Ultra high voltage anti bias load structure:
The cylinder barrel is made of 42CrMo alloy forgings and ultra precision honing (roundness error ≤ 0.02mm), which can withstand top plate inclination deviation load within 5 °, and support force eccentricity error ≤ 3%, avoiding cylinder body deformation caused by deviation load;
The surface of the active column is coated with tungsten carbide by supersonic spraying (thickness 0.5-0.8mm, hardness ≥ HV1500), which improves the wear resistance by 5 times compared to traditional chrome plating and is suitable for frequent pressure conditions on the top plate.
Intelligent constant resistance pressure system:
Built in pressure displacement dual feedback pressure relief valve group, automatically yielding 30-80 mm when the top plate pressure exceeds 10% of the rated resistance. During the pressure relief process, the support force fluctuates by ≤± 5%, releasing concentrated stress in the rock layer and preventing sudden collapse of the top plate;
Dynamic response time ≤ 0.1s, suitable for the support requirements of rapid advancement (daily advancement ≥ 8 meters) of fully mechanized mining face.
Adaptability to extreme working conditions:
Temperature resistance -30 ℃~+70 ℃, stable operation can still be achieved in high altitude (≥ 4000 meters) and high humidity (humidity ≥ 95%) environments;
The impact resistant design can withstand 100g acceleration vibration (in accordance with ISO 16750-3 standard) and is suitable for strong vibration conditions during working face mining.
Modular and efficient maintenance:
Adopting a split design of cylinder barrel and active column, the replacement time of key components (such as seals and valve groups) is reduced by 60%, and the maintenance cycle is extended to 1200 hours;
Weight reduction of 18% compared to traditional columns with the same parameters (such as a cylinder diameter column with a diameter of less than or equal to 1.2 tons), combined with support trucks to achieve rapid installation and improve the efficiency of working face relocation.
