CN102359548A - Worm gear-worm speed reducer with overload protection - Google Patents
Worm gear-worm speed reducer with overload protection Download PDFInfo
- Publication number
- CN102359548A CN102359548A CN2011102861853A CN201110286185A CN102359548A CN 102359548 A CN102359548 A CN 102359548A CN 2011102861853 A CN2011102861853 A CN 2011102861853A CN 201110286185 A CN201110286185 A CN 201110286185A CN 102359548 A CN102359548 A CN 102359548A
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- worm gear
- worm
- inner ring
- outer ring
- speed reducer
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Abstract
The invention relates to a worm gear-worm speed reducer with overload protection. An output shaft realizes output through the meshing of a worm and a worm gear. The worm gear comprises a worm gear inner ring and a worm gear outer ring; the worm gear outer ring is meshed with the worm; the worm gear inner ring is compressed in the worm gear outer ring by a spring and forms a contact friction state with the worm gear outer ring; and the worm gear inner ring is connected with the output shaft. The traditional worm gear is modified into the worm gear inner ring and the worm gear outer ring which are compressed by the spring; and the friction force between the worm gear inner ring and the worm gear outer ring is utilized to implement the speed reduction transmission, thus the output shaft is driven to realize output; and in overload input, the disconnection transmission is realized through the friction sliding between the worm gear inner ring and the worm gear outer ring, thus the output shaft stops outputting. The speed reducer has the function of overload protection, and has a long service life.
Description
Technical field
The present invention relates to a kind of worm-gear speed reducer, is a kind of worm-gear speed reducer with overload protection specifically.
Background technique
General worm-gear speed reducer does not have overload protection arrangement, because the special construction of worm and gear, it can not add overload protection outside, can only carry out the requirement of overload protection with internal structure.Like the disclosed overload protection worm speed reducer of patent No. CN96227133.0, the spring compression coupling makes coupling and worm screw interlock interlock, when apparatus overload; Worm screw is rotated and puts more effort, and coupling and worm screw produce to slide and cause worm screw not rotated, thereby control apparatus stops; Structure realizes overload protection internally, but the worm screw input end of speed reducer is a speed end, is in for a long time under the state by length of spring compressed coupling and worm screw interlock interlock; The overload protection component wear is big; Working life is short, and overload protection is unstable, uses speed reducer to be prone to lose efficacy for a long time.
Summary of the invention
In order to solve deficiency of the prior art, the invention provides a kind of worm-gear speed reducer with overload protection, these speed reducer overload features wearing and tearing are little, and long service life can guarantee that speed reducer uses for a long time and stable overload protection.
The technological scheme that the present invention adopts is: a kind of worm-gear speed reducer with overload protection; Export through output shaft by the worm meshing worm gear; It is characterized in that said worm gear comprises worm gear inner ring and worm gear outer ring; Worm gear outer ring and worm meshing, worm gear inner ring are pressed on the worm gear outer ring by spring and are and worm gear outer ring contact friction state, and the worm gear inner ring connects output shaft.When worm screw drives the input of worm gear outer ring; The worm gear outer ring drives the worm gear inner ring through friction and rotates, thereby drives output shaft output, and the friction size between worm gear inner ring and worm gear outer ring is adjusted by spring; When the frictional force that the worm gear inner ring is pressed on the worm gear outer ring when spring is not enough to keep the input of worm gear outer ring; Skid between worm gear inner ring and worm gear outer ring this moment, the speed reducer overload protection, and output shaft stops output services.
Further, said worm gear inner ring and worm gear outer ring are tapering pressing Frotteurism.
Further, said worm gear inner ring and worm gear outer ring pressing tapering are 5-15 °.
Again further; Said worm gear inner ring is made up of upper and lower inner ring, and last inner ring is through the key output shaft that is slidingly connected, and last inner ring is pressed on by spring and is in the worm gear outer ring and worm gear outer ring contact friction state; Following inner ring is fixedly connected output shaft through key, and following inner ring and worm gear outer ring are the contact friction state.Frictional force between worm gear inner ring and worm gear outer ring is made up of the frictional force between upper and lower inner ring and worm gear outer ring jointly; Friction between following inner ring and worm gear outer ring is fixed, and last inner ring is gone up frictional force between inner ring and worm gear outer ring through the spring adjustment, is satisfying under the speed reducer normal operation condition; The frictional force adjustment range diminishes between worm gear inner ring and worm gear outer ring; Can effectively improve degree of regulation, it is little to regulate component wear, long service life.
The present invention is modified into worm gear inner ring and worm gear outer ring by the spring pressing with traditional worm gear; Utilize the frictional force between worm gear inner ring and worm gear outer ring to realize gearing down, thereby drive output shaft output, simultaneously when the overload input; Utilize friction slip realization disconnection transmission between worm gear inner ring and worm gear outer ring; Thereby make output shaft stop output, this speed reducer has overload protection function, long service life.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure: worm screw 1, worm gear outer ring 2, last inner ring 3, following inner ring 4, output shaft 5, spring 6, adjusting nut 7.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
Shown in Figure 1, a kind of worm-gear speed reducer with overload protection comprises worm screw 1, worm gear outer ring 2, last inner ring 3, following inner ring 4, output shaft 5, spring 6 and adjusting nut 7.Worm screw 1 engagement 2 outer rings, worm gear outer ring; Upper and lower inner ring 3,4 all is arranged in the worm gear outer ring 2, and following inner ring 4 is fixedly connected output shaft 5 through key, and following inner ring 4 is the contact friction state with worm gear outer ring 2; Last inner ring 3 is through the key output shaft 5 that is slidingly connected; Last inner ring 3 lower ends and worm gear outer ring 2 are tapering pressing Frotteurism, 5-15 ° of pressing tapering, and last inner ring 3 upper ends are regulated pressing by spring 6 through adjusting nut 7.
Claims (4)
1. worm-gear speed reducer with overload protection; Export through output shaft by the worm meshing worm gear; It is characterized in that: said worm gear comprises worm gear inner ring and worm gear outer ring; Worm gear outer ring and worm meshing, worm gear inner ring are pressed on by spring and are in the worm gear outer ring and worm gear outer ring contact friction state, and the worm gear inner ring connects output shaft.
2. the worm-gear speed reducer of band overload protection according to claim 1 is characterized in that: said worm gear inner ring and worm gear outer ring are tapering pressing Frotteurism.
3. the worm-gear speed reducer of band overload protection according to claim 1 is characterized in that: 5-15 ° of said worm gear inner ring and worm gear outer ring pressing tapering.
4. according to the worm-gear speed reducer of claim 1 or 2 or 3 described band overload protections; It is characterized in that: said worm gear inner ring is made up of upper and lower inner ring; Last inner ring is through the key output shaft that is slidingly connected; Last inner ring is pressed on by spring and is in the worm gear outer ring and worm gear outer ring contact friction state, and following inner ring is fixedly connected output shaft through key, and following inner ring and worm gear outer ring are the contact friction state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102861853A CN102359548A (en) | 2011-09-24 | 2011-09-24 | Worm gear-worm speed reducer with overload protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102861853A CN102359548A (en) | 2011-09-24 | 2011-09-24 | Worm gear-worm speed reducer with overload protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102359548A true CN102359548A (en) | 2012-02-22 |
Family
ID=45584915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102861853A Pending CN102359548A (en) | 2011-09-24 | 2011-09-24 | Worm gear-worm speed reducer with overload protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102359548A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2077481U (en) * | 1990-08-08 | 1991-05-22 | 阎涛 | Rotating device of sucker rod with overload protector |
| CN2535383Y (en) * | 2002-04-11 | 2003-02-12 | 浙江箭环电器机械有限公司 | Cable drum speed reducer |
| CN2888182Y (en) * | 2006-04-19 | 2007-04-11 | 许晓华 | Gearbox with overload protection |
| CN201125970Y (en) * | 2007-11-26 | 2008-10-01 | 济南二机床集团有限公司 | Overload protection torque couplings and die-filling height adjusting apparatus |
| CN201671126U (en) * | 2010-05-26 | 2010-12-15 | 厦门大学 | Grader worm and gear overload protection device |
| CN201942472U (en) * | 2011-01-06 | 2011-08-24 | 西安东风仪表厂 | Spiral lifter with overload protection function |
| CN202228598U (en) * | 2011-09-24 | 2012-05-23 | 江苏泰隆减速机股份有限公司 | Worm gear worm speed reducer with overload protection |
-
2011
- 2011-09-24 CN CN2011102861853A patent/CN102359548A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2077481U (en) * | 1990-08-08 | 1991-05-22 | 阎涛 | Rotating device of sucker rod with overload protector |
| CN2535383Y (en) * | 2002-04-11 | 2003-02-12 | 浙江箭环电器机械有限公司 | Cable drum speed reducer |
| CN2888182Y (en) * | 2006-04-19 | 2007-04-11 | 许晓华 | Gearbox with overload protection |
| CN201125970Y (en) * | 2007-11-26 | 2008-10-01 | 济南二机床集团有限公司 | Overload protection torque couplings and die-filling height adjusting apparatus |
| CN201671126U (en) * | 2010-05-26 | 2010-12-15 | 厦门大学 | Grader worm and gear overload protection device |
| CN201942472U (en) * | 2011-01-06 | 2011-08-24 | 西安东风仪表厂 | Spiral lifter with overload protection function |
| CN202228598U (en) * | 2011-09-24 | 2012-05-23 | 江苏泰隆减速机股份有限公司 | Worm gear worm speed reducer with overload protection |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120222 |