Medical Appendix CC. 2 Strength and Durability Testing Machine

The diameter of the impactor body is approximately 200mm, and it is separated from the impact surface by a spiral compression spring. The impactor body can move freely on a line perpendicular to the plane of the center area of the impact surface. The total mass of the components should be 25kg ± 0.1kg, and the mass of the body and its related components (excluding springs) should be 17 kg ± 0.1kg.

The combined spring coefficient (for this system) should be 6.9N/mm ± 1N/mm, and the total frictional resistance of the moving parts should be between 0.25N and 0.45N. When the spring system is compressed to a load of 1040N ± 5N, the remaining compression distance should be at least 60mm.

The impact surface should be a rigid circular object with a diameter of 200mm ± 5mm, having a convex spherical curvature radius of 300mm on its surface and a leading edge radius of 12mm.

Force range: 0-2000N can be set

Using a stepper motor to drive the screw lifting mechanism for pressurization, sustainable or cyclic loading

Frequency: 6-15 times/min adjustable

Loading speed: 0.01-20mm/s can be set

Medical bed comprehensive testing machineMain technical parameters

1. Adopting fully automatic program control, the operation is simple and convenient. Electric loading force value, displayed on the touch screen through a force sensor;

2. Test range 100-500MM;

3. Testing station: 1 station;

4. Test speed: 0-500MM/min can be set;

5. Power supply: 220V, 1kw

6. Test force load: 5000N

7. Equipment dimensions: approximately 240 * 150 * 230CM in length, width, and height

Stability test, for the test load of casters and/or sidebars, set in harsh conditions under normal use, and conduct the following tests to confirm whether they will overturn. However, do not use a mattress during the experiment.

a) Lateral stability test:Measure the width of 250mm from the outer end of the mattress support platform, with 125mm as the center, and apply a load of 2250N to one end of the horizontal mattress support platform (refer to Figures 8 and 9)

b) Longitudinal stability test