lift car cylinder(lift car cylinder,produced by Hengyu Hydraulic Co., Ltd）lift car cylinder are widely used ，because of no need for deceleration device，long service lif
(lift car cylinder,produced by Hengyu Hydraulic Co., Ltd）
lift car cylinder are widely used ，because of no need for deceleration device，long service life，smooth movement.So our company has designed lift car cylinder for our customers.
The internal leakage of the lift car cylinder is an important indicator to measure the quality of the lift car cylinder: the internal leakage of the lift car cylinder will reduce the volumetric efficiency, increase the temperature rise of the oil, affect the positioning accuracy of the lift car cylinder, so that the lift car cylinder can not accurately and stably stop in a certain position of the lift car cylinder, so it is one of the main indicators of the lift car cylinder.
If the seal of the lift car cylinder is abnormal wear, you can check whether the speed control valve is improperly adjusted, resulting in too high back pressure and improper installation of the seal or hydraulic oil contamination. The second is whether there is a foreign body entering the assembly and the quality of the sealing material is not good. The result is that the action is slow and weak, and in serious cases, it will cause damage to the piston and lift car cylinder, and the phenomenon of "pulling the lift car cylinder" appears. The treatment method is to adjust the speed control valve, and the necessary operation and improvement should be done according to the installation instructions.
The piston rod of the lift car cylinder has two kinds of solid rod and hollow rod, and one end of the hollow piston rod needs to be set aside for welding and heat treatment. The solid piston rod material is 35, 45 steel, and the hollow piston rod material is 35, 45 seamless steel pipe. After rough machining, the piston rod is conditioned to 229~285HB in India, and if necessary, the hardness is 45~55HRC after high-frequency quenching.
When installing the piston rod, it is necessary to ensure that the direction of the connecting head at the top of the piston rod should be consistent with the direction of the lift car cylinder head adn the earring (or the middle hinge shaft), and ensure the straightness of the whole piston rod during the advance and return process to prevent the phenomenon of rigid interference and causing unnecessary damage.
What are the main technical parameters of the hydraulic cylinder?
Parameters are as follows: 1, cylinder diameter, inner diameter size; 2, import and export diameter and thread parameters; 3, piston rod diameter; 4, cylinder pressure, cylinder working pressure, calculation is often used test pressure, less than 16MPa multiplied by 1.5, higher than 16MPa multiplied by 1.25. 5, cylinder stroke; 6. Is there a buffer? According to the working conditions, the piston rod extension contraction is generally buffered if the impact is large. 7, the installation of the cylinder.
How does the variable amplitude cylinder work?
The variable amplitude cylinder is generally an engineering hydraulic cylinder connected by the front and back earrings, and the telescopic expansion of the hydraulic cylinder changes the Angle of the arm of the lifting machinery to achieve the role of the variable amplitude, according to the role it plays is called the variable amplitude cylinder, and there is no variable amplitude hydraulic cylinder in the classification of hydraulic cylinders.
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