CN106946177B - A kind of bridge crane brake gear - Google Patents
A kind of bridge crane brake gear Download PDFInfo
- Publication number
- CN106946177B CN106946177B CN201710272490.4A CN201710272490A CN106946177B CN 106946177 B CN106946177 B CN 106946177B CN 201710272490 A CN201710272490 A CN 201710272490A CN 106946177 B CN106946177 B CN 106946177B
- Authority
- CN
- China
- Prior art keywords
- frequency converter
- brake
- time relay
- power supply
- uninterruptible 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
The invention discloses a kind of bridge crane brake gears, including contactor, air switch, the time relay, uninterruptible power supply, scram button, frequency converter and deflection machine, air switch is connected on frequency converter through uninterruptible power supply, the time relay is equipped with two be connected in parallel, reconnects between air switch and uninterruptible power supply；Contactor normally opened contact is connected with one of time relay；Scram button is connected in parallel between uninterruptible power supply and frequency converter, and deflection machine is mounted in driver's cabin, is connect with frequency converter；Brake motor is connected with frequency converter.The present invention is combined use using contactor, the time relay, frequency converter, deflection machine etc., it is braked using foot-operated deflection machine, the frequency dependence for depth and the frequency converter output that foot is stepped on, it is i.e. related to the speed of brake motor, also just related to the dynamics of brake, so that driving braking strength becomes controllably, even if brake operation can still provide under motor power blackout situation.
Description
Technical field
The present invention relates to brake appts technical field, especially a kind of bridge crane brake gear.
Background technique
Bridge crane braking system is extremely important, if be equivalent on bridge crane without brake
For automobile without brake, consequence is very serious, situation danger close；The bridge crane of domestic manufacturer's design at present, which brakes, is
System is using normally closed type band-type brake, as shown in Figure 1, M1 is the motor of bridge crane, M2 is bridge crane
The input power of brake motor, M1 and M2 be all the parallel connection method using three-phase 380V, motor M1 and M2 while obtain it is electric or
Power loss simultaneously, M2 electrical-coil use star connection.When cargo motor starting, brake motor also starts simultaneously, and band-type brake is opened；
When cargo motor power loss, also power loss, band-type brake closure, cart brake brake motor at once simultaneously.The brake of this brake scheme away from
Short from very, crane vibration in brake is very fierce, and the cargo below crane hook is easy to rock under inertia, sternly
Production safety is affected again.In this case, many users directly unclamp band-type brake, are made using reverse-starting braking operation mode of braking
It is dynamic, and brake gear becomes an ornaments；And when plugging, current of electric is very big, continually uses plugging, holds very much
Mechanical and electric fault is easily caused, and in crane accident power-off, be not at this moment available plugging scheme, crane loses
Control, causes bigger accident.Therefore a kind of to can control braking strength and in the power-off state a still valid bridge-type braked
Heavy-duty machine cart brake gear is badly in need of needs.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of bridge crane brake gears, and structure is simple, operation
Convenient, safety is good.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical scheme：A kind of bridge crane brake dress
It sets, including contactor, air switch, the time relay, uninterruptible power supply, scram button, frequency converter and deflection machine, air switch
It is connected on frequency converter through uninterruptible power supply, the time relay is equipped with two be connected in parallel, and reconnection is in air switch and not
Between uninterruptible power；Contactor normally opened contact is connected with one of time relay；Scram button is connected in parallel uninterruptedly
Between power supply and frequency converter, deflection machine is mounted in driver's cabin, is connect with frequency converter；Brake motor is connected with frequency converter.
Compared with prior art, the present invention has the following advantages that：Using contactor, the time relay, frequency converter, deflection machine
Etc. be combined use, braked using foot-operated deflection machine, the depth that foot is stepped on and frequency converter output frequency dependence, i.e., with brake
The speed of vehicle motor is related, also just related to the dynamics of brake, so that driving braking strength becomes controllably, even if powering off in motor
In the case of brake operation can still provide for.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the traditional normally closed type band-type brake of the present invention；
Fig. 2 is the structural schematic diagram of bridge crane brake gear of the present invention.
Specific embodiment
Present invention will now be described in detail with reference to the accompanying drawings., the description of this part be only it is exemplary and explanatory, do not answer
There is any restriction effect to protection scope of the present invention.
As shown in Fig. 2, a kind of bridge crane brake gear, by contactor KM1, air switch QF1, time relay
It device KT1, KT2, uninterruptible power supply UPS, scram button SB1, frequency converter and is mounted on driver's cabin and rides the composition such as deflection machine RP1.
In the wherein two-phase of input three phase mains U, V, W of cargo motor M1（Such as V, W）Between connect a contactor KM1；Due to
The out-put supply of UPS is the alternating current of 220V, therefore uses input voltage as the frequency converter of single-phase 220V；Due to single-phase frequency conversion
The output voltage of device is three-phase 220V alternating current, therefore the coil connection of band-type brake motor M2 is also accordingly changed to delta connection.
The course of work：QF1 is closed, UPS and KT1 coil obtains the moving together contact closure electric, KT1 delay disconnects, and KM2 coil obtains
Electricity, KM2 normally opened contact closure, at this moment frequency converter obtains electric；When cargo motor M1 work once electrified, KM1 coil also simultaneously must be electric,
KM1 normally opened contact closure, KT2 coil obtain the moving together contact closure electric, KT2 delay disconnects, and frequency converter is started to work, brake motor
M2 runs well, and band-type brake is opened, and cart is in operating status；When cargo motor M1 power loss, KM1 coil, KT2 coil are also simultaneously
Power loss is the moving together contact disconnected using KT2 delay due to connecing the enabling signal in frequency converter, and at this moment KT2 delay disconnects dynamic
Conjunction contact is still closed state, and brake motor M2 still runs well, and cart is in freewheeling condition, is only stepped on foot-operated
Deflection machine RP1 pedal, the resistance between wire size 13,12 become smaller, i.e., the voltage between wire size 13,12 reduces, frequency converter output
Frequency is also linear therewith to be reduced, and brake motor M2 running speed is also linear therewith to be reduced, and band-type brake is also linear under the action of the spring
Closure, cart brake according to the degree of stepping on of foot-operated deflection machine RP1 pedal, have reached the controllable shape of cart braking strength
State；When foot-operated deflection machine RP1 pedal is stepped on completely, frequency converter output frequency is 0, and brake motor M2 shuts down, and cart is vertical
Brake.When the moving together contact that KT2 delay disconnects is after delay time arrives, the moving together contact that KT2 delay disconnects is disconnected, frequency converter
It is in halted state.
When cart is in operating status, happen suddenly unexpected main power source disconnection fault when, cargo motor M1, KT1 coil, KT2 line
Circle and the equal power loss of UPS, cart still coast, at this moment the battery inversion power supply inside UPS, makes frequency converter be still within work
State, cart brake still according to the degree of stepping on of foot-operated deflection machine RP1 pedal, have reached still valid in the power-off state
The purpose braked；When the moving together contact that KT1 delay disconnects is after delay time arrives, the moving together contact that KT1 delay disconnects is disconnected
It opens, KM2 coil losing electricity, KM2 normally opened contact disconnects, and at this moment frequency converter power loss, brake motor M2 shut down, and cart is stopped immediately
Vehicle.
The effect of time relay KT1：It, can be by UPS normal power supply to change when L1, N have the case where 220v alternating current
Frequency device；When L1, N do not have the case where voltage, frequency conversion can be supplied electricity to by UPS internal cell inversion in the range of KT1 is delayed
Device work stops power supply to frequency converter, exhausts to avoid UPS battery electricity after the time of KT1 delay arrives.
The effect of time relay KT2：When cargo motor M1 work once electrified, the moving together contact that KT2 delay disconnects is closed
It closes, frequency converter works normally；When the work of cargo motor M1 power loss, in KT2 reference time delay, frequency converter is still normally exported,
After KT2 delay time arrives, the moving together contact that KT2 delay disconnects is disconnected, and at this moment frequency converter stops output, and brake motor M2 stops fortune
Turn, to avoid brake motor M2 still in working order after M1 power loss.
The effect of scram button SB1：When in case of emergency, pressing SB1, frequency converter is powered off, brake motor M2 power loss,
Cart is in braking state.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (1)
1. a kind of bridge crane brake gear, it is characterised in that：Including contactor, air switch, the time relay, no
Uninterruptible power, scram button, frequency converter and deflection machine, air switch are connected on frequency converter through uninterruptible power supply, time relay
Device is equipped with two be connected in parallel, reconnects between air switch and uninterruptible power supply；There are two contactor is set, first is connect
Tentaculum is located between the wherein two-phase of cargo motor input three phase mains, and normally opened contact is connected with first time relay；
Second contactor and scram button and second time relay are connected in uninterruptible power supply and frequency conversion in parallel after being sequentially connected in series
Between device, the normally opened contact of second contactor is connect with frequency converter；Deflection machine is mounted in driver's cabin, is connect with frequency converter；
Brake motor is connected with frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710272490.4A CN106946177B (en) | 2017-04-24 | 2017-04-24 | A kind of bridge crane brake gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710272490.4A CN106946177B (en) | 2017-04-24 | 2017-04-24 | A kind of bridge crane brake gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106946177A CN106946177A (en) | 2017-07-14 |
| CN106946177B true CN106946177B (en) | 2018-11-16 |
Family
ID=59476730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710272490.4A Expired - Fee Related CN106946177B (en) | 2017-04-24 | 2017-04-24 | A kind of bridge crane brake gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106946177B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3739339A1 (en) * | 1986-12-01 | 1988-07-07 | Pieck W Wohnbauk Veb | Circuit arrangement for regulating the lowering speed in the case of crane installations |
| US5818185A (en) * | 1994-11-07 | 1998-10-06 | Mannesmann Aktiengesellschaft | Process and device for monitoring and controlling the speed of rotation of an electric drive with frequency converter for hoisting gears |
| CN201567176U (en) * | 2009-10-30 | 2010-09-01 | 攀钢集团攀枝花钢钒有限公司 | Internal contracting brake control device during tundish car lifting in continuous casting machine |
| CN203497949U (en) * | 2013-07-22 | 2014-03-26 | 河南卫华重型机械股份有限公司 | Dual-cart driving control circuit of crane and crane thereof |
| CN204549860U (en) * | 2015-04-17 | 2015-08-12 | 天津德仕达起重输送设备有限公司 | Overhead traveling crane drives interlock protection system |
| CN205187686U (en) * | 2015-11-14 | 2016-04-27 | 中国长江航运集团南京金陵船厂 | It embraces system of stopping to exchange hydraulic pressure |
-
2017
- 2017-04-24 CN CN201710272490.4A patent/CN106946177B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3739339A1 (en) * | 1986-12-01 | 1988-07-07 | Pieck W Wohnbauk Veb | Circuit arrangement for regulating the lowering speed in the case of crane installations |
| US5818185A (en) * | 1994-11-07 | 1998-10-06 | Mannesmann Aktiengesellschaft | Process and device for monitoring and controlling the speed of rotation of an electric drive with frequency converter for hoisting gears |
| CN201567176U (en) * | 2009-10-30 | 2010-09-01 | 攀钢集团攀枝花钢钒有限公司 | Internal contracting brake control device during tundish car lifting in continuous casting machine |
| CN203497949U (en) * | 2013-07-22 | 2014-03-26 | 河南卫华重型机械股份有限公司 | Dual-cart driving control circuit of crane and crane thereof |
| CN204549860U (en) * | 2015-04-17 | 2015-08-12 | 天津德仕达起重输送设备有限公司 | Overhead traveling crane drives interlock protection system |
| CN205187686U (en) * | 2015-11-14 | 2016-04-27 | 中国长江航运集团南京金陵船厂 | It embraces system of stopping to exchange hydraulic pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106946177A (en) | 2017-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101934738B (en) | Double-rotor disc self-excited retarder and control method thereof | |
| CN108312893B (en) | Double-motor coordination control system and method | |
| WO2009039681A1 (en) | A power apparatus for oil-electricity hybrid vehicle and the operation control method thereof | |
| CN109733367A (en) | A kind of high reliability EMB line control brake system and its control method | |
| KR20080087157A (en) | Ac rotating machine control apparatus and ac rotating machine control method | |
| CN106946177B (en) | A kind of bridge crane brake gear | |
| CN203497949U (en) | Dual-cart driving control circuit of crane and crane thereof | |
| CN200969542Y (en) | Brake device for asynchronous motor | |
| CN206940152U (en) | Elevator safety drive system | |
| CN105978438B (en) | Inverter for supplying loaded self-adaptive boost voltage | |
| CN201887565U (en) | Electric vehicle energy recovery system with energy storage capacitor and DC voltage stabilizer | |
| CN106452196A (en) | Motor starting control circuit and method | |
| CN204641428U (en) | For the Intelligent brushless motor controller of battery-driven car | |
| CN209704753U (en) | A kind of multi-motors drive system of blower large torque blade | |
| CN107707158A (en) | A kind of frequency converter synthetical restraint system and its method of work | |
| CN202856670U (en) | Double-damping single-resistor triangle connection vibrationless braking frequency-conversion apparatus | |
| CN206099825U (en) | Motor starts control circuit | |
| CN207766160U (en) | A kind of antenna lifting mechanism frequency conversion control circuit | |
| CN201849627U (en) | Electric bicycle | |
| CN104097523A (en) | Electrical emergency braking system of pure electric vehicle | |
| CN107472264B (en) | Diesel locomotive driver controller with load defencive function | |
| CN102267161A (en) | Control system applied in brick making machine | |
| CN207106776U (en) | The power-off type brake apparatus of the automobile-used controlled motor power output of electric three-wheel | |
| CN104891377B (en) | The synchronous control system of double traction machine brakes | |
| CN205407284U (en) | High efficiency rectifier and inverter integration energy repayment converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181008 Address after: 545002 Liuzhou, the Guangxi Zhuang Autonomous Region, 3 partridge Road Applicant after: LIUZHOU RUIZHONGYUN STEEL LOGISTICS CO., LTD. Address before: 545002 268 East Ring Road, Central District, Liuzhou, the Guangxi Zhuang Autonomous Region Applicant before: Li Shiqiang |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181116 Termination date: 20190424 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |