CN2865112Y - Tower type crane slewing gear brake - Google Patents
Tower type crane slewing gear brake Download PDFInfo
- Publication number
- CN2865112Y CN2865112Y CN 200520139937 CN200520139937U CN2865112Y CN 2865112 Y CN2865112 Y CN 2865112Y CN 200520139937 CN200520139937 CN 200520139937 CN 200520139937 U CN200520139937 U CN 200520139937U CN 2865112 Y CN2865112 Y CN 2865112Y
- Authority
- CN
- China
- Prior art keywords
- control circuit
- brake
- switch
- slew gear
- 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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- Stopping Of Electric Motors (AREA)
Abstract
The utility model discloses a brake for the revolution mechanism of tower crane, comprising a control circuit for the revolution mechanism, a braking coil, and a brake disk, wherein, the braking coil and brake disk are in the revolution mechanism (1), and the control circuit for the revolution mechanism is serially connected to the braking coil; the brake further comprises an auxiliary control circuit against power outage, which is designed to control braking of the revolution mechanism (1) in case of power outage; the auxiliary control circuit against power outage is connected in shunt with the control circuit for the revolution mechanism and then serially connected to the braking coil via a switch unit (10). The utility model not only can control the braking of the revolution mechanism through the auxiliary control circuit against power outage, but also can switch easily between normal power supply and power outage conditions, and is convenient to use.
Description
Technical field
The utility model relates to the brake of a kind of tower crane rotation mechanism.
Background technology
The brake of the slew gear of present derrick crane adopts the alternating current of 380V to become the direct current of 27-28V through transformer and rectifier, brake disc is lived in braking through restraining coil then, but derrick crane is sudden power in rotary course, brake can't make the directed braking of slew gear owing to short of electricity, make the crane arm of derrick crane under the ordering about of inertia or wind, rotate arbitrarily, may cause beyond thought security incident like this.
Summary of the invention
The utility model provides the brake of a kind of tower crane rotation mechanism, and it not only can control the orientation braking of slew gear by the outage auxiliary control circuit when outage, and the automatic switchover between electricity being arranged and cutting off the power supply is simple, easy to use.
The technical solution of the utility model is as follows: the brake of a kind of tower crane rotation mechanism, it comprises slew gear control circuit, restraining coil and brake disc, restraining coil and brake disc are positioned at slew gear, the slew gear control circuit is connected in series with restraining coil, it also comprises the outage auxiliary control circuit, the outage auxiliary control circuit is used to cut off the power supply the braking of time control slew gear, is connected in series with restraining coil by change over switch after outage auxiliary control circuit and the parallel connection of slew gear control circuit.
Described outage auxiliary control circuit comprises auxiliary normally-closed contact, the inching button of stand-by power supply, the total contactor of derrick crane power supply, and stand-by power supply is connected in series with auxiliary normally-closed contact, change over switch, restraining coil and the inching button of the total contactor of derrick crane power supply successively.Described change over switch comprises brake control circuit switch and charge switch, brake control circuit switch and charge switch switch mutually, be connected with brake control circuit switch one end after described slew gear control circuit and the outage auxiliary control circuit parallel connection, the other end of brake control circuit switch is connected with restraining coil, charge switch one end is connected with stand-by power supply, and the other end is connected with the slew gear control circuit.Described stand-by power supply is set to storage battery.
After having adopted the utility model, on brake, be provided with the outage auxiliary control circuit, derrick crane can cut restraining coil by the stand-by power supply on the auxiliary control circuit when outage, thereby brake rotary mechanism, in order to avoid crane arm collides other objects under the promotion of inertia or wind, cause the loss of the person and property.The switching of auxiliary control circuit braking when the braking of slew gear control circuit was with outage when the outage auxiliary control circuit adopted the auxiliary normally-closed contact conduct of general supply contactor that electricity is arranged, it can realize automaticallying switch, use more conveniently, and simple in structure, cost is low.Be provided with point driving switch in the outage auxiliary control circuit, point driving switch can be controlled the speed of directed braking as required, makes orientation safer.Be provided with brake control circuit switch and charge switch in the change over switch, brake control circuit switch and charge switch can switch mutually, if switch to the brake control circuit switch can realize electricity and when outage brake rotary mechanism, if switch to charge switch, slew gear control circuit and restraining coil are disconnected, and be connected with storage battery, realize that the power supply in the slew gear control circuit charges to storage battery, use more convenient.
Description of drawings
Fig. 1 is the utility model structural representation
Embodiment
According to Fig. 1, the brake of the utility model tower crane rotation mechanism mainly comprises slew gear control circuit, outage auxiliary control circuit, restraining coil and brake disc, and restraining coil and brake disc are positioned at slew gear 1.The slew gear control circuit comprises transformer 7, rectification circuit 8 and contactor 9, the outage auxiliary control circuit mainly comprises storage battery 2, one auxiliary normally-closed contact 3 of the total contactor of derrick crane power supply, inching button 4, the braking of control slew gear 1 when the outage auxiliary control circuit is used to conclude, between slew gear control circuit and outage auxiliary control circuit and restraining coil, be provided with change over switch 10, change over switch 10 comprises brake control circuit switch 5 and charge switch 6, brake control circuit switch 5 and charge switch 6 can switch mutually, are connected with restraining coil by brake control circuit switch 5 after outage auxiliary control circuit and the parallel connection of slew gear control circuit.Under normal circumstances, brake is given contactor 9 by the brake switch on the derrick crane control desk with power delivery, the main contact of contactor 9 is connected, power supply becomes the direct current cutting restraining coil generation magnetic field of 28V to come the beam system Moving plate AC rectification of 380V through transformer 7, rectification circuit 8, thus brake rotary mechanism 1.When outage, the auxiliary normally-closed contact 3 of general supply contactor automatically switches to the outage auxiliary control circuit with the slew gear control circuit, and the 28V DC power supply of the storage battery 2 of outage auxiliary control circuit produces magnetic field by restraining coil, thus brake rotary mechanism 1.Described charge switch 6 is between slew gear control circuit and storage battery 2, when rest, brake control circuit switch 5 can be switched to charge switch 6, disconnect being connected of other control circuit and restraining coil, have only the slew gear control circuit to be connected, so just can charge to storage battery 2 by the slew gear control circuit with storage battery 2.
Claims (4)
1, the brake of a kind of tower crane rotation mechanism, it comprises slew gear control circuit, restraining coil and brake disc, restraining coil and brake disc are positioned at slew gear (1), the slew gear control circuit is connected in series with restraining coil, it is characterized in that it also comprises the outage auxiliary control circuit, the outage auxiliary control circuit is used to cut off the power supply the braking of time control slew gear (1), is connected in series with restraining coil by change over switch (10) after outage auxiliary control circuit and the parallel connection of slew gear control circuit.
2, the brake of tower crane rotation according to claim 1 mechanism, it is characterized in that described outage auxiliary control circuit comprises auxiliary normally-closed contact (3), the inching button (4) of stand-by power supply, the total contactor of derrick crane power supply, stand-by power supply is connected in series with auxiliary normally-closed contact (3), change over switch (10), restraining coil and the inching button (4) of the total contactor of derrick crane power supply successively.
3, the brake of tower crane rotation according to claim 1 mechanism, it is characterized in that described change over switch (10) comprises brake control circuit switch (5) and charge switch (6), brake control circuit switch (5) and charge switch (6) switch mutually, be connected with brake control circuit switch (5) one ends after described slew gear control circuit and the outage auxiliary control circuit parallel connection, the other end of brake control circuit switch (5) is connected with restraining coil, charge switch (6) one ends are connected with stand-by power supply, and the other end is connected with the slew gear control circuit.
4, the brake of tower crane rotation according to claim 2 mechanism is characterized in that described stand-by power supply is set to storage battery (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520139937 CN2865112Y (en) | 2005-12-20 | 2005-12-20 | Tower type crane slewing gear brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520139937 CN2865112Y (en) | 2005-12-20 | 2005-12-20 | Tower type crane slewing gear brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2865112Y true CN2865112Y (en) | 2007-01-31 |
Family
ID=37677564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520139937 Expired - Fee Related CN2865112Y (en) | 2005-12-20 | 2005-12-20 | Tower type crane slewing gear brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2865112Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104528559A (en) * | 2015-01-05 | 2015-04-22 | 深圳市英威腾电气股份有限公司 | Tower crane system and tower crane rotation vortex flow controller |
| CN104555764A (en) * | 2015-01-05 | 2015-04-29 | 深圳市英威腾电气股份有限公司 | Rotary braking system and tower crane control system |
| CN105084146A (en) * | 2015-09-01 | 2015-11-25 | 深圳市英威腾电气股份有限公司 | Brake detection method and system of construction lifter frequency converter |
-
2005
- 2005-12-20 CN CN 200520139937 patent/CN2865112Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104528559A (en) * | 2015-01-05 | 2015-04-22 | 深圳市英威腾电气股份有限公司 | Tower crane system and tower crane rotation vortex flow controller |
| CN104555764A (en) * | 2015-01-05 | 2015-04-29 | 深圳市英威腾电气股份有限公司 | Rotary braking system and tower crane control system |
| CN105084146A (en) * | 2015-09-01 | 2015-11-25 | 深圳市英威腾电气股份有限公司 | Brake detection method and system of construction lifter frequency converter |
| CN105084146B (en) * | 2015-09-01 | 2017-05-24 | 深圳市英威腾电气股份有限公司 | Brake detection method and system of construction lifter frequency converter |
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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: 20070131 Termination date: 20121220 |