CN115094878B - Stirring vane assembly - Google Patents
Stirring vane assembly Download PDFInfo
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- CN115094878B CN115094878B CN202210752905.9A CN202210752905A CN115094878B CN 115094878 B CN115094878 B CN 115094878B CN 202210752905 A CN202210752905 A CN 202210752905A CN 115094878 B CN115094878 B CN 115094878B
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- drill rod
- stirring
- rod
- drill
- stirring blade
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- 238000003756 stirring Methods 0.000 title claims abstract description 195
- 238000005553 drilling Methods 0.000 claims abstract description 17
- 230000007704 transition Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 3
- 239000002689 soil Substances 0.000 description 10
- 239000004568 cement Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Paleontology (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present application provides a stirring vane 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; the stirring blades are arranged on the drill rod close to the drill bit, the stirring blades are sequentially arranged along the axial direction of the drill rod, the stirring blades are provided with a plurality of through holes, and at least part of the stirring blades rotate along the circumferential direction of the drill rod. The device also comprises a pull rod, a sliding seat and a return spring; the return spring tends to force the slide upwards, which in turn forces the stirring blade against the drill rod via the tie rod. When the drill rod rotates at a low speed, the stirring blade is abutted against the drill rod under the action of the elasticity of the reset spring, so that the resistance of the drill rod in the downward drilling process is reduced; when the drill rod drills into a set depth and impurities such as larger stones are needed to be filtered and fished, the centrifugal force of the stirring blade is utilized to overcome the elasticity of the reset spring and automatically open the drill rod by increasing the rotating speed of the drill rod; thereby realizing the filtering and salvaging effects.
Description
Technical Field
The application relates to the technical field of construction, in particular to a stirring vane assembly.
Background
In the construction engineering, the cement mixing pile is widely used for foundation treatment, waterproof curtain and foundation pit enclosure system with low cost and easy operation, and is generally applicable to stratum such as cohesive soil, silt soil, sand soil and the like. In a gravel stratum, a cement soil stirring pile drills slowly, and after penetrating through the gravel stratum, slurry circulation is difficult to discharge large-grain-size gravel with high density to the ground surface, so that the phenomenon that the large-grain-size gravel is precipitated at the bottom of a pile hole can occur, and a drill bit repeatedly breaks the gravel and a drilling tool is worn. When the large-grain-size gravel is more, the drill bit can not drill, and even the buried drilling accident occurs. The above problems result in poor adaptability of the soil cement mixing pile in the gravel formation.
In order to solve the problem of poor adaptability of the cement mixing pile in the gravel stratum, the problems of hole guiding, filling, rotary drilling, gravel taking and the like can be solved, but other construction machinery is additionally introduced in the method, the complexity of the process and the difficulty of the mutual matching of the construction machinery are increased, and meanwhile, the economic cost and the time cost are also increased.
The existing cement mixing pile drilling gravel has the problems of high cost, complex process and the like.
Disclosure of Invention
The application aims to provide a stirring blade assembly to solve the problems of high cost, complex process and the like in the conventional cement-soil stirring pile drilling of gravel. The application is a divisional application with the application number of 2021110231591 and the application date of 2021, 9 and 1, and the name of a stirring blade assembly.
In order to solve the above technical problems, the stirring vane assembly provided by the present application includes:
the drill rod is used for the drilling of the drill rod,
the drill bit is arranged at one end of the drill rod;
the stirring device comprises a drill rod, a plurality of stirring blades, a plurality of drill heads and a plurality of stirring blades, wherein the stirring blades are close to the drill head and are arranged on the drill rod, the stirring blades are sequentially arranged along the axial direction of the drill rod, a plurality of through holes are formed in the stirring blades, and at least part of the stirring blades rotate along the circumferential direction of the drill rod.
In some embodiments of the application, the stirring vane assembly further comprises a sleeve connected to the drill pipe, the stirring vane being disposed on the drill pipe through the sleeve.
In some embodiments of the present application, the shaft sleeve includes a fixed shaft sleeve and a rotating shaft sleeve, the fixed shaft sleeve is fixed on the drill pipe, the rotating shaft sleeve rotates relative to the drill pipe, 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 application, 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 application, the stationary stirring blade is located near the drill bit and the rotating stirring blade is near the stationary stirring blade.
In some embodiments of the present application, the stirring vane assembly further includes a limiting post, where the limiting post is disposed on the drill pipe and is spaced from the shaft sleeve, and the limiting post is capable of limiting the stirring vane.
In some embodiments of the present application, the limiting post includes a forward limiting post and a reverse limiting post, the forward limiting post is capable of limiting the stirring blade after the stirring blade rotates forward, and the reverse limiting post is capable of limiting the stirring blade after the stirring blade rotates reversely.
In some embodiments of the present application, the stirring vane includes a connection part and a rotation part, the connection part is connected with the shaft sleeve, and the plurality of through holes are arranged on the connection part; the rotating part is connected with the connecting part and extends in a direction away from the drill bit.
In some embodiments of the application, the stirring vane assembly further comprises a bushing block provided on the drill rod, the bushing block being provided with a groove for placing the bushing.
In some embodiments of the application, the stirring blade comprises a blade mesh and a blade frame, the blade frame being arranged at the edge of the blade mesh, the blade mesh having a plurality of the through holes.
Further, the device also comprises a pull rod, a sliding seat and a return spring; the sliding seat can be arranged in the drill rod in a vertical sliding way, one end of the 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, and the reset spring tends to force the sliding seat to slide upwards, so that the stirring blade is forced to be abutted against the drill rod through the pull rod.
When the drill rod rotates at a low speed, the stirring blade is abutted against the drill rod under the action of the elasticity of the reset spring, so that the resistance of the drill rod in the downward drilling process is reduced; when the drill rod drills into a set depth and impurities such as larger stones are needed to be filtered and fished, the centrifugal force of the stirring blade is utilized to overcome the elasticity of the reset spring and automatically open the drill rod by increasing the rotating speed of the drill rod; thereby realizing the filtering and salvaging effects.
Further, the drill rod is provided with a sliding groove for communicating 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 chute comprises an axial section, a middle arc-shaped transition section and a circumferential section; the axial section with drilling rod axial parallel arrangement, circumference section setting is in axial section below and is laid along the circumference of drilling rod, middle arc changeover portion both ends are connected with axial section and circumference section for both smooth transition.
When the wing rod slides along the axial section, the stirring blade is unfolded or folded; after the wing rods slide into the circumferential section through the middle arc-shaped transition section, the stirring blades are fully unfolded (arranged at 80-90 degrees with the drill rod) to a set angle; when the wing rods slide along the circumferential sections, the stirring blades keep a fully unfolded state and can rotate along the circumferential direction of the drill rod. The circumferential section can realize that stirring vane expands in the circumference and forms comparatively complete annular basket, and more importantly, the circumferential section is as a locking structure, can prevent that stirring vane from contracting again under reset spring's elasticity, and after the wing rod slipped into the circumferential section, the rotational speed of drilling rod is adjustable low.
More preferably, the stirring blades are spirally and obliquely arranged, and preferably, the included angle between the stirring blades and the horizontal plane (the section perpendicular to the drill rod) is 5-10 degrees.
The smaller spiral inclination angle does not influence the formation of the annular fishing basket; the stirring blade has the advantages that the stirring blade turns the soil, and is beneficial to unfolding or folding of the stirring blade, and the stirring blade is promoted to be unfolded or folded rapidly and effectively by means of the reverse thrust of geology. For example, when jamming occurs or the special reason requires that the stirring blade is retracted, only the drill rod needs to be reversed, the wing rod gradually withdraws from the circumferential section to the axial section through the middle arc-shaped transition section, wherein when the drill rod is reversed, the spiral inclination angle of the stirring blade, the reaction force of geology and the return spring cooperate to force the stirring blade to shrink and finally lean against the drill rod.
By adopting the technical scheme, the application has the following beneficial effects:
in the stirring vane assembly provided by the application, the stirring vane is provided with the through holes, and the through holes can filter sundries 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 stirring blades to move upwards to scoop sundries after rotating, other construction machinery is not required 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 application or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the application and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic side view of a stirring vane assembly according to embodiment 1 of the present application;
FIG. 2 is a schematic side view of a bushing block in a stirring vane assembly according to embodiment 1 of the present application;
FIG. 3 is a schematic side view of a stirring blade in the stirring blade assembly according to embodiment 1 of the present application;
fig. 4 is a schematic front view of a stirring blade in the stirring blade assembly according to embodiment 1 of the present application;
fig. 5 is a schematic plan view of a stirring blade in the stirring blade assembly according to embodiment 1 of the present application;
FIG. 6 is a schematic view showing a forward stirring operation of the stirring vane assembly according to embodiment 1 of the present application;
FIG. 7 is a schematic view showing a reverse stirring operation of the stirring vane assembly according to embodiment 1 of the present application;
fig. 8 is a schematic view showing a partial structure of a drawbar and a slider in embodiment 2;
fig. 9 is a plan expanded view of the chute.
Reference numerals:
1-drill bit, 2-drill rod, 3-reverse spacing post, 4-first stirring vane, 5-second stirring vane, 6-third stirring vane, 7-fourth stirring vane, 8-blade net, 9-blade frame, 10-axle sleeve, 11-forward spacing post, 12-axle sleeve seat, 13-axle sleeve seat upper component, 14-axle sleeve seat middle component, 15-axle sleeve seat lower component.
Detailed Description
The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. 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 application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The application is further illustrated with reference to specific embodiments.
Example 1
As shown in fig. 1 to 7, the stirring vane assembly provided by the present embodiment 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; the stirring blades are arranged on the drill rod 2 close to the drill bit 1, the stirring blades are sequentially arranged along the axial direction of the drill rod 2, a plurality of through holes are formed in the stirring blades, and at least part of the stirring blades rotate along the circumferential direction of the drill rod 2.
Specifically, the contraction and expansion functions of the stirring blade are achieved by using the drag force generated by the mud itself when the stirring blade rotates. When the drill rod 2 rotates positively, the mud drag force drives the multi-layer blades to be concentrated 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 multi-layer blades to spread on a plane to form a basket, when the drill rod is lifted upwards, small-particle-size gravels, sand and the like can flow out of the basket through the through holes, large-particle-size gravels can be attached to the rotating blades, and the spread rotating blades can be used for fishing the large-particle-size gravels deposited at the bottom of the pile body.
In some embodiments of the application, the stirring vane assembly further comprises a bushing block 12 provided on the drill rod 2, the bushing block 12 being provided with a recess for the placement of the bushing 10.
As shown in fig. 2, the boss 12 includes: the upper component 13, the middle component 14 and the lower component 15 are rigidly connected. The outer contours of the boss upper member 13, the boss middle member 14, and the boss lower member 15 are thick-walled cylinders, and the cross-sectional outer diameter dimensions of the boss upper member 13 and the boss lower member 15 are larger than the cross-sectional outer diameter dimensions of the boss middle member 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 in height as the sum of all the bosses 10 provided. The sleeve 10 is sleeved outside the sleeve seat middle component 14, and the sleeve seat 12 has the function of a groove capable of limiting the sleeve 10 to move along the axial direction of the drill rod 2.
In some embodiments of the application, the stirring vane assembly further comprises a sleeve 10, the sleeve 10 being connected to the drill rod 2, the stirring vanes being arranged on the drill rod 2 via the sleeve 10.
Specifically, the bushing 10 is connected to the drill rod 2 through the bushing boss 12, and the stirring vane is provided on the bushing boss 12 through the bushing 10. The sleeve 10 has a circular bore therein, the sleeve 10 having an inner diameter equal to the outer diameter of the sleeve mount midsection 14 of the sleeve mount 12.
In some embodiments of the present application, the sleeve 10 includes a fixed sleeve 10 and a rotating sleeve 10, the fixed sleeve 10 is fixed on the drill pipe 2, the rotating sleeve 10 rotates relative to the drill pipe 2, the stirring vane includes a fixed stirring vane and a rotating stirring vane, the fixed stirring vane is disposed on the fixed sleeve 10, and the rotating stirring vane is disposed on the rotating sleeve 10.
Specifically, the rotary stirring vane rotates relative to the bushing block 12 of the drill rod 10, the fixed stirring vane does not rotate, and when the drill rod 2 rotates forward, the bushing block 12 rotates forward along with the drill rod 2, so that the plurality of rotary stirring vanes and the fixed stirring vane are concentrated together on the plane to assist in stirring the soil layer. When the drill rod 2 rotates reversely, the shaft sleeve seat 12 rotates reversely, the plurality of rotary stirring blades rotate under the action of mud and encircle the fixed stirring blades to form a basket, and when the drill rod 2 is lifted, the large-particle-size gravel or other sundries are attached to the stirring blades, lifted to the ground surface together with the stirring blades and discharged for disposal.
In some embodiments of the application, the fixed stirring blade is a first stirring blade 4, and the rotating stirring blade comprises a second stirring blade 5, a third stirring blade 6 and a 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 arranged at the bottom of the second stirring blade 5. The second stirring blade 5, the third stirring blade 6 and the fourth stirring blade 7 form a slag discharging surface distributed along the circumference of the rotating rod with the first stirring blade 4 after rotating in the forward direction.
In some embodiments of the application, the stationary stirring blade is located close to the drill bit 1 and the rotating stirring blade is close to the stationary stirring blade.
Specifically, fixed stirring vane is located the bottom of rotating stirring vane, can be convenient for support rotating stirring vane, increases the intensity of whole structure.
In some embodiments of the present application, the stirring vane assembly further includes a limiting post, which is disposed on the bushing seat 12 of the drill rod 2, and is spaced from the bushing 10, and the limiting post can limit the stirring vane.
In some embodiments of the present application, the limiting posts include a forward limiting post 11 and a reverse limiting post 3, and after the stirring blade rotates forward, the forward limiting post 11 can limit the stirring blade, and after the stirring blade rotates reversely, the reverse limiting post 3 can limit the stirring blade.
Specifically, when the drill rod 2 rotates forward (anticlockwise in this embodiment), the forward limiting post 11 can limit the stirring blade, and when the drill rod 2 rotates reversely (clockwise in this embodiment), the mud drag force drives the multi-layer stirring blade to rotate reversely (anticlockwise in this embodiment) around the shaft sleeve 10 relative to the drill rod 2 and the shaft sleeve seat 12, and rotate to the reverse limiting post 3, and the reverse limiting post 3 can limit the stirring blade.
In some embodiments of the present application, the stirring vane includes a connection part connected with the shaft sleeve 10 and a rotation part on which a plurality of through holes are provided; the rotating part is connected with the connecting part, and extends in a direction away from the drill bit 1.
Specifically, a space for accommodating sundries is formed between the rotating part and the connecting part.
As shown in fig. 3, 4 and 5, in some embodiments of the present application, the stirring blade includes a blade mesh 8 and a blade frame 9, the blade frame 9 being disposed at an edge of the blade mesh 8, and the blade mesh 8 having a plurality of through holes.
In particular, the provision of the blade mesh 8 facilitates the acquisition of larger impurities, while the provision of the blade frame 9 enables an increase in strength.
In some embodiments of the application, the drill rod 2 is capable of lifting a plurality of stirring vanes.
Specifically, the stirring blade rises to the ground surface, so that sundries can be cleaned quickly.
When the stirring vane assembly provided by the application is used, the cement mixing pile drilling machine is assembled, and the shaft sleeve 10, the shaft sleeve seat 12, the plurality of rotating vanes and the like are arranged on the 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 (4 layers of blades in the embodiment comprise a first stirring blade 4, a second stirring blade 5, a third stirring blade 6 and a fourth stirring blade 7) are concentrated together on a plane to assist in stirring the stratum. When the drilling speed is found to be slower and the condition that the drill bit 1 repeatedly breaks the pebbles with large grain sizes possibly exists, the drill rod 2 rotates in the reverse direction, the multiple layers of blades are unfolded on a plane to form a basket, the pressure of slurry pump is increased, slurry fluid sprayed on the drill bit 1 is utilized to drag the pebbles with large grain sizes to a suspension state, the large grain sizes are assisted to enter the basket formed by the rotating blades, the drill bit 1 and the drill rod 2 are lifted upwards, gravel and sand with small grain sizes are filtered, and the large grain sizes of the pebbles deposited at the bottom of the pile body are fished to the ground.
In summary, in the stirring vane assembly provided by the application, the stirring vane is provided with the plurality of through holes, and the through holes can filter sundries 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 stirring blades to move upwards to scoop sundries after rotating, other construction machinery is not required to be additionally introduced, and cost can be saved and the process can be simplified.
Example 2
The basic principle of this embodiment is the same as that of embodiment 1, except that:
as shown in fig. 8, the present embodiment further includes a pull rod 23, a slider 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 the 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 vane 20 is hinged on the shaft sleeve 10; the return springs 24 are arranged in the cavity of the drill rod 2 and are respectively connected with the sliding seat 21 and the drill rod 2, and the return springs 24 tend to force the sliding seat 21 to slide upwards so as to force the stirring blades 20 to be abutted against the drill rod 2 through the pull rods 23.
When the drill rod 2 rotates at a low speed, the stirring blade 20 is abutted against the drill rod 2 under the action of the elastic force of the return spring 24, so that the resistance of the drill rod 2 in the downward drilling process is reduced; when the drill rod 2 is drilled into a set depth and sundries such as larger stones are required to be filtered and fished, the centrifugal force of the stirring blade 20 is utilized to overcome the elastic force of the reset spring 24 and automatically open by increasing the rotating speed of the drill rod 2; thereby realizing the filtering and salvaging effects.
The embodiment further comprises a wing rod 22, wherein a chute 2a for communicating the inside and the outside is arranged on the drill rod 2, 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 chute 2a and is hinged with the pull rod 23.
Referring to fig. 9, the chute 2a includes an axial section 2a1, a middle arcuate transition section 2a2, and a circumferential section 2a3; the axial section 2a1 is axially parallel to the drill rod 2, the circumferential section 2a3 is arranged below the axial section 2a1 and is distributed 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 axial section 2a1 and the circumferential section 2a 3.
As the wing bar 22 slides along the axial segment 2a1, the stirring blade 20 expands or retracts; after the wing rods 22 slide into the circumferential sections 2a3 through the middle arc-shaped transition sections 2a2, the stirring blades 20 are fully unfolded (arranged at 80-90 degrees with the drill rod 2) to a set angle; the stirring blade 20 remains unfolded in the fully unfolded state and can rotate circumferentially along the drill rod 2 as the wing rods 22 slide along the circumferential section 2a 3. The circumferential section 2a3 can realize that the stirring vane 20 is unfolded in the circumferential direction to form a relatively complete annular fishing basket, more importantly, the circumferential section 2a3 is used as a locking structure, the stirring vane 20 can be prevented from being contracted again under the elasticity of the return spring 24, and when the wing rod 22 slides into the circumferential section 2a3, the rotating speed of the drill rod 2 can be regulated to be low.
More preferably, the stirring blades 20 are spirally and obliquely arranged, and the included angle between the stirring blades 20 and the horizontal plane (the section perpendicular to the drill rod 2) is 5-10 degrees. The smaller spiral inclination angle does not influence the formation of the annular fishing basket; the stirring blade has the advantages of turning the soil, being beneficial to the unfolding or folding of the stirring blade 20, and promoting the stirring blade 20 to be unfolded or folded rapidly and effectively by means of the reverse thrust of geology. For example, when a seizing occurs or the stirring blade 20 is required to be retracted for a specific reason, it is only necessary to reverse the drill rod 2, the wing rod 22 gradually retreats from the circumferential section 2a3 to the axial section 2a1 via the intermediate arcuate transition section 2a2, wherein the helical inclination angle of the stirring blade 20 forces the stirring blade 20 to contract and finally to abut against the drill rod 2 in cooperation with the reaction force of geology and the return spring 24 when the drill rod 2 is reversed.
Unlike embodiment 1, in this embodiment, since 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 on 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 wing rods respectively. Preferably, a limiting structure 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 for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (4)
1. A stirring vane assembly, comprising:
the drill rod is used for the drilling of the drill rod,
the drill bit is arranged at one end of the drill rod;
the stirring blades are arranged on the drill rod close to the drill bit, the stirring blades are sequentially arranged along the axial direction of the drill rod, the stirring blades are provided with a plurality of through holes, and at least part of the stirring blades rotate along the circumferential direction of the drill rod; the stirring vane assembly further comprises a shaft sleeve, the shaft sleeve is connected to the drill rod, and the stirring vane is arranged on the drill rod through the shaft sleeve;
the device also comprises a pull rod, a sliding seat and a return spring; the sliding seat can be arranged in the drill rod in a vertical sliding way, one end of the 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 springs are arranged at two ends in the drill rod and are respectively connected with the sliding seat and the drill rod, the reset springs tend to force the sliding seat to slide upwards, and then the stirring blades are forced to be abutted against the drill rod through the pull rods;
the drill rod is provided with a sliding groove for communicating 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;
the sliding chute comprises an axial section, a middle arc-shaped transition section and a circumferential section; the axial section with drilling rod axial parallel arrangement, circumference section setting is in axial section below and is laid along the circumference of drilling rod, middle arc changeover portion both ends are connected with axial section and circumference section for both smooth transition.
2. The stirring blade assembly of claim 1, wherein the stirring blade is helically inclined.
3. The stirring blade assembly of claim 2, wherein the stirring blade is angled between 5 and 10 degrees from horizontal.
4. The stirring blade assembly of claim 1, wherein a limit structure for defining a circumferential rotation angle of the sleeve is disposed between the drill stem and the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210752905.9A CN115094878B (en) | 2021-09-01 | 2021-09-01 | Stirring vane assembly |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210752905.9A CN115094878B (en) | 2021-09-01 | 2021-09-01 | Stirring vane assembly |
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| CN113668518A (en) | 2021-11-19 |
| CN113668518B (en) | 2022-07-22 |
| CN115094878A (en) | 2022-09-23 |
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