CN203570883U - Centrifugal brake - Google Patents
Centrifugal brake Download PDFInfo
- Publication number
- CN203570883U CN203570883U CN201320752744.XU CN201320752744U CN203570883U CN 203570883 U CN203570883 U CN 203570883U CN 201320752744 U CN201320752744 U CN 201320752744U CN 203570883 U CN203570883 U CN 203570883U
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- CN
- China
- Prior art keywords
- brake
- cam
- brake shoe
- bearing
- bearing pin
- 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 centrifugal brake. The centrifugal brake comprises a motor spindle and a brake drum, wherein a bearing and a cam are fixed on the motor spindle in sequence along the axial direction; the cam is provided with symmetric grooves; a tray is fixedly arranged on an outer circle of the bearing; brake shoes are symmetrically arranged on two sides of the cam; a brake block is fixedly arranged on each brake shoe and is positioned between each brake shoe and the inner wall of the brake drum; each brake shoe is hinged to the cam through a pin shaft; the pin shafts are positioned in the two symmetric grooves of the cam respectively; a spring is arranged at the upper end of each pin shaft; one end of each spring is fixedly connected with the corresponding pin shaft, and the other end of each spring is fixedly connected with the corresponding brake shoe on the symmetric side of the corresponding pin shaft; the pin shafts comprise a positioning pin shaft and a first pin shaft; the positioning pin shaft is fixedly connected with the tray. The centrifugal brake is simple in structure, safe and reliable, can avoid the influence on operation during the forward rotation of the motor spindle, and can prevent other parts from being damaged by over-high rotating speed of the motor spindle during the reverse rotation of the motor spindle.
Description
Technical field
The utility model belongs to braking device technical field, relates in particular to a kind of centrifugal brake.
Background technique
At present, the pumping unit using in oil field, its pumping unit can produce and rotate and reverse in actual production.When its pumping unit reversion rotating speed is too high, easily produce other parts damages.This is just in the urgent need to a kind of centrifugal brake, and when pumping unit reversion rotating speed reaches after rated speed, centrifugal brake can be implemented braking to this pumping unit, prevents the damage to other parts.
Model utility content
The utility model, in order to solve the problems of the prior art, provides a kind of simple in structure, safe and reliable centrifugal brake, can when electric machine main shaft forward, not affect work, prevents that controlling rotation speed of main shaft of motor is too high and damage other parts when electric machine main shaft reverses.
For solving the problems of the technologies described above, the utility model adopts following technological scheme: a kind of centrifugal brake, it comprises electric machine main shaft and is fixedly installed on the brake drum on motor, on described electric machine main shaft, be fixedly installed successively vertically bearing and with the cam of symmetrical grooves, on the outer ring of described bearing, be fixedly installed pallet, the monosymmetric brake shoe that is provided with of described cam, on brake shoe, be fixedly installed brake block, brake block is between brake shoe and the inwall of brake drum, hinged by bearing pin between brake shoe and cam, bearing pin lays respectively in two symmetrical grooves of cam, the upper end of bearing pin is provided with spring, one end of spring is fixedly connected with bearing pin, the other end of spring is fixedly connected with the brake shoe of the symmetrical side of this bearing pin, described bearing pin comprises alignment pin and the first bearing pin, alignment pin is fixedly connected with pallet.
The position that is positioned at brake shoe on described the first bearing pin is arranged with the first lining, and the first lining is positioned at the groove of cam; Position in described alignment pin between brake shoe and pallet is arranged with the second lining.
The outer ring of described bearing is embedded in pallet by back-up ring.
The outside of described brake drum is evenly fixedly installed floor.
Described bearing is all fixedly connected with by flat key with electric machine main shaft with cam.
The beneficial effects of the utility model are: during the utility model work, when electric machine main shaft forward, brake shoe, under the groove of spring tension and cam promotes, rotates in brake drum, and break does not affect normal work; When electric machine main shaft reversion and centrifugal force are greater than spring tension, the brake shoe of spring one side can depart from cam, the alignment pin of take moves outward as former mind-set, make in brake block on brake shoe and brake drum wall friction to electric machine main shaft is stopped operating, thereby while preventing that controlling rotation speed of main shaft of motor is too high, make other parts damages.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the A-A of Fig. 1 partly cuts open structural representation;
Fig. 3 is the structural representation of pallet in the utility model;
Fig. 4 is the B-B generalized section of Fig. 3;
Fig. 5 is the structural representation of the utility model cam.
Embodiment
As shown in Figures 1 to 5, the utility model comprises electric machine main shaft 11 and is fixedly installed on the brake drum 1 on motor, the outside of brake drum 1 is evenly fixedly installed floor 6, on electric machine main shaft 1, be fixedly installed successively vertically bearing 14 and with the cam 5 of symmetrical grooves 16, bearing 14 is all fixedly connected with by flat key 10 with electric machine main shaft with cam 5, the outer ring of bearing 14 is embedded in pallet 4 by back-up ring 15, the monosymmetric brake shoe 2 that is provided with of cam 5, on brake shoe 2, be fixedly installed brake block 3, brake block 3 is between brake shoe 2 and the inwall of brake drum 1, hinged by bearing pin between brake shoe 2 and cam 5, bearing pin lays respectively in two symmetrical grooves 16 of cam 5, the upper end of bearing pin is provided with spring 7, one end of spring 7 is fixedly connected with bearing pin, the other end of spring 7 is fixedly connected with the brake shoe 2 of the symmetrical side of this bearing pin, spring 7 is close to two brake shoes 2 on cam 5.Described bearing pin comprises alignment pin 8 and the first bearing pin 9, and alignment pin 8 is fixedly connected with pallet 4.
The position that is positioned at brake shoe 2 on the first bearing pin 9 is arranged with the groove 16 that the first lining 12, the first linings 12 are positioned at cam 5; Position in described alignment pin between brake shoe 2 and pallet 4 is arranged with the second lining 13.
During the utility model work, when electric machine main shaft 11 forward, brake shoe 2 is under the groove 16 of spring 7 pulling force and cam 5 promotes, and in the interior rotation of brake drum 1, break does not affect normal work; When electric machine main shaft 11 reversion and centrifugal force are greater than spring 7 pulling force, the brake shoe 2 of spring 7 one sides can depart from cam 5, the positioning pin column 8 of take moves outward as former mind-set, make brake block 3 and the interior wall friction of brake drum 1 on brake shoe 2, electric machine main shaft 11 reversion rotating speeds are higher, and the centrifugal force of generation is larger, make the brake block 3 on brake shoe 2 stuck with brake drum 1 inwall, to electric machine main shaft 11 is stopped operating, thereby prevent that electric machine main shaft 11 is fast when too high, make other parts damages.
Claims (5)
1. a centrifugal brake, it comprises electric machine main shaft and is fixedly installed on the brake drum on motor, it is characterized in that: on described electric machine main shaft, be fixedly installed successively vertically bearing and with the cam of symmetrical grooves, on the outer ring of described bearing, be fixedly installed pallet, the monosymmetric brake shoe that is provided with of described cam, on brake shoe, be fixedly installed brake block, brake block is between brake shoe and the inwall of brake drum, hinged by bearing pin between brake shoe and cam, bearing pin lays respectively in two symmetrical grooves of cam, the upper end of bearing pin is provided with spring, one end of spring is fixedly connected with bearing pin, the other end of spring is fixedly connected with the brake shoe of the symmetrical side of this bearing pin, described bearing pin comprises alignment pin and the first bearing pin, alignment pin is fixedly connected with pallet.
2. centrifugal brake according to claim 1, is characterized in that: the position that is positioned at brake shoe on described the first bearing pin is arranged with the first lining, and the first lining is positioned at the groove of cam; Position in described alignment pin between brake shoe and pallet is arranged with the second lining.
3. centrifugal brake according to claim 1, is characterized in that: the outer ring of described bearing is embedded in pallet by back-up ring.
4. centrifugal brake according to claim 1, is characterized in that: the outside of described brake drum is evenly fixedly installed floor.
5. centrifugal brake according to claim 1, is characterized in that: described bearing is all fixedly connected with by flat key with electric machine main shaft with cam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320752744.XU CN203570883U (en) | 2013-11-26 | 2013-11-26 | Centrifugal brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320752744.XU CN203570883U (en) | 2013-11-26 | 2013-11-26 | Centrifugal brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203570883U true CN203570883U (en) | 2014-04-30 |
Family
ID=50538615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320752744.XU Expired - Fee Related CN203570883U (en) | 2013-11-26 | 2013-11-26 | Centrifugal brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203570883U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090077A (en) * | 2015-04-30 | 2016-11-09 | 德昌电机(深圳)有限公司 | Centrifugal brake for shutter driver |
| CN108869580A (en) * | 2018-06-01 | 2018-11-23 | 华东交通大学 | A kind of brake with speed limiting function |
| CN108869579A (en) * | 2018-06-01 | 2018-11-23 | 华东交通大学 | A kind of limiter of speed of monorail conveyer |
| CN107588124B (en) * | 2016-07-06 | 2023-11-24 | 泰州市扬帆车件有限公司 | Low-abrasion expansion brake |
-
2013
- 2013-11-26 CN CN201320752744.XU patent/CN203570883U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090077A (en) * | 2015-04-30 | 2016-11-09 | 德昌电机(深圳)有限公司 | Centrifugal brake for shutter driver |
| CN107588124B (en) * | 2016-07-06 | 2023-11-24 | 泰州市扬帆车件有限公司 | Low-abrasion expansion brake |
| CN108869580A (en) * | 2018-06-01 | 2018-11-23 | 华东交通大学 | A kind of brake with speed limiting function |
| CN108869579A (en) * | 2018-06-01 | 2018-11-23 | 华东交通大学 | A kind of limiter of speed of monorail conveyer |
| CN108869580B (en) * | 2018-06-01 | 2019-12-03 | 华东交通大学 | A kind of brake with speed limiting function |
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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: 20140430 Termination date: 20181126 |