Development of hydraulic characteristics and principle

Date： 1970-01-01

Production of hydraulic cylinders know how it formed? Currently in the country according to "2013 - 2017 China cut hydraulic industry sales forecast demand and Transformation Analysis Statement -" Statistics, in 2010 the domestic production of complete hydraulic industry 35.12 billion yuan, an increase of 33.3% over the same period. Hydraulics industry through nearly 50 years of development, has a suitable production strength and technological level, can basically meet the needs of economic development, where sets with matching rate has reached more than 60%, especially in the past 10 years, the rapid growth of low-level occupations , actively promote the development of the hydraulic industry. One of the hydraulic cylinder as the most experienced commodity goods, has now formed a relatively sophisticated supply chain, with a larger market space. According to the current survey of the Internet shows that the domestic sales of hydraulic cylinder production increased from 3.1 billion in 2015 to 2010 of 11 billion, an increase of 28.9%, but and hydraulic industries, the country's total industrial output cylinder ratio remains relatively low, far below the level of foreign countries. With respect to China's market demand is relatively large, and relatively low cost advantage, estimated future will become the focus of international trade and the hydraulic cylinders of the industry.

It consists of two buffer cylinders cylinder head fixed to the upper portion of the cylinder block, a piston mounted in the cylinder, and is characterized in that: in the lower portion of the cylinder at the discharge port of the water safely glide valve spool the end containing the valve body is pressed against the discharge port of the seal ring spring, provided on the spool small radial discharge port, valve equipped with a check valve to make plays, you can drain the small port the ball seal, advantageously disposed on the side of the thrust ball, a steel ball was sealed, a small spool compression spring small oil discharge port, a discharge port extending end portion of the spool sliding ram assembly.

Hydraulic mechanical engineering industry, more and more widespread use of its technical requirements are also increasing, mainly using a pressure-finishing to metal cold plastic characteristics at room temperature, using the rolling tool is applied to the product looks a certain pressure, so that the surface of the metal to plastic products activities to fill the remaining low-lying valley initialized in the workpiece roughness value products declined. Due to hydraulic surface of the metal to plastic deformation, so that the surface layer arrangements cold hardening and grain thinning, precision formed fibrous residual stress layer to improve the strength and hardness of the work product of corrosion and wear resistance.

Hydraulic cylinder works very much the same, there are five basic components: an exhaust device, buffer device, sealing device, the piston and cylinder head and cylinder. Finishing top after 10 years of industry study found that each cylinder works almost similar, with a manual jack to illustrate: Jack is a simple cylinder, manually pressurized dry hydraulic oil into the cylinder through a single valve, so that hydraulic oil into the cylinder due to the individual valves can not fall back. Forcing the lever up, then keep the hydraulic oil into the hydraulic cylinder continuously, thus increasing leverage, to complete its work, to drop open when the hydraulic valve, hydraulic oil back to the mailbox, this is the most simple works, the other is to do some improvements on this basis.

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