The electro-hydraulic servo concrete sleeper static load testing machine purchased by a subsidiary of China Railway Group has been used for more than one year and is running well!

1. Basis for design, manufacture and inspection of sleeper static load testing machine

1.  GB/T2611-2007 "General Technical Requirements for Testing Machines"

2.  JJF1103-2003 "Evaluation of Computer Data Acquisition System for Universal Testing Machine"

3.  JJG139-1999 "Verification Regulations for Tension, Pressure and Universal Testing Machines"

4.  GB/T16826-2008 "Electro-hydraulic Servo Universal Testing Machine"

5.  TB/T 1879-2002 "Test method for static load crack resistance of prestressed concrete sleepers"

6.  JJG (Railway) 158-96  " Verification Regulation of 500kN Concrete Sleeper Static Load Testing Machine "

2. Application, equipment composition and working principle of sleeper static load testing machine

1. Purpose: This testing machine is suitable for static load cracking tensile test of concrete sleepers (type I sleepers, type II sleepers, type III sleepers, etc.). It can accurately and quickly detect the static load strength of various sleepers, and can test sleepers. Actual carrying capacity.

2. Composition: This testing machine is mainly composed of press, trolley, track, jacking mechanism, hydraulic system, electrical control system and other parts.

3. Working principle : hoist the sleeper on the trolley, push the trolley into the testing machine, use the positioning ruler to adjust the position of the sleeper so that its load center coincides with the center of the pressure plate, and according to the set working procedure, the piston lifts the sleeper and rises quickly— Approach again slowly—according to the given loading speed, constant load—resisting for 180 seconds—unloading and returning to the designated position, (or reloading causes the sleeper to crack) and print the test results after completing the test on the three loading surfaces of the sleeper.

3. Features of sleeper static load testing machine

1. The testing machine adopts servo automatic control, hydraulic loading, electronic measurement, microcomputer display and automatic data processing. The hydraulic system of this machine is mainly composed of fully digital precision servo valve and high pressure oil pump. Automatic control by computer. The integrated oil source control system, the operation part is highly suitable, which is convenient for the experimenter to operate and observe.

2. The host adopts a four-pillar structure. It is convenient to load and unload samples and has good stability.

   The main engine part is composed of base, cylinder piston, upper and lower pressure plates, column, upper beam, spherical indenter and related parts. 

3. Loading system, integrated operation control oil source system, stylish, beautiful and easy to operate.

Adopt hydraulic servo hydraulic valve to ensure high precision, high efficiency, low noise and quick response of the system;

It is composed of all-digital multi-channel closed-loop measurement and control system, sensors, all-digital servo valve, high-pressure oil pump, oil source console, etc. The computer realizes functions such as automatic control, display, data acquisition, and processing.

4. Using branded microcomputer, equipped with Windows system testing machine software, it can measure the compressive performance of various materials according to national standards or requirements provided by users.

The data acquisition, processing, analysis, storage and display of the test process are automatically completed by a microcomputer, and the measurement results are accurate and reliable. The test data is counted and processed again, and then various required test curves and test reports are output and printed. The test curve amplification, comparison, and traversal functions are provided, which is intelligent and convenient.

A. The machine adopts high-precision load sensors and digital control valves, and is fully controlled by a microcomputer.

B. Full Chinese interface, simple operation, intuitive display of the interface: display units such as force value, peak value, loading speed fluctuation, force and time curve.

C. Equipped with a database for laboratory networking, test data can be transmitted to the network through a data interface, without changing the software or host part. Provide communication protocol.

D. There is a special form template writing software, and the form form can be designed by yourself.

E. Self-built powerful test database, test data can be saved, inquired, and recalled at any time, and data transmission and conversion with user local area network and internet can be realized.

F. Fully automatic closed-loop control function, operation is direct, fast and efficient, can achieve equal load loading, can maintain the load for a long time, and complete the complex compression testing machine.

4. Main technical indicators of sleeper static load testing machine :

           The company also produces the following testing machines necessary for sleeper companies to inspect raw materials: WAW-300D microcomputer controlled electro-hydraulic servo universal

The testing machine, YAW-300E microcomputer controlled cement compressive and flexural testing machine, PMW-500 sleeper fatigue testing machine are welcome to buy!