CN104595320B - A kind of axial positioning component with interior fit clearance and axially localization method - Google Patents
A kind of axial positioning component with interior fit clearance and axially localization method Download PDFInfo
- Publication number
- CN104595320B CN104595320B CN201510048717.8A CN201510048717A CN104595320B CN 104595320 B CN104595320 B CN 104595320B CN 201510048717 A CN201510048717 A CN 201510048717A CN 104595320 B CN104595320 B CN 104595320B
- Authority
- CN
- China
- Prior art keywords
- pump shaft
- retaining ring
- snap ring
- half snap
- point
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000004807 localization Effects 0.000 title claims abstract description 12
- 230000006378 damage Effects 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000002929 anti-fatigue Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000007704 transition 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
- F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Reciprocating Pumps (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
The invention discloses a kind of axial positioning component with interior fit clearance and axial localization method thereof, a pair point of half snap ring is arranged on the annular groove of pump shaft, make this that point annulus diameter that half snap ring is formed is more than the annular groove diameter of this pump shaft simultaneously；Point half snap ring can be eliminated pump shaft is caused the probability of fretting corrosion, strengthen the fatigue resistance of pump shaft, improve the security reliability of pump.Retaining ring for shaft shoulder is nested with at pump shaft and this is on point half snap ring, the degree of depth that the maximum moving distance of design retaining ring for shaft shoulder is arranged in rotatable parts less than pin, the degree of depth that design pin is arranged in rotatable parts simultaneously is nested with in this degree of depth to point half snap ring less than retaining ring for shaft shoulder；Can eliminate retaining ring for shaft shoulder positions the destruction to pump shaft surface.The present invention can conveniently dismantle positioning component simultaneously, therefore reduces repeated disassembled and assembled and causes the probability to pump shaft surface damage, the rotatable parts being simultaneously achieved on the pump shaft axial location when bearing larger axis to power.
Description
Technical field
The present invention relates to axial positioning component in nuclear power generating equipment, be specifically related to a kind of axial positioning component with interior fit clearance and axial localization method thereof.
Background technology
When the rotatable parts of pump axially position on axle, usual one end positions by the shaft shoulder, and the other end has several ways to select.
Under normal circumstances, the location mode that one section of screw thread coordinates with special nut, or the location mode that axle head thread mill drilling coordinates with special bolt can be processed on axle with selection；The location mode of clip principle can also be selected.When being not subject to axial force or bearing relatively small axial power, use clip principle location mode proper.Use the location mode that on axle, screw thread coordinates with special nut, or head screwed hole joins the mode of bolt, bigger axial force can be born, the latter is suitable only for the location near axle head rotatable parts, the former can position with the rotatable parts in countershaft upper centre position, but often produces problems with:
1, operationally can produce certain amount of deflection due to pump shaft, the contact site of its positioning threads easily produces fretting corrosion, causes the fatigue failure of pump shaft, has influence on the functions of the equipments of pump.
2, for bearing the larger axis screw thread to power, in the case of repeated disassembled and assembled, screw thread damage is easily caused.
3, special nut is locking, and particularly with there is the situation of axial gap between special nut and rotatable parts, structure is complicated, and dismounting is difficult to..
Summary of the invention
It is an object of the invention to provide a kind of axial positioning component with interior fit clearance and axial localization method thereof, a pair point of half snap ring is arranged on the annular groove of pump shaft, makes this that point annulus diameter that half snap ring is formed is more than the annular groove diameter of this pump shaft simultaneously；Point half snap ring can be eliminated pump shaft is caused the probability of fretting corrosion, strengthen the fatigue resistance of pump shaft, improve the security reliability of pump.Retaining ring for shaft shoulder is nested with at pump shaft and this is on point half snap ring, the degree of depth that the maximum moving distance of design retaining ring for shaft shoulder is arranged in rotatable parts less than pin, the degree of depth that design pin is arranged in rotatable parts simultaneously is nested with in this degree of depth to point half snap ring less than retaining ring for shaft shoulder；Can eliminate retaining ring for shaft shoulder positions the destruction to pump shaft surface.The present invention can conveniently dismantle positioning component simultaneously, therefore reduces repeated disassembled and assembled and causes the probability to pump shaft surface damage, the rotatable parts being simultaneously achieved on the pump shaft axial location when bearing larger axis to power.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
A kind of axial positioning component with interior fit clearance, is nested with on pump shaft and is mutually matched with the rotatable parts being nested with on this pump shaft, be characterized in, this positioning component comprises:
A pair point of half snap ring, seamless spliced connection, it is mounted on the annular groove of described pump shaft；
Retaining ring for shaft shoulder, one end of described retaining ring for shaft shoulder is nested with on a pair point of described half snap ring, and the other end of this retaining ring for shaft shoulder is nested with on this pump shaft；
At least one pin, described pin one end is arranged in described retaining ring for shaft shoulder, and this pin other end is arranged in described rotatable parts, is connected with rotatable parts by described retaining ring for shaft shoulder..
Preferably, one end of at least one described pin and described retaining ring for shaft shoulder interference fit, the other end of this pin and described rotatable parts matched in clearance.
Preferably, each described point half snap ring is semi-circular shape, and the diameter of this point half snap ring is more than the annular groove diameter of described pump shaft.
Preferably, each described point half snap ring inwall dual-side is provided with chamfering, and each described point of half snap ring inwall chamfering circular diameter is more than the transition circle diameter of the annular groove root of described pump shaft.
Preferably, the radial clearance between described point of half snap ring and the annular groove of described pump shaft is more than the deflection deformation maximum of described pump shaft.
Preferably, described retaining ring for shaft shoulder cross section is L-shaped；Match with the pair of point of half snap ring in one end that this retaining ring for shaft shoulder internal diameter is big；Match with described pump shaft in one end that this retaining ring for shaft shoulder internal diameter is little.
Preferably, described rotatable parts are nested with on the pump shaft of the side of described annular groove, and surrounding jacket assembly is nested with the pump shaft at this annular groove opposite side.
Distance between described retaining ring for shaft shoulder and described surrounding jacket assembly is arranged on the degree of depth in described rotatable parts less than described pin；
The degree of depth that this pin is arranged in described rotatable parts mates the degree of depth less than described retaining ring for shaft shoulder and the pair of point of half snap ring.
The localization method of a kind of axial positioning component using interior fit clearance, is characterized in, this localization method comprises the steps of:
S1, uses the annular groove periphery that seamless connecting method is arranged on pump shaft by the pair of point of half snap ring；Make this internal diameter annular groove diameter more than described pump shaft to dividing half snap ring spliced；
S2, is nested with one end little for described retaining ring for shaft shoulder internal diameter on pump shaft, is nested with one end big for this retaining ring for shaft shoulder internal diameter on the pair of point of half snap ring outer wall；
S3, mates setting by one end interference vertically big with described retaining ring for shaft shoulder internal diameter for one end of described pin；
S4, by the other end of described pin and described rotatable parts matched in clearance.
The present invention compared with prior art has the advantage that
A kind of axial positioning component with interior fit clearance of present invention offer and axial localization method thereof, it is possible to eliminate point half snap ring and pump shaft is caused the probability of fretting corrosion, strengthen the anti-fatigue performance of pump shaft, to improve the security reliability of pump.Can eliminate retaining ring for shaft shoulder positions the destruction to pump shaft surface.Further, easy disassembly, reduce repeated disassembled and assembled and cause the probability to pump shaft surface damage, the rotatable parts being simultaneously achieved on the pump shaft axial location when bearing larger axis to power.
Accompanying drawing explanation
Fig. 1 is a kind of axial positioning component overall structure partial sectional view with interior fit clearance of the present invention.
Fig. 2 is the embodiment schematic diagram of a kind of axial positioning component with interior fit clearance of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As it is shown in figure 1, a kind of axial positioning component with interior fit clearance, being nested with on pump shaft 100 and be mutually matched with the rotatable parts 200 being nested with on this pump shaft 100, this positioning component comprises: a pair point of half snap ring 10, retaining ring for shaft shoulder 20 and at least one pin 30.
Wherein, around the annular groove 110 that a pair point of half snap ring 10 uses seamless spliced connection to be arranged on pump shaft 100.One end of retaining ring for shaft shoulder 20 is nested with at this on point half snap ring 10, and the other end of this retaining ring for shaft shoulder 20 is nested with on this pump shaft 100.One end of at least one pin 30 is arranged in retaining ring for shaft shoulder 20, and this pin 30 other end is arranged in rotatable parts 200, is connected with rotatable parts 200 by retaining ring for shaft shoulder 20.
In the present invention, each point of half snap ring 10 is in semi-circular shape, and the internal diameter of this point half snap ring 10 is more than annular groove 110 diameter of axle of pump shaft 100.Each point of half snap ring 10 inwall dual-side is provided with chamfering, and each point of half snap ring 10 inwall chamfering circular diameter is more than the knuckle diameter of annular groove 110 root of pump shaft 100.
As shown in Figure 1 and Figure 2, the localization method of a kind of axial positioning component using interior fit clearance, this localization method comprises the steps of:
S1, annular groove 110 periphery using seamless connecting method to be arranged on pump shaft 100 a pair point of half snap ring 10；Make this internal diameter annular groove 110 diameter of axle more than pump shaft 100 to dividing half snap ring 10 spliced.
As shown in Figure 2, the present invention is by passing through seamless spliced by the two ends of a pair point of half snap ring 10, guarantee that point Mosaic face of half snap ring 10 is seamless, make this that internal diameter a of spliced point of half snap ring 10 is more than the diameter of axle b of the annular groove of pump shaft 100 simultaneously, it is thus possible to guarantee that this exists gap to the inwall of point half snap ring 10 with the outer peripheral face of pump shaft 100, and do not contact.
S2, is nested with one end little for retaining ring for shaft shoulder 20 internal diameter on pump shaft 100, is nested with one end big for retaining ring for shaft shoulder 20 internal diameter on a pair point of half snap ring 10 outer wall.
In the present invention, retaining ring for shaft shoulder 20 cross section is L-shaped；Match with a pair point of half snap ring 10 in one end that this retaining ring for shaft shoulder 20 internal diameter is big；Match with pump shaft 100 in one end that this retaining ring for shaft shoulder 20 internal diameter is little.
The radial position of point half snap ring 10 is positioned with retaining ring for shaft shoulder 20 inwall by this by its outer wall, location fit face M1 as shown in Figure 1.Retaining ring for shaft shoulder 20 relies on and positions with the wall contacts face (being set to as shown in Figure 1 coordinates face M2) of pump shaft 100.
S3, carries out interference vertically by one end big with retaining ring for shaft shoulder 20 internal diameter for one end of pin 30 and mates setting.
S4, by the other end of pin 30 and rotatable parts 200 matched in clearance.
As it is shown in figure 1, in the present embodiment, the internal diameter of each point of half snap ring 10 is a, annular groove 110 diameter of axle of pump shaft 100 is b, wherein a > b.The snap ring inwall dual-side being made up of a pair point of half snap ring 10 is respectively equipped with chamfering, and the chamfer dimesion of snap ring is more than the knuckle size of annular groove 110 root.
In the present invention, divide the deflection deformation maximum more than pump shaft 100 of the radial clearance between half snap ring 10 and the annular groove 110 of pump shaft 100.
In pump shaft is actually used, a pair point of half snap ring 10, retaining ring for shaft shoulder 20 along with rotatable parts 200, pump shaft 100 rotate time, pump shaft 100 can produce certain amount of deflection, owing to dividing the deflection deformation maximum more than pump shaft 100 of the clearance distance d between half snap ring 10 and the annular groove 110 of pump shaft 100, then point half snap ring 10 will not be contacted by this with pump shaft 100, can effectively avoid pump shaft 100 to produce fretting corrosion, improve the safety of pump shaft 100, extend the service life of pump shaft 100.
As it is shown in figure 1, rotatable parts 200 are nested with on the pump shaft 100 of the side of annular groove 110, surrounding jacket assembly 300 is nested with the pump shaft 100 at this annular groove 110 opposite side.
Distance L2 between retaining ring for shaft shoulder 20 and surrounding jacket assembly 300 is arranged on degree of depth L3 in rotatable parts 200 less than pin 30.Degree of depth L3 that pin 30 is arranged in rotatable parts 200 mates degree of depth L1 less than retaining ring for shaft shoulder 20 and a pair point of half snap ring 10.
In the present embodiment, the little 0.2mm-1mm of axial width of L1 score half snap ring 10；L2 minimum can be 0, L1 > L3 > L2, namely the length of L3 is between L1, L2.
In the present invention, when rotatable parts 200 rotate along with pump shaft 100, retaining ring for shaft shoulder 20 is axially moveable.When this retaining ring for shaft shoulder 20 contacts with surrounding jacket assembly 300, the axial displacement of this retaining ring for shaft shoulder 20 reaches distance L2 between maximum, namely this retaining ring for shaft shoulder 20 and surrounding jacket assembly 300.Owing to the axial displacement L2 of this retaining ring for shaft shoulder 20 is arranged on distance L3 in rotatable parts 200 less than pin 30, it is possible to be effectively prevented from retaining ring for shaft shoulder 20 and separate with rotatable parts 200.
When retaining ring for shaft shoulder 20 is axially moveable, owing to maximum axial displacement L2 of retaining ring for shaft shoulder 20 mates degree of depth L1 less than retaining ring for shaft shoulder 20 and a pair point of half snap ring 10, so retaining ring for shaft shoulder 20 and a pair point of half snap ring 10 the most still have lap, and along with rotatable parts 200 rotate together with pump shaft 100.
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that the description above is not considered as limitation of the present invention.After those skilled in the art have read foregoing, multiple amendment and replacement for the present invention all will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (7)
1. there is an axial positioning component for interior fit clearance, be nested with upper at pump shaft (100) and be mutually matched with the rotatable parts (200) being nested with on this pump shaft (100), it is characterised in that this positioning component comprises:
A pair point of half snap ring (10), seamless spliced connection, it is arranged on the annular groove (110) of described pump shaft (100)；
Retaining ring for shaft shoulder (20), one end of described retaining ring for shaft shoulder (20) is nested with on a pair point of described half snap ring (10), and the other end of this retaining ring for shaft shoulder (20) is nested with on this pump shaft (100)；
At least one pin (30), described pin (30) one end is arranged in described retaining ring for shaft shoulder (20), with retaining ring for shaft shoulder (20) interference fit, this pin (30) other end is arranged in described rotatable parts (200), with rotatable parts (200) matched in clearance, described retaining ring for shaft shoulder (20) is connected with rotatable parts (200).
There is the axial positioning component of interior fit clearance the most as claimed in claim 1, it is characterised in that each described point of half snap ring (10) is in semi-circular shape, and the internal diameter of this point half snap ring (10) is more than annular groove (110) diameter of axle of described pump shaft (100).
There is the axial positioning component of interior fit clearance the most as claimed in claim 2, it is characterized in that, each described point half snap ring (10) inwall dual-side is provided with chamfering, and each described point of half snap ring (10) inwall chamfering circular diameter is more than the knuckle diameter of described annular groove (110) root.
There is the axial positioning component of interior fit clearance the most as claimed in claim 3, it is characterised in that the radial clearance between described point of half snap ring (10) and described annular groove (110) is more than the deflection deformation maximum of described pump shaft (100).
There is the axial positioning component of interior fit clearance the most as claimed in claim 1, it is characterised in that described retaining ring for shaft shoulder (20) cross section is L-shaped；Match with the outer wall of the pair of point of half snap ring (10) in one end that this retaining ring for shaft shoulder (20) internal diameter is big；Match with described pump shaft (100) in one end that this retaining ring for shaft shoulder (20) internal diameter is little.
There is the axial positioning component of interior fit clearance the most as claimed in claim 1, it is characterized in that, described rotatable parts (200) are nested with on the pump shaft (100) of the side of described annular groove (110), and surrounding jacket assembly (300) is nested with on the pump shaft (100) of this annular groove (110) opposite side；
Distance between described retaining ring for shaft shoulder (20) and described surrounding jacket assembly (300) is arranged on the degree of depth in described rotatable parts (200) less than described pin (30)；
The degree of depth that this pin (30) is arranged in described rotatable parts (200) axially mates the degree of depth less than described retaining ring for shaft shoulder (20) and the pair of point of half snap ring (10).
7. the localization method of the axial positioning component using interior fit clearance, it is characterised in that this localization method comprises the steps of:
S1, annular groove (110) periphery using seamless connecting method to be arranged on pump shaft (100) a pair point of half snap ring (10)；Make this internal diameter annular groove (110) diameter of axle more than described pump shaft (100) to dividing half snap ring (10) spliced；
S2, is nested with one end little for retaining ring for shaft shoulder (20) internal diameter on pump shaft (100)；One end big for this retaining ring for shaft shoulder (20) internal diameter is nested with on the pair of point of half snap ring (10) outer wall,
S3, mates setting by one end interference vertically big with described retaining ring for shaft shoulder (20) internal diameter for one end of pin (30)；
S4, by the other end of described pin (30) and rotatable parts (200) matched in clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510048717.8A CN104595320B (en) | 2015-01-30 | 2015-01-30 | A kind of axial positioning component with interior fit clearance and axially localization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510048717.8A CN104595320B (en) | 2015-01-30 | 2015-01-30 | A kind of axial positioning component with interior fit clearance and axially localization method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104595320A CN104595320A (en) | 2015-05-06 |
| CN104595320B true CN104595320B (en) | 2016-10-26 |
Family
ID=53121291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510048717.8A Active CN104595320B (en) | 2015-01-30 | 2015-01-30 | A kind of axial positioning component with interior fit clearance and axially localization method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104595320B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854601A (en) * | 2018-11-29 | 2019-06-07 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of ring type locking mechanism |
| US11920638B2 (en) | 2020-05-21 | 2024-03-05 | Hamilton Sundstrand Corporation | Generator shaft assembly |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2508677C3 (en) * | 1975-02-28 | 1979-05-10 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | Snap ring lock |
| DE4007942C1 (en) * | 1990-03-13 | 1990-09-13 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | Securing component on rotating shaft - involves retaining ring to avoid expansion of circlip at high shaft speed |
| CN2132021Y (en) * | 1992-06-22 | 1993-05-05 | 隆昌祝 | Suspended thrust bearing for hydraulic turbine generaotr |
| DE4441485A1 (en) * | 1994-11-22 | 1996-05-23 | Grohe Armaturen Friedrich | Valve spindle locking ring |
| CN202326603U (en) * | 2011-11-16 | 2012-07-11 | 东风汽车股份有限公司 | Shaft part fixing and adjusting ring |
| CN203335574U (en) * | 2013-05-15 | 2013-12-11 | 苏州萃智新技术开发有限公司 | Shaft positioning device |
| CN204591924U (en) * | 2015-01-30 | 2015-08-26 | 上海电气凯士比核电泵阀有限公司 | A kind of axially locating assembly with interior matching gap |
-
2015
- 2015-01-30 CN CN201510048717.8A patent/CN104595320B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104595320A (en) | 2015-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106715839B (en) | Extract sleeve out | |
| US20170022978A1 (en) | System for reducing maintenance frequency for bolts and nuts of wind turbine | |
| US20160123388A1 (en) | Rotating machine with at least one active magnetic bearing and spaced auxiliary rolling bearings | |
| CN104595320B (en) | A kind of axial positioning component with interior fit clearance and axially localization method | |
| US9829199B2 (en) | Flange with curved contact surface | |
| US20180142730A1 (en) | Rolling bearing | |
| CN204591924U (en) | A kind of axially locating assembly with interior matching gap | |
| US20130049357A1 (en) | Swivel device | |
| EP3001059A1 (en) | Plug assembly, rolling bearing comprising such plug assembly and machine comprising such rolling bearing | |
| CN109940526B (en) | Conical surface centering structure and assembly method | |
| CN103807300A (en) | Bearing limiting system and bearing limiting method | |
| US9145922B2 (en) | Rotary support including bearings | |
| CN202811847U (en) | Radial hydrodynamic sliding bearing | |
| TW201319427A (en) | Ball screw and assembly method therefor | |
| CN214789551U (en) | Oil pipe assembly | |
| CN212177067U (en) | Integrated drill rod and drilling tool slope sleeve moving system | |
| CN204301705U (en) | A kind of linear movement pick-up miniaturization swivel link shelf structure | |
| CN203293018U (en) | Oil atomizer needle valve body external grinding locating tool | |
| CN206457057U (en) | The large-scale roller of high rigidity | |
| CN205315576U (en) | Snail wind spring seat | |
| CN204061548U (en) | A kind of outer ring separated type deep groove ball bearing | |
| CN103624287A (en) | Workpiece positioning tool for machine tool | |
| CN221074935U (en) | Round nut locking device for planetary reducer | |
| CN205478653U (en) | Novel piston head connection structure | |
| CN107166013A (en) | The gear structure of adjustable backlash |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |