CN201809071U - Over-hoisting protection device of crane - Google Patents
Over-hoisting protection device of crane Download PDFInfo
- Publication number
- CN201809071U CN201809071U CN2010202346919U CN201020234691U CN201809071U CN 201809071 U CN201809071 U CN 201809071U CN 2010202346919 U CN2010202346919 U CN 2010202346919U CN 201020234691 U CN201020234691 U CN 201020234691U CN 201809071 U CN201809071 U CN 201809071U
- Authority
- CN
- China
- Prior art keywords
- inhibiting device
- crane
- hook
- hoisting
- control circuit
- 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
Links
Images
Landscapes
- Control And Safety Of Cranes (AREA)
Abstract
The utility model discloses an over-hoisting protection device of a crane. The device comprises a main power source input circuit and a branch power source (namely a hook) hoisting-lowering control circuit of the crane, wherein, a first position limit device is electrically connected to the hoisting-lowering control circuit and arranged above the hook stroke; and when the hook moves upwards and exceeds the stroke, the hook is contact with the first position limit device, and the first position device is disconnected, so that the hoisting-lowering control circuit is turned off. The device is characterized in that a second position limit device is electrically connected with the main power source input circuit and arranged above the first position limit device. When the hoisting-lowering control circuit and the first position limit device fail at the same time and the hook continues moving upwards, the hook can be in contact with the second position limit device, and then the second position limit device is disconnected, thereby cutting off the main power source of the crane. The device arranges a double insurance system for the crane, thereby eliminating unsafe accidents and ensuring the safe operation of the crane.
Description
Technical field
The utility model relates to large scale hoisting machinery, is specifically related to be used in the metallurgy industry hoisting crane erosion control ejection device (inhibiting device) of handling molten steel.
Background technology
Hoisting crane is many actions elevator machinery that vertical-lift within the specific limits and level are transported goods, claim crane again, at present, hoisting crane is in the process of lift cargo, especially in the process of metallurgy industry handling molten steel stove, in order to prevent that the malfunctioning accident that causes of electric system from taking place, inhibiting device generally all is equipped with, promptly when the lifting control system is malfunctioning, suspension hook can continue to rise, contact with first inhibiting device until certain height, make the lifting control system outage of hoisting crane force hoisting crane to quit work, thereby guarantee production safety.But when this inhibiting device is malfunctioning (owing under hot environment, work for a long time, the moving contact of inhibiting device and break back contact can be bonded together), the lifting control system of hoisting crane can worked (upwards promote) always, if hoisting large-size equipment or as lift in the metallurgy industry be molten steel the time, such problem takes place, and consequence is with hardly imaginable.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of hoisting crane erosion control ejection device, and after first inhibiting device was malfunctioning, the lifting control system of hoisting crane still can be controlled, prevents the generation of contingency.
The utility model is achieved through the following technical solutions:
Hoisting crane erosion control ejection device, general supply input circuit, the branch power supply that comprises hoisting crane is the hook lifting control circuit, be electrically connected first inhibiting device on the described lifting control circuit, described first inhibiting device is arranged at the top of suspension hook stroke, when suspension hook upwards moves above stroke, suspension hook touches mutually with first inhibiting device, first inhibiting device disconnects the lifting control circuit is disconnected, characteristics are to be electrically connected with second inhibiting device on the general supply input circuit of hoisting crane, and described second inhibiting device is arranged at first inhibiting device top.
Described first, second inhibiting device is a lead limit switch, and model is LX10-31.
The utility model compared with prior art has following obvious advantage:
The utility model is owing to be provided with second inhibiting device above first inhibiting device, and second inhibiting device is electrically connected with the general supply input circuit of hoisting crane, when lifting control circuit et out of order, simultaneously first inhibiting device is when also et out of order can not force suspension hook to stop upwards to move, suspension hook continues then can touch mutually with second inhibiting device when upwards moving, second inhibiting device then can disconnect, thereby cuts off the general supply of hoisting crane.
From as can be known above-mentioned, the utility model is that hoisting crane is provided with double insurance mechanism, can stop dangerous accident and take place, and guarantees the crane safety operation.
Description of drawings
Fig. 1 is connected in general supply input circuit scheme drawing for the utility model second inhibiting device.
The specific embodiment
As shown in Figure 1, hoisting crane erosion control ejection device, general supply input circuit, the branch power supply that comprises hoisting crane is the hook lifting control circuit, be electrically connected first inhibiting device (hook lifting control circuit and be electrically connected with first inhibiting device diagram is not provided) on the described lifting control circuit, described first inhibiting device is arranged at the top of suspension hook stroke.Be electrically connected with second inhibiting device (coil of the AC contactor of second inhibiting device is connected in hoisting crane general supply input circuit) on the general supply input circuit of hoisting crane, described second inhibiting device is arranged at first inhibiting device top.
When suspension hook upwards moved above stroke, the lifting control circuit still can not disconnect, and suspension hook then continues upwards operation, touched mutually with first inhibiting device that is arranged on the top, and the disconnection of first inhibiting device makes the disconnection of lifting control circuit, thereby forces suspension hook out of service.If this moment, suspension hook still continues (illustrating that fault has also taken place first inhibiting device) when up, suspension hook then can continue upwards operation, touch mutually with second inhibiting device that is arranged on first inhibiting device top, second inhibiting device disconnects the general supply circuit is disconnected, thereby force suspension hook out of service, guarantee production safety.
Claims (2)
1. hoisting crane erosion control ejection device, general supply input circuit, the branch power supply that comprises hoisting crane is the hook lifting control circuit, be electrically connected first inhibiting device on the described lifting control circuit, described first inhibiting device is arranged at the top of suspension hook stroke, when suspension hook upwards moves above stroke, suspension hook touches mutually with first inhibiting device, first inhibiting device disconnects the lifting control circuit is disconnected, it is characterized in that: be electrically connected with second inhibiting device on the general supply input circuit of hoisting crane, described second inhibiting device is arranged at first inhibiting device top.
2. hoisting crane erosion control ejection device as claimed in claim 1 is characterized in that: the coil of the AC contactor of described second inhibiting device is connected in hoisting crane general supply input circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202346919U CN201809071U (en) | 2010-06-21 | 2010-06-21 | Over-hoisting protection device of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202346919U CN201809071U (en) | 2010-06-21 | 2010-06-21 | Over-hoisting protection device of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201809071U true CN201809071U (en) | 2011-04-27 |
Family
ID=43892011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202346919U Expired - Fee Related CN201809071U (en) | 2010-06-21 | 2010-06-21 | Over-hoisting protection device of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201809071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682988A (en) * | 2021-08-31 | 2021-11-23 | 深圳市海浦蒙特科技有限公司 | Tower crane and anti-top-collision protection method, system and device thereof |
-
2010
- 2010-06-21 CN CN2010202346919U patent/CN201809071U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682988A (en) * | 2021-08-31 | 2021-11-23 | 深圳市海浦蒙特科技有限公司 | Tower crane and anti-top-collision protection method, system and device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201809071U (en) | Over-hoisting protection device of crane | |
| CN202729747U (en) | Overload and rope-loosening protective device of stacker | |
| CN203319442U (en) | Rope breakage protection device of construction lift | |
| CN202400743U (en) | Slip-preventing device for crane | |
| CN202535297U (en) | Control circuit preventing motor forward rotating contactor and motor backward rotating contactor from being adhered | |
| CN208716730U (en) | Metallurgical electric block lifting altitude limit circuit | |
| CN202400742U (en) | Crane hook sliding-proof device | |
| CN204022187U (en) | Building hoist hydraulic pressure switch fender guard | |
| CN209468073U (en) | A kind of electric control circuit of overhead crane with electric hoists lifting mechanism | |
| CN106914679A (en) | Picking up for NC flame cutting machine is expected palletizing apparatus and picks up material palletizing method | |
| CN202379613U (en) | Lifting mechanism of gate crane and bridge crane | |
| CN202687805U (en) | Lifting control circuit for preventing crane from hook sliding | |
| CN203820830U (en) | Brake safety device of converter ladle top blowing rod | |
| CN202911487U (en) | Electric emergency device and autorailer | |
| CN202829168U (en) | Fixed type freight transport hydraulic lifting platform self-balancing layer control system | |
| CN202379644U (en) | Electric control device for electric hoist | |
| CN205773084U (en) | A kind of degree type streamline dedicated platform | |
| CN203465559U (en) | Chain hoist life testing control device | |
| CN202671050U (en) | Descending protection circuit arranged on crane | |
| CN203903808U (en) | Lifting mechanism control device for grab crane | |
| CN202808236U (en) | Hoisting system of hoisting machine | |
| CN203128047U (en) | Crane controller and crane | |
| CN204369487U (en) | The anti-wire rope inclined-pulling control setup of electric block | |
| CN201594805U (en) | Safety controller of mixing machine | |
| CN202804413U (en) | Solder machine heater control circuit improved structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20110621 |