Detailed Explanation of Elevator Car System

The Elevator car system is the core part of the elevator, mainly used to carry and transport people and materials. It consists of multiple key components, including the car bottom, car wall, car top, car door, etc., which together constitute the elevator's carrying space.

The design of the car-type elevator space environment must be centered on meeting the passengers' functional needs for the elevator; the design of the car-type elevator space environment must follow the general rules of indoor and outdoor space environment design, the design style must be coordinated with the design style of the building space, and the space environment must be integrated with the surrounding environment; the design of the car-type elevator space environment must always grasp the theme of "people-oriented", and at the same time, boldly break through the constraints to create a healthy and comfortable elevator environment.

The main components of the car and their functions:

●The car frame

(car frame) is the load-bearing structure of the car, and the load (self-weight and load) of the car is transmitted to the traction wire rope by it. When the safety clamp is activated or squats and hits the buffer, it must also withstand the resulting reaction force, so the car frame must have sufficient strength.

The car frame is generally composed of upper beams, columns, bottom beams and tie bars (to adjust the level of the car floor and prevent the floor from tilting).

●Car body

It is a closed enclosure that forms the car space. Except for the necessary entrances and exits and ventilation holes, there shall be no other openings (a few countries require safety windows on the car roof). The car body is made of non-flammable materials that do not produce harmful gases and smoke. For the safety and comfort of passengers, the net height of the car entrance and interior shall not be less than 2 meters. To prevent overloading due to too many passengers, the effective area of ​​the car must be limited. For details, please refer to the corresponding provisions of GB7588-2003 on the rated load and the maximum effective area of the car. In order to ensure that there is no excessive crowding in passenger elevators, the standard also stipulates the minimum effective area of the car.

The car body is generally composed of the car platform (car platform), car walls (car enclosures; car walls), and car roof (car roof).

●Devices inside the car

Generally, there are control boxes (control devices inside the car), ventilation devices, lighting, emergency lighting for power outages, alarms and communication devices.

●Weighing devices

Generally, they are installed on the bottom of the car, and a few are installed on the upper beam or rope head plate on the top of the car. The basic structure is to install several micro switches (contacts) or weight sensors on the bottom beam. When the active car placed on the elastic rubber pad moves downward due to the increase in load, the micro switch is triggered to send a signal, or the sensor sends a continuous signal corresponding to the load.

The most basic switch is activated when overloaded (exceeding the rated load by 10%), so that the elevator door cannot be closed and the elevator cannot be started, and sound and light signals are issued at the same time (some have no light signals). Therefore, it is also called an overload switch.