CN103206462B - Bearing pre-tightening device - Google Patents
Bearing pre-tightening device Download PDFInfo
- Publication number
- CN103206462B CN103206462B CN201310128670.7A CN201310128670A CN103206462B CN 103206462 B CN103206462 B CN 103206462B CN 201310128670 A CN201310128670 A CN 201310128670A CN 103206462 B CN103206462 B CN 103206462B
- Authority
- CN
- China
- Prior art keywords
- friction plate
- mandrel
- friction
- actuator
- bearing
- 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
Landscapes
- Mounting Of Bearings Or Others (AREA)
Abstract
The present invention relates to a kind of bearing pre-tightening device, it comprises housing, the mandrel be arranged in housing hollow cavity, control the friction plate unit that mandrel rotates, and the force application mechanism of power is applied to friction plate unit.Controlled the rotation of mandrel by the first friction torque size between the first and second friction plates in force application mechanism adjustment friction plate unit, thus realize the control to the pretightening force of preloaded bearing.
Description
Technical field
The present invention relates to mechanical parts technical field, particularly relate to a kind of bearing pre-tightening device.
Background technique
Rolling bearing, in the process of assembling, in order to make the vibration that bearing movable is steady, reduce rotatable parts, and improving the life-span of running gear, usually needing to carry out pretension to the axial force of bearing.
At present, the method for preloaded bearing mainly operator in actual mechanical process, rely on self experience and feel to control the pretightening force of preloaded bearing.But the shortcoming of this pre-tension method is that personal factor impact is comparatively large, easily causes pretightening force not enough or excessive.When bearing pre-tightened is not enough, between outer ring and roller, also can there is gap, cause bearing load carrying capacity not enough, reduce working life.When bearing pre-fastening is excessive, may occur that bearing is stuck, the phenomenon such as even burn, cause causing whole equipment to run well.
Summary of the invention
Technical problem to be solved of the present invention is to provide a kind of bearing pre-tightening device, pretightening force required when can ensure preloaded bearing effectively, exactly, avoid occurring that loading ability of bearing is not enough, stuck, the situation such as even to burn, thus the normal operation of the equipment of guarantee.
According to the present invention, provide a kind of bearing pre-tightening device to comprise: housing, it cylindrical, hollow chamber comprising open end, closed end and formed between the ends, be provided with cover plate at open end; Be arranged on the mandrel that in hollow cavity and two ends are each passed through described closed end and cover plate, comprise integrated type and be formed radially in limited section on mandrel, and penetrate mandrel and the actuator be combined together by screw thread and mandrel; Friction plate unit, comprise and being arranged alternately and the second friction plate of the first friction plate of the annular of fitting each other and annular, first friction plate is arranged through outer rim and keeps engaging with the inwall of housing, and the second friction plate is arranged through inner edge and keeps engaging with the periphery of limited section; To be arranged in hollow cavity and the force application mechanism be between housing and mandrel, force application mechanism is used for applying power, to make to produce the first friction torque between the first friction plate and the second friction plate to friction plate unit.Wherein, when applying motivator on actuator, and when the second friction torque resulted between actuator and mandrel is not more than the first friction torque, mandrel non rotating, and actuator can axial motion in mandrel, thus treat the bearing generation effect of pretension; And when the second friction torque is greater than the first friction torque, the first friction plate can rotate relative to the second friction plate, cause mandrel to rotate together with actuator, thus make actuator keep its axial position constant.
In one embodiment, inner walls is provided with the first internal spline, and it, for matching with the first external splines be arranged in the first friction plate outer rim, makes the first friction plate axially to slide.
In one embodiment, the periphery of limited section is provided with the second external splines, and it, for matching with the second internal spline be arranged on the second friction plate inner edge, makes the second friction plate axially to slide.
In one embodiment, the inwall of closed end is provided with the groove of annular, and in groove, be provided with multiple ball, ball contacts with the limited part of mandrel, moves towards closed end for limiting mandrel.
In one embodiment, force application mechanism comprises for the extrusion of extrusion friction blade unit, for regulating the force-applying piece of pressure, and the elastic component be successively set between extrusion and force-applying piece and spacer element.
In one embodiment, one end of extrusion is provided with the promote table for extrusion friction blade unit, and the other end is provided with the receiving groove for holding elastic component.
In one embodiment, the inwall of force-applying piece and housing is threaded connection.
In one embodiment, the outer peripheral surface of spacer element is provided with radially outward extending locating stud, and be provided with on the inwall of housing axially distribute and the locating slot matched with locating stud.
In one embodiment, the open end of housing is also provided with the locating piece for positioning cover plate.
In one embodiment, also comprise the top-pressure mechanism of the tail end being located at actuator, it comprises the distance ring on outer ring for acting on the bearing treating pretension or inner ring, and promotes the ring pushing plate of distance ring.
, easy processing simple, easy to operate according to the structure of bearing pre-tightening device of the present invention, applicability is extensive, is convenient to promote the use of, can ensure that the pretightening force of preloaded bearing effectively, exactly, there will not be loading ability of bearing not enough, stuck, the situation such as even to burn.
Accompanying drawing explanation
Also will be described in more detail the present invention with reference to accompanying drawing based on embodiment hereinafter.Wherein:
Fig. 1 shows the structural representation according to bearing pre-tightening device of the present invention.
Fig. 2 shows the perspective exploded view according to bearing pre-tightening device of the present invention.
Fig. 3 shows the installation diagram according to bearing pre-tightening device of the present invention.
Fig. 4 shows the housing according to bearing pre-tightening device of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As figure 1 shows according to bearing pre-tightening device 100 of the present invention, it is the size carrying out restrictive axial power by controlling counter support moment of torsion, thus realizes the control to bearing pre-fastening.This bearing pre-tightening device 100 is not limited only to bearing pre-tightened, also can be applied to the place that other need pre-clamping of workpieces or control axial force.Wherein, above-mentioned counter support moment of torsion i.e. the first friction torque hereinafter described.
As shown in Figure 1, bearing pre-tightening device 100 comprises housing 4.Housing 4 comprises the hollow cavity that defines 33 between open end 32, closed end 31 and two ends.Hollow cavity 33 is roughly cylindrical, can clearly demonstrate at accompanying drawing 4.The open end 32 of housing 4 is provided with locating piece 8 and circular cover 7 successively.Locating piece 8 is preferably jump ring, and it not only can the position of positioning cover plate 7 exactly, also can facilitate the dismounting of cover plate 7.
Bearing pre-tightening device 100 according to the present invention also comprises and to be arranged in hollow cavity 33 and two ends are each passed through the mandrel 13 of closed end 31 and cover plate 7.Mandrel 13 comprises integrated type and is formed radially in limited section 35 on mandrel 13.The actuator 1 penetrating mandrel 13 is provided with at the axle center place of mandrel 13.Actuator 1 is connected by screw thread and mandrel 13, can move in the axial direction after actuator 1 is rotated in mandrel 13.Wherein, actuator 1 is preferably bolt, easy understand its also can elect leading screw as.
Consider mandrel 13 moving axially likely at housing 4, thus affect the effect of preloaded bearing 101, the inwall of the closed end 31 of housing 4 is provided with the groove (not shown) of annular, and in groove, is also provided with multiple ball 3.Wherein, ball 3 contacts with the limited section 35 of mandrel 13, plays the effect of restriction mandrel 13 towards closed end 31 movement.The concrete structure of the art personnel easy understand groove, no further details to be given herein.
Bearing pre-tightening device 100 according to the present invention also comprises friction plate unit 36, and it comprises and being arranged alternately and first friction plate 12 and second friction plate 11 of fitting each other.First friction plate 12 and the second friction plate 11 are annular.First friction plate 12 is arranged through outer rim and keeps engaging with the inwall of housing 4, and the second friction plate 11 is arranged through inner edge keeps engaging with the periphery of limited section 35.
Bearing pre-tightening device 100 according to the present invention is also arranged in hollow cavity 33 force application mechanism 45 be between housing 4 and mandrel 13.Force application mechanism 45 comprise extrusion friction blade unit 36 extrusion 10, for regulating the force-applying piece 6 of pressure, and the elastic component 9 be successively set between extrusion 10 and force-applying piece 6 and spacer element 5.Wherein, extrusion 10 one end is provided with the annular promote table 43 of extrusion friction blade unit 36, and the other end of extrusion 10 is provided with the receiving groove 42 of the annular for holding elastic component 9.Receiving groove 42 can positioning elastic part 9 effectively.Elastic component 9 is preferably spring, and it is for providing lasting pressure to friction element 36, to ensure there is frictional force between the first friction plate 12 and the second friction plate 11 always.Force-applying piece 6 is threaded connection with the inwall of housing 4, after force-applying piece 6 is rotated in housing 4, can axially be moved, thus compression elastic piece 9.In a unshowned embodiment, follow force-applying piece 6 to prevent elastic component 9 to rotate, the outer peripheral surface of spacer element 5 is provided with radially outward extending locating stud, and be provided with on the inwall of housing 4 axially distribute and the locating slot matched with locating stud.By using being connected of locating stud and locating slot, effectively can ensure that spacer element 5 can not rotate, thus also ensure that the rotation of force-applying piece 6 can not have influence on elastic component 9.
As shown in Figure 2, the first friction plate 12 in friction plate unit 36 and the concrete distribution situation of the second friction plate 11 is below introduced.In this illustrated embodiment, housing 4 inwall is provided with the first internal spline 40(and sees Fig. 4), and in the first friction plate 12 outer rim, be provided with the first external splines 39 matched with the first internal spline 40.By matching of the first internal spline 40 and the first external splines 39, the first friction plate 12 can radially be slided.In another embodiment, the periphery of the limited section 35 of mandrel 13 is provided with the second external splines 37, and on the second friction plate 11 inner edge, be provided with the second internal spline 38 matched with the second external splines 37.By matching of the second external splines 37 and the second internal spline 38, the second friction plate 11 not only can radially be slided, but also can with mandrel 13 synchronous axial system.In summary, because mandrel 13 can drive the second friction plate 11 to rotate relative to the first friction plate 12, the first friction torque that obstruction second friction plate 11 rotates therefore can be produced between the first friction plate 12 and the second friction plate 11.
As shown in Figure 3, bearing pre-tightening device 100 also comprises top-pressure mechanism 50, and it is arranged on treats between the bearing 101 of pretension and actuator 1.Top-pressure mechanism 50 comprises the distance ring 52 on bearing 101 outer ring or inner ring that act on and treat pretension, and the size of its internal-and external diameter is determined by the inner ring of bearing 101 and outer ring treating pretension.When needing pretension when the outer ring of the bearing 101 of pretension, the internal-and external diameter of distance ring 52 is roughly consistent with outer ring.When pretension is when the inner ring of the bearing 101 of pretension, the internal-and external diameter of distance ring 52 is roughly consistent with inner ring.Be provided with ring pushing plate 51 in the outside (left side shown in Fig. 3) of distance ring 52, it treats the bearing 101 of pretension for promoting distance ring 52 pretension.
Conveniently be connected with main engine body 102, housing 4 outer wall corresponding to open end 32 is provided with radially outward extending joint 49.Shape, the size of this joint 49 can design according to specific needs, and such as its profile with bearing (ball) cover, size are roughly consistent.
Below introduce the working principle according to bearing pre-tightening device 100 of the present invention.When rotation urging part 6 moves to closed end 31, then force-applying piece 6 can be acted on elastic component 9 by spacer element 5, and its shorten length, elastic force are increased.Thus, elastic component 9 can act on friction plate unit 36 by extrusion 10, impel the frictional force between the first friction plate 12 and the second friction plate 11 increases, thus increase the first friction torque between the first friction plate 12 and the second friction plate 11, i.e. counter support moment of torsion.When External Force Acting rotates in actuator 1, between actuator 1 and mandrel 13, also can produce frictional force, thus produce the second friction torque between actuator 1 and mandrel 13.Wherein, when the second friction torque is not more than the first friction torque, the first friction torque can hinder mandrel to rotate, and actuator 1 axially can be moved in mandrel 13.The actuator 1 of movement can act on inner ring or the outer ring of the bearing 101 treating pretension by top-pressure mechanism 50, thus the bearing 101 treating pretension produces the effect of pretension.When the second friction torque is greater than the first friction torque, mandrel 13 can drive the second friction plate 11 to rotate relative to the first friction plate 12, then mandrel 13 can follow actuator 1 synchronous axial system, thus the actuator 1 in mandrel 13 cannot be moved axially.Easy understand, the second friction torque is mainly the friction torque of the internal and external threads between actuator 1 and mandrel 13, and this thread friction moment is associated with the positive pressure acted on screw thread, and axial pre tightening force when positive pressure and preloaded bearing 101 is associated.Therefore, the size of pretightening force effectively can be controlled by controlling the first friction torque.
Bearing pre-tightening device 100 according to the present invention is in specific operation:
Step A, calculates the pretightening force of the bearing 101 treating pretension.
Step B, removes locating piece 8, opens cover plate 7, adjusting the first friction torque size, namely adjusting the maximum pretightening force that bearing pre-tightening device 100 can allow, after to be adjusted, installing cover plate 7 and locating piece 8 successively by rotating force-applying piece 6.
Step C, is treating that outside the bearing 101 of pretension, (on the left of Fig. 3) installs top-pressure mechanism 50, is connected the joint 49 of housing 4 with main engine body 102 afterwards again.
D step, by using spanner or other instruments to rotate actuator 1, originally, actuator 1 axially can be moved at mandrel 13, and pretension treats the bearing 101 of pretension, when reaching the maximum pretightening force of permission, mandrel 13 and actuator 1 meeting synchronous axial system, make the axial position of actuator 1 constant.
E step, remove the joint 49 of housing 4 and the connection of main engine body 102, take out top-pressure mechanism 50, the step of whole preloaded bearing 101 completes.
, easy processing simple, easy to operate according to the structure of bearing pre-tightening device 100 of the present invention, applicability is extensive, is convenient to promote the use of, can ensure that the pretightening force of preloaded bearing effectively, exactly, there will not be loading ability of bearing not enough, stuck, the situation such as even to burn.
Although invention has been described with reference to preferred embodiment, without departing from the scope of the invention, various improvement can be carried out to it and parts wherein can be replaced with equivalent.Especially, only otherwise there is structural hazard, the every technical characteristics mentioned in each embodiment all can combine in any way.The present invention is not limited to specific embodiment disclosed in literary composition, but comprises all technological schemes fallen in the scope of claim.
Claims (10)
1. a bearing pre-tightening device, comprising:
Housing, the cylindrical, hollow chamber comprising closed end, open end and formed between the ends, is provided with cover plate at described open end,
Be arranged on the mandrel that in described hollow cavity and two ends are each passed through described closed end and cover plate, comprise integrated type and be formed radially in limited section on described mandrel, and penetrate described mandrel and the actuator be combined together by screw thread and described mandrel,
Friction plate unit, comprise and being arranged alternately and the second friction plate of the first friction plate of the annular of fitting each other and annular, described first friction plate is arranged through outer rim and keeps engaging with the inwall of housing, and described second friction plate is arranged through inner edge and keeps engaging with the periphery of described limited section
To be arranged in described hollow cavity and the force application mechanism be between described housing and described mandrel, described force application mechanism is used for applying power to described friction plate unit, to make to produce the first friction torque between described first friction plate and the second friction plate,
Wherein, when applying motivator on described actuator, and when the second friction torque resulted between described actuator and described mandrel is not more than the first friction torque, described mandrel non rotating, and described actuator can axial motion in described mandrel, thus treats the bearing generation effect of pretension; And when the second friction torque is greater than the first friction torque, described first friction plate can rotate relative to described second friction plate, cause described mandrel to rotate together with described actuator, thus make described actuator keep its axial position constant.
2. device according to claim 1, is characterized in that, described inner walls is provided with the first internal spline, and it, for matching with the first external splines be arranged in described first friction plate outer rim, makes described first friction plate axially to slide.
3. device according to claim 1 and 2, it is characterized in that, the periphery of described limited section is provided with the second external splines, and it, for matching with the second internal spline be arranged on described second friction plate inner edge, makes described second friction plate axially to slide.
4. device according to claim 1 and 2, it is characterized in that, the inwall of described closed end is provided with the groove of annular, is provided with multiple ball in groove, described ball contacts with the limited part of described mandrel, moves towards described closed end for limiting described mandrel.
5. device according to claim 1 and 2, it is characterized in that, described force application mechanism comprises extrusion for extruding described friction plate unit, for regulating the force-applying piece of pressure, and the elastic component be successively set between described extrusion and described force-applying piece and spacer element.
6. device according to claim 5, is characterized in that, one end of described extrusion is provided with the promote table for extruding described friction plate unit, and the other end is provided with the receiving groove for holding described elastic component.
7. device according to claim 5, is characterized in that, the inwall of described force-applying piece and described housing is threaded connection.
8. device according to claim 5, is characterized in that, the outer peripheral surface of described spacer element is provided with radially outward extending locating stud, and be provided with on the inwall of described housing axially distribute and the locating slot matched with described locating stud.
9. device according to claim 1 and 2, is characterized in that, the open end of described housing is also provided with the locating piece for locating described cover plate.
10. device according to claim 1 and 2, is characterized in that, also comprises the top-pressure mechanism of the tail end being located at described actuator, and it comprises the distance ring on outer ring for acting on the bearing treating pretension or inner ring, and promotes the ring pushing plate of described distance ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310128670.7A CN103206462B (en) | 2013-04-12 | 2013-04-12 | Bearing pre-tightening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310128670.7A CN103206462B (en) | 2013-04-12 | 2013-04-12 | Bearing pre-tightening device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103206462A CN103206462A (en) | 2013-07-17 |
| CN103206462B true CN103206462B (en) | 2015-08-19 |
Family
ID=48753804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310128670.7A Active CN103206462B (en) | 2013-04-12 | 2013-04-12 | Bearing pre-tightening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103206462B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925356B (en) * | 2014-03-31 | 2016-12-07 | 南京梅山冶金发展有限公司 | A kind of rolling bearing pretightening method of adjustment |
| CN106224395B (en) * | 2016-09-06 | 2019-03-29 | 沃德传动（天津）股份有限公司 | A kind of pre-tightening apparatus of bearing assembly and bearing |
| CN106763231A (en) * | 2016-11-29 | 2017-05-31 | 江苏万达特种轴承有限公司 | Disposed thread adjustable type composite bearing |
| CN107100540B (en) * | 2017-05-19 | 2020-05-08 | 武汉奇泰隆机械有限公司 | Combined bearing turbine drilling tool supporting joint with strong bearing capacity |
| CN116044909B (en) * | 2023-01-17 | 2023-07-25 | 索特传动设备有限公司 | Bearing pre-tightening device and gear box |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252030A (en) * | 2010-05-20 | 2011-11-23 | 庞长同 | Bearing pre-tightening device with axial force compensation function |
| CN102261389A (en) * | 2010-05-28 | 2011-11-30 | 庞长同 | Novel bearing pre-tightening device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007247669A (en) * | 2006-03-13 | 2007-09-27 | Ntn Corp | Bearing unit with rotary sensor |
| JP2008191126A (en) * | 2007-02-08 | 2008-08-21 | Ntn Corp | Wheel bearing with sensor |
-
2013
- 2013-04-12 CN CN201310128670.7A patent/CN103206462B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252030A (en) * | 2010-05-20 | 2011-11-23 | 庞长同 | Bearing pre-tightening device with axial force compensation function |
| CN102261389A (en) * | 2010-05-28 | 2011-11-30 | 庞长同 | Novel bearing pre-tightening device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103206462A (en) | 2013-07-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103206462B (en) | Bearing pre-tightening device | |
| CN101305209B (en) | Ball screw driving unit having overload clutch | |
| US9863514B2 (en) | Ball screw apparatus | |
| KR20060122808A (en) | Actuator and brake assembly | |
| KR20130120489A (en) | Electromechanically operable vehicle brake having an improved piston | |
| US20170335902A1 (en) | Torque Limiting Apparatus and Method | |
| JP6667258B2 (en) | Polishing device, pressing unit, and polishing method | |
| JP2005325944A (en) | Lead screw type moving device and its moving body | |
| CN102840258A (en) | Brake | |
| GB2563509A (en) | Electromechanical force actuator | |
| MX344998B (en) | Valve actuator torque limiter. | |
| US9089989B2 (en) | Geared bolt system for securing a circular saw blade | |
| CN104343922A (en) | Ball screw device | |
| CN106168260B (en) | Engine torque protector | |
| US10738837B2 (en) | Torque limiter assembly | |
| JP4438676B2 (en) | No-back device | |
| CN104533987A (en) | Adjustable anti-overloading transmission shaft | |
| RU2559078C1 (en) | Assembled face cutter | |
| CN107790496B (en) | The roller mill of the roll module of roller mill and the roll unit for rolling stick-like roll object | |
| US20180104801A1 (en) | Torque-limiting driver with embodied roller | |
| CN102092024A (en) | Power tool | |
| KR100670953B1 (en) | Brake Power Adjustable Air Brake | |
| US20120018181A1 (en) | Output Mode Switching Device For Power Tool | |
| US9687971B2 (en) | Hand-driven mechanical screwdriver | |
| JP2015180799A (en) | Floor closer |
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 | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151028 Address after: Dong Jia Duan high-tech park in Hunan province 412002 Zhuzhou city Lusong District Patentee after: Hunan Nanfang Aviation High Precision Transmission Co., Ltd. Address before: Dong Jia Duan high-tech park in Hunan province 412002 Zhuzhou city Lusong District Patentee before: Zhuzhou Gaojing Transmission Technology Co., Ltd. |