Consolidometer

Reference diagram (artificial rain system for reference only)

1. Device overview

The system is mainly used to simulate the test process of soil layer change in highway slope soil layer, ditch and reservoir slope reinforcement section, rock and soil mining, tunnel mining, mineral mining, non-ferrous metal mining, coal mining and so on. The simulation test of rock and soil stress can be realized by the servo loading actuator.

A variety of complex geotechnical environments can be simulated by filling different similar materials. The front large area observation window can better observe and record various changes during the test. With self-balancing design concept, no reaction geosyncline is required during installation.

The model loading system consists of a model box device, a set of servo actuators, a force value sensor, a displacement sensor, a control software, an electro-hydraulic servo oil source, a computer, an inclination Angle and a water shower system, etc.

Detectable test content:

1. Rock and soil mining

2. Tunnel digging

3. Mineral extraction

2. Model box device

1. The test device is composed of a self-balancing workbench, a mesh front baffle, a piece of high-strength tempered glass, 2 sets of modular side baffle, 1 set of modular back baffle, 3 detachable modules, 2 columns, 1 beam, 1 set of actuators, 1 set of fixture and measurement and control system.

2. The overall appearance size of the equipment is 2000×1800×2700 (length × width × height), and the internal available space is 800×800×1000 (length × width × height).

3. The model box is bolted to the workbench. The lower floor is a composite structure with preset Angle oil cylinder and washboard bottom plate.

Reversal mechanism diagram

4. The table can withstand the maximum static bearing capacity of 2500KN (10mpa), the reaction frame can withstand the maximum static bearing capacity of 3000KN, and the entire equipment can withstand the maximum vertical static bearing capacity of 3000KN.

5. Large stroke actuator can provide 2500KN vertical loading force.

6. Precision machining of each connection surface, annealing of the whole reaction frame to eliminate residual stress;

7. Install ports and function expansion ports are reserved on the main installation surface.

8. All steel components are made of Q355B structural steel, in line with national standard testing standards, and each connection surface is machined.

9. Use E5003 ~ E5016 series welding rod.

10. Column, beam welding Angle dimension tolerance of ±35 ', welding wire dimension tolerance of ±4.5mm(L<4m), ±8.0mm(L>4m).

11. After sandblasting and rust removal, the outer surface of each steel member is immediately sprayed with epoxy zinc-rich primer twice and top paint twice.

12. The holes set according to the modulus on the column and all the beams are die-drilling or CNC machining, and the spacing error of the holes is not more than 0.2mm.

Main machine diagram (front view window reserved)

Above legend: Remove the soil box and push it into the rain shower device

3. Rain system (as shown in the picture)

By adjusting the flow rate of the pump and the Angle and number of sprinkler heads, the maximum point rainfall can be adjusted to simulate the specific form of rain in light rain and flash flood, and verify the anti-erosion performance of different soil angles.

After the sample compression is completed, the coiling plate is removed, and the rainforest system simulation vehicle is pushed into the frame. After connecting the waterway, the water output and spray Angle are adjusted according to needs. The position of the Angle cylinder is adjusted through the hydraulic system to achieve different inclination angles.

4. Multi-channel coordinated loading control software

1. The product uses powerful AJTestV3.0 full digital multi-channel servo control system. By the servo actuator, load sensor, displacement sensor, digital closed-loop control software and computer together with the servo hydraulic station to form a closed-loop measurement control operating system, therefore, you can set and select a variety of test procedures, can automatically and accurately control the test process, and automatically measure the test parameters at each stage, to ensure the high precision of the test.

2. The special test software is developed under the windows platform to ensure that the test operation is simple and universal, the test data processing, storage, transmission is easy and convenient, and the test process curve is displayed on the monitor in real time.

3. It can realize long-term continuous rapid loading, load holding and unloading, and closed-loop control such as equal rate loading, long time load holding, equal rate unloading and equal rate displacement.

4. The main functions of the main interface of the software include: constant stress control, constant displacement control, constant deformation control, constant displacement speed control, constant force speed control, constant deformation speed control, and certain cycle steps can be set. And it can realize no impact conversion between various control modes and realize automatic closed-loop control.

Above legend: repeated loading test curve

5. Examples of programming control functions:

Step 1: Displacement control: 0.8(mm/s), target load: 10 (kN), holding time 20 seconds.

Step 2: Load control: 2 (kN/s), target stress: 30 (MPa), holding time 1 minute.

Step 3: Displacement control: 0.5(mm/s), target load: 80kN, holding time 1 hour.

Flexible setting, more maneuverability!

6. Can display a variety of curves: force - time, force - displacement, displacement - time, force - deformation, deformation - time, etc.

7. Software interface integrated control function, can set the control mode, powerful function, won the national scientific research workers warm praise.

8. Data collection and analysis function: real-time collection of test receipts and dynamic display of test characteristic curves can be realized.

9. Can handle the curve of test force, displacement, time and deformation.

10. Overload and limit protection function: with software and mechanical two-level limit protection, automatic stop protection when the load exceeds 10% of the rated value.

11. The test data is managed by database, which is easy to query and maintain.

5. Large stroke high precision servo cylinder

The sealing components of the hydraulic cylinder are all imported special high-speed sealing components. The support of the piston rod breaks the traditional design, adopts non-metal support, large gap design, and has the characteristics of high-speed non-sintering self-lubrication. The hydraulic buffer zone is designed at the amplitude limit position of the servo linear actuator to avoid damage to the actuator caused by running out of control.

1. One servo cylinder with large stroke and high precision.

Maximum test pressure: 2500kN;

Maximum stroke: 400mm; Single rod double action;

Speed: 0.1 ~ 100mm/min (can quickly rise and fall, can also be maintained by constant stress)

Test accuracy: ±1%

Actuator displacement resolution: 0.001mm

Force resolution: 1/500000 yards;

Effective measuring range of test force: 1%-100%;

High precision force sensor

Displacement sensor measurement;

6. Electro-hydraulic servo silent oil source

1. Servo pump station: Servo pump station is a new silent oil source, using servo motor to drive the oil pump to provide power, can automatically select the motor speed according to different loading forces, to provide a constant and continuous power source. This series of products has the characteristics of easy to use, stable pressure output, good reliability and low noise. The overall performance is equivalent to the international advanced product technology level. The rated pressure of the series pump station can be adjusted stepless within 0-40MPa, and the system flow can be adjusted according to the test requirements to maximize energy saving. This series of pump stations has been widely used in various electro-hydraulic servo loading test systems.

2. The pumping station is composed of metal frame shell, oil tank, oil pump electric unit, pipeline, electric control system, filtration system and other parts.

3. The pump station oil tank is fully enclosed to prevent external impurities from entering the hydraulic system and polluting the hydraulic oil.

4. The oil pump and electric unit are configured with double elastic support in series, and the shock absorption mechanism is used to further reduce the noise of the pumping station.

5. Using multiple groups of oil pump electric units in parallel, can be used in any combination according to the test requirements, saving energy.

6. System pressure adjustment: PID adaptive function is used to adjust the system pressure and control the hydraulic system overflow to reduce the pressure adjustment error; To provide stable system pressure for electro-hydraulic servo test system, pressure output accuracy of ±1%.

7. The hydraulic module composed of the main relief valve, the inlet and return oil circuit, the safety valve and the reversing valve, and the precision oil filter is used to adjust the pressure of the output system of the pump station and the precision filtration, which can effectively prevent the impact of the hydraulic system when working;

8. The pump station is equipped with oil suction filter, precision filter and oil return filter. The precision filter has a filtration accuracy of 5μm to protect the hydraulic oil from pollution.

9. The pump station is equipped with temperature control meter, level meter, pressure sensor and other necessary sensors; With oil temperature alarm, liquid level alarm, motor overload protection and other safety alarm functions.

10. Standard high precision 5μm high pressure oil filter.

11. Motor power: 1.5kW;

12. No cooling system, no outdoor cooling tower construction, more energy saving and environmental protection, no noise pollution;

7. Physical display of related equipment

(Physical display of our equipment)