Microcomputer control electro-hydraulic servo rock triaxial testing machine structure and characteristics - Database & Sql Blog Articles

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The rock triaxial testing machine is mainly composed of a high rigidity (medium stiffness) main machine, a pressure self-balancing three-axis pressure chamber, a supercharger, a servo hydraulic source, a servo valve, an air compressor unit, a measurement and control system, a computer system and the like.

1.

The high rigidity mainframe is a door frame type high rigidity structure. The working cylinder is placed in the middle of the lower beam of the frame, and the rails are arranged on both sides to facilitate the installation and disassembly of the three-axis pressure chamber. A spherical platen is installed in the middle of the beam on the frame, which can be self-aligned so that the platen is in close contact with the end of the compression rod.

2.

The pressure self-balancing three-axis pressure chamber pressure chamber adopts pressure self-balancing technology, so that the axial test force and the confining pressure do not interfere with each other and are independent of each other. Made of high-strength alloy structural steel, each pressure plate and pressure-transmitting piston rod are made of heat-treated and precision-machined bearing steel. The pressure chamber is placed on the moving trolley and can be moved along the track for convenient loading and unloading of samples.

3.

The supercharger is an ultra-high pressure oil source that outputs the working oil of the system after being pressure-amplified, and the super-high pressure oil is supplied to the three-axis pressure chamber. As lateral pressure (ie, confining pressure).

4.

The servo hydraulic source servo hydraulic source consists of a high-pressure piston pump set, a relief valve, a precision oil filter, a temperature sensor, a cooler, etc., a servo oil circuit system and a low-pressure gear pump, and a pressure-filling system The system is composed of three parts. The test oil and the servo working oil are separated from each other, and are not polluted with each other, thereby improving the service life.

5.

The air compressor unit is used to remove the pressure in the chamber.

6.

Microcomputer controlled electro-hydraulic servo rock three-axis shear test system measurement and control system measurement control system consists of axial force sensor, confining pressure sensor, axial deformation sensor, radial deformation sensor, displacement sensor, all-digital measuring controller, servo valve and other parts composition.

6.1

Set

12

Measurement channel, where force

2

Channels; axial and radial deformation

1

Displacement

2

Channels.

6.2

The measurement resolution is high, and it changes internally in the whole range, and the internal and external are not divided.

6.3

With automatic zeroing, calibration, automatic storage.

6.4

It has constant test force, constant deformation, constant displacement, uniform test force rate and uniform deformation rate control function.

6.5

It has protection functions such as overload, over-range, oil blockage, super oil temperature, and test piece fracture.