Double-acting cushioning cylinder with external load-absorbing sleeve construction

Abstract

The invention discloses a double-acting buffer hydraulic cylinder with an external load-absorbing sleeve structure, which belongs to the buffer technology of hydraulic cylinders. Including hydraulic cylinder and piston rod; the first guide sleeve is installed at the left end of the hydraulic cylinder, and the first piston is installed at the right end of the piston rod; the external internal cylinder is installed in the external cylinder; The through hole; the left end of the piston rod is fitted in the external inner cylinder, the left end of the piston rod is equipped with a second piston, and the second piston is slidingly fitted in the outer inner cylinder. The invention uses the external cylinder to absorb the load, and the internal structure of the oil cylinder is simpler and more economical; it relies on the pressure difference to achieve buffering and shock absorption effects, and has a quick response and can withstand the impact of a greater load; it adopts an independent double-cylinder structure at both ends, which is convenient for distribution Disassembly and assembly, the two cylinders share the same piston rod in series, the structure is simpler and more compact; the bores at both ends can be adjusted as needed without affecting each other.

Description

technical field [0001] The invention relates to the cushioning technology of a hydraulic cylinder, in particular to a double-acting cushioning hydraulic cylinder with an external load-absorbing sleeve structure. Background technique [0002] As the executive element of the hydraulic system, the hydraulic cylinder has the characteristics of simple transmission structure, flexible action, and can transmit force. It is widely used in construction machinery. Many systems in construction machinery require hydraulic cylinders to meet the requirements of stable operation, which requires some hydraulic cylinders under special working conditions to add a buffer system to absorb the shock and vibration generated during the work process. At present, most ways are to utilize the mechanical force of spring or gas pressure to carry out cushioning and shock absorption. [0003] The mechanical force of the spring is used for cushioning and shock absorption, such as a shock-resistant and sh...

AI Technical Summary

Problems solved by technology

[0006] 1. The hydraulic cylinder using spring as the buffer medium is fragile, the load that can be absorbed is limited, it is not stable, and it needs frequent replacement and maintenance;

[0007] 2. Oil and gas buffering requires oil and gas separation, so hollow piston rods must be used to increase floating pistons. This greatly increases the requirements for piston rods, pistons, and seals, making processing difficult and increasing costs

Images