Product name: YAW-E rock unixial compression deformation testing machine 
Product introduction
The machine is mainly used for determination of rock elastic modulus, Poisson's ratio, compressive strength and other mechanical parameters of the rock uniaxial compressive deformation and compressive strength tests. Highway, railway, bridge, construction, building materials, universities and colleges, Survey Institute industry laboratory of necessary equipment.
One, Technical description and scope of use
1. This machine is mainly used for the determination of rock elastic modulus, Poisson's ratio, compressive strength and other mechanical parameters of the rock uniaxial compressive deformation and compressive strength tests. Highway, railway, bridge, construction, building materials, universities and colleges, Survey Institute industry laboratory of necessary equipment.
2. The host uses the high strength frame, the machine structure is compact, rational layout. Control unit by computer and a hydraulic system. Test data can be arbitrary access, and can realize the analysis of the data and curves of the, local amplification and data, specimen, the environment, the test conditions of re editing, and print out the complete test report and curve.
3. This series of products in full compliance with the GB/T2611-2007< testing machine general technical requirements of universal >JJF1103-2003< test machine computer data acquisition system assessment >JJG139 - 1999< tensile, compression and universal testing machine verification regulation of >GB/T16826-2008< electro hydraulic servo universal testing machine > requirements, in accordance with the requirements GB/T50266-2013< rock test method standard > and so on standard, rock uniaxial compressive deformation and compression strength test.
Two, function and technical parameters

Specification model	YAW-E series
Test force measurement range	600kN	1000kN	2000kN
Test force indication accuracy	≤显示值的±1%
test force measurement resolution	0.005%FS
displacement measurement	photoelectric encoder measuring piston stroke
Relative error of displacement indicatio	±1%
displacement measurement resolution	0.005mm
The displacement value display	the direct reading of the computer screen display
load and other rate control range	0.1～4%FS/s
Equal rate control accuracy	±5%
constant test force rate control accuracy	±3% set value
The bearing plate size	∮300 mm
maximum compression space	350mm
piston stroke	50mm
Two column spacing	270*200
piston diameter	∮250mm
hydraulic pump rated pressure	40Mpa
unloading speed	4mm/s

hydraulic system
1. hydraulic principle is the load adaptive feed throttle speed control system.
2. the fuel tank of the hydraulic oil through the motor drive high-pressure gear pump into the oil, through the one-way valve, 10 mu of high pressure oil filter, differential pressure valve, servo valve into the cylinder. Computer sends a control signal to the servo valve, servo valve to control the opening and the direction, so as to control the flow into the cylinder, realize isokinetic test force, constant displacement control.
control system
1. Win7 operating platform;
2. in order to manually control the process of testing, the completion of the test machine test data screen display.
3. has the test force, the peak, the test specimen deformation, the piston displacement, the test curve of the screen display function;
4. can meet the requirements of GB/T50266-2013< engineering rock mass Test Method Standards > and etc.;
5. to finish the rock uniaxial compression deformation and compressive strength test, calculated from the rock elastic modulus, Poisson's ratio, compressive strength     and other mechanical parameters
applicable standards and data processing
1. users can customize the data processing software that meets the requirements of the national standard or other standards;
2. test process can simulate the reproduction and re analysis of the test data.
safety protection device
1. 2%-5% when the test force exceeds the maximum test force of each file overload protection, system unloading;
2.  when the piston rises to reach the limit position, the stroke protection, pump motor stop;
3.  has over current, over voltage, over temperature protection.