• 20tons Rough Terrain Crane Qry20
  • 20tons Rough Terrain Crane Qry20
  • 20tons Rough Terrain Crane Qry20

20tons Rough Terrain Crane Qry20

Certification: GS, RoHS, CE, ISO9001
Condition: New
Maximum Lifting Height: >40m
Maximum Lifting Weight: >16t
Shaft Number: 3
Crane Jib: Three-Arm
Customization:

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Basic Info.

Model NO.
QRY20
Type
Straight Arm
Max.Total Rated Lifting Load
20t*3m
Boom
10-31m
Fully-Extended Boom+Jib
31m
Weight
24tons
Max.Speed
40km/H
Max.Gradeablity(Tanq)
84%
Engine Power
140kw
Drivers Form
4X4
Min. Ground Clearance
400mm
Axle Base
3600mm
Transport Package
in Nude Package
Specification
CE
Trademark
KUDAT
Origin
China
HS Code
8704230002
Production Capacity
600units/Year

Product Description

Chapter 2: Brief introduction of QRY20
RT20 rough terrain crane is a kind of telescopic boom and swing type crane which travels with tire type chassis. It is composed of the superstructure and undercarriage. The superstructure is the lifting part, composed of the telescopic boom, jib, main winch, aux. winch, luffing mechanism, counterweight, swivel table, etc. The undercarriage is composed of the suspension and walking part. The superstructure and the undercarriage are connected by the slewing bearing.
Chapter 3: Main features of QRY20
1. Front-wheel steering, rear wheel steering, four wheel steering and crab steering, all wheel drive, off-road
performance, suitable for off-highway travel.
2. The axle adopts Meritor axle
3. The gearbox adopts the Advance brand.
4. Service brake adopts Double circuits air braking system; Parking brake adopts air bleed bellow braking system.
5. Fully extended outriggers operation, with semi-stretch outriggers operation, without outriggers operation and traveling with load operation can be realized.
6. Suitable for narrow space travel and operations; small turning radius; strong maneuverability.
7. Safe and reliable control system, two seats or one seat can be optional, all-directional lifting operation,
  greatly enhanced the ability of the front lifting.
8. The crane has good traffic-ability, dynamic performance and mobility, and is able to operate in every direction and travel while hoisting without outriggers. The product is widely used in heavy lifting operations, short distance transfer, narrow-site lifting operations for construction sites, outdoor oilfields, warehouses, freight yards, logistics basses and other sites.
Chapter 4: Safety device of QRY20
 Safety device includes torque limiter, swing table lock device, winch over-winding and over-relaxation protect device, outrigger lock device, outrigger bidirectional hydraulic lock, rear axle steering lock and rear wheel return detector, emergency steering power device, gradienter, hydraulic system overflow valve, balance valve.
1) Torque limiter
 Detecting function: Detect the angle of the boom automatically.
 Display function: Show operating information such as actual load, handling radius, boom angle.
 Caution function: When the actual load exceeds rated lifting load, torque limiter will give an alarm and stop the operation.
2) Swing table lock device
  During the driving process, a plug device is used to connect the swing table and the carrier to keep the steering parts (swing table, boom) from swing caused by inertia.
3) Winch over-winding protect device 
  When the load reaches a certain height,torque limiter will stop the falling and indicating light on the instrument panel will be on.
4) Winch over-relaxation protect device
  When only 3 laps of rope is left on the winch, torque limiter will stop the falling and indicating light on the
  instrumentation board will be on.
5) Outrigger lock device
  During the driving process, a plug device is used. By plugging the outrigger, the device deeps it from extending.
6) Outrigger bidirectional hydraulic lock
  Outrigger bidirectional hydraulic lock is used to insure the horizontal and vertical cylinder will not
  automatically retract when outriggers are in the extending state .
7) Rear axle steering lock and rear wheel return detector
  During the driving process, only front axle steering is needed and the rear should be returned aligned. For this reason a lock device is used and indicating light on the instrumentation board shows the status.
8) Emergency steering power device (emergency pump)
  If there is an emergency that the engine can not be started, the crane can be dragged by other vehicles. The emergency pump is driven by battery and supplies power to power cylinder.
 
Chapter 5: Technology parameter of QRY20
Table 5-1 QRY20 Main technical parameters table in travel state
Category Items Units Parameters
Outline Dimension
Parameters
Overall length mm 12000
Overall width mm 2750
Overall height mm 3650
Axle base mm 3600
Tread mm 2250
Weight Parameters Dead weight in travel state Kg 24000
Axle load Front axle Kg 12650
Rear axle Kg 11350
Power Parameters Engine rated output Kw/(r/min) 140/2200
Engine rated torque N.m(r/min) 760/1400~1600
Travel Parameters Travel speed Max. travel speed Km/h 40
Min. stable travel speed Km/h 9.65
Turning radius Min. turning radius m 3.23
Min. turning radius of boom head m 315
Min. ground clearance mm 18
Approach angle ° 18
Departure angle ° ≤8.5
Braking distance (at 30km/h) m 50
Max. grade ability % 84
Max. outside noise during accelerating dB(A) 12650
 
Table 5-2 QRY20 Main Technical Parameters Table in Lifting State
Category Items Unit Parameters
Main Performance Parameters Max. total rated lifting load t 20
Min. rated working radius m 3
Max. load moment Base boom KN.m 697
Fully-extended boom KN.m 552
Outrigger span Longitudinal m 5.83
Lateral m 5.6
Lifting height Base boom m 10
Fully-extended boom m 30.7
Boom length Base boom m 9.9
Fully-extended boom m 31.2
Working Speed Parameters Luffing time Boom raising time s 55
Boom descending time s 36
Boom telescoping time Boom fully-extended time s 80
Boom fully retracting time s 48
Max. swing/slewing speed r/min 2.0
Outriggers telescoping time Horizontal outriggers Extending synchronously s 16
Retracting synchronously s 11
Vertical outriggers Extending synchronously s 30
Retracting synchronously s 30
Hoisting speed (wire rope is at the 4th layer) Main winch Full load m/min 140
No load m/min 110
Auxiliary winch Full load m/min 140
No load m/min 90
20tons Rough Terrain Crane Qry20
20tons Rough Terrain Crane Qry20
20tons Rough Terrain Crane Qry20

 

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