This machine is used to simulate the phenomenon that the front wheel of a bicycle leaves the ground, is impacted or vibrated during riding, and the frame and front fork will be subjected to a certain ...
The frame bottom bracket pedal force dynamic fatigue testing machine is used to simulate the impact phenomenon that the frame and the front fork will be subjected to a certain magnitude of impact when the front wheel leaves the ground, is impacted or encounters vibration during cycling, and to evaluate the impact resistance of the frame and the front fork. The frame bottom bracket pedal force dynamic fatigue testing machine is a core testing device specifically designed to simulate the dynamic pedal force that the bottom bracket tube of the frame bears during cycling, and to verify the durability and safety of the frame structure.
Reference standard
Designed in accordance with the testing standards of nine countries including CNS, JIS, DIN, NF, ISO, CPSC, CSA, AS and BS, EN 15194 electric bicycles, ISO4210, EN14781 road racing bikes, EN14766 mountain bikes and EN14764 city bikes.
Technical parameters
| Parameter (Left) | Specification (Left) | Parameter (Right) | Specification (Right) |
|---|---|---|---|
| Machine Max Frequency | 0–5 Hz | Load Cell Resolution | 1/10000 |
| Electric Cylinder | Servo-controlled electric cylinder | Displacement Stroke | 150 mm (±75 mm) |
| Test Cycles | 0–999,999 (programmable) | Sampling Frequency | > 200 kHz |
| Data Acquisition | High-speed acquisition card | Force Waveform | Sine wave |
| Control Method | Computer automatic control, with displacement, force, time and other control modes | ||
| Sensor Capacity | Disc-type sensor, 5000 N × 2 units | ||
| Optional Test Fixtures | |||
| Frame pedal fatigue fixture, 1 set | Front fork bending dynamic fixture, 1 set | ||
| Handlebar fatigue fixture, 1 set | Saddle fatigue fixture, 1 set | ||
Core Technology and Functions
1.Pedaling Force Simulation: Dynamic loads (adjustable from 600N to 3000N) are applied to the frame's bottom bracket via a cylinder or electric cylinder to simulate the force transmission process of a rider's repeated pedaling actions.
2.Dynamic Closed-loop Control: Utilizing force closed-loop control technology, the system automatically changes direction when the test force reaches the set value, ensuring test accuracy (error ≤ 5%).
3.Multi-scenario Adaptability: Supports frame size adjustment (16" - 29" or center distance 800 - 1400mm), with loading angle adjustable from 0 to 10°, to meet the requirements of different vehicle models.
Data Acquisition and Intelligent Control
4.High-precision Sensors: Equipped with disc sensors (capacity 5000N) or load cells (3000N) to monitor force values, frequency, and displacement changes in real time.
5.PLC + Touchscreen Control: Allows setting parameters such as test cycles (0 - 999,999 times) and frequency (0 - 5Hz), automatically generates curve reports, and saves data.
Compliance with Standards and Safety Protection
6.International Standards: EN 14764 (city bikes), EN 15194 (electric bikes), ISO 4210 (general frames).
Safety Mechanism: Automatically stops when the test piece is damaged or the deformation exceeds the limit, equipped with shock absorption devices and rigid fixtures to prevent loosening during the test.
