In order to cooperate with universities, colleges, junior colleges and special secondary schools, technical schools, vocational schools, employment training center, elevator maintenance property management department elevator related professional and industrial automation professional courses demonstration experiment, so that more people can better understand the elevator, elevator, train more professional elevator, to meet the needs of the development of elevator industry, our company through in-depth exploration and research, careful design of DT series of transparent simulation teaching elevator.
In order to facilitate teaching, most of the elevator components are made of transparent organic materials, the internal structure of the elevator at a glance; at the same time, elevator operation process, and each action are very clear, and can be repeated in practical operation. So that students can be very intuitive, thorough understanding of the structure of the elevator and its action principle, to achieve a multiplier effect. Solve the previous elevator teaching in the simple theory of teaching methods or to visit the actual elevator is not safe, can not fully understand its internal structure and operational process and other practical problems.
Elevator electrical control system uses imported SIEMENS's programmable logic controller (PLC) intelligent control, AC variable frequency drive, the composition and function of its hardware structure and the actual elevator is exactly the same. With automatic flat layer, automatically closed, Shun shout a ladder signals, go straight, elevator safety protection operation and elevator emergency stop, slow, slow down, lights, fans, and other functions to the response car inside and outside. It has the characteristics of reliable performance, stable operation, simple operation, low energy consumption and convenient teaching.
In addition, DT4 series of transparent simulation of the hardware and software of the elevator are using open structure, therefore, the institutions can also use this set of devices for the two development of the study. Such as the elevator. Elevator group control (unified scheduling multiple focus on the parallel); 2. Parallel (2-3 elevator control circuit of parallel elevator control, logic control, the station floor share outside call button); 3. Set selection elevator control; 4. Signal elevator control, and so on.
The Panasonic VF200 converter is a speed control device of three-phase AC traction motive. The device adopts voltage vector control mode, and the motor has the functions of acceleration and deceleration control, positive inversion control, point motion control and simulation input control. At the same time and break the original motive of phase, lack of phase, phase sequence disorder and over-voltage, under voltage, over current, overload, stall and protection function.
Using this set of equipment for supporting teaching, so that teachers and students to lift the structure, key components and electrical control, operation process of the elevator have intuitive, image understanding, easy to deepen of elevator related knowledge to understand and master. In addition, directly on the PC with ladder diagram programming, and on-site practical debugging, for students to learn, understand and master the programmable controller (PLC) and its application and industrial process automation control has a great help.
Logic control of the elevator system is completed by PLC (online), PLC is the of the company's CPU226, plus communication module, the output mode for the relay output. Through the host with RS422 or RS232 interface can realize PLC and PC communications, the use of GR FPWIN software, can be directly on the PC with ladder diagram programming, debugging, intuitive and easy to learn, easy beginners grasp; in addition also available Siemens programmer instruction programming, on-site commissioning.
Transparent simulation of the whole set of double teaching elevator equipment:
1, the main elevator model - including SIEMENS CPU226+EM223 programmable logic controller (PLC), the VF200 inverter
2, peripheral special communication cable;
3, SIEMENS PLC special programming tool software
4, teaching elevator instructions.
In addition, according to the specific requirements of the school special configuration, such as: computer, work station, etc..
Elevator basic structure:
The 1 part: the room comprises a traction traction motor, reducer, brake, traction wheel, speed limiter, rotary encoder.
2. A well part: including guide rail, a lifting mechanism, a car (door machine mechanism, safety gear, guide shoe, an illuminating lamp, a fan), door, floor call indicator controller, traction rope, a guide wheel, a layer of layer sensor (count reset), () limit switch, () limit switch, with cable, car controller, buffer, etc..
3. Electrical control part: power air switch (leakage tripping device), DC12V driving power supply, PLC programming controller, port wiring circuit board, the station clock.
Elevator car position detecting and electrical selection signal layer installed on top of the car and the station of the bistable magnetic switch, so as to get rid of the past by the relay and the contact switch with contact device control of complex circuit system, to optimize the line, enhances the reliability of the system greatly, and is convenient for maintenance.
Governor and safety clamp protection system.
When the accident, the car speeding or speed down (broken as a wire rope, car top pulley detachment, traction machine which is engaged with the worm wheel failure, motor speed down too high). At this time, governor will emergency braking, through safety cables and linkage, driven by action of a pair of safety tongs, the car card on the guide rail and can not fall down.
B. car, to reuse spring buffer device.
Buffer is the limit position of the elevator safety device, when the elevator due to failure, resulting in the car or of heavy Dun bottom or top (limit switch protection failure), car or on heavy bombardment spring buffer, buffer absorption by the elevator energy, so that the car or on safety deceleration to stop.
C. terminal limit switch safety protection system. A terminal limit switch is installed at the top of the elevator shaft and the bottom layer. When the elevator is out of control, the car has a top or bottom, and the terminal limit switch cut off the control circuit, which makes the car stop running.
D. door safety contact plate protection device. On the edge of the door of the car, a safety touch panel is provided. When the door in the closing process, contact safety contact plate and passengers or obstacles by safety contact plate connected with the connecting rod, touch is installed in the car door on the actions of the microswitch, make the door to open, to avoid accidents.
E. door machine torque safety protection device. Door machine with a certain torque at the same time to close the car door and the door of the hall. When an item or person is clamped in the door, the closing moment is increased, and the car door and the door of the door are automatically opened by the connected stroke switch to avoid the occurrence of accidents.
F, hall door automatic closing device. The elevator door is opened and closed, which is realized by the door blade which is installed on the door of the car. Each layer door is provided with a door lock. When the door is closed, the mechanical locking hook of the door lock is engaged, and the door and the door of the door are closed, and the elevator control circuit is switched on, and the elevator can start operation.
