This article mainly introduces:

Switzerland hydraulic cylinder,large bore cylinder manufacturer,large bore cylinder

(Switzerland large bore cylinder,produced by Hebei Hengyu company）

large bore cylinder are widely used in Switzerland，because of clever hydraulic energy conversion，simple structure and reliable operation，excellent temperature resistance.So our company has designed large bore cylinder for customers from Switzerland.

Introduction to large bore cylinder:

When the large bore cylinder thrust is insufficient, check the hydraulic circuit for leaks. Including leakage of valves and hydraulic lines. The inspection method is to check and eliminate the leakage of the hydraulic connection line by manipulating the reversing valve. Also consider the relief valve. If the relief valve enters the dirt and jams the spool, so that the relief valve is normally open, the hydraulic oil will flow directly back to the tank through the relief valve bypass, resulting in no oil in the large bore cylinder. If the load is too large, although the regulating pressure of the relief valve has reached the maximum rating, the large bore cylinder still cannot get the thrust required for continuous action without action. If the regulating pressure is low, the pressure is insufficient to achieve the required vertebra force, which is manifested as insufficient thrust. Check and adjust the relief valve at this time.

How to repair the large bore cylinder body when it is damaged: When the large bore cylinder has trace deformation and shallow tensile marks, the large bore cylinder is repaired by strong honing process. The heavy honing process can repair large bore cylinders up to 2.5 times out of tolerance than the original tolerance. It honed the parts with excessive size or shape error through a powerful honing machine, so that the overall size, shape tolerance and roughness of the large bore cylinder can meet the technical requirements.

How to determine the working pressure of the large bore cylinder: The pressure depends on the load size (i.e., F) and the type of equipment. The limitations of assembly space, economic conditions and component availability of the actuator should also be considered. In the case of a certain load, it is necessary to increase the structural size of the actuator if the working pressure is low, for some equipment, the size may be limited, and it is not economical from the point of view of material consumption; On the contrary, if the pressure selection is too high, the material, sealing and manufacturing accuracy of the pump, large bore cylinder, valve and other components are also required to be high, which will inevitably increase the cost of equipment. In general, for equipment with a fixed size that is not too limited, the pressure can be selected lower, and the walking machinery should be selected higher.

large bore cylinder and hydraulic station selection: Select the type and structure of the large bore cylinder according to the operation requirements of the main engine. According to the external load force borne by the large bore cylinder, such as gravity, friction force of the external mechanism, inertia force and working load, determine the load change law of the large bore cylinder in each stage of the stroke and the power value that must be provided. Determine the diameter of the piston and piston rod according to the working load of the large bore cylinder and the selected oil working pressure. the flow rate of the hydraulic pump is determined according to the movement speed of the large bore cylinder, the diameter of the piston and the piston rod.

Answers to some questions about large bore cylinder:

Why do two hydraulic cylinders lift out of sync?
There may be several situations (do not know the result of the equipment, may not be accurate) 1, whether the slow one is worn 2, whether there is air in the slow cylinder 3, if the two cylinders are supplied by the same oil port, whether the slow joint is blocked (some processing residue will reach a certain oil port under a certain coincidence condition, This situation will not happen if it is not necessarily good before) 4, the oil seal in the slow cylinder leaks, causing the feed oil to leak from the return oil end. Point 4 is most likely because it is invisible and a technical failure. If it is a dual oil feed (separate oil feed), it is also necessary to check the oil supply system and the oil return system (valve type).

How do hydraulic equipment and hydraulic cylinders maintain a certain pressure after pressing to a certain position?
There are several methods. 1. You can use a constant pressure variable pump to adjust the control pressure of the pump to the pressure required by the cylinder, so that when the cylinder is in place, the pump uses the minimum flow rate to maintain the pressure, and the system is more energy saving. 2. If the pressure is maintained for a short time, a hydraulic control check valve can be added to the oil inlet end of the cylinder to close the cylinder and maintain the pressure. If the volume of the cylinder is large, an accumulator can be added between the valve and the cylinder to maintain pressure for 10-30 minutes. 3. You can add a small flow pump, the large pump after unloading, the small pump has been running, specifically for maintaining pressure.