hydraulic jack

hydraulic jack, Fluid Power Engineering (2151903)

1. Gandhinagar institute
of technology(012)
ALAALA
Subject :- FPE(2151903)
Topic name:- hydraulic jack
Prepared by :- jani Parth u. (150120119051)
guided by :-Prof. Dhruval V Patel
1

2. content
1. introduction
2. basic Principle
3. Working rule
4. Construction
5. function
6. example

3. 1.introduction
 Fluid system is defined as the device in which power is
transmitted with the help of fluid which may be liquid
or gas under pressure.
 Most of devices are based on principle of fluid static
and fluid kinematics.
 Hydraulic jack if one type of fluid system

4. 2.basic Principle
The basic principle of a
hydraulic jack may be
explained by the help of fig.
Consider a ram and plunger,
operating in two cylinders of
different diameters, which are
interconnected at the bottom,
through a chamber, which is
filled with some liquid.
It is based on Pascal’s law

5. 3.Working rule
When lever is working ,water is
contained in casing is forced out of
into the portion of the inverted
cylinder above ram. Due to
pressure, the upward force acts on
the inverted cylinder.
 The cylinder therefore moves up
and lifts load placed on the top of
casing.
 There is screw arrangement to
take water back from cylinder to
the casting and thus lower the
load when required.

6. 4.Construction
It consist of cylinder which is inverted and can move downward on ram which is
fixed with frame of jack as shown in fig.
Also consist one type of lever and it is connected with reciprocating pump.

7. 5.function
Hydraulic jack may be employed for the following jobs:
i.Metal press work (to press sheet metal to any required
shape).
ii.Drawing and pushing rods.
iii.Bending and straightening any metal piece .
iv.Packing press.
v.For lifting heavy load.

8. 6.Example of hydraulic jack