{"html":"\n \n \n \n \n\n \n Normal\n 0\n \n \n \n 7.8 lbs\n 0\n 2\n \n false\n false\n false\n \n EN-US\n ZH-CN\n X-NONE\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\n\n\n

This computer controlled electro-hydraulic servo compression testing machine is mainly used to measure the compressive strength, splitting, axial compression, Poisson's ratio, elastic modulus and other mechanical performance indexes of concrete, self-repairing concrete, plastic concrete, ultra-high strength concrete, cement components and other materials. The machine adopts high-precision digital servo valve to control the loading, and the digital servo valve adjusts the loading rate in real time through calculation according to the data fed back by the sensor. The force value collected by the sensor is displayed on the display through the CPU calculation.

The machine adopts AC220V, mainly used for concrete compression strength test in lab. It is also applicable for compression strength test to firebrick and other material. It meets the standard request of GB/T50081-2002 “Common Concrete Mechanical Property Test Method”, JJG139-1999 “Tension, Compression and Universal Testing Machine (Verification Regulation)”, GB/T2611-92 “Testing Machine Common Technology”. It also meets the request of ISO, JIS, ASTM, DIN and so on.

l  With overload protection function, when the force value exceeds 2% - 5% of the rated maximum force value, the motor will stop automatically.

l  After the test of a single test piece, the user can set the piston drop time on the software test interface according to the characteristics of the test piece to make the piston drop to any reasonable height, which can greatly shorten the test time and improve the working efficiency several times compared with the original test machine.

l  The frame structure of the testing machine reduces the back clearance error of the bolt fixed by the compression bar and enhances the reciprocating stability of the whole machine. (consistent with EN standard and ASTM)

l  Using touch screen, keyboard dual control mode, more convenient operation, to meet the preferences of different technicians.

l  The oil output of oil pump is 4.5l/min, and that of common CTM is 0.9l/min, which greatly increases the oil output.

l  Large cylinder section, all steel refining

l  The piston is made of cast iron with a maximum stroke of 80mm.

l  The protective cover plays a safety role, and adopts laser cutting technology and numerical control bending technology, with good rigidity, beautiful appearance and convenient use.

l  Surface treatment technology: the paint of the whole machine adopts plastic spraying technology, which is wear-resistant, dirt resistant and easy to clean; the surface of the cushion block and the pressing plate is galvanized, beautiful and rust proof; the surface of the integrated block is blackened to achieve the purpose of rust prevention; the hard pipe of the oil pipe is phosphatized to prevent rust and corrosion; the surface of the joint is galvanized and blackened to prevent rust.

l  There are sealing washers at the joint with oil cylinder and ferrules at the joint with oil pipe, which play a sealing role and prevent oil leakage.

 

The test instruments and equipment in GBT50081-2019 standard shall meet the following requirements:

1.       The relative error of indication should be ± 1%;

2.       It shall have loading speed indicating device or loading speed indicating device or loading speed control device, and shall be able to load uniformly and continuously;

3.       The flatness tolerance of the upper and lower platens of the testing machine shall not be greater than 0.04m m; the parallelism tolerance of the upper and lower platens shall not be greater than 0.05mm; the surface hardness shall not be less than 55HRC; the plate surface shall be smooth and flat, and the surface roughness Ra shall not be greater than 0.80 μ m;

4.       The ball socket shall rotate flexibly; the ball socket shall be placed on the top surface of the test piece and the convex surface shall face upwards.

The E-type testing machine meets the GBT50081-2019 standard, and its manufacturing accuracy is as follows:

Ø  The flatness tolerance of pressing plate of e-type testing machine is less than 0.016mm;

The parallelism £ of upper and lower platens is less than or equal to 0.1 μ m;

The platen hardness is higher than 55HRC;

The surface roughness Ra of pressing platen is less than 0.8 μ m;

And the crushing direction of the specimen is vertical.

Ø  The co-axiality of the cylinder of the testing machine is less than 0.02mm;

Cylindricity / ○ / less than 0.02mm;

The roughness Ra is less than 0.8 μ m;

The tolerance between cylinder and piston is less than 0.02m,

Ø  The coincidence degree of the contact surface of the ball seat of the testing machine is greater than or equal to 90%;

The surface roughness Ra is less than 0.2 μ m;

The ball seat is under the upper crossbeam of the testing machine, and the shaking is flexible.

Ø  The parallelism £ of the upper and lower crossbeams of the main frame of the testing machine is less than 0.02mm;

Co-axiality φ less than 0.03mm;

Deformation under maximum force value is less than 0.05mm

 

Patent

Industrial design patent ZL 2019 3 0466190.X

Utility model patent ZL 2014 2 0460320.0

Utility model patent ZL 2012 2 0300276.8

Utility model patent ZL 2010 2 0581630.X

Utility model patent ZL 2017 2 1257894.8

 

Production introduction

This machine is composed of two parts: the main frame and the control cabinet.

1.       Main frame

The main engine is composed of frame, ball seat, upper pressing platen, lower pressing platen, and oil cylinder piston.

2.       Control cabinet

The control cabinet is composed of oil pump, motor, and high-precision digital servo valve.

After the oil pump is electrically connected with the motor, it is fixed on the mailbox at the lower part of the control cabinet, and the connecting plate of the digital servo valve is set at the upper right part of the oil tank. The measurement and control box is located on the upper part of the control cabinet. When the force is applied, the high-pressure oil from the oil pump enters the pressure reducing valve and the digital servo valve, and the digital measurement and control system controls the digital servo valve for servo loading according to the preset loading rate. During unloading, the high-pressure oil from the oil cylinder flows back to the oil tank through the servo valve to unload.

 

Controller function and characteristics

1)      The controller adopts 32-bit high-speed processor chip, which can meet the requirements of speed data acquisition, operation processing and control, realize high-precision, high-speed closed-loop control, and data online transmission

2)      The high-speed 24 bits A/D converter is adopted, and the code value reaches 600000, which meets the requirements of high-speed and high-precision sampling.

3)      The digital hydraulic valve driven by computer is used to control the flow and pressure of the hydraulic oil circuit to achieve high precision control.

4)      It has perfect protection device, including overload protection interface and software overspeed monitoring, which can effectively avoid overspeed and over range of the testing machine

5)      In the aspect of software, the fully digital linear correction of sensor is adopted to ensure the acquisition accuracy.

6)      Adopt over sampling method to improve PID control accuracy

7)      It can realize constant speed loading, load holding, constant speed unloading and other functions, and the loading speed can be set arbitrarily

8)      Provide network port or serial port to realize data upload flexibly.

Controller parameters

Voltage

220V±10%

Power

100W

resolution

600000 code value

Sampling speed

10/25/50/100Hz（Optional when order）

Communication

Option: COM/ethernet port/USB

Precision

0.2% / 0.5% / 1% (Optional when order)

 

3.       Software

1)      Software interface has COM port, network port, USB interface and other ways, which can dynamically adapt to different computer hardware conditions.

2)      The measurement and control software adopts desktop design, which has the characteristics of beautiful interface, powerful function and simple operation, and can be used on win7 / win10.

3)      The software displays the \"load-time\" test curve in real time. The test curve can be zoomed in or out locally by using the mouse frame.

4)      The displayed load, strength, loading speed, time, etc. and the number of decimal points can be configured dynamically.

5)      Automatic determination of test process, automatic recording of test results, to ensure the scientific and accurate test results.

6)      The print format can be configured dynamically

7)      The software uses different levels of user login system, different users have different operation rights, the manufacturer's users have the rights to include debugging functions, the administrator has the rights to set advanced parameters, and the general users only use the test operation rights. It can well manage the authority of all levels of functions.

8)      The software has strong expansibility and can expand the test type infinitely. Different upload modules can be configured to match different upload methods and different upload software.

9)      In the force value calibration, the software has the original function of calculating the ad value of uncalibrated punctuation, which can shorten the time of rough calibration.

10)   The software adopts the double backup mechanism for the force calibration data, which has backup in both the software and the controller to realize double insurance.

11)   The calibration data in the software is saved in the form of log, which can be recovered to any previous calibration data by querying the log.

 

Main technical parameters

\n \n Normal\n 0\n \n \n \n 7.8 lbs\n 0\n 2\n \n false\n false\n false\n \n EN-US\n ZH-CN\n X-NONE\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\n\n\n

Max. test force

3000KN

Force range

2~100%F.S

Test force relative error

≤±1%

Resolution

1/300000F.S.

Constant speed force control range

2%~4%F.S./s

Speed control error

≤±2% of set value

Distance between two columns

340mm

Piston stroke

80mm

Distance between platens

320mm

Platen size

φ295mm

Test space

435*435*110~310mm

Max. piston speed

40mm/min

Motor power

2.2kW

Machine size

1010x590x1330mm

Weight

1200kg

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