CN101264852A - Brake used for electric hoist - Google Patents
Brake used for electric hoist Download PDFInfo
- Publication number
- CN101264852A CN101264852A CNA2008100496406A CN200810049640A CN101264852A CN 101264852 A CN101264852 A CN 101264852A CN A2008100496406 A CNA2008100496406 A CN A2008100496406A CN 200810049640 A CN200810049640 A CN 200810049640A CN 101264852 A CN101264852 A CN 101264852A
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- China
- Prior art keywords
- brake
- wheel
- electric hoist
- arcs
- brake wheel
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- 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.)
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Abstract
The invention discloses an electric hoist brake, relating to a brake; the purpose of the invention is to provide with an electric hoist of long service life, which can have brake action when the first brake fails or other malfunction is happened. The technical proposal of the invention is that the invention comprises a brake wheel and a plurality of brake arms, wherein the brake arms are two arc board, which are arranged in the brake wheel; a hole at the upper end of the brake arms is rotary-matched with a pin roll on a brake cover plate; a rotary block is positioned between the end faces at the lower ends of the brake arms; one end of a rotating shaft is connected with the lateral face of the block, which is rotated and supported in a brake cover plate hole; the upper end of a swing plate is connected with the rotating shaft; the lower end of the swing plate is hinged with one end of a pull rod; the other end of the pull rod faces to an electromagnet; both ends of a spring are respectively connected with two arc board; a velometer switch is electrically connected with the electromagnet, which is arranged at a shaft fixedly connected with the brake wheel. The invention is used for electric hoist.
Description
Technical field:
The present invention relates to a kind of drg, particularly a kind of brake used for electric hoist.
Background technology:
In the lifting field, existing drg is the normally closed structure, and promptly drg packs tightly brake wheel when no power, and energising rear brake band-type brake unclamps operating unit work.In the dangerous work environment, hoisting crane or electric block are for safety, second drg is established in requirement, make second drg with existing normally closed brake, its drawback be switch on and the no power drg all in running order, thereby its service life will shorten, this drg can not play long-term safety effect.
Summary of the invention:
The purpose of this invention is to provide a kind of long service life and only just play the electric block of brake action at first brake failure or when other faults take place.Technical scheme of the present invention is, brake used for electric hoist, include brake wheel and brake control lever, it is characterized in that: the brake control lever that is located in the brake wheel is two arcs, its upper end place has a hole and the bearing pin commentaries on classics that is supported on the drg cover plate to join, one switch block is arranged between the end face of its lower end, one end of the rotating shaft of rotational support in the brake cap plate hole is connected with the side of this switch block, the upper end of pendulum plate is connected with above-mentioned rotating shaft, one end of its lower end and pull bar is hinged, the other end of pull bar is relative with electromagnet, and the two ends of spring are connected with two arcs respectively, and electromagnet is electrically connected with the velometer switch that is located at the axle place that is connected with brake wheel.Described brake wheel is the wheel that is connected mutually with the change-speed box high speed shaft.Described brake wheel is the wheel that is connected mutually with the reel inwall, and the outer axle that stretches out of this brake wheel and change-speed box is connected.Described brake control lever is made up of two arcs, and the upper end overlaid of these two arcs has a hole to change with bearing pin and cooperates at the center of lap, and an end and the drg cover plate of this bearing pin are connected.The present invention is owing to a kind of brake structure open in usual of employing, thereby the remarkable advantage that has long service life compared with the prior art.
Description of drawings:
Fig. 1 is the front view of brake used for electric hoist of the present invention, and Fig. 2 is the A-A cutaway view of Fig. 1,
Fig. 3 is the another kind of structural representation of brake wheel.
The specific embodiment:
In conjunction with above accompanying drawing the present invention is elaborated, brake control lever 5 of the present invention is made up of two arcs, the upper end of these two arcs respectively has a semicircle orifice and bearing pin 3 to match, one switch block is arranged between the end face of its lower end, one end of bearing pin 3 is connected with the cover plate of second drg, with the screw thread of nut two arcs are connected by bearing pin 3 another terminations, the two ends of two springs 4 are separately fixed on two arcs, the brake control lever 5 that combines places in the brake wheel 2, the another kind of structure of brake control lever is, the thickness of the overlapped part of one end of two arcs is half of arc body thickness, has a hole and bearing pin to change at the center of overlapping and joins.Switch block 6 places in the lower port of two arcs, and the sidepiece of switch block 7 has a rotating shaft 6 rotational support in the cover board hole of drg, and an end of pendulum plate 8 is connected with bearing pin, and an end of the other end and pull bar 10 is hinged, and the other end of this pull bar is relative with electromagnet 9.
Principle of the present invention is, when adopting drg of the present invention to make second drg of electric block, when electric block during in normal operation, the present invention second drg is not worked, and carrying out glancing impact when breaking down before first drg can not brake, only when first brake failure, reel freely rotates when rotating speed reaches dangerous rotating speed, the velometer switch 11 that is located at the high speed shaft place of change-speed box 12 is connected solenoid circuit, the suction of electromagnet makes the rotation of rotating shaft rotation certain angle drive switch block that brake control lever is opened the brake wheel locking, reel stops operating, and prevents the danger that electric block meets accident.Wanting brake wheel a kind of is the brake wheel (referring to Fig. 2) that is connected mutually with the high speed shaft of change-speed box; Another kind is the brake wheel 2 that is connected mutually with the inwall of reel 13, and the axle that this brake wheel and reel stretch out outward is connected (referring to Fig. 3), and the former lock torque is less, promptly can brake with less lock torque, and the latter has then saved change-speed box, and is simple in structure.Thereby second drg of the present invention, can be implemented in first drg and carry out glancing impact, second drg does not participate in braking, only can not just brake by this drg of glancing impact at first brake failure, and therefore, the service life of this drg is longer.
Claims (4)
1, brake used for electric hoist, include brake wheel and brake control lever, it is characterized in that: the brake control lever that is located in the brake wheel is two arcs, its upper end place has a hole and the bearing pin commentaries on classics that is supported on the drg cover plate to join, one switch block is arranged between the end face of its lower end, one end of the rotating shaft of rotational support in the brake cap plate hole is connected with the side of this switch block, the upper end of pendulum plate is connected with above-mentioned rotating shaft, one end of its lower end and pull bar is hinged, the other end of pull bar is relative with electromagnet, the two ends of spring are connected with two arcs respectively, and electromagnet is electrically connected with the velometer switch that is located at the axle place that is connected with brake wheel.
2, brake used for electric hoist as claimed in claim 1 is characterized in that: described brake wheel is the wheel that is connected mutually with the change-speed box high speed shaft.
3, brake used for electric hoist as claimed in claim 1 is characterized in that: described brake wheel is the wheel that is connected mutually with the reel inwall, and the outer axle that stretches out of this brake wheel and change-speed box is connected.
4, brake used for electric hoist as claimed in claim 1, it is characterized in that: described brake control lever is made up of two arcs, the upper end overlaid of these two arcs has a hole to change with bearing pin and cooperates at the center of lap, an end and the drg cover plate of this bearing pin are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100496406A CN101264852A (en) | 2008-04-25 | 2008-04-25 | Brake used for electric hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100496406A CN101264852A (en) | 2008-04-25 | 2008-04-25 | Brake used for electric hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101264852A true CN101264852A (en) | 2008-09-17 |
Family
ID=39987583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100496406A Pending CN101264852A (en) | 2008-04-25 | 2008-04-25 | Brake used for electric hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101264852A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829782A (en) * | 2016-12-22 | 2017-06-13 | 宁波市海翔远洋捕捞用具有限公司 | A kind of winch for ensureing braking quality |
| CN112225104A (en) * | 2020-09-23 | 2021-01-15 | 刘应华 | Electric hoist with good anti-skid performance |
-
2008
- 2008-04-25 CN CNA2008100496406A patent/CN101264852A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829782A (en) * | 2016-12-22 | 2017-06-13 | 宁波市海翔远洋捕捞用具有限公司 | A kind of winch for ensureing braking quality |
| CN112225104A (en) * | 2020-09-23 | 2021-01-15 | 刘应华 | Electric hoist with good anti-skid performance |
| CN112225104B (en) * | 2020-09-23 | 2022-06-17 | 山东丰斯工程技术有限公司 | Electric hoist with good anti-skid performance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080917 |