Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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The adjustable height caster is designed to carry 2000 N and operate on the floor that may not be flat.
The spring must give sufficient force to keep the wheel touching the floor.
A bolt M8x1 is used to adjust the height of the caster. Find the minimum number of thread (t) on nut that made of steel having tensile strenght of 400 MPa considering the factor of safety is 3.
F spring
Number of thread t =
To select a suitable spring from catalog, you need to find the spring rate (spring constant) providing that the free lenght of the spring is 40 mm and the spring will be assembled around the bolt.
Compression spring specification can be found in CSC spring catalog on page 12-228)
Transcribed Image Text:The adjustable height caster is designed to carry 2000 N and operate on the floor that may not be flat.
The spring must give sufficient force to keep the wheel touching the floor.
A bolt M8x1 is used to adjust the height of the caster. Find the minimum number of thread (t) on nut
that made of steel having tensile strenght of 400 MPa considering the factor of safety is 3.
F
spring
Number of
thread t ?.
To select a suitable spring from catalog, you need to find the spring rate (spring constant) providing that
the free lenght of the spring is 40 mm and the spring will be assembled around the bolt.
W
Fspring
32
B
AB=40mm
BC=55mm
ABC= 990
D
Rp
(Compression spring specification can be found in CSC spring catalog on page 12-228)
150
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