DYE-2000S Concrete Constant Stress and Pressure Testing Machine Computer Constant Stress and Pressure Testing Machine Computer Fully Automatic Constant Stress and Pressure Testing Machine Fully Automatic Constant Stress and Pressure Testing Machine
1Concrete constant stress pressure testing machineMain purpose:
The concrete constant stress pressure testing machine is used to determine the compressive strength of building materials such as bricks, stones, and concrete. This machine is used for electric hydraulic loading, sensor force measurement, digital display of force values, printer printing of force value data, and conversion of compressive strength. This testing machine complies with the national standard "Standard for Test Methods of Mechanical Properties of Ordinary Concrete", and should manually control the loading speed. It also has a loading speed indicator device, peak holding, and overload protection functions. It is a testing and inspection equipment for construction, building materials, highway bridges, and other engineering units.
IIConcrete constant stress pressure testing machineMain technical parameters:
1. Z large load: 2000KN
2. Accuracy of indication: Level 1
3. Small resolution value: 0.1KN
4. Large distance between pressure plates: 320mm
5. Specification of upper and lower pressure plates: 220 × 250mm
6. Piston diameter x z, large stroke: diameter 250 x 30mm
7. Motor power: 0.75KW
8. Input voltage: 380V
9. Dimensions: 880 × 480 × 1400mm
10. Net weight: 850kg
IIIConcrete constant stress pressure testing machineStructure Introduction:
The testing machine is mainly composed of three parts: the organic body, the hydraulic control box, and the force measuring instrument.
1. Body parts
The testing machine body is connected to the cylinder body and upper beam by four columns. An adjusting screw is installed on the upper beam of the testing machine, and the idle height of the testing machine can be adjusted by a large hand wheel and nut screw. The lower end of the screw is equipped with a ball seat and an upper pressure plate. The lower pressure plate is placed on the piston of the oil cylinder. When the specimen comes into contact with the upper pressure plate, the upper pressure plate seat can self adjust and balance, keeping the specimen horizontal with the upper and lower pressure plates. The lower pressure plate is engraved with a marking line for locating the test piece. During the test, the test piece should be aligned with the marking line. A dust cover is installed under the lower pressure plate to prevent or reduce dust from entering the oil cylinder and damaging the cylinder body or oil seal during piston lifting. There is a sealing device between the piston and the oil cylinder to prevent oil leakage. However, when there is still a trace of oil leakage from the piston during use, there is a circular oil groove at the top of the cylinder body and a drainage channel to discharge it back to the large oil tank.
2. Hydraulic control part
The control box of this testing machine mainly consists of an oil tank, an oil pump, an oil filter, an electric motor, a speed valve, a return valve, etc. The oil pump is a direct rotating axial five column pump. When the testing machine is loaded, the loading speed valve should be manually controlled to control the speed of piston rise (this speed is integrated with the safety valve). When unloading, the return valve can be rotated, and the oil cylinder will slowly descend. The testing machine has already adjusted the safety valve to the appropriate position at the factory, and users cannot adjust the safety valve during normal use.
3. Please read the instrument manual carefully for the instrument section
4Concrete constant stress pressure testing machineInstallation of testing machine:
1. When lifting the testing machine, thread the lifting wire into the lifting ring screw at the top of the screw rod.
2. The testing machine is installed on a stable foundation about 20 centimeters above the ground, and two M16 anchor bolts should be pre embedded. The dimensions are shown in the foundation diagram.
3. When installing the testing machine, use a 1/1000 frame level to measure the plane of the lower pressure plate, so that the lower pressure plate is in a horizontal state. If it is not horizontal, adjust it with a pad (pad iron is placed under the nut under the column), and then tighten the testing machine to the foundation.
5Concrete constant stress pressure testing machineOperation steps:
1. Add clean 46 # anti-wear hydraulic oil into the oil tank at the refueling port to the liquid level shown in Figure 2.
2. Connect the power supply to start the motor (power supply voltage 380V 50Hz)
3. Close the return valve and turn the speed valve counterclockwise to supply oil, causing the piston to lift away from the cylinder bottom.
4. Place the specimen in place, adjust the height of the screw, and adjust it to a distance of 1-2mm from the upper pressure plate.
5. When the specimen has not yet come into contact with the upper pressure plate, the adjustable speed valve can quickly rise. After the specimen comes into contact with the upper pressure plate, adjust the speed valve appropriately according to the loading speed to apply load until the specimen is crushed.
6. After the specimen is broken, open the return valve to make the piston fall back. After removing the broken specimen, close the return valve to proceed with the next test. When opening the return valve, be sure to slow down the speed.