CN2106938U - Variable-speed bearing - Google Patents
Variable-speed bearing Download PDFInfo
- Publication number
- CN2106938U CN2106938U CN 91223970 CN91223970U CN2106938U CN 2106938 U CN2106938 U CN 2106938U CN 91223970 CN91223970 CN 91223970 CN 91223970 U CN91223970 U CN 91223970U CN 2106938 U CN2106938 U CN 2106938U
- Authority
- CN
- China
- Prior art keywords
- roller
- speed
- bearing
- inner ring
- variable
- 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.)
- Pending
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- Friction Gearing (AREA)
Abstract
Disclosed is a variable-speed bearing, relating to a mechanical part, in particular suitable for situations like supporting a rotating piece, varying speed, transferring torque. The utility model integrates a traditional bearing and a speed reducer and has the function of overload protection. A circular ring is additionally arranged on the traditional bearing, a ball is supported between the circular ring and an inner ring, and a roller is supported between the inner ring and an outer ring. The functions of supporting, varying the speed, transferring the torque, the overload protection, etc. are realized through friction transmission.
Description
The utility model relates to a kind of mechanical parts, is particularly suitable for the supporting of revolving part, occasions such as speed change, carry-over moment.
In the existing machinery transmission system, bearing only play supporting role, and speed change and carry-over moment realize by speed reducer.This mode of structure makes and takes up room the transmission chain length greatly that transmission efficiency is low, equipment investment and maintenance cost height.
The purpose of this utility model is that a kind of improved bearing will be provided, and it had both had the supporting functions of traditional bearing, had the function of speed reducer speed change and carry-over moment again, and it can overcome the shortcoming of existing machinery transmission effectively.
The purpose of this utility model is achieved in that the roller with traditional bearing links up by pin and circle, and roller can rotate around pin, and pin is fixed on the circle.Roller and Internal and external cycle all have certain pre-pressing force.When rotated, bearing enclose is equivalent to two central gears, and roller is equivalent to planet wheel, and circle is equivalent to tie-rod, and therefore, improved bearing is equivalent to a planetary speed reducer.
The utlity model has following characteristics:
1, the function that integrates traditional bearing and speed reducer.
2, compact structure reduces the transmission space greatly.
3, shorten Transmitted chains greatly, system works efficient height.
4, reduce the investment maintenance cost of machine driven system greatly.
5, has overload protective function.
Feature details of the present utility model will further be set forth by means of drawings and Examples, should not be interpreted as the embodiment that this is limited to model utility certainly.
Fig. 1: the generalized section of variable-speed bearing
Fig. 2: the profile schematic representation of variable-speed bearing
When outer ring (1) fixedly the time, rotary inner ring (4), under the effect of frictional force, roller (2) also rotates, and drives circle (6) rotation by pin (3), and at this moment, velocity ratio is r
1/ (r
1+ r
2)＜1--gearing down.Otherwise, when circle (6) active inner ring (4) is driven, be the speedup transmission.
When inner ring (4) fixedly the time, rotate outer ring (1), under frictional force action, roller (2) also rotates, drives circle (6) by pin (3) and rotates, and at this moment, velocity ratio is r
2/ (r
1+ r
2)＜1--gearing down.Otherwise circle (6) initiatively when outer ring (1) is driven, is the speedup transmission.
When circle (6) fixedly the time, inner ring (4) initiatively outer ring (1) is driven, and then velocity ratio is |-r
1/ r
2|＜1 is gearing down, otherwise then is the speedup transmission.
Between outer ring (1) and the inner ring (4) the roller rolling bearing is arranged, between inner ring (4) and the circle (6) the ball rolling bearing is arranged, so the utlity model has the supporting functions of traditional bearing.
When overload, roller (2) skids, and therefore, the utility model also has overload protective function.
The function of ball (5) is:
1, bears axial force.
2, circle (6) is positioned.
Claims (4)
1, supporting revolving part, the variable-speed bearing device of particularly supporting, transmitting torque, change revolving part rotating speed, this device has an inner ring (4) and outer ring (1), support by roller (2) between inner ring (4) and outer ring (1), it is characterized in that roller (2) is hollow, the pin (3) on the circle (6) inserts roller (2) center hole.
2, device according to claim 1 is characterized in that cooperating between roller (2) and outer ring (1) inner ring (4) is interference fit.
3, device according to claim 1 is characterized in that roller (2) and cooperating of pin (3) are Spielpassung.
4, device according to claim 1 is characterized in that pin (3) and cooperating of circle (6) are interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91223970 CN2106938U (en) | 1991-09-03 | 1991-09-03 | Variable-speed bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91223970 CN2106938U (en) | 1991-09-03 | 1991-09-03 | Variable-speed bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2106938U true CN2106938U (en) | 1992-06-10 |
Family
ID=4930525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91223970 Pending CN2106938U (en) | 1991-09-03 | 1991-09-03 | Variable-speed bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2106938U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022429A (en) * | 2010-11-04 | 2011-04-20 | 上海特安一凯轴承有限公司 | Variable-speed combination bearing |
| CN103016677A (en) * | 2011-09-26 | 2013-04-03 | 魏九洲 | Bearing-like reducer |
| CN103089852A (en) * | 2013-02-26 | 2013-05-08 | 深圳市神拓机电设备有限公司 | Mechanical overload protector |
-
1991
- 1991-09-03 CN CN 91223970 patent/CN2106938U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022429A (en) * | 2010-11-04 | 2011-04-20 | 上海特安一凯轴承有限公司 | Variable-speed combination bearing |
| CN103016677A (en) * | 2011-09-26 | 2013-04-03 | 魏九洲 | Bearing-like reducer |
| CN103089852A (en) * | 2013-02-26 | 2013-05-08 | 深圳市神拓机电设备有限公司 | Mechanical overload protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |