CN214089839U

CN214089839U - Drill bit of pile machine for rotary cast-in-situ bored pile

Info

Publication number: CN214089839U
Application number: CN202023105044.0U
Authority: CN
Inventors: 周巨辉; 尹吉明
Original assignee: Maanshan Iron & Steel Construction Group Co ltd
Current assignee: Maanshan Iron & Steel Construction Group Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-08-31
Anticipated expiration: 2030-12-21

Abstract

The utility model discloses a pile machine drill bit of rotary drilling bored concrete pile belongs to bored concrete pile construction equipment technical field. It includes drilling rod, pterygoid lamina and protective shroud, the pterygoid lamina includes the multiunit, and it installs on the drilling rod and along the circumferencial direction evenly distributed of drilling rod, the protective shroud is installed in the pterygoid lamina outer end, it has the multiunit to stir garrulous wire rope along its axis direction evenly spaced distribution on the drilling rod, and every group stirs garrulous wire rope and includes a plurality of wire rope along the circumferencial direction evenly distributed of drilling rod. Adopt the technical scheme of the utility model can avoid the drill bit to take place to paste the brill phenomenon betterly, improve its pore-forming efficiency, also effectively improve the construction quality and the efficiency of construction of drilling bored concrete pile simultaneously, reduce construction period, the practicality is good.

Description

Drill bit of pile machine for rotary cast-in-situ bored pile

Technical Field

The utility model belongs to the technical field of bored concrete pile construction equipment, more specifically the utility model relates to a pile machine drill bit is bored in gyration.

Background

In recent years, with the emergence of large-scale industry, civil buildings, high-rise buildings and other projects, the natural foundation can not meet the load requirement, and the rotary drilling cast-in-place pile becomes a foundation form frequently adopted in the building project due to the advantages of strong adaptability, large bearing capacity, moderate cost, simple and convenient construction and the like.

At present, when a drill bit of a traditional rotary cast-in-place pile machine drills in powdery clay (especially hard plastic powdery clay), the drill bit is easy to generate a drill pasting phenomenon, so that the drill bit has to be lifted and cleaned and then the rod is connected again to drill, and the hole forming efficiency is low; and because the stickness of powder clay is strong, need to spend 1 ~ 2 hours after the pore-forming and sweep the hole once more, and adopt traditional bored concrete pile machine drill bit to be difficult to turn into mud with whole powder clay, partial clay can form the mud ball, lead to the secondary to clear away the mud ball is whole when clearing the hole hardly, thereby produce a large amount of sediment, consequently take place easily in the concrete pours into and float the cage, disconnected stake, press from both sides mud, phenomenons such as sandwich, not only the efficiency of construction is low, the construction period is long, and construction quality also is difficult to control.

Through retrieval, relevant patents about drill bits of cast-in-situ bored piles are disclosed. For example, the chinese patent application No. 201510769420.0 discloses a slag discharge promoting device for super-thick clay layer positive circulation cast-in-place pile and a construction method thereof, the device comprises a stirring steel wire rope bundle, a steel wire rope clamp, a fixing pressing strip and a drill rod, wherein the stirring steel wire rope bundle is composed of a plurality of steel wire ropes, each steel wire rope is connected into a ring shape through the steel wire rope clamp, the stirring steel wire rope bundle is sequentially fixed on the drill rod through the fixing pressing strip, and the steel wire rope bundle is symmetrically arranged along the drill rod in two rows. The invention effectively improves the slag discharge capability and the drilling efficiency of the drilling of the positive circulation construction process in the ultra-thick clay layer. Although the application can improve the slag discharge capacity and the drilling efficiency to a certain extent, the application cannot effectively solve the problem of stuck drilling during construction, and the overall design of the application needs to be further improved.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

The utility model aims to solve and adopt traditional bored concrete pile machine drill bit when drilling in powder clay, its pore-forming efficiency and efficiency of construction are lower, and construction period is longer, and the problem that construction quality is also hard to control provides a pile machine drill bit of rotary bored concrete pile. Adopt the technical scheme of the utility model can avoid the drill bit to take place to paste the brill phenomenon betterly, improve its pore-forming efficiency, also effectively improve the construction quality and the efficiency of construction of drilling bored concrete pile simultaneously, reduce construction period, the practicality is good.

2. Technical scheme

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:

the utility model discloses a pile machine drill bit is bored in gyration, including drilling rod, pterygoid lamina and protective shroud, the pterygoid lamina includes the multiunit, and it installs on the drilling rod and along the circumferencial direction evenly distributed of drilling rod, the protective shroud is installed in the pterygoid lamina outer end, it has multiunit to stir garrulous wire rope to distribute along its axis direction evenly spaced on the drilling rod, and every group stirs garrulous wire rope and includes a plurality of wire rope along the circumferencial direction evenly distributed of drilling rod.

As the utility model discloses a rotary drilling bored concrete pile stake machine drill bit's an improvement, the protective shroud includes the multistage, its quantity and pterygoid lamina phase-match, and this protective shroud correspondence is installed in the pterygoid lamina outer end and is enclosed into a ring, and is equipped with the slag notch between the adjacent protective shroud.

As an improvement of the drill bit of the rotary cast-in-situ bored pile machine of the utility model, the inclined opening is processed at the corresponding position of the two ends of each protective ring and the slag discharge opening.

As the utility model discloses a pile machine drill bit's improvement is bored in gyration drilling, the pterygoid lamina includes pterygoid lamina and lower pterygoid lamina, goes up pterygoid lamina one end and links together with lower pterygoid lamina one end, and its other end corresponds respectively and installs on the drilling rod, the protective shroud is installed in the outside of last pterygoid lamina and lower pterygoid lamina junction.

As an improvement of the drill bit of the rotary cast-in-situ bored pile machine of the utility model, the outer side uniform spacing distribution of the lower wing plate is provided with a plurality of drilling teeth.

As the utility model discloses a rotary drilling bored concrete pile stake machine drill bit's an improvement, the excircle radius phase-match of the ring is enclosed into with the protective shroud to the length of stirring garrulous wire rope.

As the utility model discloses a rotary drilling bored concrete pile stake machine drill bit's an improvement, the upper end of drilling rod is equipped with the ring flange, and its lower extreme is connected with the drill point.

As the utility model discloses a rotary drilling bored concrete pile stake machine drill bit's an improvement, the bottom both sides evenly spaced distribution of drill point has a plurality of brill teeth.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a pile machine drill bit is bored in gyration, it has multiunit stirring wire rope to distribute through along its axis direction evenly spaced on the drilling rod, and with every group stirring wire rope along the circumferencial direction evenly distributed of drilling rod, thereby when using this drill bit to creep into in powder clay, can smash the mud group that is difficult to turn into mud and form mud, sediment thickness and mud concentration when guaranteeing twice clear hole, avoid taking place the floating cage, broken pile, press from both sides mud, phenomenons such as sandwich, construction quality and efficiency of construction have effectively been improved, construction period has been reduced, the phenomenon that the drill bit took place to paste the brill has also effectively been improved in the setting of stirring simultaneously wire rope, thereby pore-forming efficiency has been improved, its whole construction cost is lower, the practicality is good.

(2) The utility model relates to a pile machine drill bit is bored in gyration, the protective shroud includes the multistage, and is equipped with the scum mouth between the adjacent protective shroud, through setting up the scum mouth to can when the drill bit creeps into the silty clay, the silty clay that will stir garrulous wire rope and stir garrulous is discharged from the scum mouth, makes the unable parcel of silty clay in the protective shroud, thereby can't produce and paste the brill phenomenon, has further effectively improved the pore-forming efficiency of drill bit. Inclined openings are processed at the positions, corresponding to the slag discharge openings, of the two ends of each section of protective ring, so that the quality of the protective wall can be ensured, and the phenomena of hole collapse and the like can be prevented.

(3) The utility model relates to a pile machine drill bit is bored in gyration, the excircle radius phase-match of ring is enclosed into with the protective shroud to the length of stirring garrulous wire rope to guaranteed the size of former drilling betterly, avoided carrying out the large tracts of land destruction to former drilling, it is simple and convenient to resume. The upper end of the drill rod is provided with a flange plate for connecting a drilling machine; the lower extreme of drilling rod is equipped with the drill point, and drill point bottom both sides and the lower aerofoil outside all evenly spaced distribution have a plurality of brill teeth to can cut powder matter clay when the drill bit creeps into, so that the pore-forming.

Drawings

Fig. 1 is a schematic front sectional view of a drill of a pile driver for a convolute cast-in-situ bored pile of the present invention;

fig. 2 is the utility model discloses a overlook schematic structure diagram of gyration drilling bored concrete pile stake machine drill bit.

In the figure: 1. a drill stem; 2. a flange plate; 3. a wing plate; 31. an upper wing plate; 32. a lower wing plate; 4. a retainer; 41. a slag discharge port; 42. a bevel opening; 5. drilling teeth; 6. drilling a tip; 7. and (4) crushing the steel wire rope.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

Example 1

As shown in fig. 1 and fig. 2, the drill bit of the pile-placing machine for the rotary drilling hole of the present embodiment includes a drill rod 1, wing plates 3 and guard rings 4, where the wing plates 3 include multiple groups, and are installed on the drill rod 1 and uniformly distributed along the circumferential direction of the drill rod 1, the guard rings 4 are installed at the outer ends of the wing plates 3, multiple groups of crushing steel wire ropes 7 are uniformly distributed on the drill rod 1 along the axial direction thereof at intervals, and each group of crushing steel wire ropes 7 includes multiple steel wire ropes uniformly distributed along the circumferential direction of the drill rod 1, and by setting the multiple groups of crushing steel wire ropes 7, each group of crushing steel wire ropes 7 is uniformly distributed along the circumferential direction of the drill rod 1, so that when the drill bit is used for drilling in powdered clay, mud lumps difficult to be converted into mud can be crushed to form mud, so as to ensure the sediment thickness and mud concentration during twice hole cleaning, and avoid the phenomena of floating cage, pile breakage, mud clamping, sandwiching and the like, construction quality and construction efficiency are effectively improved, and construction period is shortened; meanwhile, the phenomenon that the drill bit is stuck with the drill bit is effectively improved due to the arrangement of the crushing steel wire rope 7, so that the hole forming efficiency is improved, the whole construction cost is low, and the practicability is good.

Specifically, as shown in fig. 2, the wing plates 3 may be provided in four groups, which are installed at a position below the drill rod 1 and are uniformly distributed along the circumferential direction of the drill rod 1. The wing plate 3 comprises an upper wing plate 31 and a lower wing plate 32, one end of the upper wing plate 31 is connected with one end of the lower wing plate 32, and the other ends of the upper wing plate 31 and the lower wing plate are correspondingly arranged on the drill rod 1 respectively. The guard ring 4 comprises a plurality of sections, the number of the sections is matched with that of the wing plates 3, four sections can be specifically arranged in the embodiment, and the guard ring 4 is correspondingly arranged on the outer side of the joint of the upper wing plate 31 and the lower wing plate 32 and forms a circular ring. Be equipped with row cinder notch 41 between the adjacent protective shroud 4, specifically can adopt the gas cutting to cut off original partial protective shroud 4 on the drill bit, make surplus protective shroud 4 cut apart into the multistage, and 4 symmetries of every section protective shroud are installed in 3 both sides of its pterygoid lamina that correspond, make and form row cinder notch 41 between the adjacent pterygoid lamina 3, through setting up row cinder notch 41, thereby can be when the drill bit creeps into powder clay, the powder clay that will stir garrulous wire rope 7 and stir garrulous is discharged from row cinder notch 41, make the unable parcel of powder clay in protective shroud 4, thereby can't produce the paste phenomenon of boring, the pore-forming efficiency of drill bit has further effectively been improved. The inclined openings 42 are processed at the positions corresponding to the slag discharge openings 41 at the two ends of each section of the guard ring 4, namely after part of the guard ring 4 is cut by gas cutting, a certain angle is cut at the two ends of each remaining section of the guard ring 4 to form the inclined openings 42, and through the arrangement of the inclined openings 42, the quality of the wall protection can be ensured, and the phenomena of hole collapse and the like can be prevented. The length of the crushing steel wire rope 7 is matched with the outer circle radius of a circular ring surrounded by the guard ring 4, so that the size of an original drilled hole is well guaranteed, the original drilled hole is prevented from being damaged in a large area, and the recovery is simple and convenient. The upper end of the drill rod 1 is provided with a flange 2 for connecting a drilling machine; the lower extreme of drilling rod 1 is connected with drill point 6, and the bottom both sides of drill point 6 and the outside of lower pterygoid lamina 32 all evenly spaced apart and distribute a plurality of brill teeth 5 to can cut the silty clay when the drill bit creeps into, so that the pore-forming.

When the drill bit of the rotary cast-in-situ bored pile machine is manufactured, the drill bit of the traditional rotary cast-in-situ bored pile machine can be directly adopted for processing. Firstly, selecting a proper drill bit according to the pile diameter of a construction drawing; then, cutting off part of the protective ring 4 on the drill bit by gas cutting to form a slag discharge hole 41, so that the powdery clay cannot be wrapped in the protective ring 4 during drilling, and thus a stuck drill cannot be formed; after part of the guard ring 4 is cut off, the rest guard ring 4 is divided into a plurality of sections, and then a certain angle is cut off from two ends of each rest guard ring 4 to form an inclined opening 42, so that the quality of the guard wall is ensured, and the phenomena of hole collapse and the like are prevented; finally, a plurality of groups of stirring steel wire ropes 7 are additionally welded on the drill rod 1, the stirring steel wire ropes 7 can be steel wire ropes with the diameter of 350mm, the plurality of groups of stirring steel wire ropes 7 are distributed at equal intervals along the axis direction of the drill rod 1, each group of stirring steel wire ropes 7 comprises a plurality of stirring steel wire ropes 7, and each group of the plurality of stirring steel wire ropes 7 is uniformly distributed along the circumferential direction of the drill rod 1.

Claims

1. The utility model provides a pile machine drill bit of gyration drilling bored concrete pile which characterized in that: including drilling rod (1), pterygoid lamina (3) and protective shroud (4), pterygoid lamina (3) include the multiunit, and it installs on drilling rod (1) and along the circumferencial direction evenly distributed of drilling rod (1), protective shroud (4) are installed in pterygoid lamina (3) outer end, there are multiunit stirring garrulous wire rope (7) along its axis direction evenly spaced distribution on drilling rod (1), and every group stirring garrulous wire rope (7) includes a plurality of wire rope along the circumferencial direction evenly distributed of drilling rod (1).

2. The drill bit of the pile driver for the convolute cast-in-situ bored pile according to claim 1, wherein: the protective ring (4) comprises a plurality of sections, the number of the sections is matched with that of the wing plates (3), the protective ring (4) is correspondingly arranged at the outer ends of the wing plates (3) and surrounds into a circular ring, and a slag discharge port (41) is arranged between the adjacent protective rings (4).

3. The drill bit of the pile driver for the convolute cast-in-situ bored pile according to claim 2, wherein: inclined openings (42) are processed at the positions of the two ends of each section of guard ring (4) corresponding to the slag discharge openings (41).

4. The drill bit of the pile driver for the convolute cast-in-situ bored pile according to claim 3, wherein: the wing plate (3) comprises an upper wing plate (31) and a lower wing plate (32), one end of the upper wing plate (31) is connected with one end of the lower wing plate (32), the other ends of the upper wing plate and the lower wing plate are correspondingly arranged on the drill rod (1), and the retainer (4) is arranged on the outer side of the connection part of the upper wing plate (31) and the lower wing plate (32).

5. The drill bit of the pile driver for the convolute cast-in-situ bored pile according to claim 4, wherein: a plurality of drilling teeth (5) are uniformly distributed on the outer side of the lower wing plate (32) at intervals.

6. The drill bit of the rotary cast-in-situ bored pile machine of any one of claims 1 to 5, wherein: the length of the crushing steel wire rope (7) is matched with the external radius of a circular ring surrounded by the guard ring (4).

7. The drill bit of the rotary cast-in-situ bored pile machine of any one of claims 1 to 5, wherein: the upper end of the drill rod (1) is provided with a flange plate (2), and the lower end of the drill rod is connected with a drill point (6).

8. The drill bit of the pile driver for the convolute cast-in-situ bored pile according to claim 7, wherein: a plurality of drill teeth (5) are uniformly distributed on two sides of the bottom of the drill point (6) at intervals.