CN203319563U - Overload protection device of tower crane - Google Patents
Overload protection device of tower crane Download PDFInfo
- Publication number
- CN203319563U CN203319563U CN2013204064198U CN201320406419U CN203319563U CN 203319563 U CN203319563 U CN 203319563U CN 2013204064198 U CN2013204064198 U CN 2013204064198U CN 201320406419 U CN201320406419 U CN 201320406419U CN 203319563 U CN203319563 U CN 203319563U
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- tower crane
- signal
- lift system
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Abstract
The utility model provides an overload protection device of a tower crane. The overload protection device of the tower crane comprises an overload limiter, a weight sensor, a power source controller, an electric whistle and a lifting speed limiter. According to the overload protection device of the tower crane, the protection role is played when a lifting mechanism of the tower crane lifts overload objects.
Description
Technical field
The utility model relates to the crane control field, relates in particular to a kind of tower crane overweight protection device.
Background technology
Along with the propelling of urbanization and the minimizing of land resources, the skyscraper in urban construction is more and more, and tower crane is applied in the construction of skyscraper more and more.But tower crane often has generation because promote overweight accident.In prior art, for the overweight protection of tower crane, there is no good solution.
Summary of the invention
The purpose of this utility model is to provide a kind of tower crane overweight protection device, and the overweight object of tower crane lift mechanism lifts is played a protective role.
In order to solve the problems of the technologies described above, the tower crane overweight protection device that the utility model provides is achieved in that
A kind of tower crane overweight protection device comprises: load limiter, weight sensor, power-supply controller of electric, electric whistle and hoisting speed killer;
Described weight sensor, promote the weight of object, and the weight of described object sent to described load limiter for responding to described tower crane;
Described load limiter, for receiving the weight of described object, when the weight of described object surpasses default the first value, send to described hoisting speed killer the signal that middling speed promotes object; When the weight of described object surpasses default the second value, to described hoisting speed killer, send the signal that low speed promotes object; When the weight of described object surpasses default the 3rd value, send the signal of warning to described electric whistle; When the weight of described object surpasses default the 4th value, send the signal of warning to described electric whistle, and send to described power-supply controller of electric the signal stopped to the lift system power supply;
Described electric whistle, for after receiving the signal that sends warning, send warning;
Described power-supply controller of electric, for after receiving the signal that stops powering to lift system, stop powering to lift system;
Described hoisting speed killer, after the signal receiving described middling speed lifting object, reduce the power supply voltage of lift system to 50% of maximum speed; After the signal that receives described low speed lifting object, reduce the power supply voltage of lift system to 30% of maximum speed.
Optionally, described default the first value is: 30% of the maximum permission of described tower crane lift system hoisting capacity.
Optionally, described default the second value is: 50% of the maximum permission of described tower crane lift system hoisting capacity.
Optionally, described default the 3rd value is: 90% of the maximum permission of described tower crane lift system hoisting capacity.
Optionally, described default the 4th value is: the maximum permission of described tower crane lift system hoisting capacity.
The tower crane overweight protection device that the utility model provides, load limiter is limited the weight of object of weight inductor induction, according to the first default value, the second value, the 3rd value and the 4th value, the hoisting speed, the electric whistle that change respectively lift system send alerting signal, stop to the lift system power supply, stop promoting; Prevent promoting object overweight, cause serious consequence.With respect to the tower crane of prior art, restriction graduation that the utility model is overweight, speed limit degree, overload protection is more careful, more can protect safety in production.
The accompanying drawing explanation
Fig. 1 is the overweight protection device structural representation that the utility model provides.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, the tower crane overweight protection device that the utility model provides comprises: load limiter 100, weight sensor 200, power-supply controller of electric 300, electric whistle 400 and hoisting speed killer 500;
Described weight sensor 200, promote the weight of object, and the weight of described object sent to described load limiter for responding to described tower crane;
Described load limiter 100, for receiving the weight of described object, when the weight of described object surpasses default the first value, send to described hoisting speed killer the signal that middling speed promotes object; When the weight of described object surpasses default the second value, to described hoisting speed killer, send the signal that low speed promotes object; When the weight of described object surpasses default the 3rd value, send the signal of warning to described electric whistle; When the weight of described object surpasses default the 4th value, send the signal of warning to described electric whistle, and send to described power-supply controller of electric the signal stopped to the lift system power supply;
Described electric whistle 400, for after receiving the signal that sends warning, send warning;
Described power-supply controller of electric 300, for after receiving the signal that stops powering to lift system, stop powering to lift system;
Described hoisting speed killer 500, after the signal receiving described middling speed lifting object, reduce the power supply voltage of lift system to 50% of maximum speed; After the signal that receives described low speed lifting object, reduce the power supply voltage of lift system to 30% of maximum speed.
The utility model provides preferred embodiment, and described default the first value is: maximum 30% of the hoisting capacity that allows of described tower crane lift system.
The utility model provides preferred embodiment, and described default the second value is: maximum 50% of the hoisting capacity that allows of described tower crane lift system.
The utility model provides preferred embodiment, and described default the 3rd value is: maximum 90% of the hoisting capacity that allows of described tower crane lift system.
The utility model provides preferred embodiment, and described default the 4th value is: the maximum hoisting capacity that allows of described tower crane lift system.
It should be noted that: the power supply voltage of tower crane lift mechanism lifts object maximum speed, those skilled in the art can according to tower crane specifically need set, the utility model does not limit this.The maximum hoisting capacity that allows of tower crane lift system, those skilled in the art can according to tower crane specifically need set, the utility model does not limit this.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. a tower crane overweight protection device, is characterized in that, comprising: load limiter, weight sensor, power-supply controller of electric, electric whistle and hoisting speed killer;
Described weight sensor, promote the weight of object, and the weight of described object sent to described load limiter for responding to described tower crane;
Described load limiter, for receiving the weight of described object, when the weight of described object surpasses default the first value, send to described hoisting speed killer the signal that middling speed promotes object; When the weight of described object surpasses default the second value, to described hoisting speed killer, send the signal that low speed promotes object; When the weight of described object surpasses default the 3rd value, send the signal of warning to described electric whistle; When the weight of described object surpasses default the 4th value, send the signal of warning to described electric whistle, and send to described power-supply controller of electric the signal stopped to the lift system power supply;
Described electric whistle, for after receiving the signal that sends warning, send warning;
Described power-supply controller of electric, for after receiving the signal that stops powering to lift system, stop powering to lift system;
Described hoisting speed killer, after the signal receiving described middling speed lifting object, reduce the power supply voltage of lift system to 50% of maximum speed; After the signal that receives described low speed lifting object, reduce the power supply voltage of lift system to 30% of maximum speed.
2. tower crane overweight protection device according to claim 1, is characterized in that, described default the first value is: maximum 30% of the hoisting capacity that allows of described tower crane lift system.
3. tower crane overweight protection device according to claim 1, is characterized in that, described default the second value is: maximum 50% of the hoisting capacity that allows of described tower crane lift system.
4. tower crane overweight protection device according to claim 1, is characterized in that, described default the 3rd value is: maximum 90% of the hoisting capacity that allows of described tower crane lift system.
5. tower crane overweight protection device according to claim 1, is characterized in that, described default the 4th value is: the maximum hoisting capacity that allows of described tower crane lift system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204064198U CN203319563U (en) | 2013-07-09 | 2013-07-09 | Overload protection device of tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204064198U CN203319563U (en) | 2013-07-09 | 2013-07-09 | Overload protection device of tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203319563U true CN203319563U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204064198U Expired - Fee Related CN203319563U (en) | 2013-07-09 | 2013-07-09 | Overload protection device of tower crane |
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| Country | Link |
|---|---|
| CN (1) | CN203319563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI723678B (en) * | 2019-12-13 | 2021-04-01 | 泰川機械股份有限公司 | Load monitoring system |
-
2013
- 2013-07-09 CN CN2013204064198U patent/CN203319563U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI723678B (en) * | 2019-12-13 | 2021-04-01 | 泰川機械股份有限公司 | Load monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140709 |
|
| EXPY | Termination of patent right or utility model |