Special load bending fatigue testing machine for automobile wheels

1、 Product Overview:

This testing machine is a load-bearing wheel bending fatigue testing machine used for load-bearing wheel bending fatigue testing.
The design basis of this testing machine is:

GMMTL#640Wheel bending fatigue test

SAE j 267Truck wheelsxingAbility to request and test methods

ISO 3894Road vehicles-Commercial vehicle wheels and rims - Test method

GB/T 5909Truck wheelsxingAbility to request and test methods

IIStructure Description

Host schematic diagram

1. Structure

This machine adopts a structure where the wheels do not rotate and the load rotates around the loading axis. The test wheels are subjected to bending through centrifugal loading. Clamp by the cylinder to automatically align the wheels during installation.

2. Install Chain

※Wheel installation deviation exceeding tolerance alarm;

※In the experiment, the initial offset increment of the loading axis exceeded the limit and triggered an alarm for parking;

※The speed can be set, and it will automatically stop and unload when the set speed is reached;

※The main engine door opens and triggers an alarm for parking;

※Open the calibration window to trigger an alarm and stop the vehicle;

※The detected wheel has been damaged and the electrical control of the well has failed, causing the machine to power off and stop;

※Capable of detecting resonance frequency

3. Software control system

3.1. Closed loop control of the testing force and wheel deformation testing process has been achieved;

3.2. The data collection system consists of4High precision road24bitA/DComposition of conversion channels. The highest resolution is up to1/300000The entire process is not divided into stages;

3.3. SelectionBBTheADTheXilinxWaiting for original integrated components, fully digital design;

3.4 CompliancePCIBus standard, microcomputer automatic recognition and installation, achieving "plug and test";

3.5. The electronic measurement system does not have analog components such as potentiometers, ensuring interchangeabilityxingConvenient for maintenance and replacement.

3.6. Computer control system with high integrationxingIt has advantages such as stability and easy adjustment. Real time collection of experimental data is possible, and the experimental characteristics can be improvedxingReal time dynamic display of curves, and experimental data files can be displayed in real-timeAccessCommon databases orSQLserveThe storage of large databases facilitates resource sharing and network management for customers, as well as user reanalysis. For various user-defined reports, this software can easily access them, solving the problem of different users or the same user having different needs for experimental reports at different times. This software can process raw data of experimental force, displacement, and time, as well as the curves derived from them.

3.7 Protection Function:This machine has two types of limit protection: software and mechanical,The proportion of automatic shutdown beyond the maximum load can be dynamically set;It has multiple protection functions such as overcurrent, overvoltage, overload, etc.

3.8. Automatic labeling can be achieved for load channels, which is intuitive and convenient.

3.9 Batch testing can achieve hierarchical display of curves and automatic curve tracking.

3.10. The software can achieve user-defined speed settings, high-precision speed calibration, and adjust speed gears and codes at any time.

3.11 Monitoring the test process: Real time display of various parameters such as test force, displacement, curve, etc. during the test process can be achieved.

3.12. Software permission level management function: In order to improve the security of software and data, this software can achieve permission level management function by setting different password protections.

3.13. Result reproduction function: After the experimental operation is completed and saved, the test data can be opened and reanalyzed at any time according to the user's needs.

3.14. Pressure time, deformation time and other curves can be selected according to user needs for testing, data display, storage, analysis and printing.

3.15. Result comparison function: Multiple test curves can be observed simultaneously, and the characteristics of the sample to be analyzed can be achieved through the superposition and local magnification of multiple curvesxingComparison of

IIIMain technical parameters

※Model:QWP-50000

※Working voltage:AC 380V 50Hz

※Motor power:5.5KW

※air supply pressure:0.5-0.8MPa

※Specification of test wheel:

Nominal diameter:16"~24.5"

Nominal width:5"-12"

※Range of test wheel offset:-60--+180mm

※Test load speed:Max.1800rpmStepless variable frequency speed regulation

※Wheel rotation counting capacity:1x10⁷R (Automatically stop and unload when reaching the set value)

※Loading arm length:1000mm

※Loading bending moment:Max.50kN.m， Continuous adjustable, closed-loop control, precision±1%

※Loading displacement and control accuracy:±5mm(The largest),±0.2mm

※Dimensions of the testing machine: (Length x Width x Height): Approximately 1800mmx1400mmx1800mm

※Weight of testing machineApproximately 3.6 tons

4Power supply and working environment required for the equipment

1. Power supply for variable frequency speed regulation system

voltage：3-phase 380V±10% 50Hz

Current: 30A

Three phase 5-wire system: (3L, N, PE)

2. Control system power supply:

voltage：3X380V±10% 50Hz

current：10A

Three phase 5-wire system：(3L,N,PE)

3. The cables connecting the control cabinet to the AC variable frequency motor and the cooling fan should pass through metal shielded pipes (for example, 4 'galvanized iron pipes can be used as substitutes).

4. If the power system causes significant interference to the equipment, it is recommended to separate the power supply paths for the variable frequency speed control system and the control system.

5. Required compressed air source:0.5-0.8MPaThe traffic is not smallRegarding,2700L/min

6. Equipment Applicable Environment:

Temperature: 10-40 ℃

Humidity: 85%

5Operational Safety Guidelines

1. Before starting the experimental machine, it is necessary to check whether all protective switches and other safety components are functioning properly

2. Before starting the experimental machine, it should be checked whether all protective devices are closed properly

3. Before starting the experimental machine, it should be confirmed that there are no obstacles or unrelated personnel around the machine

4. Before starting the experimental machine, it should be powered on and preheated for 15 minutes

5. Pay attention to the following items when installing the test wheel rim

5.1 All gaskets must be clean

5.2 The pressure plate must be adjusted to slightly tilt the imaging wheel rim direction, and this tilt must exist

5.3 The clamping nut must be tightened with the specified torqueTighten (for)CFT-5机Ma=570Nm）

6. If any abnormal situation occurs during the operation of the equipment, the emergency stop button should be pressed immediately

six、Other precautions

1. Regularly check whether the bolts, pipe joints, and cable joints of key parts of the equipment are loose, and whether the gas pipes and cables are damaged

2. When conducting equipment inspection, maintenance or repair again, unless necessary, the equipment must be powered off

3. Avoid welding, polishing, or flammable work near the equipment

4. Before starting the maintenance work, the pressure in the pressure pipeline (compressed air, etc.) should be removed

5. Do not modify the set parameters in the control system without authorization, otherwise the consequences will be borne by the user.