CN205907677U

CN205907677U - Reaming stake and drilling tool thereof

Info

Publication number: CN205907677U
Application number: CN201620500355.1U
Authority: CN
Inventors: 刘录怀
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-05-27
Filing date: 2016-05-27
Publication date: 2017-01-25
Anticipated expiration: 2026-05-27

Abstract

The utility model provides a reaming stake and drilling tool thereof. The reaming stake includes the pile foundation, fills in the concrete pile of pile foundation body and reamer part, reamer part includes certainly pile foundation bottom extends the pile foundation head that forms, cover in the grout layer of the first inner wall of pile foundation, fill in the intraformational concrete pile head of grout. Set up the bilayer structure into inner tube and urceolus with the enlarged footing, locate the inner tube with the flaring tooth, and utilize the rotation of enlarged footing, the flaring to different soil properties is accomplished in stretch out and the shrink of control flaring tooth, and this structural design is simple, with low costs, effectual, be suitable for batch production and use widely.

Description

A kind of hole-expanding pile and its drilling tool

[technical field]

This utility model is related to build engineering field and in particular to a kind of hole-expanding pile and its drilling tool.

[background technology]

With the increase of building height, foundation pile length is stepped up, and the difficulty of pile foundation construction is also increasing.Existing stake The bearing capacity of the bored concrete pile of foundation construction is mainly made up of stake end soil resistance and Pile side soil frictional force；The enlarged footing of pile foundation makes Formed with cement high-pressure mortar spraying, but may be met using above-mentioned bored concrete pile under current complex geological condition and want Ask.

Therefore, it is necessary to provide the hole-expanding pile using under a kind of complex geological condition and its drilling tool.

[utility model content]

The purpose of this utility model is to provide a kind of hole-expanding pile and its drilling tool.

The technical solution of the utility model is as follows:

A kind of hole-expanding pile, the concrete-pile body including pile foundation, being filled in pile foundation and reamer, described reamer is included certainly Described pile foundation bottom extends the pile foundation head being formed, is covered in the grout layer of described pile foundation head inwall, is filled in described cement mortar In the layer concrete pile head.

Preferably, described concrete-pile body and described concrete pile head one form.

A kind of drilling tool, the drilling rod including tool drill bit and the enlarged footing being sheathed on described drill bit, described enlarged footing includes enlarging Tooth, inner core and the outer tube being sheathed on inner core, and described inner core and described outer tube interval setting, described inner core includes clamping part, institute State outer tube and include limiting section and extending port, described limiting section quantity is two and interval is formed on the inner peripheral of described outer tube, Described clamping part is formed on the outer peripheral edge of described inner core and is arranged between two described limiting sections, and described extending port is to run through The through hole of described outer tube, described enlarging tooth includes extending with the connecting portion of described inner core activity with from described connecting portion and inserting institute State the expansion mouth of extending port.

Preferably, described drilling rod also includes body and the borded pile being sequentially connected, and described borded pile extends from described drill bit Formed, described body, borded pile and drill bit are arranged with central shaft.

Preferably, described inner core and hollow cylinder that described outer tube is same central shaft.

Preferably, described inner core and described outer tube pass through described limiting section and described clamping part and in two described limiting sections Between the long scope of circular arc in reverse coaxial rotating.

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

Preferably, rotating against by described inner core and described outer tube, described expansion mouth is stretched along described extending port direction Go out and shrink.

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

The beneficial effects of the utility model are:

Will be enlarged by the double-decker that head is set to inner core and outer tube, by enlarging tooth located at inner core, and utilize described expansion The rotation of head, controls stretching out and contraction of enlarging tooth, completes the enlarging to different soil properties, this structure design is simple, low cost, effect Really good, be suitable to produce in batches and promote the use of.

[brief description]

Fig. 1 is the sectional view of this utility model hole-expanding pile；

Fig. 2 is the structure chart of this utility model drilling tool；

Fig. 3 is the profile of the enlarged footing use state one of drilling tool shown in Fig. 2；

Fig. 4 is the profile of the enlarged footing use state two of drilling tool shown in Fig. 2.

[specific embodiment]

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

Please refer to Fig. 2 to Fig. 4, this utility model provides a kind of drilling tool 100, including the drilling rod 2 of tool drill bit 21.

Described enlarged footing 1 includes enlarging tooth 11, inner core 12 and the outer tube 13 being sheathed on inner core 12, and described inner core 12 and institute State outer tube 13 interval setting.

Described inner core 12 includes clamping part 121.

Described outer tube 13 includes limiting section 131 and extending port 133, and described limiting section 131 quantity is two and is spaced formation On the inner peripheral of described outer tube 13, described clamping part 121 is formed on the outer peripheral edge of described inner core and is arranged in described in two Between limiting section 131, described extending port 133 is the through hole running through described outer tube 13.

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

Described inner core 12 and the hollow cylinder that described outer tube 13 is same central shaft；Described inner core 12 and described outer tube 13 pass through Described limiting section 131 and described clamping part 121 and reversely coaxially revolve in the long scope of circular arc between two described limiting sections 131 Turn；Specifically, between two described limiting sections 131, the length of circular arc string is less than the length of described expansion mouth 112.

By rotating against of described inner core 12 and described outer tube 13, described expansion mouth 112 is along described extending port 133 direction Stretch out and shrink.

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

Described outer tube 13 is integrally formed；Described inner core 12 is integrally formed.

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

In the present embodiment, in figure 3, drilling rod drives described inner core 12 rotate counterclockwise, and described outer tube 13 passes through described Clamping part 121 turns clockwise in the long scope of circular arc between two described limiting sections 131；Make described expansion mouth 112 edge Described extending port 133 direction is shunk.

In the diagram, drilling rod drives described inner core 12 to turn clockwise, and described outer tube 13 passes through described clamping part 121 two Rotate counterclockwise in the long scope of circular arc between individual described limiting section 131；Make described expansion mouth 112 along described extending port 133 Direction is shunk.

Described drilling rod 2 also includes the body 22 being sequentially connected and borded pile 24, and described borded pile 24 prolongs from described drill bit 21 Stretch and formed, described body 22, borded pile 24 and drill bit 21 are arranged with central shaft.

Refer to Fig. 1, this utility model additionally provides the hole-expanding pile 300 that a kind of construction of this drilling tool 100 of application completes, described Hole-expanding pile 300 includes pile foundation 31, the concrete-pile body 32 being filled in pile foundation 31 and and reamer 4.

Described reamer 4 includes extending the pile foundation 41 being formed, being covered in described pile foundation 41 from described pile foundation 31 bottom The grout layer 42 of inwall, the concrete pile head 43 being filled in described grout layer 42.

In the present embodiment, described concrete-pile body 32 and described concrete pile head 43 one form.

The beneficial effects of the utility model are: will be enlarged by the double-decker that head is set to inner core and outer tube, by enlarging tooth Located at inner core, and the rotation using described enlarged footing, control stretching out and contraction of enlarging tooth, complete the expansion to different soil properties Mouthful, this structure design is simple, low cost, effect are good, be suitable to produce in batches and promote the use of.

Above-described is only embodiment of the present utility model, it should be noted here that the ordinary skill for this area For personnel, on the premise of creating design without departing from this utility model, improvement can also be made, but these belong to this practicality New protection domain.

Claims

1. a kind of hole-expanding pile is it is characterised in that include pile foundation, the concrete-pile body being filled in pile foundation and reamer, described expansion Hole portion includes extending the pile foundation head being formed, being covered in the grout layer of described pile foundation head inwall, be filled in from described pile foundation bottom Described cement mortar in the layer concrete pile head.

2. hole-expanding pile according to claim 1 is it is characterised in that described concrete-pile body and described concrete-pile are first Body form.

3. a kind of drilling tool it is characterised in that: include the drilling rod of tool drill bit and be sheathed on the enlarged footing of described drill bit, described enlarged footing Including enlarging tooth, inner core and the outer tube being sheathed on inner core, and described inner core and described outer tube interval setting, described inner core includes card Buckle, described outer tube includes limiting section and extending port, described limiting section quantity be two and be spaced be formed at the interior of described outer tube On periphery, described clamping part is formed on the outer peripheral edge of described inner core and is arranged between two described limiting sections, described stretches out Mouth is the through hole running through described outer tube, and described enlarging tooth includes with the connecting portion of described inner core activity and extends from described connecting portion And insert the expansion mouth of described extending port.

4. drilling tool according to claim 3 it is characterised in that: described drilling rod also includes body and the spiral being sequentially connected Post, described borded pile extends from described drill bit and is formed, and described body, borded pile and drill bit are arranged with central shaft.

5. drilling tool according to claim 3 it is characterised in that: described inner core and the open circles that described outer tube is same central shaft Cylinder.

6. drilling tool according to claim 3 it is characterised in that: described inner core and described outer tube pass through described limiting section and institute State clamping part and in the long scope of the circular arc between two described limiting sections reverse coaxial rotating.

7. drilling tool according to claim 3 it is characterised in that: between two described limiting sections the length of circular arc string be less than institute State the length of expansion mouth.

8. drilling tool according to claim 3 it is characterised in that: by rotating against of described inner core and described outer tube, institute State expansion mouth to stretch out along described extending port direction and shrink.

9. drilling tool according to claim 3 it is characterised in that: described limiting section and described clamping part are formed at same level Face.