CN207129879U - A kind of electric block over speed protection - Google Patents
A kind of electric block over speed protection Download PDFInfo
- Publication number
- CN207129879U CN207129879U CN201721009771.2U CN201721009771U CN207129879U CN 207129879 U CN207129879 U CN 207129879U CN 201721009771 U CN201721009771 U CN 201721009771U CN 207129879 U CN207129879 U CN 207129879U
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- CN
- China
- Prior art keywords
- ratchet
- reel
- cam
- roller
- rotation
- 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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- Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
Abstract
A kind of electric block over speed protection, belongs to hoisting machinery technical field.When lifting motor driven spool turns, ratchet and cam are fixed on reel and pull ratchet roller is pressed on cam with spool turns, extension spring, and roller is swung by a small margin with cam rotation band pawl；When lifting motor occurs abnormal, weight rapidly falls, reel high speed reverse rotation under the Action of Gravity Field of weight, and rotation drives ratchet and cam to rotate at a high speed to reel at a high speed, roller is hit in rotation to cam at a high speed, ratchet is set significantly to swing, ratchet top is caught in the groove of ratchet, props up the ratchet of rotation, make reel emergency brake, ratchet, which is significantly swung, simultaneously touches limiter, and limiter cut-out circuit, weight stops falling.
Description
Technical field
The utility model belongs to hoisting machinery technical field, is specifically related to a kind of electric block over speed protection.
Background technology
With the continuous development of society, the continuous quickening of people's rhythm of life, hoisting machinery is at production, transport, harbour etc.
Applying for numerous areas is constantly expanding.For crane, electric block is critical component, and it carries lifting and fortune
The effect sent.The species of in the market electric block is a lot, generally comprises lifting motor, reel shell and reel, reel and is arranged on
In reel shell, output shaft and the reel of lifting motor connect firmly, and drive spool turns, steel wire rope is wound with reel.Work as raising
When motor breaks down, suspension hook can drop with weight, cause serious security incident.Therefore, exploitation is a kind of applied widely,
Convenient to use, the low electric block over speed protection tool of cost is of great significance.
The content of the invention
The utility model is mainly to solve the technical problem present in above-mentioned prior art, there is provided a kind of electric block hypervelocity
Protector.
Above-mentioned technical problem of the present utility model is mainly what is be addressed by following technical proposals：A kind of electric block
Over speed protection, it is sleeved on the reel with reel shell, including ratchet, cam, ratchet and limiter, the ratchet and convex
Wheel is enclosed on the end of reel, and cam is connected firmly by bolt and ratchet, and the ratchet is bolted on reel, and ratchet
Inwall is provided with friction belt, and friction belt is arranged between ratchet and reel, and some grooves are evenly equipped with the ratchet, and the ratchet leads to
Cross bearing pin and be fixedly connected on reel shell, one end of the ratchet is fixed with roller, and the other end of ratchet is provided with ratchet top, institute
State ratchet top and extension spring is additionally provided with ratchet, the ratchet, the other end of extension spring is fixed on reel shell, passes through extension spring
Ratchet is pulled, roller is pressed on cam, roller is swung with cam rotation band pawl.
The operation principle of over speed protection：When lifting motor driven spool turns, ratchet and cam are fixed on volume
Ratchet is pulled roller is pressed on cam with spool turns, extension spring on cylinder, roller is put by a small margin with cam rotation band pawl
It is dynamic；When lifting motor occurs abnormal, weight rapidly falls, reel high speed reverse rotation under the Action of Gravity Field of weight, and reel is at a high speed
Rotation drives ratchet and cam to rotate at a high speed, and roller is hit in rotation to cam at a high speed, ratchet is significantly swung, ratchet top is caught in
In the groove of ratchet, the ratchet of rotation is propped up, makes reel emergency brake, while ratchet significantly swings and touches limiter, limit
Position device cut-out circuit, weight stop falling.
The utility model has the advantage that：The utility model is arranged on the reel of electric block, works as lifting motor
When generation is abnormal, can to reel emergency brake, prevent because weight tenesmus and caused by security incident.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model；
Fig. 2 is a kind of cross section structure diagram of the present utility model.
In figure：1st, ratchet；2nd, cam；3rd, ratchet；4th, limiter；5th, friction belt；6th, groove；7th, bearing pin；8th, roller；9th, ratchet
Top；10th, extension spring；11st, reel；12nd, reel shell.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment：A kind of electric block over speed protection, as Figure 1-Figure 2, it is sleeved on the reel with reel shell
On, including ratchet, cam, ratchet and limiter, the ratchet and cam sleeve pass through bolt and ratchet in the end of reel, cam
Connect firmly, the ratchet is bolted on reel, and the inwall of ratchet is provided with friction belt, friction belt be arranged on ratchet and
Between reel, some grooves are evenly equipped with the ratchet, the ratchet is fixedly connected on reel shell by bearing pin, the ratchet
One end is fixed with roller, and the other end of ratchet is provided with ratchet top, and the ratchet top is additionally provided with ratchet, the ratchet
Extension spring, the other end of extension spring are fixed on reel shell, by extension spring pull ratchet, roller is pressed on cam, roller with
Cam rotation band pawl is swung.
The utility model is arranged on the reel of electric block, can be to the urgent brake of reel when lifting motor occurs abnormal
Car, prevent because weight tenesmus and caused by security incident.
Finally it is pointed out that above example is only the more representational example of the utility model.Obviously, this practicality is new
Type is not limited to above-described embodiment, can also there is many deformations.Every foundation the technical essence of the utility model is to above example
Any simple modification, equivalent change and modification made, it is considered as belonging to the scope of protection of the utility model.
Claims (1)
1. a kind of electric block over speed protection, be sleeved on the reel with reel shell, including ratchet, cam, ratchet and
Limiter, it is characterised in that the ratchet and cam sleeve are connected firmly in the end of reel, cam by bolt and ratchet, the ratchet
It is bolted on reel, and the inwall of ratchet is provided with friction belt, friction belt is arranged between ratchet and reel, described
Some grooves are evenly equipped with ratchet, the ratchet is fixedly connected on reel shell by bearing pin, and one end of the ratchet is fixed with rolling
Wheel, the other end of ratchet are provided with ratchet top, and the ratchet top is additionally provided with extension spring on ratchet, the ratchet, extension spring
The other end is fixed on reel shell, is pulled ratchet by extension spring, roller is pressed on cam, roller drives with cam rotation
Ratchet is swung.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721009771.2U CN207129879U (en) | 2017-08-14 | 2017-08-14 | A kind of electric block over speed protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721009771.2U CN207129879U (en) | 2017-08-14 | 2017-08-14 | A kind of electric block over speed protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207129879U true CN207129879U (en) | 2018-03-23 |
Family
ID=61634790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721009771.2U Expired - Fee Related CN207129879U (en) | 2017-08-14 | 2017-08-14 | A kind of electric block over speed protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207129879U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108275534A (en) * | 2018-03-28 | 2018-07-13 | 苏州尼隆电梯部件有限公司 | A kind of elevator governor |
-
2017
- 2017-08-14 CN CN201721009771.2U patent/CN207129879U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108275534A (en) * | 2018-03-28 | 2018-07-13 | 苏州尼隆电梯部件有限公司 | A kind of elevator governor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180323 Termination date: 20200814 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |