CN211924097U

CN211924097U - Down-the-hole drill bit convenient to change

Info

Publication number: CN211924097U
Application number: CN202020560379.2U
Authority: CN
Inventors: 蔡永奎
Original assignee: Wuxi Beijiaer Technology Co ltd
Current assignee: Wuxi Beijiaer Technology Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-11-13
Anticipated expiration: 2030-04-16

Abstract

The utility model belongs to the technical field of the down-the-hole technique and specifically relates to a down-the-hole drill bit convenient to change, including drill bit, connector and drilling rod, the bottom joint of drill bit has the drilling rod, the inside fixedly connected with bracing piece in top of drilling rod, the both sides sliding connection of bracing piece has the second buckle, the below of second buckle is rotated with the upper end of head rod and is connected, the lower extreme of head rod is rotated with the upper end of second connecting rod and is connected, the lower extreme and the lifter fixed connection of second connecting rod, the joint has the connector under the drilling rod, the inside first buckle that is equipped with in left side of connector, first buckle and left first draw-in groove joint. The utility model discloses in, through first draw-in groove, first buckle and the first spring that sets up, make drilling rod and connector joint to second spring, second buckle and the lifter through setting up make drill bit and drilling rod joint, saved the use of alloy, have better economic value.

Description

Down-the-hole drill bit convenient to change

Technical Field

The utility model relates to a down-the-hole technical field specifically is a down-the-hole drill bit convenient to change.

Background

With the development of society, the application of the down-the-hole drill bit is more and more extensive, and the end face design form that the down-the-hole drill bit high wind pressure down-the-hole drill bit adopted mainly has four: namely, the end surface convex type, the end surface plane type, the end surface concave type and the end surface deep concave center type, and the hard alloy mostly adopts a tooth arrangement mode of spherical teeth, elastic teeth or the common use of the spherical teeth and the elastic teeth, so that the demand for the down-the-hole drill bit convenient to replace is increasing day by day.

The down-the-hole drill bit in actual life is large in size, needs to be integrally installed during installation, is time-consuming and labor-consuming, and brings much inconvenience to down-the-hole due to the fact that the down-the-hole drill bit needs to be integrally replaced when replaced, so that the down-the-hole drill bit convenient to replace is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a down-the-hole drill bit convenient to change to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a down-the-hole drill bit convenient to replace comprises a drill bit, a connector and a drill rod, wherein a second clamping groove is formed in the lower portion of the drill bit, the drill rod is clamped at the bottom of the drill bit, a supporting rod is fixedly connected to the upper portion of the drill rod, a second spring is coated outside the middle of the supporting rod, second buckles are connected to two sides of the supporting rod in a sliding mode, the second buckles are clamped with the second clamping groove, the lower end of each second buckle is rotatably connected with the upper end of a first connecting rod, the lower end of each first connecting rod is rotatably connected with the upper end of a second connecting rod, the lower end of each second connecting rod is fixedly connected with a lifting rod, a first clamping groove is formed in the lower portion of the drill rod, the first clamping grooves are arranged in two positions, the two first clamping grooves are symmetrically distributed along the perpendicular bisector of the drill rod, the connector is clamped under the drill rod, and a hole groove, the connector comprises a connector body, and is characterized in that a fastener is fixedly connected to the upper right of the connector body, the fastener is connected with a first clamping groove on the right side in a clamped mode, a first fastener is arranged inside the left side of the connector body, a first spring is coated on the outer side of the left side of the first fastener, and the first fastener is connected with the first clamping groove on the left side in a clamped mode.

Preferably, the number of the second buckles is two, and the two second buckles are symmetrical left and right relative to the central axis of the drill rod.

Preferably, a round hole is formed in the upper portion of the drill rod, and the round hole in the upper portion of the drill rod corresponds to the second clamping groove.

Preferably, the left side of the first buckle is provided with a limiting block, and the limiting block on the left side of the first buckle is located on the left side of the spring.

Preferably, a notch is formed in the upper portion of the drill rod, the lifting rod is arranged in the notch of the drill rod, and the lifting rod is connected with the notch of the drill rod in a sliding mode.

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

1. the utility model discloses in, through first draw-in groove, first buckle and the first spring that sets up, press first buckle and make first buckle and first draw-in groove can the joint, recycle first spring and play first buckle and stretch, make drilling rod and connector joint, the material resources of using manpower sparingly are operated in the operation of being convenient for.

2. The utility model discloses in, through second spring, second buckle and the lifter that sets up, remove the lifter and make the second buckle can be to the middle removal of bracing piece, make the second buckle can carry out the joint with the second draw-in groove, loosen the lifter, utilize the elasticity of second spring with second buckle joint in the second draw-in groove, make drill bit and drilling rod joint, saved the use of alloy, have better economic value.

Drawings

Fig. 1 is an overall sectional view of the present invention;

FIG. 2 is a schematic view of the structure at A of FIG. 1 according to the present invention;

fig. 3 is a side view of the second buckle and the lifting rod of the present invention.

In the figure: 1-drill bit, 2-first clamping groove, 3-first buckle, 4-first spring, 5-hole groove, 6-connector, 7-fixed buckle, 8-drill rod, 9-support rod, 10-second spring, 11-second buckle, 12-first connecting rod, 13-second connecting rod, 14-lifting rod, 15-second clamping groove and 16-limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

a down-the-hole drill bit convenient to replace comprises a drill bit 1, a connector 6 and a drill rod 8, wherein a second clamping groove 15 is arranged inside the lower portion of the drill bit 1, the drill rod 8 is clamped at the bottom of the drill bit 1, a support rod 9 is fixedly connected inside the upper portion of the drill rod 8, a second spring 10 covers the middle of the support rod 9, second buckles 11 are connected to two sides of the support rod 9 in a sliding mode, the second buckles 11 are clamped with the second clamping groove 15, the lower end of each second buckle 11 is rotatably connected with the upper end of a first connecting rod 12, the lower end of each first connecting rod 12 is rotatably connected with the upper end of a second connecting rod 13, the lower end of each second connecting rod 13 is fixedly connected with a lifting rod 14, a first clamping groove 2 is arranged inside the lower portion of the drill rod 8, the first clamping grooves 2 are two, the two first clamping grooves 2 are symmetrically distributed along the perpendicular bisector of the drill rod 8, the connector 6 is clamped below the drill rod, connector 6's the upper right side fixedly connected with fixed buckle 7, fixed buckle 7 and the 2 joints of first draw-in groove on right side, connector 6's the inside first buckle 3 that is equipped with in left side, the left side of first buckle 3 has first spring 4, first buckle 3 and the 2 joints of left first draw-in groove.

The number of the second buckles 11 is two, and the two second buckles 11 are bilaterally symmetrical relative to the central axis of the drill rod 8, so that the second clamping grooves 15 on two sides inside the drill bit 1 can be clamped on the second buckles 11; a round hole is formed in the upper portion of the drill rod 8, and the round hole in the upper portion of the drill rod 8 corresponds to the second clamping groove 15, so that the second buckle 11 can be smoothly clamped with the second clamping groove 15; a limiting block 16 is arranged on the left side of the first buckle 3, and the limiting block 16 on the left side of the first buckle 3 is positioned on the left side of the first spring 4, so that the first spring 4 cannot fall off, and the first buckle 3 can be bounced off by the first spring 4; the drill rod is characterized in that a notch is formed in the upper portion of the drill rod 8, the lifting rod 14 is arranged in the notch of the drill rod 8, the lifting rod 14 is connected with the notch of the drill rod 8 in a sliding mode, the lifting rod 14 can slide up and down, and therefore the drill rod 8 and the drill bit 1 can be smoothly clamped.

The working process is as follows: when the drill bit is used, the connector 6 is installed on a down-the-hole machine, the limiting block 16 is pressed to compress the first spring 4, the first buckle 3 is enabled to move towards the right side, the fixed buckle 7 is connected with the first clamping groove 2 at the right side in a clamping mode, the first clamping groove 3 is loosened, the first buckle 3 is connected with the first clamping groove 2 at the left side in a clamping mode, the drill rod 8 is connected with the connector 6 in a clamping mode, when the drill bit is required to be dismounted, the limiting block 16 is pressed to compress the first spring 4, the first buckle 3 moves towards the right side, the first buckle 3 is separated from the first clamping groove 2 at the right side, then the fixed buckle 7 is separated from the first clamping groove 2 at the left side, the drill rod 8 is dismounted, when the drill bit 1 is installed or replaced, the lifting rod 14 is pulled downwards, the lifting rod 14 slides downwards to drive the second connecting rod 13 to move downwards, the second connecting rod 13 moves downwards to enable the inner side of the first connecting rod 12 to move downwards, the inner side of the first connecting rod 12 moves downwards, the middle of the outside lateral bracing piece 9 of bracing piece 9 removes the centre that makes second buckle 11 to bracing piece 9, places the second draw-in groove 15 of the inside of drill bit 1 on the position that the inside second buckle 11 of drilling rod 8 corresponds this moment, loosens lifter 14, makes second spring 10 play second buckle 11 to the both sides of bracing piece 9, makes

second buckle

11 and 15 joints of second draw-in groove to make the joint of drill bit 1 on drilling rod 8.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A down-the-hole drill bit convenient to change, includes drill bit (1), connector (6) and drilling rod (8), its characterized in that: the drill bit is characterized in that a second clamping groove (15) is formed in the lower portion of the drill bit (1), a drill rod (8) is clamped at the bottom of the drill bit (1), a supporting rod (9) is fixedly connected to the inner portion of the upper portion of the drill rod (8), a second spring (10) covers the middle of the supporting rod (9), second buckles (11) are connected to the two sides of the supporting rod (9) in a sliding mode, the second buckles (11) are clamped with the second clamping groove (15), the lower portion of the second buckles (11) is rotatably connected with the upper end of a first connecting rod (12) through connecting shafts, the lower end of the first connecting rod (12) is rotatably connected with the upper end of a second connecting rod (13) through connecting shafts, the lower end of the second connecting rod (13) is fixedly connected with a lifting rod (14), a first clamping groove (2) is formed in the lower portion of the drill rod (8), and the first clamping grooves (2), two perpendicular bisector symmetric distribution of drilling rod (8) is followed in first draw-in groove (2), the joint has connector (6) under drilling rod (8), the inside left side of connector (6) is equipped with hole groove (5), the fixed buckle (7) of the upper right side fixedly connected with of connector (6), fixed buckle (7) and first draw-in groove (2) joint on right side, the inside first buckle (3) that is equipped with in left side of connector (6), the left side of first buckle (3) is covered with first spring (4) outward, first buckle (3) and left first draw-in groove (2) joint.

2. A down-the-hole drill bit to facilitate replacement as claimed in claim 1 wherein: the number of the second buckles (11) is two, and the two second buckles (11) are symmetrical left and right relative to the central axis of the drill rod (8).

3. A down-the-hole drill bit to facilitate replacement as claimed in claim 1 wherein: and a round hole is formed in the upper inner part of the drill rod (8), and the round hole in the upper part of the drill rod (8) corresponds to the second clamping groove (15).

4. A down-the-hole drill bit to facilitate replacement as claimed in claim 1 wherein: the left side of first buckle (3) is equipped with stopper (16), stopper (16) on the left side of first buckle (3) are located the left side of first spring (4).

5. A down-the-hole drill bit to facilitate replacement as claimed in claim 1 wherein: a notch is formed in the upper portion of the drill rod (8), the lifting rod (14) is arranged in the notch of the drill rod (8), and the lifting rod (14) is connected with the notch of the drill rod (8) in a sliding mode.