YAW-20000J

Electro-hydraulic servo compression shear testing machine YAW-20000J is a high-precision material testing equipment that can realize closed-loop control and automatic testing, adopts hydraulic drive, electro-hydraulic servo control, computer data acquisition and processing.
It is mainly composed of mainframe, shear frame, rotation angle measurement frame, main oil source (hydraulic power source), electrical control system, etc. The maximum test force is 20000kN, with a high accuracy.
It is mainly used for the mechanical test of axial and radial compressive, shearing and rotation angle of the plate and pot rubber bearings of various bridges under the complex conditions of compression and shear resistance; it can test the compressive strength, compressive elastic modulus, shear bonding performance, shear aging resistance, friction coefficient, and rotation angle of rubber bearings, as well as the elastic modulus and compressive properties of concrete and other material samples.

TECHNICAL PARAMETERS

VERTICAL LOADING SYSTEM
Maximum vertical test force: 20000kN;
Resolution: ≤0.1kN
Measurement range: 2%-90%FS(400-20000kN)
Measurement accuracy: ±1.0%
No-load maximum displacement speed of oil cylinder: 0-50mm/min(Stepless adjustable)
Beam lifting speed: 150mm/min
Maximum stroke of oil cylinder: 300mm
Displacement measurement accuracy: ±1.0%
Deformation measurement resolution (mm): 0.001 (vertical deformation), 0.001 (radial deformation);
Deformation measurement: Four grating digital displacement sensors measure the vertical deformation of the sample; four grating digital displacement sensors measure the radial deformation of the sample;
Deformation measurement range: 0~50mm (vertical deformation); 0~20mm (radial deformation);
Deformation measurement accuracy: ±0.5%;
Test adjustment space: 0~1500mm;
Maximum test space: 1500mm;
Upper pressure plate size: 1500mm×1500×240mm;
Lower pressure plate size: 1500mm × 1500 × 240mm (with scale lines for easy sample installation and alignment);
Isokinetic test force control range: 0.5kN/s ~ 30kN/s (control accuracy 1%);
Isokinetic displacement control range: 0.5mm/min ~50mm/min;
Control mode and data processing: computer servo control system and data (force, displacement) graphic acquisition and processing, etc.;
Force measurement method: use high-precision load sensor to measure force;
The low damping combined sealing element keeps the test force stable and reliable;
Control mode: hydraulic loading, electro-hydraulic servo closed-loop control, high-precision oil pressure sensor measurement, screen display.

HORIZONTAL SHEAR TEST PART
Maximum test force: 4000kN;
Test force measurement range: 2%-90%FS (80kN ~4000kN);
Resolution: ≤0.1kN;
Accuracy: ≤±0.5%;
Adopts single-rod double-acting piston cylinder, piston stroke is 300mm;
Propulsion speed of piston: 0~100mm/min (stepless adjustable);
Support span for horizontal shear: 40mm ~ 600mm (excluding shear plate thickness);
Deformation measurement range: 0～200mm;
Deformation measurement accuracy: ±0.5%FS;
Deformation measurement resolution: 0.001mm;
Displacement measurement range: 0~300mm;
Displacement measurement accuracy: ±1.0%FS
Displacement and deformation measurement: two grating digital displacement sensors measure the shear deformation of the sample;
Force measurement method: high-precision load cell;
Advance and retreat of horizontal shearing device: motor driven;
Horizontal shear device vertical floating coordination mechanism: floating hydraulic cylinder adjustment;
The shearing plate is consistent with the movement axis of the horizontal shearing cylinder, and does not swing left and right;
Hydraulic loading: Servo pump valve dual channel control system.
Load holding function: 30s fluctuation can be better than 0.5%, multi-level control of transverse shear force;
Adopts combined sealing elements to prevent hydraulic oil leakage.
Control mode: Servo pump valve dual-channel control system. Hydraulic loading, high-precision load cell measurement, microcomputer screen display test parameters and curves.

ROTATION ANGLE TEST PART
Maximum torque of rotation: 1200kN•m;
Rotating arm: 1000mm;
Maximum rotating ejection force: 1200kN;
Test force measurement range: 2%~90%FS (24kN~1200kN);
Test force accuracy: ≤±0.5%;
Load resolution: 0.1kN;
Force measurement method: high-precision load cell;
Deformation measurement: Four grating digital displacement sensors measure the overturning deformation of the sample;
Deformation measurement range: 0～50mm;
Deformation measurement resolution: 0.001mm;
Deformation measurement accuracy: ±0.5%FS;
Maximum piston stroke: 300mm;
Piston moving speed: 0~100mm (stepless adjustable);
Displacement measurement range: 0~300mm;
Displacement measurement accuracy: better than ±1.0%FS;
Rotation angle board size: 1500*1800*120mm;
Hydraulic loading, microcomputer servo automatic control, high-precision load sensor measurement, screen display;
Load holding function: 30s volatility can be better than 0.5%, multi-level control of rotation angle force;
Adopts combined sealing elements to prevent hydraulic oil leakage.
Control mode: Servo pump valve dual-channel control system. High-precision load cell measurement, screen display.