Static Stiffness Testing Machine

1. Main Application and Scope of the Testing Machine

Product design, manufacturing, and inspection are based on the relevant clauses of the following standards:
1) GB/T 2611-2007 "General Technical Requirements for Testing Machines"
2) TB/T 2626-1995 "Technical Specifications for Rubber Pad Plates under Railway Concrete Sleepers"
3) Technical Conditions for Dual-Action Elastic Side Bearing (Q/QC35-091-2000)
4) Technical Conditions for Axial Rubber Pads Used in Bogies (Q/QC35-092-2000)
5) GB/T 16491-2008 "Electronic Universal Testing Machine for Materials"
6) JJF1103-2003 "Evaluation of Computer Data Acquisition Systems for Universal Testing Machines"
7) JJG139-1999 Verification Regulation for Tensile, Compression, and Universal Testing Machines

1.1 This testing machine is our company's latest developed product, suitable for static stiffness testing of elastic pads used in scientific research institutes, industrial and mining enterprises. It can also be used for static stiffness testing of rubber joints in locomotive traction rods, motor suspension rods, axle box pull rods, connecting rods, etc. It features compact structure, low noise, and high precision. The fully mechanical structure, from AC servo motor to reducer, adopts a fully sealed design, requiring no oil replacement during use, and eliminating hydraulic oil leakage and proportional valve clogging. It is a new generation of environmentally-friendly testing machine.

1.2 The testing machine adopts a two-column frame structure with good rigidity and a compact overall design. It uses a high-precision load sensor for force measurement, ensuring high testing accuracy and precise force values, thereby achieving higher overall accuracy. The upper fixed crossbeam serves as the upper loading plate, while the lower loading plate is installed at the center of the machine. The lower plate applies upward force to the specimen via a drive screw. The AC servo motor, control system, drive unit, and transmission system are all mounted at the base of the mainframe, with protective covers surrounding the machine to ensure cleanliness and safety.

1.3 The testing machine uses an imported AC servo motor and driver as the control system, driving a precision cycloid pinwheel reducer to conduct tests via a precision ball screw pair, enabling wide-range adjustment of displacement loading speed (0.05-30 mm/min), with high-precision control and smooth, efficient test performance.

1.4 The system adopts a branded microcomputer equipped with dedicated rubber static stiffness testing machine software based on the Windows 2000/XP full Chinese operating system platform, in a man-machine dialogue format. It conducts tests according to national or user-provided standards, allowing parameter setting, process control, data collection, processing, analysis, recording, and display, with precise and accurate control and measurement. It also performs statistical analysis and processing of test data, then outputs and prints various required test curves and reports, offering intelligent and convenient operation.

1.5 The testing machine is controlled by a microcomputer and features control modes such as constant test force rate, constant stress rate, and test force holding. It realizes functions including on-screen display of test data and curves, disk storage, and database management. The product offers high accuracy, superior performance, high reliability, and convenient operation. The measurement and control system uses a fully digital controller as its core, capable of displaying test force, peak test force, crosshead displacement, and test curves on the screen. All test operations can be completed via mouse input on the computer screen, or by using the function keys and numeric keypad on the panel through the display, providing a friendly human-machine interface and convenient operation.

1.6 Has the function of returning to the initial position after the test, efficient and fast.

1.7 Features limit position protection at working positions, overload (2% FS), and overcurrent protection functions, ensuring reliability and safety.

1.8 Build a powerful test database, where test data can be saved, queried, and retrieved at any time.

1.9 This machine has strong expandability. By adding accessories, it can perform compression and bending tests on other materials.

2. Main technical parameters of the testing machine