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The rail fastening system test bench is based on the technical requirements of high-speed railway fastening system and rail transit fastening system mechanical performance, and according to China Academy of Railway Sciences High-speed Railway Track Technology State Key Laboratory, China Railway Inspection and Certification Center’s successful application experience of national rail transit test institutions such as railway construction inspection stations, has optimized the combined design of microcomputer controlled electro-hydraulic servo loading technology and electro-hydraulic pulsating fatigue loading technology. It’s the latest research and development with high efficiency, high precision, high reliability, ultra-high performance. It’s also energy-saving, environmentally friendly railway fastener system performance test equipment.
This is system is mainly used in the laboratory for static stiffness, buckling pressure, longitudinal resistance and fatigue performance tests of high-speed railways, ordinary speed railways, and urban rail transit fastening assembly systems, static, dynamic stiffness, and fatigue of under-rail pads (elastic cushions) test, screw anchor test and other items.
The rail fastening system test bench is based on the technical requirements of high-speed railway fastening system and rail transit fastening system mechanical performance, and according to China Academy of Railway Sciences High-speed Railway Track Technology State Key Laboratory, China Railway Inspection and Certification Center’s successful application experience of national rail transit test institutions such as railway construction inspection stations, has optimized the combined design of microcomputer controlled electro-hydraulic servo loading technology and electro-hydraulic pulsating fatigue loading technology. It’s the latest research and development with high efficiency, high precision, high reliability, ultra-high performance. It’s also energy-saving, environmentally friendly railway fastener system performance test equipment.
This is system is mainly used in the laboratory for static stiffness, buckling pressure, longitudinal resistance and fatigue performance tests of high-speed railways, ordinary speed railways, and urban rail transit fastening assembly systems, static, dynamic stiffness, and fatigue of under-rail pads (elastic cushions) test, screw anchor test and other items.
Mainly includes:
1 hydraulic pressure and pulsation fatigue combined loading hydraulic station
1 casting test platform
2 sets of dynamic and static loading gantry frames
1 250kN unidirectional pulsation fatigue loading actuator
2 sets of 150kN tension and pressure bidirectional servo loading actuators
1 set of pulsating fatigue load control system
1 set of static load servo control system
1 set of test force measurement and data acquisition system
1 set of dynamic and static stiffness displacement measurement sensors
1 set of tools ( Direct displacement measurement method of 4 points)
Mainly includes:
1 hydraulic pressure and pulsation fatigue combined loading hydraulic station
1 casting test platform
2 sets of dynamic and static loading gantry frames
1 250kN unidirectional pulsation fatigue loading actuator
2 sets of 150kN tension and pressure bidirectional servo loading actuators
1 set of pulsating fatigue load control system
1 set of static load servo control system
1 set of test force measurement and data acquisition system
1 set of dynamic and static stiffness displacement measurement sensors
1 set of tools ( Direct displacement measurement method of 4 points)
Main Specification:
1, Electro-Hydraulic Pulsating Fatigue Loading System
Maximum test force of fatigue system | 250KN |
Test force accuracy | ± 1% |
Dynamic test force fluctuation | ≤ 2% Fs |
Maximum dynamic working amplitude-frequency | 60mm / 4Hz |
Maximum system working pressure | 20MPa |
Maximum displacement measuring range | 150mm |
Displacement measuring accuracy | Resolution better than 0.01mm Repeat accuracy of ± 0.01mm Display accuracy ± 1% |
working frequency range | Stepless continuously adjustable 2-8Hz |
Maximum pulsating displacement | Stepless continuously adjustable 800ml / c |
Main spindle speed control | Variable frequency stepless speed Stable speed accuracy of 0.1% Speed change rate of 0.1% Speed measuring accuracy of 1rpm |
Testing times measuring | Anti-interference electromagnetic technology 1time / rev; Maximum capacity 108 Preset shutdown, automatic storage if power cut |
Hydraulic station main motor power | 22kW |
Fatigue testing channels | 5channels (can perform single-point or multi-point simultaneous fatigue tests) |
** Remark: 250KN Actuator to be consulted separately
2, Electro-Hydraulic Servo Static Load Two-Way Loading System
Maximum static test force | 150kN |
Test force accuracy | ± 0.5% (10-100% Fs) |
Test force resolution | ± 200000 yards |
Maximum stroke | ± 75mm Display accuracy: 0.5% FS |
Loading speed range | 50-600kN / min |
Actuator structure | Uniform cross-section piston, double rod, double action of tension and compression, equip with universal hinge; |
3, Electro-Hydraulic Servo Control System
Displacement resolution | 0.001mm |
Displacement measurement range | ± 5mm (total stroke 10mm) Resolution ± 0.001mm Accuracy not less than 0.005mm; |
Installation method of displacement meter | Magnetic base fixture |
Displacement/deformation sensor acquisition card | 4 channels |
Connectors and signal cables | 4 sets |
Servo system control mode | Closed-loop control mode of force, displacement and deformation, can be switched smoothly; |
Accuracy of testing force at constant speed rate | ± 1% of setting value |
Accuracy of constant testing force | ± 1% of setting value |
Accuracy of displacement at constant speed rate | ± 1% of setting value |
Accuracy of constant displacement | ± 1% of setting value |
Maximum sampling frequency | 100MHz |
Controller A / D, D / A resolution | 16 bits |
With test parameter limit protection function. | |
4, Loading Frame
Casting platform size | Around 4000 × 2000 × 300 |
Gantry frame size | Around 2000 × 550 × 3000 |
Actuator installation form | hanging type |
Test specimen installation form | horizontal |
Main Specification:
1, Electro-Hydraulic Pulsating Fatigue Loading System
Maximum test force of fatigue system | 250KN |
Test force accuracy | ± 1% |
Dynamic test force fluctuation | ≤ 2% Fs |
Maximum dynamic working amplitude-frequency | 60mm / 4Hz |
Maximum system working pressure | 20MPa |
Maximum displacement measuring range | 150mm |
Displacement measuring accuracy | Resolution better than 0.01mm Repeat accuracy of ± 0.01mm Display accuracy ± 1% |
working frequency range | Stepless continuously adjustable 2-8Hz |
Maximum pulsating displacement | Stepless continuously adjustable 800ml / c |
Main spindle speed control | Variable frequency stepless speed Stable speed accuracy of 0.1% Speed change rate of 0.1% Speed measuring accuracy of 1rpm |
Testing times measuring | Anti-interference electromagnetic technology 1time / rev; Maximum capacity 108 Preset shutdown, automatic storage if power cut |
Hydraulic station main motor power | 22kW |
Fatigue testing channels | 5channels (can perform single-point or multi-point simultaneous fatigue tests) |
** Remark: 250KN Actuator to be consulted separately
2, Electro-Hydraulic Servo Static Load Two-Way Loading System
Maximum static test force | 150kN |
Test force accuracy | ± 0.5% (10-100% Fs) |
Test force resolution | ± 200000 yards |
Maximum stroke | ± 75mm Display accuracy: 0.5% FS |
Loading speed range | 50-600kN / min |
Actuator structure | Uniform cross-section piston, double rod, double action of tension and compression, equip with universal hinge; |
3, Electro-Hydraulic Servo Control System
Displacement resolution | 0.001mm |
Displacement measurement range | ± 5mm (total stroke 10mm) Resolution ± 0.001mm Accuracy not less than 0.005mm; |
Installation method of displacement meter | Magnetic base fixture |
Displacement/deformation sensor acquisition card | 4 channels |
Connectors and signal cables | 4 sets |
Servo system control mode | Closed-loop control mode of force, displacement and deformation, can be switched smoothly; |
Accuracy of testing force at constant speed rate | ± 1% of setting value |
Accuracy of constant testing force | ± 1% of setting value |
Accuracy of displacement at constant speed rate | ± 1% of setting value |
Accuracy of constant displacement | ± 1% of setting value |
Maximum sampling frequency | 100MHz |
Controller A / D, D / A resolution | 16 bits |
With test parameter limit protection function. | |
4, Loading Frame
Casting platform size | Around 4000 × 2000 × 300 |
Gantry frame size | Around 2000 × 550 × 3000 |
Actuator installation form | hanging type |
Test specimen installation form | horizontal |
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