This article mainly introduces:

Denmark hydraulic cylinder,supporting cylinder manufacturer,supporting cylinder

(Denmark supporting cylinder,produced by Hengyu Hydraulic Co., Ltd）

supporting cylinder are widely used in Denmark，because of high work efficiency，excellent fatigue and impact resistance，no need for deceleration device.So our company has designed supporting cylinder for customers from Denmark.

Introduction to supporting cylinder:

supporting cylinder and hydraulic station selection: Select the type and structure of the supporting cylinder according to the operation requirements of the main engine. According to the external load force borne by the supporting cylinder, such as gravity, friction force of the external mechanism, inertia force and working load, determine the load change law of the supporting 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 supporting cylinder and the selected oil working pressure. the flow rate of the hydraulic pump is determined according to the movement speed of the supporting cylinder, the diameter of the piston and the piston rod.

When the supporting cylinder is in use, once the seal and guide support ring are found to be defective, the seal with the same structural form and appropriate material should be replaced according to the structural form of the supporting cylinder seal to be repaired, so as to minimize the thickness of the oil film between the seal and the sealing surface and reduce the leakage of the seal.

If the seal of the supporting 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 supporting cylinder, and the phenomenon of "pulling the supporting 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.

supporting cylinder seal leakage causes and countermeasures: a. Loose tie rod nut will cause leakage, tighten the tie rod nut according to the torque requirements of tie rod nut, test no leakage can continue to use. b. Pressure exceeding the limit will also cause leakage. Replace the supporting cylinder seal and re-tighten the tie rod nut to reduce the pressure to the nominal pressure range of the supporting cylinder. c. The supporting cylinder seal is extruded, if the O-ring is obviously extruded at the supporting cylinder seal, replace the supporting cylinder seal.

Answers to some questions about supporting cylinder:

Why is there noise in the hydraulic cylinder of the excavator lift arm?
There is no noise of a normal cylinder, check whether the throttle is ringing, or the mechanical part connected with it is ringing, and the mechanical part can be greased. If it can't be ruled out, disconnect the cylinder from the mechanical part and act alone to see what the situation is.

Is there a national standard for the testing of hydraulic cylinders?
Generally speaking, the cylinder test is carried out according to JB/JQ20302 Allowable leakage of cylinder in pre-factory leakage test. GB2879 hydraulic cylinder piston and piston rod dynamic seal groove type, size and tolerance. GB6578 hydraulic cylinder piston rod dust ring groove type, size and tolerance. GB7938 hydraulic cylinder and cylinder nominal pressure series, etc.