XQ-5231 Frame Front and Rear Fork Vibration Testing Machine
I. Application Scope of the Frame Front and Rear Fork Vibration Testing Machine; 
The regulations require that in GB-17761-1999, according to 6.2.2.2, QB 1880 6.4.2 standard be used for design and production. At the same time, it must also meet the design and manufacturing requirements based on GB14746-2006, GB3565, QB2176, and JIS9401 standards. The specifications require inspecting the damage of the front fork, such as deformation and fracture, by measuring the vibration strength of the front fork. The frame vibration testing machine is used for the impact test of the frame/fork assembly. The rear fork end, which is installed in the bearing, is fixed on the testing table through the fixed shaft, completely simulating the original size of the frame. Test forces are applied within the specified range, the number of vibrations is set, and the fixation condition of the frame after the test is observed.
II. Test standards for the front and rear fork vibration tester of the frame;
According to the standards of GB14746-2006, GB3565, QB2176 and JIS9401, it is designed and manufactured.
III. Main parameters of the front and rear fork vibration testing machine for the frame;
1. Vibration mode: Drum-type dual vibration mode
2. Vibration position; Dual vibration for the front fork and rear fork
3. Vibration frequency: Adjustable (or as per requirement)
4. Amplitude: Refer to the parameters.
5. Transmission method: AC motor 2HP
6. Application scope: 20" - 28" frames or 47 - 63CM
7. Control method: Motor controls vibration
8. Resolution: 1 N
9. Counting error: 1% of Full Scale Value
10. Speed error: 1% of Full Scale
11. Working power supply: AC 380V 50HZ
12. Dimensions: Approximately 2020 * 815 * 1750 mm
IV. Structure of the frame front and rear fork vibration testing machine; 
1.This machine is composed of a frame, clamping and adjusting devices, collector and controller test accessories. It uses high-precision sensors and controllers as its main components, featuring high accuracy and stability.
2. By using rapid plug-in load variations, the product performance can be tested under different load conditions.
3. Basis: According to standards GB3565, QB 1880, QB2176, and JIS9401, it is designed and manufactured.
4. Power source: Imported precision variable-frequency motor
5. Number of tests: Adjustable at will
6. Counter: Can be set to any value from 0 to 999,999. It automatically displays the test progress and automatically retains the test results.
7. Shutdown: If the specified number of cycles is reached or if the specimen breaks down during the test, the machine will automatically shut down while retaining the number of test cycles.
8. Microswitch: Equipped with a safety microswitch. In the event of damage to the test object, the machine will automatically stop.
9. Base frame: It is specially designed with a steel structure and is suitable for various sizes and shapes of frames. It is a multi-functional testing platform.
10. Horizontal feet: There are horizontal adjustment feet at the front, back, left and right, allowing for adjustment of levelness.
11. Appearance: Electrostatic powder coating, electroplated hard chrome treatment
V. Precautions for the Front and Rear Fork Vibration Test Machine of the Frame; 
1.Before conducting the vibration test on the frame's front and rear forks, please ensure that the frame is free from any loose screws or similar issues. If any looseness is found, make sure to tighten it before the test.
2. During the test with the frame front and rear fork vibration tester, it is strictly prohibited to have anyone standing nearby.
3. Regular maintenance of mechanical transmission parts requires the addition of lubricating oil.
4. The front and rear fork vibration testing machine must not be wiped with corrosive liquids. Instead, use anti-rust oil.