CN214836073U

CN214836073U - Cage-shaped drill bit for drilling

Info

Publication number: CN214836073U
Application number: CN202121016646.0U
Authority: CN
Inventors: 牛亚飞; 刘斯坦; 郭天娇
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-11-23
Anticipated expiration: 2031-05-11

Abstract

The application discloses a cage-shaped drill bit for drilling, which comprises a drill cylinder, a drill bit, a connecting mechanism, a rotating mechanism and a cutting mechanism; the connecting mechanism comprises an insert rod and a movable groove, the movable groove is formed in one end of the drill bit, the insert rod is arranged in the movable groove, the insert groove is formed in the surface of one end of the drill cylinder, a baffle is arranged in the movable groove and sleeved on the surface of the insert rod, a spring is fixedly connected to one side of the baffle and sleeved on the surface of the top end of the insert rod, the bottom end of the insert rod penetrates through the drill bit and extends into the insert groove, and the top end of the insert rod penetrates through the drill bit and is fixedly connected with a movable plate. This application easy operation, the interior screw thread through the outer screw thread of a brill section of thick bamboo one end and drill bit conveniently connects, then can improve firm in connection nature through inserted bar, movable groove, fly leaf, spring, baffle and slot, is convenient for install and dismantles.

Description

Cage-shaped drill bit for drilling

Technical Field

The application relates to the field of well drilling, in particular to a cage-shaped drill bit for drilling.

Background

Drilling refers to the operation of machining a hole in a solid material with a drill bit. During the geological exploration work, a drilling device is utilized to drill a columnar round hole with smaller diameter and larger depth into the underground, which is also called a well drilling. The bore holes for drilling oil and gas and ground water are larger in diameter. The borehole diameter and depth size depend on the geological mineral deposit depth and the purpose of the borehole.

General drill bit is not only efficiency poor when dredging some pipelines, when meetting some by cement, plant branch and stereoplasm soil block up the pipeline moreover, creeps into efficiency and will generally, and inconvenient taking earth is inconvenient, and general drill bit is inconvenient with boring a section of thick bamboo moreover and is connected and dismantle, influences the transportation and maintains the effect. Therefore, a cage-shaped drill for drilling is proposed to solve the above problems.

Disclosure of Invention

The cage-shaped drill bit for drilling is provided in the embodiment and used for solving the problem that the drill bit in the prior art is inconvenient to install and disassemble during drilling.

According to one aspect of the application, a cage-shaped drill bit for drilling is provided, which comprises a drill cylinder, a drill bit, a connecting mechanism, a rotating mechanism and a cutting mechanism;

the connecting mechanism comprises an insert rod and a movable groove, the movable groove is formed in one end of the drill bit, the insert rod is arranged in the movable groove, the insert groove is formed in the surface of one end of the drill cylinder, a baffle is arranged in the movable groove and sleeved on the surface of the insert rod, a spring is fixedly connected to one side of the baffle and sleeved on the surface of the top end of the insert rod, the bottom end of the insert rod penetrates through the drill bit and extends into the insert groove, and the top end of the insert rod penetrates through the drill bit and is fixedly connected with a movable plate.

Further, rotary mechanism includes support, roof and rotation groove, bore a rigid coupling roof in section of thick bamboo one side, support inner chamber one side installation second motor, the roof is connected to the second motor output, support inner wall rigid coupling rotation groove, support inner chamber one side installation shifting chute, the roof outer end is located the rotation inslot, two shifting wheels of roof one side installation.

Further, cutting mechanism includes movable plate and drive box, movable plate one side rigid coupling drive box, drive box inner chamber is equipped with the driving gear, driving gear one side is equipped with engaged with driven gear, movable plate one side is equipped with the rotating head, rotating head one end runs through movable plate and drive box and extends to drive box inner chamber rigid coupling driven gear.

Furthermore, a plurality of cutting knives are evenly distributed on the surface of the rotating head, one side of the moving plate is fixedly connected with an electric push rod, the electric push rod is fixedly connected with the top plate, and one end of the driven gear is rotatably connected with the inner wall of the driving box.

Furthermore, a sliding groove is formed in the drilling barrel, a sliding block wheel is arranged in the sliding groove, and one end of the sliding block wheel penetrates through the sliding groove and is fixedly connected with the moving plate.

Further, the thickness of the top plate is smaller than the width of the inner cavity of the rotating groove, the rotating groove and the moving groove are both of annular structures, and the support is of a concave structure.

Furthermore, the surface of one end of the drill cylinder is sleeved with a sealing gasket, the sealing gasket is positioned between the drill bit and the drill cylinder, the surface of one end of the drill bit is sleeved with an anti-corrosion gasket, one end of the drill cylinder is provided with an outer screw thread, and the drill bit is provided with an inner screw thread.

Further, the surface of the joint of the drill bit and the drill barrel is sleeved with a protective sleeve, the center of the inner wall of the protective sleeve is in contact with an anti-corrosion pad, a connecting bolt is arranged on one side of the protective sleeve and penetrates through the protective sleeve to be connected with a connecting thread groove on the surface of the drill bit and the drill barrel.

Furthermore, a plurality of tooth mouths are fixedly connected to the surface of one side of the drill bit, the tooth mouths are in a sawtooth shape, the connecting bolt is connected with the protective sleeve through threads, and the inner diameter of the protective sleeve is larger than the outer diameters of the drill bit and the drill cylinder.

Furthermore, the top and the bottom of the movable groove are provided with notches, the inner diameter of each notch is larger than the diameter of the inserted bar and smaller than the outer diameter of the baffle and the diameter of the spring, and the baffle is fixedly connected with the inserted bar.

Through the above-mentioned embodiment of this application, adopted coupling mechanism, solved the connection problem of drill bit and a section of thick bamboo that bores, gained the effect of convenient to install and dismantle.

Drawings

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

FIG. 1 is a schematic perspective view of one embodiment of the present application;

FIG. 2 is an overall schematic view of an embodiment of the present application;

FIG. 3 is a schematic front view of an embodiment of the present application;

FIG. 4 is a schematic perspective view of a drill bit according to one embodiment of the present application;

FIG. 5 is a schematic view of a drive cassette according to an embodiment of the present application;

fig. 6 is a partially enlarged view of a portion a of fig. 3 according to an embodiment of the present disclosure.

In the figure: 1. the drilling machine comprises a drilling barrel, 2, a sliding groove, 3, a driving gear, 4, a sliding block, 5, a first motor, 6, an electric push rod, 7, a moving wheel, 8, a support, 9, a moving groove, 10, a second motor, 11, a rotating groove, 12, a top plate, 13, a driving box, 14, a driven gear, 15, a moving plate, 16, a cutting knife, 17, a rotating head, 18, a drilling bit, 19, a tooth opening, 20, a connecting bolt, 21, a protective sleeve, 22, a connecting thread groove, 23, a sealing gasket, 24, an anti-corrosion gasket, 25, a plug rod, 26, a movable groove, 27, a movable plate, 28, a spring, 29, a baffle, 30 and a slot.

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.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

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 drill bit in the present embodiment can be applied to various drilling machines, for example, the following drilling machine is provided in the present embodiment, and the drill bit in the present embodiment can be used for the following drilling machine.

A drilling machine special for cleaning pipelines comprises a frame, wherein four traveling wheels are movably mounted at the bottom of the frame, a push frame is fixedly mounted at the top of the right end of the frame, a hydraulic oil tank positioned in the push frame is fixedly mounted at the top of the frame, two fixing plates which are respectively positioned at the left side and the right side of the traveling wheels are fixedly mounted on the front surface and the back surface of the frame, a supporting rod which penetrates through the fixing plates is inserted at the top of the fixing plates, a threaded cylinder which is in threaded connection with the supporting rod is embedded at the top of the fixing plates, an annular handle is fixedly mounted at the top of the supporting rod, a pad foot positioned below the frame is fixedly mounted at the bottom of the supporting rod, a connecting seat is fixedly mounted at the top of the frame, a bearing shell is movably mounted at the top of the frame, a hydraulic cylinder which is positioned at the right side of the connecting seat and is movably connected with the right side of the bearing shell is movably mounted at the top of the frame, and the push frame is obliquely arranged, the hydraulic cylinder is communicated with a hydraulic oil tank, two ends of the hydraulic cylinder are respectively hinged with the frame and the bearing shell, a transfer motor is fixedly arranged at the top of the bearing shell, a movable seat is fixedly arranged inside the bearing shell, limiting grooves are respectively arranged on the front surface and the back surface of the inner wall of the bearing shell, limiting plates respectively extending into the two limiting grooves are respectively fixedly arranged on the front surface and the back surface of the movable seat, a bearing seat positioned at the bottom of the drilling motor is fixedly arranged on the left side of the movable seat, a U-shaped opening is arranged on the left side of the frame, a rotating rod which is in transmission connection with the transfer motor and penetrates through the movable seat is movably arranged inside the bearing shell, pulleys in contact with the inner wall of the bearing shell are movably arranged on the front surface and the back surface of the movable seat, the drilling motor is fixedly arranged on the left side of the movable seat, the rotating rod is in threaded connection with the inner wall of the movable seat, and a fixed seat fixedly connected with the drilling motor is fixedly arranged on the left side of the movable seat, bear the bottom left side fixed mounting of shell and have the set casing, the output transmission of boring into the motor is connected with the top that runs through the set casing and extends to the inside drilling rod of set casing, and the bottom fixed mounting of drilling rod has the drill bit that is located the set casing inside, when using, can promote to push away the frame through the walking wheel with the frame

Remove the outside to required pipeline of decontaminating, rotate four bracing pieces, make it through outside screw thread and fixed plate downstream, make and fill up foot contact ground and produce less deformation, according to the pipeline and the ground contained angle of required clearance this moment, the pneumatic cylinder promotes to bear the weight of the shell and rotates through the connecting seat, after adjusting the angle, it rotates to transfer the motor, it is rotatory to drive the dwang, it removes to the pipeline at pulley and the spacing of bearing the shell to promote the sliding seat, the drilling rod slides in the inside of set casing, it drives the drilling rod to rotate to bore into the motor, make the drill bit clear up the siltation sediment matter, and use equipment takes out the dirt, can accomplish the cleaning operation, this device simple structure is reasonable, low in production cost, save maintenance cleaning cost, can be used to different slopes and topography, reduce the degree of difficulty of clearing up the pipeline, and the volume is relatively less, more conveniently use the operation.

Of course, the present embodiment can also be used for drilling machines mounted on other structures. The details are not repeated here, and the drill bit of the embodiment of the present application is described below.

Referring to fig. 1-6, a cage drill for drilling includes a drill barrel 1, a drill 18, a connecting mechanism, a rotating mechanism and a cutting mechanism;

the connecting mechanism comprises an insert rod 25 and a movable groove 26, the movable groove 26 is formed in one end of the drill bit 18, the insert rod 25 is arranged inside the movable groove 26, a slot 30 is formed in the surface of one end of the drill cylinder 1, a baffle 29 is arranged inside the movable groove 26, the baffle 29 is sleeved on the surface of the insert rod 25, a spring 28 is fixedly connected to one side of the baffle 29, the spring 28 is sleeved on the surface of the top end of the insert rod 25, the bottom end of the insert rod 25 penetrates through the drill bit 18 and extends to the inside of the slot 30, the top end of the insert rod 25 penetrates through the drill bit 18 and is fixedly connected with a movable plate 27, the drill bit 18 and the drill cylinder 1 can be conveniently connected, and the mounting and dismounting efficiency is improved.

The rotary mechanism comprises a support 8, a top plate 12 and a rotary groove 11, wherein the top plate 12 is fixedly connected to one side of the drill cylinder 1, a second motor 10 is installed on one side of an inner cavity of the support 8, the output end of the second motor 10 is connected with the top plate 12, the rotary groove 11 is fixedly connected to the inner wall of the support 8, a movable groove 9 is installed on one side of the inner cavity of the support 8, the outer end of the top plate 12 is located in the rotary groove 11, and two movable wheels 7 are installed on one side of the top plate 12 to control the drill bit 18 to rotate when the drill bit is pushed; the cutting mechanism comprises a moving plate 15 and a driving box 13, one side of the moving plate 15 is fixedly connected with the driving box 13, a driving gear 3 is arranged in an inner cavity of the driving box 13, a driven gear 14 meshed with the driving gear 3 is arranged on one side of the driving gear 3, a rotating head 17 is arranged on one side of the moving plate 15, one end of the rotating head 17 penetrates through the moving plate 15 and the driving box 13 and extends to the inner cavity of the driving box 13 to be fixedly connected with the driven gear 14, and therefore the cutting mechanism is convenient for cutting sundries such as branches and the like in a pipeline; a plurality of cutting knives 16 are uniformly distributed on the surface of the rotating head 17, one side of the moving plate 15 is fixedly connected with an electric push rod 6, the electric push rod 6 is fixedly connected with the top plate 12, one end of the driven gear 14 is rotatably connected with the inner wall of the driving box 13, and the cutting efficiency can be improved; a sliding groove 2 is formed in the drilling barrel 1, a sliding block wheel 4 is arranged in the sliding groove 2, and one end of the sliding block wheel 4 penetrates through the sliding groove 2 and is fixedly connected with a moving plate 15, so that the guide efficiency is facilitated; the thickness of the top plate 12 is smaller than the width of the inner cavity of the rotating groove 11, the rotating groove 11 and the moving groove 9 are both of annular structures, and the support 8 is of a concave structure, so that the top plate 12 can rotate in the rotating groove 11 conveniently; the surface of one end of the drill cylinder 1 is sleeved with a sealing gasket 23, the sealing gasket 23 is positioned between the drill bit 18 and the drill cylinder 1, the surface of one end of the drill bit 18 is sleeved with an anti-corrosion gasket 24, one end of the drill cylinder 1 is provided with an external screw thread, and the drill bit 18 is provided with an internal screw thread, so that the sealing effect can be achieved; the surface of the joint of the drill bit 18 and the drill barrel 1 is sleeved with a protective sleeve 21, the center of the inner wall of the protective sleeve 21 is contacted with an anti-corrosion pad 24, one side of the protective sleeve 21 is provided with a connecting bolt 20, the connecting bolt 20 penetrates through the protective sleeve 21 to be connected with the drill bit 18 and a connecting thread groove 22 on the surface of the drill barrel 1, and the joint of the drill bit 18 and the drill barrel 1 is protected conveniently; the surface of one side of the drill bit 18 is fixedly connected with a plurality of tooth openings 19, the tooth openings 19 are in a sawtooth shape, the connecting bolt 20 is connected with a protective sleeve 21 through threads, and the inner diameter of the protective sleeve 21 is larger than the outer diameters of the drill bit 18 and the drill cylinder 1, so that the drilling efficiency can be improved; the top and the bottom of the movable groove 26 are provided with notches, the inner diameter of each notch is larger than the diameter of the inserted rod 25 and smaller than the outer diameter of the baffle 29 and the diameter of the spring 28, and the baffle 29 is fixedly connected with the inserted rod 25 so as to be convenient for connecting the drill bit 18 with the drill barrel 1.

The utility model discloses when using, the electric components that appear in this application all external intercommunication power and control switch when using, the outer screw thread on drill 1 surface and the interior screw thread of drill bit 18 one end can conveniently be connected drill 1 and drill bit 18, when connecting, can have one deck sealed pad 23 on drill 1 surface cover, and make sealed pad 23 be located between drill bit 18 and drill 1, when connecting drill 1 and drill bit 18, can control fly leaf 27 and drive inserted bar 25 and remove, after drill 1 and drill bit 18 connect, can loosen fly leaf 27, can promote baffle 29 through the elasticity of spring 28 and remove, can drive inserted bar 25 and remove downwards when baffle 29 removes, can inject in slot 30, can improve the stability and the fastness of the connection of drill 1 and drill bit 18;

a layer of anti-corrosion pad 24 is sleeved on the surface of one end of the drill bit 18, then the protective sleeve 21 is sleeved on the anti-corrosion pad 24, so that the protrusion on the inner side of the protective sleeve 21 is connected with the surface of the anti-corrosion pad 24, and then the connecting bolt 20 can be screwed to be inserted into the connecting thread groove 22, so that the protective sleeve 21 can be installed conveniently;

when the pipeline is dredged, the bracket 8 can be connected through an external propelling device, and during the propelling process, the top plate 12 can be driven to rotate by the second motor 10, the top plate 12 will slide in the rotating groove 11, so as to drive the drill cylinder 1 and the drill bit 18 to rotate together, and the moving wheel 7 can also play a stabilizing effect when moving in the moving groove 9, so that the rotation stability of the drill cylinder 1 is ensured, the drilling is facilitated through the tooth opening 19, when a branch and soil are encountered, the driving gear 3 is driven to rotate by the first motor 5, the driven gear 14 is meshed with the driving gear 3 to drive the rotating head 17 to rotate, so that some humus soil can be cut, can cut through cutting knife 16 to all hard soil, concrete, electric putter 6 can promote the removal of movable plate 15 moreover, plays the direction through slider wheel 4 in the inside slip of spout 2, is convenient for improve the cutting effect.

The application has the advantages that:

1. the drill bit is simple to operate, the outer screw thread at one end of the drill cylinder and the inner screw thread of the drill bit are conveniently connected, and then the connection firmness can be improved through the inserted rod, the movable groove, the movable plate, the spring, the baffle and the slot, so that the drill bit is convenient to mount and dismount;

2. the drill bit has a reasonable structure, the drill cylinder and the drill bit can be driven to rotate by the support, the second motor and the top plate, the drill cylinder can be guaranteed to be stable when rotating by the moving groove, the moving wheel and the rotating groove, and the tooth mouth matched with the surface of the drill bit can be suitable for coring from the inside of a pipeline blocked by cement, soil, wood and the like, so that the aim of dredging the pipeline is fulfilled;

3. this application can cut through electric putter, first motor, drive box, driven gear, driving gear, movable plate, spout, slider wheel, cutting knife and rotating head, is convenient for cut some debris of inside and smashes, can improve the mediation effect.

It is well within the skill of those in the art to implement, without undue experimentation, the present application is not directed to software and process improvements, as they relate to circuits and electronic components and modules.

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. A cage-shaped drill bit for drilling is characterized in that: comprises a drill cylinder (1), a drill bit (18), a connecting mechanism, a rotating mechanism and a cutting mechanism;

coupling mechanism includes inserted bar (25) and activity groove (26), activity groove (26) are seted up to drill bit (18) one end, activity groove (26) inside is equipped with inserted bar (25), bore a section of thick bamboo (1) one end surface and set up slot (30), activity groove (26) inside is equipped with baffle (29), baffle (29) cover is on inserted bar (25) surface, baffle (29) one side rigid coupling spring (28), spring (28) cover is on inserted bar (25) top surface, inserted bar (25) bottom is run through drill bit (18) and is extended to inside slot (30), drill bit (18) rigid coupling fly leaf (27) is run through on inserted bar (25) top.

2. A cage drill bit for drilling according to claim 1, wherein: the rotary mechanism comprises a support (8), a top plate (12) and a rotating groove (11), the drilling barrel (1) is fixedly connected with the top plate (12) on one side, a second motor (10) is installed on one side of an inner cavity of the support (8), the top plate (12) is connected with the output end of the second motor (10), the rotating groove (11) is fixedly connected with the inner wall of the support (8), a moving groove (9) is installed on one side of the inner cavity of the support (8), the outer end of the top plate (12) is located in the rotating groove (11), and two moving wheels (7) are installed on one side of the top plate (12).

3. A cage drill bit for drilling according to claim 1, wherein: cutting mechanism includes movable plate (15) and drive box (13), movable plate (15) one side rigid coupling drive box (13), drive box (13) inner chamber is equipped with driving gear (3), driving gear (3) one side is equipped with engaged with driven gear (14), movable plate (15) one side is equipped with rotates head (17), it runs through movable plate (15) and drive box (13) and extends to drive box (13) inner chamber rigid coupling driven gear (14) to rotate head (17) one end.

4. A cage drill bit for drilling according to claim 3, wherein: the surface of the rotating head (17) is evenly distributed with a plurality of cutting knives (16), one side of the moving plate (15) is fixedly connected with an electric push rod (6), the electric push rod (6) is fixedly connected with the top plate (12), and one end of the driven gear (14) is rotatably connected with the inner wall of the driving box (13).

5. A cage drill bit for drilling according to claim 1, wherein: a sliding groove (2) is formed in the drilling barrel (1), a sliding block wheel (4) is arranged in the sliding groove (2), and one end of the sliding block wheel (4) penetrates through the sliding groove (2) and is fixedly connected with a moving plate (15).

6. A cage drill bit for drilling according to claim 2, wherein: the thickness of the top plate (12) is smaller than the width of the inner cavity of the rotating groove (11), the rotating groove (11) and the moving groove (9) are both of annular structures, and the support (8) is of a concave structure.

7. A cage drill bit for drilling according to claim 1, wherein: the drill bit is characterized in that a sealing gasket (23) is sleeved on the surface of one end of the drill cylinder (1), the sealing gasket (23) is located between the drill bit (18) and the drill cylinder (1), an anti-corrosion pad (24) is sleeved on the surface of one end of the drill bit (18), an outer screw thread is arranged at one end of the drill cylinder (1), and an inner screw thread is arranged at the drill bit (18).

8. A cage drill bit for drilling according to claim 1, wherein: the drill bit (18) and the drill barrel (1) are connected through a protective sleeve (21), the center of the inner wall of the protective sleeve (21) is in contact with an anti-corrosion pad (24), a connecting bolt (20) is arranged on one side of the protective sleeve (21), and the connecting bolt (20) penetrates through the protective sleeve (21) to be connected with a connecting thread groove (22) on the surfaces of the drill bit (18) and the drill barrel (1).

9. A cage drill bit for drilling according to claim 8, wherein: drill bit (18) one side surface rigid coupling a plurality of tooth mouths (19), tooth mouth (19) are the cockscomb structure, connecting bolt (20) are through threaded connection protective sheath (21), protective sheath (21) internal diameter is greater than drill bit (18) and bores a section of thick bamboo (1) external diameter.

10. A cage drill bit for drilling according to claim 1, wherein: the top and the bottom of the movable groove (26) are provided with notches, the inner diameter of each notch is larger than the diameter of the inserted rod (25) and smaller than the outer diameter of the baffle (29) and the diameter of the spring (28), and the baffle (29) is fixedly connected with the inserted rod (25).