Rail Concrete Sleeper Dynamic and Static Fatigue Testing Machine

Rail sleeper fatigue testing machine Concrete Sleeper Dynamic and Static Fatigue Testing Machine

A new pulsating fatigue test system specially designed and developed. The large-displacement hydraulic station adopts multi-channel synchronous loading or single-channel independent loading according to the actual requirements of the fatigue test technical conditions, achieving multi-functional, high-efficiency, energy-saving operation and green environmental protection effect.

The working principle is “electric-mechanical-hydraulic” energy conversion system. The design concept is ingenious, the principle is scientific, the structure is reasonable, the performance is stable, the operation is reliable, the low energy consumption, the low noise, the normal temperature operation, the water consumption without water cooling operation is only equivalent to the same. One-twentieth of the electro-hydraulic servo fatigue test system with specifications and performance, the energy-saving effect is very remarkable. It is a large-scale heavy-duty fatigue test equipment with real energy saving and environmental protection. It has unique advantages in the field of low-frequency large-amplitude fatigue testing in large loads. Engineering structure electro-hydraulic pulsation fatigue test system has large bearing capacity, high dynamic load coefficient, fast frequency response, large amplitude, low power consumption, no water cooling, high reliability, low operating cost, easy operation, easy maintenance, and wide application fields. And so remarkable features.

1. Main uses The electro-hydraulic pulsation fatigue test system of engineering structure is mainly used for large parts, building structural parts and full-scale test pieces.

Mechanical properties and fatigue life test, the system is equipped with corresponding test loading attachments to achieve typical concrete or steel structural parts such as beams, columns, plates, frames, bridges, steel trusses, rubber bearings, railway fastener assembly, steel Stranded anchors, cables, large variant springs, spreaders, rigging, ring joints, rails and their welded joints, sleepers, track panels, chassis, front and rear axles,

Dynamic and static load performance tests and fatigue life tests of springs, locomotive bogies, large diameter finish rolled rebars, highway pavement structures, etc.

Main Specifications:

1 system maximum static test force: 500kN;

2 system maximum dynamic test force: 500kN;

3 static test force value accuracy: ±1%;

4 dynamic test force fluctuation: ≤ 2% Fs;

5 system maximum working amplitude: 30mm / 500kN;

6 system maximum working pressure: 19MPa;

7 maximum displacement measurement range: 200mm;

8 displacement measurement accuracy: Infinite resolution repeatability ± 0.002% FS indication accuracy ± 0.02% FS;

9 working frequency range: frequency control 2-8Hz;

10 pulsating hydraulic station maximum pulsation displacement: stepless continuously adjustable, 800ml / stroke;

11 spindle speed control:

11.1 Frequency conversion rated power: 22kW;

11.2 Output frequency: 0-400Hz;

11.3 asynchronous motor speed ratio: 1:100;

11.4 Speed control accuracy: ±0.5%;

11.5 speed fluctuation: ±0.5%;

12 pulse displacement measurement indication: proprietary anti-jamming pulse displacement electromagnetic measurement digital display technology, maximum capacity 103;

13 test times of measurement and control: anti-interference electromagnetic measurement read-only technology 1 time / turn; maximum capacity 108, preset shutdown, automatic storage of power failure;

14 pulse hydraulic station main motor power: 22kW;

15 pulsating hydraulic station main motor running actual power: (actual unit time power consumption measured value) <15kW;

Considering the frequency response of the pumping station displacement under the same load, the same stress amplitude, and the same amplitude, that is, considering the efficiency and period of the fatigue test, the electro-hydraulic pulsation fatigue test system is 1/20 of the power consumption of the equivalent electro-hydraulic servo fatigue test system;

16 lubricating oil pump motor power: high speed gear oil pump motor unit 1.5kW;

17 working oil pump motor unit power: RK-38 radial piston pump motor unit 1.5kW;

18 500kN actuator:

6.18.1 The latest design high response low damping double pressure one-way pulsation loading, self-lubricating gap sealing high speed linear actuator, using high strength alloy cylinder, high wear resistant low friction centrifugal casting alloy cylinder liner, alloy cylinder high hardness piston rod , precision manufacturing process; installation of high precision linear displacement sensor;

18.2 Maximum static test force: 500kN accuracy: 10% FS from each point ± 1%;

18.3 Maximum dynamic test force: 500kN dynamic indication fluctuation: ≤ ± 2% FS;

18.4 Maximum stroke of the piston rod: 120mm;

18.5 Maximum working vibration amplitude: (single actuator theoretical value) 30mm/5000kN;

18.6 actuator screw maximum adjustment: 400mm;

18.7 piston rod stroke protection: displacement indication adjustable limit switch;

18.8 Maximum working system pressure: 19MPa;

19 Test load deviation protection: The software system is set autonomously and automatically stops when the protection threshold is triggered;

20 Lubrication fault alarm: Automatic shutdown when the lubrication system loses pressure;

21 high-pressure oil circuit: the high-pressure hose assembly and the seamless oil pipe main oil circuit connection form, high-pressure shut-off valve circuit control;

8.2 Party A shall provide the necessary working conditions for the installation and commissioning of the equipment, and cooperate with Party B to complete the installation and commissioning of the equipment.

8.3 Party A factory environment:

8.3.1 not less than 5 tons of driving;

8.3.2 Equipment voltage grade AC380V, power 50KW, three-phase five-wire power supply is strictly prohibited to share the neutral line and ground line, and must have a dedicated grounding line;

8.3.3 Power fluctuation range: 380V ± 10%; frequency 50Hz ± 3%;

8.3.4 Ambient temperature requirements: 10-30 ° C; humidity: less than 90%.