Slim type is suitable for occasions where the passenger flow is not too large and space saving is needed, and heavy weight is suitable for public transportation with large passenger flow. Control functions such as car door entrance protection (such as light curtain protection), automatic re-opening of the door, summoning the re-opening of the door downwards, and forced closing of the door at that time also have a certain effect on the total opening and closing time of the door. If the door does not touch the passengers (such as with a reliable three-dimensional light curtain protection) I think a faster closing speed can be used.
There are also special-purpose elevators such as: explosion-proof Elevators, cold storage elevators, home elevators, disabled elevators, mine elevators, power station elevators, fire elevators, etc. The selection of acceleration and deceleration should refer to the rated speed. Generally, the time for opening and closing the door of the two split doors is shorter than that of the two side opening doors, but the side opening doors can make the door opening width wider because the door leaves occupy less the width of the hoistway and the car. (3)
The rate of change of acceleration and deceleration is an important factor affecting comfort, and its value should not be greater than 2. It is often used in elevators with gearless speeds above 2.2 of GB7588-1995 stipulates the relationship between the rated load and the maximum effective area of the car. DC elevators have the advantages of good speed regulation performance and large speed range, but they require DC power and motor maintenance.
The wheelchair elevator ceilings has several adjacent steps that can be linked to form a platform that supports the wheelchair. Once the obstacle is removed, the door is closed again, thereby saving the total time for opening and closing the door. The car of the oblique elevator runs along the guide rail in the inclined hoistway. At present, the frequency conversion door machine and DC door machine are mainly used, and steel wire rope or toothed belt Transmission, so as to obtain a good curve curve of door opening and closing, and safe, reliable and low noise.45) H (the lower limit is taken at low speed and the upper limit is taken at high speed).
villawallad