CN202296628U

CN202296628U - Stepless speed regulation and control system of construction elevator

Info

Publication number: CN202296628U
Application number: CN 201120429473
Authority: CN
Inventors: 康会峰; 黄新春; 王晓光; 魏彩乔; 赵保亚; 曹玉超; 马超
Original assignee: North China Institute of Aerospace Engineering
Current assignee: North China Institute of Aerospace Engineering
Priority date: 2011-10-25
Filing date: 2011-10-25
Publication date: 2012-07-04
Anticipated expiration: 2021-10-25

Abstract

The utility model relates to the technical field of building and construction equipment and particularly relates to the stepless speed regulation and control system of a construction elevator, which comprises a frequency converter, a PLC controller and a single-chip microcomputer. The stepless speed regulation and control system of a construction elevator is characterized in that the frequency converter is connected with a motor M1, a motor M2 and a motor M3. The frequency converter is connected with the output terminal of a fuse correspondingly. The input terminal of the fuse is connected with the output terminal of an electrothermal relay correspondingly. The input terminal of the electrothermal relay is connected with a three-phase power supply. The frequency converter is connected with the PLC controller correspondingly. The PLC controller is connected with the single-chip microcomputer. The single-chip microcomputer is connected with an LED display through a driving chip. A sensor and an alarm bell are connected with the single-chip microcomputer. The frequency converter is controlled through the PLC controller, so that the stepless speed regulation of a construction elevator during the operation process can be realized. The elevator is ensured to be stable during the starting and stopping processes. Due to the adoption of the stepless speed regulation and control system, the problem that a construction elevator is impacted greatly during the starting process in the prior art is solved, while the speed of the elevator is adjustable. Therefore, the elevator can be operated at a high speed at higher floors and the operation efficiency of the elevator is improved. The stepless speed regulation and control system of a construction elevator is simple in structure and convenient to use.

Description

Construction elevator infinite speed variation control system

Technical field:

The utility model relates to the construction implement technical field, especially relates to a kind of construction elevator infinite speed variation control system.

Background technology:

In the prior art; The mode of relay control is adopted in the control of the elevator that uses in the high-building construction more; Its in use, rising or falling speed can't rationally be adjusted according to the weight of the material of slinging, because construction elevator necessary electromotor power is big; Construction elevator impacts bigger when going up and down, cause construction accident easily; Simultaneously because therefore the easy et out of order of work progress repeat circuit has influenced the normal operation of building operation.

Summary of the invention:

The present invention be directed to construction elevator of the prior art in shutdown process, impact big, can not speed governing etc. defective and a kind of construction elevator infinite speed variation control system is provided; The mode that it adopts PLC control frequency converter can effectively solve the problems of the prior art.

Described construction elevator infinite speed variation control system; It comprises frequency converter, PLC controller and micro controller system; Its characteristics are: described frequency converter links to each other with the three-phase input end of motor M 1, M2 and M3 respectively through U, V and the W pin on it; Corresponding the linking to each other of mouth of the L1 of frequency converter, L2 and L3 pin and fuse; The input end of fuse is corresponding with the mouth of thermal relay to link to each other, and the input end and the three phase mains of thermal relay join, and are provided with braking resistor R between the B+ pin of frequency converter and the B-pin; The L+ of frequency converter, DIN1, DIN2, DIN3, AIN+ and AIN-pin are respectively with L, Q0.0, Q0.1, Q0.2, the A+ of PLC controller with the A-interface is corresponding links to each other; The I0.0 of PLC controller, I0.1 and I0.2 interface join with button m1, m2 and m3 are corresponding respectively, and button m1, m2 and m3 and 24V power supply join, the com interface ground connection of PLC controller; The I0.3 of PLC controller, I0.4, I0.5 and I0.6 interface are respectively with upper limit position switch, lower position switch, door limit switch with anti-fall limit switch is corresponding links to each other; The I0.7 interface of PLC controller links to each other with the load end delivery port of relay, and the other end of upper limit position switch, lower position switch, door limit switch and anti-fall limit switch links to each other with the 24V power supply, and the load end input port of relay links to each other with the 24V power supply; Relay control end input port links to each other with the emitter of first aerotron; The collecting electrode of first aerotron links to each other with the 12V power supply, and the base stage of first aerotron links to each other with the ra0 pin of micro controller system, and the RC0 of micro controller system～RC7 pin is corresponding continuous with the input port of chip for driving; The output port of chip for driving is corresponding continuous with a～h port of light-emitting diode display; The rb0 of micro controller system, rb1, rb2 and rb3 pin are respectively with d1, d2, the d3 of light-emitting diode display with the d4 port is corresponding links to each other, and the rb4 of micro controller system, rb5, rb6 and rb7 pin link to each other with the end of switch k1, k2, k3 and k4 respectively, and the other end of switch k1, k2, k3 and k4 is respectively through resistance R 1, R2, R3 and R4 ground connection; The VCC of micro controller system, RA0 and GND pin are respectively with a, the b of sensor with the c pin is corresponding links to each other; The GND pin of micro controller system links to each other with the control end delivery port of relay, and the ra1 pin of micro controller system links to each other with the base stage of second aerotron through resistance R 5, and the collecting electrode of second aerotron links to each other with the VCC pin of micro controller system; The emitter of second aerotron alarm bell one end of being informed of a case, emergency alarm bell other end ground connection.

Described chip for driving model is ULN2003, and described light-emitting diode display is 8 light-emitting diode displays.

The beneficial effect of the utility model is: described construction elevator infinite speed variation control system; It realizes the infinite speed variation of construction elevator in operational process through PLC control frequency converter; Guaranteed elevator in shutdown process steadily, solved that construction elevator starts the bigger problem of impacting in the existing technology, simultaneously because adjustable-speed; Make and when floor is higher, adopt high-speed cruising, improved the operating efficiency of elevator.It is simple in structure, easy to use.

Description of drawings

Fig. 1 is a structure principle chart of the present invention;

Shown in the figure: 1, sensor, 2, micro controller system, 3, light-emitting diode display; 4, chip for driving, 5, relay, 6, the PLC controller; 7, frequency converter, 8, motor, 9, thermal relay, 10, first aerotron, 11, second aerotron, 12, emergency alarm bell, 13, fuse.

The specific embodiment

Do further to detail below in conjunction with the most preferred embodiment shown in the accompanying drawing

Like Fig. 1; Described construction elevator infinite speed variation control system; It comprises frequency converter 7, PLC controller 6 and micro controller system 2; Its characteristics are: described frequency converter 7 links to each other with the three-phase input end of M1, M2 and the M3 of motor 8 respectively through U, V and W pin on it, and corresponding the linking to each other of mouth of the L1 of frequency converter 7, L2 and L3 pin and fuse 13, the input end of fuse 13 is corresponding continuous with the mouth of thermal relay 9; The input end and the three phase mains of thermal relay 9 join; Be provided with braking resistor R between the B+ pin of frequency converter 7 and the B-pin, the L+ of frequency converter 7, DIN1, DIN2, DIN3, AIN+ and AIN-pin are respectively with L, Q0.0, Q0.1, Q0.2, the A+ of PLC controller 6 with the A-interface is corresponding links to each other, and the I0.0 of PLC controller 6, I0.1 and I0.2 interface join with button m1, m2 and m3 are corresponding respectively; Button m1, m2 and m3 and 24V power supply join; The com interface ground connection of PLC controller 6, the I0.3 of PLC controller 6, I0.4, I0.5 and I0.6 interface are respectively with upper limit position switch, lower position switch, door limit switch with anti-fall limit switch is corresponding links to each other, and the I0.7 interface of PLC controller 6 links to each other with the load end delivery port of relay 5; The other end of upper limit position switch, lower position switch, door limit switch and anti-fall limit switch links to each other with the 24V power supply; The load end input port of relay 5 links to each other with the 24V power supply, and relay 5 control end input ports link to each other with the emitter of first aerotron 10, and the collecting electrode of first aerotron 10 links to each other with the 12V power supply; The base stage of first aerotron 10 links to each other with the ra0 pin of micro controller system 2; The input port of the RC0 of micro controller system 2～RC7 pin and chip for driving 4 is corresponding to link to each other, and the output port of chip for driving 4 is corresponding continuous with a～h port of light-emitting diode display 3, and the rb0 of micro controller system 2, rb1, rb2 and rb3 pin are respectively with d1, d2, the d3 of light-emitting diode display 3 with the d4 port is corresponding links to each other; The rb4 of micro controller system 2, rb5, rb6 and rb7 pin link to each other with the end of switch k1, k2, k3 and k4 respectively; The other end of switch k1, k2, k3 and k4 is respectively through resistance R 1, R2, R3 and R4 ground connection, and the VCC of micro controller system 2, RA0 and GND pin are respectively at corresponding the linking to each other of a, b and c pin of sensor 1, and the GND pin of micro controller system 2 links to each other with the control end delivery port of relay 5; The ra1 pin of micro controller system 2 links to each other with the base stage of second aerotron 11 through resistance R 5; The VCC pin of the collecting electrode of second aerotron 11 and micro controller system 2 joins, the emitter of second aerotron 11 alarm bell one end of being informed of a case, emergency alarm bell 12 other end ground connection.

Described chip for driving 4 models are ULN2003, and described light-emitting diode display 3 is 8 light-emitting diode displays.

Described construction elevator continuous speed regulation system during use, links to each other each unit module; Can realize the rising of construction elevator by the m1 button, can realize the decline of construction elevator can realizing stopping of construction elevator by the m3 button by the m2 button; Can realize the emergency braking of elevator in addition by scram button, in the process that elevator rises or descends from propradation to the decline state, or need be by behind the m3 from the decline state to propradation; After stopping, can realizing in elevator the rising or the decline of elevator by m1 or m2 button; In operational process, sensor is used for gathering construction companion ladder car weight information, micro controller system through ra0 with sensor acquisition to analog signal conversion become digital signal; Calculate the back by micro controller system and confirm the companion ladder car weight; Critical weight compares in the micro controller system with being set in advance, and is if surpass this gravimetric value then start alarm equipment alarm, out of service through PLC control motor simultaneously.

Claims

1. construction elevator infinite speed variation control system; It comprises frequency converter, PLC controller and micro controller system; It is characterized in that: described frequency converter links to each other with the three-phase input end of motor M 1, M2 and M3 respectively through U, V and the W pin on it; Corresponding the linking to each other of mouth of the L1 of frequency converter, L2 and L3 pin and fuse; The input end of fuse is corresponding with the mouth of thermal relay to link to each other, and the input end and the three phase mains of thermal relay join, and are provided with braking resistor R between the B+ pin of frequency converter and the B-pin; The L+ of frequency converter, DIN1, DIN2, DIN3, AIN+ and AIN-pin are respectively at corresponding the linking to each other of L, Q0.0, Q0.1, Q0.2, A+ and A-interface of PLC controller; The I0.0 of PLC controller, I0.1 and I0.2 interface join with button m1, m2 and m3 are corresponding respectively, and button m1, m2 and m3 and 24V power supply join, the com interface ground connection of PLC controller; The I0.3 of PLC controller, I0.4, I0.5 and I0.6 interface are respectively with upper limit position switch, lower position switch, door limit switch with anti-fall limit switch is corresponding links to each other; The I0.7 interface of PLC controller links to each other with the load end delivery port of relay, and the other end of upper limit position switch, lower position switch, door limit switch and anti-fall limit switch links to each other with the 24V power supply, and the load end input port of relay links to each other with the 24V power supply; Relay control end input port links to each other with the emitter of first aerotron; The collecting electrode of first aerotron links to each other with the 12V power supply, and the base stage of first aerotron links to each other with the ra0 pin of micro controller system, and the RC0 of micro controller system～RC7 pin is corresponding continuous with the input port of chip for driving; The output port of chip for driving is corresponding continuous with a～h port of light-emitting diode display; The rb0 of micro controller system, rb1, rb2 and rb3 pin are respectively with d1, d2, the d3 of light-emitting diode display with the d4 port is corresponding links to each other, and the rb4 of micro controller system, rb5, rb6 and rb7 pin link to each other with the end of switch k1, k2, k3 and k4 respectively, and the other end of switch k1, k2, k3 and k4 is respectively through resistance R 1, R2, R3 and R4 ground connection; The VCC of micro controller system, RA0 and GND pin are respectively with a, the b of sensor with the c pin is corresponding links to each other; The GND pin of micro controller system links to each other with the control end delivery port of relay, and the ra1 pin of micro controller system links to each other with the base stage of second aerotron through resistance R 5, and the collecting electrode of second aerotron links to each other with the VCC pin of micro controller system; The emitter of second aerotron alarm bell one end of being informed of a case, emergency alarm bell other end ground connection.

2. construction elevator infinite speed variation control system according to claim 1 is characterized in that: described chip for driving model is ULN2003.

3. construction elevator infinite speed variation control system according to claim 1 is characterized in that: described light-emitting diode display is 8 light-emitting diode displays.