Mechanical static load test device

Q/GDW11008-2013Technical Specification for Low Voltage Metering Box and referenced documents within this technical specification

Mechanical performance indicators and displacement accuracy indicators shall be tested in accordance with the relevant provisions of GB/T16491-2008 Electronic Universal Testing Machine

Main technical indicators

1.1 Overall Equipment Requirements

After the installation of the test piece (low-voltage measuring box), the static load and torsional force tests are automatically completed. The sample clamping mechanism ensures reliable clamping of the sample, and there is no resistance during the installation of the sample. There is no deformation or displacement during the testing process. The clamping height of the specimen shall not exceed 30% of the total height of the specimen

The software can select and customize specimen specifications, and the coordinates of static and torque force points are integrated into the specimen specifications and can be set separately.

Record the relationship between thrust and displacement changes during the experiment and display it in the form of a curve.

The central control unit should adopt a highly reliable industrial computer system, and the system should operate reliably.

All moving parts of the system are equipped with high-precision ball screws and high-performance servo systems to ensure the accuracy and reliability of the system's operation.

Components that require manual adjustment of position should be equipped with manual control buttons in convenient locations for easy operation.

Each moving component must have sufficient movement speed, and the adjustment time of each component should not exceed 20% of the required testing time after the testing process starts automatically, in order to improve testing efficiency.

During the testing process, if there are abnormal situations such as specimen damage, the test can be automatically stopped and clear abnormal prompts can be given. The system has reliable error detection and limit detection capabilities, and limit detection switches should be set at the endpoint positions of all moving parts, whose status can be reflected to the control center.

1.2 Minimum size of specimen: 260 × 110 × 430 (mm)

Maximum size: 1500 × 1000 × 180 (mm)

1.3 Thrust force accuracy  0.5% FS

1.4 The thrust constant force maintains a force value error of  1%

1.5 The thrust component moves at a speed of 0.1mm/min to 500mm/min, automatically adapting

1.6 Positioning accuracy of thrust components

1.7 The displacement resolution of the thrust component moving in the direction of force is 0.01mm

1.8 Displacement accuracy of thrust components in the direction of force

1.9 The thrust range generated by the thrust component is 0-1800N

1.10 Thrust resolution 0.1N

1.11 The thrust component is located on the long side of the specimen with a stroke greater than 700mm

1.12 The thrust component is located on the wide side of the specimen with a stroke greater than 120mm

1.13 The maximum dynamic clamping force of the specimen fixture is greater than 3000N

1.14 Measurement accuracy of dynamic clamping force of specimen fixture

1.15 The static holding force of the specimen fixture is greater than 10KN

1.16 The clamping force resolution of the specimen fixture is 0.1N

1.17 The horizontal displacement of the bottom of the clamping part during the maximum static test of the specimen

1.18 Bottom tilting displacement of the specimen during maximum static testing

1.19 Deformation of the frame at maximum test force

1.20 Zero drift of force value

1.21 The data bits of the force value acquisition system are 24

1.22 Force collection frequency>15 times/second

1.23 Software functions and technical specifications

The software is developed using high-level languages and adopts modular design for easy upgrading and maintenance;

The software has built-in commonly used specimen sizes and allows customization of specimen parameters;

After selecting the specimen specifications, the user automatically adjusts each component to the appropriate testing position, reducing the preparation time required for testing;

Equipped with a device calibration interface, the force value can be calibrated at multiple points, and the displacement value can be calibrated at two points;

Capable of displaying the values of each sensor in real-time;

Capable of displaying the status of each switch in real-time;

Real time display of the position of each moving component;

Capable of setting the clamping force of the specimen fixture;

Ability to adjust the position of each moving component in the software interface;

Set the displacement of each moving component during the experimental process;

Can set the movement speed of each moving component;

Set the force range of each sensor during the experimental process and enable overload judgment to ensure equipment safety;

It has buttons for starting, pausing, terminating, and emergency stopping the experiment.

1.24 Control center parameters

The control center adopts industrial computers for control, requiring: fanless Intel Core i7 ultra compact embedded industrial computer; Support high-resolution multimedia widescreen display; Support various application extension interfaces; Easy to integrate, easy to maintain, wide input voltage; IP40 protection level

Adopting industrial grade brand displays, requirements: embedded installation form; Screen size of 19 inches or more; Horizontal frequency 60KHz, field frequency 75KHz;

Motion controller requirements: symmetrical and asymmetrical T-shaped and S-shaped curve acceleration and deceleration; Interpolation of any 2-3 axis straight line; Arbitrary 2-axis arc interpolation function; Continuous interpolation function, maximum driving speed 2MHz; Location comparison function; Variable circular function; Multi mode automatic return to origin; External signal triggers multi axis position latch.