CN2366611Y - Wedging key type over-running clutch - Google Patents
Wedging key type over-running clutch Download PDFInfo
- Publication number
- CN2366611Y CN2366611Y CN 99237180 CN99237180U CN2366611Y CN 2366611 Y CN2366611 Y CN 2366611Y CN 99237180 CN99237180 CN 99237180 CN 99237180 U CN99237180 U CN 99237180U CN 2366611 Y CN2366611 Y CN 2366611Y
- Authority
- CN
- China
- Prior art keywords
- wedge key
- key groove
- sector unit
- outer shroud
- free wheel
- 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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- Mechanical Operated Clutches (AREA)
Abstract
The utility model relates to a wedging key type over-running clutch used for mechanical transmission, comprising an outer ring and an inner rotating member; a fan-shaped block is arranged between the outer ring and the inner rotating member and is correspondingly provided with a wedging key groove deflecting with the radius; a wedging key is arranged in the wedging key groove; an elastic element is arranged on one side of the fan-shaped block. The utility model has the advantages of simple structure, good manufacturability, large contact area of wedging contact and self locking, high bearing capability, large transmitted power, strong shock resistance, stable self locking, strong operational reliability, long service life and broad application. The utility model is especially suitable for the field of heavy-duty engineering machines.
Description
The utility model relates to a kind of mechanically operated wedge key formula free wheel device that is used for, and it is the further improvement to existing free wheel device, has bearing capacity height, big, the little characteristic of wearing and tearing of transmission power.
Existing overrun is divided into inserted type (pawl type) and friction type from structural principle.In friction type, divide roller type and wedge block type again, described in " mechanical design handbook " the 4th volume the 10th chapter " type of free wheel device commonly used and performance are relatively ", these free wheel devicees are existing following deficiency in varying degrees: 1, the fixing wearing and tearing of point of contact, and produce a plane, and the life-span is not long, and voussoir may overturn when serious, can not resume work automatically: 2, assembly precision requires high, manufacturability is poor, processing difficulties, and self-locking performance is poor; 3, bearing capacity is less.The one of the main reasons that the problems referred to above occur is to be the line Contact Transmission between master, Passive part and voussoir or the roller, and the contact stress of part is big, and distortion easy to wear causes transmitted power to descend, and self-locking is malfunctioning.
The purpose of this utility model be to avoid the deficiency of above-mentioned existence and provide that a kind of bearing capacity height, functional reliability are strong, the wedge key formula free wheel device of good manufacturability, long service life.
The purpose of this utility model is realized by following technological scheme: include outer shroud 1 and interior revolving meber 5, its difference is to be provided with sector unit 2 and corresponding offering and the radius wedge key groove of deflection mutually between outer shroud and interior revolving meber, install wedge key 3 in the wedge key groove, elastic component 4 is installed in a side of sector unit.
Press such scheme, the wedge key groove is opened in the place that connects of sector unit 2 and interior revolving meber 5, whole wedge key groove is oval shape or ellipse, the wedge key groove is 2 °-15 ° to the angle of yaw φ of a side, usually φ is 5 °-8 °, install oval shape or oval wedge key 3 in the wedge key groove with its phase configuration, make deflection return positive elastic component 4 being equipped with facing to sector unit one side of wedge key groove deflection direction, in addition, also the wedge key groove can be opened in the place that connects of sector unit and outer shroud, whole wedge key groove also is oval shape or ellipse, the wedge key groove is identical with said structure to the angle of yaw φ of a side, install oval shape or oval-shaped wedge key with its phase configuration in the wedge key groove, be equipped with in sector unit one side of carrying wedge key groove deflection direction and make deflection return positive elasticity to do 4.
Working mechanism of the present utility model is: when the outer shroud internal contrary wedge key deflection direction of revolving meber (n to) when rotating mutually, because the effect of elastic component and frictional force, make the wedge key backswing, angle of yaw φ dwindles, wedge key jack-up sector unit and outer shroud self-locking make outer shroud, sector unit, and wedge key and interior revolving meber are combined into an integral body, rotate with outer shroud, at this moment n
Outward=n
InWhen outer shroud mutually internally revolving meber when rotating, because the effect of frictional force, wedge key deflection increases along wedge key deflection direction (n to), the gap that has trace between sector unit and the outer shroud is a kind of relation movingly, and sector unit and outer shroud are separated, clutch is in and surmounts state, at this moment | and-n
Outward|＞|-n
In|.When wedge key was installed between outer shroud and the sector unit, difference was to realize self-locking and the function that surmounts by the folding between circular arc in the sector unit and the interior revolving meber, and its operation mechanism is identical with the operation mechanism of above-mentioned interior peripheral hardware wedge key structure.
Good effect of the present utility model is: 1, since between sector unit and outer shroud or the interior revolving meber for cambered surface contacts, area of contact is big, thereby the bearing capacity height, transmitted power is big, strong shock resistance; 2, because area of contact is big, and contact stress dwindles relatively, the parts wear distortion is little, and the clutch self-locking is stable, and wedge key is difficult for upset, so its functional reliability is strong, and long service life; 3, adopt sector unit and wedge key, simple in structure, component are easy to shape, its good manufacturability, and machining accuracy is controlled easily, makes the utility model possess the characteristic of the fabrication and processing of being easy to.
Fig. 1 also is the A-A sectional view among Fig. 2 for an embodiment's of the utility model the structural drawing of facing.
Fig. 2 is the complete section side view among Fig. 1.
Fig. 3 is another embodiment's of the utility model the structural drawing of facing.
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.Embodiment 1 is as Fig. 1, shown in 2, include identical outer shroud of gyration center 1 and interior revolving meber 5, interior revolving meber can be rotating shaft, it perhaps is interior ring, can offer keyway or spline in the interior ring, between outer shroud and interior revolving meber, leave an annular space, be installed on 3-8 piece sector unit 2 in the annular space, sector unit is 5 in the present embodiment, offer at sector unit and the place of connecting of interior revolving meber and the radius oval shape wedge key groove of deflection mutually, the angle of yaw φ of wedge key groove should equal the friction self-locking angle for a short time, and desirable φ is 8 °, is installed on the oval shape wedge key 3 with its phase configuration in the wedge key groove, be equipped with facing to a side of wedge key deflection direction at sector unit and make deflection return positive elastic component 4, elastic component can be spring or reed, and on the revolving meber, another elastic tip acted on a side of sector unit in an end of spring was fixed in, end cap 6 is installed on the both ends of the surface of outer shroud 1, end cap connects firmly by screw and outer shroud, and bearing 7 is installed in the end cap, supports the outer shroud revolution by it.
Claims (7)
1, a kind of wedge key formula free wheel device, include outer shroud (1) and interior revolving meber (5), it is characterized in that between outer shroud and interior revolving meber, being provided with sector unit (2) and corresponding offering and the radius wedge key groove of deflection mutually, install wedge key (3) in the wedge key groove, elastic component (4) is installed in a side of sector unit.
2, by the described wedge key formula of claim 1 free wheel device, it is characterized in that interior revolving meber (5) is rotating shaft or interior ring.
3, by claim 1 or 2 described wedge key formula free wheel devicees, it is characterized in that the wedge key groove is opened in the place that connects of sector unit (2) and interior revolving meber (5), whole wedge key groove is oval shape, the wedge key groove is 2 °-15 ° to the angle of yaw φ of a side, install the oval shape wedge key (3) with its phase configuration in the wedge key groove, be equipped with in sector unit one side and make deflection return positive elastic component (4) facing to wedge key groove deflection direction.
4, by the described wedge key formula of claim 3 free wheel device, it is characterized in that the wedge key groove is 5 °-8 ° to the angle of yaw φ of a side.
5, by the described wedge key formula of claim 3 free wheel device, it is characterized in that end cap (6) is installed on the both ends of the surface of outer shroud, bearing (7) is installed in the end cap.
6, by claim 1 or 2 described wedge key formula free wheel devicees, it is characterized in that the wedge key groove is opened in the place that connects of sector unit and outer shroud, whole wedge key groove is oval shape, install the oval shape wedge key with its phase configuration in the wedge key groove, be equipped with in sector unit one side of carrying wedge key groove deflection direction and make deflection return positive elastic component (4).
7, by claim 1 or 2 described wedge key formula free wheel devicees, be installed on 3-8 piece sector unit (2) in the annular space that it is characterized in that between outer shroud and interior revolving meber, leaving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99237180 CN2366611Y (en) | 1999-02-08 | 1999-02-08 | Wedging key type over-running clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99237180 CN2366611Y (en) | 1999-02-08 | 1999-02-08 | Wedging key type over-running clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2366611Y true CN2366611Y (en) | 2000-03-01 |
Family
ID=34024879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99237180 Expired - Fee Related CN2366611Y (en) | 1999-02-08 | 1999-02-08 | Wedging key type over-running clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2366611Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410315A (en) * | 2011-08-22 | 2012-04-11 | 王振良 | Non-contact reversion brake |
| CN110206861A (en) * | 2019-06-05 | 2019-09-06 | 重庆隆旺机电有限责任公司 | The speed changer of override type shift |
-
1999
- 1999-02-08 CN CN 99237180 patent/CN2366611Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410315A (en) * | 2011-08-22 | 2012-04-11 | 王振良 | Non-contact reversion brake |
| CN102410315B (en) * | 2011-08-22 | 2013-01-23 | 王振良 | Non-contact reversion brake |
| CN110206861A (en) * | 2019-06-05 | 2019-09-06 | 重庆隆旺机电有限责任公司 | The speed changer of override type shift |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |