Release time：2023-11-07 17:47:37 Hits： Current position: Home > News
This article mainly introduces:
Sweden hydraulic cylinder,construction machinery hydraulic cylinder manufacturer,construction machinery hydraulic cylinder
(Sweden construction machinery hydraulic cylinder,produced by Hengyu Hydraulic Cylinder Factory）
construction machinery hydraulic cylinder are widely used in Sweden，because of clever hydraulic energy conversion，simple structure and reliable operation，excellent temperature resistance.So our company has designed construction machinery hydraulic cylinder for customers from Sweden.
The construction machinery hydraulic cylinder can not be used as grounding electrode to avoid electric damage to the piston rod.
The definition of the minimum starting pressure of the construction machinery hydraulic cylinder refers to the minimum working pressure of the construction machinery hydraulic cylinder in the no-load state, which is a comprehensive index reflecting the manufacturing and assembly accuracy of the construction machinery hydraulic cylinder parts and the size of the sealing friction.
If it is found that the construction machinery hydraulic cylinder lubrication is poor or the construction machinery hydraulic cylinder bore processing is abnormal, it is necessary to feedback the situation to the manufacturer, because the piston and the construction machinery hydraulic cylinder, the guide rail and the piston rod have relative movement, if the lubrication is poor or the construction machinery hydraulic cylinder bore is abnormal, it will aggravate the wear and reduce the straightness of the construction machinery hydraulic cylinder center line. In this way, when the piston works in the construction machinery hydraulic cylinder, the friction resistance will be large and small, resulting in slip or crawling. The solution is to repair and grind the construction machinery hydraulic cylinder first, and then prepare the piston according to the matching requirements, repair and grind the piston rod, and configure the guide sleeve.
Most of the failure of the construction machinery hydraulic cylinder is because there is a foreign body in the construction machinery hydraulic cylinder into the failure of the construction machinery hydraulic cylinder, the most problematic is that it is difficult to determine when the foreign body is into the construction machinery hydraulic cylinder. After a foreign body enters, if the outer side of the sliding surface of the piston is equipped with a seal with a lip edge, then the lip edge of the seal can scrape the foreign body when working, which is beneficial to avoid scratching. However, the piston equipped with 0-shaped sealing ring has a sliding surface at both ends, and foreign bodies are sandwiched between this sliding surface, which is easy to form scars.
How to judge the failure of forklift hydraulic cylinder?
The common faults of the hydraulic cylinder of forklift truck are mainly crawling, insufficient thrust, working speed decline or even stop. Generally, crawling occurs at low speed. The main reason is that the air stored in the cylinder is not cleared. In addition, excessive or uneven mechanical friction can also cause crawling. Such as the piston and the piston rod different heart, the piston rod full length or local bending, the cylinder hole straightness is poor, the cylinder is drum shaped or has a large taper, the cylinder thin finish decline or produce hair, the cylinder installation accuracy is out of whack, the piston rod nuts at both ends of the screw too tight to make its concentricity is poor, the oil seal screw too tight friction is too large, will cause crawling.
What is the safety factor of 25MPa cylinder wall thickness?
Safety factor n can take 3 cylinder material allowable stress [s]=sb/n δ/D=0.08 ~ 0.3 cylinder wall thickness δ=PMAX*D/ (2.3[s]-3PMAX) δ/D≤0.08 cylinder wall thickness δ=PMAX*D/2[s] P < 16MPa, Pmax=1.5Pn; P > 16MPa, Pmax=1.25Pn cold-drawn tube or honing tube is better!
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