QY50K Hydraulic mobile crane

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Introduction
* Outlook design obtained the State patent No.(ZL01317793.1)?
* Hydraulic system obtained the State patent No.(ZL01237657.4)?
* QY50KWith a max.lifting load of 50 t at 3.0 m working radius, the crane has a boom of 5 sections which are of large arc hexagon profile and 2 side jibs. The gravity center is lower ensuring good stability and high travelling speed. It is of high manuvrbility and can be used in various working occassions.
* Derikking with a single front cylinder AF,double indepandantwinchs,pilot liquid proportion control system enabling micro-movement and easy operation.
* Full and spacious cabin with good eyeview,adjustable seat ensuring comfortness.Air coditioner and heater may be installed in case of need.
* Steyr environment friendly enging Model WD615.67A which meets the National omission standard GB17691-1999(Europ standard)
* Operation cab designed egnomically enabling long time operation without being felt tyred.
Pilot liquid proportion control system enabling easy operation of all jobs
* New LCD superviser shows all kind of work.all switchs are easy to approach enabling operation safty.
* High performance balance valve made with international technology and imported adapters enable stable and reliable operation.
* Hydraulic valve sets are designed with integrated mould block enabling little pressure loss,high efficiancy and reliablity.
* Swing system has the free slewing machanism which is cotrolable.Closed brake and buffer valve which realizes stable micro-movement.
* Complete security fittings: Automatic moment limitor,kick-out units for over-rolling and over-releasing,ensuring high safty for operation.
* The world's first class hydraulic units can be fixed as option
* Air conditioner and heater, cold starter and high plateau fittings can be chosen as option.
Technical data in travel state
Demenssions
Overall length (mm) 12950
Overall width (mm) 2750
Overall height (mm) 3350
Wheel base
1st (mm) 1520
2nd(mm) 3815
3rd(mm) 1350
Track
1st (mm) 2240
2nd (mm) 2055
Weight
Dead weight in travel state (kg) 38580
Axle load
1st axle(kg) 12950
2nd axle(kg) 25630
Power
Model of engine Steyr WD615.67A Cummune MII-C290
Engine rated outputkW(r/min) 206/2200 216/2100
Rated torque N.m(r/min) 1100/1400 1200/1400
Rated turning speed (r/min) 2200 2100
Travel
Travl speed
Max.travel speed (km/h) 66 63
Min. speed(km/h) 2.7 4.3
Turning diameter
Min.turning diameter (m) 24 24
Min.turning diameter at boom tip (m) 26.8 26.8
Min. groun clearance(mm) 285 285
Approach angle 16° 16°
Departure angle 11° 11°
Braking distance(at30km/h) ≤10 ≤10
Max.ggradabilit 27% 28%
Fuel consumption (L) ~32 ~32
Lifting performance
Max.total rated lifting load (t) 50
Min. working radius (m) 3
Turning radius at swing table tail(mm) 3482
Max.load moment
Base boom(kN.m) 1739.5
Full_extent boom(kN.m) 617.4
Outrigger extension distance
Longitudinal(m) 5.65
Lateral (m) 6.6
Lifting height
Base boom (m) 10.7
Full-extent boom(m) 40
Full-extent boom+jib(m) 55.8
Boom length
(m) 10.7
Full-extent boom(m) 40.1
Full-extent boom+jib(m) 55.1
Attaching angle for jib 0°15°30°
Workng speed parameter
Boom elevating time
Full lifting(s) 88
Full falling (s) 60
Boom telescoping time
Full extending (s) 180
Full retracting(s) 140
Max.slewing speed(r/min) 2
Outrigger telescoping time
Outrigger beam extending synchronously(s) 30
Outrigger beam retracting synchronously (s) 20
Outrigger jack extending synchronously(s) 35
Outrigger jack retracting synchronously (s) 30
Hoisting speed(single rope)
Main winch with full load (m/min) 85
Main winch without load(m/min) 110
Auxiliary winch with full load(m/min) 85
Auxiliary winch without load (m/min) 110
Sound level outside cabin dB(A) ≤118
Sound inside cabin dB(A) ≤90

Technical data for lifting operation
Total rated lifting load for boom Table 1
Working radius
(m)		 Without the 5th outrigger,boom at the side of rear:or with the 5th ourigger,360 swing
base boom10.70m Mid-length boom18.05m Mid-length boom25.40m Mid-length32.75m Full retracting40.10m
Lifting load
(kg)		 Hoisting height
(m)		 Lifting load
(kg)		 Hoisting height
(m)		 Lifting load
(kg)		 Hoisting hight
(m)		 Hoisting load
(kg)		 Hoisting hight
(m)		 Lifting load
(kg)		 Hoisting hight
(m)
3 50000 10.75
3.5 45300 10.51 30000 18.37
4 41500 10.23 27000 18.22
4.5 38300 9.91 25500 18.05 18000 25.70
5 35500 9.56 24700 17.87 18000 25.57
5.5 30300 9.16 22800 17.67 16700 25.44
6 25600 8.71 21000 17.45 15900 25.29 10800 32.90
7 19200 7.59 18000 16.96 14400 24.96 10000 32.65
8 15000 6.06 14600 16.39 13100 24.58 9300 32.36 7000 39.97
9 12100 3.39 11800 15.73 12000 24.16 8600 32.04 6500 39.72
10 9500 14.97 10600 23.68 7500 31.69 5700 39.43
12 6800 13.05 7700 22.55 6600 30.87 5000 38.78
14 4800 10.35 5800 21.17 5800 29.88 4500 38.01
16 3400 5.65 4400 19.47 4800 28.72 3900 37.11
18 3300 17.35 3800 27.35 3300 36.07
20 2500 14.62 3000 25.75 2900 34.89
22 1800 10.78 2300 23.87 2600 33.53
1800 21.62 2100 31.99
3100 18.87 1600 30.24
15.34 1200 28.22
900 25.88
Multipal time 12 8 5 4 3
Hook weight 515kg
Min.elevating angle for boom 16.36° 17.02° 24.11° 34.21° 39.28°
Max.elevating angle for boom 68.95° 76.16° 77.93° 77.99° 77.30°

Lifting load for jibs Table 2
Elevating angle for boom
(°)		 Boom40.1m
Offset angle
0° 15° 30°
Jib8.5m Jib15m Jib8.5m Jib15m Jib8.5m 15m
Lifting load(kg) Lifting load(kg) Lifting load(kg) Lifting load(kg) Lifting load(kg) Lifting load(kg)
78 4000 2000 2700 1400 2440 1100
75 3600 2000 2500 1200 2300 1000
72 3200 1800 2300 1150 2200 990
70 2900 1700 2200 1100 2100 950
65 2300 1400 1900 950 1900 880
60 1800 1200 1600 880 1500 830
55 1000 800 900 700 850 600
50 450 400 350
with hook block for 4 t100kg
Notes;
(1)The data in the table are the max.lifting capacity when the crane is set up on level and firm ground.
(2)The total rated lifting load in the table includes weight of hook block and slings.
(3)The working radius in the table is the actual value including boom deflection under load.
(4)Wind pressure125N/m2The crane can still be used when the wind reaching grade 7.
(5)Lifting rated load of single top of the crane
Length
(m)		 10.7 18.05 25.40 32.75 40.10
Hoisting load 4000 The hoisting load is 4000kg at working dadius of 3.5-14m, the else is the same as the lifting performance in the table when boom length is 18.05m,working radius 16m. The hoisting load is 4000kg when working radiue is 4.5-16m,the else are the same as the performance which are under the condition of boom length 25.4m, working radius 18-22m The hoistingload 4000kg at working radius of 6-16m,the else are the same as the performance in the table when boom length 32.75m,working radius 8-14m The hoisting load is 4000kg when working radius 8-14m. The else are the same as the performace under the condition in the table when boom length 40.1m ,working radius 16-30m

 
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