CN203067738U - Disengaging and resetting mechanism for worm and gear - Google Patents
Disengaging and resetting mechanism for worm and gear Download PDFInfo
- Publication number
- CN203067738U CN203067738U CN 201220621754 CN201220621754U CN203067738U CN 203067738 U CN203067738 U CN 203067738U CN 201220621754 CN201220621754 CN 201220621754 CN 201220621754 U CN201220621754 U CN 201220621754U CN 203067738 U CN203067738 U CN 203067738U
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- CN
- China
- Prior art keywords
- worm
- eccentric bushing
- gear
- disengaging
- resetting
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Abstract
The utility model discloses a disengaging and resetting mechanism for a worm and a gear. The disengaging and resetting mechanism comprises a worm gear (7), a worm (6) and an eccentric bushing (5), bearings (4) are arranged at two ends of the eccentric bushing (5), the worm (6) is mounted in the bearings (4), one end, stretching out of the eccentric bushing (5), of the worm (6) is connected with a hand wheel (1), the worm gear (7) is arranged on the worm (6), and one end of the eccentric bushing (5) is connected with a switching hand wheel (2). According to the disengaging and resetting mechanism for the worm and the gear, a manual mode and an automatic mode are switched freely and are not influenced by environment factors, the disengaging and resetting mechanism for the worm and the gear is simple and convenient to machine and install, safe and reliable, and the defect that the operation mode of the disengaging and resetting mechanism is incompatible with gas operation is overcome.
Description
Technical field
The utility model relates to a kind of mechanism for unhitching and resetting, is specifically related to a kind of mechanism for unhitching and resetting worm wheel endless screw.
Background technique
Long-stroke pneumatic actuator in actual use, Chang Yinchu debugs examination, reasons such as device maintenance must manually-operable pneumatic actuator, so manual operating device is an indispensable part in pneumatic actuator.
In order to overcome manually and pneumatic non-interfering situation, must the manual mechanism for unhitching and resetting of a kind of worm and gear of design.Under auto state, cylinder piston promotes output shaft and rotates, and makes long stroke mechanism angle displacement, and at this moment manual pulley is disengaged condition, can be along with angular displacement be output as rotation, and safe and reliable.And when not having the source of the gas signal, need manually to control when finishing the action of angle displacement, manual pulley is reset mode, rotates handwheel, realizes long stroke mechanism angle displacement.This just needs a kind of safety, reliably manual mechanism for unhitching and resetting.
The model utility content
(1) technical problem that will solve
The technical problems to be solved in the utility model provides a kind of mechanism for unhitching and resetting worm wheel endless screw, and it moves pneumatic operation after realizing that in long stroke actuators handwheel is manually thrown off, and guarantees that handwheel maintains static in the pneumatic operation, and safety is reliable.And when source of the gas did not have signal, worm and gear can reset again, and the output of angular displacement is finished in manually-operable.
(2) technological scheme
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of mechanism for unhitching and resetting worm wheel endless screw, comprise worm gear (7), worm screw (6) and eccentric bushing (5), described eccentric bushing (5) two ends are provided with bearing (4), described snail worm screw (6) is installed in the described bearing (4) and the end that stretches out described eccentric bushing (5) is connected with handwheel (1), described worm screw (6) top is provided with described worm gear (7), and described eccentric bushing (5) one ends are connected with and switch handle (2).
Also comprise a location device, adjustment nut (9), spring (10), steel ball (11) in described positioning device comprises the through hole (15) be located on described eccentric bushing (5) end face and is installed on described through hole (15) and that link to each other successively, the side of casing (8) is provided with the semicircle orifice (12) suitable with described steel ball (11).
The end face of described eccentric bushing (5) is provided with curve bath (16), and described curve bath (16) lining is provided with position limit pin (3), and described position limit pin (3) is fixed on the described casing (8).
(3) beneficial effect
The utility model is compared to prior art, has following beneficial effect: manually, automatic mode switches freely, can not be subjected to Effect of Environmental, processes, install simple and conveniently, safe and reliable, overcome the shortcoming inconsistent with pneumatic operation.
Description of drawings
Fig. 1 is embodiment's of the present utility model structural representation.
Fig. 2 is the structural representation of the eccentric gearing structure of Fig. 1.
Fig. 3 is the enlarged view of " I portion " among Fig. 1.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, a kind of mechanism for unhitching and resetting worm wheel endless screw, comprise worm gear 7, worm screw 6 and eccentric bushing 5, eccentric bushing 5 two ends are provided with bearing 4, worm screw 6 is installed in the bearing 4 and the end that stretches out eccentric bushing 5 is connected with handwheel 1, worm screw 6 tops are provided with worm gear 7, and eccentric bushing 5 one ends are connected with and switch handle 2.Therefore endoporus place first center line 101 of switching handle, eccentric bushing 5 and second center line 102 at place, eccentric bushing 5 outer hole form eccentric structure not on same straight line.
As shown in Figure 3, also comprise a location device, adjustment nut 9, spring 10, steel balls 11 in positioning device comprises the through hole 15 be located on eccentric bushing 5 end faces and is installed on through hole 15 and that link to each other successively, the side of casing 8 are provided with the semicircle orifice 12 suitable with steel ball 11.On the casing 8 worm and gear throw off and the position that resets on a semicircle orifice 12 is respectively arranged, steel ball 11 is because the effect of spring 10 ejects forward, when rotating when switching handle 2 and driving eccentric bushings 5 and rotate, steel ball 11 can be decided to be respectively on semicircle orifice 12 and fix.
As shown in Figure 2, the end face of eccentric bushing 5 is provided with curve bath 16, and curve bath is provided with position limit pin 3 for 16 li, and position limit pin 3 is fixed on the casing 8.Position limit pin the rotation angle that has limited eccentric bushing is set, it only can be rotated in the several angle scope, reach and make this mechanism accurately switch the purpose of throwing off and resetting.
Because the external diameter of eccentric bushing and internal diameter are in eccentric position, drive worm screw and rotate with eccentric position, make worm screw promote a segment distance and worm gear meshes fully in short transverse.Rotate handwheel, worm screw drives worm gear and rotates, and the worm gear drives output shaft rotates, and manually finishes the output of angular displacement.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. mechanism for unhitching and resetting worm wheel endless screw, it is characterized in that: comprise worm gear (7), worm screw (6) and eccentric bushing (5), described eccentric bushing (5) two ends are provided with bearing (4), described worm screw (6) is installed in the described bearing (4) and the end that stretches out described eccentric bushing (5) is connected with handwheel (1), described worm screw (6) top is provided with described worm gear (7), and described eccentric bushing (5) one ends are connected with and switch handle (2).
2. mechanism for unhitching and resetting worm wheel endless screw according to claim 1, it is characterized in that: also comprise a location device, adjustment nut (9), spring (10), steel ball (11) in described positioning device comprises the through hole (15) be located on described eccentric bushing (5) end face and is installed on described through hole (15) and that link to each other successively, the side of casing (8) is provided with the semicircle orifice (12) suitable with described steel ball (11).
3. mechanism for unhitching and resetting worm wheel endless screw according to claim 2, it is characterized in that: the end face of described eccentric bushing (5) is provided with curve bath (16), described curve bath (16) lining is provided with position limit pin (3), and described position limit pin (3) is fixed on the described casing (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220621754 CN203067738U (en) | 2012-11-22 | 2012-11-22 | Disengaging and resetting mechanism for worm and gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220621754 CN203067738U (en) | 2012-11-22 | 2012-11-22 | Disengaging and resetting mechanism for worm and gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067738U true CN203067738U (en) | 2013-07-17 |
Family
ID=48766524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220621754 Expired - Fee Related CN203067738U (en) | 2012-11-22 | 2012-11-22 | Disengaging and resetting mechanism for worm and gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067738U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482928A (en) * | 2014-11-18 | 2015-04-01 | 北京兴华机械厂 | Release locking mechanism for azimuth axle of azimuth tracking cloud deck system |
| CN108895120A (en) * | 2018-07-06 | 2018-11-27 | 甘肃省机械科学研究院有限责任公司 | Bevel Gear Transmission pair engages disengaging gear |
-
2012
- 2012-11-22 CN CN 201220621754 patent/CN203067738U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482928A (en) * | 2014-11-18 | 2015-04-01 | 北京兴华机械厂 | Release locking mechanism for azimuth axle of azimuth tracking cloud deck system |
| CN108895120A (en) * | 2018-07-06 | 2018-11-27 | 甘肃省机械科学研究院有限责任公司 | Bevel Gear Transmission pair engages disengaging gear |
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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: 20130717 Termination date: 20151122 |
|
| EXPY | Termination of patent right or utility model |