CN210370504U

CN210370504U - Drill bit for processing thick concrete bottom plate

Info

Publication number: CN210370504U
Application number: CN201920961464.7U
Authority: CN
Inventors: 叶圣元; 柴建森; 沈西华; 顾伟华; 裘园; 万历; 王炀; 谢军; 李沐纱; 张宏帆; 黄黎红; 张丽红
Original assignee: Zhejiang Construction Engineering Group Co Ltd
Current assignee: Zhejiang Construction Engineering Group Co Ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-04-21
Anticipated expiration: 2029-06-25

Abstract

The utility model relates to a drill bit for processing a thick concrete bottom plate, which comprises a metal sleeve; the bottom of the metal sleeve is fixedly provided with a plurality of uniformly arranged outer cutter bits, the inner wall of the metal sleeve is fixedly provided with a plurality of alloy cutter bits, and a space is reserved between each alloy cutter bit and each outer cutter bit; the utility model discloses a composite structure form of outer tool bit and alloy tool bit, the diameter of cutting reinforced concrete bottom plate diminishes, accomplishes the back when whole cutting, directly grasps reinforced concrete bottom plate cake and hangs from drilling with the grab bucket, clears up downthehole surplus fritter concrete again, and the plain soil of completion back is backfilled, strengthens metal sleeve's intensity, effectively prevents that the drill bit from warping, has improved production efficiency, has practiced thrift manufacturing cost.

Description

Drill bit for processing thick concrete bottom plate

Technical Field

The utility model belongs to the technical field of the drill bit device, concretely relates to drill bit for handling thick concrete bottom plate.

Background

Hangzhou political affairs store out [2016]20 land parcel commercial business house (Hangzhou International centre) foundation engineering place Hangzhou city Jiangjingcheng unit (JG17) E-04 land parcel, Dong Yongchun road, Nang Dangui street, West Yongmin road and North Yongjin road. There is former sewage pump house in this engineering field, and the bottom plate buries deeply and exceeds 10m, and the bottom plate is thick to reach 2m, and is nearer apart from north river splendid road, unsatisfied heavy excavation and handles, adopts foundation ditch excavation aftertreatment, can't satisfy the condition that basic bored concrete pile was under construction in the foundation ditch, consequently must handle the bottom plate of former sewage pump house, construct basic bored concrete pile behind the wallboard.

The method that adopts 360 degrees full gyration sleeve pipes to follow up is cleared up the barrier, meets the tool bit cutting bottom plate back at the actual in-process of clearing up the barrier, and whole bottom plate concrete card is in the sleeve pipe, is difficult to take out, adopts pneumatic jump bit broken time of a specified duration in the sleeve pipe, and the garrulous sediment of concrete clearance is more difficult.

In view of the above problems, improvements are needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem and providing a drill bit for processing thick concrete bottom plate.

In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme: a drill bit for treating thick concrete floors comprising a metal sleeve; the bottom of the metal sleeve is fixedly provided with a plurality of uniformly arranged outer cutter heads, the inner wall of the metal sleeve is fixedly provided with a plurality of alloy cutter heads, and a space is reserved between the alloy cutter heads and the outer cutter heads.

As a preferred scheme of the utility model, alloy tool bit includes the locating plate, sets firmly interior tool bit on the locating plate, and locating plate and interior tool bit are the integrated into one piece structure.

As a preferred scheme of the utility model, the locating plate is laminated in metal sleeve inner wall, the radian looks adaptation of locating plate and metal sleeve inner wall.

As an optimized proposal of the utility model, the inner cutter head and the inner positioning plate are welded at an inclination angle of 5 degrees to 10 degrees.

As a preferred scheme of the utility model, the interval between interior tool bit and the outer tool bit is not more than 50 mm.

As an optimized proposal of the utility model, the inner cutter head and the outer cutter head are arranged in a staggered way.

As a preferred scheme of the utility model, interior tool bit and outer tool bit are carbide.

The utility model has the advantages that: the utility model discloses a composite structure form of outer tool bit and alloy tool bit, the diameter of cutting reinforced concrete bottom plate diminishes, accomplishes the back when whole cutting, directly grasps reinforced concrete bottom plate cake and hangs from drilling with the grab bucket, clears up downthehole surplus fritter concrete again, and the plain soil of completion back is backfilled, strengthens metal sleeve's intensity, effectively prevents that the drill bit from warping, has improved production efficiency, has practiced thrift manufacturing cost.

Drawings

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

FIG. 2 is a cross-sectional view taken along line A-A of the present invention;

wherein: the cutting tool comprises an outer tool bit 1, a metal sleeve 3, an alloy tool bit 4, a positioning plate 40 and an inner tool bit 41.

Detailed Description

As shown in fig. 1-2, a drill bit for treating thick concrete floors includes a metal sleeve 3; a plurality of uniformly arranged outer cutter heads 1 are fixedly arranged at the bottom of the metal sleeve 3, a plurality of alloy cutter heads 4 are fixedly arranged on the inner wall of the metal sleeve 3, and a space is reserved between each alloy cutter head 4 and each outer cutter head 1; the utility model discloses a combined structure form of outer tool bit 1 and alloy tool bit 4, the diameter of cutting reinforced concrete bottom plate diminishes, accomplishes the back when whole cutting, directly grasps reinforced concrete bottom plate cake and hangs from drilling with the grab bucket, clears up downthehole surplus fritter concrete again, and the plain soil of completion back is backfilled, and reinforcing metal sleeve's intensity effectively prevents that the drill bit from warping, has improved production efficiency, has practiced thrift manufacturing cost.

The utility model discloses an interior tool bit 41 is crisscross with outer tool bit 1 and is laid, and is concrete, and the quantity of interior tool bit 41 is less than outer tool bit 1 quantity, and in the in-service use process, the thick concrete in-process of drill bit cutting, outer tool bit 1 is main cutting point, and interior tool bit 41 is supplementary cutting, has avoided metal sleeve 3 at the cutting process, and the safety in utilization and stability have been guaranteed in the jam of metal sleeve 3, and simultaneously, interior tool bit 41 is carbide with outer tool bit 1, has guaranteed the availability factor of drill bit.

In addition, the two ends of the outer cutter head 1 can be in arc transition, the force applied to the outer cutter head 1 is more uniform and is not easy to fall off, the strength of the whole drill bit is enhanced, deformation is not easy to occur, the contact area is increased, and the drilling efficiency is improved.

The alloy cutter head 4 comprises a positioning plate 40 and an inner cutter head 41 fixedly arranged on the positioning plate 40, and the positioning plate 40 and the inner cutter head 41 are of an integrally formed structure; by adopting the technical scheme, the structural strength and the integral firmness of the alloy cutter head 4 are improved, and the cutting stability and safety are ensured.

The locating plate 40 is laminated in 3 inner walls of metal sleeve, the radian looks adaptations of locating

plate

40 and 3 inner walls of metal sleeve, and locating plate 40 is iron plate, and iron plate specification 300X 200 (20, 30) mm, iron plate and 3 size and radian laminating of metal sleeve, the purpose of welding iron plate is: the stress area of the alloy cutter head 4 is increased to ensure that the metal sleeve 3 is not torn when the reinforced concrete bottom plate is cut and the metal sleeve 3 is not damaged when the alloy cutter head 4 is subsequently stripped.

The inner cutter head 41 and the inner positioning plate 40 are welded at an inclination angle of 5-10 degrees, so that the cut reinforced concrete bottom plate is prevented from being clamped by the metal sleeve 3, the inner cutter head 41 and the like after entering the metal sleeve 3, and the grab bucket can grab a reinforced concrete bottom plate round cake with a gap.

The distance between the inner cutter head 41 and the outer cutter head 1 is not more than 50mm, so that the diameter of the whole reinforced concrete bottom plate is ensured to be reduced, otherwise, the whole reinforced concrete bottom plate is small at the top and big at the bottom after cutting is finished, and a reinforced concrete bottom plate round cake cannot be taken out on the clamped outer cutter.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the reference numerals in the figures are used more here: the terms outer cutter head 1, metal sleeve 3, alloy cutter head 4, positioning plate 40, inner cutter head 41, etc., do not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A drill bit for treating thick concrete floors, comprising a metal sleeve (3); metal sleeve (3) bottom sets firmly outer tool bit (1) of a plurality of even settings, its characterized in that: a plurality of alloy cutter heads (4) are fixedly arranged on the inner wall of the metal sleeve (3), and a space is reserved between each alloy cutter head (4) and the corresponding outer cutter head (1).

2. A drill bit for treating thick concrete floors according to claim 1, characterized in that: the alloy cutter head (4) comprises a positioning plate (40) and an inner cutter head (41) fixedly arranged on the positioning plate (40), and the positioning plate (40) and the inner cutter head (41) are of an integrally formed structure.

3. A drill bit for treating thick concrete floors according to claim 2, characterized in that: the positioning plate (40) is attached to the inner wall of the metal sleeve (3), and the radian of the positioning plate (40) is matched with that of the inner wall of the metal sleeve (3).

4. A drill bit for treating thick concrete floors according to claim 3, characterized in that: the inner cutter head (41) and the inner positioning plate (40) are welded at an inclination angle of 5-10 degrees.

5. A drill bit for treating thick concrete floors according to claim 4, characterized in that: the distance between the inner cutter head (41) and the outer cutter head (1) is not more than 50 mm.

6. A drill bit for treating thick concrete floors according to claim 5, characterized in that: the inner cutter heads (41) and the outer cutter heads (1) are arranged in a staggered mode.

7. A drill bit for treating thick concrete floors according to claim 6, characterized in that: the inner cutter head (41) and the outer cutter head (1) are made of hard alloy.