Cheltec specialists have been designing and manufacturing testing equipment for various purposes for the mechanical engineering industry for over 25 years.
The stands are designed for testing products and structures with multi-coordinate loading, pressure testing, conducting research and diagnostic tests of equipment and scale models, and acoustic testing.
Stands for Testing Structures and Industrial Products
Test Stand for Durability Testing of Ford Car Struts
To confirm high quality and ensure safety, automotive component manufacturers and service centers conduct product tests. At the request of PO "Trek," specialists from Ural Engineering Center (UrIC) designed, manufactured, and delivered a test stand for testing stabilizer struts for durability with simulated operational loads and movements.
Composition and Purpose of the Main Elements of the Stand:
- Mechanical equipment is designed to impart movement to the tested product and apply load: main rocking unit, movable rocking unit, and loading system.
- Hydraulic equipment provides load application to the tested product with force P, varying at a given frequency and amplitude: pump station, hydraulic cylinder, jet electrohydraulic amplifier of UrIC design (with lower sensitivity to fluid purity and high maintainability).
- Electrical equipment is intended for forming control electrical signals and supplying power: stand control cabinet, electric motors, stepper motor, temperature relay.
- Control system with software.
Stand Control Program
The program is implemented in the TIA Portal V13 SP1 package by SIEMENS, and the hardware part is based on the SIMATIC controller.
The control program includes:
- Algorithms for executing the test program in automatic or manual mode.
- Processing analog signals from position sensors and dynamometers.
- Analysis of emergency conditions of sensors, starters, frequency converter, and stepper motor driver.
Control, Visualization, and Data Archiving System (SCADA)
The SCADA system is implemented in the LabVIEW 2012 SP1 software package (a laptop with the software is included). The SCADA system includes:
- Buttons for controlling the stand operation and fields for setting test parameters.
- Indicator lamps for stand status and a window for displaying error messages.
- Fields displaying graphs of actual articulation angle, rotation angle, and force acting on the stabilizer strut.
- Fields displaying maximum (minimum) points of articulation angle, rotation angle, and force acting on the stabilizer strut.
- An archiving control button and a field for selecting the folder for archival data.
Siemens Frequency Converter
For controlling the stabilizer strut articulation angle drive.
Driver for Stepper Motor Control
For controlling the stabilizer strut articulation angle drive.
Measurement System:
- Universal dynamometer (tension, compression).
- Inductive displacement sensors and signaling elements for indicating the stand axis rotation angles (articulation angle and rotation angle).
- Analog input module.
Technical Specifications
| Axial load change amplitude P (Fig. 1.1), kgf: | 0…600 |
| Axial load application frequency P, Hz: | 0…3 |
| Articulation angle change amplitude γ: | ±0...35° |
| Articulation angle rotation frequency γ, Hz: | ±0...35° |
| Articulation angle change amplitude α: | ±0...35° |
| Articulation angle rotation frequency α, Hz: | ±0...35° |
| Maximum torque Mγ (Fig. 1.1), Nm: | 20 |
| Operating temperature range, °C: | -40...+60 |
| Dimensions: |
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| Pump Station: |
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| Electrical Equipment: |
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The stand was manufactured for PO "Trek," Miass.
