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Chapter 2: Quick introduction of QRY20
RT20 rough terrain crane is a kind of telescopic increase and swing sort crane which travels with tire variety chassis. It is composed of the superstructure and undercarriage. The superstructure is the lifting element, composed of the telescopic growth, jib, main winch, aux. winch, luffing system, counterweight, swivel desk, etc. The undercarriage is composed of the suspension and wal ept part. The superstructure and the undercarriage are related by the slewing bearing.
Chapter 3: Primary attributes of QRY20
1. Front-wheel steering, rear wheel steering, 4 wheel steering and crab steering, all wheel push, off-street
performance, suited for off-highway journey.
two. The axle adopts Meritor axle
3. The gearbox adopts the ept brand.
4. Support brake adopts Double circuits air bra ept program Par ept brake adopts air bleed bellow bra ept program.
five. Totally extended outriggers procedure, with semi-stretch outriggers procedure, with out outriggers operation and touring with load operation can be recognized.
six. Suited for narrow place vacation and functions tiny turning radius robust maneuverability.
7. Secure and reliable management system, two seats or 1 seat can be optional, all-directional lifting operation,
greatly increased the capacity of the entrance lifting.
eight. The crane has good targeted traffic-capacity, dynamic efficiency and mobility, and is ready to work in every single course and vacation while hoisting without having outriggers. The solution is extensively used in weighty lifting operations, short distance transfer, slender-site lifting operations for design sites, outdoor oilfields, warehouses, freight yards, logistics basses and other internet sites.
Chapter 4: Safety gadget of QRY20
Safety system involves torque limiter, swing table lock gadget, winch over-winding and above-relaxation shield system, outrigger lock gadget, outrigger bidirectional hydraulic lock, rear axle steering lock and rear wheel return detector, unexpected emergency steering power device, gradienter, hydraulic program overflow valve, equilibrium valve.
one) Torque limiter
Detecting function: Detect the angle of the increase routinely.
Display purpose: Demonstrate operating details these kinds of as real load, dealing with radius, growth angle.
Caution function: When the real load exceeds rated lifting load, torque limiter will give an alarm and stop the procedure.
two) Swing desk lock unit
During the driving method, a plug gadget is used to hook up the swing desk and the carrier to maintain the steering components (swing desk, growth) from swing triggered by inertia.
three) Winch more than-winding safeguard device
When the load reaches a particular peak,torque limiter will stop the falling and indicating mild on the instrument panel will be on.
4) Winch above-rest defend gadget
When only 3 laps of rope is left on the winch, torque limiter will stop the falling and indicating mild on the
instrumentation board will be on.
five) Outrigger lock device
During the driving method, a plug device is utilised. By plugging the outrigger, the system deeps it from extending.
six) 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 point out .
7) Rear axle steering lock and rear wheel return detector
During the driving approach, only entrance axle steering is needed and the rear ought to be returned aligned. For this purpose a lock gadget is used and indicating light on the instrumentation board exhibits the status.
8) Emergency steering electrical power system (unexpected emergency pump)
If there is an emergency that the motor can not be commenced, the crane can be dragged by other vehicles. The emergency pump is pushed by battery and materials power to electricity cylinder.
Chapter 5: Technologies parameter of QRY20
Desk 5-1 QRY20 Main technical parameters desk in journey state
| Group | Items | Units | Parameters | ||
| Outline Dimension Parameters |
Overall duration | mm | 12000 | ||
| Overall width | mm | 2750 | |||
| Overall peak | mm | 3650 | |||
| Axle foundation | mm | 3600 | |||
| Tread | mm | 2250 | |||
| Weight Parameters | Dead bodyweight in journey 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 | |||
| Vacation Parameters | Travel velocity | Max. journey velocity | Km/h | forty | |
| Min. secure journey pace | Km/h | nine.65 | |||
| Turning radius | Min. turning radius | m | 3.23 | ||
| Min. turning radius of increase head | m | 315 | |||
| Min. ground clearance | mm | eighteen | |||
| Approach angle | ° | 18 | |||
| Departure angle | ° | ≤8.five | |||
| Bra ept length (at 30km/h) | m | 50 | |||
| Max. quality capability | % | eighty four | |||
| Max. outdoors sounds for the duration of accelerating | dB(A) | 12650 | |||
Desk 5-2 QRY20 Main Technical Parameters Table in Lifting Condition
| Category | Items | Device | Parameters | |||
| Major Overall performance Parameters | Max. whole rated lifting load | t | 20 | |||
| Min. rated wor ept radius | m | 3 | ||||
| Max. load minute | Base growth | KN.m | 697 | |||
| Fully-extended increase | KN.m | 552 | ||||
| Outrigger span | Longitudinal | m | five.83 | |||
| Lateral | m | five.6 | ||||
| Lifting top | Base growth | m | ten | |||
| Fully-prolonged increase | m | 30.7 | ||||
| Boom duration | Base growth | m | nine.nine | |||
| Fully-prolonged growth | m | 31.2 | ||||
| Wor ept Pace Parameters | Luffing time | Boom raising time | s | 55 | ||
| Boom descending time | s | 36 | ||||
| Boom telescoping time | Boom completely-extended time | s | 80 | |||
| Boom totally retracting time | s | forty eight | ||||
| Max. swing/slewing speed | r/min | two. | ||||
| Outriggers telescoping time | Horizontal outriggers | Extending synchronously | s | 16 | ||
| Retracting synchronously | s | eleven | ||||
| Vertical outriggers | Extending synchronously | s | thirty | |||
| Retracting synchronously | s | 30 | ||||
| Hoisting pace (wire rope is at the 4th layer) | Main winch | Total load | m/min | 140 | ||
| No load | m/min | one hundred ten | ||||
| Auxiliary winch | Entire load | m/min | a hundred and forty | |||
| No load | m/min | ninety | ||||
The use of unique gear manufacturer’s (OEM) portion quantities or logos , e.g. CASE® and John Deere® are for reference purposes only and for indicating merchandise use and compatibility. Our business and the shown substitution elements contained herein are not sponsored, accredited, oRotating methods can have enough rotating strength (inertia) to cause substantial device harm for the duration of a jam-up or program crash. This inertia differs based on the RPM and rotating mass for every software. A substantial mass sluggish speed (RPM) could do far more damage than a substantial pace software throughout a crash. A torque limiter is fundamentally a mechanical fuse utilized to shut down the equipment and enable the rotating power to dissipate with no triggering extreme damage.r produced by the OEM.
