hoister hydraulic cylinder Sold to Uganda

This article mainly introduces:

Uganda hydraulic cylinder,hoister hydraulic cylinder manufacturer,hoister hydraulic cylinder

(Uganda hoister hydraulic cylinder,produced by Hengyu Hydraulic Cylinder Factory）

hoister hydraulic cylinder are widely used in Uganda，because of powerful torque，excellent temperature resistance，no transmission clearance.So our company has designed hoister hydraulic cylinder for customers from Uganda.

Introduction to hoister hydraulic cylinder:

There are some honeycomb holes in the inner wall of the hoister hydraulic cylinder, piston or piston rod surface. How is this formed? When we repair the hoister hydraulic cylinder, we can see that there are some honeycomb holes on the inner wall of the hoister hydraulic cylinder, the piston or the piston rod surface, which are caused by cavitation. Therefore, the cavitation of the hoister hydraulic cylinder is targeted to prevent. Is very necessary.

Protection of the hoister hydraulic cylinder surface: During the dismantling process, safety protection should be carried out on the hoister hydraulic cylinder to prevent objects from falling and welding slag from falling to the surface, causing damage to the hoister hydraulic cylinder surface. In the process of propulsion, the damaged pipe segments should be prevented from falling and smashing, and the slurry remaining on the surface of the hoister hydraulic cylinder should be cleaned up in time.

hoister hydraulic cylinder piston rod material selection and technical requirements: (I), because there is no special requirements, so use 45 steel as the piston rod material, the design of the piston rod only withstand pressure stress, so no modulation processing; (ii) The coaxial tolerance of the shaft journal and the outer circle of the mounting piston is not greater than 0.01mm, so as to ensure the coaxial degree of the outer circle of the piston rod and the outer circle of the piston, and avoid the stuck phenomenon of the piston and the hoister hydraulic cylinder, the piston rod and the guide. The vertical tolerance between the end face of the mounting piston and the axis of the piston rod is not more than 0.04mm/100mm to ensure that the piston installation does not produce skew; (iii) The outer circle of the piston rod should pay attention to the roughness; (iv) Because it is operated under low load conditions, surface treatment is omitted.

The method of sleeve hoister hydraulic cylinder to improve the processing quality: there is a big gap in the service life of post-plating polishing and post-plating polishing, especially in mass production. Strictly clean the flying edge and burr of mechanical components, especially the edge of the sealing groove, and the tiny metal burr, strictly clean before assembly. The surface fatigue strength and stress corrosion resistance of the hoister hydraulic cylinder can be significantly improved by rolling in the finishing of the inner holes of the hoister hydraulic cylinder. The roughness of the surface of the friction pair is generally controlled between Ra0.4 and 0.8.

Answers to some questions about hoister hydraulic cylinder:

Why is the hydraulic cylinder of the larger excavator arm upside down?
The weight of the excavating arm of a large excavator will be very heavy, and an oil cylinder has two cavities, one is a rod cavity, and the other is a rodless cavity. The lifting force of the excavator is the product of the ortho-projection area of the piston rod cavity by the oil pressure, so the strength of the rodless cavity is much greater than that of the rod cavity. And the parallel bars with the piston rod facing down are also conducive to assembly and future maintenance. So a large excavator has to keep the cylinder facing down.

The diameter of the cylinder is 180mm and the pressure is 14mpa. How many tons can the cylinder hold?
Calculate the area of the cylinder, 3.14*9*9=254.34 square centimeters, take the approximate number of engineering, 1 mpa pressure is about 10 kg per square centimeter, 14 mpa pressure is 140 kg per square centimeter, that is 254.34*140=35607.6 kilograms, it can be known that the cylinder can be about 35 tons in theory.