CN100413775C - Slewing normally disengaged brake circuit of tower crane having emergent braking function in power turn-off situation - Google Patents

Slewing normally disengaged brake circuit of tower crane having emergent braking function in power turn-off situation Download PDF

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Publication number
CN100413775C
CN100413775C CNB2006100098467A CN200610009846A CN100413775C CN 100413775 C CN100413775 C CN 100413775C CN B2006100098467 A CNB2006100098467 A CN B2006100098467A CN 200610009846 A CN200610009846 A CN 200610009846A CN 100413775 C CN100413775 C CN 100413775C
Authority
CN
China
Prior art keywords
circuit
tower crane
braking
brake
power
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
Application number
CNB2006100098467A
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Chinese (zh)
Other versions
CN1843885A (en
Inventor
王业林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MUDANJIANG CONSTRUCTION ENGINEERING MACHINERY Co Ltd
Original Assignee
MUDANJIANG CONSTRUCTION ENGINEERING MACHINERY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MUDANJIANG CONSTRUCTION ENGINEERING MACHINERY Co Ltd filed Critical MUDANJIANG CONSTRUCTION ENGINEERING MACHINERY Co Ltd
Priority to CNB2006100098467A priority Critical patent/CN100413775C/en
Publication of CN1843885A publication Critical patent/CN1843885A/en
Application granted granted Critical
Publication of CN100413775C publication Critical patent/CN100413775C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The present invention relates to a slewing normally disengaged brake circuit of a tower crane having an emergent brake function in a power turn-off situation, which is improved by a slewing normally disengaged brake loop of the tower crane composed of a power supply circuit (1), a brake coil circuit (2) and a brake contactor normally disengaged contact (3). A power-off emergence circuit (4) additionally arranged is composed of a charging circuit (5), a discharging circuit (6) and an accumulator (7), wherein the input end of the charging circuit (5) is connected with an anode of the power supply circuit (1) and a connection point (8) of the brake contactor normally disengaged contact (3), and the output end is connected with an anode of the accumulator (7) and the input end of the discharging circuit (6); a cathode of the accumulator (7) is connected with a cathode of the power supply circuit (1) and a connection point (9) on one end of the brake coil circuit (2); the output end of the discharging circuit (6) is connected with the other end of the brake contactor normally disengaged contact (3) and a connection point (10) on the other end of the brake coil circuit (2). The tower crane using the present invention has a slewing brake function when power is off suddenly.

Description

Outage has the tower crane rotation of emergency brake function and often opens braking circuit
Technical field
The present invention relates to circuit, the tower crane rotation with emergency brake function that particularly cuts off the power supply is often opened braking circuit.
Background technology
Tower crane rotation braking is divided into often opens two kinds of braking and normally closed brakings, braking is carried out when often opening the brake coil electricity, braking is carried out during normally closed brake coil blackout, when not using, must remove for the braking of wind resistance tower crane rotation, often opening the restraining coil power-off brake removes, when cutting off the power supply, must artificially its braking be removed by normally closed restraining coil, otherwise it is accidents caused easily, therefore most employing of tower crane rotation braking often opened braking, but often open braking and also have potential safety hazard, if power failure suddenly will lose braking function, can the personnel and the equipment of camp site be worked the mischief.
Summary of the invention
Still the tower crane rotation that has braking function when the purpose of this invention is to provide a kind of unexpected have a power failure is often opened braking circuit.
Technical solution of the present invention is: it is by power circuit, the tower crane rotation that brake coil circuit and braking contactor open contact are formed is often opened the improvement of braking current supply circuit and is formed, the current failure emergency circuit of newly establishing is by charge circuit, discharge circuit and storage battery are formed, the charge circuit input end links to each other with braking contactor open contact point of connection with power circuit is anodal, the charge circuit mouth links to each other with the discharge circuit input end with B+, battery negative post links to each other with restraining coil circuit one end with power cathode, and the discharge circuit mouth links to each other with restraining coil circuit other end point of connection with the braking contactor open contact other end.
Technique effect of the present invention is: tower crane adopts this revolution often to open still to have braking function when braking circuit has a power failure suddenly.
Description of drawings
Accompanying drawing embodiment of the invention circuit diagram.
The specific embodiment
As shown in the figure, it is by power circuit 1, the tower crane rotation that brake coil circuit 2 and braking contactor open contact 3 are formed is often opened the improvement of braking current supply circuit and is formed, the current failure emergency circuit of newly establishing 4 is by charge circuit 5, discharge circuit 6 and storage battery 7 are formed, charge circuit 5 input ends link to each other with braking contactor open contact 3 point of connection 8 with power circuit 1 positive pole, charge circuit 5 mouths link to each other with discharge circuit 6 input ends with storage battery 7 positive poles, storage battery 7 negative poles link to each other with restraining coil circuit 2 one end point of connection 9 with power circuit 1 negative pole, and discharge circuit 6 mouths link to each other with restraining coil circuit 2 other end point of connection 10 with braking contactor open contact 3 other ends.Charge circuit 5 is made of charging resistance 11 and diode 12 polyphones, and discharge circuit 6 often drives button 13 by emergency brake and diode 14 polyphones constitute.

Claims (2)

1. the tower crane rotation with emergency brake function that cuts off the power supply is often opened braking circuit, it is characterized in that: it is by power circuit (1), the tower crane rotation that brake coil circuit (2) and braking contactor open contact (3) are formed is often opened the improvement of braking current supply circuit and is formed, the current failure emergency circuit of newly establishing (4) is by charge circuit (5), discharge circuit (6) and storage battery (7) are formed, charge circuit (5) input end links to each other with braking contactor open contact (3) point of connection (8) with power circuit (1) is anodal, charge circuit (5) mouth links to each other with discharge circuit (6) input end with storage battery (7) is anodal, storage battery (7) negative pole links to each other with restraining coil circuit (2) one end point of connection (9) with power circuit (1) negative pole, and discharge circuit (6) mouth links to each other with restraining coil circuit (2) other end point of connection (10) with braking contactor open contact (3) other end.
2. outage as claimed in claim 1 has the tower crane rotation of emergency brake function and often opens braking circuit, it is characterized in that described charge circuit (5) is made of charging resistance (11) and diode (12) polyphone, discharge circuit (6) often drives button (13) by emergency brake and diode (14) polyphone constitutes.
CNB2006100098467A 2006-03-21 2006-03-21 Slewing normally disengaged brake circuit of tower crane having emergent braking function in power turn-off situation Expired - Fee Related CN100413775C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2006100098467A CN100413775C (en) 2006-03-21 2006-03-21 Slewing normally disengaged brake circuit of tower crane having emergent braking function in power turn-off situation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2006100098467A CN100413775C (en) 2006-03-21 2006-03-21 Slewing normally disengaged brake circuit of tower crane having emergent braking function in power turn-off situation

Publications (2)

Publication Number Publication Date
CN1843885A CN1843885A (en) 2006-10-11
CN100413775C true CN100413775C (en) 2008-08-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2006100098467A Expired - Fee Related CN100413775C (en) 2006-03-21 2006-03-21 Slewing normally disengaged brake circuit of tower crane having emergent braking function in power turn-off situation

Country Status (1)

Country Link
CN (1) CN100413775C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102020203B (en) * 2010-11-19 2012-04-25 太原重工股份有限公司 Electronic control method for transferring heavy to lower level in power-off period of quenching crane
CN104528559B (en) * 2015-01-05 2017-04-26 深圳市英威腾电气股份有限公司 Tower crane system and tower crane rotation vortex flow controller
CN104973518A (en) * 2015-07-03 2015-10-14 杨海良 Crane with mobile charging device
CN105712221B (en) * 2016-04-13 2017-07-11 上海建工五建集团有限公司 The anti-breaking electrical protective device of tower crane
CN105692473B (en) * 2016-04-19 2017-07-18 三一汽车起重机械有限公司 Derrick crane and revolution loss protecting device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86208164U (en) * 1986-10-20 1987-09-23 沈阳市起重机械安全检验站 Control device for crane
CN2579062Y (en) * 2002-10-30 2003-10-08 林孟标 Battery charging adaptor of electric vehicle
CN2584441Y (en) * 2002-12-16 2003-11-05 林孟标 Battery charging converter for energy-saving electric vehicle
CN2918364Y (en) * 2006-03-21 2007-07-04 牡丹江建工机械有限责任公司 Slewing normally disengaged brake circuit of tower crane having emergent braking function in power turn-off situation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86208164U (en) * 1986-10-20 1987-09-23 沈阳市起重机械安全检验站 Control device for crane
CN2579062Y (en) * 2002-10-30 2003-10-08 林孟标 Battery charging adaptor of electric vehicle
CN2584441Y (en) * 2002-12-16 2003-11-05 林孟标 Battery charging converter for energy-saving electric vehicle
CN2918364Y (en) * 2006-03-21 2007-07-04 牡丹江建工机械有限责任公司 Slewing normally disengaged brake circuit of tower crane having emergent braking function in power turn-off situation

Also Published As

Publication number Publication date
CN1843885A (en) 2006-10-11

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Granted publication date: 20080827

Termination date: 20130321