CN213198301U

CN213198301U - Drill bit structure of percussion drill

Info

Publication number: CN213198301U
Application number: CN202021512156.5U
Authority: CN
Inventors: 葛纪平; 张华武; 王涛; 吴曼; 田汉州
Original assignee: Road and Bridge International Co Ltd; China Communications Road and Bridge North China Engineering Co Ltd
Current assignee: Road and Bridge International Co Ltd; China Communications Road and Bridge North China Engineering Co Ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-05-14
Anticipated expiration: 2030-07-27

Abstract

The utility model relates to a drill bit technical field, concretely relates to strike and bore drill bit structure aims at solving among the related art that the percussion bit drilling effect is poor, can't reduce the coefficient of friction of the both sides of drill bit, when the user carries out the drilling of power degree greatly, easy cracked problem, and its technical essential lies in including the connecting rod, the bottom of connecting rod is equipped with the drilling rod, the bottom of drilling rod is equipped with the drill bit, the drilling rod endotheca is equipped with the buffing pad, be equipped with the cavity in the buffing pad, the connecting rod bottom runs through to the cavity, the connecting rod overcoat is equipped with at least two sets of elastic component, elastic component fixed connection is between buffing pad and drilling rod to and fixed connection in between cavity inner wall and the connecting rod. The utility model discloses when carrying out powerful drilling to building wall, can reduce the coefficient of friction of drill bit both sides, reinforcing percussion bit's drilling effect especially when the user increases dynamics or building material hard to the drill bit, avoids the drill bit to break off, is worth using widely.

Description

Drill bit structure of percussion drill

Technical Field

The application relates to the technical field of drill bits, in particular to a percussion drill bit structure.

Background

Percussion bit is the equipment that supplies the clamping on percussion drill, and it uses to drill to concrete foundation, wall, brick wall, granite to install fasteners such as expansion bolts, plastics expand tube in the hole, when the user drills to building wall, need use percussion bit, and current percussion bit drilling effect is poor, can't reduce the coefficient of friction of the both sides of drill bit, when the user carries out the drilling of big power, current percussion bit is easy fracture.

SUMMERY OF THE UTILITY MODEL

The main aim at of this application provides a percussion drill bit structure to it is poor to solve percussion drill bit drilling effect among the correlation technique, can't reduce the coefficient of friction of the both sides of drill bit, when the user carries out the drilling of big power degree, easy cracked problem.

The technical purpose of the application is realized by the following technical scheme:

the utility model provides a strike and bore drill bit structure, includes the connecting rod, the bottom of connecting rod is equipped with the drilling rod, the bottom of drilling rod is equipped with the drill bit, the drilling rod endotheca is equipped with the cushion socket, be equipped with the cavity in the cushion socket, the connecting rod bottom runs through to the cavity, the connecting rod overcoat is equipped with at least two sets of elastic component, elastic component fixed connection is between cushion socket and drilling rod to and fixed connection in between cavity inner wall and the connecting rod.

Optionally, the connecting rod comprises a limiting rod head and a limiting rod body which are integrally connected, and the lower parts of the limiting rod head and the limiting rod body are nested in the cavity of the buffer seat.

Optionally, the elastic element includes a first spring, the lower half part of the limit rod body is sleeved with the first spring, and two ends of the first spring are respectively and fixedly connected to the surface of the limit rod head and the top of the cavity of the buffer seat.

Optionally, the elastic element further comprises a second spring, the second spring is sleeved on the upper half part of the limiting rod body, and two ends of the second spring are fixedly connected to the top surface of the buffer seat and the lower surface of the inner cavity of the drill rod respectively.

Optionally, a circle of annular table is arranged in the cavity of the buffer seat, and the inner diameter of the annular table is smaller than the diameter of the limiting rod head.

Optionally, an annular edge is arranged on one side, close to the limiting rod head, of the buffer seat, and a third spring is arranged between the upper surface of the annular edge and the lower surface of the inner cavity of the drill rod.

Optionally, slag discharge grooves are formed in the centers of the front side and the rear side of the drill bit, and the drill bit is hollow.

Optionally, air vents matched with the drill bit are formed in two sides of the inner cavity of the drill rod.

The utility model discloses technical scheme has following advantage: when carrying out powerful drilling to building wall, can reduce the coefficient of friction of drill bit both sides, the drilling effect of reinforcing percussion bit has solved the poor problem of current percussion bit drilling effect to cushion the drill bit, especially when the user increases the dynamics or building material is hard to the drill bit, avoid the drill bit to break off, be worth using widely.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a cross-sectional view of a bit structure of a hammer drill provided according to an embodiment of the present application.

In the figure, 1, connecting rod; 11. a limiting rod head; 12. a limiting rod body; 2. a drill stem; 3. a drill bit; 4. a slag discharge groove; 41. a vent hole; 5. a buffer seat; 51. an annular rim; 52. a cavity; 53. an annular table; 6. an elastic member; 61. a first spring; 62. a second spring; 63. and a third spring.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The utility model provides a percussion drill bit structure, as shown in fig. 1, including connecting rod 1, the bottom of connecting rod 1 is equipped with drilling rod 2, the bottom of drilling rod 2 is equipped with drill bit 3, the drill rod 2 endotheca is equipped with cushion socket 5, be equipped with cavity 52 in the cushion socket 5, connecting rod 1 bottom is run through to cavity 52, connecting rod 1 overcoat is equipped with at least two sets of elastic component 6, elastic component 6 fixed connection is between cushion socket 5 and drilling rod 2 to and fixed connection is between cavity 52 inner wall and connecting rod 1. Consequently, when carrying out powerful drilling to building wall, can reduce the coefficient of friction of drill bit both sides, the drilling effect of reinforcing percussion bit has solved the poor problem of current percussion bit drilling effect to cushion the drill bit, especially when the user increases the dynamics or building material is hard to the drill bit, avoid the drill bit to break off, be worth using widely.

Specifically, as shown in fig. 1, the connecting rod 1 includes the spacing head 11 and the spacing shaft 12 of body coupling, spacing head 11 and the spacing shaft 12 lower half are nested in the cavity 52 of buffer base 5, make spacing head 11 restricted in the cavity 52 of buffer base 5, and then restrict the motion trail in the whole vertical direction, make the elastic component 6 of wearing to establish on the connecting rod 1 only receive vertical direction's vibrational force and do not take place horizontal direction's elastic deformation, play the effect that protects elastic component 6 not damaged, improve its life.

As shown in fig. 1, the elastic member 6 includes a first spring 61, the first spring 61 is sleeved on the lower half of the limiting shaft 12, and two ends of the first spring 61 are respectively fixedly connected to the surface of the limiting rod head 11 and the top of the cavity 52 of the cushion base 5. The elastic element 6 further comprises a second spring 62, the upper half part of the limiting rod body 12 is sleeved with the second spring 62, and two ends of the second spring 62 are respectively and fixedly connected to the top surface of the buffer seat 5 and the lower surface of the inner cavity of the drill rod 2. The utility model discloses in this embodiment, refer to figure 1, first spring 61 and second spring 62 all are in tensile state this moment, are under the state of generally not atress promptly, and buffer seat 5 is not with drilling rod 2 looks butt, and connecting rod 1 is not with buffer seat 5 looks butt to share pressure through two main and auxiliary spring cooperations each other, can show its buffering effect well stably, effectively reduce the coefficient of friction of the both sides of drill bit.

As shown in FIG. 1, a ring of annular table 53 is arranged in the cavity 52 of the cushion seat 5, and the inner diameter of the annular table 53 is smaller than the diameter of the limiting rod head 11, so that excessive deformation of the spring is avoided, and the spring is further prevented from collapsing to cause safety accidents.

As shown in FIG. 1, an annular edge 51 is provided on one side of the buffer seat 5 close to the position-limiting rod head 11, and a third spring 63 is provided between the upper surface of the annular edge 51 and the lower surface of the inner cavity of the drill rod 2. Thus, depending on the actual circumstances of the particular application, the third spring is selectively used to further cooperatively share the damping pressure.

As shown in fig. 1, the front and rear centers of the drill bit 3 are both provided with slag discharge grooves 4, and the inside of the drill bit 3 is hollow, so that dust or slag in the drill bit 3 can be discharged through the oval slag discharge grooves 4. In addition, the two sides of the inner cavity of the drill rod 2 are provided with vent holes 41 matched with the drill bit 3 for use, so that the effect of reducing air pressure is achieved, and faults are prevented.

The working principle of the drill bit structure of the impact drill is as follows: install this drill bit to the rig, in operation, the vibrating force of its production constantly upwards transmits, can effectively be absorbed by the buffering of elastic component 6, drive connecting rod 1 promptly and move along vertical direction in the cavity 52 of buffer base 5, tensile first spring 61, second spring 62 and third spring 63, make mutual cooperation share pressure between the main and auxiliary spring, realize the effect of energy dissipation buffering, reduce the coefficient of friction at drill bit both sides, especially when the user increases dynamics or building material hard to the drill bit, avoid the drill bit to break, be worth using widely.

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

Claims

1. The utility model provides a drill bit structure is bored in impact, its characterized in that, includes connecting rod (1), the bottom of connecting rod (1) is equipped with drilling rod (2), the bottom of drilling rod (2) is equipped with drill bit (3), drilling rod (2) endotheca is equipped with buffer seat (5), be equipped with cavity (52) in buffer seat (5), connecting rod (1) bottom is run through to cavity (52), connecting rod (1) overcoat is equipped with at least two sets of elastic component (6), elastic component (6) fixed connection is between buffer seat (5) and drilling rod (2), and fixed connection in between cavity (52) inner wall and connecting rod (1).

2. A percussion drill bit structure according to claim 1, characterized in that the connecting rod (1) comprises a limiting rod head (11) and a limiting rod body (12) which are integrally connected, the lower half parts of the limiting rod head (11) and the limiting rod body (12) being nested in the cavity (52) of the cushion socket (5).

3. The structure of the percussion drill bit according to claim 2, wherein the elastic member (6) comprises a first spring (61), the first spring (61) is sleeved on the lower half part of the limiting rod body (12), and two ends of the first spring (61) are respectively fixedly connected to the surface of the limiting rod head (11) and the top of the cavity (52) of the cushion seat (5).

4. The structure of the percussion drill bit according to claim 3, wherein the elastic member (6) further comprises a second spring (62), the second spring (62) is sleeved on the upper half part of the limiting rod body (12), and two ends of the second spring (62) are respectively fixedly connected to the top surface of the buffer seat (5) and the lower surface of the inner cavity of the drill rod (2).

5. A percussion drill bit structure according to claim 4, characterized in that a ring of annular table (53) is provided in the cavity (52) of the cushion socket (5), the inner diameter of the annular table (53) being smaller than the diameter of the stop rod head (11).

6. A percussion drill bit structure as claimed in claim 5, characterized in that the buffer base (5) is provided with an annular rim (51) on the side close to the limit rod head (11), and a third spring (63) is provided between the upper surface of the annular rim (51) and the lower surface of the inner cavity of the drill rod (2).

7. The percussion drill bit structure of claim 1, wherein the drill bit (3) is provided with slag discharge grooves (4) at the center of the front side and the rear side, and the drill bit (3) is hollow.

8. The percussion drill bit structure of claim 1, wherein both sides of the inner cavity of the drill rod (2) are provided with vent holes (41) for use with the drill bit (3).