CN203146649U - Nut and screw pre-tightened overrun clutch - Google Patents
Nut and screw pre-tightened overrun clutch Download PDFInfo
- Publication number
- CN203146649U CN203146649U CN 201320081130 CN201320081130U CN203146649U CN 203146649 U CN203146649 U CN 203146649U CN 201320081130 CN201320081130 CN 201320081130 CN 201320081130 U CN201320081130 U CN 201320081130U CN 203146649 U CN203146649 U CN 203146649U
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- CN
- China
- Prior art keywords
- nut
- transmission shaft
- drive wheel
- screw rod
- screw
- 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 discloses a nut and screw pre-tightened overrun clutch. A locking mechanism consisting of a set of nut and screw substitutes a wedge block or a pin roller of an ordinary clutch to realize the locking and combination or releasing and detachment between a driving shaft and a driving wheel of the clutch. The nut and screw pre-tightened overrun clutch can be flexibly combined, has overload resistance and an overload protection function, and meanwhile the nut and screw pre-tightened overrun clutch is simple in mechanism and easy to produce.
Description
Technical field
The utility model relates to a kind of novel mechanical transmission controllable mechanism, especially can control separating and combination of transmission shaft and drive wheel, realizes transmission and the interruption of power, belongs to machine industry.
Background technique
The existing free wheel device that uses with roller type He ?the piece formula exist force bearing point Shao ﹑ ?the piece multi-processing require Gao ﹑ can not be flexible in conjunction with and anti-overload ability a little less than wait some defectives.
Summary of the invention
Problem at the existence of prior art free wheel device, the utility model provides a kind of nut-screw prefastening free wheel device, the technical solution used in the present invention is: drive wheel (2) coaxial package is on transmission shaft (1), coaxial between transmission shaft (1) and the drive wheel (2) one group of locking tripping-gear of being made up of nut (3) and screw rod (4) is set, and hollow screw rod (4) coaxial package is on transmission shaft (1) external diameter, coaxial the screwing of nut (3) is sleeved on the screw rod (4), (one of them of 3) ﹑ screw rods (4) and transmission shaft (1) or drive wheel (2) fix described nut, there are not fixing and rotatable moving axially between one of them of described nut (3) or screw rod (4) and transmission shaft (1) the ﹑ drive wheel (2), when transmission shaft (1) is that driving link or drive wheel (2) are when rotating for driving link, by controlling moving axially of rotatable axially movable nut (3) or screw rod (4), difference by movement direction is respectively rotational lock transmission shaft (1) or drive wheel (2), or unclamps the tight lock to transmission shaft (1) or drive wheel (2);
It is fixed fixed with nut that described nut-screw prefastening free wheel device can be divided into screw rod by locking tripping-gear difference, the fixed scheme of screw rod: drive wheel (2) coaxial package is on transmission shaft (1), coaxial between transmission shaft (1) and the drive wheel (2) one group of locking tripping-gear of being made up of nut (3) and screw rod (4) is set, the cored screw of outer pitch thread (4) coaxial package and be fixed on transmission shaft (1) go up (cored screw (4) also can and transmission shaft (1) be combined into an integral body), nut (3) is coaxial screws on the screw rod (4), and the outer diametric plane coaxial package of nut (3) is in the large diameter of drive wheel (2), at nut (3) external diameter over glaze to being processed with keyway and being equipped with key (6), be provided with springs (7) between key (6) and keyway, the outer diametric plane of nut (3) applies pressure to key (6) by springs (7) and forces key (6) and drive wheel (2) large diameter friction, one of them is that driving link is during along plus thread direction or the rotation of left-hand thread direction when drive wheel (2) or transmission shaft (1), nut (3) also rotates together and nut (3) is moved axially, the rubbing surface (8) that nut this moment (3) moves axially near drive wheel (2) just can screw drive wheel (2), so just reached drive wheel (2) and transmission shaft (1) purpose of locking mutually, if opposite nut (3) moves axially towards opposite side move, just unclamped the locking mutually of drive wheel (2) and transmission shaft (1);
The fixed scheme of nut: drive wheel (2) coaxial package is on transmission shaft (1), coaxial between transmission shaft (1) and the drive wheel (2) one group of locking tripping-gear of being made up of nut (3) and screw rod (4) is set, the coaxial fixing female nut (3) of drive wheel (2) large diameter, the cored screw of outer pitch thread (4) coaxial package is on transmission shaft (1), and screw rod (4) is screwed into nut (3) lining, keyway is arranged and be equipped with key (6) the axial worker of screw rod (4) aperture surface, be provided with springs (7) between key (6) and keyway, screw rod (4) applies pressure to key (6) by springs (7) and forces the friction of key (6) and transmission shaft (1), one of them is that driving link is during along plus thread direction or the rotation of left-hand thread direction when drive wheel (2) or transmission shaft (1), screw rod (4) also rotates together and screw rod (4) is moved axially, the rubbing surface (8) that screw rod this moment (4) moves axially near transmission shaft (1) just can screw drive wheel (2), so just reached drive wheel (2) and transmission shaft (1) purpose of locking mutually, if opposite screw rod (4) moves axially towards opposite side move, just unclamped the locking mutually of drive wheel (2) and transmission shaft (1);
The beneficial effects of the utility model are: transmission shaft for initiatively the time or drive wheel for initiatively the time, nut or screw rod are screwed Contact Transmission axle or drive wheel under control strength drives, just be in the pretension state this moment, between wheel or axle and nut or the screw rod a certain amount of friction of skidding can be arranged, when two kinds of frictions just add big nut or screw rod locking strength, until the tight fully lock of axle and wheel.When driving force has moment overload and during greater than coupling mechanism force, transmission shaft and transmission shaft can a certain amount ofly skid.Therefore the present invention can flexible combination with drive wheel is combined the time at transmission shaft, and overload-resistant, and overload protection function is arranged, and mechanism simply is easy to production simultaneously.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples
Fig. 1 is the utility model first embodiment's (screw rod is fixed) structure cutaway view
Fig. 2 is the utility model first embodiment's (screw rod is fixed) assembling schematic representation
Fig. 3 is the utility model second embodiment's (nut is fixed) structure cutaway view
Fig. 4 is the utility model second embodiment's (nut is fixed) assembling schematic representation
Fig. 5 is the structure cutaway view of the utility model the 3rd embodiment (nut of external force control is fixed)
Among the figure: transmission shaft (1), drive wheel (2), nut (3), screw rod (4), positioning ring (5a ﹑ 5b ﹑ 5c), key (6), springs (7), rubbing surface (8), external intervention mechanism (9).
Embodiment
In Fig. 1, drive wheel (2) coaxial package is on transmission shaft (1), drive wheel (2) both sides be provided with positioning ring (5a ﹑ 5b) wherein (5a) for fixed, transmission shaft (1) can only radially rotate mutually and can not move axially with drive wheel (2) like this, the cored screw of outer pitch thread (4) coaxial package and be fixed on transmission shaft (1) go up (cored screw (4) also can and transmission shaft (1) be combined into an integral body), nut (3) is coaxial screws on the screw rod (4), and the outer diametric plane coaxial package of nut (3) is in the large diameter of drive wheel (2), at nut (3) external diameter over glaze to being processed with keyway and being equipped with key (6), be provided with springs (7) between key (6) and keyway, the outer diametric plane of nut (3) applies pressure to key (6) by springs (7) and forces key (6) and drive wheel (2) large diameter friction, one of them is that driving link is during along plus thread direction or the rotation of left-hand thread direction when drive wheel (2) or transmission shaft (1), nut (3) also rotates together and nut (3) is moved axially, this moment, nut (3) just can screw drive wheel (2) if move axially towards the rubbing surface (8) of drive wheel (2), so just reached drive wheel (2) and transmission shaft (1) purpose of locking mutually, if moving axially towards opposite side, moves on opposite nut (3), just unclamped the locking mutually of drive wheel (2) and transmission shaft (1), positioning ring (5c) the restriction nut (3) on the screw rod (4) continues to move axially;
Described nut (3) is that interior Ya Luo Wen ﹑ screw rod (4) is outer pitch thread, and the thread turns of interior pitch thread and outer pitch thread comprises that the above number of turns of a whole circle also comprises the shape of the thread turns that does not reach a whole circle; Described transmission shaft (1) is that solid axle also can be hollow axle.
Embodiment 2
In Fig. 3, drive wheel (2) coaxial package is on the big step external diameter of transmission shaft (1), drive wheel (2) both sides be provided with positioning ring (5a ﹑ 5b) wherein (5a) for fixed, transmission shaft (1) can only radially rotate mutually and can not move axially with drive wheel (2) like this, the coaxial fixing female nut (3) of drive wheel (2) large diameter, the cored screw of outer pitch thread (4) coaxial package is on transmission shaft (1), and coaxial nut (3) lining that is screwed into of screw rod (4), keyway is arranged and be equipped with key (6) the axial worker of screw rod (4) aperture surface, be provided with springs (7) between key (6) and keyway, screw rod (4) applies pressure to key (6) by springs (7) and forces the friction of key (6) and transmission shaft (1), one of them is that driving link is during along plus thread direction or the rotation of left-hand thread direction when drive wheel (2) or transmission shaft (1), screw rod (4) also rotates together and screw rod (4) is moved axially, this moment, screw rod (4) just can screw drive wheel (2) if move axially towards the rubbing surface (8) of transmission shaft (1), so just reached drive wheel (2) and transmission shaft (1) purpose of locking mutually, if moving axially towards opposite side, moves opposite screw rod (4), just unclamped the locking mutually of drive wheel (2) and transmission shaft (1), positioning ring (5c) the restriction screw rod (4) on the nut (3) continues to move axially;
Described nut (3) is that interior Ya Luo Wen ﹑ screw rod (4) is outer pitch thread, and the thread turns of interior pitch thread and outer pitch thread comprises that the above number of turns of a whole circle also comprises the shape of the thread turns that does not reach a whole circle; Described transmission shaft (1) is that solid axle also can be hollow axle.
In Fig. 5, drive wheel (2) coaxial package is on transmission shaft (1), drive wheel (2) both sides be provided with positioning ring (5a ﹑ 5b) wherein (5a) for fixed, transmission shaft (1) can only radially rotate mutually and can not move axially with drive wheel (2) like this, the cored screw of outer pitch thread (4) coaxial package and be fixed on transmission shaft (1) go up (cored screw (4) also can and transmission shaft (1) be combined into an integral body), nut (3) is coaxial screws on the screw rod (4), diametric plane connects external intervention mechanism (9) outside nut (3), one of them is that driving link is during along plus thread direction or the rotation of left-hand thread direction when drive wheel (2) or transmission shaft (1), external intervention mechanism (9) control nut (3) also rotates together and nut (3) is moved axially, this moment, nut (3) just can screw drive wheel (2) if move axially towards the rubbing surface (8) of drive wheel (2), so just reached drive wheel (2) and transmission shaft (1) purpose of locking mutually, if moving axially towards opposite side, moves on opposite nut (3), just unclamped the locking mutually of drive wheel (2) and transmission shaft (1), positioning ring (5c) the restriction nut (3) on the screw rod (4) continues to move axially;
Described nut (3) is that interior Ya Luo Wen ﹑ screw rod (4) is outer pitch thread, and the thread turns of interior pitch thread and outer pitch thread comprises that the above number of turns of a whole circle also comprises the shape of the thread turns that does not reach a whole circle; Described transmission shaft (1) is that solid axle also can be hollow axle.
Claims (3)
1. nut-screw prefastening free wheel device, which comprises at least transmission shaft (1) ﹑ drive wheel (2) ﹑ nuts (3) ﹑ screw rods (4), it is characterized in that: drive wheel (2) coaxial package is on transmission shaft (1), coaxial between transmission shaft (1) and the drive wheel (2) one group of locking tripping-gear of being made up of nut (3) and screw rod (4) is set, and hollow screw rod (4) coaxial package is on transmission shaft (1) external diameter, coaxial the screwing of nut (3) is sleeved on the screw rod (4), (one of them of 3) ﹑ screw rods (4) and transmission shaft (1) or drive wheel (2) fix described nut, there are not fixing and rotatable moving axially between one of them of described nut (3) or screw rod (4) and transmission shaft (1) the ﹑ drive wheel (2), when transmission shaft (1) is that driving link or drive wheel (2) are when rotating for driving link, by controlling moving axially of rotatable axially movable nut (3) or screw rod (4), difference by movement direction is respectively rotational lock transmission shaft (1) or drive wheel (2), or unclamps the tight lock to transmission shaft (1) or drive wheel (2); Described nut (3) is interior pitch thread, and screw rod (4) is outer pitch thread.
2. nut-screw prefastening free wheel device according to claim 1, it is characterized in that: described nut (3) is that interior Ya Luo Wen ﹑ screw rod (4) is outer pitch thread, and the thread turns of interior pitch thread and outer pitch thread comprises that the above number of turns of a whole circle also comprises the shape of the thread turns that does not reach a whole circle.
3. nut-screw prefastening free wheel device according to claim 1 is characterized in that: described transmission shaft (1) is solid axle or hollow axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320081130 CN203146649U (en) | 2012-04-27 | 2013-02-22 | Nut and screw pre-tightened overrun clutch |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220184946 | 2012-04-27 | ||
| CN201220184946.4 | 2012-04-27 | ||
| CN 201320081130 CN203146649U (en) | 2012-04-27 | 2013-02-22 | Nut and screw pre-tightened overrun clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146649U true CN203146649U (en) | 2013-08-21 |
Family
ID=48974175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320081130 Expired - Fee Related CN203146649U (en) | 2012-04-27 | 2013-02-22 | Nut and screw pre-tightened overrun clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203146649U (en) |
-
2013
- 2013-02-22 CN CN 201320081130 patent/CN203146649U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20150222 |
|
| EXPY | Termination of patent right or utility model |