CN113003327B - PLC (programmable logic controller) control-based high-speed construction elevator electric control system and control method thereof - Google Patents
PLC (programmable logic controller) control-based high-speed construction elevator electric control system and control method thereof Download PDFInfo
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- CN113003327B CN113003327B CN202110350409.6A CN202110350409A CN113003327B CN 113003327 B CN113003327 B CN 113003327B CN 202110350409 A CN202110350409 A CN 202110350409A CN 113003327 B CN113003327 B CN 113003327B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
- B66B1/14—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. push-buttons, for indirect control of movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
- B66B1/3423—Control system configuration, i.e. lay-out
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/46—Adaptations of switches or switchgear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
- B66B11/0233—Lighting systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
- B66B11/024—Ventilation systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
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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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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Elevator Control (AREA)
Abstract
The invention discloses a PLC (programmable logic controller) control-based high-speed construction elevator electric control system and a control method thereof. According to the invention, the driver fixedly installed on one side of the suspension cage and the frequency converter fixedly installed at the bottom end inside the electric control cabinet are adopted, the frequency converter controls the drivers connected in parallel by three groups of motors in an open loop mode in a multi-section line VF control mode, and the frequency converter is used for controlling the drivers, so that the speed of the construction elevator can be increased, the construction efficiency of the construction elevator is high, and the construction quality and progress are improved.
Description
Technical Field
The invention relates to the technical field of highway construction, in particular to an electric control system of a high-speed construction elevator based on PLC control and a control method thereof.
Background
Construction elevator widely is applied to fields such as city high-rise engineering building, the rapid development in city in recent years, various super high-rise buildings pull out the ground, the construction elevator speed of being applied to super high-rise building is 63m/min mostly, and transmission motor power 75kw, and need use high-speed construction elevator electrical system in the use of high-speed construction elevator, current high-speed construction elevator electrical system has many problems or defects:
in practical use, when the traditional high-speed construction elevator electric control system is used for a high-rise building, construction efficiency is low, construction quality and progress are affected, functions are added, and a circuit of a control system needs to be enlarged, so that the system becomes too bulky and complicated, and the workload of design and installation of the whole system is very large, so that the system cannot be completed.
Disclosure of Invention
The invention aims to provide a high-speed construction elevator electric control system based on PLC control and a control method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high-speed construction elevator electrical system based on PLC control, includes cage and end cage electric box, the inside fixed mounting of cage has automatically controlled cabinet, the inside bottom fixed mounting of automatically controlled cabinet has the converter, the inside top fixed mounting of automatically controlled cabinet has control assembly, control assembly's bottom fixed mounting has contact module, contact module's bottom fixed mounting has anti-falling assembly, the inside top fixed mounting of end cage electric box has the circuit breaker, the inside bottom fixed mounting of end cage electric box has ac contactor.
Preferably, the hinge is installed to the bottom equidistance of automatically controlled cabinet one side, and the articulated cabinet door of installing in one side of hinge, the fixed first installing port that is provided with in top on automatically controlled cabinet surface, the fixed second installing port that is provided with in bottom of first installing port, the inside surperficial equidistance of automatically controlled cabinet is provided with the wiring hole, the baffle is installed to the inside bottom equidistance of automatically controlled cabinet.
Preferably, the control assembly includes eight lines PLC controller, and one side of eight lines PLC controller bottom is fixed and is provided with first four-wire PLC controller, and one side of first four-wire PLC controller is fixed and is provided with second four-wire PLC controller, and one side of second four-wire PLC controller is fixed and is provided with third four-wire PLC controller, and one side of third four-wire PLC controller is fixed and is provided with fourth four-wire PLC controller.
Preferably, the contact assembly includes a main contactor, a safety contactor is fixedly arranged on one side of the main contactor, a descending contactor is fixedly arranged on one side of the safety contactor, a brake contactor is fixedly arranged at the bottom of the descending contactor, a high-speed contactor is fixedly arranged on one side of the brake contactor, and an ascending contactor is fixedly arranged on one side of the high-speed contactor.
Preferably, prevent weighing down the subassembly and include cage top cage internal conversion contactor, the fixed conversion box that is provided with in one side of cage top cage internal conversion contactor, the fixed anti-falling box that is provided with of opposite side of cage top cage internal conversion contactor.
Preferably, one side of the interior of the cage is fixedly provided with an illuminating lamp, the top end of the interior of the cage is fixedly provided with a heat dissipation fan, and one side of the cage is fixedly provided with a driver.
Preferably, the transmission is formed by connecting three groups of motors in parallel, and the output power of the motors is thirty-two kW.
An electric control method of a high-speed construction elevator based on PLC control comprises the following steps:
s1, firstly, a driver fixedly installed on one side of a suspension cage and a frequency converter fixedly installed at the bottom end inside an electric control cabinet are used, one frequency converter controls the drivers connected with three groups of motors in parallel in an open-loop mode through a multi-segment line VF control mode, the speed of a construction elevator can be increased by utilizing the frequency converter to control the driver, the construction efficiency of the construction elevator for a high-rise building is high, and the construction quality and progress are improved.
And S2, secondly, when the conversion contactor is connected into the conversion box in the cage top cage, the cage top cage can be switched to a cage top operation mode through the contact component fixedly mounted at the bottom of the control component and the anti-falling component fixedly mounted at the bottom of the contact component, the eight-wire PLC controller, the first four-wire PLC controller, the second four-wire PLC controller, the third four-wire PLC controller and the fourth four-wire PLC controller are responsible for program logic control and signal acquisition of the states of the limit switches, and the eight-wire PLC controller, the first four-wire PLC controller, the second four-wire PLC controller, the third four-wire PLC controller and the fourth four-wire PLC controller are utilized to enable the system to be easy and simple to program, flexible in configuration and strong in function expansibility, complete in input/output function modules, convenient to install and fast in operation speed, and facilitate workers to install and use the electric control system.
S3, finally, through the circuit breakers which are installed at the top end of the inner portion of the bottom cage electric box at equal intervals and the alternating current contactors which are fixedly installed at the bottom end of the inner portion of the bottom cage electric box, the first circuit breaker can be responsible for switching on and off of a main power supply of the elevator, the second circuit breaker is responsible for switching on and off of a coil power supply of the alternating current contactor, the bottom cage electric box is utilized to facilitate a worker to switch on and off the construction elevator, and convenience in construction upgrading is improved.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the driver fixedly installed on one side of the suspension cage and the frequency converter fixedly installed at the bottom end inside the electric control cabinet are adopted, the frequency converter controls the drivers connected in parallel by three groups of motors in an open loop mode in a multi-section line VF control mode, and the frequency converter is used for controlling the drivers, so that the speed of the construction elevator can be increased, the construction efficiency of the construction elevator is high, and the construction quality and progress are improved.
According to the invention, through the contact assembly fixedly installed at the bottom of the control assembly and the anti-falling assembly fixedly installed at the bottom of the contact assembly, when the conversion contactor in the cage top cage is connected into the conversion box, the cage top operation mode can be switched, the eight-wire PLC controller, the first four-wire PLC controller, the second four-wire PLC controller, the third four-wire PLC controller and the fourth four-wire PLC controller are responsible for program logic control and signal acquisition of the states of the limit switches, and the eight-wire PLC controller, the first four-wire PLC controller, the second four-wire PLC controller, the third four-wire PLC controller and the fourth four-wire PLC controller are utilized to enable the system to be easy and simple to program, flexible in configuration function expansibility, complete in input/output function modules, convenient to install, fast in operation speed and convenient for workers to install and use the electric control system.
According to the invention, through the circuit breakers equidistantly arranged at the top end inside the bottom cage electric box and the alternating current contactors fixedly arranged at the bottom end inside the bottom cage electric box, the first circuit breaker can be responsible for switching on and off the main power supply of the elevator, the second circuit breaker is responsible for switching on and off the coil power supply of the alternating current contactor, and the bottom cage electric box can be utilized to facilitate the working personnel to switch on and off the construction elevator, so that the convenience of construction upgrading is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a partial structure of the electrical box of the bottom cage according to the present invention;
FIG. 3 is a schematic view of a partial cross-sectional structure of the present invention;
FIG. 4 is a schematic view of a partial structure of an electric control cabinet according to the present invention;
FIG. 5 is a circuit diagram of a control device according to the present invention;
FIG. 6 is a schematic diagram of a circuit structure of the frequency converter according to the present invention;
FIG. 7 is a schematic view of the anti-falling box, the heat dissipation fan and the lighting lamp circuit structure of the invention.
In the figure: 1. an electric control cabinet; 101. a hinge; 102. a cabinet door; 103. a first mounting port; 104. a second mounting opening; 105. a wiring hole; 106. a partition plate; 2. a control component; 201. an eight-wire PLC controller; 202. a first four-wire PLC controller; 203. a second four-wire PLC controller; 204. a third four-wire PLC controller; 205. a fourth four-wire PLC controller; 3. a contact assembly; 301. a main contactor; 302. a safety contactor; 303. raising the contactor; 304. lowering the contactor; 305. a high-speed contactor; 306. a brake contactor; 4. a fall arrest assembly; 401. a switch box; 402. a switching contactor is arranged in the cage top cage; 403. an anti-falling box; 5. a frequency converter; 6. a bottom cage electrical box; 7. a circuit breaker; 8. an AC contactor; 9. hoisting a cage; 901. a heat dissipation fan; 902. an illuminating lamp; 903. an actuator.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-7, an embodiment of the present invention is shown: a high-speed construction elevator electric control system based on PLC control comprises a suspension cage 9 and a bottom cage electric box 6, wherein an illuminating lamp 902 is fixedly installed on one side inside the suspension cage 9, a heat dissipation fan 901 is fixedly installed on the top end inside the suspension cage 9, a driver 903 is fixedly installed on one side of the suspension cage 9, the driver 903 is formed by connecting three groups of motors in parallel, the output power of the motors is thirty-two kW, an electric control cabinet 1 is fixedly installed inside the suspension cage 9, hinges 101 are installed on the bottom end of one side of the electric control cabinet 1 at equal intervals, a cabinet door 102 is hinged to one side of each hinge 101, a first installation port 103 is fixedly arranged on the top end of the surface of the electric control cabinet 1, a second installation port 104 is fixedly arranged on the bottom of the first installation port 103, wiring holes 105 are arranged on the surface inside the electric control cabinet 1 at equal intervals, partition plates 106 are installed on the bottom end inside the electric control cabinet 1, and a frequency converter 5 is fixedly installed on the bottom end inside the electric control cabinet 1, an actuator 903 fixedly arranged on one side of a suspension cage 9 and a frequency converter 5 fixedly arranged at the bottom end inside an electric control cabinet 1, a QF0 control total power supply L71/L72/L73, a phase sequence protector JX is used for detecting a power supply phase sequence, signals are sent to a control assembly 4, KM2 is controlled by the control assembly 4, the frequency converter 5 is used for controlling the forward rotation, the reverse rotation and the acceleration of the actuator 903, T is used for converting 380V alternating current into 220V alternating current for braking, QF2 is used for controlling a transformer incoming line power supply, QF3 is used for controlling a transformer outgoing line power supply, a contact KM2, a contact KA5 and a contact KM3 are connected in series in a rectifier bridge control circuit and are used for controlling the opening and closing of the brake power supply, a fault output signal of the frequency converter 5 is transmitted to the control assembly by KA6, and the PLC correspondingly processes one frequency converter 5 and controls the actuators 903 connected in parallel by three groups of motors in an open loop mode of VF control by a multi-segment line VF control mode, utilize converter 5 control actuator 903, can increase the speed of construction elevator, make the efficiency that construction elevator can be under construction for high-rise building high, improve construction quality and progress.
A control component 2 is fixedly mounted at the top end in the electric control cabinet 1, the control component 2 comprises an eight-wire PLC controller 201, a first four-wire PLC controller 202 is fixedly arranged at one side of the bottom of the eight-wire PLC controller 201, a second four-wire PLC controller 203 is fixedly arranged at one side of the first four-wire PLC controller 202, a third four-wire PLC controller 204 is fixedly arranged at one side of the second four-wire PLC controller 203, a fourth four-wire PLC controller 205 is fixedly arranged at one side of the third four-wire PLC controller 204, a contact component 3 is fixedly mounted at the bottom of the control component 2, the contact component 3 comprises a main contactor 301, a safety contactor 302 is fixedly arranged at one side of the main contactor 301, a descending contactor 304 is fixedly arranged at one side of the safety contactor 302, a brake contactor 306 is fixedly arranged at the bottom of the descending contactor 304, and a high-speed contactor 305 is arranged at one side of the brake contactor 306, one side of a high-speed contactor 305 is fixedly provided with a lifting contactor 303, the bottom of a contact component 3 is fixedly provided with an anti-falling component 4, the anti-falling component 4 comprises a cage top cage inner conversion contactor 402, one side of the cage top cage inner conversion contactor 402 is fixedly provided with a conversion box 401, the other side of the cage top cage inner conversion contactor 402 is fixedly provided with an anti-falling box 403, the anti-falling component 4 fixedly arranged at the bottom of the contact component 3 and the bottom of the contact component 3 through the contact component 3 fixedly arranged at the bottom of a control component 2, an eight-wire PLC controller 201, a first four-wire PLC controller 202, a second four-wire PLC controller 203, a third four-wire PLC controller 204 and a fourth four-wire PLC controller 205 are responsible for program logic control and signal acquisition of each limit switch state, QF4 is a power breaker and is responsible for power supply of the on-off control component 2, SA0/SB1 is an emergency stop switch, and can also disconnect the power supply of the control component 4 under emergency, KA7 is a cage top cage interior changeover contactor 402, when a changeover box 401 is accessed, the changeover can be switched to a cage top operation mode, an eight-wire PLC controller 201 is a control unit host, and is provided with 8-way inputs I1-I8, 4-way outputs Q1-Q4, a first four-wire PLC controller 202, a second four-wire PLC controller 203, a third four-wire PLC controller 204, and a fourth four-wire PLC controller 205 are expansion modules of 4-way inputs I1-I4, 4-way output ports Q1-Q4, a well-defined communication interface is arranged between the modules and the host, wherein input ports of the eight-wire PLC controller 201 are used for detecting a deceleration limit ST3, a descent limit ST2, an ascent limit ST1, a safety catcher speed limit SL8, a top limit SL4, a safety window limit SL3, a rear threshold limit SL2, a front door limit SL1, a frequency conversion fault KA6, a phase sequence JX, a start button SA1/SA2, a cage top cage interior changeover contactor 402, an operation console contact signal S0, an operation console contact switch signal S1/S2, the output port is used for controlling signals of a cage top ascending button SB2, a cage top descending button SB3 and the like, and the input port is used for controlling the incoming line power supply contactor of the frequency converter 5, a safety contactor 302, an ascending contactor 303, a descending contactor 304, a high-speed contactor 305, a fault indication HL1, a safety indication HL, a brake contactor 306, the system is easy to program, simple and easy to understand, strong in configuration flexibility function expansibility, complete in input/output function modules, convenient to install and fast in operation speed by using an eight-wire PLC controller 201, a first four-wire PLC controller 202, a second four-wire PLC controller 203, a third four-wire PLC controller 204 and a fourth four-wire PLC controller 205, and is convenient for workers to install and use the electric control system, a breaker 7 is fixedly installed at the top end inside the bottom cage electric box 6, an alternating current contactor 8 is fixedly installed at the bottom end inside the bottom cage electric box 6, through the circuit breakers 7 equidistantly installed at the top end inside the bottom cage electric box 6 and the alternating current contactor 8 fixedly installed at the bottom end inside the bottom cage electric box 6, L1/L2/L3/N/PE is a power line connected into the bottom cage electric box of the construction hoist from a construction site electric box, L71/L72/L73/N/PE is a power line connected from the bottom cage electric box 6 to the hoist electric box, the bottom cage electric box comprises QF and QF1 and the alternating current contactor 8, wherein QF is responsible for switching on and off a main power supply of the hoist, QF1 is responsible for switching on and off a coil power supply of the alternating current contactor 8, SL is a limit switch installed on a bottom cage door and is connected in series in a loop for controlling a KM1 coil, when the bottom cage door is opened, the limit switch SL is disconnected, a KM1 coil loses electricity and contacts are disconnected, then a first circuit breaker 7 can be responsible for switching on and off a main power supply of the hoist, a second breaker 7 is responsible for switching on and off the coil power supply of the alternating current contactor 8, the bottom cage electric box 6 can facilitate the use of a hoist, and the upgrading of a worker is improved in construction.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a high-speed construction elevator electrical system based on PLC control, includes cage (9) and end cage electrical cabinet (6), its characterized in that: an electric control cabinet (1) is fixedly installed inside the suspension cage (9), a frequency converter (5) is fixedly installed at the bottom end inside the electric control cabinet (1), a control assembly (2) is fixedly installed at the top end inside the electric control cabinet (1), a contact assembly (3) is fixedly installed at the bottom of the control assembly (2), an anti-falling assembly (4) is fixedly installed at the bottom of the contact assembly (3), a circuit breaker (7) is fixedly installed at the top end inside the bottom cage electric box (6), and an alternating current contactor (8) is fixedly installed at the bottom end inside the bottom cage electric box (6);
the control assembly (2) comprises an eight-wire PLC controller (201), a first four-wire PLC controller (202) is fixedly arranged on one side of the bottom of the eight-wire PLC controller (201), a second four-wire PLC controller (203) is fixedly arranged on one side of the first four-wire PLC controller (202), a third four-wire PLC controller (204) is fixedly arranged on one side of the second four-wire PLC controller (203), and a fourth four-wire PLC controller (205) is fixedly arranged on one side of the third four-wire PLC controller (204);
the contact assembly (3) comprises a main contactor (301), a safety contactor (302) is fixedly arranged on one side of the main contactor (301), a descending contactor (304) is fixedly arranged on one side of the safety contactor (302), a brake contactor (306) is fixedly arranged at the bottom of the descending contactor (304), a high-speed contactor (305) is arranged on one side of the brake contactor (306) in a specified mode, and a lifting contactor (303) is fixedly arranged on one side of the high-speed contactor (305);
prevent weighing down subassembly (4) including cage top cage interior conversion contactor (402), one side of cage top cage interior conversion contactor (402) is fixed and is provided with conversion box (401), and cage top cage interior conversion contactor (402)'s opposite side is fixed and is provided with and prevents weighing down box (403).
2. The PLC-control-based high-speed construction elevator electric control system according to claim 1, characterized in that: hinge (101) are installed to the bottom equidistance of automatically controlled cabinet (1) one side, and articulated one side of hinge (101) installs cabinet door (102), the fixed first installing port (103) that is provided with in top on automatically controlled cabinet (1) surface, the fixed second installing port (104) that is provided with in bottom of first installing port (103), the inside surperficial equidistance of automatically controlled cabinet (1) is provided with wiring hole (105), baffle (106) are installed to the inside bottom equidistance of automatically controlled cabinet (1).
3. The PLC-control-based high-speed construction elevator electric control system according to claim 1, characterized in that: one side of the interior of the cage (9) is fixedly provided with an illuminating lamp (902), the top end of the interior of the cage (9) is fixedly provided with a heat dissipation fan (901), and one side of the cage (9) is fixedly provided with a driver (903).
4. The PLC-control-based high-speed construction elevator electric control system according to claim 3, characterized in that: the transmission device (903) is formed by connecting three groups of motors in parallel, and the output power of the motors is thirty-two kW.
5. The control method of the PLC-based high-speed construction elevator electric control system according to any one of claims 1-4, characterized in that: the method comprises the following steps:
s1, firstly, a driver (903) fixedly installed on one side of a suspension cage (9) and a frequency converter (5) fixedly installed at the bottom end inside an electric control cabinet (1) are used, one frequency converter (5) controls the drivers (903) connected with three groups of motors in parallel in an open-loop mode through a multi-section line VF control mode, the drivers (903) are controlled by the frequency converter (5), the speed of a construction elevator can be increased, the construction efficiency of the construction elevator for high-rise buildings is high, and the construction quality and progress are improved;
s2, secondly, when a conversion contactor (402) in a cage top cage is connected into a conversion box (401), the cage top cage can be switched to a cage top operation mode through a contact component (3) fixedly installed at the bottom of a control component (2) and an anti-falling component (4) fixedly installed at the bottom of the contact component (3), the eight-wire PLC controller (201), a first four-wire PLC controller (202), a second four-wire PLC controller (203), a third four-wire PLC controller (204) and a fourth four-wire PLC controller (205) are responsible for program logic control and signal acquisition of each limit switch state, and the eight-wire PLC controller (201), the first four-wire PLC controller (202), the second four-wire PLC controller (203), the third four-wire PLC controller (204) and the fourth four-wire PLC controller (205) are utilized to enable the system to be easy to program, simple and easy, strong in configuration and flexible expansibility, complete in input/output function modules, convenient to install and fast in operation, and convenient for workers to install and use the electric control system;
s3, finally, through the circuit breaker (7) of the inside top equidistance installation of end cage electric box (6) and the inside bottom fixed mounting' S of end cage electric box (6) ac contactor (8), first circuit breaker (7) can be responsible for break-make lift total power, second circuit breaker (7) are responsible for the coil power of break-make ac contactor (8), utilize end cage electric box (6) can make things convenient for the staff switch to use the construction elevator, the convenience of construction upgrading has been improved.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110350409.6A CN113003327B (en) | 2021-03-31 | 2021-03-31 | PLC (programmable logic controller) control-based high-speed construction elevator electric control system and control method thereof |
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| CN202110350409.6A CN113003327B (en) | 2021-03-31 | 2021-03-31 | PLC (programmable logic controller) control-based high-speed construction elevator electric control system and control method thereof |
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| CN113003327B true CN113003327B (en) | 2022-12-09 |
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| CN113003327A (en) | 2021-06-22 |
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