Discover the benefits of our brand new hydraulic motor dedicated to swing drive of excavators. What is an axial piston motor and why do you need it. Aug 25, 2015 hydraulic motors objectives after reading this chapter, the student will be able to. Rugged hydraulic motors transform fluid energy into rotary mechanical power, which.
The controlled movement of parts or a controlled application of force is a common requirement in the industries. The piston is inside the cylinder, the diameter of which. This can be calculated by adding the volumes of the motor chambers or by rotating the motors shaft one. The system used as a fork driver is a hydraulic system. The hydraulic motor converts the operating oil pressure into torque to drive the drive axle or drive wheels of the car. A hydraulic motor is a mechanical actuator that converts hydraulic pressure and flow into torque. The smaller ones are called mini or compact excavators. A hydraulic motor is a mechanical actuator that converts hydraulic pressure and flow into torque and angular displacement. Operation exhibits high force capability, high power per unit weight and v.
As an example of how to calculate hydraulic motor size to match an application, consider the following. The output torque of an external gear motor is a function of pressure on one. Defining a hydraulic motors internal volume is done simply by looking at its displacement, thus the oil volume that is introduced into the motor during one output shaft revolution, in either in. Hydraulic motors objectives after reading this chapter, the student will be able to. We supply hydraulic pump parts to the world include hydraulic piston pump parts,hydraulic pump,hydraulic motor,charge pump,swing travel motor. The top countries of suppliers are south korea, china, and south korea, from which the percentage of hydraulic swing motor supply is 1%, 99%, and 1% respectively. The main function of the excavator engine is to drive the hydraulic pumps that provide oil at a high pressure to the slew motor, rams, track motors, and several accessories. The energy transferred from the pump to the fluid appears as the pressure and velocity of the fluid. Hudong is hydraulic guillotine shear manufacturer in china.
Typical of bentaxis motors, the f12 motor has robust construction and can be used in both open and closedloop circuits. Combined velocity and position control of large inertial. For cutting the metal plate with over 8mm thickness, the guillotine shearing machine must be selected. Hydraulic cylinders can be divided into piston type, plunger type, multistage telescopic sleeve type, gear rack type according to the structure. The valvecontrolled hydraulic motor system is used extensively in large inertial swing systems of mobile machines. Modern hydraulic excavators come in a wide variety of sizes. A hydraulic motor works by channelizing the power generated by fluids and converting it into motion. Apr 23, 2016 hydraulic actuator a cylinder or fluid motor that converts hydraulic power into useful mechanical work. Hydraulic systems introduction and working principle. Hydraulic energy flowpressure is translated into mechanical energy by means of a gearwheel set, cardan shaft, and output shaft. Also, a hydraulic motor is usually designed for working pressure at both sides of the. The top of the unit is usually a hydraulic piston swing motor and below will be the swing gear reduction unit normally refereed to as the swing drive or. Similar to piston pumps, axial piston motors work with a bent axis design or swash plate principle. Its cutting process should ensure a good linearity and parallelism of the cutting surface while avoiding warp so as to get the highquality workpiece.
Hpy cone crusher combined with the optimal crushing chamber, large eccentricity, the optimal swing frequency and the laminating crushing principle, which makes the performance of hpy cone crusher more stability, getting more greater throughput. The machine is one kind of highclass product combined with mechanical technology, electrical technology, hydraulic technology and advanced crushing technology. Hydraulic swing motor control circuit caterpillar tractor co. Hydraulic motors parts and components dta hydraulics. The fixed displacement type works as a hydraulic motor, and the variable displacement type most often functions as a hydraulic pump. The hydraulic motor must be geared to hydraulic system requirements. The first hydraulic excavator was created in 1960s, in germany, than it was introduced to japan and other places, being widely applied across the world. Flow and pressure equal power of the motor whereas displacement. Sep 24, 20 defining a hydraulic motors internal volume is done simply by looking at its displacement, thus the oil volume that is introduced into the motor during one output shaft revolution, in either in. In the variable model, the swashplate is mounted in a swinging yoke, and the.
Energysaving analysis of hydraulic hybrid excavator based. Differentiate between hydraulic pumps and motors understand and describe the design and construction of various motors used in hydraulics explain the operation of the various hydraulic motors of the likes of gear, vane and piston motors and also evaluate. The amazing amount of force a cylinder exerts is due to the simple mechanical principle of pressure exerted on the surface area of the piston. Most broadly, the category of devices called hydraulic motors has sometimes included those that run on hydropower namely, water engines and water motors but in todays terminology the name usually refers more specifically to motors that use. Hydraulic motors for excavator swing drive youtube. William smith otis in the united states in 1837, which was powered by the steam at that time. The f12 series bentaxis hydraulic motor deliver operating pressures to 480 bar 7,000 psi and speeds up to 7,300 rpm. The hydraulic press brake includes the support, a work table, and pinchoff blades which clamp the workpiece in a tight manner. It consists of the ap212 external gear pump, the apm212 fan drive motor and the eslf 101 electronic control unit. Take a manual jack cylinder as an example the jack is actually the simplest hydraulic cylinder.
In essence, a hydraulic motor is simply a hydraulic pump working backward. The sole purpose of a pump in a hydraulic system is to provide flow. Axialpiston motors also use the reciprocating piston motion principle to rotate. Working principle of hydraulic cylinder factory suppliers. Working principle of hydraulic lift direct acting and. Swing circle is singlerow, sheartype ball are immersed in lubricant swing speed 1 8. Located on top of the support, the worktable consists of a pressure plate and the foundation to which the pinchoff blades are connected via hinges. Nov 22, 2017 hydraulic motor types and how are they work. Energysaving research of excavators is becoming one hot topic due to the increasing energy crisis and environmental deterioration recently.
The working principle is that the enginedriven oil pump boosts the working oil in the system, and the pressure oil leads to the pipeline, various control elements and hydraulic motors. In two servoactuator systems, the valve is mounted directly on the actuator to avoid the increases of natural frequency. A wide variety of hydraulic swing motor options are available to you, there are 1,280 suppliers who sells hydraulic swing motor on, mainly located in asia. These operations are performed mainly by using electrical machines or diesel, petrol and steam engines as a prime mover. Take a manual jack cylinder as an example the jack is actually the simplest hydraulic cylinder the hydraulic oil enters through a single valve through a. Nowadays, the famous shearing machine manufacturers all over the world are mainly producing hydraulic guillotine shearing machine, and the price is. Parker aerospaces valves and related devices include vent, heater, breakaway, parkbrake, airbleed, fuel swingcheck, checkbaffle, pressure regulating shutoff, and motor and solenoidoperated fuelrefuel shutoff valves.
The fan drive motor is designed on the building block principle and can be supplied with the following options. Hydraulic piston pump parts,hydraulic pump,hydraulic motor. However, shifting the directional control valve to an operating position causes the. A 4way valve pressurizes and exhausts two ports interdependently. Hydraulic press brake work principle, hudong torsion. It allows the conversion of pressure resulting from fluids liquids and gases into. Swing motors are hydraulic motors that form the proper turning force of excavator. One of the first rotary hydraulic motors to be developed was that constructed by william armstrong for his swing bridge over the river tyne. Hydraulic motors for excavator swing drive by poclain hydraulics maquinaria magazine online. Compactness, reliabilty, accuracy, efficiency and comfort for higher productivity hydraulic excavators.
Swing motors are core elements necessary for the operation of excavators. Hydraulic guillotine shear work principle, hudong gantry. The working principle of gear pump the structure of the gear pump is very simple, that is, it is the most basic form of two dimensions of the same gear in a tight fit the shell body of a mesh with each other in the rotation, the shell of internal similar 8 glyph, two gear installed inside, outside diameter of gear on both sides and the shell and tight fit. External rim rollers integral part of motor housing 2. The top of the unit is usually a hydraulic piston swing motor and below will be the swing gear reduction unit normally refereed to as the swing drive or swing gear box. More than 500 models is avaliable,rexroth,kwasaki,linde,vickers,hitachi,sauer,liebbherr,komatsu etc. The mechanical motion produced maybe linear, rotary, or oscillatory. The operators cabin, engine, counterweights, hydraulic and fuel tanks are attached to the undercarriage, enabling the excavator to swing 360 without any hindrance. For example, caterpillars smallest miniexcavator weighs 2,060 pounds 930 kg and has hp. Most broadly, the category of devices called hydraulic motors has sometimes included those that run on hydropower namely, water engines and water motors but in todays. Working principle of hydraulic shearing machine as we put at the beginning of the post, the sheet metal shearing is realized by upper and lower blade movement driven by hydraulic system. China mini hydraulic motor manufacturers select 2020 high quality mini hydraulic motor products in best price from certified chinese cylinder manufacturers, hydraulic motor suppliers, wholesalers and factory on. Valve motor two servo actuator system or servo motor. Travel, boom swing, blade, variable leg and reserve are mechanical.
Hydraulic swing motor on sales quality hydraulic swing. Kobelco sk2106 sk2108 excavator hydraulic swing motor sm22008 blue slew motor specifications. This equipment is designed to conquer heavy loads raised, or for the purpose of digging. The hydraulic circuit 10 also includes a pump 14 connected to a tank 16, a pressure compensated directional control valve 17 connected to the pump 14 through a conduit 18, and first and second motor conduits 19,21 connecting the valve 17 to opposite sides of the hydraulic swing motor 11. Hydraulic motors for excavator swing drive by poclain hydraulics. The basics behind a fluid or hydraulic pump is a machine which transfers the energy from its moving parts to the fluid oil, water, hightemperature air, and even electrons passing through the machine. A beginners guide on how does a hydraulic motor work. This video provides technical insight for swing motor. The basic working priciple of a hydaulic fluid pump. Parker aerospaces valves and related devices include vent, heater, breakaway, parkbrake, airbleed, fuel swing check, checkbaffle, pressure regulating shutoff, and motor and solenoidoperated fuelrefuel shutoff valves. However, shifting the directional control valve to an operating. Valve cylinder two servo actuator system or servo cylinders. Simply put, the larger the diameter of the cylinder, the more it will lift.
Axial piston motor hydraulic pumps and parts dta hydraulics. They are available in displacements from 30250 ccrev. Let us understand how a hydraulic motor works through this writeup. Control strategy for hybrid excavator swing system driven by. We supply hydraulic pump parts to the world include hydraulic piston pump parts, hydraulic pump, hydraulic motor,charge pump, swing travel motor. A pump, which is the heart of a hydraulic system, converts mechanical energy, which is primarily rotational power from an electric motor or engine, into hydraulic energy. Sep 03, 2012 how to run an excavator for beginners. As the control valves have only one degree of freedom, and their inlet and outlet orifices are coupled mechanically, the pressure and flow of the hydraulic motor inlet and outlet cannot be controlled individually, resulting in poor controllability and high energy. A hydraulic motorr is a type of motor that converts the flow of a liquid under pressure into rotational motion. Hydraulic actuator a cylinder or fluid motor that converts hydraulic power into useful mechanical work. Instead of mechanical parts moving fluid by pushing on it, highpressure fluid pushes on the mechanical parts, causing them to move.
The 4way function is a common type of directional control valve for both air and hydraulic circuits. Hydraulic motors are conventionally employed in rotating the upper structure of. The guillotine shear is commonly used to cut sheet metals with straight edges. Eaton swing drive motor catalogue emopimc019e5 december 2015. Hydraulic hybrid excavator based on common pressure rail hhec provides an alternative with electric hybrid excavator because it has high power density and environment friendly and easy to modify based on the existing manufacture process. A hydraulic motor makes use of fluids in its working and employs the science of hydraulics. Travel motor of hydrodynamic transmission factory suppliers. In the second principle a pressure difference is built up over the secondary unit that always results in a.
A 3position, 4way valve is more common in hydraulic circuits. May 06, 1986 the hydraulic circuit 10 also includes a pump 14 connected to a tank 16, a pressure compensated directional control valve 17 connected to the pump 14 through a conduit 18, and first and second motor conduits 19,21 connecting the valve 17 to opposite sides of the hydraulic swing motor 11. The distributed parameter model of hydraulic axial piston motor and its application in hydraulic excavator swing system. A novel hydraulic pulsation reduction component based on.
Hpy series multicylinder hydraulic cone crusher is one of advanced cone crushers in china, which is developed and manufactured by our company. The basic idea was a speed controlled hydraulic motor. The hydraulic motor is the rotary counterpart of the hydraulic cylinder as a linear actuator. The first swing mechanical excavator was invented in 1895, a milestone in the excavators history. When the cone crusher works, the rotation of the motor is performed by a pulley or coupling, the cone crusher transmission shaft and the crusher cone under the force of an eccentric sleeve to make a swing motion around a fixed point. Hydraulic motors for excavator swing drive by poclain.