300 ton constant stress pressure testing machine

1main purpose

300 ton constant stress pressure testing machineUsed to measure the compressive strength of building materials such as bricks, stones, and concrete.

This testing machine complies with the national standard "Standard for Test Methods of Mechanical Properties of Ordinary Concrete", and should be computer-controlled for loading speed. It also has loading speed indicator device, peak holding, overload protection function, and is a testing and inspection equipment for construction, building materials, highway bridges and other engineering units.

II300 ton constant stress pressure testing machineMain technical parameters

1Maximum load: 3000KN

2Accuracy of indication: Level 1

3Minimum resolution value:0.1KN

4Maximum distance between pressure plates:350mm

5Specification of upper and lower pressure plates:300×250mm

6Piston diameter*Maximum travel:diameter290×40㎜

7Motor power:0.75KW

8Input voltage:380V

9External dimensions:980×480×1400㎜

10Net weight:950kg

3、 Structure Introduction

The testing machine is mainly composed of three parts: organic body, solenoid valve, and computer control panel.

1Body parts

The testing machine body is connected to the cylinder body and upper beam by four columns

On the upper crossbeam of the testing machine, there is an adjustable screw, a large handwheel, and a nut screw that can be adjusted

The empty height of the entire testing machine is equipped with a ball seat and an upper pressure plate at the lower end of the screw. 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. When conducting 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.

1Hydraulic control part

The control box of this testing machine mainly consists of an oil tank, an oil pump, an oil filter, an electric motor, an electromagnetic valve, etc. The oil pump is a direct rotating axial five column pump. The safety valve of the testing machine has been adjusted to the appropriate position at the factory, and the user cannot adjust the safety valve during normal use.

2The program section is equipped with a CD.