one. The test principle of the bicycle frame vertical force fatigue testing machine: During the actual riding of a simulated bicycle, under different road conditions, the rider's own weight will produce a certain amount of pressure on the saddle, which will be transmitted to the bicycle through the saddle tube. Especially when riding on bumpy roads, the force on the frame is relatively large and frequent. Therefore, the quality of the frame is related to the safety and convenience of use of the entire vehicle. This testing machine is designed according to relevant fatigue test standards. The entire test system is automatically controlled by a computer. The force application system adopts force closed-loop control. When the test force applied to the frame reaches the set force, it will automatically return. 2. Basis standards for bicycle frame vertical force fatigue testing machine.
3. Test methods for bicycle frame vertical force fatigue testing machine
During the test, the frame is fixed on the testing machine according to the method specified in the standard. The position of the fake front fork can be adjusted manually to adapt to the size of the frame
Fix the frame and the fake front fork on the roller axle, fix the rear dropouts on the rear axle, and lock the rear axle. piece.
During the test, the vertical force loading fixture assembly of the frame is fixed on the testing machine according to the standard method. The height of the loading beam can be adjusted manually to adapt to the height of the frame
Set the test on the computer Required test force value and number of times.
Adjust the maximum allowable deformation of the frame. After this deformation is exceeded, the machine will automatically stop testing
Start the test program to start testing. When the test reaches the set number of times or the specimen is damaged, the machine will automatically stop testing. and retain the test results.
4. Main technical parameters of the bicycle frame vertical force fatigue testing machine
Sensor capacity
Load element resolution:/
Test force can be set (force closed-loop control)
/> Force control accuracy % (dynamic)
Test frequency Hz (adjustable)
Number of tests can be set
Loading method pneumatic loading
Database function: automatically record each measurement The results facilitate analysis and provide evidence
Equipped with a fake frame front tube, which meets the standard test requirements. During the test, it is installed in conjunction with the headset of the car.
The locking screw for adjusting the position is of quick-release type for easy operation, and the adjusting position is adjusted by a screw.
Equipped with an air pressure sensor to sense the air supply pressure. If the air supply pressure continues to be lower than the set pressure for a period of time, the machine will alarm and shut down.
Shutdown conditions: low air supply pressure, large deformation of the specimen, shutdown when the cylinder stroke exceeds the set value
Equipped with an independent electric control box, the same as Yongqi’s existing
machine frame Below, there is a drawer for storing specimens and other items.
The solenoid valve is equipped with a guard to prevent damage.
Equipped with a pressure-stabilizing air tank to better stabilize the working pressure and make the loading force more stable.
Brand of pneumatic components: Japan M or Germany
Power supply
Gas source: air pressure
Gas flow rate/
The main body of the machine is made of steel components, which has high strength and is not easily deformed.
The machine base is made of solid steel, has good stability, and is equipped with reinforcing ribs and leveling feet.
The appearance of the machine is electrostatically sprayed and other parts are electroplated. It has high anti-rust ability and beautiful appearance.
WSD-8701 bicycle frame vertical force fatigue testing machine