CN101575074A - Method for controlling lifting height of hoist by photoelectricity - Google Patents
Method for controlling lifting height of hoist by photoelectricity Download PDFInfo
- Publication number
- CN101575074A CN101575074A CNA200810099395XA CN200810099395A CN101575074A CN 101575074 A CN101575074 A CN 101575074A CN A200810099395X A CNA200810099395X A CN A200810099395XA CN 200810099395 A CN200810099395 A CN 200810099395A CN 101575074 A CN101575074 A CN 101575074A
- Authority
- CN
- China
- Prior art keywords
- hoist
- photoelectric switch
- height
- photoelectricity
- lifting height
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
- B66D1/56—Adaptations of limit switches
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Elevator Control (AREA)
Abstract
The invention discloses a photoelectricity limiting method for lifting a hoist, in particular a method for controlling the highest lifting height of a hoist by a photoelectric switch, which is realized by the following steps: a light projector and the photoelectric switch are respectively installed below a running trolley and on a pulley block holder; when a hanging hook rises to a certain height and can rightly receive a signal sent from the light projector, the photoelectric switch begins to work, thereby limiting the highest position of the hoist. The photoelectric switch is a switch element without contacts, thereby having long service life and reliable action and effectively improving the height limitation reliability.
Description
Technical field
The present invention relates to crane hoisting height control method, particularly relate to the method that adopts photoelectric switch hoisting crane to be carried out the control that raises.
Background technology
Elevator machinery must limit its limiting altitude when normal operation, otherwise might cause the safety misadventure of personnel and equipment.Present known hoisting crane superelevation restriction realizes by mechanical travel switch, promptly be turned back to certain revolution at reel, draw the lifting height indirectly, drive a deceleration machinery by reel at this moment and touch the travel switch action, thus the lifting altitude of control hoisting crane.Because travel switch belongs to mechanical electric elements, long-term use is fragile, causes work unreliable, in case this kind situation occurs, then can not carry out actv. control to the hoisting crane height.Thereby the easy safety misadventure that the person and equipment take place.
Summary of the invention
For overcoming existing hoisting crane on the limitation in height device, because travel switch work is unreliable, damage easily, can not limit highly effectively lifting, thereby might cause safety misadventure personal and equipment.The invention provides a kind of new height limit method.
The technical solution adopted in the present invention is, side at walking dolly (5), captive joint with walking dolly with plate (1), go up installation photoelectric switch (3) at assembly pulley seat (4), when suspension hook rose to certain altitude, when photoswitch (3) can be experienced the signal that light projector (2) sends just, then photoelectric switch (3) was started working, thereby the mode of operation of control executing mechanism is realized the restriction to height.
Beneficial effect: because photoelectric switch is breakerless switch, long service life, reliable in action so can highly implement restriction to lifting reliably, reduces the person that the damage because of control element causes and the safety misadventure of equipment.
Description of drawings
Below in conjunction with accompanying drawing the present invention is specified.
Accompanying drawing is a principle schematic of the present invention, shown in the figure: 1, plate; 2, light projector; 3, photoelectric switch; 4, assembly pulley seat; 5, walking dolly.
The specific embodiment
Side at walking dolly (5), captive joint with walking dolly with plate (1), go up installation photoelectric switch (3) at assembly pulley seat (4), when suspension hook rises to certain altitude, when photoswitch (3) can be experienced the signal that light projector (2) sends just, then photoelectric switch (3) is started working, thereby the mode of operation of control executing mechanism is realized the restriction to height.
Claims (2)
1, a kind of method for controlling lifting height of hoist by photoelectricity is characterized in that: light projector (2) is installed on the dolly (5) by plate (1), and photoelectric switch (3) is installed on the assembly pulley seat (4).
2, a kind of method for controlling lifting height of hoist by photoelectricity is characterized in that: the position that hoisting crane raises is controlled by photoelectric switch (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810099395XA CN101575074A (en) | 2008-05-05 | 2008-05-05 | Method for controlling lifting height of hoist by photoelectricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810099395XA CN101575074A (en) | 2008-05-05 | 2008-05-05 | Method for controlling lifting height of hoist by photoelectricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101575074A true CN101575074A (en) | 2009-11-11 |
Family
ID=41270173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810099395XA Pending CN101575074A (en) | 2008-05-05 | 2008-05-05 | Method for controlling lifting height of hoist by photoelectricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101575074A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153028A (en) * | 2011-04-11 | 2011-08-17 | 湖北帅力化工有限公司 | Electric hoist anti-ejection automatic control device |
| WO2013029990A1 (en) * | 2011-09-02 | 2013-03-07 | Thales | Optical system for detecting the state of winding of a cable on a winch |
-
2008
- 2008-05-05 CN CNA200810099395XA patent/CN101575074A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153028A (en) * | 2011-04-11 | 2011-08-17 | 湖北帅力化工有限公司 | Electric hoist anti-ejection automatic control device |
| CN102153028B (en) * | 2011-04-11 | 2012-12-12 | 湖北帅力化工有限公司 | Electric hoist anti-ejection automatic control device |
| WO2013029990A1 (en) * | 2011-09-02 | 2013-03-07 | Thales | Optical system for detecting the state of winding of a cable on a winch |
| FR2979625A1 (en) * | 2011-09-02 | 2013-03-08 | Thales Sa | OPTICAL SYSTEM FOR DETECTING THE STATE OF WINDING OF A CABLE ON A WINCH |
| AU2012301183B2 (en) * | 2011-09-02 | 2016-10-27 | Thales | Optical system for detecting the state of winding of a cable on a winch |
| US9643825B2 (en) | 2011-09-02 | 2017-05-09 | Thales | Optical system for detecting the state of winding of a cable on a winch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091111 |