.9U
Authority: CN
Inventors: 刘录怀
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-05-27
Filing date: 2016-05-27
Publication date: 2016-12-07
Anticipated expiration: 2026-05-27

Abstract

This utility model provides a kind of earth-squeezing hole-enlarging stake drilling tool.Including enlarged footing, described enlarged footing includes enlarging tooth, inner core and the urceolus being sheathed on inner core, and described inner core and described urceolus interval are arranged, described inner core includes clamping part, described urceolus includes limiting section and extending port, described limiting section quantity be two and interval be formed on the inner peripheral of described urceolus, described clamping part is formed on the outer peripheral edge of described inner core and is arranged between two described limiting sections, described extending port is the through hole running through described urceolus, described enlarging tooth includes the connecting portion movable with described inner core and extends and insert the expansion mouth of described extending port from described connecting portion.Enlarged footing of the present utility model is set to the double-decker of inner core and urceolus, and enlarging tooth is located at inner core, and utilizes the rotation of described enlarged footing, controls stretching out and shrinking of enlarging tooth, completes the enlarging to different soil properties.

Description

A kind of earth-squeezing hole-enlarging stake drilling tool

[technical field]

This utility model relates to building engineering field, is specifically related to a kind of earth-squeezing hole-enlarging stake drilling tool.

[background technology]

At present in the foundation engineerings such as building, water conservancy, highway, Double helix extruded and extended pile is the most conventional Pile foundation form, this construction method includes utilizing bidirectional helix closed extruding-enlarging aiguille to creep into squeezed hole, to Lower rotary drill squeezed hole can be squeezed in stake holes sidewall by the rotary drill out soil body, then make bidirectional screw Closed extruding-enlarging aiguille moves upward and again rotates squeezed stake holes, stake holes in rotating up squeezed lifting The interior slump soil body can be squeezed in stake holes sidewall, promotes simultaneously in upper rotation, starts concrete pump to stake holes Intrinsic pressure filling piling.The subject matter existed is first to dig out soil rotation to be transported up again to the stake of both sides again Wall extrudes, and the soil therefore spun out can block the conveying channel that rotating vane is formed, easily produce Bit bouncing phenomenon.And the earth discharged or mud, add bore forming difficulty and progress.

Along with the increase of building height, foundation pile length is stepped up, and the difficulty of pile foundation construction is the most more come The biggest.The bearing capacity of the bored concrete pile of existing pile foundation construction is mainly by stake end soil resistance and Pile side soil Frictional force forms；The enlarged footing of pile foundation uses cement high-pressure mortar spraying to be formed, however current intricately Use above-mentioned bored concrete pile may meet requirement under the conditions of matter.

Therefore, it is necessary to provide the earth-squeezing hole-enlarging stake drilling tool used under a kind of complex geological condition.

[utility model content]

The purpose of this utility model is to provide a kind of earth-squeezing hole-enlarging stake drilling tool.

The technical solution of the utility model is as follows:

A kind of earth-squeezing hole-enlarging stake drilling tool, including having the drilling rod of drill bit and being sheathed on the enlarged footing of described drill bit, Described enlarged footing includes enlarging tooth, inner core and is sheathed on the urceolus of inner core, and described inner core and described outside Cylinder interval is arranged, and described inner core includes that clamping part, described urceolus include limiting section and extending port, described Limiting section quantity be two and interval be formed on the inner peripheral of described urceolus, described clamping part is formed at On the outer peripheral edge of described inner core and be arranged between two described limiting sections, described extending port is for running through Stating the through hole of urceolus, described enlarging tooth includes the connecting portion movable with described inner core and from described connecting portion Extend and insert the expansion mouth of described extending port；Described drilling rod also includes body, the stop being sequentially connected with Circle and borded pile, described borded pile extends from described drill bit and is formed, described body, stop circle, spiral Post and the concentricity axle of drill bit are arranged, and the described internal diameter stopping circle is more than described borded pile and described body, And it is surrounded on the depth of thread screw thread more than described stop ring outer wall of described borded pile outer wall.

Preferably, the screw thread week footpath phase of the screw thread Zhou Jing of described stop ring outer wall and described borded pile outer wall With.

Preferably, described inner core and hollow cylinder that described urceolus is concentricity axle.

Preferably, described inner core and described urceolus are by described limiting section and described clamping part and at two Reverse coaxial rotating in the range of circular arc length between described limiting section.

Preferably, between two described limiting sections, the length of circular arc string is less than the length of described expansion mouth.

Preferably, by rotating against of described inner core and described urceolus, described expansion mouth along described in stretch Way out stretches out and shrinks.

Preferably, described limiting section and described clamping part are formed at same level.

The beneficial effects of the utility model are:

1, stop that coil structures carries out second time and extrudes the hole wall of the stake of the most squeezed one-tenth, stop formation of pile Soil is not screwed out direct squeezed pile, and its novel structure, pile quality are good, be difficult to bit bouncing.

2, environmental protection, discharges without mud, transports outward without dregs, without construction fugitive dust, it is not necessary to deposit soil site, Environment around will not be contaminated.

3, will be enlarged by head and be set to the double-decker of inner core and urceolus, enlarging tooth is located at inner core, and Utilize the rotation of described enlarged footing, control stretching out and shrinking of enlarging tooth, complete the expansion to different soil properties Mouthful, the design of this structure is simple, low cost, effective, be suitable to batch production and promote the use of.

[accompanying drawing explanation]

Fig. 1 is the structure chart of this utility model earth-squeezing hole-enlarging stake drilling tool；

Fig. 2 is the profile of the enlarged footing use state one of earth-squeezing hole-enlarging stake drilling tool shown in Fig. 1；

Fig. 3 is the profile of the enlarged footing use state two of earth-squeezing hole-enlarging stake drilling tool shown in Fig. 1.

[detailed description of the invention]

The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.

Please refer to Fig. 1 to Fig. 3, this utility model provides a kind of earth-squeezing hole-enlarging stake drilling tool 100, Drilling rod 2 and the enlarged footing 1 being sheathed on described drill bit 21 including tool drill bit 21.

Described enlarged footing 1 includes enlarging tooth 11, inner core 12 and is sheathed on the urceolus 13 of inner core 12, and Described inner core 12 and described urceolus 13 interval are arranged.

Described inner core 12 includes clamping part 121.

Described urceolus 13 includes limiting section 131 and extending port 133, and described limiting section 131 quantity is two Individual and interval is formed on the inner peripheral of described urceolus 13, and described clamping part 121 is formed at described inner core Outer peripheral edge on and be arranged between two described limiting sections 131, described extending port 133 is for running through State the through hole of urceolus 13.

Described enlarging tooth 11 includes and the connecting portion 111 of described inner core 12 activity and from described connecting portion 111 extend and insert the expansion mouth 112 of described extending port 133.

Described inner core 12 and the hollow cylinder that described urceolus 13 is concentricity axle；Described inner core 12 and institute State urceolus 13 by described limiting section 131 and described clamping part 121 and at two described limiting sections 131 Between circular arc length in the range of reverse coaxial rotating；Concrete, circle between two described limiting sections 131 The length of arc string is less than the length of described expansion mouth 112.

By rotating against of described inner core 12 and described urceolus 13, described expansion mouth 112 is along described Extending port 133 direction is stretched out and is shunk.

Described limiting section 131 is formed at same level with described clamping part 121.

Described urceolus 13 is one-body molded；Described inner core 12 is one-body molded.

Also include that hinge 14, described hinge 14 connect described enlarging tooth 11 and described inner core 12.

In the present embodiment, in fig. 2, drilling rod drive described inner core 12 rotate counterclockwise, described outside Cylinder 13 is by up time in the range of the described clamping part 121 circular arc length between two described limiting sections 131 Pin rotates；Described expansion mouth 112 is shunk along described extending port 133 direction.

In figure 3, drilling rod drives described inner core 12 to turn clockwise, and described urceolus 13 is by described Clamping part 121 rotates in the range of the circular arc length between two described limiting sections 131 counterclockwise；Make Described expansion mouth 112 shrinks along described extending port 133 direction.

Described drilling rod 2 also includes the body 22 being sequentially connected with, stops circle 23 and borded pile 24, described Borded pile 24 extends from described drill bit 21 and is formed, described body 22, stop circle 23, borded pile 24 And the concentricity axle of drill bit 21 is arranged, the described internal diameter stopping circle 23 is more than described borded pile 24 with described Body 2, and it is surrounded on screw thread 241 degree of depth of described borded pile 24 outer wall more than described stop circle 23 The screw thread 231 of outer wall.

Further, the described 231 weeks footpaths of screw thread stopping circle 23 outer walls and described borded pile 241 outer wall 241 weeks footpaths of screw thread identical.This structure ensure that earth-squeezing hole-enlarging stake drilling tool 100 piling during, Described stop circle 23 structures carry out second time and extrude the hole wall of the stake of the most squeezed one-tenth, stop formation of pile Soil is not screwed out direct squeezed pile.

Preferably, the described aspect ratio stopping circle 23 and borded pile 24 is preferably 7:25, actual size Requirement, the height of described stop circle 23 is 70cm, and the height of described borded pile 24 is 250cm, both May insure that the stake holes degree of depth of the most squeezed one-tenth meets design requirement, also ensure that borded pile 24 is to the most crowded simultaneously The hole wall of the stake expanded carries out second time and extrudes, and stops that formation of pile soil is not screwed out direct squeezed pile.

The beneficial effects of the utility model are: add stop coil structures, stop that circle is to the most squeezed one-tenth The hole wall of stake carry out second time and extrude, stop that formation of pile soil is not screwed out direct squeezed pile, its Novel structure, pile quality are good, be difficult to bit bouncing；Inter-pile soil body has layer compaction effect, and pile bearing capacity is high, The environment of surrounding also will not be contaminated；And will be enlarged by head and be set to the double-deck knot of inner core and urceolus Structure, is located at inner core by enlarging tooth, and utilizes the rotation of described enlarged footing, controls stretching out of enlarging tooth With contraction, completing the enlarging to different soil properties, the design of this structure is simple, low cost, effective, suitable In producing in batches and promoting the use of.

Above-described is only embodiment of the present utility model, it should be noted here that for this area Those of ordinary skill for, without departing from this utility model create design on the premise of, it is also possible to do Go out to improve, but these belong to protection domain of the present utility model.

Claims

1. an earth-squeezing hole-enlarging stake drilling tool, it is characterised in that: include having the drilling rod of drill bit and be sheathed on institute Stating the enlarged footing of drill bit, described enlarged footing includes enlarging tooth, inner core and is sheathed on the urceolus of inner core, and Described inner core and described urceolus interval are arranged, and described inner core includes that clamping part, described urceolus include spacing Portion and extending port, described limiting section quantity be two and interval be formed on the inner peripheral of described urceolus, Described clamping part is formed on the outer peripheral edge of described inner core and is arranged between two described limiting sections, institute Stating extending port is the through hole running through described urceolus, and described enlarging tooth includes the connection movable with described inner core Portion and extend and insert the expansion mouth of described extending port from described connecting portion；

Described drilling rod also includes the body being sequentially connected with, stops circle and borded pile, and described borded pile is from institute Stating drill bit and extend formation, described body, stop circle, borded pile and the concentricity axle of drill bit are arranged, described Stop that the internal diameter of circle is more than described borded pile and described body, and be surrounded on the spiral shell of described borded pile outer wall The stricture of vagina degree of depth is more than the screw thread of described stop ring outer wall.

Earth-squeezing hole-enlarging stake drilling tool the most according to claim 1, it is characterised in that: the described stop encloses The screw thread Zhou Jing of outer wall is identical with the screw thread week footpath of described borded pile outer wall.

Earth-squeezing hole-enlarging stake drilling tool the most according to claim 1, it is characterised in that: described inner core and Described urceolus is the hollow cylinder of concentricity axle.

Earth-squeezing hole-enlarging stake drilling tool the most according to claim 3, it is characterised in that: described inner core and Described urceolus is long by described limiting section and described clamping part and the circular arc between two described limiting sections In the range of reverse coaxial rotating.

Earth-squeezing hole-enlarging stake drilling tool the most according to claim 3, it is characterised in that: two described limits Between the portion of position, the length of circular arc string is less than the length of described expansion mouth.

Earth-squeezing hole-enlarging stake drilling tool the most according to claim 1, it is characterised in that: in described Cylinder rotates against with described urceolus, and described expansion mouth stretches out along described extending port direction and shrinks.

Earth-squeezing hole-enlarging stake drilling tool the most according to claim 1, it is characterised in that: described limiting section It is formed at same level with described clamping part.