CN212317857U

CN212317857U - Impact PDC drill bit

Info

Publication number: CN212317857U
Application number: CN202021399680.6U
Authority: CN
Inventors: 邓唯一; 付正兵; 刘文彬; 杜杨; 谭金山; 傅红兵
Original assignee: Yichang Shenda Technology Co Ltd
Current assignee: Yichang Shenda Technology Co Ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2021-01-08
Anticipated expiration: 2030-07-15

Abstract

An impact PDC drill bit is used for solving the problems that the drill bit cannot drive a cutter bit to rotate in the falling impact process, thereby causing the inconsistency of the section and the aperture of the pile hole and seriously affecting the technical problem of subsequent construction, comprising an impact main body, a horizontal turntable, a driving component which can be contracted and reset and a connecting component, wherein the turntable is arranged at the bottom of the impact main body, the outer side of the rotary table is provided with a wall-making tool bit, the bottom of the impact main body is inwards provided with a cavity, the connecting component is arranged in the cavity and is respectively connected with the impact main body and the rotary table, the driving component is arranged in the cavity, penetrates through the turntable and extends out of the turntable so as to be stressed to retract into the cavity and reset outside the turntable, and then make drive assembly reset and be connected with coupling assembling when stretching out outside the carousel to the drive carousel rotates, the utility model discloses the use is simple, and mainly used strikes drilling.

Description

Impact PDC drill bit

Technical Field

The utility model relates to a stake hole processing technology field, concretely relates to can make and strike the impact PDC drill bit that stake hole cross-section and aperture are more even unanimous that the processing goes out.

Background

The construction method comprises the following steps of constructing a pile hole in a construction site, inserting a reinforcement cage into the pile hole, pouring concrete into the pile hole to form a reinforced concrete column, and constructing an upper structure on the ground on the basis of the reinforced concrete columns.

Pile hole construction has multiple construction methods, and the construction method who commonly uses has multiple modes such as strike the pore-forming, dig the pore-forming soon, manual work is dug the hole and is exploded the pore-forming, and strikes among these construction methods and make wall pore-forming strong adaptability, is fit for multiple geological conditions, consequently uses more frequently.

The impact punching is generally performed by means of a winch, a steel wire rope and an impact drill bit, wherein the steel wire rope is connected between the impact drill bit and the winch, and the winch can repeatedly lift and drop the impact drill bit, so that the impact drill bit repeatedly impacts and strikes at a specific pile position, and the impact drilling is continuously performed to form a pile hole.

The periphery of percussion bit impact end generally has the tool bit of making the wall usefulness of impact, and these tool bits often are welded fastening on percussion bit to promote repeatedly and fall percussion bit's in-process, percussion bit often can not take place to rotate, consequently the tool bit station relatively fixed, thereby strike repeatedly and make the wall in-process tool bit only impact at the specific position in stake hole and make the wall, cause stake hole cross-section and aperture inconsistent easily, seriously influence follow-up construction.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is not enough to prior art, provides and strikes PDC drill bit for what mention among the solution background art because the drill bit can not drive the tool bit rotation at the impact in-process that falls down, thereby cause stake hole cross-section and aperture inconsistent, seriously influence the technical problem of follow-up construction.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

strike PDC drill bit, including striking main part, horizontally carousel, the drive assembly and the coupling assembling that can stretch and contract and reset, the carousel is located and is strikeed the main part bottom, and this carousel outside is equipped with the wall-making tool bit, it has the cavity to strike inside the opening in main part bottom, coupling assembling locates in the cavity and is connected with impact main part and carousel respectively, drive assembly locates in the cavity and wears to establish the carousel and stretch out outside the carousel to be used for the atress to retract back to the cavity and outside resetting to the carousel, and then make drive assembly reset and be connected with coupling assembling when stretching out the carousel outward, rotate with the drive carousel.

The working principle is as follows: the steel wire rope is arranged on the winch by means of the winch and the steel wire rope, the end part of the steel wire rope is fastened on the impact main body, and then the impact main body is driven to ascend and descend by the winch and the steel wire rope.

When strike main part and carousel and fall to the stake hole bottom of impacting the pore-forming as a whole, drive assembly touches stake hole bottom with the butt, thereby stake hole bottom exerts external force to drive assembly and makes drive assembly retract this moment, when promoting once more strike main part and carousel, the carousel breaks away from stake hole bottom, this moment drive assembly stretches out the carousel once more outside, drive assembly will be connected with coupling assembling in the process of stretching out the carousel outside to cause under coupling assembling's effect the carousel rotates, the carousel rotates and can adjust effectively the position of wall-building tool bit, then will strike main part and carousel whereabouts and strike the pore-forming once more.

With this reciprocating, the utility model discloses promote at every turn can both rotate the carousel after impact main part and the carousel to it all can adjust the position automatically to make the wall tool bit when punching a hole to strike at every turn, thereby can make the stake hole cross-section and the aperture that strike the formation more even unanimous.

The utility model has the advantages that:

the utility model discloses with the help of carousel, coupling assembling and drive assembly, when promoting impact main part and carousel, drive assembly can be connected with coupling assembling at the in-process that resets to the drive the carousel rotates, and the carousel rotates and then drives and makes the wall tool bit rotate, and then strikes at every turn and creeps into the position that all can adjust and make the wall tool bit to can make the stake hole cross-section and the aperture that strike and form more even unanimous, the follow-up construction of being more convenient for.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Description of reference numerals: the wall-building tool comprises an impact main body 1, a rotary table 2, a wall-building tool bit 3, a cavity 4, a bevel gear 5, a connecting tooth 6, a mounting rod 7, a first sleeve 8, a first elastic part 9, a connecting rod 10, a second sleeve 11, a penetrating rod 12, a second elastic part 13, a key groove 14, a sliding block 15, a bolt 16, a mounting groove 17, a mounting ring 18, an impact tooth 19, a lifting ring 20, a first support 21, a second support 22 and a threaded rod 23.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

As shown in fig. 1, the percussion PDC drill bit comprises a percussion main body 1, a horizontal rotary table 2, a retractable and resettable driving assembly and a connecting assembly, wherein the rotary table 2 is arranged at the bottom of the percussion main body 1, a wall-making tool bit 3 is arranged at the outer side of the rotary table 2, a cavity 4 is formed in the bottom of the percussion main body 1, the connecting assembly is arranged in the cavity 4 and is respectively connected with the percussion main body 1 and the rotary table 2, the driving assembly is arranged in the cavity 4 and penetrates through the rotary table 2 and extends out of the rotary table 2, so as to be retracted into the cavity 4 and reset out of the rotary table 2 under stress, and then the driving assembly is connected with the connecting assembly when being reset out of the rotary table 2, so as to drive the rotary table 2 to rotate, when the percussion main body 1 and the rotary table 2 are lifted, the driving assembly can be connected with the connecting assembly in the resetting process, so as to drive, the turntable 2 rotates to drive the wall-making tool bit 3 to rotate, and then the position of the wall-making tool bit 3 can be adjusted by impact drilling at each time, so that the section and the aperture of a pile hole formed by impact are more uniform and consistent, and the follow-up construction is more convenient.

As shown in fig. 1 and 2, the connecting assembly includes two engaged bevel gears 5 and connecting teeth 6 arranged in a closed ring shape, the two bevel gears 5 are both disposed on the impact body 1 and located in the cavity 4, a first bracket 21 and a second bracket 22 are respectively fixed on the impact body 1 and in the cavity 4, the two bevel gears 5 are respectively disposed on the first bracket 21 and the second bracket 22, the connecting teeth 6 are fixed on the rotating disc 2, and one of the bevel gears 5 is engaged with the connecting teeth 6. The driving assembly comprises an installation rod 7, a first sleeve 8, a first elastic part 9 and a connecting rod 10, the installation rod 7 is fixed on the impact main body 1 and is located in the cavity 4, the first sleeve 8 is sleeved on the installation rod 7 and penetrates through the rotary table 2 to extend out of the rotary table 2, the first elastic part 9 is sleeved on the installation rod 7, two ends of the first elastic part are respectively connected with the impact main body 1 and the first sleeve 8, the first sleeve 8 is reset after being stressed to retract and extends out of the rotary table 2, the connecting rod 10 is fixed on the first sleeve 8, the connecting rod is used for shifting teeth of another bevel gear 5 when the first sleeve 8 is reset, and the bevel gear 5 is further rotated.

As shown in fig. 1 and 2, the connecting rod 10 includes a second sleeve 11, a penetrating rod 12 and a second elastic member 13, the second sleeve 11 is fixed on the first sleeve 8, the penetrating rod 12 is penetrated in the second sleeve 11 and extends out of the second sleeve 11, the second elastic member 13 is arranged in the second sleeve 11, and two ends of the second elastic member are respectively connected with the first sleeve 8 and the penetrating rod 12, the outer end of the penetrating rod 12 is provided with an inclined surface for touching the bevel gear 5 when retracting along with the first sleeve 8 and retracting the penetrating rod 12 into the second sleeve 11, and for toggling the teeth of the bevel gear 5 when returning along with the first sleeve 8.

As shown in fig. 1, the end of the first sleeve 8 extending out of the turntable 2 is a closed tip, and the first elastic member 9 and the second elastic member 13 are both in a spring structure.

As shown in fig. 1, a plurality of key grooves 14 are formed in the outer side of the rotary table 2, sliding blocks 15 are arranged in the key grooves 14, bolts 16 are connected to the sliding blocks 15 in a threaded mode, the bolts 16 penetrate through the rotary table 2 and are connected with the rotary table 2 in a threaded mode, the wall building cutter head 3 is fixedly connected with the sliding blocks 15, and the wall building cutter head 3 is convenient to replace in the installation mode. It is a plurality of keyway 14 is along 2 circumference evenly distributed of carousel to make a plurality of wall-building tool bits 3 evenly distributed on carousel 2, and then can make the more even in stake hole aperture that strikes formation, improve the quality in stake hole.

As shown in fig. 1, the turntable 2 is provided with an annular mounting groove 17, and a mounting ring 18 is fixed at the bottom of the impact body 1, and the mounting ring 18 is arranged in the mounting groove 17 and can rotate relatively. A plurality of impact teeth 19 are fixed at the bottom of the turntable 2, and the impact teeth 19 can impact the bottom of a pile hole better under the action of impact force, so that the drilling speed is improved, and the pile hole driving efficiency is improved. The top of the impact main body 1 is detachably provided with a hanging ring 20, a threaded rod 23 is integrally formed on the hanging ring 20, and the threaded rod 23 is in threaded connection with the upper part of the impact main body 1.

The working principle is as follows: the steel wire rope is installed on the hoist by means of the hoist and the steel wire rope, and the end of the steel wire rope is fastened on the hanging ring 20 on the impact body 1, and then the impact body 1 is driven to ascend and descend by the hoist and the steel wire rope.

When the impact main body 1 and the rotary table 2 fall to the bottom of a pile hole which is being impacted to form a hole as a whole, the driving component is abutted to touch the bottom of the pile hole, at the moment, external force is applied to the driving component by the bottom of the pile hole to enable the first sleeve 8 of the driving component to retract, when the impact main body 1 and the rotary table 2 are lifted again, the rotary table 2 is separated from the bottom of the pile hole, at the moment, the first sleeve 8 in the driving component extends out of the rotary table 2 again, the first sleeve 8 touches one of the bevel gears 5 in the process of extending out of the rotary table 2, so that the bevel gear 5 rotates to drive the other meshed bevel gear 5 to rotate, the other bevel gear 5 rotates to drive the meshed connecting teeth 6 to rotate, the connecting teeth 6 rotate to drive the rotary table 2 to rotate, and the rotary table 2 rotates to effectively adjust the position of the wall-making tool bit, the impact body 1 and the turntable 2 are then dropped and impacted into the hole again.

The first sleeve 8 drives the penetrating rod 12 to move in the retracting process, when the penetrating rod 12 moves to a process close to and touching the bevel gear 5, the penetrating rod 12 pushes the inner bevel gear 5 to retract into the second sleeve 11, and the bevel gear 5 can be prevented from rotating at the moment, so that the turntable 2 can rotate uniformly in rhythm in the repeated impact wall-making process, and the aperture of the pile hole is more uniform.

With this reciprocating, the utility model discloses promote at every turn can both rotate carousel 2 after impacting main part 1 and carousel 2 to it can all adjust the position automatically to make wall tool bit 3 when punching a hole to strike at every turn, thereby can make the stake hole cross-section and the aperture that strike the formation more even unanimous.

When the wall making cutter head 3 needs to be replaced, the bolt 16 is only required to be screwed out, then the sliding block 15 and the wall making cutter head 3 are pulled out of the key groove 14, then the new sliding block 15 and the new wall making cutter head 3 are installed in the key groove 14 again, and the bolt 16 is screwed in again, so that the replacement efficiency of the wall making cutter head 3 can be improved.

When the lifting ring 20 needs to be replaced, the threaded rod 23 can be screwed out, and then the new lifting ring 20 is installed on the impact main body 1 through the threaded rod 23 integrally formed with the new lifting ring 20, so that replacement is more convenient.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. Strike PDC drill bit, its characterized in that: including impact main part (1), horizontally carousel (2), scalable and drive assembly and coupling assembling that resets, impact main part (1) bottom is located in carousel (2), and this carousel (2) outside is equipped with makes wall tool bit (3), inwards open in impact main part (1) bottom has cavity (4), coupling assembling locates in cavity (4) and is connected with impact main part (1) and carousel (2) respectively, drive assembly locates in cavity (4) and wears to establish carousel (2) and stretch out outside carousel (2) to be used for the atress to retract to cavity (4) in and outside resetting to carousel (2), and then make drive assembly reset and be connected with coupling assembling when stretching out carousel (2) outward, rotate with drive carousel (2).

2. The percussive PDC bit of claim 1, wherein: the connecting assembly comprises two meshed bevel gears (5) and connecting teeth (6) which are arranged in a closed ring shape, the bevel gears (5) are arranged on the impact main body (1) and located in the cavity (4), the connecting teeth (6) are fixed on the rotary disc (2), and one bevel gear (5) is meshed with the connecting teeth (6).

3. The percussive PDC bit of claim 2, wherein: the driving assembly comprises an installation rod (7), a first sleeve (8), a first elastic piece (9) and a connecting rod (10), the installation rod (7) is fixed on the impact main body (1) and is located in the cavity (4), the first sleeve (8) is sleeved on the installation rod (7) and penetrates through the rotary table (2) to extend out of the rotary table (2), the first elastic piece (9) is sleeved on the installation rod (7) and two ends of the first elastic piece are respectively connected with the impact main body (1) and the first sleeve (8) so as to be used for resetting the first sleeve (8) after the first sleeve (8) is stressed to retract and extending out of the rotary table (2), and the connecting rod (10) is fixed on the first sleeve (8) so as to be used for shifting teeth of another bevel gear (5) when the first sleeve (8) is reset and further enable the bevel gear (5) to rotate.

4. The percussive PDC bit of claim 3, wherein: the connecting rod (10) comprises a second sleeve (11), a penetrating rod (12) and a second elastic piece (13), the second sleeve (11) is fixed on the first sleeve (8), the penetrating rod (12) penetrates through the second sleeve (11) and extends out of the second sleeve (11), the second elastic piece (13) is arranged in the second sleeve (11), two ends of the second elastic piece are respectively connected with the first sleeve (8) and the penetrating rod (12), the outer end of the penetrating rod (12) is provided with an inclined surface, the inclined surface is used for touching the bevel gear (5) when the second elastic piece retracts along with the first sleeve (8) and enabling the penetrating rod (12) to retract into the second sleeve (11), and the inclined surface is used for shifting teeth of the bevel gear (5) when the first sleeve (8) resets.

5. The percussive PDC bit of claim 3, wherein: the end part of the first sleeve (8) extending out of the rotary table (2) is a closed tip.

6. The percussive PDC bit of any one of claims 1-5 wherein: the wall building device is characterized in that a plurality of key grooves (14) are formed in the outer side of the rotary table (2), sliding blocks (15) are arranged in the key grooves (14), bolts (16) are connected to the sliding blocks (15) in a threaded mode, the bolts (16) penetrate through the rotary table (2) and are connected with the rotary table (2) in a threaded mode, and the wall building tool bit (3) is fixedly connected with the sliding blocks (15).

7. The percussive PDC bit of claim 6, wherein: the plurality of key grooves (14) are uniformly distributed along the circumferential direction of the rotary disc (2).

8. The percussive PDC bit of any one of claims 1-5 wherein: the rotary table (2) is provided with an annular mounting groove (17), the bottom of the impact main body (1) is fixedly provided with a mounting ring (18), the mounting ring (18) is arranged in the mounting groove (17), and the mounting ring and the mounting groove can rotate relatively.

9. The percussive PDC bit of any one of claims 1-5 wherein: a plurality of impact teeth (19) are fixed at the bottom of the rotary disc (2).

10. The percussive PDC bit of any one of claims 1-5 wherein: the top of the impact main body (1) is detachably provided with a lifting ring (20).