CN213775363U

CN213775363U - Composite sheet drill bit

Info

Publication number: CN213775363U
Application number: CN202022784732.8U
Authority: CN
Inventors: 王太锋
Original assignee: Shanxi Jinbairui Mining Machinery Equipment Manufacturing Co ltd
Current assignee: Shanxi Jinbairui Mining Machinery Equipment Manufacturing Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-07-23
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses a compound piece drill bit, include: a plurality of drill bits; the drill pipe comprises a mounting seat, wherein one side of the mounting seat is connected with a drill pipe, a plurality of drill bits are detachably mounted on the other side of the mounting seat and are circumferentially distributed around the axis of the drill pipe, an inflow groove is formed in the drill pipe and comprises a first groove part and a second groove part which are communicated in the length direction of the inflow groove, a stepped part is formed at the joint of the first groove part and the second groove part, an outflow groove is formed in the surface, close to the drill bits, of the mounting seat, and the outflow groove is communicated with the first groove part; the spring is arranged in the first groove, the plug is arranged at one end of the spring, and the spring drives the plug to abut against the step portion normally so as to cut off the inflow groove. The drill bit in this device can be dismantled with the mount pad and link to each other, makes the easy dismouting of drill bit easy to detach from this, is equipped with spring and end cap in addition to can realize the direction of influx groove and switch on, effectively avoid rivers refluence.

Description

Composite sheet drill bit

Technical Field

The utility model belongs to the technical field of the drill bit and specifically relates to a compound piece drill bit is related to.

Background

In the coal mining process, the drill bit is the main instrument of broken mineral seam rock, when the coal mine rock stratum creeps into, creeps into through the surface of drill bit to the coal seam, and the drill bit on the compound piece drill bit among the prior art is fixed the setting usually, and this when just resulting in certain drill bit to damage, need change whole compound piece drill bit, use cost is higher, exists the improvement part.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the first objective of the present invention is to provide a compact bit.

The technical scheme of the utility model as follows: a compact bit, comprising: a plurality of drill bits; the drill bit mounting structure comprises a mounting seat, wherein a drill rod is connected to one side of the mounting seat in the thickness direction, a plurality of drill bits are detachably mounted on the other side of the mounting seat in the thickness direction, the drill bits are distributed in a circumferential mode around the axis of the drill rod, the surface, far away from the mounting seat, of the drill rod is recessed towards the direction close to the mounting seat to form an inflow groove, the inflow groove comprises a first groove portion and a second groove portion which are communicated with each other along the length direction of the inflow groove, a stepped portion is formed at the joint of the first groove portion and the second groove portion, an outflow groove is formed in the surface, close to the drill bit, of the mounting seat, and the outflow groove is communicated with the first groove portion; the spring is arranged in the first groove portion, the plug is arranged at one end of the spring, and the spring drives the plug to stop abutting against the step portion to cut off the inflow groove.

Furthermore, a screw rod is arranged on the drill bit, a threaded hole is formed in the surface, far away from the drill rod, of the mounting seat, and the screw rod is in threaded connection with the threaded hole.

Furthermore, the peripheral wall of the drill rod is provided with threads.

Furthermore, the inflow groove is a plurality of, and a plurality of the inflow groove is around the axis of drilling rod is the circumference distribution, along the radial direction of drilling rod, the drill bit is located the radial outside of inflow groove.

Furthermore, the first groove part and the second groove part are both cylindrical grooves, the axis of the first groove part is collinear with the axis of the second groove part, the inner diameter of the first groove part is larger than that of the second groove part, the plug is a spherical head, and the outer diameter of the plug is larger than that of the second groove part.

Further, the outflow groove includes third slot portion and fourth slot portion, the third slot portion is located being close to of mount pad the surface of drill bit, the third slot portion is followed the length direction of drill rod extends, the one end that is close to of third slot portion the drill rod is equipped with the fourth slot portion, the fourth slot portion slope extend and with the third slot portion forms the obtuse angle contained angle, the fourth slot portion link up to first slot portion.

Further, still include the fender lid, fender lid detachably establishes in order to cover on the influx groove, the fender lid is a plurality of, and is a plurality of the fender lid is with a plurality of the cooperation of influx groove one-to-one, arbitrary adjacent two be connected with the connecting strip between the fender lid.

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

(1) the drill bit can be dismantled continuously with the mount pad, thereby make the drill bit easy dismounting easy, the follow-up change in time when the drill bit damages of being convenient for, and need not trade whole compound piece drill bit, reduce use cost, the drill bit is a plurality of, and a plurality of drill bits are the circumference around the axis of drilling rod and distribute, when the drill bit drilling from this, the drilling diameter can be several times of original drilling diameter, has effectively improved drilling efficiency, shortens the tunnelling time, still can reduce the degree of wear of single drill bit.

(2) This device can let in rivers to the second slot part when drilling, and under the pressure of rivers, rivers can promote the effort that the end cap overcame the spring and remove to flow into first slot part, the rivers rethread flows out of the groove at last, with the dust fall of spraying water when drilling, the rivers that let in moreover still can play the cooling action to this device. The device is provided with the spring and the plug, so that the guide conduction of the inflow groove can be realized, and the backflow of water flow is effectively avoided.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work:

fig. 1 is a front view of the present invention;

fig. 2 is a perspective view of the mounting base of the present invention;

FIG. 3 is an exploded view of the mounting base and cover of the present invention;

fig. 4 is a cross-sectional view of the mount of the present invention;

fig. 5 is a cut-away perspective view of the mounting base of the present invention.

Reference numerals:

1. a drill bit; 2. a mounting seat; 3. a drill stem; 4. a flow-in groove; 5. a first groove portion; 6. a second groove portion; 7. a plug; 8. a spring; 9. a threaded hole; 10. an outflow channel; 11. a third groove portion; 12. a fourth groove portion; 13. a step portion; 14. a blocking cover; 15. and (4) connecting strips.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

A compact bit 1 according to an embodiment of the present invention is described below with reference to fig. 1 to 5, which includes a bit 1, a mount 2, a plug 7, and a spring 8.

As shown in fig. 1, there are a plurality of drill bits 1, and as shown in fig. 2, 4 and 5, a drill rod 3 is connected to one side of the mounting seat 2 in the thickness direction, the plurality of drill bits 1 are detachably mounted to the other side of the mounting seat 2 in the thickness direction, and the plurality of drill bits 1 are circumferentially distributed around the axis of the drill rod 3.

Particularly, mount pad 2 in this embodiment is the disc shape, the lower surface of mount pad 2 is equipped with drilling rod 3, the central axis collineation of drilling rod 3 and the central axis of mount pad 2, the last surface mounting of mount pad 2 has drill bit 1, drill bit 1 can dismantle with mount pad 2 and link to each other, make drill bit 1 easy-to-assemble easy-to-disassemble from this, be convenient for follow-up can in time change when certain drill bit 1 damages, and need not trade whole compound piece drill bit, reduce use cost, drill bit 1 in this embodiment is a plurality of, and a plurality of drill bit 1 is the circumference around the axis of drilling rod 3 and distributes, from this when compound piece drill bit drills, the drilling diameter can be several times of original drilling diameter, drilling efficiency has effectively been improved, shorten the tunnelling time, still can reduce the degree of wear of single drill bit 1.

As shown in fig. 4 and 5, the surface of the drill rod 3 far away from the mounting seat 2 is recessed toward the direction close to the mounting seat 2 to form an inflow groove 4, the inflow groove 4 comprises a first groove portion 5 and a second groove portion 6 which are communicated with each other along the length direction of the inflow groove 4, a step portion 13 is formed at the joint of the first groove portion 5 and the second groove portion 6, an outflow groove 10 is arranged on the surface of the mounting seat 2 close to the drill bit 1, the outflow groove 10 is communicated with the first groove portion 5, specifically, in the present embodiment, the lower surface of the drill rod 3 is recessed upward to form the inflow groove 4, and the inflow groove 4 comprises the first groove portion 5 on the upper side and the second groove portion 6 on the lower side.

The spring 8 is arranged in the first groove portion 5, one end of the spring 8 is provided with a plug 7, the spring 8 normally drives the plug 7 to stop against the step portion 13 to cut off the flowing-in groove 4, that is, the spring 8 applies an acting force to the plug 7, and under the action of the acting force, the plug 7 abuts against the step portion 13 to cut off the flowing-in groove 4, so that unidirectional conduction can be realized.

This device can let in rivers in 6 to the second slot part when drilling, and under the pressure of rivers, rivers can promote end cap 7 and overcome the effort removal of spring 8 to flow into first slot part 5, the rivers rethread flows out of groove 10 at last, with carry out the water spray dust fall when drilling, and the rivers that let in moreover still can play the cooling effect to this device. The device is provided with the spring 8 and the plug 7, so that the guide conduction of the inflow groove 4 can be realized, and the backflow of water flow is effectively avoided.

In this embodiment, as shown in fig. 3 and 4, a screw is provided on the drill bit 1, a threaded hole 9 is provided on a surface of the mounting seat 2 away from the drill rod 3, and the screw is in threaded connection with the threaded hole 9, so that the drill bit 1 and the mounting seat 2 can be detachably connected.

In this embodiment, as shown in fig. 3, the outer circumferential wall of the drill rod 3 is provided with a thread, thereby facilitating the installation of the drill rod 3.

In this embodiment, as shown in fig. 3, the inflow grooves 4 are a plurality of, and the inflow grooves 4 are circumferentially distributed around the axis of the drill rod 3, and along the radial direction of the drill rod 3, the drill bit 1 is located on the radial outer side of the inflow groove 4, thereby being beneficial to enlarging the spraying area and simultaneously being beneficial to improving the cooling effect of water flow on the device.

In this embodiment, as shown in fig. 4 and 5, the first groove portion 5 and the second groove portion 6 are both cylindrical grooves, the axis of the first groove portion 5 is collinear with the axis of the second groove portion 6, the inner diameter of the first groove portion 5 is larger than the inner diameter of the second groove portion 6, the plug 7 is a spherical head, and the outer diameter of the plug 7 is larger than the inner diameter of the second groove portion 6, so that the structure is simple and convenient to implement.

In the present embodiment, as shown in fig. 4 and 5, the outflow channel 10 includes a third channel portion 11 and a fourth channel portion 12, the third channel portion 11 is disposed on the surface of the mounting seat 2 close to the drill bit 1, the third channel portion 11 extends along the length direction of the drill rod 3, one end of the third channel portion 11 close to the drill rod 3 is provided with the fourth channel portion 12, the fourth channel portion 12 extends obliquely and forms an obtuse included angle with the third channel portion 11, and the fourth channel portion 12 penetrates the first channel portion 5, so that water flow from the first channel portion 5 into the outflow channel 10 is facilitated.

In this embodiment, as shown in fig. 2 and 3, the device further includes a cover 14, the cover 14 is detachably disposed on the inlet slot 4 to cover the inlet slot 4, and the cover 14 is disposed to cover the inlet slot 4 when the device is not in use, so as to prevent foreign objects from entering the inlet slot 4.

Further, a plurality of blocking covers 14 are provided, the blocking covers 14 are matched with the inflow grooves 4 in a one-to-one correspondence mode, and a connecting strip 15 is connected between any two adjacent blocking covers 14, so that the structure is simple and convenient to realize.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A composite sheet drill bit, comprising:

a plurality of drill bits;

the drill bit mounting structure comprises a mounting seat, wherein a drill rod is connected to one side of the mounting seat in the thickness direction, a plurality of drill bits are detachably mounted on the other side of the mounting seat in the thickness direction, the drill bits are distributed in a circumferential mode around the axis of the drill rod, the surface, far away from the mounting seat, of the drill rod is recessed towards the direction close to the mounting seat to form an inflow groove, the inflow groove comprises a first groove portion and a second groove portion which are communicated with each other along the length direction of the inflow groove, a stepped portion is formed at the joint of the first groove portion and the second groove portion, an outflow groove is formed in the surface, close to the drill bit, of the mounting seat, and the outflow groove is communicated with the first groove portion;

the spring is arranged in the first groove portion, the plug is arranged at one end of the spring, and the spring drives the plug to stop abutting against the step portion to cut off the inflow groove.

2. The composite sheet drill bit of claim 1, wherein the drill bit is provided with a threaded rod, the surface of the mounting seat away from the drill rod is provided with a threaded hole, and the threaded rod is in threaded connection with the threaded hole.

3. The composite compact drill bit of claim 1, wherein the outer peripheral wall of the drill shaft is threaded.

4. The composite compact drill bit of claim 1, wherein the plurality of inflow slots are circumferentially distributed about the axis of the drill rod, the drill bit being located radially outward of the inflow slots in a radial direction of the drill rod.

5. The composite compact drill bit of claim 1, wherein the first and second slot portions are cylindrical slots, the axis of the first slot portion is collinear with the axis of the second slot portion, the first slot portion has an inner diameter greater than the inner diameter of the second slot portion, the plug is a spherical head, and the outer diameter of the plug is greater than the inner diameter of the second slot portion.

6. The composite drill bit of claim 1, wherein the outflow channel comprises a third channel portion and a fourth channel portion, the third channel portion is disposed on a surface of the mounting seat near the drill bit, the third channel portion extends along the length direction of the drill rod, the fourth channel portion is disposed at an end of the third channel portion near the drill rod, the fourth channel portion extends obliquely and forms an obtuse included angle with the third channel portion, and the fourth channel portion penetrates to the first channel portion.

7. The composite sheet drill bit of claim 4, further comprising a plurality of blocking covers detachably arranged on the inflow grooves to cover the inflow grooves, the blocking covers are matched with the inflow grooves in a one-to-one correspondence manner, and a connecting strip is connected between any two adjacent blocking covers.