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        spring return cylinder Sold to El Salvador

        Release time:2023-12-11 09:05:27 Hits: Current position: Home > News

        This article mainly introduces:

        El Salvador hydraulic cylinder,spring return cylinder manufacturer,spring return cylinder

        El Salvador spring return cylinder

        (El Salvador spring return cylinder,produced by Hengyu Hydraulic Cylinder Factory)

        spring return cylinder are widely used in El Salvador,because of powerful torque,excellent temperature resistance,no transmission clearance.So our company has designed spring return cylinder for customers from El Salvador.

        Introduction to spring return cylinder:

        When the piston speed of the spring return cylinder is high, the steel ball of the check valve flows with the oil flow, so that the valve hole is blocked, and the spring return cylinder moves irregularly. Elimination method: Replace the steel ball with a cone valve or spool with a guide shoulder.

        The piston seal of the spring return cylinder is the main element to prevent leakage in the spring return cylinder. For the lip seal, it should focus on checking whether the lip edge is bruised and worn, and for the combination seal, it should focus on checking the wear of the sealing surface, and then determine whether the seal can be used. In addition, it is necessary to check whether the static seal between the piston and the piston rod is crushed. The piston rod seal should focus on checking the wear of the seals and supporting rings.

        spring return cylinders in series, parallel and series parallel. Series: In the spring return cylinder, the oil inlet of the subsequent reversing valve is the supply of the previous oil return, and there is no separate oil return circuit connected with the oil return in each valve. Series: In the spring return cylinder, the oil inlet of the subsequent reversing valve is the supply of the previous oil return, and there is no separate oil return circuit connected with the oil return in each valve. Parallel: the pressure oil in the spring return cylinder is connected with the inlet oil of each reversing valve, and the return oil is collected by the return oil circuit. Series parallel: For this one, compared with the simple series and parallel, it is slightly more complicated, but it is not impossible to understand. The series refers to the oil in the spring return cylinder, which is in series form, but can not form a series circuit, and the parallel refers to the oil return circuit of each valve, which is in parallel.

        When installing the spring return cylinder, the axial ends of the spring return cylinder cannot be fixed. Due to the effect of liquid pressure and thermal expansion in the spring return cylinder, there is axial expansion. If the two ends of the spring return cylinder are fixed, all parts of the spring return cylinder will be deformed. When disassembling the spring return cylinder, it is strictly forbidden to hammer the spring return cylinder and the piston surface, such as the spring return cylinder hole and the piston surface is damaged, do not allow sandpaper grinding, to use a fine oil stone carefully grinding. The clearance between the guide sleeve and the piston rod should meet the requirements.

        Answers to some questions about spring return cylinder:

        What is the function of the hinged cylinder of the shield machine?
        The articulated cylinder is used for the shield when the radius of curvature is very small during the propulsion process, that is, for turning. For example, a propulsion section with a radius of curvature of R150 can only be turned using an articulated system due to the sensitivity of the shield body (i.e. the length of the shield body divided by its outside diameter). However, in the construction process, the use of articulated systems is not much.

        Two cylinders have a reversing control, if the load of the two cylinders is not the same, how to ensure their synchronization?
        The piston rod of the cylinder is required to extend synchronization: install A shunt collector valve or synchronous motor at port A of the direction control valve, and then connect the two outlets of the shunt collector valve to the rod-free cavity of the two cylinders respectively. It is required that the outlet of the diverter collector valve is connected to the rod cavity of the two cylinders respectively when the piston rod is withdrawn in synchronization. The synchronization performance depends on the quality of the diverter valve and the leakage of the hydraulic system.

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