三一小噸位起重機(jī)結(jié)構(gòu).pptx

1、Structure of Small-tonnage Truck Crane of SANY,Contents,1, Category of Crane in Ning Xiang Industry Park 2, Basic Principle of Truck Crane 3, Main Structure 4, Hydraulic System 5, Electrical System,1,2,1, Category of Crane in Ning Xiang Industry Park,3,All-terrain Crane,Truck Crane,Lorry Crane,Rough

2、 Terrain Crane,Category,4,2, Basic Principle of Truck Crane,5,Basic Principle,The 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.,Engine,M

3、ain control values,Cooling exchange,Swing motor,Telescopic cylinder,Auxiliary winch,Fifth Outrigger cylinder,Main winch,Air Condition,Gearbox PTO out port,Pumps group,Hydraulic oil tank,Outrigger control valves,Luffing cylinder,Level Outrigger cylinders,Vertical Outrigger cylinders,6,3, Main Structu

4、re,7,Main structure,Structure the truck crane,Main/auxiliary hook,Telescopic boom,Luffing cylinder,Control cabin,Main/auxiliary winch,Jib,Turntable,Chassis,Outriggers,8,Telescopic Boom System,Main structure,9,Telescopic boom system is one of the most important part in truck crane. And ,it is the mos

5、t important bearing structure when lifting load. 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.,Tel

6、escopic boom cylinder,Telescopic boom steel wire rope,Guide wheel,Slider,Pulley block,Main structure,10,Luffing System,Luffing system consist of luffing cylinder, pressure sensor and articulated mechanism. As the luffing cylinder extend or reduction, the telescopic boom rotate around with the articu

7、lated mechanism. And then the boom can up and down.,Pressure sensor,Articulated mechanism,Main structure,11,Winch System,Winch 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 unit,Wi

8、nch unit,Winch control unit,Main structure,12,Winch drive unit consist of variable hydraulic motor and motor reducer.,Hydraulic motor,Motor reducer,Main structure,13,Winch unit consist of reel, roller and steel wire rope.,Reel,Roller,Main structure,14,Swing System,In order to make sure the work plat

9、form 360 degree rotation, we designed the swing system to achieve it. Swing system consist of slewing bearing, turn table, swing motor and motor reducer.,Swing motor and motor reducer,Slewing bearing,Turn table,Main structure,15,4, Hydraulic System,16,Hydraulic system,A typical hydraulic circuit,Con

10、trol valves,Check valve,Oil tank,Overflow valve,Throttle valve,Cylinder,Pump,17,Power originals: Three pumps group,The 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 a

11、ction in telescopic system and luffing system the first pump and the second pump will working for the winch system together.,Hydraulic system,18,Outriggers circuit,Outriggers circuit consist of vertical cylinder, level cylinder, the fifth cylinder, outrigger control valves and hydraulic lock.,Outrig

12、ger control valves,Outrigger select stem,Check valve,Overflow valve,P,T,To center swing joint,Telescopic control stem,Hydraulic system,19,Hydraulic lock can prevent outriggers from sinking automatically,Hydraulic lock,Slider,Check valve,Hydraulic system,20,Luffing circuit,Luffing circuit consist of

13、pressure sensor, luffing cylinder and luffing balancing valve.,Luffing cylinder,Luffing balancing valve,Hydraulic system,21,Boom telescopic circuit,Boom telescopic circuit consist of 1# cylinder, 2#cylinder, telescopic select valve and telescopic balancing valve.,Telescopic balancing valve,Telescopi

14、c select valve,Hydraulic system,22,Winch circuit,Swing circuit consist of winch motor, winch balancing valve, motor speed select valve.,Hydraulic system,23,Swing circuit,Swing circuit consist of swing motor, swing control valve, swing braking valve, swing buffering valve, check throttle valve and ac

15、cumulator.,Hydraulic system,Swing motor,Swing buffering valve,Check throttle valve and Accumulator,24,Hydraulic motor,Swing control valve,Swing buffering valve,Swing braking valve,Accumulator,Check throttle valve,Hydraulic system,25,5, Electrical System,26,Electrical system,27,SYMC controller,SYLD m

16、onitor,GPS,Electrical system,28,Length/Angle sensor,Angle sensor,Length sensor,The 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 system,29,The 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