Multi-functional integrated type hydraulic cylinder

Abstract

The invention discloses a multi-functional integrated type hydraulic cylinder. The multi-functional integrated type hydraulic cylinder comprises a main cylinder barrel, a main cylinder cover, a barrel-shaped main cylinder piston rod, a rapid cylinder guide sleeve, an isolating ring, a three-section card key and a main cylinder guide sleeve and is characterized in that: a first oil port, a second oil port and a third oil port are formed on the main cylinder barrel; a fourth oil port and a sixth oil port are formed on the main cylinder cover; a positioning cylinder guide sleeve is matched with the inner wall of the left end part of the main cylinder barrel; the inner wall of the positioning cylinder guide sleeve is matched with the outer wall of the main cylinder guide sleeve; the left end part of a barrel-shaped rapid cylinder piston rod is matched with the inner wall of the barrel-shaped main cylinder piston rod; the right end of the barrel-shaped rapid cylinder piston rod is connected with a locknut in a matching way; a rapid cylinder head is connected with the inner wall of the left end part of the barrel-shaped main cylinder piston rod in a matching way; a low-pressure oil inlet pipe is fixedly connected in the barrel-shaped rapid cylinder piston rod; and the right end of the low-pressure oil inlet pipe is a fifth oil port. The multi-functional integrated type hydraulic cylinder has the advantages of compact structure, high circulating operation speed, high working pressure, large thrust force of a working condition, high power density and convenient installation.

Description

technical field [0001] The invention belongs to hydraulic actuators, in particular to a multifunctional integrated hydraulic cylinder. Background technique [0002] At present, the structural design of hydraulic cylinders for linear motion at home and abroad includes single-stage and multi-stage plunger types, single-stage, multi-stage piston types, and two-way thrust types. In order to realize the multiple functions of the hydraulic cylinder, such as rapid positioning at low pressure and the same flow rate, fast work at the same low pressure and flow rate, high thrust work at the same high pressure and low speed, and quick return at the same low pressure and flow rate, and according to the pressure, flow rate and control methods, basically adopt The following way: [0003] (1) Combined configuration of multiple single-stage or multi-stage piston cylinders, each cylinder is responsible for different functions, and coordination needs to be considered when returning quickly; ...

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Problems solved by technology

[0003] (1) Combined configuration of multiple single-stage or multi-stage piston cylinders, each cylinder is responsible for different functions, and coordination needs to be considered when returning quickly; its disadvantages are bulky, complex structure, inconvenient pipeline layout, low response frequency, and many Machinery cannot be installed due to space constraints

[0004] (2) Combination of two single-stage or multi-stage piston cylinders, one cylinder is used for fast positioning function; the other cylinder is responsible for fast forward and work forward functions, but the hydraulic system needs to be equipped with low-pressure, large-flow, high-pressure quantitative system The oil source of the hydraulic pump with small and medium flow or automatic variable, and the oil source is set separately for the oil cylinder with the positioning function, because the required flow is quite different from the main oil source

Its disadvantages are: even if an automatic variable oil source is used, the hydraulic pump must be considered from the maximum required flow rate, resulting in large volume, inconvenient installation and layout, relatively complicated hydraulic system, and large power loss

Its disadvantages are: high cost, large volume, inconvenient installation and layout, relatively complicated hydraulic system, and it is necessary to consider replenishing oil for the accumulator in the system

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