Shandong single hydraulic prop manufacturers maintenance of mining hydraulic support maintenance methods are recommended as follows:
(1) Hydraulic support maintenance with gas cutting side guard plate of each part of the edge, the spur and other defects, the bottom plate and the main rib ear plate welding crack parts cut welding groove, and the serious deformation and damage of the twisted ear plate cut and welded new;
(2) shaping with hydraulic press;
(3) Replace the hydraulic support structural parts with new parts that have an impact on the performance and are seriously deformed.
(1) use gas cutting to cut the burr of the twisted ear seat, the damaged twisted ear seat of the hydraulic support, the fixed side guard plate with serious deformation connected to the top beam, and the damaged side guard plate limit block;
(2) The local deformation of single hydraulic prop is small with hydraulic machine shaping, large area deformation of the side guard plate, east wave pressure support maintenance using a special correction platform, oxygen with heating, the use of appropriate cylinder correction;
(3) For the hydraulic support with cracks in the weld, first cut clean, and then preheat re-welding; Aging welding stress of top beam after welding;
(4) Replace the hydraulic support structural parts with new parts that have an impact on the performance and are seriously deformed.
(1) Remove the damaged parts of the Siamese side guard plate with oxygen; To remove other parts of the crimping, thorns, etc.
(2) For small local deformation of Single hydraulic prop, use hydraulic machine to shape; for large area deformation of side guard plate, use special correction platform, oxygen with heating, use appropriate oil cylinder for correction;
(3) For the shielding beam with a large area of welding cracking, the cracked cover plate is removed, and the groove is opened, and the welding is filled. After welding, the shielding beam needs aging welding stress;
(4) Replace the structural parts with new parts that have serious deformation and affect the service performance.
Single hydraulic prop maintenance on the crack of the place need to be weld cut clean, and then preheating welding; After welding, aging welding stress is needed to scrap all the connecting rod with serious deformation.
(1) Use oxygen to remove the crimping and spines of severely damaged parts;
(2) Use oxygen with heating to correct deformation of rubber pipe, valve base, pedal positioning block, etc.;
(3) Cracking of the column nest, first cut clean, and then preheating welding; Replace the cracked column socket with a new one.
(1) the structural parts (top beam, shield beam, telescopic beam, side guard plate, base) are respectively laid out, and the rust parts are removed with an iron brush;
(2) Spray (paint) the specified paint after cleaning the rust, and place it separately until dry.
