CN202671100U - Safety protection brake device of electric hoist - Google Patents
Safety protection brake device of electric hoist Download PDFInfo
- Publication number
- CN202671100U CN202671100U CN 201220209883 CN201220209883U CN202671100U CN 202671100 U CN202671100 U CN 202671100U CN 201220209883 CN201220209883 CN 201220209883 CN 201220209883 U CN201220209883 U CN 201220209883U CN 202671100 U CN202671100 U CN 202671100U
- Authority
- CN
- China
- Prior art keywords
- ratchet
- pawl
- electric hoist
- safety protection
- brake device
- 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 provides a safety protection brake device of an electric hoist and relates to the technical field of lifting machinery. The technical scheme includes that the safety protection brake device of the electric hoist comprises a ratchet wheel component and a ratchet pawl component, wherein the ratchet wheel component is arranged on a rolling drum of the electric hoist, the ratchet wheel pawl component is arranged on a hoist shell, and when a lifting motor fails to brake or a reducer is damaged, heavy articles descends at a high speed, the safety protection brake device works. Friction resistance which is produced by a mechanism enables the rolling drum to completely brake and prevent the heavy articles from dropping. The safety protection brake device of the electric hoist solves the problem that safety hazard exists in a traditional electric hoist when the lifting motor fails to brake or the reducer is damaged.
Description
Technical field:
The safety guard-safeguard brake equipment of a kind of electric block of the utility model relates to the elevator machinery technical field.
Technical background:
What conventional electric cucurbit braking was adopted is that motor supports drg that motor is braked, weight declines that will exceed the speed limit when malfunctioning or retarder damages when the motor braking of electric block, generation that can cause the accident owing to the safety method that does not have other.
Summary of the invention:
Exist security hidden trouble, the utility model that a kind of safety guard-safeguard brake equipment of electric block is provided for solving when the malfunctioning or retarder of motor braking damages, its technical scheme is as follows:
1, the utility model mainly is comprised of ratchet and pawl two assemblies, and ratchet assembly mainly comprises two ratchet sheets, friction brake wafer, cam, bolt; Pawl assembly mainly comprises pawl plate, bearing pin and bearing.
2, two of ratchet assembly ratchet sheets connect by two bolts, and the pressing friction brake plate is fastened on the reel, cam by bolted on the ratchet sheet.
3, bearing pin is equipped with at the pawl plate center of pawl assembly, and utilizes bearing pin that pawl plate is fixed on the cucurbit shell, and pawl plate one end is equipped with bearing, and bearing contacts with cam on the ratchet assembly, and pawl plate can be done around bearing pin the swing of certain angle.
4, when electric block lifted weight uniform descent, the ratchet assembly on the reel is stirred cam gently also with the reel uniform rotation, and pawl plate is made small angle oscillation, does not affect the normal use of electric block; Malfunctioning or the retarder damage when motor braking, the weight hypervelocity descends when reaching certain value, the rotating speed of reel also is increased to certain speed, cam can accelerate to stir the bearing on the ratchet, the pawl plate pendulum angle is strengthened, the claw of ratchet inserts the ratchet recess when swing reaches certain angle, be ratchet recess and ratchet interlock between ratchet and the ratchet, at this moment ratchet is forced to stop operating, the ratchet friction brake wafer produces the friction drag consumed energy to reel, until reel is braked fully, play the effect that prevents the weight tenesmus.
The braking force of the safety guard-safeguard brake equipment of a kind of electric block of the utility model is very large, but also is failure-free, unless steel rope is broken, the safety guard-safeguard drg can both guarantee the safety of the object that hangs; Its device has advantages of simple in structure, easily manufactured and safe and reliable.
Description of drawings
Fig. 1 is a kind of structural representation of electric block safety guard-safeguard drg
1, reel 2, friction brake wafer 3, ratchet sheet 4, cam 5, bolt 1
6, bolt 27, pawl plate 8, bearing pin 9, bearing
Specific embodiments
The safety guard-safeguard brake equipment of a kind of electric block of the utility model, mainly formed by ratchet and pawl two assemblies, ratchet assembly is comprised of ratchet sheet 3, cam 4 and friction brake wafer 2, two ratchet sheets 3 of ratchet assembly connect by two bolts 5, pressing friction brake plate 2 is fastened on the reel 1, and cam 4 is fastened on the ratchet sheet 3 by bolt 6; Pawl assembly is comprised of pawl plate 7, bearing pin 8 and bearing 9, and bearing pin 8 is equipped with at the pawl plate center, is installed on the cucurbit shell, and pawl plate one end is equipped with bearing 9, and bearing 9 contacts with cam 4 on the ratchet assembly, and pawl plate 7 can be done around bearing pin 8 swing of certain angle.When electric block lifted weight uniform descent, the ratchet assembly on the reel is stirred cam gently also with the reel uniform rotation, and pawl plate is made small angle oscillation, does not affect the normal use of electric block; Malfunctioning or the retarder damage when motor braking, the weight hypervelocity descends when reaching certain value, the rotating speed of reel also is increased to certain speed, cam can accelerate to stir the bearing on the ratchet, and the pawl plate pendulum angle is strengthened, and the claw of ratchet inserts the ratchet recess when swing reaches certain angle, at this moment ratchet is forced to stop operating, the ratchet friction brake wafer produces the friction drag consumed energy to reel, until reel is braked fully, plays the effect that prevents the weight tenesmus.
Claims (2)
1. the safety guard-safeguard brake equipment of an electric block, mainly formed by ratchet and pawl two assemblies, it is characterized in that: ratchet assembly is comprised of ratchet sheet, cam and friction brake wafer, two ratchet sheets of ratchet assembly connect by two bolts, the pressing friction brake plate is fastened on the reel, cam by bolted on the ratchet sheet; Pawl assembly is comprised of pawl plate, bearing pin and bearing, bearing pin is equipped with at the pawl plate center, and utilizes bearing pin that pawl plate is fixed on the cucurbit shell, and pawl plate one end is equipped with bearing, bearing contacts with cam on the ratchet assembly, and pawl plate can be done around bearing pin the swing of certain angle.
2. according to the safety guard-safeguard brake equipment of a kind of electric block claimed in claim 1, it is characterized in that: be ratchet recess and ratchet interlock between ratchet and the ratchet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220209883 CN202671100U (en) | 2012-05-11 | 2012-05-11 | Safety protection brake device of electric hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220209883 CN202671100U (en) | 2012-05-11 | 2012-05-11 | Safety protection brake device of electric hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202671100U true CN202671100U (en) | 2013-01-16 |
Family
ID=47492017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220209883 Expired - Fee Related CN202671100U (en) | 2012-05-11 | 2012-05-11 | Safety protection brake device of electric hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202671100U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104229658A (en) * | 2014-08-29 | 2014-12-24 | 平湖普英特高层设备有限公司 | Rope collecting device with adjustable restraining moment |
| CN107253679A (en) * | 2017-08-14 | 2017-10-17 | 浙江双鸟起重设备有限公司 | A kind of twin beams steel-wire rope type electric block with defencive function |
-
2012
- 2012-05-11 CN CN 201220209883 patent/CN202671100U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104229658A (en) * | 2014-08-29 | 2014-12-24 | 平湖普英特高层设备有限公司 | Rope collecting device with adjustable restraining moment |
| CN107253679A (en) * | 2017-08-14 | 2017-10-17 | 浙江双鸟起重设备有限公司 | A kind of twin beams steel-wire rope type electric block with defencive 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: 20130116 Termination date: 20170511 |