Drill bit is stirred in the two-way rotation of mixing pile machine
Technical field
The utility model relates to drilling tool in the mixing pile machine, refers to the two-way rotation stirring of a kind of mixing pile machine drill bit particularly.
Background technology
In present construction technology, the construction of mixing pile machine is more and more universal, and along with the requirement of construction quality and cost is more and more higher, also more and more higher to the requirement of efficiency of construction and construction quality.And in present construction, the ejection medium of mixing pile machine (cement paste or flour) does not all stir fully usually and reaches designing requirement.And in construction, in order to improve the deficiency of this aspect, design department is designed to the mixing pile machine of construction to stir repeatedly often.Since this stir repeatedly will be again stirring up and down once or repeatedly, delayed a lot of engineering times thus, influenced efficiency of construction.
Thus, designer of the present utility model designs and has made the two-way rotation of a kind of mixing pile machine and stir drill bit in order to overcome defective of the prior art.
Summary of the invention
The purpose of this utility model is to provide the two-way rotation of a kind of mixing pile machine to stir drill bit, and it can be issued in the situation of disposable pile than stirring better effect repeatedly, and can improve efficiency of construction, saves construction cost.
For realizing this purpose, drill bit is stirred in the two-way rotation that the utility model discloses a kind of mixing pile machine, it is characterized in that:
Comprise and be rotated with different directions respectively and the outer drill bit 3 and the interior drill bit 1 of any movement interference do not take place, should be sleeved in the outer drill bit 3 by interior drill bit 1, have a plurality of media of outside impurity and injection that prevent between two drill bits and enter the seal 2 of drill bit internal, have the spring bearing 4 that supports this outer drill bit 3 between interior drill bit 1 and the outer drill bit 3;
On the interior drill bit 1 first blade 1-1 bottom the access opening 1-2 that is used for ejection medium is installed, the top of this first blade 1-1 is equipped with lower flange 1-3, cover 1-6, back-up ring 1-5 and mandrel 1-10, lower flange 1-3 is connected 1-4 with cover 1-6 with bolt, back-up ring 1-5 is stuck in mandrel 1-10 and goes up to prevent that lower flange 1-3 and cover 1-6 from moving up and down, cover 1-6 top is equipped with outer seal sleeve 1-7 and following clamping sleeve 1-9, there is Conic thread rod 1-11 the top of mandrel 1-10, the outside of Conic thread rod 1-11 is equipped with the interior side's cover 1-12 that prevents that Conic thread rod is loosening, the clip 1-13 of 1-12 location, drilling rod 1-15 and core pipe 1-16 in the upper end of Conic thread rod 1-11 is equipped with overlapped in the side in the top of interior side cover 1-12 was equipped with and is convenient to;
Has the second blade 3-6 on the housing 3-5 of outer drill bit 3, sealing shroud 3-1 and middle clamping sleeve 3-3 are arranged below housing 3-5, by bolt 3-4 sealing shroud 3-1 and middle clamping sleeve 3-3 are connected to housing 3-5, clamping sleeve 3-7, flange 3-8 on above housing 3-5, having, side cover 3-10 and outside drilling rod 3-11, by bolt 3-9 flange 3-8 is connected with side cover 3-10, outer drilling rod 3-11 is welded to connect with side's cover (3-10).
Wherein, the first blade 1-1 and the second blade 3-6 of interior drill bit 1 and outer drill bit 3 are single or multiple lift.
Wherein, the first blade 1-1 of the single or multiple lift of interior drill bit 1 has a plurality of spray-hole 1-2.
Wherein, this spring bearing 4 is deep groove ball bearing, cylinder roller bearing or taper roll bearing.
Pass through said structure, advantage of the present utility model is: designed two-way rotary drilling-head, during work, when passing to inside and outside torque-on-bit respectively with clockwise and counterclockwise different directions, ejection medium (cement paste or flour) from interior drill bit interstitial hole simultaneously, and many places have been designed sealing ring and are prevented that inside and outside impurity from entering in the drill bit in the middle of inside and outside drill bit.Guarantee that whole drill bit is rotatablely moving and moving up and down the flexible influence that is not subjected to any impurity.When boring under drill bit and promoting, the rotation of the blade different directions of inside and outside drill bit makes stirs increased frequency and because the difference of direction, make stir more abundant.Because of the prior art the stirring repeatedly rotated all the time in the same direction, so the drill bit of two-way rotation is more obvious than the effect that stirs repeatedly.This moment, medium just can stir fully by the two-way rotation of drill bit.So just can in construction, need not stirring up and down repeatedly realize well-beaten purpose.Save the time of construction, improved the efficient of construction, saved construction cost.
Description of drawings
Fig. 1 is the overall structure schematic diagram that drill bit is stirred in the two-way rotation of mixing pile machine;
Fig. 2 is interior drill bit structure figure
Fig. 3 is outer drill bit structure figure
The specific embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is described in further detail:
The overall structure of drill bit is stirred in the two-way rotation of mixing pile machine shown in Fig. 1, drill bit 1 and an outer drill bit 3 in it has one by one, interior drill bit 1 overlaps the inside of drill bit 3 outside, and adopted in a plurality of sealing rings 2 of diverse location guarantee drill bit 1 and outside mutual sealing between the drill bit 3, thereby prevent that extraneous impurity from entering in the drill bit.The spring bearing 4 that supports inside and outside drill bit has been installed in the housing 3-5 of drill bit 3 the inside outside, to prevent rocking mutually between the inside and outside drill bit, avoids the concentricity of the inside and outside drill bit of this wobble effects and reduces drill bit sealing performance everywhere.
Shown in Fig. 2 is the structure chart of interior drill bit, on the first blade 1-1 bottom of interior drill bit 1 the access opening 1-2 that is used for ejection medium is installed.The top of this first blade 1-1 is equipped with lower flange 1-3, cover 1-6, back-up ring 1-5 and mandrel 1-10, lower flange 1-3 and cover 1-6 interconnect, this connected mode preferably adopts bolt 1-4 or other to connect as suitable manner such as riveted joints, and back-up ring 1-5 is stuck in the groove on the mandrel 1-10 and between lower flange 1-3 and cover 1-6, the external diameter of this back-up ring 1-5 prevents thus that greater than the internal diameter of lower flange 1-3 and cover 1-6 lower flange 1-3 and cover 1-6 from moving up and down.Cover 1-6 top further is equipped with outer seal sleeve 1-7 and following clamping sleeve 1-9.Form certain space between following clamping sleeve 1-9 and the mandrel 1-10, there is Conic thread rod 1-11 the top of mandrel 1-10, cover 1-12 in side's in the outside of Conic thread rod 1-11 is equipped with, prevent the loosening of taper thread, the top of interior side cover 1-12 is equipped with clip 1-13, so that locate for interior side cover 1-12, be equipped with the mandrel 1-10 of interior drill bit in the upper end of Conic thread rod 1-11 and be connected with interior drilling rod 1-15, the core pipe 1-16. that drives its rotation
Shown in Fig. 3 is outer drill bit structure figure, outer drill bit 3 is welded with the second blade 3-6 on housing 3-5, sealing shroud 3-1 and middle clamping sleeve 3-3 are arranged below housing 3-5, sealing shroud 3-1 is connected with housing 3-5 with middle clamping sleeve 3-3 with bolt 3-4 or other connected mode.Clamping sleeve 3-7, flange 3-8 on above housing 3-5, having, side cover 3-10 and outside drilling rod 3-11.With bolt 3-9 flange 3-8 is connected with side cover 3-10.Outer drilling rod 3-11 and side cover 3-10 are welded to each other.
And be formed with the space that holds spring bearing 4 between the mandrel 1-10 of the housing 3-5 of drill bit and interior drill bit outside, this spring bearing 4 can be various bearings such as deep groove ball bearing, cylinder roller bearing, taper roll bearing, and the sealing shroud 3-1 of outer drill bit inserts in the following clamping sleeve 1-9 of interior drill bit.
And sealing ring 2 can be positioned on each positions such as clamping sleeve 3-7, sealing shroud 3-1, following clamping sleeve 1-9, thereby the sealing of diverse location can be provided, and sealing circle 2 can be O-ring seals commonly used, y-shaped ring, v-ring, the sealing ring group etc. of form fit mutually.
The course of work of this drill bit is as follows:
In moment of torsion passes to different directions respectively drill bit 1 and outside during drill bit 3.Interior drill bit 1 passes to mandrel 1-10 by Conic thread rod 1-11, the blade 1-1. of drill bit 1 rotates blade 1-1 toward the direction in by mandrel 1-10 moment of torsion being passed to again, and in rotation, endoporus and the spray-hole 1-2 on the blade 1-1 by interior drill bit come ejection medium (cement paste or powder medium), simultaneously, moment of torsion is passed to outer drilling rod 3-11 on the outer drill bit 3 with the direction of rotation of drill bit 1 in being different from, with the moment of torsion side of passing to cover 3-10, the connection by bolt passes to housing 3-5 and blade 3-6 with moment of torsion to outer drilling rod 3-11 again by welding.Make blade 1-1 on blade 3-6 and the interior drill bit on the outer drill bit 3 with different direction rotations, reached well-beaten effect.Owing in the interior drill bit 1 ejection medium is arranged, outer drill bit 3 contacts with underground original position soil, and rotating motion is arranged, and therefore, many places have been designed sealing ring and prevented that inside and outside impurity from entering in the drill bit in the middle of them.Guarantee that whole drill bit is rotatablely moving and moving up and down the flexible influence that is not subjected to any impurity.