CN2377238Y - Safety stop - Google Patents
Safety stop Download PDFInfo
- Publication number
- CN2377238Y CN2377238Y CN 99215335 CN99215335U CN2377238Y CN 2377238 Y CN2377238 Y CN 2377238Y CN 99215335 CN99215335 CN 99215335 CN 99215335 U CN99215335 U CN 99215335U CN 2377238 Y CN2377238 Y CN 2377238Y
- Authority
- CN
- China
- Prior art keywords
- cam
- travel switch
- control
- frame
- power supply
- 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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- Types And Forms Of Lifts (AREA)
Abstract
The utility model relates to a travel limiter for controlling suspension wheels of a tower crane, a crane and a headframe elevator. A worm wheel, a worm screw, a cam and a travel switch are arranged on a machine frame in a housing; the cam and the worm wheel are coaxially connected; the cam is provided with two symmetrical convex heads, axially and alternately arranged and movably contacted with a test button of the travel switch to respectively control a power supply of a control box and a power supply of a motor of a hoister to realize the double control of the running of the suspension wheel in order to protect personal safety.
Description
The utility model is a kind of limiting device of control lifting travel distance.
At present, be used to control the limiting device of the hanging wheel lifting travel of tower crane, well cabinet frame, crane elevator, the travel switch (AC relay) of its control winch running, because aging poor contact of contacts, to close a floodgate or to release lock insensitive, misoperation appears, its contact adhesive can not be disconnected, Control Failure, cause hanging wheel rush to summit or hang out of control, the loss that jeopardizes personal safety and operational outfit.
The utility model provides a kind of control operation case power supply and winch motor power simultaneously, makes the limiting device of winch safe operation.
General plotting scheme of the present utility model is as follows:
Anchor fitting organic frame and clicker on the base plate, travel switch, cam, worm gear, worm screw is installed on the frame, outer installation shell, cam, the coaxial assembling of worm gear connects, two travel switches respectively join operation case power lead and winch by the power lead of machine, its technical characterstic is two plush coppers that symmetry is arranged on the outer garden periphery of cam, its axially alternately, respectively at the moving contact of two travel switch buttons.
The good effect that the utility model brings is:
In case the travel switch normally closed contact of control winch motor can not disconnect when out of control; another plush copper of cam brushes up against the travel switch of control operation case power supply; cut off general supply; make winch out of service; prevent that hanging wheel from rushing to summit or fall to hanging down that protection operator safety and equipment are avoided damaging towards ground.
Description in conjunction with the accompanying drawings and embodiments now further describes technology contents of the present utility model:
Fig. 1 is a topology view of the present utility model.
Fig. 2 is the plan structure view of Fig. 1.
Referring to accompanying drawing 1, frame 3 of the present utility model is the U font, be fixedly mounted on the base plate 10, casing 1 is socketed on the base plate 10, worm screw 8 axle sleeves connect base plate 10 and frame 3, worm gear 7 is connected with two cams are coaxial, axle 5 is connected in frame 3 and base plate 10 by axle sleeve, two cams 4 and 4 ' two outsides in frame 3, worm gear 7 is in the centre of frame 3, the cam 4 in 3 liang of outsides of frame and 4 ' cooresponding the right and left assemble attended operation case travel switch 2 and 2 ' and be connected winch travel switch 6 and 6 ' respectively, cam 4 and 4 ' two plush coppers 11 with 11 ' respectively with travel switch 2 and 2 ' and travel switch 6 and 6 ' contact by twisting, 8 one axles of worm screw connect winch, the hanging wheel of winch lifting, to end of run, two plush coppers 11 of plush copper 4 brush up against the button of travel switch 2 and 6 simultaneously, opening operation case general supply and winch motor power, clicker 9 makes sound simultaneously.In another outside of frame 3, cam 4 and two travel switches 2 ' and 6 ' are controlled hanging wheel whereabouts stroke limit.
Claims (1)
1, a kind of limiting device, frame and clicker are installed on the base plate, travel switch, cam, worm gear, worm screw are contained on the frame, it is characterized in that: cam (4), have on the week of (4 ') garden the symmetry two plush coppers (11), (11 '), axially alternately, contact by twisting with travel switch (2), (6) and (2 '), (6 ') respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99215335 CN2377238Y (en) | 1999-07-02 | 1999-07-02 | Safety stop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99215335 CN2377238Y (en) | 1999-07-02 | 1999-07-02 | Safety stop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2377238Y true CN2377238Y (en) | 2000-05-10 |
Family
ID=34007301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99215335 Expired - Fee Related CN2377238Y (en) | 1999-07-02 | 1999-07-02 | Safety stop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2377238Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432523C (en) * | 2006-11-03 | 2008-11-12 | 河南理工大学 | Mechanical stroke spacer |
| CN103072915A (en) * | 2013-01-08 | 2013-05-01 | 太仓市康辉科技发展有限公司 | Winding engine |
| CN106219428A (en) * | 2016-08-14 | 2016-12-14 | 韩睿 | A kind of limiting device of electric block |
-
1999
- 1999-07-02 CN CN 99215335 patent/CN2377238Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432523C (en) * | 2006-11-03 | 2008-11-12 | 河南理工大学 | Mechanical stroke spacer |
| CN103072915A (en) * | 2013-01-08 | 2013-05-01 | 太仓市康辉科技发展有限公司 | Winding engine |
| CN103072915B (en) * | 2013-01-08 | 2015-02-18 | 太仓市康辉科技发展有限公司 | Winding engine |
| CN106219428A (en) * | 2016-08-14 | 2016-12-14 | 韩睿 | A kind of limiting device of electric block |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |