CN105805179A - Coupling locking device - Google Patents
Coupling locking device Download PDFInfo
- Publication number
- CN105805179A CN105805179A CN201410845346.1A CN201410845346A CN105805179A CN 105805179 A CN105805179 A CN 105805179A CN 201410845346 A CN201410845346 A CN 201410845346A CN 105805179 A CN105805179 A CN 105805179A
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- CN
- China
- Prior art keywords
- big
- tapered sleeve
- counterbore
- taper sleeve
- little
- 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.)
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Abstract
The invention provides a coupling locking device. The coupling locking device comprises a coupling and a shaft, and is characterized in that a big counter bore is formed in the upper portion of a shaft hole of the coupling; a small counter bore is formed in the bottom face of the big counter bore; a small taper sleeve is placed in the small counter bore; the two edges of the outer side of the cross section of the small taper sleeve are right-angle sides, a bevel is located inside, a base is located on the bottom face of the small counter bore, and a right-angle side edge is located on the side face of the small counter bore; a big taper sleeve is placed in the big counter bore; the bottom of the big taper sleeve is provided with a downward convex taper sleeve, the two edges of the inner side of the cross section of the taper sleeve are right-angle sides, and an outer side edge is a bevel; the bevel of the downward convex taper sleeve of the big taper sleeve is attached to the bevel of the small taper sleeve; the outer side of the bottom of the big taper sleeve is provided with a threaded hole; the bottom face of the big counter bore is provided with a corresponding threaded hole; and a stud is screwed into the two threaded holes. The coupling locking device has the advantages that torque is transmitted without a key, so that a key groove does not need to be milled in the shaft; and accordingly, the strength of the shaft is improved, and the disassembling and assembling of the coupling are facilitated.
Description
Technical field
The present invention relates to shaft coupling locking device.Particularly pump elastic dowel pin shaft coupling.
Background technology
Shaft coupling 11 of the prior art adopts interference fit with axle 12, transmits moment of torsion by key 13.When the diameter of axle 6, < during d≤30, shaft coupling is H7/j6 with coordinating of axle；When the diameter of axle 30, < during d≤50, shaft coupling is H7/k6 with coordinating of axle；As diameter of axle d > 50, shaft coupling is H7/m6 with coordinating of axle.The method of hot charging so will be adopted in workshop to assemble, bring potential danger to plant operations workman.Moreover, when pump needs repairing, bring many troubles also to dismounting, installation.
Summary of the invention
It is an object of the invention to (1), to change interference fit be matched in clearance, install, dismantle convenient；(2) axle need not process keyway, add the intensity of axle；(3) reduce the potential danger existed in assembling and dissembling process, increase Coupling Life simultaneously, increase customer satisfaction degree.The present invention designs shaft coupling locking device, including shaft coupling, axle, it is characterized in that: offer a big counterbore on the axis hole top of shaft coupling, then a little counterbore is offered again in the bottom surface of big counterbore, a little tapered sleeve is placed in little counterbore, the both sides, outside of the cross section of little tapered sleeve are right-angle side, inclined-plane is in inner side, base is positioned at little counterbore bottom surface, right angle side is positioned at the side of little counterbore, big counterbore is placed a big tapered sleeve, tapered sleeve convex once is arranged at the bottom of big tapered sleeve, the both sides, inner side of the cross section of described tapered sleeve are right-angle side, outer side edges is inclined-plane, the inclined-plane of tapered sleeve convex under big tapered sleeve and the inclined-plane of little tapered sleeve are affixed, bottom outside at big tapered sleeve is provided with screwed hole, the bottom surface of big counterbore is provided with the screwed hole of correspondence, in two screwed holes, twist-on has studs.Offer installing hole in the axle center, bottom of big tapered sleeve, the axis of axle offers screw-threaded counterbore, by screw twist-on screw-threaded counterbore in installing hole.It is an advantage of the invention that need not lean on key transmission moment of torsion, so need not on axle keyseat, which adds the intensity of axle.According to wedge-shaped slot supercharging principle, screw and studs is utilized to make two tapered sleeves compress, make between the outer surface of big tapered sleeve and shaft coupling endoporus generation normal pressure, lower between tapered sleeve and axle, produce normal pressure, if when water pump in operation process moment of friction more than required moment.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the present invention is elaborated.
Accompanying drawing 1 is existing structure schematic diagram；Accompanying drawing 2 is the structural representation of the present invention, and accompanying drawing 3 is the mechanical analysis schematic diagram of the present invention.
Detailed description of the invention
Shaft coupling 1 in figure, axle 2, it is characterized in that: offer a big counterbore 3 on the axis hole top of shaft coupling, then a little counterbore 4 is offered again in the bottom surface of big counterbore, a little tapered sleeve 5 is placed in little counterbore, the both sides, outside of the cross section of little tapered sleeve are right-angle side, inclined-plane is in inner side, base is positioned at little counterbore bottom surface, right angle side is positioned at the side of little counterbore, big counterbore is placed a big tapered sleeve 6, tapered sleeve 7 convex once is arranged at the bottom of big tapered sleeve, the both sides, inner side of the cross section of described tapered sleeve are right-angle side, outer side edges is inclined-plane, the inclined-plane of tapered sleeve convex under big tapered sleeve and the inclined-plane of little tapered sleeve are affixed, bottom outside at big tapered sleeve is provided with screwed hole 8, the bottom surface of big counterbore is provided with the screwed hole 9 of correspondence, in two screwed holes, twist-on has studs 10.Offer installing hole 11 in the axle center, bottom of big tapered sleeve, the axis of axle offers screw-threaded counterbore 12, by screw 13 twist-on screw-threaded counterbore in installing hole.
If the thrust after screw and screwing up stud is Fa, tapered sleeve first and tapered sleeve second coordinate the semi-cone angle on inclined-plane to be θ, then the normal pressure between this inclined-plane is F1=Fa/sin θ, and the normal pressure between normal pressure and tapered sleeve second and shaft coupling endoporus between tapered sleeve first and axle is then F2=F1 × cos θ/2=Fa/2tan θ.If θ=20 °, then F2=1.37Fa；If θ=10 °, then F2=2.84Fa.As can be seen here, semi-cone angle θ is more little, and F2 is then more big, but the too small meeting in θ angle makes troubles, therefore should take θ=10 ° ~ 14 ° to installation, dismounting.
If the static friction factor between tapered sleeve first and axle, between tapered sleeve second and shaft coupling is μ, then frictional force Ff=μ F2.If the shaft power of pump is P, rotating speed is n, then required in pump operation process moment is Mn=9550P/n.When the moment of friction Mf that frictional force produces is more than Mn, will not there is relative sliding with axle and shaft coupling in locking device, and shaft coupling transmission power is 100%, it is believed that the design of locking device is rational.
Making Mf > Mn, a kind of method can change θ angle, and when thrust Fa mono-timing, more little then Mf is more big at θ angle；A kind of method is to change thrust Fa, when θ angle one timing, Fa is more big, and then Mf is more big, and the size changing Fa can be passed through to change screw, stud quantity and change screw, stud specification (because the big screw of specification, stud can use bigger screw-down torque when tightening, thus producing bigger thrust) realizes.
Claims (2)
1. shaft coupling locking device, including shaft coupling, axle, it is characterized in that: offer a big counterbore on the axis hole top of shaft coupling, then a little counterbore is offered again in the bottom surface of big counterbore, a little tapered sleeve is placed in little counterbore, the both sides, outside of the cross section of little tapered sleeve are right-angle side, inclined-plane is in inner side, base is positioned at little counterbore bottom surface, right angle side is positioned at the side of little counterbore, big counterbore is placed a big tapered sleeve, tapered sleeve convex once is arranged at the bottom of big tapered sleeve, the both sides, inner side of the cross section of described tapered sleeve are right-angle side, outer side edges is inclined-plane, the inclined-plane of tapered sleeve convex under big tapered sleeve and the inclined-plane of little tapered sleeve are affixed, bottom outside at big tapered sleeve is provided with screwed hole, the bottom surface of big counterbore is provided with the screwed hole of correspondence, in two screwed holes, twist-on has studs.
2. by the shaft coupling locking device described in claim 1, it is characterised in that: offer installing hole in the axle center, bottom of big tapered sleeve, the axis of axle offers screw-threaded counterbore, by screw twist-on screw-threaded counterbore in installing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410845346.1A CN105805179A (en) | 2014-12-31 | 2014-12-31 | Coupling locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410845346.1A CN105805179A (en) | 2014-12-31 | 2014-12-31 | Coupling locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105805179A true CN105805179A (en) | 2016-07-27 |
Family
ID=56421068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410845346.1A Pending CN105805179A (en) | 2014-12-31 | 2014-12-31 | Coupling locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105805179A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106272538A (en) * | 2016-08-16 | 2017-01-04 | 珠海格力智能装备有限公司 | Robot and head turning device thereof |
| CN110541890A (en) * | 2019-08-19 | 2019-12-06 | 中国舰船研究设计中心 | design method for keyless connection of rudder system of surface ship |
| CN112518111A (en) * | 2020-11-25 | 2021-03-19 | 阿斯科纳科技（深圳）有限公司 | Multi-axis double-head gantry motion platform and equipment applying same |
-
2014
- 2014-12-31 CN CN201410845346.1A patent/CN105805179A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106272538A (en) * | 2016-08-16 | 2017-01-04 | 珠海格力智能装备有限公司 | Robot and head turning device thereof |
| CN106272538B (en) * | 2016-08-16 | 2021-09-24 | 珠海格力智能装备有限公司 | Robot and head turning device thereof |
| CN110541890A (en) * | 2019-08-19 | 2019-12-06 | 中国舰船研究设计中心 | design method for keyless connection of rudder system of surface ship |
| CN112518111A (en) * | 2020-11-25 | 2021-03-19 | 阿斯科纳科技（深圳）有限公司 | Multi-axis double-head gantry motion platform and equipment applying same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160727 |
|
| WD01 | Invention patent application deemed withdrawn after publication |