CN202451745U - Novel gear anti-backlash speed reducer - Google Patents
Novel gear anti-backlash speed reducer Download PDFInfo
- Publication number
- CN202451745U CN202451745U CN2011204442050U CN201120444205U CN202451745U CN 202451745 U CN202451745 U CN 202451745U CN 2011204442050 U CN2011204442050 U CN 2011204442050U CN 201120444205 U CN201120444205 U CN 201120444205U CN 202451745 U CN202451745 U CN 202451745U
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- CN
- China
- Prior art keywords
- gear
- shaft
- output
- backlash
- transition
- 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 relates to a mechanical transmission device, and in particular relates to a novel gear anti-backlash speed reducer. The novel gear anti-backlash speed reducer comprises a box body, an input shaft, a middle shaft and an output shaft, wherein the input shaft, the middle shaft and the output shaft are arranged in the box body; the input shaft and the middle shaft are in transmission connection through a first transition gear mounted on the middle shaft; a second transition gear is further mounted on the middle shaft; the second transition gear and an output gear mounted on the output shaft are in transmission connection; the conical degree of the second transition gear and the conical degree of the output gear are same; an anti-backlash spring is further sleeved on the output shaft; and the anti-backlash spring is ejected and pressed on the output gear through a pressing cover. The novel gear anti-backlash speed reducer provided by the utility model uses a structure that a gear pair is matched with and the anti-backlash spring, wherein the conical degree of the gear pair and the conical degree of the anti-backlash spring are same, so that the speed reducer not only has a simple structure and convenience in manufacturing, but also can meet using requirements on large transmission ratio and high precision.
Description
Technical field
The utility model relates to a kind of mechanical transmission, especially a kind of new gear crack retarder that disappears.
Background technique
Continuous progress along with science and technology; Mechanical transmission is also constantly developed; Wherein retarder is popularized in all kinds of needs are used the product of mechanical transmission; Yet at present general retarder can influence the precision of transmission of movement owing to the existence of gear pair backlash, transverse tooth thickness and circular pitch error.For the mechanism of bidirectional movement, the influence of backlash is particularly outstanding.When driving gear reverses from just changing, at first to overcome backlash and could drive the follower running, like this angle that turns over just there has been error, must eliminate backlash so be used for the speed reducer of transmitting movement.Will reach high-precision gear transmission at present, gear and casing are had corresponding high-precision requirement, perhaps adopt the other crack method that disappears, the result causes processing difficulties, and cost increases.
Summary of the invention
The utility model provides a kind of simple in structure, easily manufactured in order to solve defective and the deficiency that above-mentioned existing technology exists, the new gear that can reach big speed ratio, the highi degree of accuracy usage requirement simultaneously again crack retarder that disappears.
The technological scheme of the utility model: a kind of new gear crack retarder that disappears; Comprise casing and be arranged on input shaft, jack shaft and the output shaft in the casing; First transition gear is in transmission connection on the jack shaft through being contained in for said input shaft and jack shaft; Second transition gear also is housed on the said jack shaft, and said second transition gear is in transmission connection with the output gear that is contained on the output shaft, and said second transition gear is identical with the tapering of output gear; Also be arranged with anti-backlash on the said output shaft, said anti-backlash passes through the gland roof pressure on output gear.
Preferably, said input shaft is a worm screw, and said first transition gear is a worm gear, and said worm and wheel forms worm gear pair.
Preferably, said output gear is fixed on the output shaft through spline.
Preferably, the reduction speed ratio of said worm gear pair is 72, and the velocity ratio of the gear pair that said second transition gear and output gear form is 5.
The utility model adopts the gear pair of identical tapering and the structure that anti-backlash cooperatively interacts, and makes retarder not only simple in structure, easily manufactured, can reach big speed ratio, highi degree of accuracy usage requirement simultaneously again.
Description of drawings
Fig. 1 is the structural representation of the utility model.
1. casings among the figure, 2. worm screw, 3. jack shaft, 4. output shaft, 5. worm gear, 6. second transition gear, 7. output gear, 8. anti-backlash, 9. gland, 10. spline.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation, but be not restriction the utility model protection domain.
As shown in Figure 1; A kind of new gear crack retarder that disappears comprises casing 1 and is arranged on input shaft, jack shaft 3 and the output shaft 4 in the casing 1 that first transition gear is in transmission connection on the jack shaft 3 through being contained in for input shaft and jack shaft 3; Input shaft is a worm screw 2; First transition gear is a worm gear 5, and worm screw 2 forms worm gear pair with worm gear 5, and the reduction speed ratio of worm gear pair is 72.Second transition gear, 6, the second transition gears 6 also are housed on the jack shaft 3 are in transmission connection with the output gear 7 that is contained on the output shaft 4, second transition gear 6 is 5 with the velocity ratio of the gear pair that output gear 7 forms.Second transition gear 6 is identical with the tapering of output gear 7, also is arranged with anti-backlash 8 on the output shaft 4, and anti-backlash 8 passes through gland 9 roof pressures on output gear 7.Output gear 7 is fixed on the output shaft 4 through spline 10.
When the standard pitch diameter of worm gear 5 is 108mm, backlash 0.05mm, then the error of second transition gear 6 on jack shaft 3 is 0.053 °; Promptly 3.18 '; After the transmission through gear pair, final reaction have only to the output shaft 4 error become 0.636 ', therefore can more accurate ground transmitting movement.
The utility model adopts the gear pair of identical tapering and the structure that anti-backlash cooperatively interacts, and makes retarder not only simple in structure, easily manufactured, can reach big speed ratio, highi degree of accuracy usage requirement simultaneously again.
Claims (4)
1. new gear crack retarder that disappears; Comprise casing and be arranged on input shaft, jack shaft and the output shaft in the casing; First transition gear is in transmission connection on the jack shaft through being contained in for said input shaft and jack shaft; Second transition gear also is housed on the said jack shaft, and said second transition gear is in transmission connection with the output gear that is contained on the output shaft, and it is characterized in that: said second transition gear is identical with the tapering of output gear; Also be arranged with anti-backlash on the said output shaft, said anti-backlash passes through the gland roof pressure on output gear.
2. a kind of new gear according to claim 1 crack retarder that disappears, it is characterized in that: said input shaft is a worm screw, and said first transition gear is a worm gear, and said worm and wheel forms worm gear pair.
3. a kind of new gear according to claim 1 crack retarder that disappears, it is characterized in that: said output gear is fixed on the output shaft through spline.
4. according to claim 1 or the 2 or 3 described a kind of new gears crack retarder that disappears, it is characterized in that: the reduction speed ratio of said worm gear pair is 72, and the velocity ratio of the gear pair that said second transition gear and output gear form is 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204442050U CN202451745U (en) | 2011-11-11 | 2011-11-11 | Novel gear anti-backlash speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204442050U CN202451745U (en) | 2011-11-11 | 2011-11-11 | Novel gear anti-backlash speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202451745U true CN202451745U (en) | 2012-09-26 |
Family
ID=46867611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204442050U Expired - Fee Related CN202451745U (en) | 2011-11-11 | 2011-11-11 | Novel gear anti-backlash speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202451745U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819259A (en) * | 2015-05-05 | 2015-08-05 | 中国科学院国家天文台南京天文光学技术研究所 | Low energy consumption and high precision transmission system suitable for South Pole telescope |
-
2011
- 2011-11-11 CN CN2011204442050U patent/CN202451745U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819259A (en) * | 2015-05-05 | 2015-08-05 | 中国科学院国家天文台南京天文光学技术研究所 | Low energy consumption and high precision transmission system suitable for South Pole telescope |
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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: 20120926 Termination date: 20151111 |
|
| EXPY | Termination of patent right or utility model |