CN204644984U - A kind of dark lever brake door screw nut driving device - Google Patents
A kind of dark lever brake door screw nut driving device Download PDFInfo
- Publication number
- CN204644984U CN204644984U CN201520294100.XU CN201520294100U CN204644984U CN 204644984 U CN204644984 U CN 204644984U CN 201520294100 U CN201520294100 U CN 201520294100U CN 204644984 U CN204644984 U CN 204644984U
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- sleeve
- screw mandrel
- nut
- driving device
- screw
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Abstract
The utility model relates to a kind of dark lever brake door screw nut driving device.Comprise the screw mandrel be connected with headstock gear, described screw mandrel overcoat has a sleeve, and described sleeve lower end is connected with gate, described sleeve lower end is blind end, connect a nut in the inwall of described sleeve upper end, described nut sleeve is connected on screw mandrel, and described screw mandrel lower end is positioned at sleeve.The utility model structure is simple, can enter in screw nut driving pair by scum silica frost in effectively anti-sealing, ensure that screw mandrel and nut can not kill phenomenon, thus gate can normally be opened and closed, extend application life.
Description
Technical field
The utility model relates to a kind of dark lever brake door screw nut driving device, belongs to hydraulic engineering equipment technical field.
Background technology
Steel-slag sand is normally used for opening and closing the bascule crossing the mouth of a river in the hydraulic structure of local, and be generally used for for dock pump house, switching motion is more frequent.Traditional dark bar steel-slag sand is that nut is set in upper end in steel-slag sand door body, to form screw nut driving secondary just engaging with nut bottom for headstock gear screw mandrel active section, when steel-slag sand door body open rise open or descending closed time, screw rod transmission and nut is motionless, thus make steel-slag sand door body increase or decline, realize opening and closing movement.Because screw mandrel and nut transmission work under water, lubrication oil is easily lost in water, and apply oil is very inconvenient under water.The loss of lubrication oil, causes the premature abrasion of screw mandrel and nut transmission, and in water, scum silica frost also easily penetrates in nut transmission simultaneously, thus causes killing between screw mandrel and nut transmission, and steel-slag sand cannot be opened.
Utility model content
For above-mentioned defect, the purpose of this utility model is to provide a kind of structure simple, can enter in screw nut driving device by scum silica frost in anti-sealing, ensure the one dark lever brake door screw nut driving device of not killing phenomenon between screw mandrel and nut.
The technical scheme that the utility model adopts for this reason is:
Comprise the screw mandrel be connected with headstock gear, described screw mandrel overcoat has a sleeve, and described sleeve lower end is connected with gate, described sleeve lower end is blind end, connect a nut in the inwall of described sleeve upper end, described nut sleeve is connected on screw mandrel, and described screw mandrel lower end is positioned at sleeve.
Further, described nut and sleeve upper end inwall fit system are interference fit.
Further, described screw mandrel lower end is connected with baffle plate, and described baffle plate diameter is greater than screw mandrel diameter, and described baffle plate diameter is less than sleeve lining diameter.
The utility model has the advantages that:
The utility model structure is simple, can enter in screw nut driving pair by scum silica frost in effectively anti-sealing, ensure that screw mandrel and nut can not kill phenomenon, thus gate can normally be opened and closed, extend application life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1 be screw mandrel, 2 are sleeves, 3 are nuts, 4 is baffle plates.
Detailed description of the invention
A kind of dark lever brake door screw nut driving device, comprise the screw mandrel 1 be connected with headstock gear, described screw mandrel 1 overcoat has a sleeve 2, described sleeve 2 lower end is connected with gate, described sleeve 2 lower end is blind end, a nut 3 is connect in the inwall of described sleeve 2 upper end, described nut 3 is socketed on screw mandrel 1, described screw mandrel 1 lower end is positioned at sleeve 2, described nut 3 is interference fit with sleeve 2 upper end inwall fit system, described screw mandrel 1 lower end is connected with baffle plate 4, and described baffle plate 4 diameter is greater than screw mandrel 1 diameter, and described baffle plate 4 diameter is less than sleeve 2 inner diameter.
Claims (3)
1. a dark lever brake door screw nut driving device, it is characterized in that, comprise the screw mandrel be connected with headstock gear, described screw mandrel overcoat has a sleeve, described sleeve lower end is connected with gate, and described sleeve lower end is blind end, connects a nut in the inwall of described sleeve upper end, described nut sleeve is connected on screw mandrel, and described screw mandrel lower end is positioned at sleeve.
2. one according to claim 1 dark lever brake door screw nut driving device, is characterized in that, described nut and sleeve upper end inwall fit system are interference fit.
3. one according to claim 1 dark lever brake door screw nut driving device, is characterized in that, described screw mandrel lower end is connected with baffle plate, and described baffle plate diameter is greater than screw mandrel diameter, and described baffle plate diameter is less than sleeve lining diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520294100.XU CN204644984U (en) | 2015-05-08 | 2015-05-08 | A kind of dark lever brake door screw nut driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520294100.XU CN204644984U (en) | 2015-05-08 | 2015-05-08 | A kind of dark lever brake door screw nut driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204644984U true CN204644984U (en) | 2015-09-16 |
Family
ID=54097742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520294100.XU Active CN204644984U (en) | 2015-05-08 | 2015-05-08 | A kind of dark lever brake door screw nut driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204644984U (en) |
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2015
- 2015-05-08 CN CN201520294100.XU patent/CN204644984U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |