CN209083231U - Drill bit protective device - Google Patents
Drill bit protective device Download PDFInfo
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- CN209083231U CN209083231U CN201821525124.1U CN201821525124U CN209083231U CN 209083231 U CN209083231 U CN 209083231U CN 201821525124 U CN201821525124 U CN 201821525124U CN 209083231 U CN209083231 U CN 209083231U
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Abstract
The utility model relates to drill bit protective device technical fields, are a kind of drill bit protective devices；It includes lower connecting mandrel, upper connection outer barrel assembly and elastic parts；It is fixedly installed between the upper outside of lower connecting mandrel and the lower inside of upper connection outer barrel assembly and can be reversed and move up by card resistance power in lower connecting mandrel, and the restorable elastic parts after card resistance power disappearance；The utility model reasonable and compact in structure, it is easy to use；When drill bit card resistance, drill collar continues to output torque and acts on to elastic rod, elastic rod is moved up around the torsion of lower connecting mandrel, drives lower connecting mandrel and drill bit to move back brill upwards, while drill bit gradually decreases the depth of tooth penetration on card resistance stratum, the torsion of elastic parts can also generate additional torque to increase the cutting force of drill bit, the case where enabling drill bit that card resistance to be overcome to realize formation cut, drill bit is avoided to collapse tooth, bouncing of drilling tool and drill bit premature deterioration, it keeps drill bit to stablize cutting, improves rate of penetration.
Description
Technical field
The utility model relates to drill bit protective device technical fields, are a kind of drill bit protective devices.
Background technique
In drilling process, since stratum is heterogeneous, the depth on drill bit wedging stratum constantly changes, when bit cutting
By card resistance, drill bit is caused to collapse tooth, bouncing of drilling tool, cause drill bit premature deterioration, shorten bit life, reduces rate of penetration.
Summary of the invention
The utility model provides a kind of drill bit protective device, overcomes the defects of the prior art, and can effectively solve
Certainly by card resistance when bit cutting, the problem of causing bit damage.
The technical solution of the utility model is realized by following measures: a kind of drill bit protective device, including lower company
Connect mandrel, upper connection outer barrel assembly and elastic parts；In the lower part of the upper outside of lower connecting mandrel and upper connection outer barrel assembly
Being fixedly installed between side can be reversed and move up by card resistance power in lower connecting mandrel, and restore to the original state after card resistance power disappearance
Elastic parts.
Here is the further optimization and/or improvements to above-mentioned utility model technical solution:
Above-mentioned elastic parts includes elastic rod, lower limit fastener and upper limit fastener；Elastic rod is by elastic material
Manufactured elastic rod is externally provided with elastic component mounting ring in the lower part of lower connecting mandrel, is sleeved on bullet on the downside of upper connection outer barrel assembly
Outside property part mounting ring, ring cavity is formed between the upper connection outer barrel assembly and lower connecting mandrel on the upside of elastic component mounting ring, in ring
It is intracavitary be fixedly installed at least two it is circumferential curl up outside lower connecting mandrel and the identical elastic rod of rotation direction, in elastic component mounting ring
Upper periphery is fixed with vertical lower plunger to limit lower bayonet slot corresponding with elastic rod lower end, the lower end of elastic rod is distributed with,
Lower plunger is fixedly mounted in corresponding limit lower bayonet slot by lower limit fastener；Outside the upper connection of the upside of ring cavity
It is fixedly installed with limit sleeve in cylinder assembly, limit sleeve is sleeved on lower connecting mandrel；It is circumferentially distributed in limit sleeve to have and elasticity
Card slot in the corresponding limit in bar upper end, the upper end of elastic rod are fixed with vertical upper plunger, and upper plunger passes through upper limit fastener
It is fixedly mounted in corresponding limit in card slot.
Above-mentioned upper connection outer barrel assembly includes outer cylinder 7, crossover sub 8 and top connection 9；It is connect in the upside of outer cylinder 7 with conversion
It is fixedly installed togather outside first 8 downside；It is fixedly installed togather outside the upside of crossover sub 8 in the downside of top connection 9；Under
Connecting mandrel is three up-narrow and down-wide rank axis, is single order shaft part 10, second order shaft part 11 and three rank shaft parts 12 respectively from top to bottom；Bullet
Property part mounting ring 2 be located at outside the lower part of second order shaft part 11；8 inner end sealing shroud of crossover sub is outside the top of second order shaft part 11；
8 lower end of crossover sub forms ring cavity 3, ring cavity 3 between outer cylinder 7,11 middle part of second order shaft part, 2 upper end of elastic component mounting ring respectively
Limit sleeve mounting groove is equipped in the outer cylinder 7 on top, limit sleeve 5 is seated in limit sleeve mounting groove, and is fixedly connected with crossover sub 8
Together；It is equipped with inner seal ring platform 13 at the middle part of top connection 9,13 sealing shroud of inner seal ring platform is interior outside single order shaft part 10
It seals and is equipped with spring mounting groove 14 in 13 lower end of land to 9 lower part of top connection between 11 upper end of second order shaft part, installed in spring
Thrust elastic component 15 is installed, 15 upper end of thrust elastic component is withstood on inner seal ring platform 13,15 lower end of thrust elastic component in slot 14
It is against the upper end of second order shaft part 11 and crossover sub 8.
Suspension joint is fixedly installed with outside the single order shaft part of above-mentioned inner seal ring platform upper end；Or/and in the upside of top connection
Equipped with taper thread wide at the top and narrow at the bottom；Up-narrow and down-wide taper thread is equipped in the downside of three rank shaft parts.
Limit set upper side in above-mentioned limit on the outside of card slot is equipped at least two limit sleeve calvus being circumferentially spaced apart,
The socket of opening upwards is formed between adjacent limit sleeve calvus；The lower end of crossover sub corresponding with socket is equipped with connector calvus,
It is mutually twisted in connector calvus insertion socket and with limit sleeve calvus；Horizontal corresponding ring is externally provided in each limit sleeve calvus
Mouthful, elastic opening retaining ring that can be fixed by connector calvus and the inside banding of limit sleeve calvus, elasticity are fixedly installed in collar extension
Split washer outer ring surface is against on outer cylinder.
Above-mentioned upper limit fastener is upper fastening nut；Upper limit chuck, the upper limit are equipped in the lower part for limiting upper card slot
It is threadably secured outside the upper plunger of position chuck upper end and fastening nut is installed, upper fastening nut lower end is against upper limit chuck
Above and by upper plunger axial limiting limiting in upper card slot.
It is threadably secured outside the upper plunger of above-mentioned upper fastening nut upper end and stop nut is installed.
Above-mentioned lower limit fastener is lower fastening nut, is equipped with lower limit on the second order shaft part in limit lower bayonet slot top
Chuck is set with interstage sleeve on the lower plunger of lower limit chuck lower end, is threadably secured and is equipped with outside the lower plunger of interstage sleeve lower end
Lower fastening nut, lower fastening nut upper end are withstood on interstage sleeve and by lower plunger axial limiting in limit lower bayonet slot.
Above-mentioned be threadably secured outside the lower plunger of lower fastening nut lower end is equipped with lower stop nut.
It is equipped with screw thread on the upside of above-mentioned outer cylinder, and is fixedly installed togather by screw thread and crossover sub；Or/and conversion
It is externally provided with screw thread on the upside of connector, and is fixedly installed togather by screw thread and top connection；Or/and in the upside of single order shaft part
It is externally provided with screw thread, and is fixedly installed togather by screw thread and the suspension joint.
Sealing ring is fixedly installed between above-mentioned inner seal ring platform and single order shaft part；Crossover sub and second order on the upside of ring cavity
At least one of sealing ring is fixedly installed between shaft part；Sealing is fixedly installed between crossover sub and outer cylinder on the upside of ring cavity
Circle.
The utility model reasonable and compact in structure, it is easy to use；When drill bit card resistance, drill collar continue to output torque and act on to
Elastic rod, elastic rod are moved up around the torsion of lower connecting mandrel, drive lower connecting mandrel and drill bit to move back brill upwards, drill bit is to card resistance stratum
Depth of tooth penetration while gradually decrease, the torsion of elastic parts can also generate additional torque to increase the cutting force of drill bit, make
The case where drill bit can overcome card resistance to realize formation cut, and drill bit is avoided to collapse tooth, bouncing of drilling tool and drill bit premature deterioration keeps boring
Head stablizes cutting, improves rate of penetration.
Detailed description of the invention
Attached drawing 1 is that structural schematic diagram cuts open in the half-sectional office of main view on the best embodiment of the utility model top.
Attached drawing 2 is enlarged structure schematic diagram at I in attached drawing 8.
Attached drawing 3 is enlarged structure schematic diagram at II in attached drawing 8.
Attached drawing 4 be in attached drawing 8 A-A to section view enlarged structure schematic diagram.
Attached drawing 5 is B-B direction section view enlarged structure schematic diagram in attached drawing 8.
Attached drawing 6 be in attached drawing 8 C-C to section view enlarged structure schematic diagram.
Attached drawing 7 be in attached drawing 8 D-D to section view enlarged structure schematic diagram.
Attached drawing 8 is that structural schematic diagram cuts open in the half-sectional office of main view of the best embodiment of the utility model lower part.
Coding in attached drawing is respectively as follows: 1 for elastic rod, and 2 be elastic component mounting ring, and 3 be ring cavity, and 4 be lower plunger, and 5 are limited
Position set, 6 be upper plunger, and 7 be outer cylinder, and 8 be crossover sub, and 9 be top connection, and 10 be single order shaft part, and 11 be second order shaft part, and 12 be three
Rank shaft part, 13 be inner seal ring platform, and 14 be spring mounting groove, and 15 be thrust elastic component, and 16 be suspension joint, and 17 be connector pawl
Piece, 18 be limit collet piece, and 19 be elastic opening retaining ring, and 20 be upper fastening nut, and 21 be upper limit chuck, and 22 be upper locking spiral shell
Mother, 23 be lower fastening nut, and 24 be lower stop nut, and 25 be sealing ring, and 26 be interstage sleeve, and 27 is limit upper card slot, and 28 be limit
Lower bayonet slot, 29 be lower limit chuck.
Specific embodiment
The utility model is not limited by following embodiments, can technical solution according to the present utility model and actual conditions
Determine specific embodiment.
In the present invention, for ease of description, the description of the relative positional relationship of each component is according to specification
The Butut mode of attached drawing 1 is described, such as: the positional relationship of upper and lower, left and right is the Butut according to Figure of description 1
Direction determines.
The utility model is further described below with reference to examples and drawings:
As shown in attached drawing 1,8, the drill bit protective device includes lower connecting mandrel, upper connection outer barrel assembly and elastic parts；
The upper outside of lower connecting mandrel and it is upper connection outer barrel assembly lower inside between be fixedly installed with can lower connecting mandrel by
It reverses and moves up to card resistance power, and the restorable elastic parts after card resistance power disappearance.
Wherein, elastic parts is elasticity of torsion component；The minimum deformation values of elastic parts are less than or equal to the maximum of drill bit
Cutting force, and it is greater than the minimum cutting force of drill bit；
In drilling process, this drill bit protective device is mounted between drill collar and drill bit；Upper connection outer barrel assembly upper end and brill
It quickly installs, lower connecting mandrel lower end and drill bit are installed；Drill collar exports turning moment, passes sequentially through connection outer barrel assembly, elasticity
Component and lower connecting mandrel drive bit；When torque-on-bit is more than the cutting value (the minimum deformation values of elastic parts) of setting
When, that is, card resistance is met with, drill collar continues to output torque and acts on to elastic parts at this time, and elastic parts torsion moves up, connects under drive
It connects mandrel and drill bit and moves back brill upwards, as drill bit gradually moves up, drill bit gradually decreases the depth of tooth penetration on card resistance stratum, well
The card resistance power on lower card resistance stratum can also gradually decrease；At the same time, the torsion of elastic parts can also generate additional torque, further
The cutting force for increasing drill bit, when torque-on-bit is less than setting cutting value, i.e., within the scope of specified cutting, drill bit can at this time
It is fully able to that card resistance is overcome to realize formation cut, to solve the problems, such as drill bit card resistance, avoids drill bit from collapsing tooth, bouncing of drilling tool, and bore
The case where head premature deterioration, drill bit is kept to stablize cutting, improves rate of penetration.
Above-mentioned drill bit protective device can be made further optimization and/or improvements according to actual needs:
As shown in attached drawing 1,2,4,5,6,7,8, elastic parts includes elastic rod 1, lower limit fastener and upper limit fastening
Part；Elastic rod 1 is the elastic rod made of elastic material, is externally provided with elastic component mounting ring 2, upper company in the lower part of lower connecting mandrel
It connects and is sleeved on outside elastic component mounting ring 2 on the downside of outer barrel assembly, upper connection outer barrel assembly and lower company in 2 upside of elastic component mounting ring
Formation ring cavity 3 is connect between mandrel, at least two are fixedly installed in ring cavity 3 and circumferential is curled up outside lower connecting mandrel and rotation direction phase
With elastic rod 1, in 2 upper periphery of elastic component mounting ring to limit lower bayonet slot 28 corresponding with 1 lower end of elastic rod, bullet is distributed with
The lower end of property bar 1 is fixed with vertical lower plunger 4, and lower plunger 4 is fixedly mounted on corresponding limit by lower limit fastener
In the lower bayonet slot 28 of position；It is fixedly installed with limit sleeve 5 in the upper connection outer barrel assembly of the upside of ring cavity 3, limit sleeve 5 is sleeved on down
On connecting mandrel；It is circumferentially distributed in limit sleeve 5 to have card slot 27 in limit corresponding with 1 upper end of elastic rod, the upper end of elastic rod 1
It is fixed with vertical upper plunger 6, upper plunger 6 is fixedly mounted on card slot 27 in corresponding limit by upper limit fastener
It is interior.Wherein, the formation of elastic rod 1 outside lower connecting mandrel is circumferentially curled up to be able to bear twisting resistance and be similar to " pawl spring " structure,
In the case where upper connection outer barrel assembly is by turning moment and lower connecting mandrel card resistance, upper connection outer barrel assembly is to elastic rod 1
Apply turning moment, by turning moment circumferential torsional deflection is occurred for elastic rod 1, and lower connecting mandrel rotation is driven to move up, real
Now move back brill；The swing angle and quantity of elastic rod 1, according under actual condition maximum cutting force and minimum cutting force determine.
As shown in attached drawing 1,2,4,5,8, upper connection outer barrel assembly includes outer cylinder 7, crossover sub 8 and top connection 9；Outer cylinder 7
Upside in be fixedly installed togather outside the downside of crossover sub 8；Outside the upside of crossover sub 8 and in the downside of top connection 9
It is fixedly installed togather；Lower connecting mandrel is three up-narrow and down-wide rank axis, is single order shaft part 10, second order shaft part respectively from top to bottom
11 and three rank shaft parts 12；Elastic component mounting ring 2 is located at outside the lower part of second order shaft part 11；8 inner end sealing shroud of crossover sub is mounted in two
Outside the top of rank shaft part 11；8 lower end of crossover sub respectively with outer cylinder 7, the middle part of second order shaft part 11,2 upper end of elastic component mounting ring it
Between form ring cavity 3, be equipped with limit sleeve mounting groove in the outer cylinder 7 on 3 top of ring cavity, limit sleeve 5 is seated in limit sleeve mounting groove, and with
Crossover sub 8 is fixed together；Inner seal ring platform 13, the sealing suit of inner seal ring platform 13 are equipped at the middle part of top connection 9
Spring is equipped with outside single order shaft part 10, in 13 lower end of inner seal ring platform to 9 lower part of top connection between 11 upper end of second order shaft part to pacify
Tankage 14 is equipped with thrust elastic component 15 in spring mounting groove 14, and 15 upper end of thrust elastic component is withstood on inner seal ring platform 13,
15 lower end of thrust elastic component is against the upper end of second order shaft part 11 and crossover sub 8.Wherein, crossover sub 8 is for connecting top connection 9
With outer cylinder 7；Top connection 9 is for connecting drill collar；Increased thrust elastic component 15 plays the role of the reset of assistant spring component；Work as brill
While head is moved up with lower connecting mandrel by the effect rotation of elastic parts, thrust elastic component is compressed in the upper end of lower connecting mandrel
15；Due to make elastic parts twist deformation drill collar driving torque be it is very big, so even there are thrust elastic components 15
Resistance also can be neglected；And after card resistance disappears, drill collar driving torque acts on bit cutting, and thrust elastic component 15
Reset force then push down on lower connecting mandrel and reset, to be further ensured that elastic parts can reset completely.
For convenience of lifting, as shown in attached drawing 1,8, it is fixedly installed with outside the single order shaft part 10 of 13 upper end of inner seal ring platform outstanding
Hanging joint 16；Or/and to be connect respectively with drill collar and drill bit convenient for this drill bit protective device, as shown in Fig. 1, top connection 9
Taper thread wide at the top and narrow at the bottom is equipped in upside；Up-narrow and down-wide taper thread is equipped in the downside of three rank shaft parts 12.
As shown in attached drawing 1,2,3, at least two are equipped in 5 upper end of limit sleeve for limiting upper 27 outside of card slot and is circumferentially spaced
The limit sleeve calvus 18 of distribution forms the socket of opening upwards between adjacent limit sleeve calvus 18；Conversion corresponding with socket connects
First 8 lower end is equipped with connector calvus 17, and connector calvus 17 is inserted into socket and is mutually twisted with limit sleeve calvus 18；In each limit
Position set calvus 18 is externally provided with horizontal corresponding collar extension, and being fixedly installed in collar extension can be by connector calvus 17 and limit sleeve calvus 18
The fixed elastic opening retaining ring 19 of inside banding, 19 outer ring surface of elastic opening retaining ring are against on outer cylinder 7.Wherein, elastic opening is kept off
While circle 19 holds the connector calvus 17 being mutually twisted and limit sleeve calvus 18 tightly, moreover it is possible to make crossover sub 8,5 and of limit sleeve
The relationship of axial limiting is formed between 7 three of outer cylinder, connection structure is simple, without the tightening member of other auxiliary, is not take up and appoints
What extra space, keeps drill bit protective device structure more compact.
To be easy to disassemble, as shown in attached drawing 1,2,4,5, upper limit fastener is upper fastening nut 20；Limiting upper card slot
It is equipped with upper limit chuck 21 in 27 lower part, is threadably secured outside the upper plunger 6 of 21 upper end of upper limit chuck and make-up is installed
Gu nut 20, upper 20 lower end of fastening nut is against in upper limit chuck 21 and 6 axial limiting of upper plunger is being limited upper card slot 27
It is interior.
As shown in attached drawing 1,2,8, be threadably secured outside the upper plunger 6 of upper 20 upper end of fastening nut be equipped with it is upper locking
Nut 22.In this way, upper stop nut 22 forms the structure of double nut with upper fastening nut 20, the effect of locking fastening is further increased
Fruit.
To be easy to disassemble, as shown in attached drawing 1,3,6,7,8, lower limit fastener is lower fastening nut 23, is blocked under limit
Second order shaft part 11 in 28 top of slot is equipped with lower limit chuck 29, is set with gear on the lower plunger 4 of 29 lower end of lower limit chuck
Set 26, the lower plunger 4 of 26 lower end of interstage sleeve is threadably secured outside is equipped with lower fastening nut 23, and lower 23 upper end of fastening nut is withstood on
On interstage sleeve 26 and by 4 axial limiting of lower plunger in limit lower bayonet slot 28.
As shown in attached drawing 1,3,8, it is threadably secured outside the lower plunger 4 of lower 23 lower end of fastening nut locking under being equipped with
Nut 24.In this way, lower stop nut 24 forms the structure of double nut with lower fastening nut 23, the effect of locking fastening is further increased
Fruit.
To be easy to disassemble, as shown in attached drawing 1,8, screw thread is equipped in 7 upside of outer cylinder, and solid by screw thread and crossover sub 8
Dingan County is fitted together；Or/and the upside of crossover sub 8 is externally provided with screw thread, and is fixedly mounted on one by screw thread and top connection 9
It rises；Or/and it is externally provided with screw thread in the upside of single order shaft part 10, and be fixedly mounted on one by screw thread and the suspension joint 16
It rises.
It is fixedly installed between inner seal ring platform 13 and single order shaft part 10 close as shown in attached drawing 1,8 to increase sealing effect
Seal 25；At least sealing ring 25 together are fixedly installed between the crossover sub 8 and second order shaft part 11 of the upside of ring cavity 3；On ring cavity 3
Sealing ring 25 is fixedly installed between the crossover sub 8 and outer cylinder 7 of side.
The above technical characteristic constitutes the most preferred embodiment of the utility model, with stronger adaptability and best implementation
Effect can increase and decrease non-essential technical characteristic, according to actual needs to meet the needs of different situations.
Claims (11)
1. a kind of drill bit protective device, it is characterised in that including lower connecting mandrel, upper connection outer barrel assembly and elastic parts；Lower company
Connect between the upper outside of mandrel and the lower inside of upper connection outer barrel assembly that be fixedly installed with can be in lower connecting mandrel card
Resistance and reverse and move up, and the card resistance power disappearance after restorable elastic parts.
2. drill bit protective device according to claim 1, it is characterised in that elastic parts includes elastic rod, lower limit fastening
Part and upper limit fastener；Elastic rod is the elastic rod made of elastic material, flexible in the lower part peripheral hardware of lower connecting mandrel
Part mounting ring, upper connection outer barrel assembly downside is sleeved on outside elastic component mounting ring, outside the upper connection on the upside of elastic component mounting ring
Ring cavity is formed between cylinder assembly and lower connecting mandrel, at least two are fixedly installed in ring cavity and is circumferentially curled up in lower connecting mandrel
The outer and identical elastic rod of rotation direction, blocks in elastic component mounting ring upper periphery under being distributed with limit corresponding with elastic rod lower end
Slot, the lower end of elastic rod are fixed with vertical lower plunger, and lower plunger is fixedly mounted on corresponding by lower limit fastener
It limits in lower bayonet slot；It is fixedly installed with limit sleeve in the upper connection outer barrel assembly of the upside of ring cavity, limit sleeve is sleeved on lower company
It connects on mandrel；Circumferentially distributed in limit sleeve to have card slot in limit corresponding with elastic rod upper end, the upper end of elastic rod is fixed with
Vertical upper plunger, upper plunger are fixedly mounted in corresponding limit in card slot by upper limit fastener.
3. drill bit protective device according to claim 2, it is characterised in that above connect outer barrel assembly include outer cylinder, conversion connect
Head and top connection；It is fixedly installed togather in the upside of outer cylinder with outside the downside of crossover sub；Outside the upside of crossover sub with it is upper
It is fixedly installed togather in the downside of connector；Lower connecting mandrel is three up-narrow and down-wide rank axis, is single order axis respectively from top to bottom
Section, second order shaft part and three rank shaft parts；Elastic component mounting ring is located at outside the lower part of second order shaft part；Crossover sub inner end sealing shroud is mounted in
Outside the top of second order shaft part；Crossover sub lower end is formed between upper end with outer cylinder, second order shaft part middle part, elastic component mounting ring respectively
Ring cavity, the outer cylinder on ring cavity top is interior to be equipped with limit sleeve mounting groove, and limit sleeve is seated in limit sleeve mounting groove, and solid with crossover sub
Surely it links together；It is equipped with inner seal ring platform at the middle part of top connection, inner seal ring platform sealing shroud is interior close outside single order shaft part
It is equipped with spring mounting groove in seal ring platform lower end to the top connection lower part between second order shaft part upper end, is equipped in spring mounting groove
Thrust elastic component, thrust elastic component upper end are withstood on inner seal ring platform, and thrust elastic component lower end is against second order shaft part and conversion connects
The upper end of head.
4. drill bit protective device according to claim 3, it is characterised in that solid outside the single order shaft part of inner seal ring platform upper end
Dingan County is equipped with suspension joint；Or/and taper thread wide at the top and narrow at the bottom is equipped in the upside of top connection；It is set in the downside of three rank shaft parts
There is up-narrow and down-wide taper thread.
5. drill bit protective device according to claim 3 or 4, it is characterised in that the limit set upper side in limit on the outside of card slot
The limit sleeve calvus being circumferentially spaced apart equipped at least two forms the socket of opening upwards between adjacent limit sleeve calvus；
The lower end of crossover sub corresponding with socket is equipped with connector calvus, and connector calvus insertion socket is interior and mutually stings with limit sleeve calvus
It closes；It is externally provided with horizontal corresponding collar extension in each limit sleeve calvus, being fixedly installed in collar extension can be by connector calvus and limit
The fixed elastic opening retaining ring of the inside banding of calvus is covered, elastic opening retaining ring outer ring surface is against on outer cylinder.
6. drill bit protective device according to claim 4, it is characterised in that be equipped with screw thread on the upside of outer cylinder, and pass through screw thread
It is fixedly installed togather with crossover sub；Or/and screw thread is externally provided on the upside of crossover sub, and solid by screw thread and top connection
Dingan County is fitted together；Or/and screw thread is externally provided on the upside of single order shaft part, and pacify by the way that screw thread and the suspension joint are fixed
It is fitted together.
7. according to drill bit protective device described in claim 3 or 4 or 6, it is characterised in that inner seal ring platform and single order shaft part it
Between be fixedly installed with sealing ring；At least sealing ring together is fixedly installed between crossover sub on the upside of ring cavity and second order shaft part；
Sealing ring is fixedly installed between crossover sub and outer cylinder on the upside of ring cavity.
8. drill bit protective device according to claim 5, it is characterised in that fixed between inner seal ring platform and single order shaft part
Sealing ring is installed；At least sealing ring together is fixedly installed between crossover sub on the upside of ring cavity and second order shaft part；On ring cavity
Sealing ring is fixedly installed between the crossover sub and outer cylinder of side.
9. according to drill bit protective device described in claim 3 or 4 or 6 or 8, it is characterised in that upper limit fastener is upper fastening
Nut；It is equipped with upper limit chuck in the lower part for limiting upper card slot, is threadably secured outside the upper plunger of upper limit chuck upper end
Fastening nut is installed, upper fastening nut lower end is against in upper limit chuck and upper plunger axial limiting is being limited upper card slot
It is interior, it is threadably secured outside the upper plunger of upper fastening nut upper end and stop nut is installed；Or/and lower limit fastener is
Lower fastening nut is equipped with lower limit chuck, the underthrust of lower limit chuck lower end on the second order shaft part in limit lower bayonet slot top
It is set with interstage sleeve on bar, is threadably secured outside the lower plunger of interstage sleeve lower end and lower fastening nut is installed, lower fastening nut upper end
It withstands on interstage sleeve and by lower plunger axial limiting in limit lower bayonet slot, it is solid by screw thread outside the lower plunger of lower fastening nut lower end
Dingan County is equipped with lower stop nut.
10. drill bit protective device according to claim 5, it is characterised in that upper limit fastener is upper fastening nut；?
Upper limit chuck is equipped in limit in the lower part of card slot, is threadably secured and is equipped with outside the upper plunger of upper limit chuck upper end
Fastening nut, upper fastening nut lower end are against in upper limit chuck and are limiting upper plunger axial limiting in upper card slot, tighten
Gu being threadably secured outside the upper plunger of nut upper end and being equipped with stop nut；Or/and lower limit fastener is lower fastening spiral shell
Mother is equipped with lower limit chuck on the second order shaft part in limit lower bayonet slot top, is set on the lower plunger of lower limit chuck lower end
There is interstage sleeve, is threadably secured outside the lower plunger of interstage sleeve lower end and lower fastening nut is installed, lower fastening nut upper end withstands on interstage sleeve
Above and by lower plunger axial limiting in limit lower bayonet slot, it is threadably secured and is equipped with outside the lower plunger of lower fastening nut lower end
Lower stop nut.
11. drill bit protective device according to claim 7, it is characterised in that upper limit fastener is upper fastening nut；?
Upper limit chuck is equipped in limit in the lower part of card slot, is threadably secured and is equipped with outside the upper plunger of upper limit chuck upper end
Fastening nut, upper fastening nut lower end are against in upper limit chuck and are limiting upper plunger axial limiting in upper card slot, tighten
Gu being threadably secured outside the upper plunger of nut upper end and being equipped with stop nut；Or/and lower limit fastener is lower fastening spiral shell
Mother is equipped with lower limit chuck on the second order shaft part in limit lower bayonet slot top, is set on the lower plunger of lower limit chuck lower end
There is interstage sleeve, is threadably secured outside the lower plunger of interstage sleeve lower end and lower fastening nut is installed, lower fastening nut upper end withstands on interstage sleeve
Above and by lower plunger axial limiting in limit lower bayonet slot, it is threadably secured and is equipped with outside the lower plunger of lower fastening nut lower end
Lower stop nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821525124.1U CN209083231U (en) | 2018-09-18 | 2018-09-18 | Drill bit protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821525124.1U CN209083231U (en) | 2018-09-18 | 2018-09-18 | Drill bit protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209083231U true CN209083231U (en) | 2019-07-09 |
Family
ID=67116929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821525124.1U Active CN209083231U (en) | 2018-09-18 | 2018-09-18 | Drill bit protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209083231U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868657A (en) * | 2018-09-18 | 2018-11-23 | 中国石油集团西部钻探工程有限公司 | Drill bit protective device |
-
2018
- 2018-09-18 CN CN201821525124.1U patent/CN209083231U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868657A (en) * | 2018-09-18 | 2018-11-23 | 中国石油集团西部钻探工程有限公司 | Drill bit protective device |
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Effective date of registration: 20201109 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 834000 Drilling Engineering Research Institute, No. 98 Youyi Road, Karamay District, Karamay City, Xinjiang Uygur Autonomous Region Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |
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