CN218206588U

CN218206588U - PDC drill bit with buffer structure

Info

Publication number: CN218206588U
Application number: CN202222043904.5U
Authority: CN
Inventors: 胡军; 李玲玲; 朱云翔; 邹大双
Original assignee: Wuhan Eastar Tool Co ltd
Current assignee: Wuhan Eastar Tool Co ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2023-01-03
Anticipated expiration: 2032-08-04

Abstract

The application relates to the field of PDC drill bits and discloses a PDC drill bit with a buffering structure. In this application, the bottom of movable plate is provided with moisture absorption silica gel, moisture absorption silica gel bonds with the side of movable plate contact and has the trompil rubber, moisture absorption silica gel's bottom bonds and has the removal mounting panel, and removes mounting panel sliding connection in the inner wall of sliding tray, buffer base's bottom inner wall fixed mounting has the attenuator, the top setting of attenuator is at the lower surface of removing the mounting panel. In the use of buffer base and last drill bit main part, when last drill bit main part received the impact, go up the drill bit main part this moment and will compress movable plate and moisture absorption silica gel with the inside to buffer base to make the attenuator can produce the damping effect, in order to cushion the vibration amplitude, thereby reduced the impact that this drill bit received, improved the security and the durability of this drill bit when using.

Description

PDC drill bit with buffer structure

Technical Field

The utility model belongs to the technical field of the PDC drill bit, specifically be a PDC drill bit with buffer structure.

Background

The PDC is a drill bit with a polycrystalline diamond compact, which is a cutting type drill bit made by embedding the polycrystalline diamond compact in a drill bit steel body (or welding the polycrystalline diamond compact in a drill bit matrix), and the polycrystalline diamond compact is used as a cutting edge to break rocks in a negative edge rake angle shearing mode

As disclosed in application with publication number CN216950252U disclose a novel drill bushing annex PDC drill bit, including the drill bit body, the bottom fixedly connected with main wing of bit body, and the quantity of main wing is two, the bottom fixedly connected with vice wing of bit body, and the quantity of vice wing is two, main wing and vice wing are cross distribution, two main wing is connected in the bottom central point of drill bit body, two the bottom of main wing is provided with central cutting tooth, and central cutting tooth is located the bottom central point of drill bit body, the top of drill bit is provided with the joint, and the top of joint is provided with the chamfer, the surface of joint is provided with the tapering, the surface of joint is provided with the screw thread. The utility model discloses, through set up central cutting tooth on two main blades that are connected, and central cutting tooth is located the bottom central point of bit body, and "top core" sweeps the condition emergence of motionless when effectively preventing to bore the annex.

But the buffering effect of this application is not good enough, and after the live time has been of a specified duration, the PDC drill bit is damaged easily, has influenced life.

SUMMERY OF THE UTILITY MODEL

The purpose of this application lies in: in order to solve the above-mentioned proposed problems, a PDC bit having a buffer structure is provided.

The technical scheme adopted by the application is as follows: the utility model provides a PDC drill bit with buffer structure, includes buffer base, buffer base's inside sliding connection has the movable plate, the upper surface of movable plate is provided with the drill bit main part, the top fixedly connected with drill bit of going up the drill bit main part, the bottom of movable plate is provided with moisture absorption silica gel, moisture absorption silica gel bonds with a side of movable plate contact has the trompil rubber, moisture absorption silica gel's bottom bonds and has the removal mounting panel, and removes mounting panel sliding connection in the inner wall of sliding tray, buffer base's bottom inner wall fixed mounting has the attenuator, the top setting of attenuator is at the lower surface of removal mounting panel.

Through adopting above-mentioned technical scheme, in the use of buffer base and last drill bit main part, when last drill bit main part received the impact, go up the drill bit main part this moment and will compress movable plate and moisture absorption silica gel with the inside to buffer base to make the attenuator can produce the damping action, in order to cushion the vibration amplitude, thereby reduced the impact that this drill bit received, improved the security and the durability of this drill bit when using.

In a preferred embodiment, sliding grooves are formed in the inner walls of the left side and the right side of the buffer base, side limiting protrusions are fixedly mounted on the left side and the right side of the moving plate, and the inner portions of the sliding grooves are in sliding connection with the side limiting protrusions.

Through adopting above-mentioned technical scheme for the in-process that the movable plate reciprocated in the inside of buffering base, the side spacing arch can be blocked in the inside of sliding tray, makes the movable plate can not take place the skew easily, has improved the stability when using.

In a preferred embodiment, the left and right sides of the moisture-absorbing silicone rubber are adhered with side soft rubber.

Through adopting above-mentioned technical scheme, the elasticity of moisture absorption silica gel when using has been improved as far as possible, has increased the buffer capacity of drill bit.

In a preferred embodiment, the surface of both sides of going up the drill bit main part symmetry has seted up spacing side spout, the inside of buffer base and the welding of the department that corresponds of spacing side spout have with spacing of spacing side spout looks adaptation spacing.

Through adopting above-mentioned technical scheme for go up the drill bit main part and can not take place the skew easily when the inside of buffer base removes, stability when having improved the use.

In a preferred embodiment, a bottom mounting screw head is welded to the bottom center of the buffer base.

Through adopting above-mentioned technical scheme, can install buffer base through end installation thread head, stability when having improved the use.

In a preferred embodiment, the bottom of the left side and the bottom of the drill bit are welded with mounting side plates, the mounting side plates are in threaded connection with fixing screws through threaded holes formed in the mounting side plates, and fastening threaded holes matched with the fixing screws are formed in the two sides, located on the upper surface of the upper drill bit main body, of the drill bit.

Through adopting above-mentioned technical scheme, when the drill bit takes place the damage, can pass through this moment) installation curb plate, clamping screw and fastening screw hole change, can change the drill bit after screwing out clamping screw from the inside of fastening screw hole to the convenience of drill bit when using has been improved.

In conclusion, due to the adoption of the technical scheme, the beneficial effects of the application are as follows:

in this application, in the use of buffer base and last drill bit main part, when last drill bit main part received the impact, last drill bit main part this moment will with to buffer base's inside compress movable plate and moisture absorption silica gel to make the attenuator can produce the damping action, in order to cushion the vibration amplitude, thereby reduced the impact that this drill bit received, improved the security and the durability of this drill bit when using.

Drawings

FIG. 1 is a schematic view of a drill bit according to the present application;

FIG. 2 is a schematic view of an internal structure of the buffer base of the present application;

FIG. 3 is an enlarged view taken at B in FIG. 1 of the present application;

fig. 4 is an enlarged view of fig. 1 a in the present application.

The labels in the figure are: 1. a buffer base; 2. an upper bit body; 3. a drill bit; 4. a limiting side chute; 5. a threaded head is arranged at the bottom; 6. installing a side plate; 7. fixing the screw rod; 8. fastening the threaded hole; 9. a limiting strip; 10. moving the plate; 11. a side limiting bulge; 12. a sliding groove; 13. side soft rubber sheets; 14. moisture absorption silica gel; 15. a damper; 16. and moving the mounting plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is obvious that the described embodiments are some 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.

With reference to figures 1-3 of the drawings,

example (b):

the utility model provides a PDC drill bit with buffer structure, including buffer base 1, buffer base 1's inside sliding connection has movable plate 10, the upper surface of movable plate 10 is provided with drill bit main part 2, the top fixedly connected with drill bit 3 of going up drill bit main part 2, the bottom of movable plate 10 is provided with moisture-absorbing silica gel 14, moisture-absorbing silica gel 14 bonds with the side that movable plate 10 contacts and has the trompil rubber, moisture-absorbing silica gel 14's bottom bonds has removal mounting panel 16, and remove mounting panel 16 sliding connection in the inner wall of sliding tray 12, buffer base 1's bottom inner wall fixed mounting has attenuator 15, attenuator 15's top sets up the lower surface at removal mounting panel 16, in buffer base 1 and last drill bit main part 2's use, when last drill bit main part 2 has received the impact, go up drill bit main part 2 this moment and compress 10 and moisture-absorbing silica gel 14 with the inside to buffer base 1, thereby make attenuator 15 can produce the damping, with cushioning the vibration range, thereby the impact that this drill bit received has been reduced, the safety and the durability movable plate when this drill bit uses have been improved. .

Sliding tray 12 has been seted up to the left and right sides inner wall of buffer base 1, and the left and right sides fixed mounting of movable plate 10 has the spacing arch of side 11, the inside of sliding tray 12 and the protruding 11 looks sliding connection of side spacing to make the in-process that the movable plate 10 reciprocated in buffer base 1's inside, the protruding 11 of side spacing can be blocked in the inside of sliding tray 12, make movable plate 10 can not take place the skew easily, improved the stability when using.

The left side and the right side of the moisture-absorbing silica gel 14 are bonded with the side soft rubber sheets 13, so that the elasticity of the moisture-absorbing silica gel 14 in use is improved as much as possible, and the buffering capacity of the drill bit is improved.

Go up the bilateral surface symmetry of drill bit main part 2 and seted up spacing side spout 4, the inside of buffer base 1 and the corresponding department welding of spacing side spout 4 have with spacing 9 of side spout 4 looks adaptation for go up drill bit main part 2 and can not take place the skew easily when buffer base 1's inside removes, stability when having improved the use.

The bottom installation thread head 5 is welded at the bottom center of the buffer base 1, the buffer base 1 can be installed through the bottom installation thread head 5, and the stability in use is improved.

The welding of the left and right sides bottom of drill bit 3 has installation curb plate 6, installation curb plate 6 has clamping screw 7 through the screw hole threaded connection who sets up, the fastening screw hole 8 with 7 looks adaptations of clamping screw is seted up to the upper surface that goes up drill bit main part 2 in the both sides of drill bit 3, when drill bit 3 takes place the damage, this moment can be through installation curb plate 6, clamping screw 7 and fastening screw hole 8 change, can change drill bit 3 after screwing out clamping screw 7 from the inside of fastening screw hole 8, thereby the convenience of drill bit 3 when using has been improved.

The implementation principle of this application PDC drill bit embodiment with buffer structure does: during the use, in the use of buffer base 1 and last drill bit main part 2, when last drill bit main part 2 received the impact, last drill bit main part 2 will compress movable plate 10 and moisture absorption silica gel 14 with the inside to buffer base 1 this moment to make attenuator 15 can produce the damping effect, with cushion the vibration range, thereby reduced the impact that this drill bit received, improved the security and the durability of this drill bit when using.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A PDC drill bit with buffer structure, includes buffering base (1), its characterized in that: the inside sliding connection of buffer base (1) has movable plate (10), the upper surface of movable plate (10) is provided with drill bit main part (2), the top fixedly connected with drill bit (3) of going up drill bit main part (2), the bottom of movable plate (10) is provided with moisture absorption silica gel (14), moisture absorption silica gel (14) bonds with the side of movable plate (10) contact and has trompil rubber, the bottom of moisture absorption silica gel (14) bonds and has removal mounting panel (16), and removes mounting panel (16) sliding connection in the inner wall of sliding tray (12), the bottom inner wall fixed mounting of buffer base (1) has attenuator (15), the top setting of attenuator (15) is at the lower surface that removes mounting panel (16).

2. The PDC bit having a buffer structure of claim 1 wherein: sliding tray (12) have been seted up to the left and right sides inner wall of buffering base (1), the left and right sides fixed mounting of movable plate (10) has side spacing arch (11), the inside and the side spacing arch (11) looks sliding connection of sliding tray (12).

3. The PDC bit having a buffer structure of claim 1 wherein: the left side and the right side of the moisture absorption silica gel (14) are bonded with side soft rubber sheets (13).

4. The PDC bit having a buffer structure of claim 1 wherein: the drill bit is characterized in that the two side surfaces of the upper drill bit main body (2) are symmetrically provided with limiting side sliding grooves (4), and limiting strips (9) matched with the limiting side sliding grooves (4) are welded at the corresponding positions of the inner part of the buffer base (1) and the limiting side sliding grooves (4).

5. The PDC bit having a buffer structure of claim 1 wherein: and a bottom mounting threaded head (5) is welded at the center of the bottom of the buffer base (1).

6. The PDC bit having a buffer structure according to claim 1 wherein: the drill bit is characterized in that mounting side plates (6) are welded at the bottoms of the left side and the right side of the drill bit (3), the mounting side plates (6) are connected with fixing screw rods (7) through screw holes formed in a threaded manner, and fastening screw holes (8) matched with the fixing screw rods (7) are formed in the two sides, located on the drill bit (3), of the upper surface of the upper drill bit main body (2).