CN202360716U - Stress sharing structure of worm bearing of worm gear case - Google Patents
Stress sharing structure of worm bearing of worm gear case Download PDFInfo
- Publication number
- CN202360716U CN202360716U CN201120460438XU CN201120460438U CN202360716U CN 202360716 U CN202360716 U CN 202360716U CN 201120460438X U CN201120460438X U CN 201120460438XU CN 201120460438 U CN201120460438 U CN 201120460438U CN 202360716 U CN202360716 U CN 202360716U
- Authority
- CN
- China
- Prior art keywords
- worm
- bearing
- gear case
- worm gear
- sharing structure
- 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 stress sharing structure of a worm bearing of a worm gear case, belonging to the technical field of valve drive. A deep groove ball bearing and a bushing are arranged from inside to outside in a space formed by two ends of a screw and a front cover, wherein a thrust bearing is arranged in an annular space formed by the screw and the bushing. The stress sharing structure is simple structure, is convenient to install and has high mechanical efficiency.
Description
Technical field
The utility model relates to a kind of valve driving technical field, relates in particular to a kind of stressed structure of sharing of worm bearing of Worm gear case.
Background technique
Existing Worm gear case comprises casing, case lid, worm gear, worm screw, worm bearing, handwheel, stop screw, worm screw front and rear covers.In use, rotation hand wheel drives the worm screw rotation, converts the rotation of worm gear into through the rotation of worm and gear adjutant worm screw, the worm gear drives valve rod, thus realize the opening and closing of valve.Existing worm bearing structure is as shown in Figure 3, and the worm screw two ends respectively are provided with a tapered roller bearing and deep groove ball bearing, and worm screw shown in Figure 4 two ends respectively are provided with a tapered roller bearing.Because worm couple can make worm screw produce very big axial force F, because tapered roller bearing gets separability, and cone angle is all smaller; In actual use, the positive pressure between the roller of tapered roller bearing and inner ring, the outer ring is obviously greater than axial force, under lubricated constant situation; The value of the frictional force between roller and inner ring, the outer ring is inevitable also can be bigger; Thereby reduced the mechanical efficiency of Worm gear case, promptly under the constant situation of output torque, increased input torque.If input end adopts YE, will certainly increase power of motor, caused unnecessary waste.
The model utility content
The utility model is to above-mentioned defective, and purpose is to provide a kind of stressed structure of sharing of worm bearing of simple in structure, easy for installation, Worm gear case that mechanical efficiency is high.
The technological scheme of the utility model employing is for this reason: the space that worm screw two ends and protecgulum form is respectively equipped with deep groove ball bearing and lining from inside to outside, is provided with thrust-bearing in the annular space that said worm screw and lining form.
The utility model has the advantages that: the utility model is simple in structure, easy for installation, and mechanical efficiency is high.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the utility model ssembly drawing.
Fig. 3, Fig. 4 are two kinds of different structure forms of existing technology.
1 is that protecgulum, 2 is that lining, 3 is that thrust-bearing, 4 is that deep groove ball bearing, 5 is worm screw among the figure.
Embodiment
Worm screw two ends and protecgulum 1 formed space are respectively equipped with deep groove ball bearing 4 and lining 2 from inside to outside, are provided with thrust-bearing 3 in the annular space that said worm screw 5 and lining 2 form.When Worm gear case is worked; Worm screw 5 produces axial force; Because deep groove ball bearing 4 outer rings are by lining 2 axial restraints, inner ring is little vertically to be moved, when inner ring is run into thrust-bearing 3 and stopped little moving; Thrust-bearing 3 begins to bear the axial force that worm screw 5 produces, thereby has realized that worm screw 5 produces sharing of axial force.
Claims (1)
1. the stressed structure of sharing of the worm bearing of a Worm gear case is characterized in that, the space that worm screw two ends and protecgulum form is respectively equipped with deep groove ball bearing and lining from inside to outside, is provided with thrust-bearing in the annular space that said worm screw and lining form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120460438XU CN202360716U (en) | 2011-11-18 | 2011-11-18 | Stress sharing structure of worm bearing of worm gear case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120460438XU CN202360716U (en) | 2011-11-18 | 2011-11-18 | Stress sharing structure of worm bearing of worm gear case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360716U true CN202360716U (en) | 2012-08-01 |
Family
ID=46571905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120460438XU Expired - Fee Related CN202360716U (en) | 2011-11-18 | 2011-11-18 | Stress sharing structure of worm bearing of worm gear case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360716U (en) |
-
2011
- 2011-11-18 CN CN201120460438XU patent/CN202360716U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20191118 |