CN216043536U

CN216043536U - Expanding drill bit

Info

Publication number: CN216043536U
Application number: CN202122654879.XU
Authority: CN
Inventors: 郑礼其
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-03-15
Anticipated expiration: 2031-11-02

Abstract

The utility model belongs to the technical field of engineering machinery, and particularly discloses a reaming drill bit which comprises a drill cylinder, wherein the drill cylinder and the drill bit are of an integrally formed structure, a pair of long holes for pushing out a reaming blade are symmetrically arranged on two sides of the drill bit, the reaming blade is hinged with one end of a pushing mechanism for pushing out the reaming blade, the other end of the pushing mechanism is fixedly connected with one end of an electric drill chuck, and the other end of the electric drill chuck is connected with an electric drill. The utility model adopts a push type expansion method, pushes the telescopic shaft through the square shaft, and then pushes out the reaming blade, so the operation is simpler and the use is more convenient. The utility model is suitable for the reaming process in engineering construction.

Description

Expanding drill bit

Technical Field

The utility model belongs to the technical field of engineering machinery, and particularly relates to a reaming bit.

Background

Along with the rapid development of infrastructure construction in China, the construction quantity of the building anchor bolt is larger and larger, the requirement of the engineering on the bearing capacity of the anchor bolt is higher and higher, and the adoption of the bottom-expanding anchor bolt is an effective means for improving the bearing capacity of a single pile or a single anchor. At present, the oscillating reamer bit is generally adopted for reaming, but the oscillating reamer bit in the prior art has some defects: 1. when the constructor swings manually, the action is possible to be irregular, so that the reaming part is inconsistent with the anchor bolt expansion part; 2. the operation safety coefficient is low when the swing type hole expanding drill bit is used; 3. the swing type hole expanding drill bit has short service life; 4. dust raise seriously has very big influence to constructor and ecological environment in the oscillating reamer bit use.

Disclosure of Invention

The utility model aims to provide a reamer bit.

In order to achieve the purpose, the technical method comprises the following steps:

a reaming drill bit comprises a drill barrel, wherein the drill barrel and the drill bit are of an integrally formed structure, a pair of long holes used for pushing out a reaming blade is symmetrically arranged on two sides of the drill bit, the reaming blade is hinged to one end of a pushing mechanism used for pushing out the reaming blade, the other end of the pushing mechanism is fixedly connected with one end of an electric drill chuck, and the other end of the electric drill chuck is connected with an electric drill.

As a limitation: pushing mechanism includes the telescopic shaft, and the outside cover of telescopic shaft is equipped with the spring, bores a section of thick bamboo inside to be hollow structure, and inside the section of thick bamboo was located to telescopic shaft and spring, the one end of reaming blade connecting piece was connected to the one end of telescopic shaft, and the other end of reaming blade connecting piece articulates the reaming blade, the one end of the other end rigid coupling square shaft of telescopic shaft, the outside cover of square shaft is equipped with a square hole sleeve, and the telescopic one end of square hole is connected with a section of thick bamboo that bores, and the other end of square shaft exposes the telescopic other end of square hole.

As a further limitation: a rectangular groove is formed in one end, connected with the expansion blade connecting piece, of the expansion blade connecting piece, connecting holes are formed in two sides of the rectangular groove, a connecting hole is formed in one end, connected with the expansion blade connecting piece, of the expansion shaft, and the connecting holes of the expansion shaft are connected with the connecting holes in the rectangular groove of the expansion blade through shafts; the one end that reaming blade and reaming blade connecting piece are connected is equipped with the shaft hole, the other end of reaming blade connecting piece is equipped with between two connecting axles and sets up the first fan-shaped recess that uses the centre of a circle of two connecting axles as the centre of a circle respectively, the one end of reaming blade seted up with connecting axle assorted shaft hole, the reaming blade outside is seted up and is had a perfect understanding with the shaft hole, and use the shaft hole centre of a circle as the fan-shaped recess of second in the centre of a circle, the arc length of the fan-shaped recess of second of reaming blade is greater than the arc length of the first fan-shaped recess of reaming blade connecting piece, the other end of reamer bit is convex.

As yet a further limitation: a limiting disc is sleeved outside the square hole sleeve of the pushing mechanism.

As a further limitation: a cutter edge groove is formed in the reaming cutter blade, protruding points are arranged on the inner side walls, opposite to the cutter edge groove, of the strip holes on the two sides of the drill bit, the protruding points are matched with the cutter edge groove, and when the reaming cutter blade is pushed out, the cutter edge groove slides along the protruding points; and electric drill clamping openings used for locking with the electric drill are formed around the electric drill clamping head.

Due to the adoption of the scheme, compared with the prior art, the utility model has the beneficial effects that:

(1) the reaming drill bit provided by the utility model adopts a push type expansion method, the telescopic shaft is pushed by the square shaft, and the reaming blade is further pushed out, so that the operation is simpler, and the use is more convenient;

(2) according to the reaming drill bit, the reaming shape is more consistent with the expansion point of the anchor bolt, so that the attaching area of the anchor bolt and the hole wall is increased, and the drawing force of the anchor bolt is enhanced;

(3) according to the reaming drill bit, the limiting disc is attached to the surface of a wall body needing reaming in the using process, so that dust overflow is blocked while expansion points are positioned, and the pollution to construction workers and the environment during construction is reduced;

(4) according to the reaming drill bit, the cutter opening groove is arranged, so that the cutter opening groove is matched with the protruding points on the inner wall of the long hole of the drill bit, the reaming blade is pushed out, the hole opening of the reaming blade is stable, and the service life of the reaming drill bit is prolonged.

The utility model is suitable for the reaming process in engineering construction.

Drawings

The utility model is described in further detail below with reference to the figures and the embodiments.

Fig. 1 is a schematic structural view of a reamer blade of a reamer bit in a pushed-out state according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a reamer bit of the reamer head in a retracted state according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a pushing mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a reaming blade according to an embodiment of the utility model;

in the figure: 1. a drill bit; 2. reaming the blade; 3. a knife edge groove; 4. drilling a barrel; 5. a square hole sleeve; 6. a square shaft; 7. an electric drill chuck; 8. clamping a mouth of the electric drill; 9. a telescopic shaft; 10. a spring; 11. a reaming blade connector; 12. a connecting shaft; 13. a first fan-shaped groove; 14. a shaft hole; 15. a second fan-shaped groove; 16. a limiting disc.

Detailed Description

The present invention is further described with reference to the following examples, but it should be understood by those skilled in the art that the present invention is not limited to the following examples, and any modifications and equivalent changes based on the specific examples of the present invention are within the scope of the claims of the present invention.

Embodiment a reamer bit

The utility model provides a reaming drill bit, includes and bores a section of thick bamboo 4, bores a section of thick bamboo 4 and drill bit 1 structure as an organic whole, and 1 bilateral symmetry of drill bit is equipped with a pair of rectangular hole that is used for pushing out reaming blade 2, and reaming blade 2 articulates the one end that is used for pushing out the pushing mechanism of reaming blade 2, and the one end of electric drill chuck 7 is connected to pushing mechanism's other end solid, and the other end and the electric drill of electric drill chuck 7 are connected. Pushing mechanism includes telescopic shaft 9, the outside cover of telescopic shaft 9 is equipped with spring 10, bore 4 insides of section of thick bamboo and be hollow structure, telescopic shaft 9 and spring 10 locate inside 4 of section of thick bamboos, the one end of reaming blade connecting piece 11 is connected to the one end of telescopic shaft 9, the articulated reaming blade 2 of the other end of reaming blade connecting piece 11, the one end of the other end rigid coupling square shaft 6 of telescopic shaft 9, the outside cover of square shaft 6 is equipped with a square hole sleeve 5, the one end and the bore 4 of square hole sleeve 5 are connected, the other end of square shaft 6 exposes the other end of square hole sleeve 5. A rectangular groove is formed in one end, connected with the telescopic shaft 9, of the reaming blade connecting piece 11, connecting holes are formed in two sides of the rectangular groove, a connecting hole is formed in one end, connected with the reaming blade connecting piece 11, of the telescopic shaft 9, and the connecting holes of the telescopic shaft 9 are connected with the connecting holes in the rectangular groove of the reaming blade 2 through shafts; one end that reaming blade 2 and reaming blade connecting piece 11 are connected is equipped with shaft hole 14, the other end of reaming blade connecting piece 11 is equipped with and offers the first fan-shaped recess 13 that uses the centre of a circle of two connecting axles 12 respectively as the centre of a circle between two connecting axles 12, the one end of reaming blade 2 offer with connecting axle 12 assorted shaft hole 14, the reaming blade 2 outside is offered and is link up with shaft hole 14, and use the second fan-shaped recess 15 of the 14 centre of a circle in shaft hole as the centre of a circle, the arc length of the fan-shaped recess 15 of second of reaming blade 2 is greater than the arc length of the first fan-shaped recess 13 of reaming blade connecting piece 11, the other end of reamer bit is arc. The other end of the expanding bit is arc-shaped. A limiting disc 16 is sleeved outside the square hole sleeve 5 of the pushing mechanism. Be equipped with edge of a knife groove 3 on reaming blade 2, all be equipped with the protrusion point on the rectangular hole of drill bit 1 both sides and the inside wall that edge of a knife groove 3 is relative, protrusion point and edge of a knife groove 3 phase-match, when reaming blade 3 released, edge of a knife groove 3 slided along the protrusion point. And electric drill clamping openings 8 for locking with an electric drill are formed around the electric drill clamping head 7.

Before this embodiment reamer bit used, the electric drill adopted the straight shank drill bit earlier to beat a vertically hole, changed again for reamer bit, stretched into the preset position in the hole with reamer bit, pushed down reamer bit, electric drill chuck 7 pushes down, drives square shaft 6 and pushes down, and then drives telescopic shaft 9 and pushes down for spacing dish 16 with the laminating of the wall body surface that needs the reaming, the arc end of reaming blade 2 and the inner wall interact in rectangular hole release rectangular hole, ream.

Claims

1. The reaming drill bit is characterized by comprising a drill cylinder, wherein the drill cylinder and the drill bit are of an integrally formed structure, a pair of strip holes used for pushing out a reaming blade is symmetrically arranged on two sides of the drill bit, the reaming blade is hinged to one end of a pushing mechanism used for pushing out the reaming blade, the other end of the pushing mechanism is fixedly connected with one end of an electric drill chuck, and the other end of the electric drill chuck is connected with an electric drill.

2. The reaming drill bit according to claim 1, wherein the pushing mechanism comprises a telescopic shaft, a spring is sleeved outside the telescopic shaft, the inside of the drill barrel is of a hollow structure, the telescopic shaft and the spring are arranged inside the drill barrel, one end of the telescopic shaft is connected with one end of the reaming blade connecting piece, the other end of the reaming blade connecting piece is hinged with the reaming blade, the other end of the telescopic shaft is fixedly connected with one end of a square shaft, a square hole sleeve is sleeved outside the square shaft, one end of the square hole sleeve is connected with the drill barrel, and the other end of the square shaft is exposed out of the other end of the square hole sleeve.

3. The reaming bit according to claim 2, wherein the end of the reaming bit connecting piece connected with the telescopic shaft is provided with a rectangular groove, the two sides of the rectangular groove are provided with connecting holes, the end of the telescopic shaft connected with the reaming bit connecting piece is provided with a connecting hole, and the connecting hole of the telescopic shaft is connected with the connecting hole on the rectangular groove of the reaming bit through a shaft; the one end that reaming blade and reaming blade connecting piece are connected is equipped with the shaft hole, the other end of reaming blade connecting piece is equipped with between two connecting axles and sets up the first fan-shaped recess that uses the centre of a circle of two connecting axles as the centre of a circle respectively, the one end of reaming blade seted up with connecting axle assorted shaft hole, the reaming blade outside is seted up and is had a perfect understanding with the shaft hole, and use the shaft hole centre of a circle as the fan-shaped recess of second in the centre of a circle, the arc length of the fan-shaped recess of second of reaming blade is greater than the arc length of the first fan-shaped recess of reaming blade connecting piece, the other end of reamer bit is convex.

4. The reamer bit of claim 3, wherein the square hole sleeve of the pushing mechanism is externally sleeved with a limiting disc.

5. The reaming bit according to claim 4, wherein the reaming bit is provided with a cutting edge groove, the inner side walls of the elongated holes on two sides of the reaming bit, which are opposite to the cutting edge groove, are provided with protruding points, the protruding points are matched with the cutting edge groove, and when the reaming bit is pushed out, the cutting edge groove slides along the protruding points; and electric drill clamping openings used for locking with the electric drill are formed around the electric drill clamping head.