CN201098876Y - Screw thread press-loading device - Google Patents
Screw thread press-loading device Download PDFInfo
- Publication number
- CN201098876Y CN201098876Y CNU2007201953113U CN200720195311U CN201098876Y CN 201098876 Y CN201098876 Y CN 201098876Y CN U2007201953113 U CNU2007201953113 U CN U2007201953113U CN 200720195311 U CN200720195311 U CN 200720195311U CN 201098876 Y CN201098876 Y CN 201098876Y
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- CN
- China
- Prior art keywords
- screw
- press
- screw thread
- hole
- compression leg
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a thread-adopted press-mounting device, consisting of a base, a compression leg, a pressure plate, a bolt, a round head screw, a handle and other parts; the device is used for the press mounting on the occasion that an axle member and a hole member between which is an interference fit are fastened through a central threaded member. Screw thread is provided on the front end of the base which can be screwed into the central screw hole of the axle member by the handle, and the screwing is stopped at the end face of the attaching hole member of the compression leg. The round head screw at the rear end of the device is then screwed down. On one hand, the pre-tightening force of the screw is converted to a pressing force on the hole member through the round head screw, the pressure plate and the compression leg; on the other hand, the pre-tightening force is converted to a pulling force on the axle member through the screw thread on the front end of the base. As a result, the mounting is accomplished through the interference-fit hole member and the axle member undertaking the simultaneous effects of the pressing force and the pulling force respectively.
Description
Technical field
The utility model relates to the hole of interference fit such as a kind of screw thread press-loading apparatus, particularly gear, bearing and rotating shaft, the press-loading apparatus of axle part.
Technical background
In mechanical industry, interference fit joint is a kind of common connecting mode, its assembly method have press-fit, modes such as bottoming hole spare, cooling axle part, be the most frequently used assembling mode and press-fit.In press-fiting assembling, the hydraulic pressure assembling is again the most frequently used press-fit approach.No matter be heating, cooling or hydraulic pressure assembling, must use special equipment, and equipment must take certain space, this has just caused higher production cost.
Summary of the invention
The purpose of this utility model is to provide a kind of axle part of interference fit and hole part of being applicable to pass through a center screw element and fastening occasion, the pretightning force of utilizing screw thread obtains press-fiting required pressure and realizes the interference assembling, be easy to manufacture, a kind of screw thread press-loading apparatus easy to install.
The technical solution of the utility model is: device comprises pedestal, compression leg, pressing plate, bolt, cheese head screw, press-fits screw rod, plate stem, handle.It is characterized in that: the screw front end that press-fits of pedestal has the screw thread that cooperates with axle part center screw, and the rear end has screw installation cheese head screw compression leg and passes pedestal, is connected with pressing plate with bolt.
The utility model has the advantages that: simple in structure, be convenient to make, easy to operate, cost is low, and is reusable, safe and reliable etc.
Description of drawings
It is such that structure of the present utility model constitutes
Fig. 1 is structure of the present utility model and work schematic diagram.
Fig. 2 is the A-A cutaway view of Fig. 1.
Among the figure, pedestal (1), pressing plate (2), cheese head screw (3), bolt (4), compression leg (5), hole part (6), axle part (7), support (8), support hole (9), press-fit screw rod (10), bar plate (11), handle (12), hole (13).
The specific embodiment
Most preferred embodiment of the present utility model is such, and with reference to Fig. 1-Fig. 2, from accompanying drawing 1 as seen, pedestal (1) front end has the screw thread that cooperates with the axle part, and the rear end has screw, and cheese head screw (3) press-fits required pressure by cooperating with the pedestal screw to produce.In conjunction with Fig. 2 as seen, compression leg (5) penetrates pedestal (1) and utilizes bolt (4) to be connected with pressing plate (2), thereby is embedded among the pedestal (1), and can move around.Handle (12) slidably, its effect has two: the one, can use as the rocking-turn handle during precession front end screw thread; The 2nd, when tightening the cheese head screw (3) of rear end, can insert support hole (9) suitable in the support (8), prevent press-loading apparatus and axle part (7) rotation.Press-fit screw rod (10) and be the front end center-pole of pedestal (1), pedestal (1) porose (13) holds compression leg (5) and passes, and welds between bar plate (11) top and the pedestal (1) to tighten up.Handle (12) passes the support hole (9) of passing support (8) behind the hole of bar plate (11), and the bar of handle (12) is slightly less than external diameter hole and support hole (9) of bar plate (11).
The pedestal front end of device has screw thread, screws in the center screw of axle part before press-fiting, and is threaded to till the part end face of compression leg applying hole.The cheese head screw of device for screwing up rear end then, the pretightning force of this screw thread is converted into pressure to the hole part by cheese head screw, pressing plate, compression leg on the one hand, be converted into pulling force by pedestal front end screw thread on the other hand, in hole part pressurized, axle part tension, finish under the effect and press-fit axle spare.
The pretightning force F=T/ of screw thread (d*K), wherein: T is a moment of torsion; D is the public footpath of screw thread; K is a screw-down torque, generally gets 0.18～0.21, and for the utility model particular design screw thread, screw head is a ball-shaped, and the first-class friction surface of screw thread and ball is tightened COEFFICIENT K and can be reduced to 0.14 through fine finishining.Therefore,, when screw-down torque reaches 140N.m, can obtain screw thread pretightning force 81.63kN, be equivalent to cylinder diameter and be the pressure that the hydraulic cylinder of 800mm obtains under 16.24MPa if adopt the M14 screw thread.
Claims (3)
1, a kind of screw thread press-loading apparatus, comprise pedestal, compression leg, pressing plate, bolt, cheese head screw, press-fit screw rod, plate stem, handle, screw rod (10) front end that press-fits that it is characterized in that pedestal (1) has the screw thread that cooperates with axle part (7) center screw, and the rear end has screw cheese head screw (3) is installed.
2, the screw thread press-loading apparatus of narrating according to claim 1 is characterized in that compression leg (5) passes the hole (13) on the pedestal (1), and bolt (4) is connected with pressing plate (2).
3, the screw thread press-loading apparatus of narrating according to claim 1 is characterized in that handle (12) is contained in bar plate (11), support hole (9), and handle (12) bar is smaller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201953113U CN201098876Y (en) | 2007-11-09 | 2007-11-09 | Screw thread press-loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201953113U CN201098876Y (en) | 2007-11-09 | 2007-11-09 | Screw thread press-loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201098876Y true CN201098876Y (en) | 2008-08-13 |
Family
ID=39935407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201953113U Expired - Fee Related CN201098876Y (en) | 2007-11-09 | 2007-11-09 | Screw thread press-loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201098876Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101569987B (en) * | 2009-03-24 | 2010-10-20 | 南车戚墅堰机车有限公司 | Flywheel press mounting device for diesel |
| CN103586830A (en) * | 2012-08-17 | 2014-02-19 | 成都虹华环保科技有限公司 | Structure capable of sealing and fixing centrifugal machine |
| CN105150170A (en) * | 2015-09-30 | 2015-12-16 | 安徽江淮汽车股份有限公司 | Bush disassembly and assembly tool |
| CN107344347A (en) * | 2017-08-28 | 2017-11-14 | 安徽江淮汽车集团股份有限公司 | A kind of manual press-loading device |
-
2007
- 2007-11-09 CN CNU2007201953113U patent/CN201098876Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101569987B (en) * | 2009-03-24 | 2010-10-20 | 南车戚墅堰机车有限公司 | Flywheel press mounting device for diesel |
| CN103586830A (en) * | 2012-08-17 | 2014-02-19 | 成都虹华环保科技有限公司 | Structure capable of sealing and fixing centrifugal machine |
| CN103586830B (en) * | 2012-08-17 | 2015-06-17 | 成都虹华环保科技有限公司 | Structure capable of sealing and fixing centrifugal machine |
| CN105150170A (en) * | 2015-09-30 | 2015-12-16 | 安徽江淮汽车股份有限公司 | Bush disassembly and assembly tool |
| CN107344347A (en) * | 2017-08-28 | 2017-11-14 | 安徽江淮汽车集团股份有限公司 | A kind of manual press-loading device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080813 Termination date: 20131109 |