CN101955135A - Portal crane rotation mechanism - Google Patents
Portal crane rotation mechanism Download PDFInfo
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- CN101955135A CN101955135A CN2009101441797A CN200910144179A CN101955135A CN 101955135 A CN101955135 A CN 101955135A CN 2009101441797 A CN2009101441797 A CN 2009101441797A CN 200910144179 A CN200910144179 A CN 200910144179A CN 101955135 A CN101955135 A CN 101955135A
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- output shaft
- bearing
- planetary reducer
- drive pinion
- friction coupling
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Abstract
The invention discloses a portal crane rotation mechanism, comprising a turntable. A planetary reducer is arranged at the upper end of the turntable and connected with a motor through a friction coupling; a brake is arranged on the friction coupling; an output shaft of the planetary reducer is arranged in the turntable and an output shaft case is arranged at the outer side of the output shaft; the output shaft is borne on the lower end of the output shaft case through an upper bearing; a driving pinion is arranged on the output shaft and meshed with a slewing bearing; a support is arranged on the lower end of the output shaft case; and the lower end of the output shaft is borne on the support through a lower bearing. The invention has the advantage that the bearing manner of the driving pinion at the lower end of the output shaft is changed from the cantilever type bearing manner to the upper side and lower side bearing manner so that the bending moment of the bearing part of the output shaft is half of the original and the service life of the output shaft is prolonged.
Description
Technical field
The present invention relates to a kind of span winch, relate in particular to a kind of rotating mechanism that is used on the span winch.
Background technology
Existing span winch rotating mechanism, comprise: the span winch rotating mechanism, comprise: rotating disk, upper end at rotating disk is provided with planetary reducer, planetary reducer is connected with electrical motor by friction coupling, friction coupling is provided with drg, the output shaft of planetary reducer is arranged in the rotating disk, arranged outside at output shaft has the output shaft casing, output shaft is bearing on the lower end of output shaft casing by head bearing, the lower end of output shaft is provided with Drive pinion, and Drive pinion is meshing with each other with the driven gear that is arranged on the swing bearing.Drive pinion is a cantilevered at the support pattern of output shaft lower end in the span winch rotating mechanism of said mechanism, causes the moment of flexure at output shaft supporting position bigger, and long-term use causes fatigue to make the output shaft fracture easily.Under the strong wind atmosphere or the situation of lift heavy emergency braking, bigger in addition to the impact of output shaft, also be easy to output shaft is ruptured, the service life of output shaft is shorter.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of service life long span winch rotating mechanism.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: the span winch rotating mechanism, comprise: rotating disk, upper end at rotating disk is provided with planetary reducer, planetary reducer is connected with electrical motor by friction coupling, friction coupling is provided with drg, the output shaft of planetary reducer is arranged in the rotating disk, arranged outside at output shaft has the output shaft casing, output shaft is bearing on the lower end of output shaft casing by head bearing, and output shaft is provided with Drive pinion, and Drive pinion and swing bearing are meshing with each other, the lower end of described output shaft casing is provided with bearing, and the lower end of output shaft is bearing on the bearing by lower bearing.
Advantage of the present invention is: the span winch rotating mechanism of this structure, change the support pattern of Drive pinion into two-side supporting up and down by original cantilevered in the output shaft lower end, make the moment of flexure of output shaft supporting part become original half, output shaft can correspondingly reduce, simultaneously, transmission between output shaft and the Drive pinion becomes pure torsion, Drive pinion can be cooperated better with driven gear on the swing bearing, under the strong wind atmosphere or the situation of drg braking, impact to output shaft is less, be not easy to make output shaft to rupture, prolonged the service life of output shaft.
Description of drawings
Fig. 1 is the structural representation of span winch rotating mechanism of the present invention.
Among the figure: 1, rotating disk, 2, planetary reducer, 3, friction coupling, 4, electrical motor, 5, drg, 6, output shaft, 7, the output shaft casing, 8, head bearing, 9, Drive pinion, 10, swing bearing, 11, bearing, 12, lower bearing.
The specific embodiment
Describe particular content of the present invention in detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the span winch rotating mechanism, comprise: rotating disk 1, be provided with planetary reducer 2 in the upper end of rotating disk 1, planetary reducer 2 is connected with electrical motor 4 by friction coupling 3, friction coupling 3 is provided with drg 5, the output shaft 6 of planetary reducer 2 is arranged in the rotating disk 1, arranged outside at output shaft 6 has output shaft casing 7, output shaft 6 is bearing in by head bearing 8 on the lower end of output shaft casing 7, and output shaft 6 is provided with Drive pinion 9, and Drive pinion 9 is meshing with each other with swing bearing 10, the lower end of described output shaft casing 7 is provided with bearing 11, and the lower end of output shaft 6 is bearing on the bearing 11 by lower bearing 12.
As shown in Figure 1, when the span winch rotating mechanism of said structure uses, driving planetary reducer 2 by electrical motor 4 by friction coupling 3 rotates, the output shaft 6 of planetary reducer 2 drives Drive pinion 9 and rotates, Drive pinion 9 is meshing with each other with swing bearing 10, rotates thereby drive swing bearing 10.The span winch rotating mechanism of said structure, change the support pattern of Drive pinion 9 into two-side supporting up and down by original cantilevered in output shaft 6 lower ends, make the moment of flexure of output shaft 6 supporting parts become original half, output shaft 8 can correspondingly reduce, simultaneously, transmission between output shaft 6 and the Drive pinion 9 becomes pure torsion, Drive pinion 9 can be cooperated better with swing bearing 10, under the strong wind atmosphere or the situation of drg 5 brakings, impact to output shaft 6 is less, be not easy to make output shaft 6 to rupture, prolonged the service life of output shaft 6.
Claims (1)
1. span winch rotating mechanism, comprise: rotating disk (1), be provided with planetary reducer (2) in the upper end of rotating disk (1), planetary reducer (2) is connected with electrical motor (4) by friction coupling (3), friction coupling (3) is provided with drg (5), the output shaft (6) of planetary reducer (2) is arranged in the rotating disk (1), arranged outside at output shaft (6) has output shaft casing (7), output shaft (6) is bearing on the lower end of output shaft casing (7) by head bearing (8), output shaft (6) is provided with Drive pinion (9), Drive pinion (9) is meshing with each other with swing bearing (10), it is characterized in that: the lower end of described output shaft casing (7) is provided with bearing (11), and the lower end of output shaft (6) is bearing on the bearing (11) by lower bearing (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101441797A CN101955135A (en) | 2009-07-20 | 2009-07-20 | Portal crane rotation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101441797A CN101955135A (en) | 2009-07-20 | 2009-07-20 | Portal crane rotation mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101955135A true CN101955135A (en) | 2011-01-26 |
Family
ID=43482768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101441797A Pending CN101955135A (en) | 2009-07-20 | 2009-07-20 | Portal crane rotation mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101955135A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557746A (en) * | 2013-10-12 | 2014-02-05 | 江西新余国科科技有限公司 | Steering gear convenient to use |
| CN104828715B (en) * | 2015-05-21 | 2016-06-29 | 青岛海西重机有限责任公司 | The mounting platform of gantry crane rotating mechanism |
| CN106800247A (en) * | 2017-04-06 | 2017-06-06 | 中船第九设计研究院工程有限公司 | A kind of gantry crane underneath type rotating mechanism |
| CN107656101A (en) * | 2017-09-27 | 2018-02-02 | 上海旻艾信息科技有限公司 | A kind of rotating mechanism for semiconductor test rotary frame |
-
2009
- 2009-07-20 CN CN2009101441797A patent/CN101955135A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557746A (en) * | 2013-10-12 | 2014-02-05 | 江西新余国科科技有限公司 | Steering gear convenient to use |
| CN103557746B (en) * | 2013-10-12 | 2016-01-20 | 江西新余国科科技有限公司 | Steering wheel easy to use |
| CN104828715B (en) * | 2015-05-21 | 2016-06-29 | 青岛海西重机有限责任公司 | The mounting platform of gantry crane rotating mechanism |
| CN106800247A (en) * | 2017-04-06 | 2017-06-06 | 中船第九设计研究院工程有限公司 | A kind of gantry crane underneath type rotating mechanism |
| CN107656101A (en) * | 2017-09-27 | 2018-02-02 | 上海旻艾信息科技有限公司 | A kind of rotating mechanism for semiconductor test rotary frame |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110126 |