CN109281915A - A kind of locked swivel nut component of axis - Google Patents
A kind of locked swivel nut component of axis Download PDFInfo
- Publication number
- CN109281915A CN109281915A CN201811198443.0A CN201811198443A CN109281915A CN 109281915 A CN109281915 A CN 109281915A CN 201811198443 A CN201811198443 A CN 201811198443A CN 109281915 A CN109281915 A CN 109281915A
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- CN
- China
- Prior art keywords
- swivel nut
- key
- axis
- keyway
- wedge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007937 lozenge Substances 0.000 claims abstract description 19
- 230000007704 transition Effects 0.000 claims description 10
- 230000008685 targeting Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 4
- 210000002421 cell wall Anatomy 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/06—Releasable fastening devices with snap-action
- F16B21/08—Releasable fastening devices with snap-action in which the stud, pin, or spigot has a resilient part
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
- Clamps And Clips (AREA)
Abstract
The present invention relates to a kind of locked swivel nut components of axis, the axis swivel nut that locked swivel nut component includes for being used cooperatively with corresponding axle thread, the keyway axially extended is offered at the internal screw thread of the swivel nut, axis further includes the wedge key being used cooperatively with keyway with locked swivel nut component, have on wedge key for the lozenges with the external thread section interference fastening assembly on axis, and it is opposite with lozenges arrange for swivel nut radially with keyway press cooperation hold out against face, keyway has for the top pressure face for holding out against face press cooperation with wedge key, the radial dimension of top pressure face is greater than the radial dimension of the Bottom of Thread of swivel nut internal thread hole.After swivel nut and axis assembly, wedge key is inserted into the keyway of swivel nut, and face is held out against on wedge key and is cooperated with the top pressure face on keyway, the thread partial coherence immovable fitting on the lozenges and axis of wedge key, is limited and the position of part to be tightened on axis on locked swivel nut and axis.During this is locked, without slotting on axis, the intensity of axis is not influenced.
Description
Technical field
The present invention relates to a kind of locked swivel nut components of axis.
Background technique
Domestic air mail airspace engine axis is high-speed rotating shaft, to fasten the bearing and other parts on high-speed rotating shaft,
The prior art mostly uses greatly the locking plate with Stop structure and the fastening means of plain nut cooperation, locking plate in this fastening means
On Stop structure and axis on notch cooperation, on the bearing or other parts that locking plate is pressed on axis by plain nut, thus
Achieving the purpose that other parts on the bearing or axis on fastener shaft, this fastening means has a good anti-loosing effect, but this
The mode that kind is slotted on axis, greatly weakens the intensity of axis, and especially to some hollow shafts, the intensity of axis is substantially reduced,
Influence its service life.
Summary of the invention
The purpose of the present invention is to provide a kind of locked swivel nut components of axis, are assemblied in for solving fastening in the prior art
Part on axis need slot on axis and the technical issues of weaken axis intensity.
To achieve the above object, axis of the present invention is with the technical solution of locked swivel nut component: axis locked swivel nut component, packet
The swivel nut for being used cooperatively with corresponding axle thread is included, the keyway axially extended is offered at the internal screw thread of the swivel nut, axis is used
Locked swivel nut component further includes the wedge key being used cooperatively with keyway, has on wedge key and fastens for interfering with the external thread section on axis
The lozenges of assembly, and it is opposite with lozenges arrange for swivel nut radially with keyway press cooperation hold out against face, key
Slot has for the top pressure face for holding out against face press cooperation with wedge key, and the radial dimension of top pressure face is greater than swivel nut internal thread hole
The radial dimension of Bottom of Thread.
The beneficial effects of the present invention are: swivel nut and axis assembly after, wedge key be inserted into swivel nut keyway in, held out against on wedge key face with
Top pressure face cooperation on keyway, the thread partial coherence immovable fitting on the lozenges and axis of wedge key, limit and locked swivel nut and
The position of part to be tightened on axis on axis.During this is locked, without slotting on axis, the intensity of axis is not influenced.
It is further limited as to above-mentioned wedge key, the wedge key includes the wedge-shaped key lever equipped with the lozenges at rear portion
The key tongue guide section for cooperating with the keyway guiding of section and front.Wedge key is inserted into keyway, and the key tongue of wedge key front is led
It play the guiding role to portion to wedge key.
Further limited as to above-mentioned key tongue guide section, on the key tongue guide section have with keyway coincide grafting and
Circumferential width is greater than the identical plug division of wedge-shaped key lever section, is equipped with circumferential width in key tongue guide section front and is less than the plug division that coincide
Targeting part.The width of targeting part is less than the plug division that coincide, the convenient guiding to wedge key insertion keyway, the biggish kiss of width
The contact area that plug division increases wedge key and keyway is closed, is avoided under the operating condition that axis runs at high speed, wedge key falls off, and increases high speed and transports
The safety that condition of changing a job lower axle is used with locked swivel nut component.
Further limited as to above-mentioned keyway, the keyway is closing in slot, the bottom of the closing in slot have with it is described
The identical compatible structure in plug division.The shape of closing in slot limits the wedge key and radially deviates from out of this keyway, increases entire
The globality of the locked swivel nut component of axis.
It is further limited as to above-mentioned wedge key, arc transition between the key tongue guide section and the wedge-shaped key lever section
Connection.It avoids the stress of wedge key from concentrating, increases the intensity of wedge key, and be convenient for the roll forming of entire wedge key.
It is further limited as to above-mentioned wedge key, the key tongue guide section is flat segments, the height of the key tongue guide section
Degree is less than the height of the wedge-shaped key lever section.The interference of screw thread on key tongue guide section and axis is avoided, and the key tongue guide section is flat
Straight section, guiding of the shortest key tongue guide section to entire wedge key.
Face is held out against and top pressure face further limits as to above-mentioned, and the groove bottom of the keyway is the top pressure face, institute
It states the flat face arranged opposite with the lozenges of wedge key and holds out against face for described.Top pressure face cooperates with the face that holds out against, and facilitates wedge
The wedging of key and keyway cooperates.
It is further limited as to above-mentioned wedge-shaped key lever section, offers chip space in the wedge shape key lever section.Convenient for modeling
Property deformation thread bits be discharged out of chip space in wedge-shaped key lever section.
Further limited as to above-mentioned keyway, the keyway along the swivel nut be arranged circumferentially at least there are two.
Make swivel nut part uniform force in the circumferential, facilitates the service life for increasing swivel nut.
It is further limited as to above-mentioned swivel nut, the swivel nut outer ring is equipped at least two uniformly distributed twisting slots.It is convenient for
Auxiliary tool positions swivel nut, the convenient assembly with axis.
Detailed description of the invention
Fig. 1 is assembling schematic diagram of the axis provided by the invention with locked swivel nut component specific embodiment；
Fig. 2 is structural front view of the axis provided by the invention with locked swivel nut component specific embodiment；
Fig. 3 is the left view of Fig. 2；
Fig. 4 is enlarged drawing at B in Fig. 3；
Fig. 5 is the structural front view of wedge key in Fig. 2；
Fig. 6 be in Fig. 5 A to cross-sectional view；
Fig. 7 is the top view of Fig. 5；
Fig. 8 is the structural schematic diagram of swivel nut in Fig. 2；
In figure, 1- swivel nut, 11- keyway, 2- axis, 3- part to be tightened, 4- twisting slot, 5- wedge key, 51- wedge shape key lever section,
511- lozenges, 512- chip space, 52- key tongue guide section, 521- coincide plug division, 522- targeting part, 53- arc transition
Section, 6- thread tooth bottom.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The specific embodiment of the locked swivel nut component of axis of the invention, as shown in Figures 1 to 8, including is used for and corresponding axis
The swivel nut 1 of cooperation, on the swivel nut 1 Screw assembly on axis 2, and with 3 compression fit of part to be tightened on axis 2, this is to be tightened
Part can be the part that the position of the bearing assembled on axis, engine crankcase or other relative axles 2 is fixed.Such as Fig. 3 and Fig. 8 institute
Show, 1 outer ring of swivel nut is opened up there are four twisting slot 4, for positioning corresponding twisting tool, convenient for the assembly of swivel nut 1 and axis 2.Its
In his embodiment, the quantity of twisting slot can be easy to process preferably four in the present embodiment for two, three or greater than four
While, it also can satisfy the preferable positioning of twisting tool Yu twisting slot.
As shown in Figures 2 to 4, in the present embodiment, swivel nut 1 is laid with four axially extending keyways 11 in inner ring, should
Axis further includes the wedge key 5 cooperated respectively with keyway 11 with locked swivel nut component.In other embodiments, the quantity of keyway is two,
Three or it is greater than four, preferably four in the present embodiment, it is locked to part to be tightened on axis with locked swivel nut component meets the axis
While basic function, make the uniform force in the circumferential of swivel nut 1, facilitates the service life for increasing swivel nut 1.
As shown in Figures 5 to 7, in the present embodiment, wedge key 5 includes the wedge-shaped key lever section 51 at rear portion and the key tongue guiding of front
Section 52, the key tongue guide section 52 of 5 front of wedge key, which is extend into the keyway 11 of swivel nut 1, play the guiding role to wedge key 5, such as institute in Fig. 2
Show.Wedge-shaped key lever section 51 is equipped with lozenges 511, makes the wedge shape key lever section 51 in the vertical sectional shape along 5 length direction of wedge key
To be trapezoidal, the whole height of wedge-shaped key lever section 51 is less than 11 height of keyway in Fig. 4 on swivel nut 1, makes the wedging assembly completely of wedge key 5
When on the axis 2 in Fig. 1 in the keyway 11 of swivel nut 1, wedge-shaped key lever section 51 only destroys the thread part on axis 2, without weakening
The integral strength of axis 2.During lozenges 511 wedges keyway 11 with wedge key 5, the wedge arranged opposite with lozenges 511
The flat face of key 5 is gradually compressed with 11 groove bottom of keyway, until wedge key 5 fully enters in keyway 11, above-mentioned flat face is wedge
With the face that holds out against of the press cooperation of keyway 11 on key 5,11 groove bottom of keyway of wedge key 5 is that the press of cooperation is pressed with the face that holds out against
Face, top pressure face and the press effect in the face that holds out against and the interference immovable fitting of lozenges 511 and screw thread on axis, limit entire wedge
Key 5 is deviate from out of keyway 11.In the present embodiment, the radial dimension of top pressure face is greater than the thread tooth bottom 6 of 1 internal screw thread of swivel nut in Fig. 8
Radial dimension, to meet wedge key 5 during wedging keyway 11, on lozenges 511 and axis 2, the interference of screw thread, which is fastened, assembles
And it holds out against face and gradually cooperates with the press of top pressure face.In other embodiments, wedge key only includes the wedge-shaped key lever with lozenges
Section, wedge-shaped key lever section are easier to destroy the cell wall of keyway, weaken locked between swivel nut and axis when wedging in swivel nut keyway
Effect, therefore it is preferred that have the wedge key of key tongue guide section.
As shown in Figures 5 to 7, in the present embodiment, key tongue guide section 52 is flat segments, and the height of the key tongue guide section 52 is small
In the height of wedge-shaped key lever section 51, and the height of the key tongue guide section 52 is no more than 1 internal screw thread thread tooth bottom 6 of swivel nut in Fig. 8
Height apart from 11 slot bottom top pressure face of keyway avoids interference of the screw thread to key tongue guide section 52 on axis, makes key tongue guide section 52
It is relatively easily inserted into the keyway 11 of swivel nut 1, preferable guiding role is played to wedge key 5, as shown in Figure 2.Key tongue guide section
It is equipped with arc transition section 53 between 52 and wedge-shaped key lever section 51, to realize the arc transition of key tongue guide section 52 and wedge-shaped key lever section 51
Connection, the arc transition section 53 are evagination arc transition section, as shown in Figure 5.The arc transition section is interior in other embodiments
Concave arc changeover portion, in contrast, the evagination arc transition section in the present embodiment avoid the stress of wedge key 5 from concentrating, and increase wedge key
5 intensity and toughness, while being convenient for the roll forming of wedge key 5.
As shown in Fig. 3, Fig. 4 and Fig. 8, keyway 11 on swivel nut 1 is the closing in slot of the big shape of the small tripe of mouth, in the present embodiment,
The keyway 11 is specially dovetail groove, when the axis is in unused state with locked swivel nut component, the key tongue of wedge key 5 is avoided to be oriented to
Section 52 is along the radial direction abjection of swivel nut 1 out of keyway 11, and as shown in Figure 5 and Figure 6, the key tongue guide section 52 of wedge key 5 is in the circumferential
Width is greater than the width of wedge-shaped key lever section 51 in the circumferential, and the width of wedge-shaped key lever section 51 in the circumferential is less than 11 notch of keyway
Width, meet wedge-shaped key lever section 51 wedging keyway 11 in when, keyway 11 will not interfere with wedge-shaped key lever section 51.Other are implemented
In example, keyway is rectangle keyway, while wedge-shaped key lever Duan Yujian tongue guide section is of same size, which is also able to satisfy in component
Wedge-shaped key lever section will not interfere with keyway during use, but be in the axis with locked swivel nut component and be not used by state
When, swivel nut and wedge key are the two independent parts that can not be assembled, compared with the present embodiment, in the present embodiment, oat tail groove structure
Keyway 11 meets swivel nut 1 and wedge key 5 under the state that is not used by the assembled state for being not easy to split, and uses convenient for entire axis locked
The management and transport of swivel nut component.In other embodiments, which is that the small tripe of mouth is big and cross section is trapezoidal or other shapes
Structure, also meeting wedge-shaped key lever section will not interfere with keyway, and key tongue guide section is not easy to deviate from out of keyway along the radial direction of swivel nut,
Keyway 11 and wedge-shaped key lever section 51 and key tongue guide section compared with the keyway of oat tail groove structure in the present embodiment, in the present embodiment
52 overall co-ordination Du Genggao, therefore it is preferred that in the present embodiment oat tail groove structure keyway.
As shown in Fig. 4 to Fig. 7, in the present embodiment, offered in wedge-shaped key lever section 51 along wedge-shaped 51 length side of key lever section
To the chip space 512 of extension, which is specially V-shaped groove, convenient in 5 plugging in fitting of wedge key in the keyway 11 of Fig. 1
When, the thread bits that wedge key 5 destroys thread on axis and generates thread plastic deformation are discharged out of this V-shaped groove, in the present embodiment,
The depth of the V-shaped groove increases with the increase of wedge-shaped 51 height of key lever section, convenient for the discharge of thread bits and from de- in V-shaped groove
It falls.In other embodiments, which is specially the inner groovy of half-arc groove or other shapes.
As shown in figure 5 and figure 7, in the present embodiment, the end of key tongue guide section 52 is arc-shaped structure, to key tongue guide section
There is guiding role in the keyway 11 of 52 insertion swivel nuts 1, as shown in Figure 4.The end of key tongue guide section is cone in other embodiments
Shape or wedge angle, compared with the present embodiment, 52 end of arc-shaped structure key tongue guide section in the present embodiment can avoid leading in key tongue
During being oriented to 52 pairs of section entire wedge keys 5, the cell wall of keyway 11 on 52 end of key tongue guide section destruction swivel nut 1, therefore key tongue
The preferred arc-shaped structure in guide section end.
As shown in figure 5 and figure 7, in the present embodiment, have on key tongue guide section 52 and inserted with the slot bottom stapled section of dovetail groove
The identical plug division 521 connect, the cross section of the slot bottom part are rectangle, therefore this coincide, 521 cross section of plug division is rectangle, keyway
11 two sides of the plug division 521 that coincide and the cell wall of rectangle trench bottom point cooperate, and limit entire swivel nut component in the circumferential
Displacement, key tongue guide section 52 leading portion be equipped with circumferential width be less than coincide plug division 521 targeting part 522, make the key
The convenient guiding that keyway 11 is inserted into wedge key 5 of tongue guide section 52.Compared to the lesser targeting part 522 of width, width is biggish
Identical plug division 521 increases the contact area of wedge key 5 Yu keyway 11, avoids under the operating condition that axis 2 runs at high speed, and wedge key 5 is de-
It falls, increases the safety that the operating condition lower axle that runs at high speed is used with locked swivel nut component.In identical plug division 521 and targeting part
It is equipped with round-corner transition between 522, facilitates the machine-shaping of entire key tongue guide section 52.
Axis in the present embodiment is with locked swivel nut component under the state that is not used by, and as shown in Figures 1 to 8, wedge key 5 is located at
In the keyway 11 of swivel nut 1, the key tongue guide section 52 by the opening limitation wedge key 5 of keyway 11 is radial along swivel nut 1 out of keyway 11
Abjection, convenient for the placement in groups and transport of the component.Swivel nut 1 is spun on axis 2 during use, with twisting tool by the component
The thread segment of end, and with 3 compression fit of part to be tightened on axis 2, the key tongue guide section 52 of wedge key 5 is inserted into swivel nut 1
In keyway 11, then with auxiliary tool by the keyway 11 of the wedge-shaped key lever section 51 of wedge key 5 wedging swivel nut 1, until wedge-shaped key lever section
51 ends are concordant with 1 end of swivel nut, and wedge key 5 is entirely wedged into the keyway 11 of swivel nut 1 at this time, can limit 1 relative axle 2 of swivel nut
Relative rotation, make swivel nut 1 that the part to be tightened 3 on axis is locked at fixed position, during wedge key 5 assembles, on wedge key 5
Wedge-shaped key lever section 51 only destroy the thread corresponded at 1 keyway of swivel nut, 11 position on axis 2, and the intensity of entire axis 2 is not cut
Weak effect, and in 2 high-speed rotation of axis, wedge key 5 is not easy to deviate from out of keyway 11, meets the axis and is existed with locked swivel nut component
Axis 2 run at high speed during security performance.Axis in the present embodiment, need to be by tooling with swivel nut component is locked in disassembly
Or drill bit destroys the wedge key 5 in wedging keyway 11, so that wedge key 5 be taken out, replaces the part to be tightened 3 on axis 2, changes keyway
The position of thread in 11 relative axles 2, can wedge new wedge key 5, to the locked positioning of part to be tightened 3 on axis 2, if therefore the axis
Detachable with locked swivel nut component and reuse, a set of component needs to be equipped at least two wedge key 5.
Claims (10)
1. a kind of locked swivel nut component of axis, it is characterised in that: including the swivel nut for being used cooperatively with corresponding axle thread, the spiral shell
The keyway axially extended is offered at the internal screw thread of set, axis further includes the wedge being used cooperatively with keyway with locked swivel nut component
Key has on wedge key for the lozenges with the external thread section interference fastening assembly on axis, and opposite with lozenges arranges
For in swivel nut, radially with the face that holds out against of keyway press cooperation, keyway, which has, to press the top cooperated for the face that holds out against with wedge key
Pressure surface, the radial dimension of top pressure face are greater than the radial dimension of the Bottom of Thread of swivel nut internal thread hole.
2. the locked swivel nut component of axis according to claim 1, it is characterised in that: the wedge key includes rear portion equipped with institute
State the wedge-shaped key lever section of lozenges and the key tongue guide section for cooperating with the keyway guiding of front.
3. the locked swivel nut component of axis according to claim 2, it is characterised in that: have on the key tongue guide section and key
The identical grafting of slot and circumferential width are greater than the identical plug division of wedge-shaped key lever section, and it is small to be equipped with circumferential width in key tongue guide section front
Targeting part in the plug division that coincide.
4. the locked swivel nut component of axis according to claim 3, it is characterised in that: the keyway is closing in slot, the closing in
The bottom of slot has structure compatible with the identical plug division.
5. the locked swivel nut component of axis according to claim 2, it is characterised in that: the key tongue guide section and the wedge shape
Arc transition connects between key lever section.
6. the locked swivel nut component of axis according to any one of claims 2 to 5, it is characterised in that: the key tongue guide section
For flat segments, the height of the key tongue guide section is less than the height of the wedge-shaped key lever section.
7. the locked swivel nut component of axis according to any one of claims 1 to 5, it is characterised in that: the slot bottom of the keyway
Face is the top pressure face, and the flat face arranged opposite with the lozenges of the wedge key holds out against face for described.
8. the locked swivel nut component of axis according to any one of claims 2 to 5, it is characterised in that: the wedge shape key lever section
On offer chip space.
9. the locked swivel nut component of axis according to any one of claims 1 to 5, it is characterised in that: the keyway is described in
Swivel nut be arranged circumferentially at least there are two.
10. the locked swivel nut component of axis according to any one of claims 1 to 5, it is characterised in that: the swivel nut outer ring is set
There are at least two uniformly distributed twisting slots.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811198443.0A CN109281915B (en) | 2018-10-15 | 2018-10-15 | Locked thread sleeve assembly for shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811198443.0A CN109281915B (en) | 2018-10-15 | 2018-10-15 | Locked thread sleeve assembly for shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109281915A true CN109281915A (en) | 2019-01-29 |
| CN109281915B CN109281915B (en) | 2021-03-12 |
Family
ID=65176891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811198443.0A Active CN109281915B (en) | 2018-10-15 | 2018-10-15 | Locked thread sleeve assembly for shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109281915B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3472302A (en) * | 1967-12-11 | 1969-10-14 | Jose Rosan Sr | Insert with prism lock pin |
| GB1331055A (en) * | 1969-11-25 | 1973-09-19 | Telco Ltd | Locking means for engaged screwthreaded members |
| CN201027762Y (en) * | 2007-04-24 | 2008-02-27 | 中国航空动力机械研究所 | Locking threaded sleeve with key |
| CN207195381U (en) * | 2017-07-06 | 2018-04-06 | 北京宇航系统工程研究所 | A kind of high-strength high reliability locking key swivel nut of self-locking anti-loosing |
-
2018
- 2018-10-15 CN CN201811198443.0A patent/CN109281915B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3472302A (en) * | 1967-12-11 | 1969-10-14 | Jose Rosan Sr | Insert with prism lock pin |
| GB1331055A (en) * | 1969-11-25 | 1973-09-19 | Telco Ltd | Locking means for engaged screwthreaded members |
| CN201027762Y (en) * | 2007-04-24 | 2008-02-27 | 中国航空动力机械研究所 | Locking threaded sleeve with key |
| CN207195381U (en) * | 2017-07-06 | 2018-04-06 | 北京宇航系统工程研究所 | A kind of high-strength high reliability locking key swivel nut of self-locking anti-loosing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109281915B (en) | 2021-03-12 |
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