Bicycle ambulance
Practical Action
3.4 Lower frame
Lower frame is the lower part of bicycle
ambulance. As shown in the diagram,
according to the need, a frame is
prepared by welding the mild steel. On
the both side of the frame, a wheel is
placed and is tightened using a knot bolt.
A shock absorber is placed in the middle
of upper and lower frame. This helps to
have a comfortable ride for the patients
when the bicycle ambulance is operated
at speed. This equipment is joined by a
hinge and along with it upper and lower
frame is also joined hinge. The upper
part of hinge is joined into upper frame
by welding it.
3.5 Ball joint
Ball joint is joined by welding in the clamp plate of carrier of
the cycle bicycle whereas the lower part of the cylinder of 40
mm radius is joined by welding it to the upper part o the
clamping plate. A ball of 35 mm radius is kept inside this
cylinder. This ball has the ability to easily rotate inside the
cylinder, thus changing the direction of the trailer along with
the change in the direction of the cycle which helps in having
a comfortable ride to the patient. This provides a movable joint
between the cycle and the trailer making the ride smoother.
3.6 Shock Absorber
This part of the cycle reduces the shock that is
generated by speeding up the ambulance and makes the
journey comfortable enough for the patients. While
travelling in the difficult, gravelled and trail roads, the
spring attached to the shock absorber contracts and
reduces the generated shock. The upper part of the
shock absorber is welded to the centre part of the frame
with the help of a knot bolt of 12 mm radius and a bus
of 28 mm length. The lower part is joined to the square
pipe of the lower part of frame using a knot bolt brush.
The required elements for shock absorber as mentioned
below:
Bus (28 mm length, 25 mm radius)
Hinge
Knot bolt (14 mm radius, 60 mm length)
Spring
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