At present, the stretchers are medical device products without national standard and standard, which are produced by the manufacturer according to the relevant standards, and there are more products in the market. There are folding stretchers for different patients to sit up or down in the upper body, and stretch-type stretcher based on the patient's height. As a stretcher for the standard body size, the fire brigade is now equipped with a common stretcher, with a rectangular shape and a size of 2,000 mm x 600 mm. The first aid vehicle is equipped with a rectangular stretcher with standard number YZB/su0027-2008, with a size of 1,900 mm * 560 mm; Another is according to the human body measure the transformation of the stretcher, the stretcher is not only beneficial to enter the elevator, and at last need artificial carried down the stairs stretcher, but also to turn on the corner of the landing, the shapes and sizes are shown in figure 1. These three types of stretchers represent the longest stretcher for the critically wounded. The stretcher of these three kinds of specifications, again with the stretcher of the reconstruction hind is the most dexterous, the applicability of the small elevator is the strongest, to the injured degree different casualties have universality.

The regulation on the size of the fire elevator car is issued and implemented in the safety code for the manufacture and installation of fire fighting elevators. The safety code for the manufacture and installation of fire elevators was released on May 12, 2011, and has been implemented since April 1, 2012. This specification is number 5. 2. 3 rules: the size of the car and the rated load of the fire elevator should be given priority from GB/T7025. 1-2008 is selected, the capsules should not be less than 1, 350 mm x 400 mm (wide x deep, similarly hereinafter), rated load shall not be less than 800 kg, the net entry width of capsules should not be less than 800 mm, the reservation purposes including evacuation sites, in order to deliver a stretcher, beds, etc., or fire elevator design has two entrances, the rated load should not be less than 1, 000 kg, the minimum size of capsules should be designed as a rule of 1 100 mm * 100 mm. According to this regulation, if 1 100 mm x 2 100 mm car is selected, all three kinds of stretchers can be placed into the elevator along the side of the car. Thus, the fire elevator manufacturing and installation safety regulations for capsules size regulation, there is no guarantee that all kinds of fire elevator can meet the requirements of accommodate rescue critically ill patients horizontal stretcher.

Fire elevators are used by ordinary passengers in normal conditions, and their additional protection, control and signal functions are provided for the use of fire fighters in building fires. Therefore, in the selection of fire fighting elevators, in addition to the needs of fire fighting and rescue, we should also consider energy conservation and environmental protection, and the hall of waiting for elevators and the construction structure of the entrance and exit. And accordance with the requirements of the code for fire protection design of tall buildings, high-rise buildings more than two fire elevator should be set separately in different fire zone, fire elevator in the building of no more than three, and that the function of each fire elevator cannot replace each other, so each fire elevator all should have can hold horizontal stretcher function.