Puyuan QUY 50 Crawler Crane

Technical Manual

Puyuan Crawler Crane

Technical Manual

QUY 50

Pictures and technical parameters in sample books may not accord with the delivery goods because of the improvement in design.Please understand and make allowance for our problems without notice.

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Outline dimension and main parameters

1 Outline Dimensions and Weight of Complete Vehicle with Basic Boom

2 Main Performance Parameters

3 Outline Dimensions and Weight of Main Transport Components

Basic machine

Counterweight

Technical Instruction

1 Boom and Pendant Plate

2 Mechanisms

3 Systems

4 Safety Equipment

5 Operator s Cab

6 Hook

Self-assembly Dismantling Function

Lifting Performance

1 Main Boom Lifting Performance

2 Main Boom + Fixed Fly Jib Lifting Performance

01

02

03

04

04

05

05

06

06

07

09

11

QUY501 QUY50 2

2 Main Performance Parameters1 Outline Dimensions of Complete Vehicle

t m

t

m

m

t

m

m/min

m/min

m/min

rpm

km/h

MPa

mm

kW/rpm

Nm/rpm

mm

mm

55 3.7

48

13~52

6~15

5

10,30

43 15

120

120

60

0~3.0

0~1.6

40

0.066

6850 3300 3020

132/2200

750/1300

EU Stage II

2540 4700 1020

3540 4700 1020

Retract the track frame

Extend the track frame

The 4th layer of a drum

The 4th layer of a drum

The 4th layer of a drum

Speed of drum single layer rope

Max. lifting load working radius

Deadweight when use basic boom

Main boom length

Fixed fly jib length

Max. lifting load of fixed fly jib

Offset angle of fixed fly jib

Main boom fixed fly jib

Main winch

Auxiliary winch

Luffing gear

Slewing speed

Traveling speed

Gradeability

Ground pressure

Total outline dimensions (L W H)

DongFeng Cummins

Rated power/rotational speed

Max. output torque/ rotational speed

Emission standard

Track space ground contact

length track shoe width

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and w

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ht

QUY503 QUY50 4

3 Outline Dimensions and Weight of Main Transport Components 1 Boom system

The boom is lattice structure and made of high-strength

tubular product.

Main boom

Main boom length 13m 52m

Adjusting lengthened boom section length for main

boom 3m, 6m or 9m

Fixed fly jib

Fixed fly jib length 6 15m

Adjusting lengthened boom section length for fixed fly

jib 3m

Main boom + longest length of fixed fly jib 43m

15m

2 Mechanisms

Counterweight I: 8t

Basic machine: 31t

Counterweight II: 8t

Main hoist mechanismIt consists of concealed axial piston hydraulic motor, balanced valve, reducer, normally closed brake, clutch and wire rope. It is independent of other mechanisms to be operated.The main hoist mechanism possesses free-fall function. (Optional) The main hoist mechanism is two-speed type, having two kinds of lifting speeds, which can improve working efficiency.

Auxiliary hoist mechanismIt consists of concealed axial piston hydraulic motor, balanced valve, reducer, normally closed brake and wire rope. It is independent of other mechanisms to be operated.The auxiliary hoist mechanism is two-speed type, having two kinds of lifting speeds, which can improve working efficiency.

Boom hoist mechanism It consists of concealed axial piston hydraulic motor, balanced valve, reducer, normally closed brake, pulley block and wire rope. It is independent of other mechanisms to be operated.It has ratchet self-locking protecting mechanism, which can prevent luffing gear from slipping because of long time parking.

Slewing gear It consists of concealed axial piston hydraulic motor, gear reducer, brake, pinion gear and slewing ring. The superstructure can realize 360 slewing via slewing ring which is driven by pinion gear.Since slewing gear adopts closed hydraulic system with controllable sliding control, it is steady to start or brake slewing without impact. With internal gear slewing ring and slewing reducer, slewing gear possesses the advantages of great load capacity and high accuracy to ensure the stability and accuracy of slewing. Slewing can realize stepless speed regulation varying from 0 to 3r/min.The slewing gear can be locked by two mechanical locking devices in front of the slewing table.

Traveling mechanismIt adopts double-motor and double-reducer. Two sets of control levers respectively control two tracks traveling to realize straight-line traveling, one-sided steering, differential steering, spot turn and traveling with load etc., which ensure the crawler crane has great mobility and flexibility.Traveling speed: 0 1.6km/hGradeability: 40 .Tension degree of track can be adjusted by jack. It is very quick, convenient and reliable.

Mast mechanism It consists of mast, pendant plate of mast self-assembly/dismantling pendant plate etc. It is used for self-assembly/dismantling of the crane. Before doing this work, the mast should be turned back to connect the pendant plate, disassemble and assemble the counterweight.The mast must be laid flat on the rear side of slewing table during traveling.

Counterweight and counterweight assembly/dismantling mechanismIt consists of two pieces of counterweight, mounting pin of counterweight, fixing chain etc. QUY50 crawler crane can realize self-assembly/dismantling of counterweigh.

Track telescoping mechanismThe track frame is connected with frame by outriggers, and its extending and retracting is driven by telescoping cylinder. The telescoping cylinder is mounted inside the track frame and its two ends are connected to track frames.

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3 Systems 5 Operator s cab

It adopts all-steel structure. Its four sides are made of hardened

glass, and the roof and the front window are furnished with

laminated glass. It is equipped with right sun visor, adjustable

seat, wiper, electric control handles, load moment display,

digitized display, auxiliary remote control box operation

assembly of switches, air conditioner, fan, illumination lamp,

radio (it can be equipped with CD player or DVD player),

cigarette lighter, fire extinguisher etc. It provides wide vision,

spacious and comfortable space for operator.

6 Hook

50 t hook with 5 sheaves

16 t hook with 1sheave (optional)

6 t hook without sheave

4 Safety equipment

QUY50 6QUY505

Load moment limiter It consists of load moment display and digital LCD. When actual load moment reaches 90% of rated load moment, the warning lamp lights up and the buzzer alarms; when it reaches rated load moment, the crane stops working automatically to prevent accidents from occurring due to overload during operation and ensure normal and safe work.It displays following data:Moment ratioElevation angle of main boom Main boom lengthWorking radius Actual loadPermissible lifting loadMax. permissible lifting height

Hydraulic systemThe overflow valves in the hydraulic system can restrain abnormal high pressure in loop to prevent hydraulic oil pump and hydraulic motor from being damaged and prevent hydraulic system from overloading.

Hoisting limiter Prevent hook from lifting excessively and avoid accidents occurring.

Boom angle indicatorIt is mounted at the lower rear side of foot section (namely the right side of operator s cab). The driver can observe the elevation angle of boom clearly from the cab.

Motion limiterThe system can ensure that the angle of actuating arm is within the specified range.

Level sensor of the complete vehicleDetect the level state of the complete vehicle.

Anti-unhook device Prevent load from falling off from the hook when lifting.

Ratchet locking mechanism of luffing gear Prevent luffing gear from sliding down because of long time parking.

Over-wind and over-release protection device for wire rope

Anemoscope

Hydraulic systemHydraulic system consists of main pump, control valve, hydraulic motor, hydraulic oil tank and cooler etc. Hydraulic system adopts advanced pump control system in the world and its main components have advantages of high efficiency, energy-saving, high reliability and long service life.Main hydraulic pump: driven by engine.Slewing pump is imported from Germany.Oil source of auxiliary mechanism: gear pump.Main control valve: pilot electro-hydraulic control valveControl method of main loop: variable displacement main pump+ main reversing valve. They are both controlled by two operating handles.Cooler: aluminium radiator with electric fan.

Electrical systemThis system with 24V DC and earth negative, has two 195 AH accumulators.It mainly includes power, engine start, engine shut-down, indicator light, annunciator, illumination, fan, wiper, horn, hoisting limiter, hydraulic oil cooling fan, digitized display, PLC controller, preheating device for engine and safety equipment etc, which ensure safe operation and excellent working environment of the crane. The complete vehicle adopts CAN-bus technology, which connects with PLC controller and digitized display efficiently, and possesses trouble detecting and self-diagnosis function.

Power systemDongfeng Cummins Engine: in-line six cylinder, supercharged, water-cooling engine Rated power/rotational speed: 132kw/2200r/minMax. torque/rotational speed :750Nm/1300r/minFuel tank capacity is 300L which ensures long working hours of engine.Emission standard: comply with the standard of U.S. and EU Stage 2

Centralized display system Large LCD possesses the function of Multilanguage display and can display operating signals collected by PLC controller, such as revolutions of engine, water temperature, fuel pressure, hydraulic pump pressure, pressure of main motors and operating level of basic machine etc. It can monitor working state in real time and give out a yellow or red warning signal when the working state of crane is abnormal.

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Tech

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QUY507 QUY50 8

Entire self-assembly dismantling function

Take self-assembly/dismantling under fixed fly jib operating condition for example

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QUY509 QUY50 10

1 Main boom lifting performance

Main boom lifting height curve

Note:

1. The lifting loads in the table include the weight of hook and the weight of wire rope between boom head and hook.

2. When lifting load with runner, the lifting capacity is the same as that of main boom with the same length at the same working radius.

Main boom load rating chart (1)

Liftin

g heig

ht(m

)

Working radius(m)

Main boom length

number of

linesworking radius

lifting p

erfo

rmance

liftin

g p

erf

orm

ance

QUY5011 QUY50 12

2 Fly jib lifting performance

Fly jib lifting height curve

Diagram of main boom + fly jib lifting height curve (The angle of axial line of main boom to the axial line of fly jib is 10 .)

Diagram of main boom + fly jib lifting height curve (The angle of axial line of main boom to the axial line of fly jib is 30 .)

Liftin

g heig

ht(m

)

Working radius(m)

Liftin

g heig

ht(m

)

Working radius(m)

lifting

pe

rform

an

ce

liftin

g p

erf

orm

an

ce

QUY50 14QUY5013

Fly jib load rating chart

main boom length

fly jiblength

working radius

main boom length

fly jiblength

working radius

Fly jib load rating chart

lifting

pe

rform

an

ce

liftin

g p

erf

orm

an

ce

QUY50 16QUY5015

main boom length

fly jiblength

working radius

main boom length

fly jiblength

working radius

Fly jib load rating chart Fly jib load rating chart

lifting

pe

rform

an

ce

liftin

g p

erf

orm

an

ce