CN2516751Y - Helical speed reducer - Google Patents
Helical speed reducer Download PDFInfo
- Publication number
- CN2516751Y CN2516751Y CN 01256873 CN01256873U CN2516751Y CN 2516751 Y CN2516751 Y CN 2516751Y CN 01256873 CN01256873 CN 01256873 CN 01256873 U CN01256873 U CN 01256873U CN 2516751 Y CN2516751 Y CN 2516751Y
- Authority
- CN
- China
- Prior art keywords
- pair
- speed reducer
- screw
- nut
- spline
- 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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- Transmission Devices (AREA)
Abstract
The utility model relates to a spiral speed reducer, belonging to a mechanical speed reducer or a mechanical torque booting devic, which is characterized in that a two-classification helical pair is used to achieve high speed-reduction ratio transmission. Because the pure rolling transmission is adopted inside the speed reducer, the speed reducer has high transmission efficiency. The speed reducer is of the shaft-sleeve structure, so the speed reducer has smaller dimension and size to achieve high speed-reduction ratio as well as high torque booster. Because of the movement limitation of the screw mandrel in the speed reducer, the utility model can only outcome the pendulum motion with a maximum pendulum angle plus or minus 180 degree. The utility model can be applied in remote control of switches for doors and windows as well as in the circumstances of plane aerofoil rotation, radar pick-up antenna pendulum, rocket aerofoil rotation and vessel vane rotation.
Description
Technical field:
The utility model belongs to mechanical reducer and mechanical booster moment device.Can be used for the Switch for door and window remote control unit, plane airfoil rotates, and the rocket aerofoil rotates, the radar receiving antenna swing, and the ships rudder face rotates.
Background technique:
The all not identical or device that is equal to of disclosed patent documentation and Chinese disclosed patent documentation in the period of the U.S. 1980-2001 by retrieval with the utility model.
Summary of the invention:
The purpose of this utility model is to provide a kind of rotation with prime mover, is converted to through first order screw pair to move axially, and is converted to the spiral speed reducer of rotation again through second level screw pair.Make that this retarder boundary dimension is little, reduction speed ratio is big, efficient is high, output torque is big.
In order to realize the purpose of above-mentioned model utility, its technological scheme is on the output shaft of power mechanism end cap to be housed, and this end cap is fixedlyed connected with the nut of first order screw pair.First and second grade screw pair and spline pair are distributed on the same axial straight line successively; The nut of first order screw pair is connected by thrust bearing respectively with the spline housing of spline pair with the nut of second level screw pair, the nut of second level screw pair; The screw mandrel section of first order screw pair, the screw mandrel section of second level screw pair and the splined shaft section of spline pair are an inseparable integral body, are positioned at the nut and the spline housing of two-stage screw pair accordingly; Leave the mobile space of screw mandrel section between the end of the screw mandrel section of first order screw pair and end cap, the lead angle of the screw mandrel of first and second grade screw pair is respectively α=2～15 °, β=70～85 °; On the screw mandrel section of first and second grade screw pair and in the nut, along its corresponding lead angle raceway is arranged respectively, in raceway separately, be distributed with ball, separately screw mandrel section is rolled with separately nut to be cooperated, in the splined shaft section and spline housing of spline pair, the raceway that parallels to the axis is arranged, be distributed with ball in the raceway, splined shaft section is rolled with spline housing cooperate.
The utlity model has following technique effect:
Reduction speed ratio is big, output torque is big, boundary dimension is little, simple in structure, easy to manufacture, cost is low.When a kind of external diameter of spiral speed reducer equals φ 100mm, length equals 400mm, and when weight equaled 10kg, the moment of output reached 12000Nm.
Description of drawings:
Fig. 1 is the assembly structure figure of this retarder.
Embodiment:
End cap [2] is housed on the output shaft of prime mover [1], end cap [2] is fixed on the nut [3] of first order screw pair, the screw mandrel section [4-1] of its first order screw pair is distributed on the same axis with the splined shaft section [4-3] of the screw mandrel section [4-2] of second level screw pair and spline pair, forms inseparable integral body.The lead angle of first and second of a kind of retarder grade screw pair is respectively α=5 °, β=75 °, and their external diameter is 100mm.Nut [6] one ends of second level screw pair are connected with the nut [3] of first order screw pair by thrust bearing [5], and the spline housing of spline pair [7] is connected by the other end of thrust bearing with the nut [6] of second level screw pair.In the raceway of the splined shaft section [4-3] of the screw mandrel section [4-1] of first and second grade screw pair, [4-2], spline pair, be distributed with ball, upward and on the screw mandrel section [4-2] nut [3], [6] are housed respectively in screw mandrel section [4-1], on the splined shaft section [4-3] of spline pair, spline housing [7] are housed.All relative movement pairs in spiral speed reducer are rolling friction pair, and this retarder has been realized the pure rolling transmission.
The transmission process of spiral speed reducer is as follows:
Prime mover [1] is by end cap [2], drive nut [3] and make high speed rotating, nut [3] drives screw mandrel section [4-1] and moves axially as low speed, the realization first order is slowed down, drive screw mandrel section [4-2] simultaneously, splined shaft section [4-3] moves axially, simultaneously, screw mandrel section [4-2] drives second nut [6] and rotates, slow down in the realization second level, rotatablely moving of this retarder exported by nut [6].Thrust bearing [5] restriction nut [6] can only rotate, and can not move axially.Spline pair [7,4-3] restriction screw mandrel [4] can only move axially, and can not rotate; The moment of reaction that external load produces is passed to screw mandrel [4-2] by nut [6], passes to support through spline housing [7] again.
The maximum output corner of this retarder is 180 °, is applicable to that needing reciprocally swinging part, its maximum pendulum angle is ± 180 °.
Claims (4)
1. a spiral speed reducer comprises power mechanism; It is characterized in that on the output shaft of power mechanism end cap being housed, this end cap is fixedlyed connected with the nut of first order screw pair; First and second grade screw pair and spline pair are distributed on the same axial straight line successively, and the nut of first order screw pair is connected by thrust bearing respectively with the spline housing of spline pair with the nut of second level screw pair, the nut of second level screw pair; The screw mandrel section of first order screw pair, the screw mandrel section of second level screw pair and the splined shaft section of spline pair are an inseparable integral body, are positioned at nut and spline housing that two-stage screw is paid accordingly; Between the end and end cap of the screw mandrel section of first order screw pair, leave the mobile space of screw mandrel section, the lead angle of the screw mandrel section of first and second grade screw pair is respectively α=2～15 °, β=70～85 °; On the screw mandrel section of first and second grade screw pair and in the nut, along its corresponding lead angle raceway is arranged respectively, in raceway separately, be distributed with ball, separately screw mandrel section is rolled with separately nut to be cooperated, on the splined shaft section of spline pair and in the spline housing, the raceway that parallels to the axis is arranged, be distributed with ball in the raceway, splined shaft section is rolled with spline housing cooperate.
2. spiral speed reducer according to claim 1, the lead angle that it is characterized in that first and second grade screw pair are respectively α=5 °, β=75 °.
3. spiral speed reducer according to claim 1 is characterized in that first and second grade screw pair and spline pair have same middle footpath.
4. spiral speed reducer according to claim 1 is characterized in that all the relative movement pairs in this retarder are rolling friction pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01256873 CN2516751Y (en) | 2001-12-10 | 2001-12-10 | Helical speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01256873 CN2516751Y (en) | 2001-12-10 | 2001-12-10 | Helical speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2516751Y true CN2516751Y (en) | 2002-10-16 |
Family
ID=33665741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01256873 Expired - Fee Related CN2516751Y (en) | 2001-12-10 | 2001-12-10 | Helical speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2516751Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465844C (en) * | 2005-06-02 | 2009-03-04 | 重庆大学 | Precision rotation angle mechanism |
| CN106895123A (en) * | 2015-12-18 | 2017-06-27 | 熵零技术逻辑工程院集团股份有限公司 | A kind of transmission device |
-
2001
- 2001-12-10 CN CN 01256873 patent/CN2516751Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465844C (en) * | 2005-06-02 | 2009-03-04 | 重庆大学 | Precision rotation angle mechanism |
| CN106895123A (en) * | 2015-12-18 | 2017-06-27 | 熵零技术逻辑工程院集团股份有限公司 | A kind of transmission device |
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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 |