DOCSLIB.ORG

Unit 2. ACTUATORS and Power Unit  Introduction:  an Actuator Is a Component of Machines That Is Responsible for Moving Or Controlling a Mechanism Or System

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Unit 2. ACTUATORS and Power Unit  Introduction:  an Actuator Is a Component of Machines That Is Responsible for Moving Or Controlling a Mechanism Or System Unit 2. ACTUATORS and Power Unit Introduction: An Actuator is a component of machines that is responsible for moving or controlling a mechanism or system. The supplied main energy source may be electric current, hydraulic fluid pressure, or pneumatic pressure. When the control signal is received, the actuator responds by converting the energy into mechanical motion. It is a device which converts fluid power into rotary power or converts fluid pressure into torque or linear power. Introduction- . They extract energy from a fluid, and convert it to mechanical energy to perform useful work. Hydraulic cylinders, also called linear actuators provide a force that drives an external load along a straight line. Hydraulic motors, also called rotary actuators, provide a torque that drives an external load along a circular path. Hydraulic F x v System Hydraulic Cylinder V x I P x Q Electric T x ω Hydraulic Motor Pump T x ω Hydraulic Motor Difference between Hydraulic Motor and Hydraulic Pump Hydraulic Motor Hydraulic Pump It is a device for delivering torque at a It is a device for delivering flow at a given pressure. The main emphasis is on given pressure. The main emphasis is on mechanical efficiency and torque that volumetric efficiency and flow. can be transmitted. Motors usually operate over a wide Pumps usually operate at high RPM. range of speed, from a low RPM to high RPM. Most motors are designed for In most situations, pumps usually bidirectional applications such as operate in one direction. braking loads, rotary tables. Motors may be idle for long time Pumps usually operate continuously. Motors are subjected to high side loads Majority of pumps are not subjected to (from gears, chains, belt-driven pulleys). side loads. Comparison between a Hydraulic motor and an Electric motor Electric Motor Hydraulic Motor Electric motors cannot be stopped Hydraulic motors can be stalled for any instantly. length of time. Their direction of rotation cannot be Their direction of rotation can be reversed instantly. instantly reversed and their rotational This is because of air gap between the speed can be infinitely varied without rotor and stator and the weak magnetic affecting their torque. field. They can be braked instantly and have immense torque capacities. Electric motors are heavy and bulky. Hydraulic motors are very compact compared to electric motors. For the same power, they occupy about 25% of the space required by electric motors and weigh about 10% of electric motors. Applications: Applied directly to the work. They provide excellent control for acceleration, operating speed, deceleration, smooth reversals and positioning. They also provide flexibility in design and eliminate much of bulk and weight of mechanical and electrical power transmission. A hydrostatic transmission converts mechanical power into fluid power and then reconverts fluid power into shaft power. The advantages of hydrostatic transmissions include power transmission to remote areas, infinitely variable speed control, self-overload protection, reverse rotation capability, dynamic braking and a high power-to-weight ratio. Eg: Material-handling equipment, farm tractors, railway locomotives, buses and machine tools Rotary actuators- 1.Gear Motors: Working- A gear motor develops torque due to hydraulic pressure acting against the area of one tooth. There are two teeth trying to move the rotor in the proper direction, while one net tooth at the center mesh tries to move it in the opposite direction. In the design of a gear motor, one of the gears is keyed to an output shaft, while the other is simply an idler gear. Pressurized oil is sent to the inlet port of the motor. Pressure is then applied to the gear teeth, causing the gears and output shaft to rotate. The pressure builds until enough torque is generated to rotate the output shaft against the load. The side load on the motor bearing is quite high, because all the hydraulic pressure is on one side. This limits the bearing life of the motor. 2.Vane Motors: 3.Axial Piston Motors: Axial Piston Motors: 4.Swash-plate piston motor 5.Bent-Axis Piston Motors: 6.Radial Piston Motors: Performance of Hydraulic Motors: 1.Starting torque: The starting torque is the turning force the motor exerts from a dead stop. 2. Running torque: Running torque is exerted when the motor is running and changes whenever there is a change in fluid pressure. 3. Stalling torque: Stalling torque is the torque necessary to stop the motor. Volumetric efficiency: Mechanical efficiency: Here, Overall efficiency: Example: A hydraulic motor receives a flow rate of 72 LPM at a pressure of 12000 kPa. If the motor speed is 800 RPM, determine the actual torque delivered by the motor assuming the efficiency 100%? Cont. Semi-Rotary Actuators- Devices used to convert fluid energy into a torque which turns through an angle limited by the design of the actuator 1.Vane-Type Semi-Rotary Actuator 1.1(Single Vane)- A semi-rotary actuator allows only a partial revolution. A vane-type semi-rotary actuator consists of a vane connected to an output shaft. When hydraulic pressure is applied to one side of the vane, it rotates. A stop prevents the vane from rotating continuously. The rotation angle in the case of a single-vane semi-rotary actuator is 315°. 1.2.Two-Vane-Type Semi-Rotary Actuator- The advantage of this design is that the torque output is increased because the area subjected to pressure is large. However, two-vane models cannot rotate as many degrees as can single- vane models. It is limited to 100°. 2.Chain and Sprocket Semi-Rotary Actuator- It is suitable for multi-revolution applications. The larger cylinder is the power cylinder and the smaller cylinder is the chain return or seal cylinder . The larger piston moves away from the port due to differential areas of the two pistons. The movement of larger piston pulls the chain, causing the sprocket and output shaft to rotate. 3.Rack and Pinion Rotary Actuator- Used design for obtaining partial revolution actuation. The cylinder drives a pinion gear and the rack is an integral part of the piston rod. The angle of rotation depends upon the stroke of the cylinder, rack and the pitch circle diameter of the pinion. Types of Hydraulic Cylinders/Linear Actuator: Hydraulic Cylinders are of the following types: 1. Single-acting cylinders. 2. Double-acting cylinders. 3. Telescopic cylinders. 4. Tandem cylinders. 1.Single-Acting Cylinders Piston Seal Piston Rod Extension Graphic Symbol Retraction Barrel Port According to the type of return, single-acting cylinders are classified as follows: a. Gravity-return single-acting cylinder. b. Spring-return single-acting cylinder. a. Gravity-return single-acting cylinder: Figure :Gravity-return single-acting cylinder: (a) Push type; (b) pull type b. Spring-return single - acting cylinder. Working- Single Acting Hydraulic Cylinders Push Action Pull Action Oil to extend, Spring Oil to retract, for return Spring to extend 2.Double-Acting Cylinder: There are two types of double-acting cylinders: a. Double-acting cylinder with a piston rod on one side. b. Double-acting cylinder with a piston rod on both sides. a. Double-Acting Cylinder with a Piston Rod on One Side Graphic Symbol b. Double-Acting Cylinder with a Piston Rod on Both Sides Graphic Symbol 3. Telescopic Cylinder : used when a long stroke length and a short retracted length are required. 4. Tandem Cylinder Used in applications where a large amount of force is required from a small-diameter cylinder. Cylinder Cushions Prevention of shock due to stopping loads at the end of the piston stroke, cushion devices are used. Cushions may be applied at either end or both ends. Cylinder Cushions (Cont.) Cylinder Force, Velocity and Power The output force (F) and piston velocity (v) of double-acting cylinders are not the same for extension and retraction strokes. Hydraulic Cylinder Calculation – Extending Retracting Power developed by a hydraulic cylinder (both in extension and retraction) is, Power =Force ×Velocity =F* V Cylinder Mountings- Selecting a particular mounting is depends on whether the force applied is tensile or compressive. Alignment of the rod with the resistive load is another important consideration while selecting cylinder mounts. The ratio of rod length to diameter should not exceed 6:1 to prevent bucking Types- 1. Centre line Mountings- cylinder supported along its centerline. Forces occurs only along axis of cylinder 2.Foot Mountings- cylinder introduce torque under loaded condition 3.Pivot Mounting-when cylinder allowed to rotate while reciprocating .
Load more

Recommended publications
  • Hydraulic Motors Catalog
    HYDRAULIC MOTORS CATALOG DESIGN MANUFACTURE INTEGRATE 1 877 382-2850 EAGLE-HYDRAULIC.COM 1 OEM HYDRAULIC CYLINDERS 2 STANDARD HYDRAULIC CYLINDERS HYDRAULIC POWER UNITS -AC 3 -DC HYDRAULIC COMPONENTS -Pumps 4 -Motors 5 SYSTEM INTEGRATION 6 NEW: NOVAPEAK TABLE OF CONTENTS EBMM 4 EBMP/ EBMPH/ EBMPW/ EOZ 12 EBMR/ EBMRS/ EBMRWN/ EBMR-BK01/ EOK 39 EBMH 65 EBMSY 75 EBMT/ EBMTE/ EBMTJ/ EBMTS 99 EBMV 123 EBMK2 134 EBMK6 152 EBME2 167 EBMJ 182 EBMER-2/ EBMER-3/ EBMER-4 187 EGM02 GEARMOTOR HIGH SPEED 214 SPEED SENSOR 216 VALVES (CROSSOVER RELIEF/ SWITCH/ OVERCENTER/ COUNTERBALANCE) 217 HYDRAULIC BRAKES EBK10 / EBK2 226 LIMITED WARRANTY 238 HYDRAULIC PRODUCT SAFETY 240 FLUID POWER FORMULAS 241 COMPARISON TABLE 244 EBMM SERIES EBMM series motor is a small volume, economical type, which is designed with shaft distribution flow, which adapts the Gerotor gear set design and provides a compact volume, high power and low weight. FEATURES • Advanced manufacturing devices for the Gerotor gear set, which provide small volume, high efficiency and long life. • Shaft seal can bear high pressure and can be used in parallel or in series. • Advanced construction design, high power and low weight. • Speed sensor available on request. • Internal construction: no bearing, no bushing EBMM - Flange F - Rear Port Max. Inlet Pressure Continuous PSI (bar) 2538 (175) EBMM8-50 Intermittent PSI (bar) 3263 (225) EBMM EBMM EBMM EBMM EBMM EBMM 8 12.5 20 32 40 50 Geometric displacement in3/rev (cm3/rev.) 0.5 (8.2) 0.79 (12.9) 1.21 (19.9) 1.93 (31.6) 2.43 (39.8) 3.07 (50.3) EBMM Continuous (rpm) 1950 1550 1000 630 500 400 Max.
    [Show full text]
  • A Review of Biological Fluid Power Systems and Their Potential Bionic Applications
    The University of Manchester Research A review of biological fluid power systems and their potential bionic applications DOI: 10.1007/s42235-019-0031-6 Document Version Accepted author manuscript Link to publication record in Manchester Research Explorer Citation for published version (APA): Liu, C., Wang, Y., Ren, L., & Ren, L. (2019). A review of biological fluid power systems and their potential bionic applications. Journal of Bionic Engineering. https://doi.org/10.1007/s42235-019-0031-6 Published in: Journal of Bionic Engineering Citing this paper Please note that where the full-text provided on Manchester Research Explorer is the Author Accepted Manuscript or Proof version this may differ from the final Published version. If citing, it is advised that you check and use the publisher's definitive version. General rights Copyright and moral rights for the publications made accessible in the Research Explorer are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. Takedown policy If you believe that this document breaches copyright please refer to the University of Manchester’s Takedown Procedures [http://man.ac.uk/04Y6Bo] or contact [email protected] providing relevant details, so we can investigate your claim. Download date:04. Oct. 2021 A review of biological fluid power systems and their potential bionic applications Chunbao Liu1,2, Yingjie Wang 1,2, Luquan Ren 2, Lei Ren2,3 1 School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, China 2 Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China 3 School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester M13 9PL, UK Abstract Nature has always inspired human achievements in industry, and biomimetics is increasingly being applied in fluid power technology.
    [Show full text]
  • What Is Hydraulic and Pneumatic System
    Module-01 : INTRODUCTION TO HYDRAULIC AND PNEUMATIC SYSTEMS Lecture-01 : What is Hydraulic and Pneumatic System: Fluid power systems use fluids to transmit power and motion. Both liquids and gases are called fluids. Hence both these types of fluids are used in fluid power technology. Under liquids mostly mineral oil with suitable additives are used instead of plain water - (which, however, is used also in some cases) and under gases usually atmospheric air is used after cleaning it suitably. However, synthetic fluids with additives and other gasses are also used for specific purposes, such as fire resistance or the fluid itself is the product- milk as an example. That is the state of art behind these two modern technologies of industrial oil-hydraulics and pneumatics. Fluid power technology actually has a long history behind it. From early days of civilization mankind could feel the existence of power in the water currents of rivers and streams, in ocean waves and in the flowing breeze and in the turbulent storms. Early men could even harness some of these natural sources of energy. Wind energy, for example, was utilized in sailing boats and water current to drive water wheels. Hydroelectric power generation still uses the same idea, of course now-a- days in a much more efficient way. Fluid power technology in its earliest forms mostly took advantage of the motion of fluids or scientifically speaking of its kinetic energy. But the present day oil hydraulics mostly depends on the pressure-energy of the fluids rather than its velocity and in some cases it is even called as hydrostatic transmission of power.
    [Show full text]
  • Introduction to Hydraulic Actuators
    Introduction to hydraulic actuators By - Kamalesh 16-11-2012 History and definition Inventor Joseph Bramah of England invented Hydraulic press and was issued a patent on this press in 1795. Pressurized hydraulic fluid used to transfer energy from flow and pressure to drive hydraulic machinery. 01 Principle of hydraulic system Pascal's law is the basis of hydraulic drive systems. 02 Basic hydraulic system Hydraulic jack 03 Hydraulic actuators 1. Hydraulic motors 2. Hydraulic cylinders 04 Hydraulic motors A hydraulic motor is a mechanical actuator that converts hydraulic pressure and flow into torque and angular displacement (rotation). 05 Hydraulic cylinders A Hydraulic cylinder (also called a linear hydraulic motor) is a mechanical actuator that is used to give a unidirectional force through a unidirectional stroke. Single acting vs. double acting 1. Single acting cylinders are economical and the simplest design. Hydraulic fluid enters through a port at one end of the cylinder, which extend the rod by means of area difference. An external force returns or gravity returns the piston rod. 2. Double acting cylinders have a port at each end, supplied with hydraulic fluid for both the retraction and extension. 06 Components of a hydraulic cylinder 1. Cylinder barrel 2. Cylinder base or cap 3. Cylinder head 4. Piston 5. Piston rod 6. Seal gland 7. Seals (nitrile rubber, Polyurethane or Fluorocarbon Viton) 07 Cylinder designs Telescopic cylinder These are multistage cylinders which can fit in the smaller dimensions of machine. Plunger cylinder An hydraulic cylinder without a piston or with a piston without seals is called a plunger cylinder.
    [Show full text]
  • Lecture 14 HYDRAULIC ACTUATORS [CONTINUED]
    Lecture 14 HYDRAULIC ACTUATORS [CONTINUED] 1. 7 First-, Second- and Third-Class Lever Systems Many mechanisms use hydraulic cylinders to transmit motion and power. Among these, lever mechanisms such as toggles, the rotary devices and the push--pull devices use a hydraulic cylinder. In this section, the mechanics of cylinder loading used in first-class, second-class and third-class lever systems is being discussed. 1. 7.1 First-Class Lever System Fixed Cylinder hinge pin rod pin Fixed hinge pin Cylinder Figure 1. 21 First-class lever system In this lever system, the fixed-hinge point is located in between the cylinder and the loading point. The schematic arrangement of a first-class lever system with a hydraulic cylinder is shown in Fig.1. 21. In this system, the downward load acts at the lever end. The cylinder has to apply a downward force to lift the load. The cylinder has a clevis mounting arrangement; it pivots about its eye-end center through an angle. However, the effect of this angle (around 10° to 15°) is negligible on the force and hence cannot be considered. Here, Fload = load to be operated, Fcyl = load to be exerted by a hydraulic cylinder, L1 = distance from the rod end to the pivot point, L2 = distance from the pivot point to the loading point and θ = inclination of the lever measured with respect to the horizontal line at the hinge. When the load is being lifted, the cylinder force rotates the lever in an anticlockwise direction about the pivot point. Due to this, a moment acts in the anticlockwise direction.
    [Show full text]
  • Hydraulic Cylinders – Engineered and Made in Germany
    Hydraulic cylinders Engineered and made in Germany. OUR VISION As a forward-thinking traditional manufacturer, we are expanding our leading position as preferred supplier for hydraulic cylinders of well- known producers in the construction machine, crane and specialty machine industry. We focus on our core competencies and branch into new markets through investment. We are committed to our Black Forest location as shown by the modernization and expansion of our facility there. Andreas Riem, CEO WHO WE ARE Customers at center stage Your partner for demanding tasks Hengstler Zylinder GmbH is a leading manufacturer of high- We have the values of a traditional, medium-sized company, quality, customer-specific hydraulic cylinders. With over 80 and our customers and employees are at the heart of what years of experience we know our customers better than we do. On this basis we develop products and strategies almost anybody else. This individual support is valued and that are successful today and for the future. This makes has added to our reliability and fairness over many years. us a preferred partner for demanding tasks and bespoke solutions involving hydraulic cylinders. Our guiding principle We give customers more than they expect. From the initial idea right through to the finished product, we work closely with our customers. We put the focus on their individual needs, from advice about technology, through to production and customer service, to create win-win solutions. 2 WHAT SETS US APART? Solid expertise Quality awareness and customer Our strength is our specialized knowledge of the design, con- orientation at every level struction and manufacture of premium hydraulic cylinders Reliable quality, cooperative collaboration and mutual trust for construction machines, cranes and specialty machines.
    [Show full text]
  • Electro-Hydraulic Servo System
    Mechanical Engineering Department Mechatronics Engineering Program Bachelor Thesis Graduation Project Electro-Hydraulic Servo System Project Team Ashraf Issa Project Supervisor Eng. Hussein Amro Hebron- Palestine June, 2012 Palestine Polytechnic University Hebron-Palestine College of Engineering and Technology Department of Mechanical Engineering Electro-Hydraulic Servo System Project team Ashraf Issa According to the directions of the project supervisor and by the agreement of all examination committee members, this project is presented to the department of Mechanical Engineering at College of Engineering and Technology, for partial fulfillment Bachelor of engineering degree requirements. Supervisor Signature Supervisor Signature Committee Member Signature Department Head Signature II Abstract This project concerns of building an electro-hydraulic servo system model to be used in the industrial hydraulics lab to achieve the controlling of a hydraulic flow and pressure using a hydraulic servo valves, understanding the internal construction and the operational principles of servo hydraulic valves, understanding the mathematical model of a simple hydraulic system using hydraulic servo valve. The mathematical model for the built system was constructed and the simulation for linear mathematical model was done, and showed that the instability of the system and large steady state error. So indeed the system need an external controller to be designed. III Dedication To Our Beloved Palestine To my parents and family. To the souls that i love and can't see. To all my friends. To Palestine Polytechnic University. To all my teachers. May ALLAH Bless you. And for you i dedicate this project IV Acknowledgments I could not forget my family, who stood beside me, with their support, love and care for my whole life; they were with me with their bodies and souls, and helped me to accomplish this project.
    [Show full text]
  • Energy Storage Techniques for Hydraulic Wind Power Systems
    3rd International Conference on Renewable Energy Research and Applications Milwakuee, USA 19-22 Oct 2014 Energy Storage Techniques for Hydraulic Wind Power Systems Masoud Vaezi, Afshin Izadian, Senior Member, IEEE Energy Systems and Power Electronics Laboratory Purdue School of Engineering and Technology, IUPUI Indianapolis, IN, USA [email protected] Abstract__ Hydraulic wind power transfer systems allow transfer can be controlled by distributing the flow between the collecting of energy from multiple wind turbines into one hydraulic motors [12,13]. generation unit. They bring the advantage of eliminating the The new wind energy harvesting technique for hydraulic gearbox as a heavy and costly component. The hydraulically wind power systems should incorporate power generation connected wind turbines provide variety of energy storing equipment of individual towers in a central power generation capabilities to mitigate the intermittent nature of wind power. This paper presents an approach to make wind power become a unit. By introducing the new generation of wind turbines, more reliable source on both energy and capacity by using energy instead of utilizing the bulky electro-mechanical components, storage devices, and investigates methods for wind energy a hydraulic pump is accommodated is the wind tower. The electrical energy storage. The survey elaborates on three function of this hydraulic pump is to pressurize a fluid through different methods named “Battery-based Energy Storage”, a circuit which passes the hydraulic motor coupled with Pumped Storage Method, and “Compressed Air Energy Storage generator at ground level. This approach will provide several (CAES)”. benefits over the conventional systems such as increased life span, better reliability, and less maintenance requirement Keywords-Renewable Energy; Energy Storage; Wind Power systems; Hydraulic Transfer System.
    [Show full text]
  • Master Brochure 2020 Updated.Indd
    TABLE OF CONTENTS RAM........................................................................................ 1 RAM Cylinder Applications........................................... 2 RAM Quality......................................................................... 3 RAM Hydraulic Cylinders YORK Series (Standard Welded) Cross Tube................................................. 7 Clevis.............................................................. 10 Heavy Duty Cross Tube......................... 11 Heavy Duty Clevis..................................... 11 Stabilizer................................................................... 13 Standard Solid Locking Nut................ 15 Standard Split Locking Nut................. 17 Ball End Solid Locking Nut................... 18 Ball End Split Locking Nut................... 19 Thumb....................................................................... 20 Custom Heavy Duty............................................. 22 Custom Oversized................................................ 24 Piggy-Back............................................................... 26 Smart Sensor........................................................ 28 Telescopic Standard Single Acting........................ 30 Standard Double Acting...................... 32 Truck & Trailer Hoist............................. 36 Mast Raising.............................................. 40 Custom......................................................... 42 Synchronizing (Rephasing)............................... 44 RAMLok Wirelock...............................................
    [Show full text]
  • Hydraulic Servo Systems : Dynamic Properties and Control
    Hydraulic Servo Systems Dynamic Properties and Control by Closed loop stiffness for a Karlposition-Erik servo Rydberg with velocity feedback s2 2 K h s 1 K s K K qi K 2 K vfv f sav A K FL vfv h vfv h p qi S Kvfv 1 K fv Ksav c X K V A p ce t p 2 1 s Ap 4eKce s s2 2 Steady state loop gain [1/s] 1 h s 1 2 2 Ap Kvv Kvfv h Kvfv h Kqi 1 Sc Kvv Kvfv Kvv Ksav K f K V Ap Kvfv ce 1 t s K K (without velocity feedback) K-E Rydberg 4eKce Feedbacks in Electro-Hydraulicvv v Servo Systems 7 For the same amplitude margin, Kv must have the same value in the system with and without velocity feedback. Velocity feedback increases the steady state stiffness with the factor Kvfv.FL K æ V ö ce ç1+ t s÷ Karl-Erik Rydberg, Linköping University, Sweden 2 ç 21 ÷ Ap è 4be K ce ø Threshold Saturation - . u i i imax Kqi 1 xp xp c K r v 1 1 + + sav s + s2 2d ei Ap 1+ + h s + 1 s - - n wv 2 w wh h Velocity feedback Kfv Position feedback Closed loop stiffness for a position servoK fwith velocityFigure 12: A feedbacklinear valve controlled position servo with velocity feedback Am = 6 dB If the bandwidth of the valve is relatively high and threshold and saturation is neglected With velocity feedback, K = 20 1/s, K = 9.0 the velocity feedbackvv will givevfv the effect on the hydraulic resonance frequency and damping as shown in Figure 13.
    [Show full text]
  • Hydraulic Tools
    R HYDRAULIC TOOLS UTILITIES NETWORK MAINTENANCE RESCUE AND CIVIL PROTECTION ROAD MAINTENANCE UNDERWATER WORKS HYDRAULIC GENERATORS AND COMPRESSORS HYDRAULIC PRODUCTS DESIGN ON CUSTOMER SPECIFICATIONS The production of DOA Srl is in constant evolution, DOA Srl reserves the right to make modifications or change configuration, characteristics and functions of products at any time without previous notice or obligations on products already sold. R INDEX POWER PACKS 6 HYDRAULIC GROUP FOR RAILROAD CAR CARRIERS 17 POWER PACK WITH REMOTE CONTROL NIGTH DEFENDER TOWER LIGHT 20 HYDROBOX 18 BREAKERS 24 HAMMER DRILL 27 DISC SAW 28 GRINDER 29 CORE DRILLS 30 VENTILATORS - ASPIRATORS 32 WATER PUMPS 38 MAGNETIC MEMBRANE 48 HYDRAULIC MOTOR FOR HOT TAPPING EQUIPMENT 50 HYDRAULIC MOTOR FOR WATER NETWORK GATES 51 PIPE COMPRESSING TOOLS 52 RECIPROCATING SAW 57 HYDRAULIC GENERATORS 58 HYDRAULIC WELDERS 61 HYDRAULIC COMPRESSORS 62 FLOW PRESSURE CONTROL VALVES 63 MAINTENANCE ACCESSORIES 64 3 R WHY HYDRAULIC TOOLS POWER & PRODUCTIVITY The power to weight ratio of hydraulic tools is unbeatable! A comparative test will immediately demonstrate this advantage that means increased productivity and less fatigue for the operators. TRANSPORTABILITY & ECONOMY The group power pack/tool is very compact and easy to transport, the fuel consumption of power packs is largely less then the one of air compressor, the power pack is lighter and can easily be transported by the smallest vehicles , can be positioned on job site occupying minimal space and without troubling operations and traffic, it does not have the typical problems associated with air compressors such as needs of bra- kes, lighting, car plates, hooks, lifting , parking etc A BETTER WAY TO WORK IN TOTAL SAFETY No other equipment either electric, gasoline, or pneumatic can solve together all the problems related to the urban maintenance of underground pipes.
    [Show full text]
  • Planning and Operating Hydraulic Power Units to Provide Greater Energy Efficiency Build It In
    Energy Efficiency White Paper Planning and operating hydraulic power units to provide greater energy efficiency Build it in. Potential solution for reducing energy consumption and digitalization of data for smart power management Marco Bison, Manager Mechatronic Technologies White Paper WP040005EN Effective April 2016 Introduction Reducing energy consumption is a stated objective of the Euro- pean Union. In 2007, EU Member States agreed to cut primary energy consumption by 20 per cent by 2020. Increasing energy efficiency is an important aspect in supporting this effort. This measure not only reduces energy costs, but also helps achieve a higher level of supply security and protects the climate. Every consumer sector offers considerable potential for energy savings across Europe. Industry plays a key role in this. For instance, in Germany almost 30 per cent of total final energy consumption is accounted for by the manufacturing sector1. The initiatives launched by the EU in this area also include the Ecodesign Direc- tive 2009/125/EC, which stipulates the ecodesign requirements for energy-related products. However, the motivation for companies to improve the energy ef- ficiency of their production processes should not only be driven by the need to fulfill political objectives. This is because increasing en- ergy efficiency also produces tangible cost reductions, while also boosting competitiveness and making an important contribution to protecting the environment. Using a hydraulically powered machine as an example, this white- paper will highlight how, by combining the right components, its energy efficiency can be significantly increased. Depending on the application, energy savings of up to 70 per cent can be achieved, which creates value and rapid return on investment (ROI) for the end user.
    [Show full text]