CN221070916U - Electric lifting system for aviation ground well - Google Patents
Electric lifting system for aviation ground well Download PDFInfo
- Publication number
- CN221070916U CN221070916U CN202322869317.6U CN202322869317U CN221070916U CN 221070916 U CN221070916 U CN 221070916U CN 202322869317 U CN202322869317 U CN 202322869317U CN 221070916 U CN221070916 U CN 221070916U
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- contactor
- frequency converter
- switch
- relay
- ground well
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- 101100011886 Arabidopsis thaliana SQE4 gene Proteins 0.000 description 5
- 229910020246 KBO2 Inorganic materials 0.000 description 3
- 101150043124 kmo-1 gene Proteins 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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Abstract
The utility model relates to an electric lifting system of an aviation ground well, which comprises an electric lifting mechanism and a controller; the controller comprises an upper travel switch, a lower travel switch, an upper protection switch, a lower protection switch, an upper proximity switch, a lower proximity switch, a first contactor, a second contactor, a first relay, a second relay and a frequency converter; the utility model adopts the controller to automatically control the motor in the electric lifting mechanism to run, and the whole lifting mechanism of the ground well runs more stably and accurately due to the smoothness, continuity and operability of the motor, thereby effectively avoiding the mechanical faults of the ground well caused by too high speed and too large impact in the mechanical lifting process, improving the service life and the perfection rate of equipment, and reducing the fault rate of the ground well, the damage and replacement cost of spare parts and the labor cost.
Description
Technical Field
The utility model relates to the field of lifting control, in particular to an electric lifting system for an aviation ground well.
Background
Within an airport, an aeronautical well is typically a terminal output device that provides reliable 400Hz stationary power, ground air conditioning, and utility power during an aircraft landing on the ground. The existing aviation ground well generally adopts a manual control mode, and in the operation process, the lifting of the ground well is influenced by impact force, so that mechanical faults such as main body frame open welding, ground well cover deviation, air conditioner pipe lift car deflection falling, linear bearing damage and the like frequently occur, and the normal arrival and departure of an aircraft and the normal supply of energy are directly influenced.
Disclosure of utility model
The technical problem to be solved by the utility model is to provide an aviation ground well electric lifting system which is manually replaced by electric power, so that mechanical faults caused by impact force in the lifting process of the ground well are avoided and reduced.
The technical scheme for solving the technical problems is as follows: an electric lifting system of an aviation ground well comprises an electric lifting mechanism and a controller; the electric lifting mechanism comprises a motor;
The controller comprises an upper travel switch, a lower travel switch, an upper protection switch, a lower protection switch, an upper proximity switch, a lower proximity switch, a first contactor, a second contactor, a first relay, a second relay and a frequency converter;
The lower limit normally closed point of the lower travel switch, the upper protection switch, the normally closed point of the first relay, the normally closed point of the second contactor and the coil of the first contactor are connected in series to form a first serial path and are connected between a live wire and a zero wire;
the upper limit normally closed point of the upper travel switch, the lower protection switch, the normally closed point of the second relay, the normally closed point of the first contactor and the coil of the second contactor are connected in series to form a second serial path and are connected between the live wire and the zero wire;
The upper proximity switch is connected in parallel with an upper limit normally open point of the upper travel switch and then connected in series with a coil of the first relay to form a first serial-parallel mixed passage and connected between the positive electrode and the negative electrode of a control loop power supply;
the lower proximity switch is connected in parallel with a lower limit normally open point of the lower travel switch and then connected in series with a coil of the second relay to form a second serial-parallel mixed passage and connected between the positive electrode and the negative electrode of a control loop power supply;
The motor is connected to a three-phase power supply through a main circuit wiring terminal of the frequency converter, a normally open point of the first contactor is connected between one control wiring terminal and an internal power supply terminal of the frequency converter, and a normally open point of the second contactor is connected between the other control wiring terminal and the internal power supply terminal of the frequency converter.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, the control loop power supply is specifically an AC220V/DC24V power supply, and two input ends of the control loop power supply are respectively connected with a live wire and a zero wire.
Further, a thermal relay is connected in series between the frequency converter and the motor.
Further, a switch is connected in series between the frequency converter and the three-phase power supply.
Further, the frequency converter is specifically an ATV320 series frequency converter, a normally open point of the first contactor is connected between a L I control wiring terminal and an internal 24V power terminal of the frequency converter, and a normally open point of the second contactor is connected between a L I4 control wiring terminal and an internal 24 power terminal of the frequency converter.
The beneficial effects of the utility model are as follows: according to the utility model, the manual lifting mechanism is upgraded into the electric lifting mechanism, and the motor in the electric lifting mechanism is automatically controlled to operate by adopting the controller, so that the whole operation of the lifting mechanism of the ground well is more stable and accurate due to the smoothness, continuity and operability of the motor operation, the mechanical failure of the ground well caused by too high speed and too large impact in the mechanical lifting process is effectively avoided, the service life and the perfection rate of equipment are improved, and the fault rate of the ground well, the replacement cost due to damage of spare parts and the labor cost are reduced; meanwhile, the operator can use the device more conveniently and quickly.
Drawings
Fig. 1 is an electrical schematic diagram of an electric lifting system for an aeronautical ground well.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
An electric lifting system for an aviation ground well comprises an electric lifting mechanism and a controller. As shown in fig. 1, the electric lifting mechanism comprises a motor M; the controller comprises an upper travel switch SQ1, a lower travel switch SQ2, an upper protection switch KBO1, a lower protection switch KBO2, an upper proximity switch SQP1, a lower proximity switch SQP2, a first contactor KM1, a second contactor KM2, a first relay KA1, a second relay KA2 and a frequency converter VFD; the lower limit normally closed point of the lower travel switch SQ2, the upper protection switch KBO1, the normally closed point of the first relay KA1, the normally closed point of the second contactor KM2 and the coil of the first contactor KM1 are connected in series to form a first series path and are connected between a live wire L and a null wire N; the upper limit normally closed point of the upper travel switch SQ1, the lower protection switch KBO2, the normally closed point of the second relay KA2, the normally closed point of the first contactor KM1 and the coil of the second contactor KM2 are connected in series to form a second series path and are connected between a live wire L and a null wire N; the upper proximity switch SQP1 is connected in parallel with an upper limit normally open point of the upper travel switch SQ1 and then connected in series with a coil of the first relay KA1 to form a first serial-parallel mixed passage and connected between the anode and the cathode of a control loop power supply POW; the lower proximity switch SQP2 is connected in parallel with a lower limit normally open point of the lower travel switch SQ2 and then connected in series with a coil of the second relay KA2 to form a second serial-parallel mixed passage and connected between the anode and the cathode of an external POW power supply; the motor M is connected to a three-phase power supply through a main circuit wiring terminal of the frequency converter VFD, a normally open point of the first contactor KM1 is connected between one control wiring terminal and an internal power terminal of the frequency converter VFD, and a normally open point of the second contactor KM2 is connected between the other control wiring terminal and the internal power terminal of the frequency converter VFD.
In the present utility model: the control loop power supply source POW is specifically an AC220V/DC24V power supply source, and two input ends of the control loop power supply source POW are respectively connected with a live wire L and a zero wire N. A thermal relay RJ is connected in series between the VFD and the motor. A switch DQ is connected in series between the frequency converter VFD and the three-phase power supply. The converter VFD is specifically an ATV320 series converter, the normally open point of the first contactor KM1 is connected between a L I control wiring terminal and an internal 24V power terminal of the converter VFD, and the normally open point of the second contactor KM2 is connected between a L I control wiring terminal and an internal 24 power terminal of the converter VFD.
The utility model is arranged in a ground well, on the basis of not changing the original mechanical structure of the existing manual lifting ground well, a rack is additionally arranged on a fixed frame, a set of motor and a reduction gearbox are additionally arranged on a movable frame, the two are meshed together through gears, and the fixed frame, the movable frame, the motor and the reduction gearbox form an electric lifting mechanism in the utility model; the controller controls the start and stop of the motor, so that the working process of uniform and stable lifting and lowering of the movable frame is realized. Wherein, the upper travel switch SQ1 and the upper proximity switch SQP1 in the controller are installed at the top of the ground well, and the lower travel switch SQ2 and the lower proximity switch SQP2 are installed at the bottom of the ground well.
In the normal state: the movable frame is at the lowest position, at the moment, the lower limit normally-closed point of the lower travel switch SQ2 is disconnected, the coil of the first contactor KM1 is not electrified, the frequency converter VFD is not operated, the motor M is not operated, the lower limit normally-open point of the lower travel switch SQ2 is closed, the lower proximity switch SQP2 is connected, the coil of the second relay KA2 is electrified, the normally-closed point of the second relay KA2 is disconnected, the lower protection switch KBO2 is disconnected, the coil of the second contactor KM2 is not electrified, and the motor M is not operated;
And (3) lifting the ground well: pulling up the hand-held lock, and closing a lower limit normally closed point of the lower travel switch SQ 2; because the upper protection switch KMO1 (the upper protection switch KMO1 is a normally closed protection switch), the normally closed point of the first relay KA1 and the normally closed point of the second contactor KM2 are closed at the moment, the first serial passage is conducted, and the coil of the first contactor KM1 is electrified; when the coil of the first contactor KM1 is powered on, the normally open point of the first contactor KM1 is closed, so that the inverter VFD works, and the motor M starts to operate, so as to drive the moving frame to rise. When the movable frame rises to a position close to the top of the ground well, the upper proximity switch SQP1 acts, the first serial-parallel mixed channel is conducted, so that the coil of the first relay KA1 is electrified, the normally closed point of the first relay KA1 is disconnected after the coil of the first relay KA1 is electrified, the second serial-connection channel is disconnected, so that the coil of the first contactor KM1 is deenergized, the normally open point of the first contactor KM1 is disconnected, the frequency converter VFD stops working, the motor M stops running, and meanwhile, the upper protection switch KMO1 is turned on to serve as a secondary protection effect, and the movable frame stops rising at the moment and reaches the top of the ground well and is locked.
The ground is lowered: the pedal lock is stepped on, and the upper limit normally closed point of the upper travel switch SQ1 is closed, so that the second serial passage is conducted, and the coil of the second contactor KM2 is electrified because the lower protection switch KMO2 (the lower protection switch KMO2 is the normally closed protection switch), the normally closed point of the second relay KA2 and the normally closed point of the first contactor KM1 are all closed at the moment; when the coil of the second contactor KM2 is powered on, the normally open point of the second contactor KM2 is closed, so that the inverter VFD works, and the motor M starts to operate, so as to drive the moving frame to descend. When the movable frame descends to a position close to the bottom of the ground well, the lower proximity switch SQP2 acts, the second serial-parallel mixed channel is conducted, so that the coil of the second relay KA2 is electrified, after the coil of the second relay KA2 is electrified, the normally closed point of the second relay KA2 is disconnected, the first serial channel is disconnected, so that the coil of the second contactor KM2 is powered off, the normally open point of the second contactor KM2 is disconnected, the frequency converter VFD stops working, the motor M stops running, and meanwhile, the lower protection switch KMO2 is disconnected to serve as a secondary protection function. At this time, the movable frame stops descending, reaches the bottom position of the ground well and is locked.
In the utility model, the uniform ascending speed of the ground well is 0.1m/s, and the uniform descending speed is 0.12m/s; and the top and the bottom of the ground well are respectively provided with a proximity switch and a travel switch for double-layer protection, so that the movable frame can be accurately stopped and locked after being in place.
According to the utility model, the manual lifting mechanism is upgraded into the electric lifting mechanism, and the motor in the electric lifting mechanism is automatically controlled to operate by adopting the controller, so that the whole operation of the lifting mechanism of the ground well is more stable and accurate due to the smoothness, continuity and operability of the motor operation, the mechanical failure of the ground well caused by too high speed and too large impact in the mechanical lifting process is effectively avoided, the service life and the perfection rate of equipment are improved, and the fault rate of the ground well, the replacement cost due to damage of spare parts and the labor cost are reduced; meanwhile, the operator can use the device more conveniently and quickly.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (5)
1. An aviation ground well electric lifting system which is characterized in that: comprises an electric lifting mechanism and a controller; the electric lifting mechanism comprises a motor;
The controller comprises an upper travel switch, a lower travel switch, an upper protection switch, a lower protection switch, an upper proximity switch, a lower proximity switch, a first contactor, a second contactor, a first relay, a second relay and a frequency converter;
The lower limit normally closed point of the lower travel switch, the upper protection switch, the normally closed point of the first relay, the normally closed point of the second contactor and the coil of the first contactor are connected in series to form a first serial path and are connected between a live wire and a zero wire;
the upper limit normally closed point of the upper travel switch, the lower protection switch, the normally closed point of the second relay, the normally closed point of the first contactor and the coil of the second contactor are connected in series to form a second serial path and are connected between the live wire and the zero wire;
The upper proximity switch is connected in parallel with an upper limit normally open point of the upper travel switch and then connected in series with a coil of the first relay to form a first serial-parallel mixed passage and connected between the positive electrode and the negative electrode of a control loop power supply;
the lower proximity switch is connected in parallel with a lower limit normally open point of the lower travel switch and then connected in series with a coil of the second relay to form a second serial-parallel mixed passage and connected between the positive electrode and the negative electrode of a control loop power supply;
The motor is connected to a three-phase power supply through a main circuit wiring terminal of the frequency converter, a normally open point of the first contactor is connected between one control wiring terminal and an internal power supply terminal of the frequency converter, and a normally open point of the second contactor is connected between the other control wiring terminal and the internal power supply terminal of the frequency converter.
2. The aircraft ground well electric lift system of claim 1, wherein: the control loop power supply is specifically an AC220V/DC24V power supply, and two input ends of the control loop power supply are respectively connected with a live wire and a zero wire.
3. The aircraft ground well electric lift system of claim 1, wherein: a thermal relay is connected in series between the frequency converter and the motor.
4. The aircraft ground well electric lift system of claim 1, wherein: a switch is connected in series between the frequency converter and the three-phase power supply.
5. An aircraft ground well electric lift system in accordance with any one of claims 1 to 4, characterized in that: the frequency converter is specifically an ATV320 series frequency converter, a normally open point of the first contactor is connected between an LI 1 control wiring terminal and an internal 24V power terminal of the frequency converter, and a normally open point of the second contactor is connected between an LI4 control wiring terminal and the internal 24V power terminal of the frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322869317.6U CN221070916U (en) | 2023-10-25 | 2023-10-25 | Electric lifting system for aviation ground well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322869317.6U CN221070916U (en) | 2023-10-25 | 2023-10-25 | Electric lifting system for aviation ground well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221070916U true CN221070916U (en) | 2024-06-04 |
Family
ID=91261387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322869317.6U Active CN221070916U (en) | 2023-10-25 | 2023-10-25 | Electric lifting system for aviation ground well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221070916U (en) |
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2023
- 2023-10-25 CN CN202322869317.6U patent/CN221070916U/en active Active
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