The Aquality transport stretcher is provided with a front and rear wheel retractable wheel frame system at the lower part of the main board 1 of the car body. The front wheel retractable wheel frame system is composed of the front wheel strut 15, the front wheel 16 and the main board 1;

　　When the Aquality transport stretcher gets on the car, when the front wheel strut 15 of the front wheel retractable wheel frame encounters the bottom plate of the ambulance car, squeeze the left control brake 3, release the front positioning pin 14, the front wheel 16 can be retracted, and It is supported by the front wheel bracket 11. During this process, the front part of the car body is supported by the front guide wheel 13, while the return spring 18 is stretched, the car body continues to move forward, and the right control brake 3 is squeezed to release the limit. Tongue 5, the rear wheel connecting rod 7 slides backward in the chute 4, the rear wheel 8 is retracted accordingly, and the boarding action is completed;

　　When the Aquality transport stretcher gets off, squeeze the right control brake 3, the rear wheel 8 falls down due to its own weight, the rear wheel link 7 slides forward in the chute 4, and passes through the special-shaped slider 6 of the link and the limit tongue 5 The interaction is locked, and then the front wheel 16 returns to the lowered position under the combined action of its own gravity and the return spring 18, and the disembarking action is completed.

　　The advantages of Aquality transport stretcher ambulance stretcher car: It can realize the functions of height adjustment and automatic leg retraction, guardrail lifting and wheel rotation, etc., which can meet the needs of the wounded and the hospital. It can automatically retract the legs when getting on the car, and adjust the height during the translation process, which saves valuable time and ensures the minimum number of occupants.