CN108487872A - A kind of piano wire is slipped out of the hand tool - Google Patents
A kind of piano wire is slipped out of the hand tool Download PDFInfo
- Publication number
- CN108487872A CN108487872A CN201810349645.4A CN201810349645A CN108487872A CN 108487872 A CN108487872 A CN 108487872A CN 201810349645 A CN201810349645 A CN 201810349645A CN 108487872 A CN108487872 A CN 108487872A
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- straight trough
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- tool
- piano wire
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- 238000009827 uniform distribution Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 3
- 210000001364 upper extremity Anatomy 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 241000405070 Percophidae Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Abstract
The present invention discloses a kind of piano wire and slips out of the hand tool, including fishing head, mandrel, outer spring, transpositing pin, upper torsion loop, rotating nuts, outer barrel, lower torsion loop, inner spring and duckbilled.The piano wire tool of slipping out of the hand is connected in well testing tool string, with all tools while G.I.H, when being unable to unfreezing using other releasing tools when tool occur and meeting card, it can be by gently lifting piano wire up and down, when lifting number and reaching some numerical value, realize that downhole tool is slipped out of the hand, piano wire tool all of the above tool of slipping out of the hand can play safely ground, construction loss is reduced to greatest extent, piano wire fatigue caused by being also avoided that multiple jarring.
Description
Technical field
The present invention relates to oilfield oil well well workover technical field of construction equipment, specifically a kind of piano wire is slipped out of the hand tool.
Background technology
Oil field is in well testing work progress, and when well testing tool in underground, which is met, to be blocked, the treatment measures generally used are using each
The kind upward jarring of bumper jar, including mechanic jar, spring bumper jar, hydraulic shock device etc., if cannot by above-mentioned measure
When solving the problems, such as, then launch cutter into well then steel wire mentioned into ground by steel wire shearing, above method there are the problem of
It is that multiple jarring causes the intensity of steel wire near pulley to reduce and breaks, steel wire and well testing tool are left in well and can not remove；
And steel wire in well can only be taken out by launching cutter, all other well testing tool still remains in well in well.
Invention content
Goal of the invention：The purpose of the present invention is for the deficiency in current technology, providing a kind of piano wire to slip out of the hand tool,
Be connected in well testing tool string and all tools simultaneously G.I.H, when occur tool meet card and utilize other releasing tools not
When energy unfreezing, when handling number reaches some numerical value, it can realize that downhole tool takes off by gently lifting piano wire up and down
Hand, piano wire tool all of the above tool of slipping out of the hand can play safely ground, reduce construction loss to greatest extent, are also avoided that
Piano wire fatigue caused by multiple jarring.
Technical solution：To achieve the above object, the present invention provides a kind of piano wire and slips out of the hand tool, including fishing head, core
Axis, outer spring, transpositing pin, upper torsion loop, rotating nuts, outer barrel, lower torsion loop, inner spring and duckbilled；The mandrel is elongated
Round bar shape, outer circle is ladder-like, and lower diameter is big, and upper diameter is small, topmost connects fishing head, and path outer circle has circumference uniform distribution
The upper and lower part of two track grooves, track groove is straight trough and, the transition portion of top straight trough and lower part straight trough parallel with axis
It is curved groove, mandrel lower part major diameter outer circle has symmetrical two lugs, and two lugs are close to great circle lower part；The fishing head is
Rod-shaped, end is more than the sphere of bar portion with diameter；The outer barrel is outer circle rule, and inner circle has the tubular structure of half the circumference of the sleeve where it joins the shoulder, inner circle
Upper diameter is big, and inner circle lower diameter is small, and major diameter position upper end has internal thread to be connect with rotating nuts, and path position lower end has interior
It is threadedly coupled duckbilled, it is vertical straight slot that, which there are 2 track through-holes of circumference uniform distribution, track through-hole in path position, and mandrel is socketed in
In outer barrel, mandrel upper lug can be slided in outer barrel track through-hole, and two lug lateral surface distances are less than outer barrel inner circle major diameter；Institute
It is cylindric to state rotating nuts, and internal diameter rule, outer circle has screw thread, connect with outer barrel upper end, and there are broached-tooth design in upper and lower two end faces
Even circumferential is distributed, and the both ends broached-tooth design same direction is opposite；The upper torsion loop is cylinder-like structure, internal diameter rule, upper torsion
Square ring set is on mandrel and can slide, and upper torsion loop side is provided with threaded hole connection transpositing pin, and transpositing pin is embedded in track groove
It can be slided in track groove, upper torsion loop lower end is provided with the stop sawtooth with engagement in rotating nuts；The upper torque
It is socketed with outer spring on mandrel between ring and fishing head；The lower torsion loop is cylinder-like structure, internal diameter rule, lower torsion loop
It is sleeved on mandrel and can slide, be located in outer barrel, lower torsion loop side is provided with threaded hole connection transpositing pin, and transpositing pin is embedded in rail
It can be slided in track groove in road slot, lower torsion loop upper end is provided with unscrews sawtooth with engagement under rotating nuts；Lower torsion
Inner spring, the limitation of inner spring lower end and outer barrel inner circle path part upper limb are socketed with below square ring on mandrel；The duckbilled is circle
Rod structure, upper end are connected through a screw thread outer barrel lower end, and duckbilled lower interior portion is hollow circuit cylinder, and side is provided with a straight with hollow circuit cylinder
The identical handling hole of diameter, handling hole lower section have the straight trough for extending to bottom together, straight trough diameter to be less than handling bore dia, duckbilled bottom
Portion is closed state, and bottom centre opens connect internal hollow cylinder and straight trough there are one through-hole identical with straight trough diameter；It is described
Track groove top straight trough, which is twisted relative to lower part straight trough to rotating nuts, send direction to deflect certain angle, and the transpositing pin of upper torsion loop begins
It is slided eventually in top straight trough, the transpositing pin of lower torsion loop can be slidably reciprocated by curved groove between top straight trough and lower part straight trough；
Sawtooth per tooth is inclined surface towards rotating nuts rotational direction also side under the rotating nuts, is towards tightening direction one side
Vertical plane.
As a kind of improvement of this programme, 4 bar shapeds that the outer barrel inner circle larger portion barrel is uniformly distributed along the circumference
Through-hole.
As a kind of improvement of this programme, it is connected through a screw thread outside the upper torsion loop there are one protection ring, protection ring
Transpositing pin is coated on interior.
As a kind of improvement of this programme, track groove top straight trough is 30- relative to the angle that lower part straight trough deflects
60°。
As a kind of improvement of this programme, the rotating nuts thread turns encloses for 10-15.
As a kind of improvement of this programme, track groove top straight trough is relative to the angle that lower part straight trough deflects
47.5°。
Advantageous effect：Piano wire of the present invention is slipped out of the hand tool, practice of construction application very simple, practice of construction mistake
The piano wire tool of slipping out of the hand is connected to G.I.H in tool string by Cheng Zhong, and other unfreezing works are utilized when there is tool chance card
When tool is unable to unfreezing, operating personnel are lower on the ground to lift piano wire, and mandrel lifts in the process play up and down, mandrel in steel wire
Lower part lug slides in outer barrel upper rail through-hole, can not carry out azimuthal variation, meanwhile, limitation of the upper torsion loop in transpositing pin
Under, do not occur angularly to rotate, the transpositing pin of lower torsion loop between top straight trough and lower part straight trough due to moving, to lower torque
Ring also generates rotation back and forth, since sawtooth per tooth is towards rotating nuts rotational direction also side under the rotating nuts
Inclined surface is vertical plane towards tightening direction one side, therefore when torque circumferential direction rotating nuts rotational direction rotation instantly, lower torsion
The lower sawtooth unscrewed in sawtooth and rotating nuts on square ring is vertical portion face, and lower torsion loop is under the action of sawtooth
Give rotating nuts one power rotated to rotational direction, at this time due to sawtooth in rotating nuts and lower sawtooth on the contrary, rotation spiral shell
The stop sawtooth of sawtooth and upper torsion loop is contact of incline plane on mother, thus rotating nuts under the drive of lower torsion loop toward the side of unscrewing
To rotation；If the rotation of lower torque circumferential direction rotating nuts tightening direction, torsion loop tightens sawtooth and rotating nuts at present for this
Lower sawtooth contact of incline plane, the stop sawtooth of upper torsion loop and the upper sawtooth vertical plane contact of rotating nuts, rotating nuts are fixed not
Dynamic, by lifting several times, rotating nuts are gradually unscrewed and are detached from outer barrel, and piano wire tool of slipping out of the hand realizes separation at this time,
Piano wire slips out of the hand tool string above tool and steel wire can be removed, and outer barrel and duckbilled are discarded in well.
4 strip through-holes that outer barrel inner circle larger portion barrel is uniformly distributed along the circumference ensure unicom inside and outside outer barrel, will not
The case where negative pressure in appearance cylinder, mandrel can not take out, while outer cylinder material can be also reduced, it is cost-effective.
It is connected through a screw thread outside upper torsion loop there are one protection ring, in transpositing pin is coated on by protection ring, protection is outside
Upper torsion loop outside cylinder is not easy to receive damage in underground, can work normally.
Track groove top straight trough is 30-60 ° relative to the angle that lower part straight trough deflects, and rotating nuts thread turns is 10-
15 circles, since part play can also occur for piano wire tool of slipping out of the hand during going into the well, by repetition test, according to above-mentioned data
Track groove and rotating nuts are set, and mandrel is in 100 times or so the achievable separation that move up and down, it is ensured that well testing during going into the well
The steel wire tool of slipping out of the hand will not be detached because of the play during going into the well.
Description of the drawings
Fig. 1, the piano wire are slipped out of the hand tool construction schematic diagram；
Fig. 2, the core shaft structure schematic diagram；
Fig. 3, the upper torsion loop structural schematic diagram；
Fig. 4, the rotating nuts structural schematic diagram；
Fig. 5, the outer tube structure schematic diagram；
Fig. 6, the duckbill structure schematic diagram；
Reference numerals list：1, fishing head；2, mandrel；3, outer spring；4, protection ring；5, transpositing pin；6, upper torsion loop；7, it rotates
Nut；8, outer barrel；9, lower torsion loop；10, inner spring；11, duckbilled；12, hollow circuit cylinder；13, handling hole；14, straight trough；21, rail
Road slot；22, lug；61, threaded hole；62, stop sawtooth；71, upper sawtooth；72, lower sawtooth；81, strip through-hole；82, track is logical
Hole.
Specific implementation mode
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific implementation modes are only
For illustrating the present invention rather than limiting the scope of the invention.It should be noted that word " preceding " used in the following description,
" rear ", "left", "right", "up" and "down" refer to that the direction in attached drawing, word "inner" and "outside" refer respectively to direction or remote
Direction from geometric center of specific component.
It is as shown in Figure 1 that a kind of piano wire is slipped out of the hand tool, including fishing head 1, mandrel 2, outer spring 3, protection ring 4, changes
Position pin 5, upper torsion loop 6, rotating nuts 7, outer barrel 8, lower torsion loop 9, inner spring 10 and duckbilled 11.
Mandrel 2 as shown in Figure 2 is elongated round bar shape, and outer circle is ladder-like, and lower diameter is big, and upper diameter is small, topmost
Connect fishing head 1, path outer circle has two track grooves 21 of circumference uniform distribution, the upper and lower part of track groove 21 be straight trough 14 and with
Axis is parallel, and the transition portion of top straight trough and lower part straight trough is curved groove, and 2 lower part major diameter outer circle of mandrel has symmetrical two
Lug 22, two lugs 22 are close to great circle lower part.Fishing head 1 is rod-shaped, and end is more than the sphere of bar portion with diameter.
Outer barrel 8 as shown in Figure 5 is outer circle rule, and inner circle has the tubular structure of half the circumference of the sleeve where it joins the shoulder, and inner circle upper diameter is big, under inner circle
Portion's diameter is small, and major diameter position upper end has internal thread to be connect with rotating nuts 7, and path position lower end has internal thread to connect duckbilled 11,
It is vertical straight slot that, which there are 2 track through-holes 82 of circumference uniform distribution, track through-hole 82 in path position, and mandrel 2 is socketed in outer barrel 8,
2 upper lug 22 of mandrel can be slided in 8 track through-hole 82 of outer barrel, and two lugs, 22 lateral surface distance is less than 8 inner circle major diameter of outer barrel,
4 strip through-holes 81 that 8 inner circle larger portion barrel of outer barrel is uniformly distributed along the circumference.
Rotating nuts 7 as shown in Figure 4 are cylindric, and internal diameter rule, outer circle has screw thread, connect with 8 upper end of outer barrel, thread turns
For 12 circles, about 7 two end faces of rotating nuts have the distribution of broached-tooth design even circumferential, upper sawtooth 71 identical with lower 72 structure of sawtooth
Direction is opposite.
Upper torsion loop 6 as shown in Figure 3 is cylinder-like structure, and internal diameter rule, upper torsion loop 6, which is sleeved on mandrel 2, can simultaneously slide
Dynamic, 6 side of upper torsion loop is provided with threaded hole 61 and connects transpositing pin 5, and transpositing pin 5 is embedded in can be in track groove 21 in track groove 21
Sliding, 6 lower end of upper torsion loop is provided with the stop sawtooth 62 engaged with sawtooth 71 in rotating nuts 7.Upper torsion loop 6 and fishing head
It is socketed with outer spring 3 on mandrel 2 between 1, is connected through a screw thread outside upper torsion loop 6 there are one protection ring 4, protection ring 4 is incited somebody to action
In transpositing pin 5 is coated on.Lower torsion loop 9 is cylinder-like structure, and internal diameter rule, lower torsion loop 9, which is sleeved on mandrel 2, can simultaneously slide,
In outer barrel 8, lower 9 side of torsion loop is provided with threaded hole 61 and connects transpositing pin 5, and transpositing pin 5 is embedded in can be in track groove 21
Sliding in track groove 21, lower 9 upper end of torsion loop is provided with unscrews sawtooth with what 7 times sawtooth of rotating nuts 72 engaged.Lower torsion loop 9
Inner spring 10, the limitation of 10 lower end of inner spring and 8 inner circle path part upper limb of outer barrel are socketed on lower section mandrel 2.
For 11 structure of duckbilled as shown in fig. 6, duckbilled 11 is cylindrical structure, upper end is connected through a screw thread 8 lower end of outer barrel, duckbilled 11
Lower interior portion is hollow circuit cylinder 12, and side is provided with a handling hole 13 identical with 12 diameter of hollow circuit cylinder, and 13 lower section of handling hole has
Extend to the straight trough 14 of bottom together, 14 diameter of straight trough is less than 13 diameter of handling hole, and 11 bottom of duckbilled is closed state, in bottom
The heart is opened connect internal hollow cylinder 12 and straight trough 14 there are one through-hole identical with 14 diameter of straight trough.It is different in actual use
Tool string upper and lower side is separately connected fishing head 1 and duckbilled 11, and fishing head 1 can be embedded in duckbilled 11 and realize quick despatch.
21 top straight trough of track groove, which is twisted relative to lower part straight trough to rotating nuts 7, send direction to deflect 47.5 °, upper torsion loop 6
Transpositing pin 5 always top straight trough slide, the transpositing pin 5 of lower torsion loop 9 can be straight in top straight trough and lower part by curved groove
It slidably reciprocates between slot；7 times sawtooth of rotating nuts, 72 per tooth is inclined surface towards 7 rotational direction of rotating nuts also side, and direction is twisted
Tight direction one side is vertical plane.
During practice of construction, the piano wire tool of slipping out of the hand is connected to G.I.H in tool string, when there is tool chance
When blocking and being unable to unfreezing using other releasing tools, operating personnel are lower on the ground to lift piano wire, and mandrel 2 is lifted in steel wire
Play, the sliding in the upper rail through-hole 82 of outer barrel 8 of 2 lower part lug 22 of mandrel can not carry out azimuthal variation, together up and down in the process
When, upper torsion loop 6 does not occur angularly to rotate under the limitation of transpositing pin 5, and the transpositing pin 5 of lower torsion loop 9 is due in top straight trough
It is moved between the straight trough of lower part, to which lower torsion loop 9 also generates rotation back and forth, since 7 times sawtooth of rotating nuts 72 are every
Tooth is inclined surface towards 7 rotational direction of rotating nuts also side, is vertical plane, therefore torque instantly towards tightening direction one side
When ring 9 is rotated to 7 rotational direction of rotating nuts, the sawtooth of unscrewing in lower torsion loop 9 with the lower sawtooth 72 in rotating nuts 7 is perpendicular
Straight part face, lower torsion loop 9 give rotating nuts 7 one power rotated to rotational direction under the action of sawtooth, this
When due to sawtooth 71 and lower sawtooth 72 in rotating nuts 7 on the contrary, in rotating nuts 7 sawtooth 71 and upper torsion loop 6 stop sawtooth
62 be contact of incline plane, therefore rotating nuts 7 rotate under the drive of lower torsion loop 9 toward rotational direction；If lower torsion loop 9 is to rotation
7 tightening direction of turn nut rotates, and torsion loop 9 tightens sawtooth and 72 contact of incline plane of lower sawtooth of rotating nuts 7, upper torsion at present for this
The stop sawtooth 62 of square ring 6 and 71 vertical plane of the upper sawtooth contact of rotating nuts 7, rotating nuts 7 are fixed, by several times
Lifting, rotating nuts 7 are gradually unscrewed and are detached from outer barrel 8, and piano wire tool of slipping out of the hand realizes and detach that piano wire is slipped out of the hand at this time
Tool string and steel wire above tool can be removed, and outer barrel 8 and duckbilled 11 are discarded in well.
The technical means disclosed in the embodiments of the present invention is not limited only to the technological means disclosed in the above embodiment, further includes
By the above technical characteristic arbitrarily the formed technical solution of combination.
Claims (6)
- The tool 1. a kind of piano wire is slipped out of the hand, which is characterized in that including fishing head (1), mandrel (2), outer spring (3), transpositing pin (5), upper torsion loop (6), rotating nuts (7), outer barrel (8), lower torsion loop (9), inner spring (10) and duckbilled (11)；The mandrel (2) it is elongated round bar shape, outer circle is ladder-like, and lower diameter is big, and upper diameter is small, topmost connects fishing head (1), path outer circle There are two track grooves (21) of circumference uniform distribution, the upper and lower part of track groove (21) is straight trough (14) and, top parallel with axis The transition portion of straight trough and lower part straight trough is curved groove, and mandrel (2) lower part major diameter outer circle has symmetrical two lugs (22), two A lug (22) is close to great circle lower part；The fishing head (1) is rod-shaped, and end is more than the sphere of bar portion with diameter；It is described outer Cylinder (8) is outer circle rule, and inner circle has the tubular structure of half the circumference of the sleeve where it joins the shoulder, and inner circle upper diameter is big, and inner circle lower diameter is small, on major diameter position End has internal thread to be connect with rotating nuts (7), and path position lower end has internal thread to connect duckbilled (11), and path position has circumference equal 2 track through-holes (82) of cloth, track through-hole (82) are vertical straight slot, and mandrel (2) is socketed in outer barrel (8), on mandrel (2) Lug (22) can slide in outer barrel (8) track through-hole (82), and two lugs (22) lateral surface distance is big less than outer barrel (8) inner circle Diameter；The rotating nuts (7) are cylindric, and internal diameter rule, outer circle has screw thread, connect with outer barrel (8) upper end, upper and lower two end faces There are the distribution of broached-tooth design even circumferential, the both ends broached-tooth design same direction opposite；The upper torsion loop (6) is cylinder-like structure, Internal diameter rule, upper torsion loop (6) are sleeved on mandrel (2) and can slide, and upper torsion loop (6) side is provided with threaded hole (61) connection Transpositing pin (5), the embedded track groove (21) of transpositing pin (5) is interior to be slided in track groove (21), and upper torsion loop (6) lower end is provided with The stop sawtooth (62) engaged with sawtooth (71) in rotating nuts (7)；Core between the upper torsion loop (6) and fishing head (1) Outer spring (3) is socketed on axis (2)；The lower torsion loop (9) is cylinder-like structure, and internal diameter is regular, and lower torsion loop (9) is sleeved on core It on axis (2) and can slide, be located in outer barrel (8), lower torsion loop (9) side is provided with threaded hole (61) connection transpositing pin (5), changes Can be in the interior sliding of track groove (21) in the embedded track groove (21) of position pin (5), lower torsion loop (9) upper end is provided with and rotating nuts (7) what sawtooth (72) engaged under unscrews sawtooth；Below lower torsion loop (9) inner spring (10), inner spring are socketed on mandrel (2) (10) lower end limitation and outer barrel (8) inner circle path part upper limb；The duckbilled (11) is cylindrical structure, and upper end is connected through a screw thread Outer barrel (8) lower end, duckbilled (11) lower interior portion are hollow circuit cylinder (12), and side is provided with a identical with hollow circuit cylinder (12) diameter Handling hole (13), handling hole (13) lower section have the straight trough (14) for extending to bottom together, straight trough (14) diameter to be less than handling hole (13) diameter, duckbilled (11) bottom are closed state, and bottom centre opens to be connect there are one through-hole identical with straight trough (14) diameter Internal hollow cylinder (12) and straight trough (14)；Track groove (21) the top straight trough is relative to lower part straight trough to rotating nuts (7) It twists and direction is sent to deflect certain angle, the transpositing pin (5) of upper torsion loop (6) is slided in top straight trough always, and lower torsion loop (9) are changed Position pin (5) can be slidably reciprocated by curved groove between top straight trough and lower part straight trough；Sawtooth (72) is every under the rotating nuts (7) Tooth is inclined surface towards rotating nuts (7) rotational direction also side, is vertical plane towards tightening direction one side.
- The tool 2. a kind of piano wire as described in claim 1 is slipped out of the hand, it is characterised in that：Outer barrel (8) inner circle is larger 4 strip through-holes (81) that a part of barrel is uniformly distributed along the circumference.
- The tool 3. a kind of piano wire as described in claim 1 is slipped out of the hand, it is characterised in that：It is logical outside the upper torsion loop (6) Threaded connection is crossed there are one protection ring (4), transpositing pin (5) is coated on interior by protection ring (4).
- The tool 4. a kind of piano wire as described in claim 1 is slipped out of the hand, it is characterised in that:Track groove (21) top is straight Slot is 30-60 ° relative to the angle that lower part straight trough deflects.
- The tool 5. a kind of piano wire as claimed in claim 4 is slipped out of the hand, it is characterised in that：Rotating nuts (7) fillet of screw Number is that 10-15 is enclosed.
- The tool 6. a kind of piano wire as claimed in claim 5 is slipped out of the hand, it is characterised in that：Track groove (21) top straight trough Angle relative to the deflection of lower part straight trough is 47.5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810349645.4A CN108487872A (en) | 2018-04-18 | 2018-04-18 | A kind of piano wire is slipped out of the hand tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810349645.4A CN108487872A (en) | 2018-04-18 | 2018-04-18 | A kind of piano wire is slipped out of the hand tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108487872A true CN108487872A (en) | 2018-09-04 |
Family
ID=63312516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810349645.4A Pending CN108487872A (en) | 2018-04-18 | 2018-04-18 | A kind of piano wire is slipped out of the hand tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108487872A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4598774A (en) * | 1984-07-07 | 1986-07-08 | Hughes Tool Company | Setting tool with retractable torque fingers |
| CN2327831Y (en) * | 1998-03-19 | 1999-07-07 | 单建民 | Anti-stealing nut |
| CN2605381Y (en) * | 2002-12-20 | 2004-03-03 | 华北石油管理局油气井测试公司 | Oil-gas well measuring safety releasing device |
| CN2663715Y (en) * | 2003-03-24 | 2004-12-15 | 马俊峰 | Loose-proof anti-theft expansion lock bolt |
| CN201843548U (en) * | 2010-10-14 | 2011-05-25 | 中国石油天然气股份有限公司 | Underground detaching device |
| CN103866655A (en) * | 2014-03-06 | 2014-06-18 | 河北翼辰实业集团有限公司 | Anti-loosing retaining system for railway track fastener |
| CN104481394A (en) * | 2014-11-14 | 2015-04-01 | 中国石油集团长城钻探工程有限公司 | Radial horizontal rotating drilling flexible shaft protector |
| CN208122792U (en) * | 2018-04-18 | 2018-11-20 | 盐城庆隆机械有限公司 | A kind of piano wire is slipped out of the hand tool |
-
2018
- 2018-04-18 CN CN201810349645.4A patent/CN108487872A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4598774A (en) * | 1984-07-07 | 1986-07-08 | Hughes Tool Company | Setting tool with retractable torque fingers |
| CN2327831Y (en) * | 1998-03-19 | 1999-07-07 | 单建民 | Anti-stealing nut |
| CN2605381Y (en) * | 2002-12-20 | 2004-03-03 | 华北石油管理局油气井测试公司 | Oil-gas well measuring safety releasing device |
| CN2663715Y (en) * | 2003-03-24 | 2004-12-15 | 马俊峰 | Loose-proof anti-theft expansion lock bolt |
| CN201843548U (en) * | 2010-10-14 | 2011-05-25 | 中国石油天然气股份有限公司 | Underground detaching device |
| CN103866655A (en) * | 2014-03-06 | 2014-06-18 | 河北翼辰实业集团有限公司 | Anti-loosing retaining system for railway track fastener |
| CN104481394A (en) * | 2014-11-14 | 2015-04-01 | 中国石油集团长城钻探工程有限公司 | Radial horizontal rotating drilling flexible shaft protector |
| CN208122792U (en) * | 2018-04-18 | 2018-11-20 | 盐城庆隆机械有限公司 | A kind of piano wire is slipped out of the hand tool |
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