1、 Main functions:

The YAW-3000T pressure testing machine is controlled by a microcomputer and automatically completes the testing process with constant speed loading. It can be used smoothly and horizontally after landing. Mainly used for compressive strength testing of building materials such as rocks, concrete, cement products, hollow bricks, fly ash bricks, refractory materials, engineering materials, stone materials, rubber bearings, etc. It is an essential equipment for laboratories in industries such as highways, railways, bridges, construction, building materials, and colleges.

IIMain features:

1shouldpressure testing machineUsing high-precision sensors and computer control, it can automatically store, view, and print test reports.

2shouldConcrete elastic modulus testing machineBy using a rotating screw to adjust the compression space, the experimental progress is greatly accelerated.

3Complete the setting of experimental parameters, control of experimental processes, data acquisition, processing, analysis, storage, and display during the experimental process

4elastic modulus of concreteAutomatic measuring device, automatic data collection, real-time automatic comparison, no need for manual calculation.

5Automatic data collection, calculation, and analysis. It strongly ensures the accuracy of the experiment and makes the testing process very convenient.

1 Host

Using a single wire rod host placed under the oil cylinder, the testing space can be easily adjusted. The structure is shown in Figure 1.

2 Transmission System

The lifting of the crossbeam is achieved by manually rotating the handwheel and screw to adjust the test space.

3 Hydraulic system

The hydraulic principle is shown in Figure 2, which is a load adaptive oil inlet throttling speed control system.

The hydraulic oil in the oil tank is driven by a motor to enter the oil circuit through a high-pressure gear pump, and flows through a one-way valve10 μ high-pressure oil filter, differential pressure valve group, servo valve, enter the oil cylinder. The computer sends control signals to the servo valve to control the opening and direction of the servo valve, thereby controlling the flow into the oil cylinder and achieving control of constant speed test force, constant speed displacement, etc.

4 Control System

The PC fully digital control system realizes closed-loop control of test force and test process, with control functions such as constant speed test force and test force maintenance, as well as screen display functions for test force, peak value, and test curve. It can complete the data processing of the test according to standard requirements. The expert system for intelligent setting of full mouse input operation and control mode enables arbitrary setting of control modes and smooth switching between various control modes, giving the system maximum flexibility. The ASCII file storage of multi-channel parameters is used for simulation reproduction of experimental processes and reanalysis of experimental data. The fully digital programmable amplifier ensures that zeroing and shifting are all automatically performed by the computer. The software system fully utilizes the powerful functions of computer virtual instruments. The display function of multiple test curves and the function of saving test parameters throughout the entire process ensure the reprocessing and network operation of test data.

3、 Technical parameters

1. Maximum test force: 2000 (3000) KN

2. Force accuracy: ≤± 1%

3. Deformation measurement device accuracy: 0.001mm

4Compressed space (distance between upper and lower pressure plates):400mm

5Pressure plate size:220*220mm

6Piston stroke:60mm

7. Clear spacing between columns: greater than 320mm

8Loading rate: digital setting, according to material and standard requirements

9. Overload protection: 2% over full range

10. Host dimensions: 900mm × 500mm × 1500mm

11Motor power:1KW

12Working voltage:380V/220V

13. Protective cover (anti collapse).

14Weight of the whole machine:1800Kg

15. Automatic measuring device for concrete elastic modulus.

19. Technical data:

Including: User Manual

Software User Manual

Certificate of conformity, packing list