CN211598525U - Wall-breaking and diameter-expanding combined drill bit - Google Patents
Wall-breaking and diameter-expanding combined drill bit Download PDFInfo
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- CN211598525U CN211598525U CN201921899717.9U CN201921899717U CN211598525U CN 211598525 U CN211598525 U CN 211598525U CN 201921899717 U CN201921899717 U CN 201921899717U CN 211598525 U CN211598525 U CN 211598525U
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Abstract
The utility model discloses a broken wall hole enlargement combined type drill bit, include: the upper end of the twist drill is provided with a drill handle; the center of the reaming bit is provided with an inner hole for penetrating through the twist drill; further comprising: the lower end of the torque shaft is connected with the upper end of the reaming bit, and the center of the torque shaft is provided with a central hole for penetrating through a bit connecting rod; the upper end of the torque shaft is connected with the piston mechanism, and the center of the piston mechanism is provided with a center hole for penetrating through the drill bit connecting rod; the lower half section of the drill connecting rod is provided with a twist drill mounting hole for mounting a drill handle, and the drill connecting rod sequentially penetrates through the torque shaft and the piston mechanism upwards. The utility model is used for the profit well bores the cement stopper in-process and improves and bore stopper speed, and it is consuming time to reduce the construction. The problem of bore the slow actual problem of cement stopper footage is solved, and through changing the stopper mode of boring, effectual broken stopper face and bore the cement stopper that removes, improve workover ageing.
Description
Technical Field
The utility model belongs to the technical field of oil development trade borehole operation construction technique and specifically relates to broken wall hole enlargement combined type drill bit.
Background
In recent years, with the development of oil fields, the construction processes such as cement plug sealing, old formation recovery, shallow formation plugging and the like have increased year by year, and drilling and plugging are frequent procedures. The drilling and plugging tool used on site at present mainly depends on a screw drilling tool matched with a tricone bit for use and is limited by parameters such as drilling pressure, discharge capacity, lowering speed and the like. The average footage is less than 0.5 m/h. The main reason is that the oil well cement used for well sealing at present is added with a curing agent, the cured cement plug improves the sealing effect, and the expansion coefficient and the flexibility of the cement plug are also increased. The mode of causing the roller bit to break the mud plug surface is changed from the original gnawing performance to frictional drilling plug; and secondly, the drilling pressure of the drilling plug of the screw drill is limited, the drilling plug is slowly advanced, and the time efficiency is reduced.
The existing drilling and plugging tools used on site mainly comprise a screw drill and a tricone bit, the average drilling and plugging time of a single well reaches more than 15.5 hours, the drilling and plugging tool is slow in footage, the labor intensity of workers is high, and the requirements of site drilling and plugging construction cannot be met. The special drilling and plugging tool for drilling the ultra-fine cement and adding the cement curing agent is developed, the requirement of operation site construction is met, the operation construction quality and the timeliness are improved, and the special drilling and plugging tool has economic value and practical value. The drilling and reaming type wall breaking and diameter expanding composite drill bit overcomes the toughness of a plug surface to the maximum extent by matching a drilling and plugging mode of drilling and reaming wall breaking and drilling with hole expanding, and achieves the purposes of accelerating drilling and plugging into a ruler and improving the drilling and plugging timeliness.
The existing drilling and plugging tools used on site mainly comprise a screw drill and a tricone bit, the average drilling and plugging time of a single well reaches more than 15.5 hours, the drilling and plugging tool is slow in footage, the labor intensity of workers is high, and the requirements of site drilling and plugging construction cannot be met. No effective tool or method for solving such problems is currently found by web search.
Application No.: 201220562636.1, filing date: 2012-10-30 reducing drill bit relates to drilling equipment, in particular to can oil well with drill bit of reducing, reducing drill bit include the drill bit body, drill bit body lower part is equipped with swing joint's blade with it, the body inside still be equipped with sliding connection's piston with it, the one end of piston links to each other with the blade, piston controlling means is connected to the other end. A reducing drilling tool can be through the motion of imitating Buddha of piston control device control piston and then change the footpath that rises of blade, realize boring the oil recovery well, the utility model discloses simple structure, the practicality is strong, but industrial production.
Application No.: 201711011877.0, filing date: 2017-10-26 is a rigid drifting drilling tool assembly for a three-dimensional horizontal well for petroleum drilling, which comprises a drill rod, an upper stabilizer, a weighted drill rod, a lower stabilizer and a drill bit, wherein the drill rod, the weighted drill rod and the drill bit are sequentially and fixedly installed together from top to bottom, and the upper stabilizer and the lower stabilizer are respectively and fixedly installed in the middle of the weighted drill rod at intervals from top to bottom. The invention has reasonable and compact structure and convenient use; through setting up stabilizer, lower stabilizer, balancing weight to can increase the rigidity of bottom drilling tool combination in a flexible way, truer imitates the rigidity of well completion tubular column, ensures the drifting quality, improves the effect of drifting and restoreing the wall of a well, guarantees going into smoothly of well completion tubular column.
Application No.: 201710394322.2, filing date: 2017-05-29 discloses an efficient oil field drilling bit, which comprises a device body, wherein a bit body is arranged at the top of the device body, balls are uniformly arranged on the surface of the bit body, a water outlet hole is formed in one side of each ball, a connecting pipe is arranged on one side of the bit body, a water inlet pipe is arranged on the surface of each connecting pipe, a first thread groove is formed in the inner wall of each connecting pipe, a motor connector is arranged on one side of each connecting pipe, a second thread groove is formed in the outer wall of each motor connector, a water tank is arranged in each connecting pipe, a plurality of water outlet pipes are uniformly arranged at. The device has solved current oil field well drilling drill bit when to the comparatively arid ground in area, because the ground is comparatively arid, and is higher to the wearing and tearing consumption of drill bit, causes the wasting of resources serious, and simultaneously in arid area, the work efficiency of drill bit is lower, causes the inconvenient problem of use.
Application No.: 201721044079.3 application date: 2017-08-18 relates to an reaming bit for oilfield drilling operation, which comprises an upper connector, a reaming bit body and a main bit body, wherein the upper connector, the reaming bit body and the main bit body are sequentially connected through threads from top to bottom, two long grooves are symmetrically formed in two sides of the reaming bit body, reaming blades are installed in the long grooves, the lower ends of the reaming blades are hinged to the lower ends of the long grooves, wedge blocks are arranged between the reaming blades and the bottoms of the long grooves, a thread sleeve is arranged on the upper side of each wedge block and connected to the outer side of the reaming bit body through threads, the lower end of each thread sleeve abuts against the top of each wedge block, liquid injection channels are respectively arranged in the centers of the reaming bit body and the main bit body, each liquid injection channel is divided into at least two injection branches in the main bit. The utility model discloses articulate the reaming wing on the reaming bit body, can drive the voussoir motion through twisting the thread bush, and then realize asking the regulation of reaming wing angle.
Application No.: 201420112572.4, filing date: 2014-03-12 discloses an oil well drill bit, which belongs to the field of petroleum machinery accessories and mainly solves the problems that rock-soil layers are complex in composition and easily deflect in the drilling process of the existing oil well; the cable is connected with the motor, the output end of the motor is connected with the tail end of the guide drill bit through the coupler, and the front end of the guide drill bit is connected with the tail end of the advancing drill bit; the tail end of the pilot bit is provided with a cylindrical bulge, the cylindrical surface of the pilot bit is provided with an annular pilot dovetail which is axially distributed for three circles, and the front end of the pilot bit is in a conical structure; the guide dovetail and the guide drill bit are designed into an integrated structure; the tail end of the advancing drill bit is connected with the front end of the guide drill bit in a welding mode. The utility model discloses owing to increased the direction drill bit structure in the use for it is more accurate among the probing process, and the straightness accuracy is better.
Technical scheme and the technical problem that will solve and the beneficial effect who produces of above disclosure technique all with the utility model discloses inequality, to the utility model discloses more technical characteristics and the technical problem and the beneficial effect that will solve all do not have the technological inspiration in the above technical document that discloses.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a broken wall hole enlargement combined type drill bit for the profit well bores the cement stopper in-process and improves and bore stopper speed, and it is consuming time to reduce the construction. The problem of bore the slow actual problem of cement stopper footage is solved, and through changing the stopper mode of boring, effectual broken stopper face and bore the cement stopper that removes, improve workover ageing.
In order to achieve the above object, the utility model discloses a following technical scheme, broken wall hole enlargement combined type drill bit, include:
the upper end of the twist drill is provided with a drill handle;
the center of the reaming bit is provided with an inner hole for penetrating through the twist drill;
further comprising:
the lower end of the torque shaft is connected with the upper end of the reaming bit, and the center of the torque shaft is provided with a central hole for penetrating through a bit connecting rod;
the upper end of the torque shaft is connected with the piston mechanism, and the center of the piston mechanism is provided with a center hole for penetrating through the drill bit connecting rod;
the lower half section of the drill connecting rod is provided with a twist drill mounting hole for mounting a drill handle, and the drill connecting rod sequentially penetrates through the torque shaft and the piston mechanism upwards.
Further, the piston mechanism includes:
the cylinder body is in an axial hollow tubular shape;
the piston is arranged in the inner cavity of the cylinder in a sliding sealing manner;
and the spring is arranged in the cylinder body, the lower end of the spring is connected with the upper end of the piston, and the lower end of the piston is connected with the upper end of the torque shaft.
Further, still include:
the upper joint, the barrel upper end is connected to the upper joint lower extreme, and the upper joint lower port inner wall sets up the perforated plate, and a plurality of eccentric axial holes that link up of axial are seted up to the perforated plate, and the perforated plate center still sets up the centre bore that is used for passing the drill bit connecting rod, and the back is passed to the drill bit connecting rod, at drill bit connecting rod upper end mounting nut, the top of the spring top is at the upper joint lower extreme.
Further, still include:
the lower joint is connected to the lower end of the cylinder body, and the center of the lower joint is provided with a center hole used for penetrating through the torque shaft.
Further, the center hole of the lower joint is a round-corner rectangular hole.
Further, the torque shaft is also in a shape of a rounded rectangle and is uniformly assembled with the central hole of the lower joint.
Further, the upper joint is fixed with the cylinder body through a pin.
Furthermore, a sealing groove is formed in the outer wall of the piston, and a sealing ring is installed in the sealing groove.
Furthermore, eight drilling teeth with the length of 175mm and the width of 10mm are uniformly distributed on the outer wall of the reaming bit.
Furthermore, the drill teeth are provided with inserted cutting columns.
Compared with the prior art, the utility model following beneficial effect has:
the special drilling and plugging tool is mainly used for drilling and removing the solidified cement plug in the oil-water well repairing process. The practical problems of low speed and low efficiency of drilling the cement plug are solved, and the drilling and removing of the cement plug are carried out in a 'point broken surface' mode. The drilling and plugging mode of conventional construction is changed, and the problems of large plug surface toughness and slow rule feeding are effectively solved. The operation time efficiency of the well repairing drill plug is improved.
When the plug is drilled, the pump truck provides liquid flow, the twist drill bit contacts with the plug surface firstly, the plug surface is subjected to wall breaking and drilling under the action of drilling pressure and torque, pressurization and rotation are continued, the reaming drill bit reams and plugs under the action of torque and drilling pressure along the wall breaking hole, drilled chips are carried out of a shaft through the liquid flow, and the drilling and plugging process is deepened to the depth. The drill web can be replaced according to different casing diameters to meet the requirements of casing drill plug construction of different sizes. The tool is fast in drilling and plugging speed, and simple, safe and reliable in operation. The application range is wide, and the drilling plug aging can be greatly improved.
The utility model discloses reform transform the project organization, improved and bored stopper speed. The drilling and plugging mode is improved, and the wall breaking efficiency is improved. And a drilling and plugging mode is modified, so that the drilling pressure is controllable. The tool is put into the well along with the construction pipe column, and the cement plug solidified in the shaft is drilled out.
Drawings
Fig. 1 is a schematic structural diagram of the composite drill for breaking and expanding walls;
FIG. 2 is a schematic view of an upper joint structure;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic view of a reamer bit configuration;
FIG. 5 is a bottom view of FIG. 4;
FIG. 6 is a schematic view of a twist drill;
FIG. 7 is a schematic view of a drill bit link configuration;
3 FIG. 3 8 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3
Fig. 9 is a cross-sectional view taken along line C-C of fig. 1.
In the figure: the drilling machine comprises a twist drill bit 1, a reaming drill bit 2, a torque shaft 3, a drill bit connecting rod 4, a lower joint 5, a piston 6, a cylinder 7, a sealing ring 8, a spring 9, a pin 10, a nut 11 and an upper joint 12.
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.
Example 1:
referring to fig. 1 to 9, the present invention provides a technical solution: broken wall hole enlargement combined type drill bit includes:
the drill bit comprises a twist drill bit 1, wherein the upper end of the twist drill bit is a drill bit handle;
the reaming bit 2 is provided with an inner hole in the center for penetrating through the twist bit;
further comprising:
the lower end of the torque shaft is connected with the upper end of the reaming bit, the lower end of the torque shaft can be directly welded with the upper end of the reaming bit, and the center of the torque shaft is provided with a central hole for penetrating through a drill bit connecting rod;
the upper end of the torque shaft is connected with the piston mechanism, and the center of the piston mechanism is provided with a center hole for penetrating through the drill bit connecting rod;
and the lower half section of the drill connecting rod is provided with an auger bit mounting hole for mounting a drill handle, the drill handle is fixed in the mounting hole through a radial pin, and the drill connecting rod upwards sequentially penetrates through the torque shaft and the piston mechanism.
Further, the piston mechanism includes:
the cylinder body 7 is in an axial hollow tubular shape;
the piston 6 is arranged in the inner cavity of the cylinder in a sliding and sealing manner;
and the spring 9 is arranged in the cylinder body, the lower end of the spring is connected with the upper end of the piston, and the lower end of the piston is connected with the upper end of the torque shaft.
Further, still include:
the upper joint 12, the barrel upper end is connected to the upper joint lower extreme, and the upper joint lower port inner wall sets up the perforated plate, and a plurality of eccentric axial holes that link up of axial are seted up to the perforated plate, and the perforated plate center still sets up the centre bore that is used for passing the drill bit connecting rod, and after the drill bit connecting rod passed, at drill bit connecting rod upper end mounting nut 11, the top of spring pushes up at the upper joint lower extreme.
Further, still include:
and the lower joint 5 is connected to the lower end port of the cylinder body, and the center of the lower joint is provided with a center hole for penetrating through the torque shaft.
Further, the center hole of the lower joint is a round-corner rectangular hole.
Further, the torque shaft is also in a shape of a rounded rectangle and is uniformly assembled with the central hole of the lower joint.
Further, the upper joint is fixed with the cylinder body through a pin 10.
Furthermore, a sealing groove is formed in the outer wall of the piston, and a sealing ring is installed in the sealing groove.
Furthermore, eight drilling teeth with the length of 175mm and the width of 10mm are uniformly distributed on the outer wall of the reaming bit.
Furthermore, the drill teeth are provided with inserted cutting columns.
The invention discloses a wall-breaking and diameter-expanding combined drill bit, which comprises an upper connector, a cylinder body, a piston, a lower connector, a locking nut, a drill bit connecting rod, an auger bit, a torque shaft, a reaming bit, a spring and ten parts.
And (3) upper joint: the bottom eight holes are uniformly distributed and provide channels for circulating liquid. And (3) upper joint: the maximum outer diameter phi is 98mm, the inner diameter phi is 71mm, the length is 120mm, and the upper end of the joint is 27/8TBG internal threads for connecting an oil pipe; the bottom of the upper joint is provided with a through hole with the diameter of 14mm, eight holes are uniformly distributed into a circle, and a square hole with the length of 25mm is arranged in the middle and is used for connecting a drill bit connecting rod and a circulating water hole; the lower end standard external thread is used for connecting the cylinder at the lower part of the tool.
Barrel: and the upper joint and the lower joint are used for installing the spring, the piston and providing a movable stroke for the torque shaft. The cylinder body can also be called as a cylinder body: the outer diameter phi is 104mm, the inner diameter phi is 84mm, the length is 435mm, standard internal threads are processed at two ends of the connecting rod and the lower joint and are used for keeping sealing and fastening, and the connecting rod and the lower joint are used for installing springs and pistons and providing movable stroke for a torque shaft.
A piston: the upper part of the torque rod is contacted with the spring to play a role of bearing up and down. A piston: the outer diameter phi is 84mm, and the inner diameter phi is 50 mm. The upper part of the torque rod is contacted with the spring and is limited and fixed through the lower joint, so that the effect of bearing up and down is achieved.
A lower joint: used for connecting the cylinder body, the fixed torque shaft and the piston and transmitting torque. A lower joint: the outer diameter phi is 104mm, the inner diameter phi is 76mm, and the total length is 68 mm. And the standard external thread at the upper end is 43mm long and is used for connecting the cylinder body and a fixed torque shaft and transmitting torque.
Torque shaft: used for fixing the piston, and the lower part is connected with the reaming bit. Torque shaft: the width of the square column is 64mm, the length of the square column is 270mm, the inner diameter of the square column is 32mm, the square column is provided with a radian of phi 73mm, the top of the square column is provided with standard threads with the length of 20mm and phi 50mm, the square column is used for fixing a piston, and the lower part of the square column is connected with a reaming bit.
A reaming bit: the twist drill reams the fractured plug face and reams the hole. A reaming bit: the drill bit is a pear-shaped drill bit with the length of 175mm, the outer diameter phi of 100mm by 48mm and the inner diameter phi of 32mm, eight drill teeth with the length of 175mm and the width of 10mm are arranged outside the pear-shaped drill bit, the drill teeth are provided with cutting columns in an inserted connection mode, the reaming drill bit is connected with the torque shaft, and the twist drill bit penetrates through the inner hole. The reaming method is used for reaming after the plug surface is broken by the twist drill.
Twist drill bit: the crushing plug is used for concentrating the bit pressure to one point and improving the crushing speed through rotation. Twist drill bit: the top angle is 120 degrees, the standard drill bit with the outer diameter phi of 32mm, and the handle part is connected with the drill bit connecting rod and used for concentrating the drilling pressure to one point to crush the plug surface and improving the crushing speed through rotation.
A drill bit connecting rod: the upper part of the upper joint is used for connecting the bit pressure and the torque, and the lower part of the upper joint is used for fixing the twist drill. A drill bit connecting rod: the connecting rod with the outer diameter of 32mm, the length of 535mm and the inner diameter of 20mm is used for connecting the upper joint at the upper part to transmit bit pressure and torque, and fixing the twist drill at the lower part.
Locking the nut: for securing the drill bit link to the upper sub. Locking the nut: and the standard nut with the diameter of 34.6mm is used for fixing the drill bit connecting rod on the upper joint.
A spring: the drill pressure is effectively supplied, and the drill plugging speed is improved. A spring: the standard spring with the diameter of 70mm is used for effectively supplying bit pressure and improving the speed of drilling and plugging.
The special drilling and plugging tool is mainly used for drilling and removing the solidified cement plug in the oil-water well repairing process. The practical problems of low speed and low efficiency of drilling the cement plug are solved, and the drilling and removing of the cement plug are carried out in a 'point broken surface' mode. The drilling and plugging mode of conventional construction is changed, and the problems of large plug surface toughness and slow rule feeding are effectively solved. The operation time efficiency of the well repairing drill plug is improved.
When the plug is drilled, the pump truck provides liquid flow, the twist drill bit contacts with the plug surface firstly, the plug surface is subjected to wall breaking and drilling under the action of drilling pressure and torque, pressurization and rotation are continued, the reaming drill bit reams and plugs under the action of torque and drilling pressure along the wall breaking hole, drilled chips are carried out of a shaft through the liquid flow, and the drilling and plugging process is deepened to the depth. The drill web can be replaced according to different casing diameters to meet the requirements of casing drill plug construction of different sizes. The tool is fast in drilling and plugging speed, and simple, safe and reliable in operation. The application range is wide, and the drilling plug aging can be greatly improved.
The utility model discloses reform transform the project organization, improved and bored stopper speed. The drilling and plugging mode is improved, and the wall breaking efficiency is improved. And a drilling and plugging mode is modified, so that the drilling pressure is controllable. The tool is put into the well along with the construction pipe column, and the cement plug solidified in the shaft is drilled out.
Example 2:
referring to fig. 1 to 9, the present invention provides a technical solution: broken wall hole enlargement combined type drill bit includes:
the drill bit comprises a twist drill bit 1, wherein the upper end of the twist drill bit is a drill bit handle;
the reaming bit 2 is provided with an inner hole in the center for penetrating through the twist bit;
further comprising:
the lower end of the torque shaft is connected with the upper end of a reaming bit, and the center of the torque shaft is provided with a central hole for penetrating through a bit connecting rod;
the upper end of the torque shaft is connected with the piston mechanism, and the center of the piston mechanism is provided with a center hole for penetrating through the drill bit connecting rod;
and the lower half section of the drill connecting rod is provided with a twist drill mounting hole for mounting a drill handle, and the drill connecting rod sequentially penetrates through the torque shaft and the piston mechanism upwards.
Further, the piston mechanism includes:
the cylinder body 7 is in an axial hollow tubular shape;
the piston 6 is arranged in the inner cavity of the cylinder in a sliding and sealing manner;
and the spring 9 is arranged in the cylinder body, the lower end of the spring is connected with the upper end of the piston, and the lower end of the piston is connected with the upper end of the torque shaft.
Further, still include:
the upper joint 12, the barrel upper end is connected to the upper joint lower extreme, and the upper joint lower port inner wall sets up the perforated plate, and a plurality of eccentric axial holes that link up of axial are seted up to the perforated plate, and the perforated plate center still sets up the centre bore that is used for passing the drill bit connecting rod, and after the drill bit connecting rod passed, at drill bit connecting rod upper end mounting nut 11, the top of spring pushes up at the upper joint lower extreme.
Further, still include:
and the lower joint 5 is connected to the lower end port of the cylinder body, and the center of the lower joint is provided with a center hole for penetrating through the torque shaft.
Further, the center hole of the lower joint is a round-corner rectangular hole.
Further, the torque shaft is also in a shape of a rounded rectangle and is uniformly assembled with the central hole of the lower joint.
Further, the upper joint is fixed with the cylinder body through a pin 10.
Example 3:
referring to fig. 1 to 9, the present invention provides a technical solution: broken wall hole enlargement combined type drill bit includes:
the drill bit comprises a twist drill bit 1, wherein the upper end of the twist drill bit is a drill bit handle;
the reaming bit 2 is provided with an inner hole in the center for penetrating through the twist bit;
further comprising:
the lower end of the torque shaft is connected with the upper end of a reaming bit, and the center of the torque shaft is provided with a central hole for penetrating through a bit connecting rod;
the upper end of the torque shaft is connected with the piston mechanism, and the center of the piston mechanism is provided with a center hole for penetrating through the drill bit connecting rod;
and the lower half section of the drill connecting rod is provided with a twist drill mounting hole for mounting a drill handle, and the drill connecting rod sequentially penetrates through the torque shaft and the piston mechanism upwards.
Further, the piston mechanism includes:
the cylinder body 7 is in an axial hollow tubular shape;
the piston 6 is arranged in the inner cavity of the cylinder in a sliding and sealing manner;
and the spring 9 is arranged in the cylinder body, the lower end of the spring is connected with the upper end of the piston, and the lower end of the piston is connected with the upper end of the torque shaft.
Further, still include:
the upper joint 12, the barrel upper end is connected to the upper joint lower extreme, and the upper joint lower port inner wall sets up the perforated plate, and a plurality of eccentric axial holes that link up of axial are seted up to the perforated plate, and the perforated plate center still sets up the centre bore that is used for passing the drill bit connecting rod, and after the drill bit connecting rod passed, at drill bit connecting rod upper end mounting nut 11, the top of spring pushes up at the upper joint lower extreme.
Further, still include:
and the lower joint 5 is connected to the lower end port of the cylinder body, and the center of the lower joint is provided with a center hole for penetrating through the torque shaft.
Further, the center hole of the lower joint is a round-corner rectangular hole.
Example 4:
referring to fig. 1 to 9, the present invention provides a technical solution: broken wall hole enlargement combined type drill bit includes:
the drill bit comprises a twist drill bit 1, wherein the upper end of the twist drill bit is a drill bit handle;
the reaming bit 2 is provided with an inner hole in the center for penetrating through the twist bit;
further comprising:
the lower end of the torque shaft is connected with the upper end of a reaming bit, and the center of the torque shaft is provided with a central hole for penetrating through a bit connecting rod;
the upper end of the torque shaft is connected with the piston mechanism, and the center of the piston mechanism is provided with a center hole for penetrating through the drill bit connecting rod;
and the lower half section of the drill connecting rod is provided with a twist drill mounting hole for mounting a drill handle, and the drill connecting rod sequentially penetrates through the torque shaft and the piston mechanism upwards.
Further, the piston mechanism includes:
the cylinder body 7 is in an axial hollow tubular shape;
the piston 6 is arranged in the inner cavity of the cylinder in a sliding and sealing manner;
and the spring 9 is arranged in the cylinder body, the lower end of the spring is connected with the upper end of the piston, and the lower end of the piston is connected with the upper end of the torque shaft.
Further, still include:
the upper joint 12, the barrel upper end is connected to the upper joint lower extreme, and the upper joint lower port inner wall sets up the perforated plate, and a plurality of eccentric axial holes that link up of axial are seted up to the perforated plate, and the perforated plate center still sets up the centre bore that is used for passing the drill bit connecting rod, and after the drill bit connecting rod passed, at drill bit connecting rod upper end mounting nut 11, the top of spring pushes up at the upper joint lower extreme.
Example 5:
referring to fig. 1 to 9, the present invention provides a technical solution: broken wall hole enlargement combined type drill bit includes:
the drill bit comprises a twist drill bit 1, wherein the upper end of the twist drill bit is a drill bit handle;
the reaming bit 2 is provided with an inner hole in the center for penetrating through the twist bit;
further comprising:
the lower end of the torque shaft is connected with the upper end of a reaming bit, and the center of the torque shaft is provided with a central hole for penetrating through a bit connecting rod;
the upper end of the torque shaft is connected with the piston mechanism, and the center of the piston mechanism is provided with a center hole for penetrating through the drill bit connecting rod;
and the lower half section of the drill connecting rod is provided with a twist drill mounting hole for mounting a drill handle, and the drill connecting rod sequentially penetrates through the torque shaft and the piston mechanism upwards.
Further, the piston mechanism includes:
the cylinder body 7 is in an axial hollow tubular shape;
the piston 6 is arranged in the inner cavity of the cylinder in a sliding and sealing manner;
and the spring 9 is arranged in the cylinder body, the lower end of the spring is connected with the upper end of the piston, and the lower end of the piston is connected with the upper end of the torque shaft.
Although fig. 1 to 9 are used in all the above embodiments, it is obvious to those skilled in the art that separate drawings are not shown, as long as the parts missing in the embodiments are removed from the drawings. As will be clear to the skilled person. Of course, the embodiments with more components are only the best embodiments, and the embodiments with less components are the basic embodiments, but the basic objects of the invention can also be achieved, and all of the embodiments are within the protection scope of the invention.
The description above refers to all the various components that are not described in detail, all of which are well known in the art.
In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. 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, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", 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 simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Broken wall hole enlargement combined type drill bit includes:
the upper end of the twist drill is provided with a drill handle;
the center of the reaming bit is provided with an inner hole for penetrating through the twist drill;
it is characterized by also comprising:
the lower end of the torque shaft is connected with the upper end of the reaming bit, and the center of the torque shaft is provided with a central hole for penetrating through a bit connecting rod;
the upper end of the torque shaft is connected with the piston mechanism, and the center of the piston mechanism is provided with a center hole for penetrating through the drill bit connecting rod;
the lower half section of the drill connecting rod is provided with a twist drill mounting hole for mounting a drill handle, and the drill connecting rod sequentially penetrates through the torque shaft and the piston mechanism upwards.
2. The composite drill bit with wall breaking and diameter expanding functions as claimed in claim 1, wherein the piston mechanism comprises:
the cylinder body is in an axial hollow tubular shape;
the piston is arranged in the inner cavity of the cylinder in a sliding sealing manner;
and the spring is arranged in the cylinder body, the lower end of the spring is connected with the upper end of the piston, and the lower end of the piston is connected with the upper end of the torque shaft.
3. The composite drill bit with wall breaking and diameter expanding functions as claimed in claim 2, further comprising:
the upper joint, the barrel upper end is connected to the upper joint lower extreme, and the upper joint lower port inner wall sets up the perforated plate, and a plurality of eccentric axial holes that link up of axial are seted up to the perforated plate, and the perforated plate center still sets up the centre bore that is used for passing the drill bit connecting rod, and the back is passed to the drill bit connecting rod, at drill bit connecting rod upper end mounting nut, the top of the spring top is at the upper joint lower extreme.
4. The composite drill bit with the functions of breaking wall and expanding diameter as claimed in claim 2 or 3, further comprising:
the lower joint is connected to the lower end of the cylinder body, and the center of the lower joint is provided with a center hole used for penetrating through the torque shaft.
5. The composite drill bit with the functions of wall breaking and diameter expanding as claimed in claim 4, wherein the central hole of the lower joint is a round rectangular hole.
6. The composite drill bit with the functions of wall breaking and diameter expanding as claimed in claim 5, wherein the torque shaft is also in the shape of a rounded rectangle and is uniformly fitted with the central hole of the lower joint.
7. A wall-breaking and diameter-expanding composite drill bit as claimed in claim 3, wherein the upper joint is fixed with the cylinder body by pins.
8. The composite drill bit with the functions of wall breaking and diameter expanding as claimed in claim 2, wherein the outer wall of the piston is provided with a sealing groove, and a sealing ring is arranged in the sealing groove.
9. The composite drill bit with the functions of wall breaking and diameter expanding as claimed in claim 2 or 3, wherein eight drilling teeth with the length of 175mm and the width of 10mm are uniformly distributed on the outer wall of the reaming bit.
10. The composite drill bit with the functions of breaking walls and expanding diameter as claimed in claim 9, wherein the drill teeth are provided with cutting posts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921899717.9U CN211598525U (en) | 2019-11-05 | 2019-11-05 | Wall-breaking and diameter-expanding combined drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921899717.9U CN211598525U (en) | 2019-11-05 | 2019-11-05 | Wall-breaking and diameter-expanding combined drill bit |
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| Publication Number | Publication Date |
|---|---|
| CN211598525U true CN211598525U (en) | 2020-09-29 |
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| CN201921899717.9U Active CN211598525U (en) | 2019-11-05 | 2019-11-05 | Wall-breaking and diameter-expanding combined drill bit |
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| CN (1) | CN211598525U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846972A (en) * | 2021-10-26 | 2021-12-28 | 国能神东煤炭集团有限责任公司 | Hole expanding device and hole expanding method |
-
2019
- 2019-11-05 CN CN201921899717.9U patent/CN211598525U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846972A (en) * | 2021-10-26 | 2021-12-28 | 国能神东煤炭集团有限责任公司 | Hole expanding device and hole expanding method |
| CN113846972B (en) * | 2021-10-26 | 2023-08-11 | 国能神东煤炭集团有限责任公司 | Reaming device and reaming method |
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