CN203722535U - Energy-saving type hoist variable-frequency speed control system - Google Patents
Energy-saving type hoist variable-frequency speed control system Download PDFInfo
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- CN203722535U CN203722535U CN201420122059.3U CN201420122059U CN203722535U CN 203722535 U CN203722535 U CN 203722535U CN 201420122059 U CN201420122059 U CN 201420122059U CN 203722535 U CN203722535 U CN 203722535U
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Abstract
The utility model discloses an energy-saving type winch variable-frequency speed control system which comprises a main loop, a control loop and an electromagnetic brake powder failure braking loop. A vibration generator, a rectification filter circuit and a storage battery which are connected in sequence are further included. The main loop comprises a power grid, a variable-frequency speed regulator and a winch motor. The control loop comprises a control circuit, a display screen, an indicating lamp and a button, and the display screen, the indicating lamp and the button are connected with the control circuit. The storage battery is connected with the direct-current side of the variable-frequency speed regulator. The electromagnetic brake powder failure braking loop comprises an electromagnet and a brake device which are connected in sequence, the electromagnet comprises an electromagnet coil and an electromagnet core, and the electromagnet coil is connected with the power grid. The brake device comprises a spring, a brake block and a brake wheel, and the brake wheel is coaxially connected with a rotary shaft of the winch motor. The system is provided with the storage battery and an electromagnetic brake power failure braking device, the storage battery can store electric energy formed by converting various kinds of vibration mechanical energy on a construction site, and the system saves energy, and is environmentally friendly, safe, simple in structure and easy to operate.
Description
Technical field
The utility model belongs to the fields such as building, metallurgy, mine, relates to a kind of energy-saving hoist engine frequency conversion speed-adjusting system.
Background technology
Existing hoist system comprises hoist engine, cage, dragging motor, hydraulic mechanical band-type brake device etc., when cage is transferred, motor is in regenerative power generation state, regenerated energy is consumed in brake resistance, not only caused the waste of energy, and causing the temperature of environment to rise, impact is the useful life of electric equipment around.Simultaneously hydraulic mechanical band-type brake device needs highly pressurised liquid and oil cylinder, causes systems bulky, forms complicatedly, and complicated operation, failure rate are high.When motor power-off, if highly pressurised liquid promotes oil cylinder, can offset the clamping force of spring, friction is reduced, thereby the clamping force of band-type brake is reduced, braking weakens, and is easy to cause weight to fall and cause the accident voluntarily.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of energy-saving hoist engine frequency conversion speed-adjusting system, be provided with storage battery and electromagnetic brake-contracting cut-off brake device, can be by electrical power storage in storage battery during in regenerative power generation state at motor, storage battery can also be stored in the electric energy that on construction site, various vibration mechanical energies convert.Storage battery can be powered to DC load.Electromagnetic brake-contracting cut-off brake device is when the unexpected power-off of motor, and energy brake hard, prevents that weight from falling and causing the accident voluntarily, and energy-saving environmental protection safety is simple in structure, simple to operate.
The technical solution of utility model is as follows:
An energy-saving hoist engine frequency conversion speed-adjusting system, comprises major loop, control loop and electromagnetic brake-contracting cut-off brake loop.Major loop comprises electrical network, variable-frequency governor and the hoist engine motor being electrically connected successively, and variable-frequency governor comprises rectifier, power factor correction circuit, the inverter being electrically connected successively.Also comprise the vibrating electricity generator, current rectifying and wave filtering circuit, the storage battery that connect successively.Control loop comprises control circuit, the display screen being connected with control circuit, indicator light, button.Storage battery is connected with variable-frequency governor DC side.Control circuit is connected with hoist engine motor, variable-frequency governor.Electromagnetic brake-contracting cut-off brake loop comprises electromagnet and the band brake apparatus connecting successively, and electromagnet comprises electromagnet coil and electromagnet core, and electromagnet coil is connected with electrical network.Band brake apparatus comprises spring, brake shoe, brake wheel, and brake wheel is coaxially connected with hoist engine machine shaft.
Control circuit is PLC controller.
Beneficial effect:
The energy-saving hoist engine frequency conversion speed-adjusting system of the utility model, be provided with storage battery and electromagnetic brake-contracting cut-off brake device, can be by electrical power storage in storage battery during in regenerative power generation state at motor, storage battery can also be stored in the electric energy that on construction site, various vibration mechanical energies convert.Storage battery can be powered to DC load.Electromagnetic brake-contracting cut-off brake device is when the unexpected power-off of motor, and energy brake hard, prevents that weight from falling and causing the accident voluntarily, and energy-saving environmental protection safety is simple in structure, simple to operate.
Accompanying drawing explanation
Fig. 1 is the energy-saving hoist engine frequency conversion speed-adjusting system of the utility model block diagram.
Embodiment
Below with reference to the drawings and specific embodiments, the utility model is described in further details:
As shown in Figure 1, a kind of energy-saving hoist engine frequency conversion speed-adjusting system, comprises major loop, control loop and electromagnetic brake-contracting cut-off brake loop.Major loop comprises electrical network, variable-frequency governor and the hoist engine motor being electrically connected successively, and variable-frequency governor comprises rectifier, power factor correction circuit, the inverter being electrically connected successively.Also comprise the vibrating electricity generator, current rectifying and wave filtering circuit, the storage battery that connect successively.Control loop comprises control circuit, the display screen being connected with control circuit, indicator light, button.Storage battery is connected with variable-frequency governor DC side.Control circuit is connected with hoist engine motor, variable-frequency governor.Electromagnetic brake-contracting cut-off brake loop comprises electromagnet and the band brake apparatus connecting successively, and electromagnet comprises electromagnet coil and electromagnet core, and electromagnet coil is connected with electrical network.Band brake apparatus comprises spring, brake shoe, brake wheel, and brake wheel is coaxially connected with hoist engine machine shaft.
Power factor correction circuit adopts discrete insulated gate bipolar transistor IGBT and fast recovery diode to realize Active PFC.Control circuit is PLC controller.Control circuit, according to circuit information, is differentiated hoist engine machine operation in motor-operated running state or energy feedback state, to drive inverter work and feedback electric energy is stored in storage battery.Storage battery is connected with variable-frequency governor DC side, at cage, declines, and motor arrives storage battery by electrical power storage in real time when regenerative braking state.Simultaneously, on building site due to hoist engine work such as building, metallurgy, mines, conventionally have abundant vibration mechanical energy, vibrating electricity generator converts these vibration mechanical energies to electric energy, through current rectifying and wave filtering circuit rectifying and wave-filtering, flow to storage battery, storage battery can be powered to DC load.
User is completed the control operation of frequency converter and parameter is arranged by button, control circuit is controlled the motor speed of service, operating state and job information, and the speed of service of motor, operating state, fault message and mode of operation are shown by display screen and indicator light, its implementation procedure, belong to prior art, at the course < < PLC that Ge great colleges and universities electrical automation is offered now, control in programming and application > > and tell about.For control circuit, the utility model only relates to its hardware circuit, does not relate to its software and method.
In electromagnetic brake-contracting cut-off brake loop, when motor is switched on, electromagnet coil power, electromagnet core adhesive, the pulling force that overcomes spring separates the brake shoe of band brake apparatus and brake wheel, and motor runs well.When motor runs into unexpected powering-off state, electromagnet coil dead electricity, electromagnet core separates under spring tension effect, and makes brake shoe tightly embrace brake wheel, and motor is braked and stall, and while preventing the unexpected power-off of motor, weight falls voluntarily and causes the accident.
The energy-saving hoist engine frequency conversion speed-adjusting system of the utility model, be provided with storage battery and electromagnetic brake-contracting cut-off brake device, can be by electrical power storage in storage battery during in regenerative power generation state at motor, storage battery can also be stored in the electric energy that on construction site, various vibration mechanical energies convert.Storage battery can be powered to DC load.Electromagnetic brake-contracting cut-off brake device is when the unexpected power-off of motor, and energy brake hard, prevents that weight from falling and causing the accident voluntarily, and energy-saving environmental protection safety is simple in structure, simple to operate.
Claims (2)
1. an energy-saving hoist engine frequency conversion speed-adjusting system, comprises major loop, control loop and electromagnetic brake-contracting cut-off brake loop;
Described major loop comprises electrical network, variable-frequency governor and the hoist engine motor being electrically connected successively, and described variable-frequency governor comprises rectifier, power factor correction circuit, the inverter being electrically connected successively; It is characterized by,
Also comprise the vibrating electricity generator, current rectifying and wave filtering circuit, the storage battery that connect successively;
Described control loop comprises control circuit, the display screen being connected with control circuit, indicator light, button;
Described storage battery is connected with variable-frequency governor DC side;
Described control circuit is connected with hoist engine motor, variable-frequency governor;
Described electromagnetic brake-contracting cut-off brake loop comprises electromagnet and the band brake apparatus connecting successively, and described electromagnet comprises electromagnet coil and electromagnet core, and described electromagnet coil is connected with electrical network; Described band brake apparatus comprises spring, brake shoe, brake wheel, and described brake wheel is coaxially connected with hoist engine machine shaft.
2. energy-saving hoist engine frequency conversion speed-adjusting system as claimed in claim 1, is characterized by, and described control circuit is PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420122059.3U CN203722535U (en) | 2014-03-11 | 2014-03-11 | Energy-saving type hoist variable-frequency speed control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420122059.3U CN203722535U (en) | 2014-03-11 | 2014-03-11 | Energy-saving type hoist variable-frequency speed control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203722535U true CN203722535U (en) | 2014-07-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420122059.3U Expired - Fee Related CN203722535U (en) | 2014-03-11 | 2014-03-11 | Energy-saving type hoist variable-frequency speed control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203722535U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888111A (en) * | 2017-11-05 | 2018-04-06 | 台州市宙义机电有限公司 | A kind of Quick-speed braking arrangement for threephase asynchronous machine |
-
2014
- 2014-03-11 CN CN201420122059.3U patent/CN203722535U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888111A (en) * | 2017-11-05 | 2018-04-06 | 台州市宙义机电有限公司 | A kind of Quick-speed braking arrangement for threephase asynchronous machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20150311 |
|
| EXPY | Termination of patent right or utility model |