CN208150844U - A kind of double-brake electric hoist that can effectively carry out open-phase protection - Google Patents
A kind of double-brake electric hoist that can effectively carry out open-phase protection Download PDFInfo
- Publication number
- CN208150844U CN208150844U CN201820283890.5U CN201820283890U CN208150844U CN 208150844 U CN208150844 U CN 208150844U CN 201820283890 U CN201820283890 U CN 201820283890U CN 208150844 U CN208150844 U CN 208150844U
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- Prior art keywords
- phase
- brake
- liter
- decentralization
- control circuit
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Abstract
The utility model relates to a kind of double-brake electric hoists that can effectively carry out open-phase protection, including three-phase conic rotor braking motor, reel, reduction gearbox, control cabinet, suspension hook, control button, auxiliary brake and operation circuit；Operation circuit include by breaker, the main circuit and assisting brake circuit, control circuit that the main contacts that hangs liter contactor, the main contacts for transferring contactor and three-phase conic rotor braking motor are constituted；Assisting brake circuit is equipped with single-phase rectification bridge；Control circuit includes hanging a liter control circuit, decentralization control circuit and L1L3 phase open-phase protection circuit；L1L3 phase open-phase protection circuit includes a relay being connected between the L1 phase of breaker output end and L3 phase, normally opened contact and hang a liter control circuit, decentralization control circuit is connected.The utility model can three-phase conic rotor braking motor effectively to electric block carry out open-phase protection, avoid causing three-phase conic rotor braking motor to burn due to certain one-phase open circuit in three-phase line.
Description
Technical field
The utility model relates to technical field of crane equipment more particularly to a kind of double brakes that can effectively carry out open-phase protection
Electric block.
Background technique
Electric block is widely used in lifting weight, generally the three-phase conic rotor braking motor band by having brake function
It is dynamic, the components such as contactor, limiter, operation button are typically provided in operating circuit.To improve safety, prevent three-phase taper from turning
The unexpected failure of sub- braking motor brake, many electric blocks there is additionally provided a set of auxiliary brake, auxiliary brake
Electromagnetic type is generally used, brake electromagnetic coil, which is powered, when electric block works overcomes the elastic force of brake spring to open auxiliary brake dress
It sets, the power-off of brake electromagnetic coil, auxiliary brake brake under the action of brake spring when electric block is shut down.
In use, a certain phase in three-phase line is usually caused to open due to power supply line's poor contact etc.
Road causes three-phase conic rotor braking motor to burn, in the prior art, frequently with the installation open phase protector pair in power supply line
Three-phase conic rotor braking motor carries out open-phase protection, but open phase protector mostly uses greatly the electronic components such as capacitance-resistance, due to capacitance-resistance
After working after a period of time, part characteristic can change equal electronic components, especially vulnerable to extraneous such as thunder and lightning, humidity
Factor influences, and leads to job insecurity, and it is not easy to repair once to break down.
Utility model content
The utility model overcomes the deficiencies in the prior art, provides a kind of double brake electricity that can effectively carry out open-phase protection
Dynamic cucurbit effectively can carry out open-phase protection to three-phase conic rotor braking motor, avoid due to a certain in three-phase power line
It mutually opens a way, causes three-phase conic rotor braking motor to burn, circuit the operation is stable.
The utility model is achieved through the following technical solutions：
A kind of double-brake electric hoist that can effectively carry out open-phase protection, including three-phase conic rotor braking motor, reel,
Reduction gearbox, control cabinet, suspension hook, control button, auxiliary brake and operation circuit；The three-phase conic rotor braking motor is set
In reel one end, the other end of one end connection reel of reduction gearbox, control cabinet is set to three-phase conic rotor braking outside motor, hangs
Hook is connected by wirerope with reel；The control button be equipped with it is normally opened hang a liter button, normally opened decentralization button and it is normally closed stop press
Button；The auxiliary brake is set to the other end of reduction gearbox, which includes shell, brake axle, is fixed on brake
The brake disc of axle one end, brake electromagnetic coil, brake block, the brake spring for being fixed on enclosure interior；The brake axle is another
The high speed shaft of end connection reduction gearbox, brake block are set between brake disc and brake electromagnetic coil, which can axially move；
The brake spring is set between brake block and shell end, and pushes brake block to brake disc；
The operation circuit includes main circuit, assisting brake circuit and control circuit；The main circuit includes breaker, hangs
It rises the main contacts of contactor, transfer the main contacts and three-phase conic rotor braking motor of contactor；The input terminal of the breaker
It is separately connected L1, L2, L3 phase of three phase mains；It is described hang liter contactor for control three-phase conic rotor braking motor rotating forward hang
It rises, the input terminal of three of them main contacts is separately connected three output ends of breaker, and output end connects three-phase conic rotor braking
The input terminal of motor；The decentralization contactor is for controlling the decentralization of three-phase conic rotor braking motor reversal, three of them main contacts
Input terminal be separately connected three output ends of breaker, output end connects the input terminal of three-phase conic rotor braking motor,
The wherein two-phase of middle decentralization three main contacts output ends of contactor intersects and runs three-phase conic rotor braking motor reversal；
The assisting brake circuit includes brake electromagnetic coil and single-phase rectification bridge；The both ends point of the brake electromagnetic coil
Not Lian Jie single-phase rectification bridge two output ends, two input terminals of single-phase rectification bridge are separately connected the zero curve and three of three phase mains
One input terminal of phase conic rotor braking motor；
The control circuit includes hanging a liter control circuit, decentralization control circuit and L1L3 phase open-phase protection circuit；
It is described hang L3 phase that liter control circuit includes the breaker output end being serially connected, it is normally opened hang a liter button, decentralization connects
Normally closed second auxiliary contact of tentaculum, the L2 phase for hanging a liter contactor coil, normally closed stop button and breaker output end；It is described to hang
It rises the normally opened third auxiliary contact of contactor and normally opened to hang liter button parallel connection self-locking；
The decentralization control circuit includes the L1 phase of the breaker output end being serially connected, normally opened decentralization button, hangs and liter connect
Normally closed second auxiliary contact of tentaculum, the L2 phase for transferring contactor coil, normally closed stop button and breaker output end；Under described
Normally opened third auxiliary contact and the normally opened decentralization button parallel connection for putting contactor are self-locking；
The L1L3 phase open-phase protection circuit includes a relay being connected between the L1 phase of breaker output end and L3 phase
Device, normally opened contact and hang a liter control circuit, decentralization control circuit connect；
A liter contactor, decentralization contactor, relay and the single-phase rectification bridge of hanging is set in control cabinet.
Further, be equipped with outside the reduction gearbox for control suspension hook hang rise and under be placed on the self-braking limit of extreme position
Position device, the limiter and reduction gearbox transmission connection；The limiter is equipped with normally closed upper limit travel switch and normally closed lower bound range is opened
It closes, the normally closed upper limit travel switch, which is series at, to be hung in liter control circuit, and normally closed lower bound range switch is series at decentralization control electricity
Lu Zhong.When normally closed upper limit travel switch or normally closed lower bound range switch motion, normally-closed contact is disconnected, and a liter control electricity is hung in cutting
Road or decentralization control circuit, hang liter contactor or decentralization contactor disconnects cutting main circuit, and three-phase conic rotor braking motor stops
Rotation stop is moved and is braked.
The utility model has the beneficial effects that：Liter control circuit and decentralization control circuit access phase are hung by running in circuit
Between line, effective open-phase protection can be played to the phase line accessed；The coil of relay is accessed between L1 phase and L3 phase,
Its normally opened contact and hang a liter control circuit, decentralization control circuit is connected, effective open-phase protection can be played to L1 phase and L3 phase and made
With, it is avoidable due to certain one-phase open circuit in three-phase power line, cause three-phase conic rotor braking motor to burn；Open-phase protection
Element does not have electronic component, the operation is stable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of the auxiliary brake of the utility model.
Fig. 3 is the circuit diagram of the utility model.
Specific embodiment
As shown in Figures 1 to 3, the embodiments of the present invention, a kind of electronic calabash of double brake that can effectively carry out open-phase protection
Reed, including three-phase conic rotor braking motor M, reel 1, reduction gearbox 2, control cabinet 3, suspension hook 4, control button 5, auxiliary brake dress
Set 6 and operation circuit；The three-phase conic rotor braking motor M is set to 1 one end of reel, one end connection reel 1 of reduction gearbox 2
The other end, control cabinet 3 are set to outside three-phase conic rotor braking motor M, and suspension hook 4 is connected by wirerope 7 and reel 1；It is described
Control button 5 hangs a liter button SB1, normally opened decentralization button SB2 and normally closed stop button SB3 equipped with normally opened；The auxiliary brake dress
6 other ends for being set to reduction gearbox 2 are set, which includes shell 8, brake axle 9, the brake for being fixed on 9 one end of brake axle
Hull 10, brake electromagnetic coil YA, brake block 11, the brake spring 12 being fixed on inside shell 8；9 other end of brake axle
The high speed shaft of reduction gearbox 2 is connected, brake block 11 is set between brake disc 10 and brake electromagnetic coil YA, which can do axis
To movement；The brake spring 12 is set between 8 end of brake block 11 and shell, and pushes brake block 11 to brake disc 10；
The operation circuit includes main circuit, assisting brake circuit and control circuit；The main circuit include circuit breaker Q F,
It hangs the main contacts KM1-1 of liter contactor, transfer the main contacts KM2-1 and three-phase conic rotor braking motor M of contactor；It is described disconnected
The input terminal of road device QF is separately connected L1, L2, L3 phase of three phase mains；Liter contactor KM1 that hangs is for controlling three-phase taper
Liter is hung in rotor brake motor M rotating forward, the input terminal of three of them main contacts KM1-1 is separately connected three output ends of circuit breaker Q F,
The input terminal of output end connection three-phase conic rotor braking motor M；The decentralization contactor KM2 is for controlling three-phase cone rotor
Braking motor M reversion decentralization, the input terminal of three of them main contacts KM2-1 are separately connected three output ends of circuit breaker Q F, export
The input terminal of end connection three-phase conic rotor braking motor M, wherein decentralization tri- main contacts KM2-1 output ends of contactor KM2
Wherein two-phase, which intersects, makes three-phase conic rotor braking motor M reversion operation；
The assisting brake circuit includes brake electromagnetic coil YA and single-phase rectification bridge UR；The brake electromagnetic coil YA's
Both ends are separately connected two output ends of single-phase rectification bridge UR, and two input terminals of single-phase rectification bridge UR are separately connected three phase mains
Zero curve N and three-phase conic rotor braking motor M an input terminal；
The control circuit includes hanging a liter control circuit, decentralization control circuit and L1L3 phase open-phase protection circuit；
It is described hang L3 phase that liter control circuit includes the circuit breaker Q F output end being serially connected, it is normally opened hang a liter button SB1, under
It puts the normally closed second auxiliary contact KM2-2 of contactor KM2, hang a liter contactor KM1 coil, normally closed stop button SB3 and breaker
The L2 phase of QF output end；The normally opened third auxiliary contact KM1-3 for hanging liter contactor KM1 and normally opened to hang liter button SB1 in parallel
It is self-locking；
The decentralization control circuit includes the L1 phase for the circuit breaker Q F output end being serially connected, normally opened decentralization button SB2, hangs
Rise normally closed second auxiliary contact KM1-2, decentralization contactor KM2 coil, normally closed stop button SB3 and the breaker of contactor KM1
The L2 phase of QF output end；The normally opened third auxiliary contact KM2-3 and normally opened decentralization button SB2 of the decentralization contactor KM2 is in parallel
It is self-locking；
The L1L3 phase open-phase protection circuit include one be connected between the L1 phase and L3 phase of circuit breaker Q F output end after
Electric appliance K, normally opened contact K-1 and hang a liter control circuit, decentralization control circuit connect；
A liter contactor KM1, decentralization contactor KM2, relay K and the single-phase rectification bridge UR of hanging is set in control cabinet 3.
The working principle of the present embodiment is：When the suspension hook 4 of electric block being wanted to hang liter, circuit breaker Q F is closed, relay K obtains electric
Movement, normally opened contact K-1 closure；Press it is normally opened hang a liter button SB1, hang liter control circuit and connect, hang a liter contactor KM1 obtain it is electric
Movement, main contacts KM1-1 closure, normally opened third auxiliary contact KM1-3 closure, normally closed second auxiliary contact KM1-2 are disconnected, main
Circuit is connected, and brake electromagnetic coil YA obtains the direct current after single-phase rectification bridge UR is rectified, and brake block 11 is attracted to overcome brake
Brake is opened in thrust and brake disc 10 separation of spring 12, and three-phase conic rotor braking motor M obtains electric rotating forward operation；Hang a liter contact
After the normally closed second auxiliary contact KM1-2 of device KM1 is disconnected, interlocking is played to decentralization control circuit, even if pressing at this time normally opened
Button SB2 is transferred, decentralization control circuit will not be connected；Hang the normally opened third auxiliary contact KM1-3 closure of liter contactor KM1
Afterwards, hang that liter button SB1 parallel connection is self-locking, and unclamping the normally opened liter button SB1 that hangs at this time will not influence three-phase conic rotor braking to normally opened
The operation of motor M；It such as to shut down, press normally closed stop button SB3 cutting and hang a liter control circuit, hang a liter contactor KM1 power loss,
Main contacts KM1-1 is disconnected, and three-phase conic rotor braking motor M power loss is out of service, electromagnetic coil YA power loss of braking, brake block 11
Ejection brake disc 10 carries out auxiliary brake to electric block under the promotion of brake spring 12；Hang the auxiliary touching of liter contactor KM1
Point also resets.The L2 phase and L3 phase that power supply is connected due to hanging liter control circuit, just play open-phase protection to this two-phase,
As soon as hanging a liter control circuit as long as there is phase phase shortage and disconnecting, hang liter contactor KM1 just and can not obtain electric, main circuit is just not turned on；By
Power supply L1 phase and L3 phase are connected in the coil of relay K, therefore open-phase protection is just served to this two-phase, as long as there is a phase to lack
Phase, relay K can not just obtain electric, and normally opened contact K-1 can not be closed, and hung a liter control circuit and be not turned on, and a liter contactor KM1 is hung
It also just can not energized action.
Similarly, when the suspension hook 4 of electric block to transfer, circuit breaker Q F, relay K energized action, normally opened contact are closed
K-1 closure；Normally opened decentralization button SB2 is pressed, decentralization control circuit is connected, and contactor KM2 energized action, main contacts are transferred
KM2-1 closure, normally opened third auxiliary contact KM2-3 closure, normally closed second auxiliary contact KM2-2 are disconnected, and main circuit is connected, brake
Electromagnetic coil YA obtain through single-phase rectification bridge UR rectify after direct current, attract brake block 11 overcome brake spring 12 thrust and
Brake is opened in the separation of brake disc 10, and three-phase conic rotor braking motor M obtains electric reversion operation；Transfer normally closed the of contactor KM2
Two auxiliary contact KM2-2 disconnect after, play interlocking to a liter control circuit is hung, though press at this time it is normally opened hang a liter button SB1, hang
Rising control circuit will not connect；After the normally opened third auxiliary contact KM2-3 closure for transferring contactor KM2, normally opened decentralization is pressed
Button SB2 parallel connection is self-locking, and unclamping normally opened decentralization button SB2 at this time will not influence the operation of three-phase conic rotor braking motor M；Such as want
It shutting down, presses normally closed stop button SB3 cutting decentralization control circuit, transfer contactor KM2 power loss, main contacts KM2-1 is disconnected,
Three-phase conic rotor braking motor M power loss is out of service, and electromagnetic coil YA power loss of braking, brake block 11 is pushed away brake spring 12
Dynamic lower ejection brake disc 10 carries out auxiliary brake to electric block；The auxiliary contact of decentralization contactor KM2 also reset.Due under
The L2 phase and L1 phase of control circuit connection power supply are put, therefore open-phase protection is just served to this two-phase, as long as there is a phase phase shortage, under
It puts control circuit just to disconnect, decentralization contactor KM2 can not just obtain electric, and main circuit is just not turned on；Since the coil of relay K connects
Power supply L1 phase and L3 phase are connect, therefore open-phase protection is just served to this two-phase, as long as soon as having phase phase shortage, relay K can not be obtained
Electricity, normally opened contact K-1 can not be closed, and decentralization control circuit is not turned on, and decentralization contactor KM2 also just can not energized action.
Be equipped in the present embodiment, outside the reduction gearbox 2 for control suspension hook 4 hang rise and under be placed on extreme position and stop automatically
Limiter 13 only, the limiter 13 and reduction gearbox 2 are sequentially connected；The limiter 13 is equipped with normally closed upper limit travel switch SQ1
With normally closed lower bound range switch SQ2, the normally closed upper limit travel switch SQ1, which is series at, to be hung in liter control circuit, normally closed lower restricted driving
Cheng Kaiguan SQ2 is series in decentralization control circuit.When normally closed upper limit travel switch SQ1 or normally closed lower bound range switch SQ2 is acted
When, normally-closed contact disconnects, and liter control circuit or decentralization control circuit are hung in cutting, hangs liter contactor KM1 or decentralization contactor KM2
Cutting main circuit is disconnected, three-phase conic rotor braking motor M stops operating and brakes.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, any change or replacement expected without creative work be should be covered within the scope of the utility model.
Therefore, the protection scope of the utility model should be determined by the scope of protection defined in the claims.
Claims (2)
1. a kind of double-brake electric hoist that can effectively carry out open-phase protection, including three-phase conic rotor braking motor, reel, subtract
Fast case, control cabinet, suspension hook, control button, auxiliary brake and operation circuit；The three-phase conic rotor braking motor is set to
Reel one end, the other end of one end connection reel of reduction gearbox, control cabinet are set to three-phase conic rotor braking outside motor, suspension hook
It is connected by wirerope with reel；The control button hangs a liter button, normally opened decentralization button and normally closed stop button equipped with normally opened；
The auxiliary brake is set to the other end of reduction gearbox, which includes shell, brake axle, is fixed on brake axle
The brake disc of one end, brake electromagnetic coil, brake block, the brake spring for being fixed on enclosure interior；The brake axle other end connects
The high speed shaft of reduction gearbox is connect, brake block is set between brake disc and brake electromagnetic coil, which can axially move；It is described
Brake spring is set between brake block and shell end, and pushes brake block to brake disc；
The operation circuit includes main circuit, assisting brake circuit and control circuit；The main circuit include breaker, hang rise connect
The main contacts of tentaculum, the main contacts and three-phase conic rotor braking motor for transferring contactor；The input terminal of the breaker is distinguished
Connect L1, L2, L3 phase of three phase mains；It is described hang liter contactor for control three-phase conic rotor braking motor rotating forward hang liter,
The input terminal of three of them main contacts is separately connected three output ends of breaker, and output end connects three-phase conic rotor braking motor
Input terminal；The decentralization contactor for control three-phase conic rotor braking motor reversal decentralization, three of them main contacts it is defeated
Entering three output ends that end is separately connected breaker, output end connects the input terminal of three-phase conic rotor braking motor, wherein under
The wherein two-phase for putting three main contacts output ends of contactor, which intersects, runs three-phase conic rotor braking motor reversal；
The assisting brake circuit includes brake electromagnetic coil and single-phase rectification bridge；The both ends of the brake electromagnetic coil connect respectively
Two output ends of single-phase rectification bridge are connect, two input terminals of single-phase rectification bridge are separately connected the zero curve and three-phase cone of three phase mains
One input terminal of shape rotor brake motor；It is characterized in that：
The control circuit includes hanging a liter control circuit, decentralization control circuit and L1L3 phase open-phase protection circuit；
It is described to hang L3 phase that liter control circuit includes the breaker output end being serially connected, normally opened hang a liter button, decentralization contactor
Normally closed second auxiliary contact, hang the L2 phase of a liter contactor coil, normally closed stop button and breaker output end；The liter that hangs connects
Normally opened third auxiliary contact of tentaculum and normally opened to hang liter button parallel connection self-locking；
The decentralization control circuit includes the L1 phase for the breaker output end being serially connected, normally opened decentralization button, hangs a liter contactor
Normally closed second auxiliary contact, decentralization contactor coil, normally closed stop button and breaker output end L2 phase；The decentralization connects
The normally opened third auxiliary contact of tentaculum and normally opened decentralization button parallel connection are self-locking；
The L1L3 phase open-phase protection circuit includes a relay being connected between the L1 phase of breaker output end and L3 phase,
Normally opened contact and hang a liter control circuit, decentralization control circuit connect；
A liter contactor, decentralization contactor, relay and the single-phase rectification bridge of hanging is set in control cabinet.
2. a kind of double-brake electric hoist that can effectively carry out open-phase protection according to claim 1, it is characterised in that：Institute
State be equipped with outside reduction gearbox for control suspension hook hang rise and under be placed on the self-braking limiter of extreme position, the limiter and subtract
Fast case transmission connection；The limiter is equipped with normally closed upper limit travel switch and normally closed lower bound range switchs, the normally closed upper restricted driving
Cheng Kaiguan, which is series at, to be hung in liter control circuit, and normally closed lower bound range switch is series in decentralization control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820283890.5U CN208150844U (en) | 2018-03-01 | 2018-03-01 | A kind of double-brake electric hoist that can effectively carry out open-phase protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820283890.5U CN208150844U (en) | 2018-03-01 | 2018-03-01 | A kind of double-brake electric hoist that can effectively carry out open-phase protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208150844U true CN208150844U (en) | 2018-11-27 |
Family
ID=64383118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820283890.5U Expired - Fee Related CN208150844U (en) | 2018-03-01 | 2018-03-01 | A kind of double-brake electric hoist that can effectively carry out open-phase protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208150844U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114641446A (en) * | 2019-11-12 | 2022-06-17 | 瑞尔科技有限公司 | Intelligent high-altitude installation equipment lifting device and control method thereof |
-
2018
- 2018-03-01 CN CN201820283890.5U patent/CN208150844U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114641446A (en) * | 2019-11-12 | 2022-06-17 | 瑞尔科技有限公司 | Intelligent high-altitude installation equipment lifting device and control method thereof |
| CN114641446B (en) * | 2019-11-12 | 2023-12-26 | 瑞尔科技有限公司 | Intelligent high-altitude installation equipment lifting device and control method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181127 Termination date: 20190301 |