Utility model content
The purpose of this utility model is to provide a kind of long screw drill rod, and side wall soil can be reinforced during drilling and forming hole
Above-mentioned technical purpose of the present utility model technical scheme is that：
A kind of long screw drill rod, including central tube, be fixed on central tube periphery helical blade, be arranged on shaft two
The ring flange at end, also including the high-pressure slip-casting pipe being fixed on central tube, the axis of high-pressure slip-casting pipe is put down with the axis of central tube
OK, a termination of high-pressure slip-casting pipe is communicated with whitewashing mouth, the axis of the emission direction of mouth of whitewashing perpendicular to central tube.
By using above-mentioned technical proposal, long spire bar is sprayed to cement mortar by high-pressure pump during drilling and forming hole
In the wall soil layer of side, so as to reinforce the effect of side wall soil layer, there is provided side friction, raising CFG pile bearing capacity effects are finally reached.
Preferably, whitewashing mouth to adjacent flange disk air line distance between 1m to 2m.
By using above-mentioned technical proposal, while water under high pressure mud can be avoided to spray earth's surface, preferably reinforcing is played
Preferably, the emission direction of whitewashing mouth intersects with the axis of central tube.
By using above-mentioned technical proposal, make the emission direction of water under high pressure mud perpendicular to side wall soil layer, make high pressure cement
The pressure effect for starching offside wall soil layer is more preferable.
Preferably, high-pressure slip-casting pipe is fixed between central tube and helical blade.
By using above-mentioned technical proposal, high-pressure slip-casting pipe is fixed between central tube and helical blade in can facilitating
The independent processing of heart pipe, helical blade and high-pressure slip-casting pipe, it is not necessary to adapt to high-pressure slip-casting pipe to existing central tube and spiral shell
The structure of vane piece is largely changed, and facilitates the assembling of each part.
Preferably, the outlet of whitewashing mouth is arranged on helical blade away from the end face of central tube.
By using above-mentioned technical proposal, make whitewashing mouth nearest apart from side wall soil layer, when offside wall soil layer is pressurizeed,
The speed loss that water under high pressure mud reaches side wall soil layer is small, and pressure effect is good.
Preferably, coaxial on the periphery of central tube be rotatably connected to influent stream ring, connection pressure injection high is provided with influent stream ring
The runner of pipe is starched, the flow inlet of connection runner is provided with influent stream ring.
By using above-mentioned technical proposal, because in boring procedure, long screw drill rod is pressed into rotation, therefore height all the time
Slurry pipe is being rotated all the time, inconvenience when injecting cement mortar to high pressure pulp-inlet pipe, and setting influent stream ring can make cement mortar from flow inlet
Enter high-pressure slip-casting pipe through runner.Influent stream ring can be rotated with central tube, when long screw drill rod is rotated, influent stream ring and flow inlet
Can inject cement mortar more convenient with remains stationary.
Preferably, be connected with swivel base on the periphery of central tube, swivel base is towards being provided with the end face of adjacent flange disk and enter
The seat slot that stream ring is adapted, high-pressure slip-casting pipe connects end face of the seat slot away from adjacent flange disk, and runner is opened in influent stream ring axial end
On face, influent stream ring is provided with end face being inserted in seat slot towards seat slot of runner, swivel base and adjacent ring flange be smaller than into
Flow the axial length of ring.
By using above-mentioned technical proposal, runner is open state, is closed runner by seat slot wall, when to flow inlet injection water
During mud, influent stream ring can axially float in the presence of water under high pressure mud along it, and with ring flange or be connected to ring flange
On bolt abut, keep runner sealing state.
Preferably, flow inlet is opened on the periphery of influent stream ring.
By using above-mentioned technical proposal, facilitate the injection of cement mortar, while influent stream ring moving influence cement can be avoided
The connection of slurry injection device and influent stream ring.
Preferably, being provided with location hole on influent stream ring.
By using above-mentioned technical proposal, to ensure the state in not turning that influent stream ring can be stablized, location hole is set
Can facilitate and provide impetus to the fixed of influent stream ring, facilitate the fixation of influent stream ring.
Preferably, high-pressure slip-casting pipe is provided with multiple and is uniformly distributed.
By using above-mentioned technical proposal, can make long screw drill rod during rotation downwards, stress is more balanced,
Boring procedure is relatively stable.Increase the amount of the cement mortar of the ejection of high-pressure slip-casting pipe simultaneously, be favorably improved adding for side wall soil layer
In sum, the utility model has the advantages that：
Long spire bar during drilling and forming hole, during cement mortar sprayed into side wall soil layer by high-pressure pump, so as to reinforce side
The effect of wall soil layer, there is provided side friction, is finally reached raising CFG pile bearing capacity effects；Facilitate the assembling of each part；Make cement
Slurry injection is more convenient.
Brief description of the drawings
Fig. 1 is the structural representation of long screw drill rod；
Fig. 2 is enlarged drawing at A in Fig. 1；
Fig. 3 is enlarged drawing at B in Fig. 1；
Fig. 4 is the partial sectional view of long screw drill rod；
Fig. 5 is enlarged drawing at C in Fig. 4.
In figure, 1, central tube；2nd, helical blade；21st, nozzle bore；3rd, ring flange；4th, high-pressure slip-casting pipe；41st, whitewashing mouth；5、
Influent stream ring；51st, runner；52nd, flow inlet；53rd, location hole；6th, swivel base；61st, seat slot；62nd, hole is taken over.
The utility model is described in further detail below in conjunction with accompanying drawing.Wherein identical parts identical accompanying drawing
Mark is represented.It should be noted that the word "front", "rear" for being used in description below, "left", "right", "up" and "down" refer to
It is the direction in accompanying drawing, word " bottom surface " and " top surface ", " interior " and " outward " are referred respectively to towards or away from particular elements geometry
The direction at center.
A kind of long screw drill rod, as shown in figure 1, the central tube 1 including circular tube shaped, is connected with the periphery of central tube 1
Helical blade 2, the axis of helical blade 2 overlaps with central tube 1.Be respectively and fixedly connected with two axial ends of central tube 1 with
The coaxial ring flange 3 of central tube 1.
As shown in Fig. 2 the swivel base 6 for being connected with annular of one end of central tube 1, swivel base 6 is coaxial with central tube 1, and sets
Between two ring flanges 3.Swivel base 6 is towards the seat slot 61 that annular is provided with the end face of ring flange 3 adjacent thereto.Seat slot 61 is hung down
Straight to be provided with four adapter holes 62 in uniform on the end face of the axis of central tube 1, adapter hole 62 is through hole.
One is plugged with seat slot 61 the influent stream ring 5 being connected is rotated with central tube 1, influent stream ring 5 is to be adapted with seat slot 61
Ring-type, influent stream ring 5 is provided with the runner 51 of annular in the seat slot 61 on the end face of through hole.Through hole and runner 51 in seat slot 61
Connection.The axial length of influent stream ring 5 and runner 51 is all higher than the axial length of seat slot 61.It is provided with the outer circle wall of influent stream ring 5
Circular flow inlet 52, the connection runner 51 of flow inlet 52.The edge of flow inlet 52 be provided with to influent stream ring 5 end face of runner 51 away from
From more than the axial length of seat slot 61, making flow inlet 52 be always positioned at outside seat slot 61.
A location hole 53 is provided with the outer circumferential sides wall of influent stream ring 5, location hole 53 is blind hole.The edge of location hole 53 is arrived
Influent stream ring 5 is provided with the distance of the end face of runner 51, more than the axial length of seat slot 61, location hole 53 is always positioned at seat slot 61
Outward.The axial length of influent stream ring 5 is more than the spacing of swivel base 6 and adjacent ring flange 3.
In connection with Figures 1 to 4, being connected with four high-pressure slip-casting pipes 4 on the outer circle wall of central tube 1, high-pressure slip-casting pipe 4 is worn
Cross helical blade 2.The axis of high-pressure slip-casting pipe 4 and the diameter parallel of central tube 1.In 4 two terminations of each high-pressure slip-casting pipe
One affixed with seat slot 61, and four high-pressure slip-casting pipes 4 are coaxial with adapter hole 62 respectively and connect.Adapter hole 62 and high-pressure slip-casting pipe
4 inwall radius is identical；Another termination is communicated with whitewashing mouth 41.
With reference to Fig. 5, whitewashing mouth 41 is circular tube shaped.Helical blade 2 on the end face of central tube 1 away from being provided with and four nozzle bores
21, four nozzle bores 21 are evenly distributed on a circumference for spiral of helical blade 2, the axis and central tube of nozzle bore 21
1 axis is vertical and intersecting, and the angle of the adjacent axis of nozzle bore 21 is 90 degree.The outer wall of whitewashing mouth 41 is interior with nozzle bore 21
Wall is adapted, and whitewashing mouth 41 is fixed in nozzle bore 21 and is connected with the high-pressure slip-casting pipe 4 for injecting helical blade 2.Whitewashing mouth 41 is arrived
The air line distance of adjacent flange disk 3 is between 1m to 2m.
When using, one end that long screw drill rod sets whitewashing mouth 41 is connected with drill bit, the other end is connected with rig, by height
Pressure cement injection device connected with flow inlet 52, high pressure cement injection device is fixed with influent stream ring 5, startup rig, drill bit with
Long screw drill rod pierces ground, and influent stream ring 5 is rotated relative to central tube 1, after mouth 41 of whitewashing enters underground layer, high pressure cement injection
Influent stream ring 5, high-pressure slip-casting pipe 4 is flowed between runner 51 and seat slot 61, and soil layer side wall is sprayed to from four whitewashing mouths 41.
This specific embodiment is only that, to explanation of the present utility model, it is not to limitation of the present utility model, ability
Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but
As long as all being protected by Patent Law in right of the present utility model.