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DESIGN OF HYDRAULIC JACK & ANALYSIS

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Mohammed Salahuddin

A jack is a device that uses force to lift heavy loads. The primary mechanism with which force is applied varies, depending on the specific type of jack, but is typically a screw thread or a hydraulic cylinder. Jacks can be categorized based on the type of force they employ: mechanical or hydraulic. Mechanical jacks, such as car jacks and house jacks, lift heavy equipmentand are rated based on lifting capacity (for example, the number of tons they can lift). Hydraulic jacktend to be stronger and can lift heavier loads higher, and include bottle jacks and floor jacks. HYDRAULIC JACKSdepend on force generated by pressure. Essentially, if two cylinders (a large and a small one) are connected and force is applied to one cylinder, equal pressure is generated in both cylinders. However, because one cylinder has a larger area, the force the larger cylinder produces will be higher, although the pressure in the two cylinders will remain the same. Hydraulic jacks depend on this basic principle to lift heavy loads: they use pump plungers to move oil through two cylinders. The plunger is first drawn back, which opens the suction valve ball within and draws oil into the pump chamber. As the plunger is pushed forward, the oil moves through an external discharge check valve into the cylinder chamber, and the suction valve closes, which results in pressure building within the cylinder. I. THEORY HYDRAULICS:The word hydraulics is based on the Greek word for water, and originally covered the study of the physical behavior of water at rest and in motion. Use has broadened its meaning to include the behavior of all liquids, although it is primarily concerned with the motion of liquids. Hydraulics includes the manner in which liquids act in tanks and pipes, deals with their properties, and explores ways to take advantage of these properties. Although the modern development of hydraulics is comparatively recent, the ancients were familiar with many hydraulic principles and their applications. The Egyptians and the ancient people of Persia, India, and China conveyed water along channels for irrigation and domestic purposes, using dams and sluice gates to control the flow. The ancient Cretans had an elaborate plumbing system. Archimedes studied the laws of floating and submerged bodies. The Romans constructed aqueducts to carry water to their cities. Torricelli, French physicist, EdmeMariotte, and later, Daniel Bernoulli conducted experiments to study the elements of force in the discharge of water through small openings in the sides of tanks and through short pipes. During the same period, Blasé Pascal, a French scientist, discovered the fundamental law for the science of hydraulics. Hydraulic jack is based on the Pascal's law whichstates that increase in pressure on the surface of a confined fluid is transmitted undiminished throughout the confined vessel or system. Two common types of hydraulic jacks includeBOTTLE JACKS & FLOOR JACKS..

cherkos welegebrial

Bipin Joshi

bhuvan venkat chowdary Bikkina

salim marchant

International Journal for Research in Applied Science & Engineering Technology (IJRASET)

IJRASET Publication

This paper is about the new automatic technique of inbuilt hydraulic jack system. Whenever the tire failure is occurred in the vehicle then to lifting the vehicle from ground surface is the very difficult think for human being and also, huge human effort required and more time taking process. There, this inbuilt hydraulic jack system helps to lift the vehicle from the ground instead of conventional mechanical jack, and saves the time and excess effort. Separate buttons are provided in order to raise or lower the right and left side jacks. By pushing the given button in the dashboard, the inbuilt self-jacking component gets initiated. Main parts of this project are hydraulic jack, master cylinder, valves, manifold, and oil reservoir. The inbuilt hydraulic jack will be valuable to the senior residents and for women who discover it incredibly hard to work the jack physically in any breakdown of the vehicle. This hydraulic jack will have the option to lift the wheels as indicated by our prerequisite that is on the off chance that we need to lift just two wheels, at that point it tends to be finished by moving the cylinder as needs be on the rack with the assistance of the DC motor.

IOSR Journals publish within 3 days

A jack is a mechanical lifting device used to apply great forces or lift heavy loads. A mechanical jack employs a screw thread for lifting heavy equipment. A hydraulic jack uses hydraulic power. In the case of tyre puncture or replacing wheels lift the car is more important part. This time we use traditional ways to lift the tyre. In that case a physically handicapped person, older person aged person not lifts the tyre easily. They require more time and also require more force to lift the tyre. In that way to help those who are physically challenged, aged person this project automatic hydraulic jack system is more useful. So, we tried to grab the opportunity. Here we use a wiper motor to drive the hydraulic jack loading subsequently and automatically.

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Action research : the effect of different sized syringes and pistons

Africa teen geeks video, baseline test, camscanner 05-23-2021 14.04, grade 9 powerpoint presentation : hydraulic jack, grade 9 summary notes, https://www.liveworksheets.com/3-pk174998fn, https://youtu.be/ep8-k3i7hly.

Label The Jack

Mini-pat project, narrated powerpoint slideshare.

Soft Copy Project Details

Submission link, teams meeting, technology 9th grade.

In this unit, you will learn how some small, human-powered mechanical devices work. You will see that tools as simple as a pair of scissors function on the same principles as massive equipment powered by fluid pressure and heat engines. You will discover the main factors in the efficient operation of mechanical systems. You will also design and build your own mechanical devices — including some powered by hydraulics and pneumatics — and investigate their efficiency. Finally, this unit examines how machines have changed as science and technology have changed.

Session 1 : Introduction to Mechanical Engineering

Click Welcome Video to understand how to navigate through the five sessions on   using OER Commons

Now that you're geared up , let's fly through session 1:  Session details  Session requirements Unit 1: Pneumatics and Hydraulic System Powerpoint tutorials Hours: 2 Hours Interactive topic assessment Free Unlimited access  

LESSON OBJECTIVES

By the end of the session you will know  what is a mechanism , what comprises a mechanism and what are hydraulics and pnuematic systems . During the session you will be able to complete an Action Research on two syringes acting on forces.

Now, check your prior knowledge: 

1. Take a look at the video tutorial   as an introduction 

'Click'  Hydraulic and Pneumatics which will take you to Narrated PowerPoint .

2. Check your understanding by taking an 'online interactive test '  to gauge your level of understanding. Follow the link for the baseline on Mechanical Technology  

3. Watch the Youtube video as reinforcement. After watching this video, you should have both concrete and abstract knowledge. 

                                                                                                                                                                                  Next

Session 2 : Pascal's law and Force Multiplication

Welcome to Session 2 , this unit we deal with Pascal's law and Force Multiplication

Learning Objectives: By the end of the unit you should have an understanding between what pascal law says about hyudraulic in terms of mechanical advantage and force multiplication . Under 'resources' you will find an activity which extends on mechanical advantage and calculations. Learning Task : 1. Read through the notes.                                 2. Complete Activity 2 and submit the answers under google drive link attached                              INFORMALASSESSMENT  https://drive.google.com/drive/folders/1QxcoS92wGG3LfnhxLmQN5E9OiE-AX6Xa?usp=sharing                                3. Complete the readings on attached resources  'Shuter Top Class Technology learners  book page 40-42'

Figure 1.1: Hydraulic system with liquid in a confined space 

Previous                                                                                                                                                              Next 

Session 3 : Hydraulic Press

Welcome to session 3! This lesson will be a sychronous lesson. Follow the link to attend the web conference.  

                                                              HYDRAULIC PRESS

The Hydraulic Press has a bed or a plate in which a metal is placed s that it can be crushed, straightedned or moulded. The concept of the hydraulic press is based on the Pascal's Theory that when the preszsure is applied on the fluids in an enclosed system , the pressure thoughout the system always remails constant.  In other words, the hydraulic press is a machine that makes use of the presssure exerted on the fluids to crush something.

 Click on the goggle classroom discussion ---->  Discussions   to post a response to the following question which serves as baseline informal gauging tool  Requirements :  Post a response about 'Do you think the way  hydraulic press uses force to crush, straighten or moulds metals by making use of exerted force on liquid  is an environmentall friendly method and why ?'   Your response should not be more than 100 words   Comment of one of your peers rsponses.DO NOT REPEAT WHAT HAS BEEN SAID

                          TEAMS TIME :  FOLLOW THE LINK TO JOIN NOW !

Web Conference link 1 hour session which will discuss how 1. What is a hydraulic Press 2. How Hydraulic Press systems work 3. Popular uses of hydraulic Press

What was your takeaway from the Live session ? Think about this for 3 Minutes

Deadline :    O3 June 2021 Complete Activity 2: Hydraulic Press Calculations  Instruction : Work out answers to the following problems presented . Click on my copy of the questions under resources  and post this under the Google drive link for Informal Activities. Enusre that you write your Name and Surname as your file name.

            Previous                                                                                                                                              Next 

Session 4 : Hydraulic Jack

Welcome to this session, we will work through the Hydraulic Jack. 

By the end of the lesson , you will be able to , 

1. Investigate the design considerations of a hydraulic jack. 2. Label a Hydraulic Jack 

Follow the link which will take you straight to the PowerPoint Presentation for the session :

https://docs.google.com/presentation/d/1v3RUFUcAlqR0YFtcnHTMEF2MnxpfWnCTuPXJ5V6XDos/edit?usp=sharing

Copy this Activity onto your account profile and use it as reference when you do the Summary Test for the next sessions.

Activity 3: System diagram for a Hydraulic Jack 

1. Draw a systems diagram which describes the way a hydraulic jack works.

2. Explain how the system for a hydraulic jack works.

3. Label the hydraulic Jack .

    Video Tutorial   Click  Video Tutorial to access the lesson offered by Africa Teen Geeks.   As a summary to this session, watch the video which highlights on the design considerations of the hydraulic jack .  After, w atching the video, ask yourself these questions as reinforcement learning.    Who will use the Jack?  What is it for?  What should it be made of ?  Is it cost effective ?                                                                                    Previous                                                                                                                                                                      Next

Session 5: Formal Assessment Task [Mini-Pat]

Session 5 : design an intergrated system.

Welcome to Session 5 ,  In this session we summarise the four above session by completing a MINI-PAT.

What is a Mini-PAT 

The  mini - PAT  is a peer assessment tool, a form of multi-source feedback or 360° assessment. It provides. feedback on an individual's professional performance, skills, attitude and behaviour.

Topic : Intergrated System-Mechanical/Electrical

Context: Designing a compound mechanical system

Content : Systems where mechanical, hydraulic or pneumatic systeems are combined to give mechanical advantage . 

Watch the following video which will guide you in completing this Practical Task.

https://youtu.be/P2r9U4wkjcc

Summary Notes to help you designing and using different mechanisms.

Systems and Mechanical Notes 

DESIGN A COMPOUND LIFTING MACHINE  Moving SA, a new moving company that moves indisturial equipment and household objects needs your help. Mr Ngcobo, the owner of a very valuable Egyptian artifact, lines in Nelson Mandel Building in Cape Town. Mr Ngcobo is moving into a new apartment within his buidling , from Ground flooor to the First floor. He owns a priceless ancient dog-headed Egyptian water clock.  However, due to the delicate nature of the water clock, no humans hands may touch the artifact. The owner is very concerned about how this irem will be moved and has given instructions to the moving company as how the clock should be moved. However , gloved hands may briefly move the object to a moving device or transfortation method.  Furthermore, Moving SA is eager to please Mr Ngcobo and has agreed to desgin a machine that will do the job. Moviong SA wants to hire you to design a machine to do the job. 

Your task is to  design a machine that will move the ancient water clock from the ground floor to the first floor where Mr Ngcobo lives. You will work in teams of three to complete this task. Each group member must have a particular role and responsibility. 

Go to resources and  a soft copy of the instructions. This includes the Investigation Skills, Design Brief, Sketches and Working drawings required from you. 

Attached  here is your rubric which you have to use for guidelines. 

Use this link to submit your Mini-PAT under the google drive.  https://drive.google.com/drive/folders/1QxcoS92wGG3LfnhxLmQN5E9OiE-AX6Xa?usp=sharing

                                                 END OF THE LESSON !

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Hydraulic Jack Market PowerPoint PPT Presentations

Introduction to hydraulics

Jul 26, 2014

240 likes | 571 Views

Introduction to hydraulics. Module 1. Objectives. Identify the common uses of hydraulic systems. Determine that liquids are incompressible. Identify the fundamental parts of a hydraulic system. Observe how hydraulic components can be connected together to construct a hydraulic circuit.

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Presentation Transcript

Introduction to hydraulics Module 1

Objectives • Identify the common uses of hydraulic systems. • Determine that liquids are incompressible. • Identify the fundamental parts of a hydraulic system. • Observe how hydraulic components can be connected together to construct a hydraulic circuit. • Identify the main components of the hydraulic work station TP 501. • Explain the main parts of the hydraulic power pack. • Explain the importance of using standard hydraulic symbols.

Objectives • Identify the basic hydraulic laws. • Calculate the piston area, force, and pressure. • Explain Pascal’s law and apply it on different examples. • Differentiate between the flow rate and flow velocity. • Demonstrate the continuity equation. • Calculate the area, velocity, and flow rate at different sections of a pipe. • Describe how to read a pressure gauge in the US and SI units. • Set the pressure gauge of the hydraulic power pack to a certain pressure.

Introduction • All machines require some type of power source and a way of transmitting this power to the point of operation. • The three methods of transmitting power are: 1. Mechanical 2. Electrical 3. FLUID Fluid power is the method of using pressurized fluid to transmit energy Liquid OR Gas is referred to as Fluid.

There are two branches of Fluid Power

Pneumatics • Pneumatic systems use compressed air to transfer force. • Air is Compressible. • This describes whether it is possible to force an object into a smaller space than it normally occupies. • For example, a sponge is compressible because it can be squeezed into a smaller size

Hydraulics • Hydraulic systems use compressed liquid to transfer force. • Liquid is InCompressible. • Incompressible is the opposite to compressible. • When a “squeezing” force is applied to an object, it does not change to a smaller size. • Liquid, for example hydraulic fluid, possesses this physical property . Hydraulic systems are commonly used where mechanisms require large forces and precise control

Examples of Hydraulic Systems

Vehicle Brake Hydraulic Systems • The function of a vehicle braking system is to stop or slow down a moving vehicle. • When the brake pedal is pressed, the hydraulic pressure is transmitted to the piston in the brake caliper of the brakes. • The pressure forces the brake pads against the brake rotor, which is rotating with the wheel. • The friction between the brake pad and the rotor causes the wheel to slow down and then stop.

Vehicle Power Steering • The vehicle power steering system uses hydraulic oil, the hydraulic pump supplies the oil through the control valves to the power cylinder. • The major advantage of using this system is to turn the vehicle’s wheels with less effort.

Hydraulic Jack • In a hydraulic jack, a small piston (pumping piston) transmits pressure through the oil to a large piston (power piston) through a check valve, resulting in the weight being lifted.

Aircraft Hydraulic system • All modern aircraft contain hydraulic systems to operate mechanisms, such as: 1. Flaps 2. Landing gear • The hydraulic pump that is coupled to the engine provides hydraulic power. • Power is also distributed to systems through the aircraft by transmission lines. • Hydraulic power is converted to mechanical power by means of an actuating cylinder or hydraulic motor.

Hydraulic System Components Conduct-ors

Power Input Device: • The pump and motor together are called the power input device; the pump provides power to the hydraulic system by pumping oil from the reservoir/tank. The pump’s shaft is rotated by an external force which is most often an electric motor .

Control Device: • Valves control the direction, pressure, and flow of the hydraulic fluid from the pump to the actuator/cylinder.

Power Output Device: • The hydraulic power is converted to mechanical power inside the power output device. The output device can be either a cylinder which produces linear motion or a hydraulic motor which produces rotary motion.

Liquid: • The liquid is the medium used in hydraulic systems to transmit power. The liquid is typically oil, and it is stored in a tank or reservoir.

Conductors: The conductors are the pipes or hoses needed to transmit the oil between the hydraulic components.

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