2. Group Member Name
Omar Faruq Roney ID: 15107092
Md. Al Amin Hossain ID: 15107105
Md. Reazul Islam
Md. Saiful Islam ID: 15107096
Md. Sabbir Reza Khan
34. 1.TRUCK MOUNTED CRANE
Specifications:-
Lifting capacity: 20 to 30 tones.
Working Radius: 15m to 20m.
Use:
Motor vehicle rolling stock.
Construction and repair work.
B) Mobile or Movable crane
43. Content of the presentation
1.Definitation of the pump
2.History of the pumps
3.Types of pumps
4.Figure of the different types of pumps
5. Different between types of pumps
6.Application of the pumps
44. Pump
What is pumps:
A pump is a device that moves fluids
(liquids or gases),from one to another,by mechanical
action.
45. History of Pump
Ten years ago, World Pumps put
together a brief history of the pump
industry telling the story of pump
development since the Egyptians
invented the ‘shadoof’ in 200BC. We
stopped then at 1999, but here we bring
the story right up to date with some of
the main industry events of recent times
51. Application of Centrifugal Pumps:
Common uses include water, sewage, petroleum and
petrochemical pumping; a centrifugal fan is commonly
used to implement a vacuum cleaner. The reverse
function of the centrifugal pump is a water turbine
converting potential energy of water pressure into
mechanical rotational energy.
52. Definition of Positive displacement Pump:
A positive displacement pump makes a fluid move by
trapping a fixed amount and forcing (displacing) that
trapped volume into the discharge pipe. Some positive
displacement pumps use an expanding cavity on the
suction side and a decreasing cavity on the discharge
side
59. Classification of Breaks
Method of actuation
a) Foot brake
b) Hand brake
Mode of operation
a) Mechanical brakes
b) Hydraulic brakes
c) Air brakes
d) Vaccum brakes
e) Electric brakes
60. Basis on action
a) Front-wheel brakes
b) Rear-wheel brakes
Breaking contact
a) Internally-expanding brakes
b) Externally-contracting brakes
71. BRAKE SHOES
Two pieces of sheet steel welded together
Web to the linking table and brake linking
Holes,slots for return springs
72.
73. BREAK DRUM
Made by cast iron
Friction heat can reach 316 C
The break drum must be:
a) Accurately balanced
b) Sufficiently rigid
c) Resistant against wear
d) Highly head-conductive
e) Lightweight
74.
75. BREAK FLUID
I. Transfer force into pressure
II. Subjected to very high temperature
III. Must have high boiling point
Viscosity
i. Extreme cold
ii. Important in ABS
76.
77. Advantages of hydraulic brakes
Equal braking action on all wheels
Increased braking force
Simple in construction
Low wear rate of brake linings
Flexibility of brake linings
Increased mechanical advantage
78. Disadvantages
Whole braking system fails due to
leakage of fluid from brake linings
Presence of air inside the tubings
ruins the whole system
80. WHAT IS HYDRAULIC LIFT?
Hydraulic lift is a device used for carrying
passenger or goods from one floor to another in
heavy objects.
81.
82. Pascal's law is a principle in fluid mechanics that
states that pressure exerted anywhere in a confined
incompressible fluid is transmitted equally in all
directions throughout the fluid such that the pressure
variations (initial differences) remain the same.
This law is applied to lifts.
83. TYPES OF HYDRAULIC LIFTS
TYPES
DIRECT ACTING
HYDRAULIC
LIFT
SUSPENDED
HYDRAULIC
LIFT
84. DIRECT ACTING HYDRAULIC LIFT
When fluid under pressure is forced into the cylinder, the
ram gets a push upward. The platform carries loads or
passengers and moves between the guides.
In direct acting hydraulic lift, stroke of the ram is equal to
the lift of the cage.
85. CONSTRUCTION DETAILS
Components of direct acting
hydraulic lift:
Fixed cylinder: It is fixed with the wall
of the floor, where the sliding ram
reciprocate when we apply the
pressure.
Cage: It is fitted on the top of the
sliding ram where the load is placed
(i.e. lifted load).
Sliding ram: It is fitted in the fixed
cylinder which is reciprocate (upward
or downward direction) when we
applied the pressure (i.e. reaches the
floor wise.)
86. SUSPENDED HYDRAULIC LIFT
WORKING :-
When fluid under pressure is forced into the cylinder,
the ram gets reciprocate to the movable pulleys.
Working period of the lift is ratio of the height of lift to
the velocity of lift.
Idle period of lift is the difference of the total time for
one operation and the working period of the lift.
88. MODERN INNOVATIONS
Now days the speed of hydraulic lifts has been
increased enormously.
By using working oils in hydraulic actuators while
energy recovering operation is performed by the
hydraulic lift device, occurrence of pressure pulsation
in the working oil can be prevented, and energy
recovering efficiency is increased.