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1106326 1106331
YASSIAN or Your's
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Crane bearing configuration
The following are the core technical points of crane bearing configuration, which will be elaborated in combination with the three key parts of slewing bearings, traveling mechanisms and lifting systems
I. Bearing Configuration Plan for Key Parts
1. Youdaoplaceholder0 slewing bearing system
Youdaoplaceholder0 Bearing type : large slewing bearing (outer diameter up to 32 meters)
Youdaoplaceholder0 Core function :
Support the 360° rotation of the upper vehicle body, bearing the self-weight of the entire machine and the overturning moment (the anti-deformation capacity needs to reach the thousand-ton level)
The mining crane needs to be customized with a three-row roller structure, and the roller diameter should be increased by 10% to cope with the impact load
Youdaoplaceholder0 Sealing design : Dual protection of labyrinth type and rubber lip seal, dust-proof efficiency > 95%
2. Youdaoplaceholder0 traveling wheelset
Youdaoplaceholder0 hub bearing : self-aligning roller bearing (such as 22230 series)
The shaft diameter is 150mm, capable of withstanding the jolting vibration and radial impact of the tracks
Surface carburizing treatment (hardness 60-62 HRC) delays fatigue spalling
Youdaoplaceholder0 configuration points :
700-ton wheelsets are equipped with 32224 tapered roller bearings, with preload clearance of 0.08-0.12mm
Dual protection: rubber sealing cover (suffix 2RS) + metal dust cover
3. Youdaoplaceholder0 hoisting mechanism
Youdaoplaceholder0 drum bearing : cylindrical roller bearing (NU series)
The standard configuration of the 500-ton drum set is 3522 type (22222), with a 40% increase in radial load-bearing capacity
Youdaoplaceholder0 hook pulley :
The 32-ton hook assembly is equipped with 6226 deep groove ball bearings and 51228 thrust ball bearings
The grease lubrication cavity is designed with independent sealing to bear the tension of the steel wire rope in both directions
Ii. Enhanced Design for Special Working Conditions
Youdaoplaceholder0 heavy-load impact resistance
The outer ring of the bearing of the mining crane wheel set is thickened (wall thickness +15%), and the quenching depth of the raceway reaches 5mm
Youdaoplaceholder0 low-temperature adaptability
In high-cold regions, wide-temperature lubricating grease (-40℃ to 120℃) should be selected to avoid low-temperature curing
Youdaoplaceholder0 installation accuracy control
The flatness of the slewing bearing installation is ≤0.15mm/m, and the deviation of the bolt preload is ±5%
Iv. Direction of Technological Evolution
Youdaoplaceholder0 Intelligent monitoring : Vibration sensors predict raceway spalling (such as early failure of slewing bearings)
Youdaoplaceholder0 Lightweight : Ceramic hybrid bearings reduce weight by 20%, enhancing dynamic response speed
Youdaoplaceholder0 Integrated design : The flanged hub unit integrates a temperature sensing module, reducing maintenance costs by 40%
v
Crane bearing configuration
The following are the core technical points of crane bearing configuration, which will be elaborated in combination with the three key parts of slewing bearings, traveling mechanisms and lifting systems
I. Bearing Configuration Plan for Key Parts
1. Youdaoplaceholder0 slewing bearing system
Youdaoplaceholder0 Bearing type : large slewing bearing (outer diameter up to 32 meters)
Youdaoplaceholder0 Core function :
Support the 360° rotation of the upper vehicle body, bearing the self-weight of the entire machine and the overturning moment (the anti-deformation capacity needs to reach the thousand-ton level)
The mining crane needs to be customized with a three-row roller structure, and the roller diameter should be increased by 10% to cope with the impact load
Youdaoplaceholder0 Sealing design : Dual protection of labyrinth type and rubber lip seal, dust-proof efficiency > 95%
2. Youdaoplaceholder0 traveling wheelset
Youdaoplaceholder0 hub bearing : self-aligning roller bearing (such as 22230 series)
The shaft diameter is 150mm, capable of withstanding the jolting vibration and radial impact of the tracks
Surface carburizing treatment (hardness 60-62 HRC) delays fatigue spalling
Youdaoplaceholder0 configuration points :
700-ton wheelsets are equipped with 32224 tapered roller bearings, with preload clearance of 0.08-0.12mm
Dual protection: rubber sealing cover (suffix 2RS) + metal dust cover
3. Youdaoplaceholder0 hoisting mechanism
Youdaoplaceholder0 drum bearing : cylindrical roller bearing (NU series)
The standard configuration of the 500-ton drum set is 3522 type (22222), with a 40% increase in radial load-bearing capacity
Youdaoplaceholder0 hook pulley :
The 32-ton hook assembly is equipped with 6226 deep groove ball bearings and 51228 thrust ball bearings
The grease lubrication cavity is designed with independent sealing to bear the tension of the steel wire rope in both directions
Ii. Enhanced Design for Special Working Conditions
Youdaoplaceholder0 heavy-load impact resistance
The outer ring of the bearing of the mining crane wheel set is thickened (wall thickness +15%), and the quenching depth of the raceway reaches 5mm
Youdaoplaceholder0 low-temperature adaptability
In high-cold regions, wide-temperature lubricating grease (-40℃ to 120℃) should be selected to avoid low-temperature curing
Youdaoplaceholder0 installation accuracy control
The flatness of the slewing bearing installation is ≤0.15mm/m, and the deviation of the bolt preload is ±5%
Iv. Direction of Technological Evolution
Youdaoplaceholder0 Intelligent monitoring : Vibration sensors predict raceway spalling (such as early failure of slewing bearings)
Youdaoplaceholder0 Lightweight : Ceramic hybrid bearings reduce weight by 20%, enhancing dynamic response speed
Youdaoplaceholder0 Integrated design : The flanged hub unit integrates a temperature sensing module, reducing maintenance costs by 40%
