CN206477792U - Drive casing appliances in a kind of screw drive fully mechanical top - Google Patents
Drive casing appliances in a kind of screw drive fully mechanical top Download PDFInfo
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- CN206477792U CN206477792U CN201720161609.6U CN201720161609U CN206477792U CN 206477792 U CN206477792 U CN 206477792U CN 201720161609 U CN201720161609 U CN 201720161609U CN 206477792 U CN206477792 U CN 206477792U
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Abstract
Casing appliances is driven on a kind of screw drive fully mechanical top, and upper mandrel threaded upper ends connect top driving device, and upper mandrel lower end spline is connected with threaded drive systems；Threaded drive systems lower end of the bolt is connected with power-transmission system；Power-transmission system lower end is connected with slip system；Slip system lower end of the bolt is connected with pilot seal system；Slip system upper end is provided with spring system.During work：The utility model uses screw-driven principle, and the rotary motion of top driving device is converted to the axial driving force of slips, makes slips along wedge surface distending, and then realize the purpose of slips stretching internal surface of sleeve pipe.The utility model drives slips, no hydraulic power source, thus more environmentally friendly, safety using fully mechanical structure；There are transverse direction staggeredly and the slip insert of ring on slips, the ability that moment of torsion is driven on instrument transmission top can be increased；Meanwhile, using this instrument can also revoling tube, handling sleeve pipe, circulating mud at any time, so as to improve casing job efficiency and security, reduce drilling well integrated cost.
Description
Technical field
The utility model is related to petroleum gas well cementation equipment technology field, more particularly to a kind of screw drive fully mechanical
Drive casing appliances in top.
Background technology
The purpose of casing job is to insulate stratum, Reinforcing Shaft, prevents oil and gas leakage and set up gas channel etc., is
An extremely important link in oil and gas well drilling operation process.Casing appliances is the key for completing casing job
Property equipment, conventional setting of casing equipment mainly includes：Wellhead slip for grip sleeve, the hydraulic pressure sleeve pipe for sleeve pipe spinner
The instruments such as pincers, the open grouting device for discontinuously irrigating mud, casing elevator for lifting sleeve pipe.
There are the following problems for above-mentioned conventional setting of casing equipment：(1) casing tong spinner is utilized, the upper twist buckle of casing threads is not away from
Easily accurate control；(2) mud is irrigated using interrupted provisions for grouting, it is impossible to circulating mud in time as needed, especially in sleeve pipe
When tripping in is hampered, it is necessary to reconnect kelly bar and set up mud circulation, remove desilting, have impact on tube efficiency of trapping；(3) set is utilized
The sleeve pipe that pipe elevator is lifted in sleeve pipe, well can not rotate；(4) also there is complex operation, operating efficiency in conventional setting of casing equipment
It is low, the shortcomings of security reliability is not high.
To solve the above problems, have developed top both at home and abroad drives casing pipe running device, the form of driving force is not according to suffered by slips
Together, can be by the tools sort：Hydraulic drive type and mechanically driver type.China Patent No.：CN201420409069.5,
CN201120557017.9, CN200920105896.4 disclose hydraulic drive type casing appliances；China Patent No.：
CN201520506694.6, CN201510410640.4, CN201510312492.2 disclose mechanically driver type top and drive setting of casing
Instrument.However, the hydraulic oil of above-mentioned fluid pressure type casing appliances easily reveals pollution environment, and hydraulic system is by external environment
Influence it is larger；And there is complicated shortcoming in above-mentioned mechanical casing appliances, in addition, slips transmission moment of torsion scope compared with
It is small, it is impossible to adapt to a variety of sleeve rotatings, on sleeve pipe the operating mode such as button use.
Utility model content
In order to overcome the disadvantages mentioned above of existing setting of casing equipment, the purpose of this utility model：There is provided a kind of screw drive complete
Casing appliances is driven on mechanical top, and the extra power source without providing is only complete with regard to top can be made to drive casing appliances with top driving device
Into operations such as revoling tube, handling sleeve pipe, perfusion mud, circulating muds, and slip system can effectively transmit the moment of torsion that top is driven.
In order to achieve the above object, the technical solution of the utility model is realized in：
Drive casing appliances, including the transmission of upper mandrel 1, threaded drive systems 2, power in a kind of screw drive fully mechanical top
System 3, slip system 4, pilot seal system 5, spring system 6, it is characterized in that：The upper end outer surface of upper mandrel 1 is provided with outer
Screw thread, external screw thread drives to be formed with top and is threadedly coupled；The lower end inner surface setting of upper mandrel 1 has internal thread, internal thread and spring system
System 6 forms threaded connection；Lower mandrel 40 is hung with spring system 6；The upside of lower mandrel 40 is cased with power-transmission system 3；It is dynamic
Bolt connection has threaded drive systems 2 on the upside of the system of power delivery system 3；The downside of power-transmission system 3 is equipped with slip system 4；Card
The lower end of tile system 4 is threaded with pilot seal system 5；
The upper end outer surface of the upper mandrel 1 is provided with taper thread 11, and taper thread 11 is threadedly coupled with top driving device formation；
The center outer surface of upper mandrel 1 is provided with external splines 12, and external splines 12 is engaged to form spline company with the spline of inner barrel 24
Connect；The lower end inner surface setting of upper mandrel 1 has internal thread, and internal thread is threadedly coupled with the formation of lower tooth block 23；
The upper mandrel 1 and threaded drive systems 2 formation spline be connecteds, the threaded drive systems 2 including inner barrel 24,
Small bearing 25, small bearing (ball) cover 26, outer cylinder body 27；The outer surface of inner barrel 24 is in ladder shaft-like, and the big axle outer surface of multi-diameter shaft is set
External screw thread is equipped with, external screw thread is used to connect outer cylinder body 27；The small axial end of multi-diameter shaft is threaded hole, and screwed hole is used to connect small
Bearing (ball) cover 26；The inner surface setting of inner barrel 24, which has on the upside of step, step, is provided with spline, spline and upper mandrel 1
External splines 12 cooperate transmission rotary motion；Small bearing 25 is installed in step lower opening, and step is used to position small bearing 25,
Small bearing 25 is compressed by small bearing (ball) cover 26；
The inner surface setting of outer cylinder body 27, which has, is provided with internal thread, internal thread and inner barrel in the circular hole on the upside of step, step
24 form threaded connection；Big bearing 31 is installed in step lower opening, and step is used to position big bearing 31；Hole end surface is set under step
There is screwed hole, bolt is connected with big bearing (ball) cover 32 through screwed hole；
The power-transmission system 3 includes big bearing 31, big bearing (ball) cover 32, slip spider 33, big round nut 34；Slip spider
33 inner surfaces are cased with lower mandrel 40, and the outer surface of slip spider 33 is stepped；The downside of slip spider 33 is provided with the oblique T-slot of opening,
Slips 41 is installed in oblique T-slot；Step 35 is provided with the upside of oblique T-slot, the upside of step 35 is provided with external screw thread 36, outer spiral shell
Big round nut 34 is connected with line 36；Big bearing 31 is installed between step 35 and big round nut 34；Big bearing 31 is by big bearing
End cap 32, outer cylinder body 27 are positioned, fastened；Power-transmission system 3 can be rotated relative to lower mandrel 40；
The slip system 4 includes lower mandrel 40, slips 41；The top outer surface of lower mandrel 40 is provided with external screw thread,
External screw thread is threadedly coupled with the formation of upper tooth block 20；It is provided with the downside of external screw thread outside multi-diameter shaft, multi-diameter shaft and spring system 6 is installed；
The lower side external surface of lower mandrel 40 sets outer wedge surface, and the inside bottom surface of slips 41 is provided with interior wedge surface；The interior wedge of slips 41
Face is installed in the outer wedge surface of lower mandrel 40；Wedge surface of the slips 41 along lower mandrel 40 can radial direction distending after sliding；The appearance of slips 41
Face is staggeredly equipped with longitudinal slips 42, transverse and longitudinal slip insert 43.
The lower end of lower mandrel 40 through being threaded with pilot seal system 5, pilot seal system 5 include protrusion-dispelling ring 50,
Packing element 51, guide head 52；Packing element 51 is installed between protrusion-dispelling ring 50 and guide head 52, and guide head 52 connects with the lower screw thread of mandrel 40
Connect；
The top outer of lower mandrel 40 is cased with spring system 6, and spring system 6 includes spherical ball 19, upper tooth block 20, bullet
Spring 21, check ring 22, lower tooth block 23；The upper tooth block 20 is in annular, and the inner surface setting of upper tooth block 20 has internal thread, interior
Screw thread and the external screw thread on the lower top of mandrel 40 are in mating connection；The bottom of upper tooth block 20 is provided with the triangular bump with chamfering；
The upper center bottom of tooth block 20, which is compressed, spring 21；
The contact of the bottom of spring 21 has check ring 22, and check ring 22 is in annular, and the bottom end surface of check ring 22 is set
Have and spherical ball 19 is installed in semi-circular recesses, semi-circular recesses；The downside of spherical ball 19 is contacted with lower tooth block 23；
Lower tooth block 23 is internally provided with shoulder hole, and ladder hole end surface is provided with semi-circular recesses, semi-circular recesses and installed
There is spherical ball 19；Shoulder hole inner surface setting, which has to be provided with sealing ring, sealing ring in annular groove, annular groove, to be combined with
Lower mandrel 40；The top end face of lower tooth block 23 is provided with the triangle concave block with chamfering, and triangle concave block can be with upper tooth block 20
Triangular bump intermeshing transmission moment of torsion；The outer surface of lower tooth block 23 is provided with external screw thread, external screw thread and upper mandrel 1 formation spiral shell
Line is connected.
Compared with the prior art, effect of the present utility model is：1) this top drives casing appliances and uses fully mechanical structure,
Extra power source need not be provided, with it is safe and efficient the characteristics of；2) this top drive casing appliances it is rational in infrastructure, it is simple to operate just
Profit；3) drive casing appliances in this top is simple in construction, thus can reduce processing and manufacturing difficulty, reduces production cost.
Brief description of the drawings
Fig. 1 is the utility model three dimensional structure diagram.
Fig. 2 is the half-sectional structural representation of the utility model plane.
Fig. 3 is the utility model three dimensional sectional view.
Fig. 4 is upper core shaft structure schematic diagram.
Fig. 5 is spring system and threaded drive systems mounting structure schematic diagram.
Fig. 6 is that spring system three-dimensional cuts open structural representation.
Fig. 7 cuts open structural representation for the three-dimensional before upper tooth block and lower tooth the block engagement of spring system.
Fig. 8 cuts open structural representation for the check ring three-dimensional of spring system.
Fig. 9 cuts open structural representation for the three-dimensional of threaded drive systems.
Figure 10 cuts open structural representation for the inner barrel three-dimensional of threaded drive systems.
Figure 11 cuts open structural representation for the outer cylinder body three-dimensional of threaded drive systems.
Figure 12 cuts open structural representation for the three-dimensional of power-transmission system.
Figure 13 cuts open structural representation for the slip spider three-dimensional of power-transmission system.
Figure 14 cuts open structural representation for the three-dimensional of slip system.
Figure 15 is the partial schematic diagram of slip system slip insert.
Figure 16 is that pilot seal system three-dimensional cuts open structural representation.
1. on mandrel, 2. screw thread drive systems, 3. power-transmission systems, 4. slip systems, 5. pilot seal systems, 6. springs
System, 11. taper threads, 12. external splines, 19. spherical balls, tooth block on 20., 21. springs, 22. check rings, 23. lower tooth blocks,
24. inner barrel, 25. small bearings, 26. small bearing (ball) covers, 27. outer cylinder bodies, 31. big bearings, 32. big bearing (ball) covers, 33. slips
Seat, 34. big round nuts, 35. steps, 36. external screw threads, 40. times mandrels, 41. slips, 42. longitudinal slip inserts, 43. horizontal slips
The protrusion-dispelling ring of tooth 50., 51. packing elements, 52. guide heads.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
Drive casing appliances, including upper mandrel 1, screw drive system in a kind of reference picture 1~3, screw drive fully mechanical top
System 2, power-transmission system 3, slip system 4, pilot seal system 5, spring system 6.The upper end outer surface of upper mandrel 1 is provided with
External screw thread, external screw thread drives to be formed with top and is threadedly coupled.The lower end inner surface setting of upper mandrel 1 has internal thread, internal thread and spring
The formation threaded connection of system 6.Lower mandrel 40 is hung with spring system 6.The upside of lower mandrel 40 is cased with threaded drive systems 2.
The lower end of the bolt of threaded drive systems 2 is connected with power-transmission system 3；Slip system 4 is installed in power-transmission system 3；Slips
The lower end of system 4 is threaded with pilot seal system 5.Wherein, upper mandrel 1 plays connection top driving device, carrying gravity, moment of torsion
Effect；Threaded drive systems 2 play provides driving force for slips, drives the footpath distending of slips 41, reaches stretching internal surface of sleeve pipe
Effect；Power-transmission system 3 plays a part of transmission axial load, prevents slips from following threaded drive systems 2 to rotate；Slips system
System 4 plays executing agency's effect, for stretching internal surface of sleeve pipe, completes the effect such as some row casing jobs；Pilot seal system 5
Play a part of guiding and sealing casing appliances；Spring system 6 plays transmission moment of torsion, carrying gravity, and makes slip system 4 extensive
The effect of multiple reset condition.The utility model will be described in further detail below.
Reference picture 4, the upper end outer surface of upper mandrel 1 is provided with taper thread 11, and taper thread 11 is used for and top driving device connection.
The center outer surface of upper mandrel 1 has rectangle external splines 12 along annular design, and external splines 12 is engaged with the spline of inner barrel 24
Spline connection is formed, so as to transmit the rotary motion of top driving device.The lower end inner surface of upper mandrel 1 is designed with internal thread, interior spiral shell
Line is threadedly coupled with the formation of lower tooth block 23.
Reference picture 5, Fig. 9~Figure 10, upper mandrel 1 are connected with the formation spline of threaded drive systems 2.Threaded drive systems 2 are wrapped
Include inner barrel 24, outer cylinder body 27, small bearing 25, small bearing (ball) cover 26.The outer surface of inner barrel 24 be in ladder shaft-like, multi-diameter shaft it is big
Axle outer surface is provided with external screw thread, and external screw thread is threadedly coupled with the formation of outer cylinder body 27, so that the rotation for rotating top driving device be transported
It is dynamic, it is converted into the axial movement of outer cylinder body 27.The small axial end of the multi-diameter shaft of inner barrel 24 sets 12 screwed holes, and screwed hole is used
In the small bearing (ball) cover 26 of connection.The inner surface setting of inner barrel 24, which has on the upside of step, step, is circumferentially designed with spline, flower
Coordinate the external splines 12 for being provided with mandrel 1 in keyway, mandrel 1 is connected with the formation spline of outer cylinder body 27, so as to transmit top
The rotary motion of driving device.Small bearing 25 is installed in the downside of the step of inner barrel 24, and positioned with step, fasten small bearing
25；Small bearing 25 is made up of a pair of taper roll bearings, so that outer cylinder body 27 can be rotated relative to lower mandrel 40.
Reference picture 5, Figure 11, outer body inner surface setting, which has in the circular hole on the upside of step, step, is provided with internal thread, interior
Screw thread is used to be threadedly coupled with the formation of outer cylinder body 27.Positioning is provided with big bearing 31 in circular hole on the downside of step, big bearing 31 by
A pair of taper roll bearings are constituted, and big bearing 31 can be such that power drive system is rotated relative to lower mandrel 40.The end face of step is set
Screwed hole is equipped with, bolt is connected with the big bearing (ball) cover 32 of power-transmission system 3 through screwed hole.
13~Figure 14 of reference picture, power-transmission system 3 includes big round nut 34, big bearing 31, big bearing (ball) cover 32, slips
Seat 33.The inner surface of slip spider 33 is cased with lower mandrel 40；The outer surface of slip spider 33 is stepped.The downside of slip spider 33 is designed with out
Mouthful oblique T-slot, six slips 41 are installed in oblique T-slot, slips 41 along lower mandrel 40 slide when, oblique T-slot can make slips
41 upper ends also distending.Slip spider step 35 is provided with the upside of oblique T-slot, the upside of slip spider step 35 is provided with slip spider external screw thread
36, slip spider external screw thread 36 is externally connected with big round nut 34.Big bearing 31 be installed on slip spider step 35 and big round nut 34 it
Between, big bearing 31 is positioned and fastened by big bearing (ball) cover 32.Big bearing 32 is made up of a pair of taper roll bearings.Big bearing 31
Power-transmission system 3 can be made to be rotated relative to lower mandrel 40, so as to prevent power-transmission system 3 from following lower mandrel 40 to rotate.
Reference picture 14, Figure 15, slip system 4 include lower mandrel 40, slips 41.The lower tip designs of mandrel 40 have multi-diameter shaft,
Cascaded surface upper outside surfaces are provided with one section of external screw thread, and external screw thread is externally connected with tooth block 20.One section is designed with the downside of cascaded surface
External screw thread (being to draw in figure), external screw thread is externally connected with round nut, and round nut is used to install, position big bearing 31.Lower mandrel 40
Spring system 6 is installed outside the multi-diameter shaft of top.It is provided with the downside of the lower outer surface of mandrel 40 on six wedge surfaces, each wedge surface and coordinates peace
Equipped with a slips 41.The inside bottom surface of slips 41 is provided with interior wedge surface.The interior wedge surface of slips 41 is installed on the outer of lower mandrel 40
In wedge surface, and slips 41 can be slided along wedge surface.Due to the wedge effect of wedge surface, slips 41 can radially distending, support slips 41
Tight internal surface of sleeve pipe, so as to realize sleeve pipe clamping, rotation.In addition, the outer surface interlaced arrangement of slips 41 has horizontal slip insert 43 and vertical
To the tooth of slips 42；Horizontal and vertical slip insert interlaced arrangement can increase horizontal frictional force, be trapped plumber so as to improve top drive
Tool upper button ability, and moment of torsion transmission capacity.The lower lower end of mandrel 40 is threaded with pilot seal system 5.
Reference picture 16, pilot seal system 5 includes protrusion-dispelling ring 50, packing element 51, guide head 52；Packing element 51 is installed on protrusion-dispelling ring
Between 50 and guide head 52, guide head 52 is threadedly coupled with lower mandrel 40.Protrusion-dispelling ring 50 is used to limit big when packing element 51 is pressurized
Deformational behavior, to prevent mud from revealing.Packing element 51 is, in leather cup shape, to there is self-sealing function.Guide head 52 is used to guide slips system
Unite 4 sleeve pipe annular spaces.
Reference picture 5, Fig. 6, the lower top outer of mandrel 40 are cased with spring system 6, and spring system 6 includes spherical ball 19, on
Tooth block 20, spring 21, check ring 22, lower tooth block 23.Upper tooth block 20 is in annular, and the inner surface setting of upper tooth block 20 has interior spiral shell
Line, internal thread is engaged with the external screw thread on the lower top of mandrel 40, forms threaded connection.The bottom of upper tooth block 20 is provided with band chamfering
Triangular bump, triangular bump is easy in the triangle cavity of guiding insertion lower tooth block 23.
Reference picture 6, Fig. 7, the upper center bottom of tooth block 20, which is compressed, spring 21, and the contact of the bottom of spring 21 has check ring 22.
Check ring 22 be in annular, the bottom end surface of check ring 22 be provided with semi-circular recesses, semi-circular recesses be provided with it is spherical
Ball 19, the effect of spherical ball 19 is when initial, to prevent lower mandrel 40 from following mandrel 1 to rotate.
Reference picture 8, the downside of spherical ball 19 is contacted with lower tooth block 23.Lower tooth block 23 is internally provided with shoulder hole, shoulder hole
End face, which is provided with semi-circular recesses, semi-circular recesses, is provided with spherical ball 19, and the effect of spherical ball 19 is initial
When, prevent lower mandrel 40 from following mandrel 1 to rotate.Shoulder hole inner surface setting have be provided with annular groove, annular groove it is close
Lower mandrel 40 is combined with seal, sealing ring；When sealing ring is used to prevent circulating mud, mud is missed from lower tooth block 23.Lower tooth
The top end face of block 23 is provided with the triangle concave block with chamfering, and triangle concave block can be mutual with the triangular bump of upper tooth block 20
Engagement, so as to transmit the moment of torsion of top driving device.The outer surface of lower tooth block 23 is provided with external screw thread, and external screw thread is used for spring system
6 are installed in mandrel 1.
The main operational principle that casing appliances is driven on a kind of screw drive fully mechanical top of the utility model is：1) slips 41
It is radially expanded principle：Casing appliances stretches into internal surface of sleeve pipe, top drive rotation drive upper mandrel 1 rotate (due to the effect of spring 21,
This at present axial force suffered by mandrel 40 it is smaller, upper tooth block 20 is separated with lower tooth block 23, and lower mandrel 40 is not rotated), upper mandrel 1 passes through
Spline connection drives inner barrel 24 to rotate, and inner barrel 24 moves axially outer cylinder body 27 by screw thread, and outer cylinder body 27 is moved axially
Slips 41 is promoted to slide (due to the effect of big bearing 31, slip system 4 can not follow mandrel 1 to rotate) along wedge surface, due to wedge
The dilating effect in face makes the outwards expansion of slips 41, so that stretching internal surface of sleeve pipe.2) principle is detained on：The stretching internal surface of sleeve pipe of slips 41
Afterwards, casing appliances is lifted, now, is more than the elastic force of spring 21, upper tooth block 20 and the lower tooth block of spring system 6 in sleeve pipe gravity
23 engagements, are detained so that the moment of torsion for pushing up drive is passed in lower mandrel 40, realization.3) the radial contraction principle of slips 41：When sleeve pipe is single
After tripping in terminates, start top driving device, allow it to reversely rotate, move up outer cylinder body 27, so as to pull up slips 41, make
The radial contraction of slips 41, now, under the action of the spring 21, the upper tooth block 20 and lower tooth block 23 of spring system 6 are separated.4) sleeve pipe
Circulating mud principle：Because cup packer 51 has self-sealing function, it therefore, it can need circulating mud at any time according to scene.
Claims (1)
1. casing appliances is driven on a kind of screw drive fully mechanical top, including upper mandrel (1), threaded drive systems (2), power are passed
Delivery system (3), slip system (4), pilot seal system (5), spring system (6), it is characterized in that：Outside the upper end of upper mandrel (1)
Surface is provided with external screw thread, and external screw thread drives to be formed with top and is threadedly coupled；The lower end inner surface setting of upper mandrel (1) has internal thread,
Internal thread is threadedly coupled with spring system (6) formation；Lower mandrel (40) is hung with spring system (6)；Lower mandrel (40) it is upper
Side is cased with power-transmission system (3)；Bolt connection has threaded drive systems (2) on the upside of power-transmission system (3) system；Power is passed
Slip system (4) is housed on the downside of delivery system (3)；Slip system (4) lower end is threaded with pilot seal system (5)；
The upper end outer surface of the upper mandrel (1) is provided with taper thread, and taper thread is threadedly coupled with top driving device formation；Upper mandrel
(1) center outer surface is provided with external splines (12), and external splines (12) is engaged to form spline with the spline of inner barrel (24)
Connection；The lower end inner surface setting of upper mandrel (1) has internal thread, and internal thread is threadedly coupled with lower tooth block (23) formation；
The upper mandrel (1) is connected with threaded drive systems (2) formation spline, and the threaded drive systems (2) include inner barrel
(24), small bearing (25), small bearing (ball) cover (26), outer cylinder body (27)；Inner barrel (24) outer surface is in ladder shaft-like, multi-diameter shaft
Big axle outer surface is provided with external screw thread, and external screw thread is used to connect outer cylinder body (27)；The small axial end of multi-diameter shaft is threaded hole, spiral shell
Pit is used to connect small bearing (ball) cover (26)；The inner surface setting of inner barrel (24), which has on the upside of step, step, is provided with spline
The external splines (12) of groove, spline and upper mandrel (1), which cooperates, transmits rotary motion；Small bearing (25) is installed on step lower opening
Interior, step is used to position small bearing (25), and small bearing (25) is compressed by small bearing (ball) cover (26)；
Outer cylinder body (27) inner surface setting, which has, is provided with internal thread, internal thread and inner barrel in the circular hole on the upside of step, step
(24) threaded connection is formed；Big bearing (31) is installed in step lower opening, and step is used to position big bearing (31)；Nose end under step
Face is provided with screwed hole, and bolt is connected with big bearing (ball) cover (32) through screwed hole；
The power-transmission system (3) includes big bearing (31), big bearing (ball) cover (32), slip spider (33), big round nut (34)；
Slip spider (33) inner surface is cased with lower mandrel (40), and slip spider (33) outer surface is stepped；It is provided with the downside of slip spider (33)
Slips (41) is installed in the oblique T-slot of opening, oblique T-slot；It is provided with the upside of oblique T-slot on the upside of step (35), step (35)
It is provided with external screw thread (36), external screw thread (36) and is connected with big round nut (34)；Big bearing (31) is installed on step (35) and big
Between round nut (34)；Big bearing (31) is by big bearing (ball) cover (32), outer cylinder body (27) positioning, fastening；Power-transmission system (3)
It can be rotated relative to lower mandrel (40)；
The slip system (4) includes lower mandrel (40), slips (41)；Lower mandrel (40) the top outer surface is provided with outer spiral shell
Line, external screw thread is formed with upper tooth block (20) and is threadedly coupled；It is provided with the downside of external screw thread outside multi-diameter shaft, multi-diameter shaft and spring system is installed
Unite (6)；The lower side external surface of lower mandrel (40) sets outer wedge surface, and slips (41) inside bottom surface is provided with interior wedge surface；Slips
(41) interior wedge surface is installed in the outer wedge surface of lower mandrel (40)；Wedge surface of the slips (41) along lower mandrel (40) can be radially after sliding
Distending；Slips (41) outer surface is staggeredly equipped with longitudinal slip insert (42), horizontal slip insert (43)；
Lower mandrel (40) lower end includes protrusion-dispelling ring through being threaded with pilot seal system (5), pilot seal system (5)
(50), packing element (51), guide head (52)；Packing element (51) is installed between protrusion-dispelling ring (50) and guide head (52), guide head (52)
It is threadedly coupled with lower mandrel (40)；
Lower mandrel (40) top outer is cased with spring system (6), and spring system (6) includes spherical ball (19), upper tooth block
(20), spring (21), check ring (22), lower tooth block (23)；The upper tooth block (20) is in annular, the interior table of upper tooth block (20)
Face is provided with internal thread, and internal thread is connected with the external screw thread on lower mandrel (40) top；The bottom of upper tooth block (20) is provided with band and fallen
The triangular bump at angle；Upper tooth block (20) center bottom, which is compressed, spring (21)；
The contact of spring (21) bottom has check ring (22), and check ring (22) is in annular, check ring (22) bottom end surface
It is provided with semi-circular recesses, semi-circular recesses and spherical ball (19) is installed；With lower tooth block (23) on the downside of spherical ball (19)
Contact；
Lower tooth block (23) is internally provided with shoulder hole, and ladder hole end surface is provided with semi-circular recesses, semi-circular recesses and is provided with
Spherical ball (19)；Shoulder hole inner surface setting, which has to be provided with sealing ring, sealing ring in annular groove, annular groove, to be combined with
Lower mandrel (40)；The top end face of lower tooth block (23) is provided with the triangle concave block with chamfering, and triangle concave block can be with upper tooth block
(20) triangular bump intermeshing transmission moment of torsion；The outer surface of lower tooth block (23) is provided with external screw thread, external screw thread and upper core
Axle (1) formation threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720161609.6U CN206477792U (en) | 2017-02-22 | 2017-02-22 | Drive casing appliances in a kind of screw drive fully mechanical top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720161609.6U CN206477792U (en) | 2017-02-22 | 2017-02-22 | Drive casing appliances in a kind of screw drive fully mechanical top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206477792U true CN206477792U (en) | 2017-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720161609.6U Withdrawn - After Issue CN206477792U (en) | 2017-02-22 | 2017-02-22 | Drive casing appliances in a kind of screw drive fully mechanical top |
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| CN (1) | CN206477792U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044260A (en) * | 2017-02-22 | 2017-08-15 | 西南石油大学 | Drive casing appliances in a kind of screw drive fully mechanical top |
| CN109940556A (en) * | 2019-05-22 | 2019-06-28 | 山东科瑞机械制造有限公司 | A kind of wellhead casing pipe disassemblerassembler |
-
2017
- 2017-02-22 CN CN201720161609.6U patent/CN206477792U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044260A (en) * | 2017-02-22 | 2017-08-15 | 西南石油大学 | Drive casing appliances in a kind of screw drive fully mechanical top |
| CN109940556A (en) * | 2019-05-22 | 2019-06-28 | 山东科瑞机械制造有限公司 | A kind of wellhead casing pipe disassemblerassembler |
| CN109940556B (en) * | 2019-05-22 | 2019-08-30 | 山东科瑞机械制造有限公司 | A kind of wellhead casing pipe disassemblerassembler |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170908 Effective date of abandoning: 20181204 |