Design Idea of an Ambulance Stretcher
In order to ensure the stability requirements of the wounded during the rescue process, the principle of connecting rod organization is adopted, so that the stretcher has the function of adjusting the skew point of view, and the organization should automatically compensate for the change of the angle of the rescue stretcher bed . In addition, in order to improve the stability of the stretcher bed, the symmetry of the tissue size and mass distribution should be ensured as much as possible, including the geometrical symmetry and mass uniformity of the tissue along the direction of the rocking axis and the direction of the vertical rocking axis.
Based on this thinking, the following basic principles have been established in the construction of the mechanical structure of the stretcher bed:
Quality sharing criteria; small size guidelines; institutional good guidelines. The closed-loop reaction control principle is selected, and the control system is designed as a closed-loop reaction control system according to the criteria of “detection error and correction error”. Compared with the open-loop control system, although the closed-loop control system is relatively complex in structure, its anti-interference ability is strong. When the input calibration accuracy is common, the components and devices with low precision can be used to form a higher-precision control system. The controller can make the system satisfied with the requirements of various performance indicators.
Aiming at the problems of secondary damage and smoothness of the wounded in the rescue of the wounded, a detachable method for the rescue of the wounded and sick in the field, the corridor and other uneven terrain is proposed and designed. The white balance stretcher bed, through the system design, mechanical structure design, control system design and experimental research, verified the effectiveness of the technical method. After the research, the advantage of this stretcher bed is that the structure of the connecting rod including the electric push rod is selected to realize the simplification of the organization. The detachable overall structure is selected and the carrying case is designed to make the stretcher bed easy to carry and improve the rescue. effectiveness. The closed-loop reaction control principle was chosen, and the self-balancing control system was designed. The high-precision tilt sensor was used to detect the slanting point of the stretcher bed in real time. The high-performance ARM controller was used to control the electric push rod action, which satisfied the stable posture of the wounded and sick in the rescue and transportation process. Sexual requirements. Tests carried on the stairs proved that the balance of the stretcher bed is good.