CN201148103Y - Circular arc structure of universal wheel rolling body slot - Google Patents
Circular arc structure of universal wheel rolling body slot Download PDFInfo
- Publication number
- CN201148103Y CN201148103Y CNU2008200011311U CN200820001131U CN201148103Y CN 201148103 Y CN201148103 Y CN 201148103Y CN U2008200011311 U CNU2008200011311 U CN U2008200011311U CN 200820001131 U CN200820001131 U CN 200820001131U CN 201148103 Y CN201148103 Y CN 201148103Y
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- China
- Prior art keywords
- groove
- wall
- ball
- rolling body
- contact
- 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 discloses a circular arc structure for a universal-wheel rolling-element ball-groove. An inner wall and an outer wall extend out of the top end of the universal-wheel bracket, and the front end of the outer wall extends downward to form a groove extruding outward after the outer wall extends outward by a certain distance; after downward extrusion by a certain distance, the front end of the inner wall extends outward to form a groove recessing inward. The concave sides of the two grooves correspond to each other and form a ball groove, and the ball groove is divided into two ball grooves by another wall extruding out on the bracket, and steel balls are arranged in the ball groove. The rolling-element ball-groove is in a circular arc structure. The concave side of the groove formed by the outer wall and the inner wall of the ball groove is in a circular-arc shape. The radius of the ball groove is greater than the radius of the steel ball. The ball groove can be changed into a circular-arc structure to prolong the service life of the universal-wheel. In case of small load, the contact points appear as point-contact; in case of big load, the contact points appear as linear contact due to the deformation of the ball groove and steel balls under the action of stress, the contact area is increased and the contact stress is reduced effectively, and the service life of the ball groove is prolonged.
Description
Affiliated technical field
The utility model relates to a kind of cardan wheel structural development, particularly a kind of cardan wheel rolling body bullet groove arc-shaped structure.
Background technology
Traditional cardan wheel rolling body bullet groove all is a rectangular shaped, and as shown in Figure 1, though this bullet groove structure friction force is little, because area of contact is little, when load was big, contact stress was too big, plays groove and is easy to damage, and the life-span of cardan wheel is shorter.
Summary of the invention
The utility model provides a kind of arc-shaped structure of cardan wheel rolling body bullet groove, and purpose solves the prior art problem, and providing a kind of can increase the cardan wheel rolling body bullet groove structure in service life.
The utility model technical scheme that adopts of dealing with problems is:
The arc-shaped structure of cardan wheel rolling body bullet groove, inside and outside two layers of walls is extended on its caster bracket top, and outer wall stretches out behind the segment distance, and its front end extends to form outer emboss pit again downwards; After inwall extends a segment distance downwards, its front end stretches out again and forms the indent groove, two corresponding mutually formation of groove concave surface play groove, described bullet groove is divided into inside and outside two by other extended wall on the support and plays groove, play in the groove and be provided with steel ball, it is characterized in that: described rolling body bullet groove is an arc-shaped structure.
The groove concave surface that described bullet groove outer wall and inwall form is circular arc.
Play groove radius greater than the steel ball radius.
The beneficial effects of the utility model are: will play groove and change arc-shaped structure into, and can prolong the life-span of cardan wheel.When load hour, contact point is a contact, and when load increased, because the bullet groove under stress and the distortion of steel ball, contact point was the line contact, and actv. has increased area of contact and reduced contact stress, has prolonged the life-span that plays groove.
Description of drawings
Fig. 1 is traditional cardan wheel structural representation
Fig. 2 is the utility model structural representation
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 2, the arc-shaped structure of cardan wheel rolling body bullet groove, inside and outside two layers of walls 2,1 is extended on its caster bracket 5 tops, and outer wall 1 stretches out behind the segment distance, and its front end extends to form outer emboss pit again downwards; After inwall 2 extends a segment distance downwards, its front end stretches out again and forms the indent groove, and two corresponding mutually formation of groove concave surface play groove, play groove 4 and the outer groove 3 that plays in described bullet groove is divided into by other extended wall 6 on the support, play in the groove and be provided with steel ball, play groove radius greater than steel ball 7,8 radiuses.Described rolling body bullet groove is an arc-shaped structure, and the groove concave surface that promptly plays groove outer wall 1 and inwall 2 formation is circular arc.
When load hour, steel ball and the contact point of concave surface are and contact, and when load increased, because the bullet groove under stress and the distortion of steel ball, contact point was the line contact, and actv. has increased area of contact and reduced contact stress, has prolonged the life-span that plays groove.
Claims (3)
1. the arc-shaped structure of cardan wheel rolling body bullet groove, inside and outside two layers of walls is extended on its caster bracket top, and outer wall stretches out, and its front end extends to form outer emboss pit again downwards behind the segment distance; Inwall extends downwards behind the segment distance its front end and stretches out again and form the indent groove, two corresponding mutually formation of groove concave surface play groove, described bullet groove is divided into inside and outside two by other extended wall on the support and plays groove, play in the groove and be provided with steel ball, it is characterized in that: described rolling body bullet groove is an arc-shaped structure.
2. cardan wheel rolling body bullet groove structure as claimed in claim 1 is characterized in that: the groove concave surface that described bullet groove outer wall and inwall form is circular arc.
3. cardan wheel rolling body bullet groove structure as claimed in claim 1 is characterized in that: play groove radius greater than the steel ball radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200011311U CN201148103Y (en) | 2008-01-17 | 2008-01-17 | Circular arc structure of universal wheel rolling body slot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200011311U CN201148103Y (en) | 2008-01-17 | 2008-01-17 | Circular arc structure of universal wheel rolling body slot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201148103Y true CN201148103Y (en) | 2008-11-12 |
Family
ID=40115869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200011311U Expired - Fee Related CN201148103Y (en) | 2008-01-17 | 2008-01-17 | Circular arc structure of universal wheel rolling body slot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201148103Y (en) |
-
2008
- 2008-01-17 CN CNU2008200011311U patent/CN201148103Y/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 |
Granted publication date: 20081112 Termination date: 20160117 |
|
| EXPY | Termination of patent right or utility model |