三一小噸位起重機結(jié)構(gòu)

1、Structure of Small-tonnage Truck Crane of SANYContents1, Category of Crane in Ning Xiang Industry Park 2, Basic Principle of Truck Crane 3, Main Structure4, Hydraulic System5, Electrical System 121, Category of Crane in Ning Xiang Industry Park3All-terrain CraneTruck CraneLorry CraneRough Terrain Cr

2、aneCategory42, Basic Principle of Truck Crane 5Basic PrincipleThe truck crane in SANY is hydraulic crane. The pump send the hydraulic oil to the actuator through many control values. And the power of all the action comes from the Engine which assembled in automobile chassis.EngineMain control values

3、Cooling exchangeSwing motorTelescopic cylinderAuxiliary winchFifth Outrigger cylinderMain winchAir ConditionGearbox PTO out portPumps group Hydraulic oil tankOutrigger control valvesLuffing cylinderLevel Outrigger cylindersVertical Outrigger cylinders63, Main Structure7Main structureStructure the tr

4、uck craneMain/auxiliary hookTelescopic boomLuffing cylinderControl cabinMain/auxiliary winchJib Turntable Chassis Outriggers 8Telescopic Boom SystemMain structure9Telescopic boom system is one of the most important part in truck crane. And ,it is the most important bearing structure when lifting loa

5、d. The strength and stiffness are able to affect the ability of the truck crane. And the telescopic boom system consist of telescopic boom, lattice boom, telescopic boom cylinder, telescopic boom steel wire rope, guide wheel, slider and pulley block.Telescopic boom cylinderTelescopic boom steel wire

6、 ropeGuide wheelSliderPulley blockMain structure10Luffing SystemLuffing system consist of luffing cylinder, pressure sensor and articulated mechanism. As the luffing cylinder extend or reduction, the telescopic boom rotate around with the articulated mechanism. And then the boom can up and down. Pre

7、ssure sensorArticulated mechanismMain structure11Winch SystemWinch system is used to lift weights. And it consist of winch drive unit, winch unit and winch control unit. Usually, there are two winches on the truck crane. Winch drive unitWinch unitWinch control unitMain structure12Winch drive unit co

8、nsist of variable hydraulic motor and motor reducer.Hydraulic motorMotor reducerMain structure13Winch unit consist of reel, roller and steel wire rope. Reel Roller Main structure14Swing SystemIn order to make sure the work platform 360 degree rotation, we designed the swing system to achieve it. Swi

9、ng system consist of slewing bearing, turn table, swing motor and motor reducer.Swing motor and motor reducerSlewing bearingTurn tableMain structure154, Hydraulic System16Hydraulic systemA typical hydraulic circuitControl valvesCheck valveOil tankOverflow valveThrottle valveCylinder Pump 17Power ori

10、ginals: Three pumps groupThe first pump works for telescopic system and luffing system. The second pump works for winch system. And the third pump works for outriggers system and swing system. As there are no action in telescopic system and luffing system the first pump and the second pump will work

11、ing for the winch system together.Hydraulic system18Outriggers circuitOutriggers circuit consist of vertical cylinder, level cylinder, the fifth cylinder, outrigger control valves and hydraulic lock.Outrigger control valvesOutrigger select stemCheck valveOverflow valvePTTo center swing jointTelescop

12、ic control stemHydraulic system19Hydraulic lock can prevent outriggers from sinking automaticallyHydraulic lockSlider Check valveHydraulic system20Luffing circuitLuffing circuit consist of pressure sensor, luffing cylinder and luffing balancing valve. Luffing cylinderLuffing balancing valveHydraulic

13、 system21Boom telescopic circuitBoom telescopic circuit consist of 1# cylinder, 2#cylinder, telescopic select valve and telescopic balancing valve. Telescopic balancing valveTelescopic select valveHydraulic system22Winch circuitSwing circuit consist of winch motor, winch balancing valve, motor speed

14、 select valve.Hydraulic system23Swing circuitSwing circuit consist of swing motor, swing control valve, swing braking valve, swing buffering valve, check throttle valve and accumulator.Hydraulic systemSwing motorSwing buffering valveCheck throttle valve and Accumulator24Hydraulic motorSwing control

15、valveSwing buffering valveSwing braking valveAccumulator Check throttle valveHydraulic system255, Electrical System 26Electrical system27SYMC controllerSYLD monitorGPSElectrical system28Length/Angle sensorAngle sensorLength sensorThe length/Angle sensor is install on the boom. And it is used to measure the length of the boom extend and the angle of the boom rose.Electrical system29The conducting ring install at the center of rotation circle. And it is used to transmit electric power and signals.The height limiter is install on the top of the boom. It is used to stop weight