Fatigue testing machine for steel strand anchorage

Fatigue testing machine for steel strand anchorage

Product Introduction of Fatigue Testing Machine for Steel Strand Anchors:

1. The GPSW500 microcomputer controlled electro-hydraulic servo steel strand anchor fatigue testing machine is one of the latest series of dynamic loading test system products developed by our company. This series of products has the characteristics of easy use, high control accuracy, and good reliability. This series of testing machines has been designed based on international advanced electro-hydraulic servo dynamic testing machine technology and combined with the actual usage conditions of users during the research and development process. The key components such as actuators, constant pressure servo pump stations, and loading frames are designed by our company. The servo valves, seals, and other key purchased parts are all well-known international and similar products, greatly improving the stability and reliability of the system. The overall performance of the testing machine is comparable to the international advanced product technology level.
2. The machine consists of a main frame, actuators, wheel type load sensors, displacement sensors, fixtures, etc. The upper crossbeam is driven up and down by hydraulic pressure to adjust the test space. The host adopts a four column high rigidity structure design, with the actuator placed on the upper crossbeam. A fatigue specific load sensor is installed on the actuator piston head, and different types of fatigue fixtures can be configured to adapt to different types of fatigue tests. The upper crossbeam adopts hydraulic lifting, the crossbeam adopts hydraulic clamping device, and the entire frame adopts seamless connection.
3. Wide applicability of the product: using an electro-hydraulic servo fatigue testing machine for fatigue testing of anchor steel strands, with loading waveform *. At the same time, replacing the fixture can be used for other fatigue tests, such as fastener fatigue tests, rail bending fatigue tests, component bending fatigue tests, etc. Due to the use of electro-hydraulic servo loading method, its frequency can be accelerated, which can significantly shorten the test time.

The product meets the requirements of standards such as GB/T143702007 Anchors, Fixtures, and Connectors for Prestressed Reinforcement, JT/T 329.21997 Test Methods and Inspection Rules for Anchors, Fixtures, and Connectors for Prestressed Steel Strands in Highway Bridges, TB/T Technical Conditions for Anchors, Fixtures, and Connectors for Prestressed Reinforcement in Railway Engineering, JGJ852002 Technical Specification for Anchors for Prestressed Reinforcement, etc.Fatigue testing machine for steel strand anchorage
4. The testing machine mainly consists of the following units:
One set of four column host frame
One ± 500KN servo actuator
One set of 75L/min constant pressure servo pump station
1 set of stabilizing oil separator and pipeline system
1 set of fully digital hydraulic servo controller

Functional features:
The position adjustment of the clamp is convenient, and the position of the actuator piston can be infinitely and digitally adjusted.

L adopts a dedicated fatigue load sensor with a long service life.

Frequency and amplitude digital adjustment, simple operation, no need to adjust the oil source system.

The load and displacement waveforms can be freely selected during the experimental process.

Adopting a dual core control system of "CPU+DSP" and a bus slot architecture, it is easy to expand and has excellent dynamic performance.

The communication with the computer adopts USB or Ethernet port (RJ45), which has a high data transmission rate and enables real-time processing of software data.

The high-speed sensor data acquisition card ensures high-speed response of dynamic control and accurate data sampling.

Closed loop control of displacement, load, and deformation, achieving smooth control switching between them.

Built in function generator to control sine wave, triangular wave, trapezoidal wave, oblique wave, etc.

Closed loop control is fast and high-frequency, achieving complete dynamic control characteristics.

The stable sampling and control frequency ensures the accuracy of data and control.

L has limit protection and full-scale overload protection functions.

One 500kN actuator
Place it on the moving crossbeam;
Maximum static test force: 500kN;
Maximum dynamic test force: 500kN;
Effective stroke of actuator:+/150mm (total stroke 200mm);
The actuator is equipped with a built-in displacement sensor, an external electro-hydraulic servo valve, and a force sensor;
Design a hydraulic buffer zone at the amplitude limit position of the actuator to avoid damage caused by uncontrolled operation;
Sensors and servo valves