CN211623309U

CN211623309U - Spiral percussion drill bit device

Info

Publication number: CN211623309U
Application number: CN202020145340.4U
Authority: CN
Inventors: 曹兴明; 姚金海; 李伟春; 童修富; 王宇; 崔伟婷; 谷艳艳
Original assignee: Heilongjiang Huayan Piling Technology R & D Co ltd
Current assignee: Heilongjiang Huayan Piling Technology R & D Co ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-10-02
Anticipated expiration: 2030-01-22

Abstract

A spiral impact drill bit device belongs to the technical field of building cast-in-place pile foundation equipment. The lower end of the drill rod is provided with an impact chamber, the impactor is arranged in the impact chamber, the high-pressure air pipe provides compressed air for an air cylinder of the impactor, the pick bit is arranged at the lower end of the impact chamber of the drill rod and comprises an outer sleeve, an inner core and a plurality of drill teeth; a plurality of mounting grooves have been seted up to the equipartition on the lateral wall of overcoat, every bores the tooth and all inserts and the joint on the mounting groove that corresponds from the overcoat outside, inner core lower extreme lateral surface sets up and presses on all brill teeth with the laminating of overcoat medial surface, be equipped with the free gap of inner core between inner core and the overcoat inner chamber upper end, pass through screw fixed connection between connecting portion two of inner core upper end and the connecting portion one of overcoat upper end. The utility model discloses be furnished with high-power air compressor and be power, solved the problem that full morals and manners, strong morals and manners rock stratum creeped into.

Description

Spiral percussion drill bit device

Technical Field

The utility model belongs to the technical field of building bored concrete pile foundation equipment, especially, relate to a spiral percussion bit device.

Background

A construction process is commonly used in the current building market: the pile-forming method by drilling and pressure pouring super-fluid concrete is disclosed in patent No. ZL93120168.3 entitled super-fluid concrete and its pouring pile-forming method and drilling machine used by said method. And the drill bit which is commonly used can only drill a soil layer and a sand layer, and the down-the-hole hammer or the mud dado percussion drill can be replaced when a hard soil layer and strong weathered rocks are encountered, so that the construction speed is low, and the construction cost is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spiral percussion bit device for solve the problem that exists among the background art.

The utility model adopts the technical proposal that: the spiral percussion drill bit device comprises a high-pressure air pipe, a drill rod, an impactor and a cutting bit; the lower end of the drill rod is provided with an impact chamber, the impactor is arranged in the impact chamber, the high-pressure air pipe provides compressed air for an air cylinder of the impactor, the pick bit is arranged at the lower end of the impact chamber of the drill rod and comprises an outer sleeve, an inner core and a plurality of drill teeth; a plurality of mounting grooves have been seted up to the equipartition on the lateral wall of overcoat, every bores the tooth and all inserts and the joint on the mounting groove that corresponds from the overcoat outside, inner core lower extreme lateral surface sets up and presses on all brill teeth with the laminating of overcoat medial surface, be equipped with the free gap of inner core between inner core and the overcoat inner chamber upper end, pass through screw fixed connection between connecting portion two of inner core upper end and the connecting portion one of overcoat upper end.

The beneficial effects of the utility model reside in that:

the utility model discloses being furnished with high-power air compressor and being power, having solved the problem that full morals and manners, strong morals and manners rock formation creeps into, increased rig efficiency by a wide margin, reduced engineering cost, easily preparation and installation, compact structure, the dependable performance can be changed and bore tooth, durable.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the cutting pick bit structure of the present invention;

FIG. 3 is a schematic view of the present invention when changing the drill teeth;

FIG. 4 is a schematic view of a drill bushing according to the present invention;

wherein: 1-high pressure air pipe; 2-a drill rod; 2-1-impingement chamber; 3-an impactor; 4-a pick bit; 4-1-coat; 4-2-drilling teeth; 4-21-raised snap-gauge; 4-3-inner core; 4-4-mounting groove; 4-41-circular through holes; 4-42-slope; 4-43-card slot; 4-5-connecting part one; 4-51-threaded hole; 4-6-screws; 4-7-connecting part two; 4-71-blocking protrusions; 4-72-slotted hole.

Detailed Description

As shown in fig. 1 to 4, the spiral percussion drill bit device comprises a high-pressure air pipe 1, a drill rod 2, an impactor 3 and a cutting bit 4; the lower end of the drill rod 2 is provided with an impact chamber 2-1, the impactor 3 is installed in the impact chamber 2-1, an air compressor provides compressed air for an air cylinder of the impactor 3 through a high-pressure air pipe 1, the cutting pick drill bit 4 is installed at the lower end of the impact chamber 2-1 of the drill rod 2, and the cutting pick drill bit 4 comprises an outer sleeve 4-1, an inner core 4-3 and a plurality of drill teeth 4-2; a plurality of mounting grooves 4-4 are uniformly formed in the side wall of the outer sleeve 4-1, each drilling tooth 4-2 is inserted into and clamped in the corresponding mounting groove 4-4 from the outer side of the outer sleeve 4-1, the outer side surface of the lower end of the inner core 4-3 is attached to the inner side surface of the outer sleeve 4-1 and pressed on all the drilling teeth 4-2, a movable gap of the inner core 4-3 is formed between the inner core 4-3 and the upper end of the inner cavity of the outer sleeve 4-1, and a connecting part two 4-7 at the upper end of the inner core 4-3 is fixedly connected with a connecting part one 4-5 at the upper end of the outer sleeve 4-1 through screws 4-6.

When the drill teeth 4-2 are replaced, the screws 4-6 are firstly unscrewed, the inner core 4-3 can move in the outer sleeve 4-1, the inner core 4-3 is pulled upwards, then the drill teeth 4-2 are rotated to enable the drill teeth 4-2 to be separated from the outer sleeve 4-1, and the reverse operation is carried out during installation.

As shown in fig. 4, 2 and 3, the outer end of each mounting groove 4-4 on the outer sleeve 4-1 is a circular through hole 4-41, one side of the inner end of each mounting groove 4-4 is provided with a clamping groove 4-43 of the drill tooth 4-2, and the other side of the inner end of each mounting groove 4-4 is provided with a slope 4-42.

As shown in figures 2 and 3, one side of the tail end of each drill tooth 4-2 is provided with a protruding clamping plate 4-21, and the protruding clamping plate 4-21 and the drill tooth 4-2 penetrate through the circular through hole 4-41 end of the mounting groove 4-4 to be clamped with the clamping groove 4-43.

As shown in fig. 2 and 3, a plurality of blocking protrusions 4-71 are arranged on the outer side surface of the lower end of the inner core 4-3, the blocking protrusions 4-71 are inserted into gaps between the drill teeth 4-2 and the corresponding mounting grooves 4-4, and the contact surfaces of the blocking protrusions 4-71 and the slopes 4-42 are vertical surfaces.

As shown in fig. 2 to 4, the upper end of the connecting part one 4-5 of the outer sleeve 4-1 is provided with a plurality of threaded holes 4-51, the connecting part two 4-7 of the inner core 4-3 is provided with a plurality of slotted holes 4-72, the plurality of slotted holes 4-72 and the plurality of threaded holes 4-51 are combined into a screw hole 4-6, the plurality of screws 4-6 are inserted into the corresponding screw holes in a threaded manner, the rod end of each screw 4-6 is connected with the outer sleeve 4-1, and the cap end of each screw 4-6 is pressed on the inner core 4-3. For fixing the inner core 4-3 and the outer sheath 4-1.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A helical percussive drill bit apparatus, comprising: comprises a high-pressure air pipe (1), a drill rod (2), an impactor (3) and a cutting pick drill bit (4); the lower end of the drill rod (2) is provided with an impact chamber (2-1), the impactor (3) is installed in the impact chamber (2-1), the high-pressure air pipe (1) provides compressed air for an air cylinder of the impactor (3), the cutting pick drill bit (4) is installed at the lower end of the impact chamber (2-1) of the drill rod (2), and the cutting pick drill bit (4) comprises an outer sleeve (4-1), an inner core (4-3) and a plurality of drill teeth (4-2); a plurality of mounting grooves (4-4) are uniformly distributed on the side wall of the outer sleeve (4-1), each drilling tooth (4-2) is inserted from the outer side of the outer sleeve (4-1) and is clamped on the corresponding mounting groove (4-4), the outer side surface of the lower end of the inner core (4-3) is attached to the inner side surface of the outer sleeve (4-1) and is pressed on all the drilling teeth (4-2), a movable gap of the inner core (4-3) is formed between the inner core (4-3) and the upper end of the inner cavity of the outer sleeve (4-1), and a second connecting part (4-7) at the upper end of the inner core (4-3) and a first connecting part (4-5) at the upper end of the outer sleeve (4-1) are fixedly connected through screws (4-6).

2. The helical percussive drill bit assembly as set forth in claim 1, wherein: the outer end of each mounting groove (4-4) on the outer sleeve (4-1) is a circular through hole (4-41), one side of the inner end of each mounting groove (4-4) is provided with a clamping groove (4-43) of the drilling teeth (4-2), and the other side of the inner end of each mounting groove (4-4) is provided with a slope (4-42).

3. The helical percussive drill bit assembly as set forth in claim 2, wherein: one side of the tail end of each drilling tooth (4-2) is provided with a protruding clamping plate (4-21), and the protruding clamping plates (4-21) and the drilling teeth (4-2) penetrate through the circular through holes (4-41) of the mounting grooves (4-4) to be clamped with the clamping grooves (4-43).

4. The helical percussive drill bit assembly as set forth in claim 2 or claim 3, wherein: the outer side face of the lower end of the inner core (4-3) is provided with a plurality of plugging bulges (4-71), the plugging bulges (4-71) are inserted into gaps between the drilling teeth (4-2) and the corresponding mounting grooves (4-4), and the contact surfaces of the plugging bulges (4-71) and the slopes (4-42) are vertical surfaces.

5. The helical percussive drill bit assembly as set forth in claim 4, wherein: the upper end of a first connecting part (4-5) of the outer sleeve (4-1) is provided with a plurality of threaded holes (4-51), a second connecting part (4-7) of the inner core (4-3) is provided with a plurality of slotted holes (4-72), the slotted holes (4-72) and the threaded holes (4-51) are combined into a screw hole (4-6), the screws (4-6) are inserted into the corresponding screw holes in a threaded manner, the rod end of each screw (4-6) is connected with the outer sleeve (4-1), and the cap end of each screw (4-6) is pressed on the inner core (4-3).