CN202063507U - Electric roller - Google Patents
Electric roller Download PDFInfo
- Publication number
- CN202063507U CN202063507U CN2011201498961U CN201120149896U CN202063507U CN 202063507 U CN202063507 U CN 202063507U CN 2011201498961 U CN2011201498961 U CN 2011201498961U CN 201120149896 U CN201120149896 U CN 201120149896U CN 202063507 U CN202063507 U CN 202063507U
- Authority
- CN
- China
- Prior art keywords
- ratchet
- ratchets
- holdback
- overcoat
- motorized pulleys
- 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 an electric roller, which comprises a brake, wherein the brake comprises a ratchet wheel which is fixed relative to a main shaft, and an outer cover which is covered at the outer part of the ratchet wheel and is fixed relative to a roller, a plurality of ratchets are distributed on the outer periphery of the ratchet wheel, a ball is respectively arranged between adjacent ratchets, the balls are contacted and matched with the inner wall of the outer cover, the ratchets are respectively in a halfpace shape, and the ratchets and the inner wall of the outer cover are in surface contact. In the electric roller disclosed by the utility model, the brake arranged in the interior has a simple structure and a long service life, not only can prevent the roller from reversely rotating, but also is convenient to maintain.
Description
Technical field
The utility model relates to a kind of device for transporting objects, relates in particular to a kind of motorized pulleys that are used for belt conveyer or lifting means.
Background technology
Motorized pulleys are widely used in departments such as mine, metallurgy, chemical industry, coal, building materials, electric power, grain and communications and transportation as the power of equipment such as belt transporter and lifting.Installation form has electric machine built-in, external and portable.When convey materials, use holdback through regular meeting in order to prevent that motorized pulleys from reversing with respect to motor shaft.
For example disclose a kind of motorized pulleys, had high speed shaft and cylinder extend neck, between high speed shaft and the cylinder extend neck ratchet holdback has been set with backstop in Chinese utility model 200720043254.7.Referring to Fig. 1, this holdback is by the ratchet 4 that is fixed on the main shaft 2, and be wrapped in the exterior overcoats 1 of ratchet 4 and constitute, overcoat 1 is fixed with respect to cylinder, overcoat 1 is hinged with the non-return pin 6 that can swing, only allow overcoat 1 to be rotated in the forward with respect to main shaft 2 under the qualification of non-return pin 6, but the stress that mono-non-return pin 6 is subjected to is bigger, fatiguability is impaired.
Ratchet is roughly the pinnacle in addition, and ratchet is the edge, top on pinnacle with contacting of outer casing inner wall, is the line contact, and the intensity of ratchet is subjected to certain influence.
The utility model content
The utility model provides a kind of motorized pulleys, and its inside has been installed simple in structure, and intensity is good, the holdback of long service life, can prevent the counter-rotating of cylinder.
A kind of motorized pulleys, comprise holdback, described holdback comprises the ratchet that relative main shaft is fixing, and be wrapped in the exterior overcoat fixing of ratchet with respect to cylinder, the excircle of described ratchet is distributed with some ratchets, is provided with ball between the adjacent ratchet, the ball cooperation that contacts with the inwall of overcoat, described ratchet is a trapezoidal shape, contacts for face between ratchet and the outer casing inner wall.
Prior art can be adopted in the installation site of the holdback in the utility model motorized pulleys, focus on having made non-return pin of the prior art into ball, when cylinder drives mantle reversal, ball along and its contacted ratchet inclined-plane gradually with tensioner between overcoat and the ratchet, make the overcoat can't be with respect to the main shaft contrarotation.
The excircle of described ratchet is evenly distributed with 6～16 ratchets.Suitable ratchet quantity can be dispersed in expanding force each position of ratchet uniformly.
As preferably, the excircle of described ratchet is evenly distributed with 6～10 ratchets.
The ratchet intensity height of trapezoidal shape is out of shape in the time of can avoiding being subjected to the ball extruding.
The utility model motorized pulleys, its inner holdback of installing is simple in structure, and long service life not only can prevent the counter-rotating of cylinder but also easy to maintenance.
Description of drawings
Fig. 1 is the structural representation of the holdback of motorized pulleys in the prior art;
Fig. 2 is the structural representation of holdback in the utility model motorized pulleys.
The specific embodiment
Referring to Fig. 2, in the utility model motorized pulleys holdback is installed, be holdback owing to improve, therefore omit other parts.
Holdback comprises the ratchet 4 that relative main shaft 2 is fixing, and is wrapped in the ratchet 4 exterior overcoats 1 fixing with respect to cylinder, and the excircle of ratchet 4 is distributed with some ratchets, is provided with ball 3 between the adjacent ratchet, ball 3 cooperation that contacts with the inwall of overcoat 1.
In the present embodiment, the excircle of ratchet 4 is evenly distributed with 8 ratchets, (for example ratchet 4 is motionless among the figure when cylinder drives overcoat 1 with respect to ratchet 4 counter-rotatings, overcoat 1 left-hand revolution), ball 3 the drive lower edge of overcoat 1 inwall and its contacted ratchet inclined-plane gradually with overcoat 1 and ratchet 4 between tensioner, make the overcoat 1 can't be with respect to main shaft 2 contrarotations.
Ratchet is roughly trapezoidal shape in addition, and the contact site of ratchet and overcoat 1 inwall is the end face 5 of trapezoidal shape, is face contact, not only can strengthen the intensity of ratchet, is out of shape when avoiding being subjected to the ball extruding, guarantees to prevent the effect of reversing.Holdback in the utility model motorized pulleys is simple in structure, and intensity is good, long service life.
Claims (3)
1. motorized pulleys, comprise holdback, described holdback comprises the ratchet that relative main shaft is fixing, and be wrapped in the exterior overcoat fixing of ratchet with respect to cylinder, it is characterized in that the excircle of described ratchet is distributed with some ratchets, be provided with ball between the adjacent ratchet, the ball cooperation that contacts with the inwall of overcoat, described ratchet is a trapezoidal shape.
2. motorized pulleys as claimed in claim 1 is characterized in that, the excircle of described ratchet is evenly distributed with 6～16 ratchets.
3. motorized pulleys as claimed in claim 2 is characterized in that, the excircle of described ratchet is evenly distributed with 6～10 ratchets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201498961U CN202063507U (en) | 2011-05-12 | 2011-05-12 | Electric roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201498961U CN202063507U (en) | 2011-05-12 | 2011-05-12 | Electric roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202063507U true CN202063507U (en) | 2011-12-07 |
Family
ID=45057378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201498961U Expired - Fee Related CN202063507U (en) | 2011-05-12 | 2011-05-12 | Electric roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202063507U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103879722A (en) * | 2013-12-18 | 2014-06-25 | 广西高中阀门制造有限责任公司 | Electric roller with automatic backspin control function |
| CN103879720A (en) * | 2013-12-18 | 2014-06-25 | 广西高中阀门制造有限责任公司 | Auto-alarm anti-reversal electric roller |
| CN103879721A (en) * | 2013-12-18 | 2014-06-25 | 广西高中阀门制造有限责任公司 | Anti-reversal electric drum |
-
2011
- 2011-05-12 CN CN2011201498961U patent/CN202063507U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103879722A (en) * | 2013-12-18 | 2014-06-25 | 广西高中阀门制造有限责任公司 | Electric roller with automatic backspin control function |
| CN103879720A (en) * | 2013-12-18 | 2014-06-25 | 广西高中阀门制造有限责任公司 | Auto-alarm anti-reversal electric roller |
| CN103879721A (en) * | 2013-12-18 | 2014-06-25 | 广西高中阀门制造有限责任公司 | Anti-reversal electric drum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20140512 |