CN108412900A - Bearing and its method for dismounting - Google Patents

Bearing and its method for dismounting Download PDF

Info

Publication number
CN108412900A
CN108412900A CN201810358561.7A CN201810358561A CN108412900A CN 108412900 A CN108412900 A CN 108412900A CN 201810358561 A CN201810358561 A CN 201810358561A CN 108412900 A CN108412900 A CN 108412900A
Authority
CN
China
Prior art keywords
trepanning
bearing
cavity
piston
working media
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.)
Withdrawn
Application number
CN201810358561.7A
Other languages
Chinese (zh)
Inventor
不公告发明人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Love Education Science And Technology Co Ltd
Original Assignee
Changzhou Love Education Science And Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changzhou Love Education Science And Technology Co Ltd filed Critical Changzhou Love Education Science And Technology Co Ltd
Priority to CN201810358561.7A priority Critical patent/CN108412900A/en
Publication of CN108412900A publication Critical patent/CN108412900A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/58Raceways; Race rings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00Assembling bearings
    • F16C43/04Assembling rolling-contact bearings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

The invention discloses bearing and its method for dismounting.Pass through the working media inlet A (1b) and working media inlet B (4b) and trepanning A (1c), trepanning B (4c), piston (5), the fixinig plate A (8) being connect with piston (5), fixinig plate B (6) and elastomer (7) that cavity A (1a) and cavity B (4a) is respectively set on outer ring (1) and inner ring (4), communicates with respective chamber.Pressure by changing fluid working medium so that fixinig plate A (8) holds out against or loosen bearing mounting hole hole wall, axis is held or loosened to fixinig plate (6) tightly, to be conveniently accomplished the fixation and dismounting of bearing, simultaneously after using the higher working media of specific heat, the heat generated when more bearing workings can also be absorbed, to make bearing preferably be cooled down.

Description

Bearing and its method for dismounting
Technical field
The present invention relates to field of bearings, more particularly to bearing and its method for dismounting.
Background technology
Rolling bearing has application more as standard component in the bearing of various rotatable parts.But when current bearing installation by It is interference fit in bearing inner race and axis, is to be installed by way of tapping or being pressed into forcing press under normal circumstances, also has Its inner ring swell is set then to be inserted on axis again bearing heating.The handling of bearing are all very inconvenient in a word.
Invention content
In order to overcome drawbacks described above and the insufficient present invention to provide following technical scheme:A kind of bearing easy to use, it is described Bearing includes outer ring, rolling element, retainer, inner ring, and the outer ring is internally provided with a cavity A, the cycle surface be equipped with The working media inlet A that the cavity A is connected, the working media inlet A can be closed, outermost on the outer ring Side wall is equipped with trepanning A, and the trepanning A is communicated with the cavity A, described equipped with matched piston in the trepanning A Piston connects a fixinig plate A, and the inner ring is internally provided with a cavity B, and the inner ring end face is equipped with to be connected with the cavity B Working media inlet B, the working media inlet B can close, be equipped with and open closest to the side wall of axis on the inner ring Hole B, the trepanning B is identical as the trepanning A sizes, and the trepanning B is communicated with the cavity B, be equipped in the trepanning B and its The piston to match, the piston are flexibly connected a fixinig plate B.
When installation, first by bearing holder (housing, cover) on axis so that be not arranged on bearing inner race the top surface of working media inlet with Shaft shoulder face overlaps.Then the working media for injecting high pressure into cavity B by the working media inlet B, since work is situated between The pressure of matter ejects piston 5, and fixinig plate B holds axis tightly so that bearing is fixed on axis, finally seals working media inlet B It closes, then injects the working media of high pressure into cavity A by the working media inlet A, since the pressure of working media will Piston 5 ejects, and fixinig plate A is held out against on the hole wall of bearing mounting hole, to make bearing be fixed on bearing block.It, will when dismounting Working media inlet B is opened, and the high-pressure working medium in cavity B is extracted out so that cavity pressure is released, piston driving is solid Stator B loosens axis, will then open working media inlet A, and the high-pressure working medium in cavity A is extracted out so that intracavitary pressure Power is released, and piston driving fixinig plate A loosens the hole wall of bearing mounting hole, so as to easily unload bearing.
Preferably, on the outer ring outermost side wall be equipped with it is several to cavity A boss A outstanding, it is described Boss A is equipped with the side wall of trepanning A, the trepanning A through the boss A and its place, and is communicated with the cavity A, described On inner ring trepanning B, institute are equipped with to cavity B boss B outstanding, the boss B closest to the side wall of axis equipped with several Side walls of the trepanning B through the boss B and its place is stated, and is communicated with the cavity B.
Preferably, the piston is equipped with a piston rod, an elastomer sleeve is located on the piston rod, the trepanning A It is inside provided with and closes the trepanning A just with its match sprue A, the sprue A, the sprue A is described equipped with through-hole A Piston rod is pierced by the connection fixinig plate A from the through-hole A, and piston rod is connected on one end of the elastomer and the piston End face contact, the other end withstands on the sprue A, is provided in the trepanning B proper with its match sprue B, the sprue B The trepanning B is closed well, and the sprue B is equipped with through-hole B, and the piston rod is pierced by from the through-hole B described in flexible connection Fixinig plate B, one end of the elastomer are contacted with the end face for connecting piston rod on the piston, and the other end withstands on the sprue B On.
Preferably, the end that the piston rod of the piston is arranged on the outer ring is equipped with bulb A, it is described swollen Big portion A is internally provided with a spherically-shaped cavity, and the hole is equipped on the lower face of the bulb A and is open, on the fixinig plate A It is fixedly connected with a spherical bulb B ' with top of the immediate surface in the outer ring equipped with protruding portion A, the protruding portion A, The diameter of the bulb B ' is not more than the diameter in the hole, and the diameter of bulb B ' is more than the lower faces the bulb A On opening on point-to-point transmission maximum distance, in the embedded hole the bulb B ', the protruding portion A be inserted into described in expand In opening on the portion lower faces A, and can be freely movable, it is equipped with and protrudes closest to the surface of the inner ring on the fixinig plate B The diameter that the top of portion B, the protruding portion B are fixedly connected with spherical bulb a B ", the bulb B " is not more than the hole Diameter, and the diameter of bulb B " be more than the lower faces the bulb A on opening on point-to-point transmission maximum distance, it is described swollen In the big embedded holes portion B ", the protruding portion B is inserted into the opening on the lower faces the bulb A, and can freely activity.
Preferably, the elastomer can be one of spring or rubber block.
Preferably, the shape of the fixinig plate A and the fixinig plate B on the radial section of bearing is sector, institute The end face for the outer ring that working media inlet A is not protruded where it is stated, the working media inlet B is not protruded where it The inner ring end face.
Compared with prior art, the invention has the advantages that:By the way that cavity A is respectively set on outer ring and inner ring With cavity B, the working media inlet A communicated with respective chamber and working media inlet B and trepanning A, trepanning B, piston, with Fixinig plate A, fixinig plate B and the elastomer of piston connection.By change fluid working medium pressure make fixinig plate A hold out against or Loosen bearing mounting hole hole wall, fixinig plate holding or loosen axis, to be conveniently accomplished the fixation and dismounting of bearing, while adopting After the higher working media of specific heat, moreover it is possible to the heat generated when more bearing workings is absorbed, to make bearing obtain more preferably Cooling.
Description of the drawings
Fig. 1 is the front view when bearing in embodiment of the present invention is mounted on an axle.
Fig. 2 is the front view when bearing in embodiment of the present invention is not installed on axis.
Fig. 3 is to face full sectional view when the bearing in embodiment of the present invention is not installed on axis.
Fig. 4 is the portions A enlarged drawing.
Fig. 5 is the portions B enlarged drawing.
Fig. 6 is that piston faces full sectional view in the bearing in embodiment of the present invention.
Fig. 7 is that fixinig plate B faces full sectional view in the bearing in embodiment of the present invention.
Fig. 8 is that fixinig plate A faces full sectional view in the bearing in embodiment of the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings, it elaborates to the specific implementation mode of the present invention.A kind of bearing easy to use, it is described Bearing includes outer ring 1, rolling element 2, retainer 3, inner ring 4, and the outer ring 1 is internally provided with a cavity A1a, 1 end face of the outer ring It is equipped with the working media inlet A1b being connected with the cavity A1a, the working media inlet A1b can be closed, and institute State the end face for the outer ring 1 that working media inlet A1b is not protruded where it, the outer ring(1)On upper outermost side wall Equipped with trepanning A(1c), the trepanning A(1c)With the cavity A(1a)It communicates, the trepanning A(1c)Interior be equipped with matches with it Piston(5), the piston(5)Connect a fixinig plate A(8), set that there are six to described on the outer ring 1 on outermost side wall Cavity A1a boss A1d outstanding, the boss A1d be equipped with trepanning A1c, the trepanning A1c through the boss A1d and its The side wall at place, and communicated with the cavity A1a, matched piston 5, the piston 5 are equipped in each trepanning A1c It is equipped with a piston rod 5a, a spring 7 is set on the piston rod 5a, is also threaded in each trepanning A1c and its phase Matched sprue A1e, the sprue A1e close the trepanning A1c just, and the sprue A1e is equipped with through-hole A, the piston Bar 5a is pierced by from the through-hole A, and one end of the spring 7 is contacted with the end face for connecting piston rod 5a on the piston 5, another End is withstood on the sprue A1e, and the end of the piston rod 5a is internally provided with a ball equipped with bulb A5b, the bulb A5b Shape hole 5c, the hole 5c are equipped on the lower face of the bulb A5b and are open, on the fixinig plate A8 and outer ring Top of the 1 immediate surface equipped with protruding portion A8a, the protruding portion A8a is fixedly connected with spherical shape bulb B ' 8c, described The diameter of bulb B ' 8c is not more than the diameter of the hole 5c, and the diameter of bulb B ' 8c is more than under the bulb A5b The maximum distance of point-to-point transmission in opening on end face, the bulb B ' 8c are embedded in the hole 5c, and the protruding portion A8a is inserted Enter in the opening on the lower faces the bulb A5b, and can be freely movable,
The inner ring 4 is internally provided with a cavity B4a, and 4 end face of the inner ring is equipped with the work being connected with the cavity B4a and is situated between Where matter inlet B4b, the working media inlet B4b can be closed, and the working media inlet B4b does not protrude it The end face of the inner ring 4, closest to setting on the side wall of fixing axle, there are six outstanding convex to the cavity B4a on the inner ring 4 The side wall of trepanning B4c, the trepanning B4c through the boss B4d and its place is equipped on platform B4d, each boss B4d, and It is communicated with the cavity B4a, matched piston 5 is equipped in each trepanning B4c, piston is provided on the piston 5 Bar 5a, a spring 7 are sheathed on the piston rod 5a, be also threaded in each trepanning B4c with its sprue B4e that matches, The sprue B4e closes the trepanning B4c just, and the sprue B4e is equipped with through-hole B, the piston rod 5a from the through-hole B In be pierced by, one end of the spring 7 is contacted with the end face for connecting piston rod 5a on the piston 5, and the other end withstands on the sprue On B4e, the end of the piston rod 5a is equipped with bulb A5b, and the bulb A5b is internally provided with a spherically-shaped cavity 5c, described Hole 5c is equipped with opening on the lower face of the bulb A5b, and for holding axis tightly, the fixinig plate B6's six fixinig plate B6 exists Shape on the radial section of bearing is sector, and the fixinig plate B6 is equipped with protruding portion B6a, the top of the protruding portion B6a The diameter for being fixedly connected with spherical shape bulb B " 6b, the bulb B " 6b is not more than the diameter of the hole 5c, and bulb The diameter of B " 6b is more than the maximum distance of point-to-point transmission in the opening on the lower faces the bulb A5b, and the bulb B " 6b are embedding Enter in the hole 5c, the protruding portion B6a is inserted into the opening on the lower faces the bulb A5b, and can freely activity.
When installation, first by bearing holder (housing, cover) on axis, since the effect of spring 7 makes piston 5 be received in the trepanning A1c and institute It states in trepanning B4c, therefore bearing can be very easily sleeved on axis so that working media inlet 4b is not set on bearing inner race 4 Top surface overlapped with shaft shoulder face.Then the hydraulic oil of high pressure is injected into cavity B4a by the working media inlet B4b, Since the pressure of hydraulic oil ejects piston 5, spring 7 is compressed, and six fixinig plates 6 hold axis tightly so that and bearing is fixed on axis, Then working media inlet 4b is closed, high pressure is then injected into cavity A1a by the working media inlet A1b Hydraulic oil, since the pressure of hydraulic oil ejects piston 5, spring 7 is compressed, and six fixinig plate A are held out against in bearing mounting hole On hole wall, to make bearing be fixed on bearing block.When dismounting, working media inlet B4b is opened, it will be in cavity B4a High pressure liquid pressure oil is extracted out so that cavity pressure is released, and piston 5 is withdrawn under the action of spring 7 in trepanning B4c, drives fixinig plate B6 loosens axis, then opens working media inlet A1b, and the high pressure liquid pressure oil in cavity A1a is extracted out so that cavity pressure It is released, piston 5 is withdrawn under the action of spring 7 in trepanning A1c, and fixinig plate A8 is driven to loosen bearing mounting hole hole wall, to Easily bearing can be unloaded.
Compared with prior art, the invention has the advantages that:By the way that chamber is respectively set on outer ring 1 and inner ring 4 Body A1a and cavity B4a, the working media inlet A1b communicated with respective chamber and working media inlet B4b and trepanning A1c, Trepanning B4c, piston 5, the fixinig plate A8 being connect with piston 5, fixinig plate B6 and elastomer 7.By changing fluid working medium Pressure so that fixinig plate A8 holds out against or loosen bearing mounting hole hole wall, fixinig plate 6 is held tightly or loosens axis, to be conveniently accomplished axis The fixation and dismounting held, while using after the higher working media of specific heat, moreover it is possible to absorb and be generated when more bearing workings Heat, to make bearing preferably be cooled down.
Above to the present invention have been described in detail, but the invention is not limited in specific embodiment parties described herein Formula.It will be appreciated by those skilled in the art that in the case without departing from the scope of the present invention, other changes and deformation can be made.For example, The elastomer 7 can also be that rubber block, protection scope of the present invention are defined by the following claims.

Claims (1)

1. a kind of method for dismounting of bearing easy to use, the bearing includes outer ring(1), rolling element(2), retainer(3), it is interior Circle(4), which is characterized in that the outer ring(1)It is internally provided with a cavity A(1a), the outer ring(1)End face is equipped with and the chamber Body A(1a)The working media inlet A being connected(1b), the working media inlet A(1b)It can close, the outer ring(1) Upper outermost side wall is equipped with trepanning A(1c), the trepanning A(1c)With the cavity A(1a)It communicates, the trepanning A(1c) It is interior to be equipped with matched piston(5), the piston(5)Connect a fixinig plate A(8), the inner ring(4)It is internally provided with a chamber Body B(4a), the inner ring(4)End face is equipped with and the cavity B(4a)The working media inlet B being connected(4b), described Working media inlet B(4b)It can close, the inner ring(4)On closest to axis side wall be equipped with trepanning B(4c), the trepanning B(4c)With the trepanning A(1c)Size is identical, the trepanning B(4c)With the cavity B(4a)It communicates, the trepanning B(4c)It is interior Equipped with matched piston(5), the piston(5)It is flexibly connected a fixinig plate B(6);
The method for dismounting, including:When dismounting, working media inlet B is opened, by the high-pressure working medium in cavity B So that cavity pressure is released, piston driving fixinig plate B loosens axis, will then open working media inlet A, by chamber for extraction High-pressure working medium in body A is extracted out so that cavity pressure is released, and piston driving fixinig plate A loosens the hole of bearing mounting hole Wall, to unload bearing.
CN201810358561.7A 2015-12-28 2015-12-28 Bearing and its method for dismounting Withdrawn CN108412900A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810358561.7A CN108412900A (en) 2015-12-28 2015-12-28 Bearing and its method for dismounting

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510993411.XA CN105422634B (en) 2015-12-28 2015-12-28 A kind of bearing easy to use
CN201810358561.7A CN108412900A (en) 2015-12-28 2015-12-28 Bearing and its method for dismounting

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201510993411.XA Division CN105422634B (en) 2015-12-28 2015-12-28 A kind of bearing easy to use

Publications (1)

Publication Number Publication Date
CN108412900A true CN108412900A (en) 2018-08-17

Family

ID=55501087

Family Applications (7)

Application Number Title Priority Date Filing Date
CN201810358547.7A Withdrawn CN108561427A (en) 2015-12-28 2015-12-28 A kind of bearing
CN201810358577.8A Withdrawn CN108561438A (en) 2015-12-28 2015-12-28 Bearing and its installation method
CN201810358561.7A Withdrawn CN108412900A (en) 2015-12-28 2015-12-28 Bearing and its method for dismounting
CN201810358948.2A Withdrawn CN108518412A (en) 2015-12-28 2015-12-28 Facilitate fixed and dismounting bearing
CN201810358947.8A Withdrawn CN108488235A (en) 2015-12-28 2015-12-28 Dismounting, bearing easy for installation
CN201510993411.XA Active CN105422634B (en) 2015-12-28 2015-12-28 A kind of bearing easy to use
CN201810358550.9A Withdrawn CN108488234A (en) 2015-12-28 2015-12-28 A kind of bearing and its installation, method for dismounting

Family Applications Before (2)

Application Number Title Priority Date Filing Date
CN201810358547.7A Withdrawn CN108561427A (en) 2015-12-28 2015-12-28 A kind of bearing
CN201810358577.8A Withdrawn CN108561438A (en) 2015-12-28 2015-12-28 Bearing and its installation method

Family Applications After (4)

Application Number Title Priority Date Filing Date
CN201810358948.2A Withdrawn CN108518412A (en) 2015-12-28 2015-12-28 Facilitate fixed and dismounting bearing
CN201810358947.8A Withdrawn CN108488235A (en) 2015-12-28 2015-12-28 Dismounting, bearing easy for installation
CN201510993411.XA Active CN105422634B (en) 2015-12-28 2015-12-28 A kind of bearing easy to use
CN201810358550.9A Withdrawn CN108488234A (en) 2015-12-28 2015-12-28 A kind of bearing and its installation, method for dismounting

Country Status (1)

Country Link
CN (7) CN108561427A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109604933A (en) * 2018-12-26 2019-04-12 束院生 A kind of bearing dismantling recyclable device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107314068B (en) * 2016-04-27 2020-09-22 台达电子工业股份有限公司 Brake pad assembly
CN108561431B (en) * 2018-05-21 2023-09-22 盐城市三川轴承制造有限公司 Elastic composite cylindrical roller bearing
CN109281939B (en) * 2018-08-16 2020-07-31 东台友铭船舶配件有限公司 Adjustable marine bearing
CN112065867A (en) * 2020-09-15 2020-12-11 温州职业技术学院 Automatic assembling device for inner ring and outer ring of high-speed bearing

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2671499B3 (en) * 1991-01-16 1992-12-31 Sollac DEVICE FOR EXTRACTING A HOLLOW MEMBER INSERTED IN A HOUSING.
CN1067298A (en) * 1991-05-28 1992-12-23 李恩鸿 The manufacture method that wheel bearing liner supports
US5429376A (en) * 1994-03-01 1995-07-04 General Manufacturing Systems, Inc. Fluid-operated collet chuck with centering fingers
JP2003083498A (en) * 2001-09-10 2003-03-19 Nsk Ltd Grease supply device
EP1350972A3 (en) * 2002-04-04 2004-06-23 Dana Corporation Cardan shaft center bearing assembly including a support member containing a rheological fluid
GB2402445B (en) * 2003-05-19 2005-05-11 Minebea Co Ltd A controllable expansion system
US7476034B2 (en) * 2003-08-28 2009-01-13 Boston Scientific Scimed, Inc. Dynamic bushing for medical device tubing
CN201333631Y (en) * 2009-01-20 2009-10-28 宁波优耐特模具有限公司 Hydraulic auxiliary support
CN202200009U (en) * 2011-06-11 2012-04-25 武钢集团昆明钢铁股份有限公司 Dismounting device with multiple oil cylinders for roller bearing block
CN202992579U (en) * 2012-12-14 2013-06-12 由田新技股份有限公司 Bearing device
FR3007807B1 (en) * 2013-06-28 2015-07-17 Skf Ab BEARING BEARING, ESPECIALLY FOR STEERING COLUMN, AND METHOD OF MANUFACTURING THE SAME
CN104295322B (en) * 2014-10-13 2016-08-24 太原理工大学 A kind of air motor using screw rod transmission
CN104500263B (en) * 2014-11-18 2016-01-20 西安交通大学 A kind of multilayer pentagon formula Stirling engine for waste incineration waste heat recovery
CN204308901U (en) * 2014-12-04 2015-05-06 武钢集团昆明钢铁股份有限公司 A kind of bearing uninstall device of easy disassembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109604933A (en) * 2018-12-26 2019-04-12 束院生 A kind of bearing dismantling recyclable device
CN109604933B (en) * 2018-12-26 2020-11-06 海安玻克超硬材料有限公司 Bearing disassembling and recycling device

Also Published As

Publication number Publication date
CN108561427A (en) 2018-09-21
CN105422634B (en) 2018-12-14
CN105422634A (en) 2016-03-23
CN108518412A (en) 2018-09-11
CN108488235A (en) 2018-09-04
CN108488234A (en) 2018-09-04
CN108561438A (en) 2018-09-21

Similar Documents

Publication Publication Date Title
CN108412900A (en) Bearing and its method for dismounting
CN105508415B (en) The bearing of easy disassembly
CN108058137A (en) For the cylinder assembly of gas spring fastener driver
CN108868694B (en) Fracturing sliding sleeve
CN102658555A (en) Gas drive type underwater disconnecting device
CN103836239A (en) Schrader valve and Presta valve dual-purpose tuyere head
CN108457992A (en) The bearing and its method for dismounting that can be more preferably cooled down
CN106050177A (en) Stick slip prevention torsion impact drilling tool
CN206112333U (en) Rotary joint
CN208057582U (en) The oil return apparatus of hydraulic tool
CN105422642B (en) A kind of bearing being easily installed
CN109209281A (en) A kind of preventer
CN207777824U (en) A kind of novel self-lock attaching type pneumatic joint
CN103968102A (en) Ball valve metal valve seat with elastic compensation function and pressure auxiliary sealing function
CN210255952U (en) Coupling disassembling tool
CN201158159Y (en) Quick air discharge mechanism for hydraulic oil of press
CN114526208A (en) Energy-saving and environment-friendly oil pipe conveying oil cylinder
CN202118281U (en) Cut-off stop valve
CN203680204U (en) Device for disassembling and assembling thrust disc
CN208010808U (en) A kind of plunger case pushes the radial friction formula clutch of taper guide rail
CN207634854U (en) A kind of novel self-lock attaching type pneumatic joint
CN207260971U (en) Primary speed-down component and the oild chuck formula drill rod grip device for installing the component
CN101319731A (en) Ultra-high pressure sea water safety valve
CN201031954Y (en) Valve for refrigeration compressor pipeline
CN206111107U (en) Eccentric centralizer

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20180817