CN202808231U - Tower crane swing emergency braking device - Google Patents
Tower crane swing emergency braking device Download PDFInfo
- Publication number
- CN202808231U CN202808231U CN 201220526966 CN201220526966U CN202808231U CN 202808231 U CN202808231 U CN 202808231U CN 201220526966 CN201220526966 CN 201220526966 CN 201220526966 U CN201220526966 U CN 201220526966U CN 202808231 U CN202808231 U CN 202808231U
- Authority
- CN
- China
- Prior art keywords
- tower machine
- tower crane
- normally closed
- closed contact
- emergency braking
- 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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- Stand-By Power Supply Arrangements (AREA)
Abstract
A tower crane swing emergency braking device reasonably overcomes the defect that an existing tower crane accidentally encounters power failure when rotates in normal work and accordingly a swing mechanism is out of control. The tower crane swing emergency braking device adopts few materials, utilizes a part of electrical appliances of a tower crane body, enables the tower crane to automatically switch a standby power supply in shutdown, namely supplies power for the swing mechanism and avoids an accident.
Description
Technical field:
The utility model relates to a kind of swing type mechanism of tower machine, and prominent chance has a power failure when being specifically related to the work of tower machine needs the device of revolution emergency braking.
Background technology:
At present, the swing type mechanism of tower crane [upper rotary, carriage amplitude varying formula] is free state under off working state, what adopt is drg open in usual [the used power supply of drg is direct current (DC)], this just so that the tower machine when work is rotated such as unexpected power failure, trainstop loses brake action because of power failure, and the tower machine freely rotates with inertia out of control, object on the tower machine suspension hook just may hit with people or phase on its rotary motion trace, causes the accident.This is not the problem of chaufeur, but itself there is defective in the tower machine.
Summary of the invention:
For addressing the aforementioned drawbacks, the utility model provides to the tower machine and installs a kind of revolution emergency braking apparatus additional, and this equipment safety is reliable, with less input, obtains good effect, satisfactorily resolves the problems referred to above.
The technical scheme that the utility model adopts is: a kind of tower machine revolution emergency braking apparatus; comprise that storage battery [24V], tower machine rotary braking switch [contain two pairs of open contacts at least; a pair of for tower machine primary circuit; a pair of for this device circuit], tower machine phase sequence relay [will contain a pair of open contact for tower machine primary circuit, with the normally closed contact of being connected for this device circuit] normally closed contact, the total contactless switch normally closed contact of tower machine, tower machine trainstop connect wire with being connected.It is characterized in that: in parallel with tower machine trainstop again after the total contactless switch normally closed contact series connection of storage battery and tower machine rotary braking switch, tower machine phase sequence relay normally closed contact and tower machine.
When the tower machine normally has electricity work; the normally closed contact of tower machine phase sequence relay and the total contactless switch of tower machine disconnects; even chaufeur is opened tower machine rotary braking switch; the power supply of storage battery also supplies less than on the tower machine trainstop; storage battery does not consume electric energy, and what provided electric energy for tower machine trainstop this moment is external power.When having a power failure, the normally closed contact of tower machine phase sequence relay and the total contactless switch of tower machine is closed, and this moment, storage battery made the moving stall of tower mechanism just to the trainstop power supply as long as chaufeur is opened tower machine rotary braking switch.
The beneficial effects of the utility model are: the tower function battery power that immediately automaticallyes switch is supplied with tower machine trainstop, does not add any operating sequence to chaufeur, and is safe and reliable; Take full advantage of the electric elements [except storage battery and some wires] of tower machine self, less investment, effective, science, economy.
Description of drawings:
Accompanying drawing is the electrical schematic diagram of this device, among the figure: 1, storage battery, 2, tower machine trainstop, 3, the total contactless switch normally closed contact of tower machine, 4, tower machine phase sequence relay normally closed contact, 5, tower machine rotary braking switch.
The specific embodiment:
The utility model is described in further detail by reference to the accompanying drawings.
As shown in the figure, this device circuit is comprised of storage battery 1, tower machine trainstop 2, the total contactless switch normally closed contact 3 of tower machine, tower machine phase sequence relay normally closed contact 4 and tower machine rotary braking switch 5.In parallel with trainstop again after the total contactless switch normally closed contact 3 of storage battery 1 and tower machine, tower machine phase sequence relay 4 and 5 series connection of tower machine rotary braking switch.
When the tower machine normally had electricity work, total tower machine contactless switch normally closed contact 3 and tower machine phase sequence relay normally closed contact 4 disconnect, this device circuit was obstructed, even tower machine rotary braking switch 5 closures, storage battery is not also to 2 power supplies of tower machine trainstop.In the work, when the tower machine has a power failure suddenly, the total contactless switch normally closed contact 3 of tower machine and tower machine phase sequence relay normally closed contact 4 closures; as long as this moment is driver's operation tower machine rotary braking switch 5; this device circuit is just connected, and storage battery makes the moving stall of tower mechanism just to 2 power supplies of tower machine trainstop.
Claims (1)
1. a tower machine turns round emergency braking apparatus; comprise storage battery (1), tower machine trainstop (2), the total contactless switch normally closed contact of tower machine (3), tower machine phase sequence relay normally closed contact (4) and tower machine rotary braking switch (5); after it is characterized in that storage battery (1) and tower machine rotary braking switch (5), tower machine phase sequence relay normally closed contact (4) and the total contactless switch normally closed contact of tower machine (3) being connected, in parallel with tower machine trainstop 2 again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220526966 CN202808231U (en) | 2012-10-16 | 2012-10-16 | Tower crane swing emergency braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220526966 CN202808231U (en) | 2012-10-16 | 2012-10-16 | Tower crane swing emergency braking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202808231U true CN202808231U (en) | 2013-03-20 |
Family
ID=47867152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220526966 Expired - Fee Related CN202808231U (en) | 2012-10-16 | 2012-10-16 | Tower crane swing emergency braking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202808231U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103991805A (en) * | 2014-06-06 | 2014-08-20 | 南通市达欣工程股份有限公司 | Electrical emergency control circuit for tower crane |
-
2012
- 2012-10-16 CN CN 201220526966 patent/CN202808231U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103991805A (en) * | 2014-06-06 | 2014-08-20 | 南通市达欣工程股份有限公司 | Electrical emergency control circuit for tower crane |
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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: 20130320 Termination date: 20151016 |
|
| EXPY | Termination of patent right or utility model |