CN113668518A - Stirring blade assembly - Google Patents
Stirring blade assembly Download PDFInfo
- Publication number
- CN113668518A CN113668518A CN202111023159.1A CN202111023159A CN113668518A CN 113668518 A CN113668518 A CN 113668518A CN 202111023159 A CN202111023159 A CN 202111023159A CN 113668518 A CN113668518 A CN 113668518A
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- China
- Prior art keywords
- stirring blade
- drill rod
- stirring
- bushing
- drill
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/08—Removing obstacles
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
- E21B27/005—Collecting means with a strainer
Abstract
The present invention provides a stirring blade assembly, comprising: a drill stem, a drill bit and a plurality of stirring blades; the drill bit is arranged at one end of the drill rod; a plurality of stirring vane are close to the drill bit and set up on the drilling rod, and a plurality of stirring vane set gradually along the axis direction of drilling rod, are provided with a plurality of through-holes on the stirring vane, and at least partial stirring vane is along the circumferential direction of drilling rod. In this scheme, be provided with a plurality of through-holes on the stirring vane, set up the through-hole and can filter the great debris of diameter, the less sediment of discharge. At least part of the stirring blades rotate along the circumferential direction of the drill rod, the drill rod drives the rotating stirring blades to move upwards to salvage sundries, other construction machines do not need to be additionally introduced, and cost can be saved and the process can be simplified.
Description
Technical Field
The invention relates to the technical field of construction, in particular to a stirring blade assembly.
Background
In construction engineering, cement-soil mixing piles are widely used for foundation treatment, waterproof curtains and foundation pit support systems due to low manufacturing cost and easy operation, and are generally suitable for stratums such as cohesive soil, silt soil and sand soil. In the gravel stratum, the cement soil mixing pile is drilled slowly, and after the cement soil mixing pile passes through the gravel stratum, slurry circulation is difficult to discharge large-particle-size gravel with high density to the ground surface, and the phenomenon that the large-particle-size gravel is deposited at the bottom of a pile hole can occur, so that a drill bit repeatedly breaks the gravel and a drilling tool is abraded. When the large-particle-size pebble is large, the drill bit cannot drill, and even a buried drilling accident occurs. The above problems result in poor adaptability of the cement-soil mixing pile in gravel stratum.
In order to solve the problem that the adaptability of the cement soil mixing pile in the gravel stratum is poor, the problems can be solved by adopting the modes of hole leading, replacement and filling, rotary drilling, gravel taking and the like, but other construction machines need to be additionally introduced into the solution, so that the process complexity and the difficulty of mutual matching of the construction machines are increased, and meanwhile, the economic cost and the time cost are also increased.
The existing cement soil mixing pile has the problems of high cost, complex process and the like when drilling gravel stones.
Disclosure of Invention
The invention aims to provide a stirring blade assembly to solve the problems of high cost, complex process and the like of the existing cement soil stirring pile drilling gravel stones.
In order to solve the above technical problem, the present invention provides a stirring blade assembly, including:
the drill rod is provided with a drill rod body,
the drill bit is arranged at one end of the drill rod;
the stirring blades are close to the drill bit and arranged on the drill rod, the stirring blades are arranged along the axis direction of the drill rod in sequence, a plurality of through holes are formed in the stirring blades, and at least part of the stirring blades are arranged along the circumferential direction of the drill rod.
In some embodiments of the present invention, the stirring blade assembly further comprises a bushing connected to the drill rod, and the stirring blade is disposed on the drill rod through the bushing.
In some embodiments of the present invention, the shaft sleeve includes a fixed shaft sleeve and a rotating shaft sleeve, the fixed shaft sleeve is fixed on the drill rod, the rotating shaft sleeve rotates relative to the drill rod, the stirring blade includes a fixed stirring blade and a rotating stirring blade, the fixed stirring blade is disposed on the fixed shaft sleeve, and the rotating stirring blade is disposed on the rotating shaft sleeve.
In some embodiments of the present invention, the fixed stirring blade is a first stirring blade, and the rotating stirring blade includes a second stirring blade, a third stirring blade, and a fourth stirring blade.
In some embodiments of the present invention, the fixed stirring blade is located near the drill bit, and the rotating stirring blade is located near the fixed stirring blade.
In some embodiments of the present invention, the stirring blade assembly further includes a limiting column, the limiting column is disposed on the drill rod, and a gap is left between the limiting column and the shaft sleeve, and the limiting column can limit the stirring blade.
In some embodiments of the present invention, the limiting post includes a forward limiting post and a reverse limiting post, the forward limiting post can limit the stirring blade after the stirring blade rotates forward, and the reverse limiting post can limit the stirring blade after the stirring blade rotates reversely.
In some embodiments of the present invention, the stirring blade includes a connection part connected to the boss and a rotation part, the plurality of through holes being provided on the connection part; the rotating part is connected with the connecting part, and the rotating part extends towards the direction far away from the drill bit.
In some embodiments of the present invention, the stirring blade assembly further includes a bushing seat disposed on the drill rod, and the bushing seat is provided with a groove for placing the bushing.
In some embodiments of the present invention, the stirring blade includes a blade net and a blade frame, the blade frame is disposed at an edge of the blade net, and the blade net has a plurality of the through holes.
Furthermore, the device also comprises a pull rod, a sliding seat and a return spring; the sliding seat is arranged in the drill rod in a vertically sliding manner, one end of a pull rod is connected with the sliding seat, and the other end of the pull rod is connected with the stirring blade;
the stirring blade is hinged on the shaft sleeve; the reset spring is arranged in the drill rod, two ends of the reset spring are respectively connected with the sliding seat and the drill rod, the reset spring tends to force the sliding seat to slide upwards, and then the stirring blade is forced to be attached to the drill rod through the pull rod.
When the drill rod rotates at a low speed, the stirring blade is attached to the drill rod under the action of the elastic force of the return spring, so that the resistance of the drill rod during downward drilling is reduced; when the drill rod is drilled into a set depth and sundries such as larger stones need to be filtered and fished, the drill rod is automatically opened by overcoming the elasticity of the return spring through the centrifugal force of the stirring blade by increasing the rotating speed of the drill rod; thereby realizing the effects of filtering and salvaging.
The drill rod is provided with a sliding groove communicated with the inside and the outside, the inner side end of the wing rod is connected with the sliding seat, and the outer side end of the wing rod extends out of the sliding groove and is hinged with the pull rod.
Further, the sliding groove comprises an axial section, a middle arc transition section and a circumferential section; the axial section and the drill rod are arranged in an axial parallel mode, the circumferential section is arranged below the axial section and distributed along the circumferential direction of the drill rod, and two ends of the middle arc-shaped transition section are connected with the axial section and the circumferential section and used for smooth transition of the axial section and the circumferential section.
When the wing rods slide along the axial sections, the stirring blades are unfolded or folded; after the wing rod slides into the circumferential section through the middle arc transition section, the stirring blades are completely unfolded (arranged at an angle of 80-90 degrees with the drill rod) to a set angle; when the wing rods slide along the circumferential sections, the stirring blades keep unfolded and fully unfolded states and can rotate along the circumferential direction of the drill rods. The circumference section can realize that stirring vane expands in circumference and forms comparatively complete annular salvage basket, and is more important, and the circumference section is as a locking structure, can prevent that stirring vane from contracting once more under reset spring's elasticity, and after the wing pole slided into the circumference section, the rotational speed of drilling rod can be adjusted lowly.
More preferably, the stirring blade is spirally inclined, and the included angle between the stirring blade and the horizontal plane (the section perpendicular to the drill rod) is preferably 5-10 degrees.
The small spiral inclination angle does not influence the formation of the annular fishing basket; the soil stirring device has the advantages that soil is stirred, the stirring blades can be unfolded or folded conveniently, and the stirring blades are enabled to be unfolded or folded quickly and effectively by means of geological reverse thrust. For example, when the drill stem is locked or needs to be retracted for a special reason, the drill stem is only required to be reversed, and the wing rods gradually return to the axial section from the circumferential section through the middle arc-shaped transition section, wherein when the drill stem is reversed, the geological reaction force and the return spring cooperate with each other to force the stirring blades to retract and finally abut against the drill stem.
By adopting the technical scheme, the invention has the following beneficial effects:
according to the stirring blade assembly provided by the invention, the stirring blade is provided with the plurality of through holes, and the through holes can filter impurities with larger diameters and discharge smaller slag. At least part of the stirring blades rotate along the circumferential direction of the drill rod, the drill rod drives the rotating stirring blades to move upwards to salvage sundries, other construction machines do not need to be additionally introduced, and cost can be saved and the process can be simplified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic side view of a stirring blade assembly according to embodiment 1 of the present disclosure;
fig. 2 is a schematic side view of a boss of a stirring blade assembly according to embodiment 1 of the present invention;
fig. 3 is a schematic side view of a stirring blade assembly according to embodiment 1 of the present invention;
fig. 4 is a schematic front structural view of a stirring blade of the stirring blade assembly according to embodiment 1 of the present invention;
fig. 5 is a schematic plan view illustrating a stirring blade of the stirring blade assembly according to embodiment 1 of the present invention;
fig. 6 is a schematic view of a forward stirring operation state of a stirring blade assembly according to embodiment 1 of the present invention;
fig. 7 is a schematic view of a reverse stirring operation state of a stirring blade assembly according to embodiment 1 of the present invention;
FIG. 8 is a partial structural view of a drawbar and a slider in embodiment 2;
fig. 9 is a plan development view of the chute.
Reference numerals:
1-drill bit, 2-drill rod, 3-reverse limiting column, 4-first stirring blade, 5-second stirring blade, 6-third stirring blade, 7-fourth stirring blade, 8-blade net, 9-blade frame, 10-shaft sleeve, 11-forward limiting column, 12-shaft sleeve seat, 13-shaft sleeve seat upper component, 14-shaft sleeve seat middle component and 15-shaft sleeve seat lower component.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be further explained with reference to specific embodiments.
Example 1
As shown in fig. 1 to 7, the stirring blade assembly provided in the present embodiment of the invention includes: a drill rod 2, a drill bit 1 and a plurality of stirring blades; the drill bit 1 is arranged at one end of the drill rod 2; a plurality of stirring vane are close to drill bit 1 and set up on drilling rod 2, and a plurality of stirring vane set gradually along the axis direction of drilling rod 2, are provided with a plurality of through-holes on the stirring vane, and at least partial stirring vane is along the circumferential direction of drilling rod 2.
Specifically, the functions of contraction and extension of the stirring blades are realized by utilizing the drag force generated by the slurry when the stirring blades rotate. When the drill rod 2 rotates in the positive direction, the mud drag force drives the multiple layers of blades to be gathered together on a plane, and the soil layer is assisted to be stirred. When the drill rod 2 rotates reversely, the mud drag force drives the multiple layers of blades to spread on the plane to form a basket, when the drill rod is lifted upwards, gravel, sand and the like with small particle sizes can flow out of the basket through the through holes, gravel with large particle sizes can be attached to the rotating blades, and the spread rotating blades can be used for fishing the gravel with large particle sizes deposited at the bottom of the pile body.
In some embodiments of the present invention, the stirring blade assembly further comprises a bushing seat 12 disposed on the drill rod 2, and the bushing seat 12 is provided with a groove for placing the bushing 10.
As shown in fig. 2, the boss 12 includes: the shaft sleeve seat upper component 13, the shaft sleeve seat middle component 14 and the shaft sleeve seat lower component 15 are rigidly connected. The outer contours of the shaft sleeve seat upper component 13, the shaft sleeve seat middle component 14 and the shaft sleeve seat lower component 15 are thick-walled cylinders, and the outer diameter sizes of the cross sections of the shaft sleeve seat upper component 13 and the shaft sleeve seat lower component 15 are larger than that of the cross section of the shaft sleeve seat middle component 14. Since the differently sized recesses are located between the boss upper member 13, the boss middle member 14 and the boss lower member 15, the boss middle member 14 is the same height as the sum of the heights of all the bosses 10 provided. The shaft sleeve 10 is sleeved outside the middle component 14 of the shaft sleeve seat, and the shaft sleeve seat 12 has the function that the groove can limit the shaft sleeve 10 to move along the axial direction of the drill rod 2.
In some embodiments of the present invention, the stirring blade assembly further includes a bushing 10, the bushing 10 is connected to the drill rod 2, and the stirring blade is disposed on the drill rod 2 through the bushing 10.
Specifically, the shaft sleeve 10 is connected to the drill rod 2 through a shaft sleeve seat 12, and the stirring blades are arranged on the shaft sleeve seat 12 through the shaft sleeve 10. The shaft sleeve 10 is provided with a circular hole therein, and the inner diameter of the shaft sleeve 10 is the same as the outer diameter of a shaft sleeve seat middle component 14 of the shaft sleeve seat 12.
In some embodiments of the present invention, the shaft sleeve 10 includes a fixed shaft sleeve 10 and a rotating shaft sleeve 10, the fixed shaft sleeve 10 is fixed on the drill rod 2, the rotating shaft sleeve 10 rotates relative to the drill rod 2, the stirring blades include fixed stirring blades and rotating stirring blades, the fixed stirring blades are disposed on the fixed shaft sleeve 10, and the rotating stirring blades are disposed on the rotating shaft sleeve 10.
Specifically, the rotating stirring blades rotate relative to the shaft sleeve seat 12 of the drill rod 10, the fixed stirring blades do not rotate, and when the drill rod 2 rotates forwards, the shaft sleeve seat 12 rotates forwards along with the drill rod 2, so that the rotating stirring blades and the fixed stirring blades are concentrated together on a plane to assist in stirring the soil layer. When the drill rod 2 rotates reversely, the shaft sleeve seat 12 rotates reversely, the rotating stirring blades rotate under the action of slurry and surround a basket with the fixed stirring blades, and when the drill rod 2 is lifted, pebbles and gravels with large particle sizes or other impurities are attached to the stirring blades, lifted to the ground surface together with the stirring blades and discharged to be discarded.
In some embodiments of the present invention, the fixed stirring blade is the first stirring blade 4, and the rotating stirring blades include the second stirring blade 5, the third stirring blade 6, and the fourth stirring blade 7.
Specifically, as shown in fig. 1, the second stirring blade 5, the third stirring blade 6, and the fourth stirring blade 7 are provided in this order from bottom to top. The first stirring night shift 4 is provided at the bottom of the second stirring blade 5. After forward rotation, the stirring assembly is formed by the forward rotation and the first stirring blade 4, and after reverse rotation, the second stirring blade 5, the third stirring blade 6 and the fourth stirring blade 7 form a slag discharge surface distributed along the circumferential direction of the rotating rod with the first stirring blade 4.
In some embodiments of the invention, the stationary stirring blades are located close to the drill bit 1 and the rotating stirring blades are located close to the stationary stirring blades.
Particularly, the fixed stirring blades are positioned at the bottom of the rotating stirring blades, so that the rotating stirring blades can be conveniently supported, and the strength of the whole structure is increased.
In some embodiments of the present invention, the stirring blade assembly further includes a limiting column, the limiting column is disposed on the shaft sleeve seat 12 of the drill rod 2, and a gap is left between the limiting column and the shaft sleeve 10, and the limiting column can limit the stirring blade.
In some embodiments of the present invention, the limiting posts include a forward limiting post 11 and a reverse limiting post 3, the forward limiting post 11 can limit the stirring blade after the stirring blade rotates forward, and the reverse limiting post 3 can limit the stirring blade after the stirring blade rotates reverse.
Specifically, when the drill rod 2 rotates in the forward direction (counterclockwise in this embodiment), the forward-direction limiting column 11 can limit the stirring blades, and when the drill rod 2 rotates in the reverse direction (clockwise in this embodiment), the slurry drag force drives the multilayer stirring blades to rotate in the reverse direction (counterclockwise in this embodiment) around the shaft sleeve 10 relative to the drill rod 2 and the shaft sleeve seat 12, and rotates to the reverse-direction limiting column 3, and the reverse-direction limiting column 3 can limit the stirring blades.
In some embodiments of the present invention, the agitating blade includes a connecting portion connected with the shaft housing 10 and a rotating portion on which a plurality of through holes are provided; the rotating part is connected with the connecting part and extends towards the direction far away from the drill bit 1.
Specifically, a space for accommodating foreign matters is formed between the rotating part and the connecting part.
As shown in fig. 3, 4 and 5, in some embodiments of the present invention, the stirring blade includes a blade mesh 8 and a blade frame 9, the blade frame 9 is disposed at an edge of the blade mesh 8, and the blade mesh 8 has a plurality of through holes.
Specifically, the setting of blade net 8 is convenient for acquire great debris, sets up simultaneously that blade frame 9 can add intensity.
In some embodiments of the invention, the drill rod 2 is capable of lifting a plurality of stirring blades.
Particularly, the stirring blades rise to the ground surface, so that sundries can be quickly cleaned.
When the stirring blade assembly provided by the invention is used, a cement soil stirring pile drilling machine is assembled, and a shaft sleeve 10, a shaft sleeve seat 12, a plurality of rotating blades and the like are arranged on a drill rod 2. The drill rod 2 drives the shaft sleeve seat 12 and the drill bit 1 to rotate forward to drill into the stratum, so that a plurality of layers of blades (in the embodiment, the total 4 layers of blades comprise a first stirring blade 4, a second stirring blade 5, a third stirring blade 6 and a fourth stirring blade 7) are gathered together on the plane to assist in stirring the soil layer. When the situation that the drilling speed is slow and large-particle-size pebbles are broken by the drill bit 1 repeatedly is found, part of the drill rod 2 is rotated reversely, the multiple layers of blades are unfolded on the plane and form a basket, the pressure of a slurry pump is increased, the large-particle-size pebbles are dragged to be in a suspension state by utilizing slurry fluid sprayed from the drill bit 1, the large-particle-size pebbles are assisted to enter the basket formed by the rotating blades, the drill bit 1 and the drill rod 2 are lifted upwards, small-particle-size gravels and sand are filtered, and the large-particle-size pebbles deposited at the bottom of the pile body are fished up to the ground.
In summary, in the stirring blade assembly provided by the present invention, the stirring blade is provided with a plurality of through holes, and the through holes can filter impurities with larger diameter and discharge smaller slag. At least part of the stirring blades rotate along the circumferential direction of the drill rod, the drill rod drives the rotating stirring blades to move upwards to salvage sundries, other construction machines do not need to be additionally introduced, and cost can be saved and the process can be simplified.
Example 2
The present embodiment has the same basic principle as embodiment 1, except that:
as shown in fig. 8, the present embodiment further includes a pull rod 23, a slide 21, and a return spring 24; the sliding seat 21 is arranged in the cavity of the drill rod 2 in a vertically sliding manner, one end of a pull rod 23 is connected with the sliding seat 21, and the other end of the pull rod 23 is connected with the stirring blade 20;
the stirring blade 20 is hinged on the shaft sleeve 10; the return spring 24 is arranged at two ends in the cavity of the drill rod 2 and is respectively connected with the sliding seat 21 and the drill rod 2, the return spring 24 tends to force the sliding seat 21 to slide upwards, and then the stirring blade 20 is forced to be attached to the drill rod 2 through the pull rod 23.
When the drill rod 2 rotates at a low speed, the stirring blade 20 is attached to the drill rod 2 under the elastic force of the return spring 24, so that the resistance of the drill rod 2 during downward drilling is reduced; when the drill rod 2 is drilled into a set depth and impurities such as larger stones need to be filtered and fished, the drill rod 2 is automatically opened by overcoming the elasticity of the return spring 24 through the centrifugal force of the stirring blade 20 by increasing the rotating speed of the drill rod 2; thereby realizing the effects of filtering and salvaging.
The drilling rod 2 is provided with a sliding groove 2a communicated with the inside and the outside, the inner side end of the wing rod 22 is connected with the sliding seat 21, and the outer side end of the wing rod 22 extends out of the sliding groove 2a and is hinged with the pull rod 23.
With reference to fig. 9, the chute 2a comprises an axial section 2a1, an intermediate arcuate transition section 2a2 and a circumferential section 2a 3; the axial section 2a1 is arranged in parallel with the drill rod 2 in the axial direction, the circumferential section 2a3 is arranged below the axial section 2a1 and is arranged along the circumferential direction of the drill rod 2, and two ends of the middle arc-shaped transition section 2a2 are connected with the axial section 2a1 and the circumferential section 2a3 for smooth transition of the two sections.
When the wing rods 22 slide along the axial section 2a1, the stirring vanes 20 are deployed or retracted; after the wing rod 22 slides into the circumferential section 2a3 through the middle arc-shaped transition section 2a2, the stirring blade 20 is fully unfolded (arranged at an angle of 80-90 degrees with the drill rod 2) to a set angle; when the wing bars 22 slide along the circumferential section 2a3, the stirring blades 20 remain deployed in a fully deployed state and can rotate circumferentially along the drill rod 2. The circumferential section 2a3 can realize that the stirring blade 20 expands in the circumferential direction to form a complete annular fishing basket, and more importantly, the circumferential section 2a3 serves as a locking structure to prevent the stirring blade 20 from contracting again under the elastic force of the return spring 24, and after the wing rod 22 slides into the circumferential section 2a3, the rotation speed of the drill rod 2 can be adjusted to be low.
More preferably, the stirring blade 20 is inclined in a spiral shape, and an included angle between the stirring blade 20 and a horizontal plane (a cross section perpendicular to the drill rod 2) is 5-10 degrees. The small spiral inclination angle does not influence the formation of the annular fishing basket; the beneficial effects are that the soil is turned, the unfolding or folding of the stirring blades 20 is facilitated, and the reverse thrust of the geology is used for promoting the stirring blades 20 to be unfolded or folded quickly and effectively. For example, when a jam occurs or for any particular reason the mixing blade 20 needs to be retracted, the drill rod 2 is simply reversed and the flight 22 is gradually withdrawn from the circumferential section 2a3 through the intermediate arcuate transition section 2a2 to the axial section 2a1, wherein the reaction force of the formation and the return spring 24 cooperate to force the mixing blade 20 to retract and eventually abut the drill rod 2 when the drill rod 2 is reversed.
Different from embodiment 1, in this embodiment, because the stirring blades can be retracted, the stirring blades do not need to be stacked in advance in the circumferential direction, the lower ends of all the stirring blades are hinged to the same shaft sleeve 10, the stirring blades are arranged in one-to-one correspondence with the pull rods and the sliding grooves, and the upper ends of all the pull rods are connected with the same sliding seat through the wing rods respectively. Preferably, a limiting structure used for limiting the circumferential rotation angle of the shaft sleeve is arranged between the drill rod and the shaft sleeve.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An agitating blade assembly, comprising:
the drill rod is provided with a drill rod body,
the drill bit is arranged at one end of the drill rod;
the stirring blades are close to the drill bit and arranged on the drill rod, the stirring blades are arranged along the axis direction of the drill rod in sequence, a plurality of through holes are formed in the stirring blades, and at least part of the stirring blades are arranged along the circumferential direction of the drill rod.
2. The stirring blade assembly of claim 1, further comprising a bushing connected to the drill rod, the stirring blade being disposed on the drill rod through the bushing.
3. The stirring blade assembly of claim 2, wherein the bushing comprises a fixed bushing fixed to the drill rod and a rotating bushing that rotates relative to the drill rod, and wherein the stirring blade comprises a fixed stirring blade disposed on the fixed bushing and a rotating stirring blade disposed on the rotating bushing.
4. The stirring blade assembly of claim 3, wherein the stationary stirring blade is a first stirring blade, and the rotating stirring blade comprises a second stirring blade, a third stirring blade, and a fourth stirring blade.
5. The stirring blade assembly of claim 3, wherein the stationary stirring blade is located proximate to the drill bit and the rotating stirring blade is proximate to the stationary stirring blade.
6. The stirring blade assembly of claim 2, further comprising a limiting post disposed on the drill rod and spaced apart from the bushing, wherein the limiting post is capable of limiting the stirring blade.
7. The stirring blade assembly of claim 6, wherein the limiting posts comprise a forward limiting post and a reverse limiting post, the forward limiting post can limit the stirring blade after the stirring blade rotates forward, and the reverse limiting post can limit the stirring blade after the stirring blade rotates reversely.
8. The stirring blade assembly of claim 2, wherein the stirring blade comprises a connecting portion and a rotating portion, the connecting portion being connected with the bushing, the plurality of through holes being provided on the connecting portion; the rotating part is connected with the connecting part, and the rotating part extends towards the direction far away from the drill bit.
9. The stirring blade assembly of claim 2, further comprising a bushing seat disposed on the drill rod, the bushing seat having a recess for receiving the bushing.
10. The stirring blade assembly of claim 1, wherein the stirring blade comprises a blade mesh and a blade frame, the blade frame being disposed at an edge of the blade mesh, the blade mesh having a plurality of the through holes thereon.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111023159.1A CN113668518B (en) | 2021-09-01 | 2021-09-01 | Stirring blade assembly |
| CN202210752905.9A CN115094878B (en) | 2021-09-01 | 2021-09-01 | Stirring vane assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111023159.1A CN113668518B (en) | 2021-09-01 | 2021-09-01 | Stirring blade assembly |
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| CN202210752905.9A Division CN115094878B (en) | 2021-09-01 | 2021-09-01 | Stirring vane assembly |
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| CN113668518A true CN113668518A (en) | 2021-11-19 |
| CN113668518B CN113668518B (en) | 2022-07-22 |
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| CN202210752905.9A Active CN115094878B (en) | 2021-09-01 | 2021-09-01 | Stirring vane assembly |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3135953A1 (en) * | 1980-09-12 | 1982-04-29 | Christensen, Inc., 84115 Salt Lake City, Utah | "SCREEN INSERT FOR A TURNING DRILL BIT OR A SIMILAR TOOL FOR MAKING DEEP DRILL HOLES" |
| CN201738310U (en) * | 2010-08-02 | 2011-02-09 | 武汉高铁桩工科技有限公司 | Piling machine for stirring and injecting lime-sand pile |
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Also Published As
| Publication number | Publication date |
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| CN115094878B (en) | 2023-11-24 |
| CN113668518B (en) | 2022-07-22 |
| CN115094878A (en) | 2022-09-23 |
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