YAW-3000A microcomputer controlled electro-hydraulic servo pressure testing machine

Function and structure

YA YAW-3000A microcomputer-controlled electro-hydraulic servo pressure testing machine is mainly used for compression testing of various materials, such as cement, concrete, various building bricks, rubber mats, concrete members, metal members and other compressive strength tests.

 

The whole test machine consists of main engine, servo oil source, electric control cabinet and computer printer. The hydraulic loading, oil pressure sensor force measurement, electro-hydraulic servo control system automatically control the test process, and the computer screen displays test data and curves for data processing, storage and printing.

 

?The main engine adopts the movable beam main unit under the cylinder, and the movable beam can adjust the test space arbitrarily within a certain range. The main part is mainly composed of a beam, a lead screw, a workbench and a trolley. The beam is supported by the second screw on the base, and is fastened by a nut to form a loading frame; the beam is provided with a spherical seat, and the upper pressing plate is mounted on the spherical seat. When loading, the direction can be automatically adjusted according to the shape of the test piece, so that the test is performed. The force is evenly distributed; the beam is equipped with an adjustment motor, the motor drives the worm, the worm drives the worm wheel, and then the worm wheel drives the wire to rotate, and the wire moves the beam up and down to adjust the test space; the beam is spring loaded to support the beam The weight eliminates the gap between the female thread and the screw thread in the vertical direction, which makes the test reliable and accurate; the cylinder and piston are the main parts of the main machine, and their contact surfaces are precision machined to maintain a certain fit clearance and appropriate The oil film, when the high-pressure oil sent by the oil pump enters the cylinder, holds the piston together with the trolley, the lower pressure plate, etc., so that the load gradually acts on the sample; the lower pressure plate is mounted on the trolley, and the trolley can move back and forth on the track. The loading and unloading test pieces can push and pull out the trolley.

 

The hydraulic principle is the load-adapted oil inlet throttle control system. The hydraulic oil in the oil tank enters the oil passage through the high-pressure gear pump driven by the motor, and flows through the check valve, the high-precision high-pressure oil filter, the differential pressure valve group, and the servo valve to enter the oil cylinder. The computer sends a control signal to the servo valve to control the opening and direction of the servo valve, thereby controlling the flow into the cylinder and achieving control of constant velocity test force, relative displacement, and the like.

 

YA YAW-3000A microcomputer-controlled electro-hydraulic servo pressure testing machine is mainly used for compression testing of various materials, such as cement, concrete, various building bricks, rubber mats, concrete members, metal members and other compressive strength tests.

 

?The whole test machine consists of main engine, servo oil source, electric control cabinet and computer printer. The hydraulic loading, oil pressure sensor force measurement, electro-hydraulic servo control system automatically control the test process, and the computer screen displays test data and curves for data processing, storage and printing.

 

?The main engine adopts the movable beam main unit under the cylinder, and the movable beam can adjust the test space arbitrarily within a certain range. The main part is mainly composed of a beam, a lead screw, a workbench and a trolley. The beam is supported by the second screw on the base, and is fastened by a nut to form a loading frame; the beam is provided with a spherical seat, and the upper pressing plate is mounted on the spherical seat. When loading, the direction can be automatically adjusted according to the shape of the test piece, so that the test is performed. The force is evenly distributed; the beam is equipped with an adjustment motor, the motor drives the worm, the worm drives the worm wheel, and then the worm wheel drives the wire to rotate, and the wire moves the beam up and down to adjust the test space; the beam is spring loaded to support the beam The weight eliminates the gap between the female thread and the screw thread in the vertical direction, which makes the test reliable and accurate; the cylinder and piston are the main parts of the main machine, and their contact surfaces are precision machined to maintain a certain fit clearance and appropriate The oil film, when the high-pressure oil sent by the oil pump enters the cylinder, holds the piston together with the trolley, the lower pressure plate, etc., so that the load gradually acts on the sample; the lower pressure plate is mounted on the trolley, and the trolley can move back and forth on the track. The loading and unloading test pieces can push and pull out the trolley.

 

The hydraulic principle is the load-adapted oil inlet throttle control system. The hydraulic oil in the oil tank enters the oil passage through the high-pressure gear pump driven by the motor, and flows through the check valve, the high-precision high-pressure oil filter, the differential pressure valve group, and the servo valve to enter the oil cylinder. The computer sends a control signal to the servo valve to control the opening and direction of the servo valve, thereby controlling the flow into the cylinder and achieving control of constant velocity test force, relative displacement, and the like.