CN208200220U - Double-brake electric hoist with open-phase protection - Google Patents
Double-brake electric hoist with open-phase protection Download PDFInfo
- Publication number
- CN208200220U CN208200220U CN201820290359.0U CN201820290359U CN208200220U CN 208200220 U CN208200220 U CN 208200220U CN 201820290359 U CN201820290359 U CN 201820290359U CN 208200220 U CN208200220 U CN 208200220U
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- China
- Prior art keywords
- phase
- brake
- liter
- decentralization
- contactor
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Abstract
The utility model relates to the double-brake electric hoists with 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 includes main circuit, assisting brake circuit, control circuit and open-phase protection circuit, and main circuit includes three phase mains, breaker, hangs a liter contactor, decentralization contactor and three-phase conic rotor braking motor；The three-phase windings of three-phase conic rotor braking motor are star-like connection；Assisting brake circuit includes single-phase rectification bridge and brake electromagnetic coil；Control circuit includes hanging liter control circuit and decentralization control circuit；Open-phase protection circuit includes capacitor and relay.The utility model can three-phase conic rotor braking motor to electric block carry out effective open-phase protection, structure is simple, the operation is stable.
Description
Technical field
The utility model relates to technical field of crane equipment, more particularly to the double-brake electric hoist with open-phase protection.
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.Make
With in the process, certain one-phase open circuit in three-phase line is usually caused due to power supply line's poor contact etc., three-phase is caused to bore
Shape rotor brake motor is burnt, and makes electric block cisco unity malfunction.
Utility model content
The utility model overcomes the deficiencies in the prior art, provides a kind of double-brake electric hoist with open-phase protection,
Can three-phase conic rotor braking motor to electric block carry out effective open-phase protection, and structure is simple, the operation is stable.
The utility model is achieved through the following technical solutions:
Double-brake electric hoist with open-phase protection, including three-phase conic rotor braking motor, reel, reduction gearbox, control
Case, 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, and suspension hook passes through steel wire
Rope is connected 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 gear is set to the other end of reduction gearbox, which includes shell, brake axle, the brake for being fixed on brake axle one end
Hull, brake electromagnetic coil, brake block, the brake spring for being fixed on enclosure interior；The brake axle other end connects reduction gearbox
High speed shaft, brake block be set to brake disc and brake electromagnetic coil between, which can axially move；The brake spring
Push brake disc between brake block and shell end, and by brake block；
The operation circuit includes main circuit, assisting brake circuit, control circuit and open-phase protection circuit；The main circuit
Including three phase mains, breaker, hang a liter contactor, decentralization contactor and three-phase conic rotor braking motor；The breaker
Input terminal is separately connected the L1 phase, L2 phase and L3 phase of three phase mains；Liter contactor that hangs is for controlling three-phase cone rotor system
Liter is hung in dynamic motor rotating forward, and one end of three of them main contacts is separately connected three output ends of breaker, and the other end is separately connected three
Three input terminals of phase conic rotor braking motor；The decentralization contactor is for controlling three-phase conic rotor braking motor reversal
Decentralization, one end of three of them main contacts are separately connected three output ends of breaker, and the other end is separately connected three-phase cone rotor
Three input terminals of braking motor；
The assisting brake circuit includes single-phase rectification bridge and brake electromagnetic coil；Two inputs of the single-phase rectification bridge
End is separately connected the zero curve of three phase mains and an input terminal of three-phase conic rotor braking motor, the both ends for the electromagnetic coil that brakes
It is separately connected two output ends of single-phase rectification bridge；
The control circuit includes hanging liter control circuit and decentralization control circuit；
It is described hang L3 phase that liter control circuit includes the breaker output end being sequentially connected in series, 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；
The decentralization control circuit includes the L1 phase of the breaker output end being sequentially connected in series, 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；
The three-phase windings of the three-phase conic rotor braking motor are star-like connection；
The open-phase protection circuit includes capacitor and relay；After the capacitor and relay coil are serially connected
One end connects the public connecting end of three-phase conic rotor braking motor three-phase windings, and the other end connects the zero curve of three phase mains；Institute
It is hung with normally opened at both ends after normally closed first contact for stating relay and the normally opened third auxiliary contact for hanging liter contactor are serially connected
Liter button parallel connection is self-locking, after normally closed second contact of the relay and the normally opened third auxiliary contact for transferring contactor are serially connected
Both ends and normally opened decentralization button it is in parallel self-locking；
A liter contactor, decentralization contactor, capacitor, 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 beneficial effects of the utility model are: form open-phase protection circuit using capacitor and relay, by capacitor and
Relay coil be serially connected after one end connection three-phase conic rotor braking motor three-phase windings public connecting end, the other end
Connect the zero curve of three phase mains；By normally closed first contact of relay and hang liter control circuit it is normally opened hang a liter button parallel connection, after
The normally opened decentralization button of normally closed second contact of electric appliance and decentralization control circuit is in parallel, can three-phase cone rotor to electric block
Braking motor carries out effective open-phase protection, and circuit structure is simple, 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, the double-brake electric hoist with open-phase protection, including three-phase cone
Shape rotor brake motor M, reel 1, reduction gearbox 2, control cabinet 3, suspension hook 4, control button 5, auxiliary brake 6 and operation electricity
Road；The three-phase conic rotor braking motor M is set to 1 one end of reel, the other end of one end connection reel 1 of reduction gearbox 2, control
Case 3 is set to outside three-phase conic rotor braking motor M, and suspension hook 4 is connected by wirerope 7 and reel 1；The control button 5 is set
Have and normally opened hangs a liter button SB1, normally opened decentralization button SB2 and normally closed stop button SB3；The auxiliary brake 6, which is set to, to slow down
The other end of case 2, the auxiliary brake 6 include shell 8, brake axle 9, the brake disc 10 for being fixed on 9 one end of brake axle, fix
Brake electromagnetic coil YA, brake block 11, brake spring 12 inside shell 8；9 other end of brake axle connects reduction gearbox 2
High speed shaft, brake block 11 be set to brake disc 10 and brake electromagnetic coil YA between, which can axially move；It is described
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, control circuit and open-phase protection circuit；The main circuit
Including three phase mains, circuit breaker Q F, hang a liter contactor KM1, decentralization contactor KM2 and three-phase conic rotor braking motor M；It is described
The input terminal of circuit breaker Q F is separately connected the L1 phase, L2 phase and L3 phase of three phase mains；It is described hang liter contactor KM1 for control three
Liter is hung in phase conic rotor braking motor M rotating forward, one end of three of them main contacts KM1-1 is separately connected three outputs of circuit breaker Q F
End, the other end are separately connected three input terminals of three-phase conic rotor braking motor M；The decentralization contactor KM2 is for controlling
Three-phase conic rotor braking motor M reversion decentralization, one end of three of them main contacts KM2-1 be separately connected circuit breaker Q F three are defeated
Outlet, the other end are separately connected three input terminals of three-phase conic rotor braking motor M；
The assisting brake circuit includes single-phase rectification bridge UR and brake electromagnetic coil YA；The two of the single-phase rectification bridge UR
A input terminal is separately connected an input terminal of the zero curve N and three-phase conic rotor braking motor M of three phase mains, and brake electromagnetic wire
The both ends of circle YA are separately connected two output ends of single-phase rectification bridge UR；
The control circuit includes hanging liter control circuit and decentralization control circuit；
It is described hang L3 phase that liter control circuit includes the circuit breaker Q F output end being sequentially connected in series, 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 decentralization control circuit includes the L1 phase for the circuit breaker Q F output end being sequentially connected in series, 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 three-phase windings of the three-phase conic rotor braking motor M are star-like connection；
The open-phase protection circuit includes capacitor C and relay K；The capacitor C and relay K coil are serially connected
The public connecting end of one end connection three-phase conic rotor braking motor M three-phase windings afterwards, the other end connect the zero of three phase mains
Line N；The normally closed first contact K-1 of the relay K and the normally opened third auxiliary contact KM1-3 for hanging liter contactor KM1 mutually go here and there
Both ends after connection hang that liter button SB1 is in parallel self-locking with normally opened, the normally closed second contact K-2 and decentralization contactor KM2 of relay K
Normally opened third auxiliary contact KM2-3 be serially connected after both ends and normally opened decentralization button SB2 it is in parallel self-locking.
The working principle of the present embodiment is: when hanging the suspension hook 4 of electric block liter, closing circuit breaker Q F, presses normally opened
A liter button SB1 is hung, liter control circuit is hung and connects, hangs a liter contactor KM1 energized action, main contacts KM1-1 closure, normally closed second
Auxiliary contact KM1-2 is disconnected, normally opened third auxiliary contact KM1-3 is closed, and main circuit is connected, and brake electromagnetic coil YA is obtained through list
Direct current after commutating phase bridge UR rectification attracts brake block 11 that the thrust of brake spring 12 and the separation of brake disc 10 is overcome to open and stop
Vehicle, three-phase conic rotor braking motor M obtain electric rotating forward operation；The normally closed second auxiliary contact KM1-2 for hanging liter contactor KM1 is disconnected
Afterwards, interlocking is played to decentralization control circuit, even if pressing normally opened decentralization button SB2 at this time, decentralization control circuit will not be connect
It is logical；After hanging the normally opened third auxiliary contact KM1-3 closure of liter contactor KM1, to hang liter button SB1 parallel connection self-locking to normally opened, at this time
Unclamping the normally opened liter button SB1 that hangs will not influence the operation of three-phase conic rotor braking motor M；Such as to stop suspension hook 4 and hang liter, press
A liter control circuit is hung in normally closed stop button SB3 cutting, hangs a liter contactor KM1 power loss, and main contacts KM1-1 is disconnected, three-phase taper
Rotor brake motor M is out of service, electromagnetic coil YA power loss of braking, and the ejection under the promotion of brake spring 12 of brake block 11 is braked
Disk 10 brakes to electric block；Auxiliary contact KM1-2, the KM1-3 for hanging liter contactor KM1 also reset.
Similarly, when transferring the suspension hook 4 of electric block, circuit breaker Q F is closed, normally opened decentralization button SB2 is pressed, transferred
Control circuit is connected, and contactor KM2 energized action is transferred, and main contacts KM2-1 closure, normally closed second auxiliary contact KM2-2 are disconnected
It opens, normally opened third auxiliary contact KM2-3 closure, main circuit is connected, and brake electromagnetic coil YA obtains rectifying through single-phase rectification bridge UR
Direct current afterwards attracts brake block 11 that the thrust of brake spring 12 and the separation of brake disc 10 is overcome to open brake, and three-phase taper turns
Sub- braking motor M obtains electric reversion operation；Transfer contactor KM2 normally closed second auxiliary contact KM2-2 disconnect after, to hanging a liter control
Circuit plays interlocking, though press at this time it is normally opened hang a liter button SB1, hanging liter control circuit will not connect；Transfer contactor
It is self-locking to normally opened decentralization button SB2 parallel connection after the normally opened third auxiliary contact KM2-3 closure of KM2, normally opened decentralization is unclamped at this time presses
Button SB2 will not influence the operation of three-phase conic rotor braking motor M；Such as to stop the decentralization of suspension hook 4, press normally closed stop button
SB3 cutting decentralization control circuit, transfers contactor KM2 power loss, main contacts KM2-1 is disconnected, three-phase conic rotor braking motor M
It is out of service, brake electromagnetic coil YA power loss, brake block 11 under the promotion of brake spring 12 ejection brake disc 10 to electronic calabash
Lu Jinhang brake；Auxiliary contact KM2-2, KM2-3 of decentralization contactor KM2 also resets.
According to three-phase conic rotor braking motor star catenation principle, when three-phase conic rotor braking motor M is operated normally,
Potential difference between the points of common connection U0 of its three-phase windings and the zero curve N of three phase mains is zero, and the coil of relay K is without electricity
Stream passes through, therefore relay K will not be attracted；As long as any phase phase shortage of three phase mains, between points of common connection U0 and zero curve N
Potential difference is just not zero, and the coil of relay K just has electric current to pass through, and relay K will be attracted, and normally-closed contact K-1, K-2 are just
It will disconnect, can not carry out in parallel self-locking to the normally opened liter button SB1 or normally opened decentralization button SB2 of hanging, hang liter control circuit or decentralization
Control circuit is also just unable to maintain that on-state, hangs liter contactor KM1 or decentralization contactor KM2 is also just unable to maintain that actuation shape
State, three-phase conic rotor braking motor M are also just unable to run, and can carry out effective phase shortage to three-phase conic rotor braking motor M
Protection；Capacitor C plays separated by direct communication, and other factors is avoided to interfere.
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. the double-brake electric hoist with 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 to reel one end, subtracts
The other end of one end connection reel of fast case, control cabinet are set to three-phase conic rotor braking outside motor, and suspension hook passes through wirerope
It is connected with reel；The control button hangs a liter button, normally opened decentralization button and normally closed stop button equipped with normally opened；The auxiliary is stopped
Vehicle device is set to the other end of reduction gearbox, which includes shell, brake axle, the brake for being fixed on brake axle one end
Disk, brake electromagnetic coil, brake block, the brake spring for being fixed on enclosure interior；The brake axle other end connection reduction gearbox
High speed shaft, brake block are set between brake disc and brake electromagnetic coil, which can axially move；The brake spring is set
Push brake disc between brake block and shell end, and by brake block；
The operation circuit includes main circuit, assisting brake circuit, control circuit and open-phase protection circuit；The main circuit includes
Three phase mains, breaker hang a liter contactor, decentralization contactor and three-phase conic rotor braking motor；The input of the breaker
End is separately connected the L1 phase, L2 phase and L3 phase of three phase mains；Liter contactor that hangs is for controlling three-phase conic rotor braking electricity
Liter is hung in machine rotating forward, and one end of three of them main contacts is separately connected three output ends of breaker, and the other end is separately connected three-phase cone
Three input terminals of shape rotor brake motor；The decentralization contactor is for controlling under three-phase conic rotor braking motor reversal
It puts, one end of three of them main contacts is separately connected three output ends of breaker, and the other end is separately connected three-phase cone rotor system
Three input terminals of dynamic motor；
The assisting brake circuit includes single-phase rectification bridge and brake electromagnetic coil；Two input terminals of the single-phase rectification bridge point
Not Lian Jie the zero curve of three phase mains and an input terminal of three-phase conic rotor braking motor, the electromagnetic coil that brakes both ends difference
Connect two output ends of single-phase rectification bridge；
The control circuit includes hanging liter control circuit and decentralization control circuit；
It is described to hang L3 phase that liter control circuit includes the breaker output end being sequentially connected in series, 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 decentralization control circuit includes the L1 phase for the breaker output end being sequentially connected in series, 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；Its feature exists
In:
The three-phase windings of the three-phase conic rotor braking motor are star-like connection；
The open-phase protection circuit includes capacitor and relay；The capacitor and relay coil be serially connected after one end
The public connecting end of three-phase conic rotor braking motor three-phase windings is connected, the other end connects the zero curve of three phase mains；It is described after
Normally closed first contact of electric appliance and the normally opened third auxiliary contact for hanging liter contactor be serially connected after both ends and it is normally opened hang rise by
Button parallel connection is self-locking, the normally opened third auxiliary contact of normally closed second contact of the relay and decentralization contactor be serially connected after two
It holds in parallel self-locking with normally opened decentralization button；
A liter contactor, decentralization contactor, capacitor, relay and the single-phase rectification bridge of hanging is set in control cabinet.
2. the double-brake electric hoist according to claim 1 with open-phase protection, it is characterised in that: outside the reduction gearbox
Equipped with for control suspension hook hang rise and under be placed on the self-braking limiter of extreme position, the limiter and reduction gearbox transmission connect
It connects；The limiter is equipped with normally closed upper limit travel switch and normally closed lower bound range switchs, the normally closed upper limit travel switch series connection
In hanging in liter control circuit, normally closed lower bound range switch is series in decentralization control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820290359.0U CN208200220U (en) | 2018-03-02 | 2018-03-02 | Double-brake electric hoist with open-phase protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820290359.0U CN208200220U (en) | 2018-03-02 | 2018-03-02 | Double-brake electric hoist with open-phase protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208200220U true CN208200220U (en) | 2018-12-07 |
Family
ID=64534703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820290359.0U Expired - Fee Related CN208200220U (en) | 2018-03-02 | 2018-03-02 | Double-brake electric hoist with open-phase protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208200220U (en) |
-
2018
- 2018-03-02 CN CN201820290359.0U patent/CN208200220U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181207 Termination date: 20190302 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |