Pipe joint, hydraulic rubber pipe assembly and hydraulic system

Abstract

The invention discloses a pipe joint, a hydraulic rubber pipe assembly and a hydraulic system. The pipe joint comprises a core rod and a sleeve, the sleeve is arranged on the outer side of the core rod in a sleeving mode, an inserting cavity is formed between the sleeve and the core rod, a plurality of inner teeth extending towards the inserting cavity are formed on the inner surface of the sleeve, and a plurality of arc-shaped circulating grooves corresponding to the inner teeth respectively are formed in the outer surface of the core rod. The occlusal force of the pipe joint to a hydraulic rubber pipe can be improved, the accommodating space of the circulating grooves to the hydraulic rubber pipe is increased to avoid extrusion bumps, the sealing performance of the hydraulic rubber pipe assembly is improved, and the diffusion distance of a rubber material layer is reduced so as to reduce the fatigue damage probability of rubber materials.

Description

technical field [0001] The invention relates to the technical field of pipe joints, in particular to a pipe joint, a hydraulic hose assembly and a hydraulic system. Background technique [0002] Hydraulic systems are widely used in construction machinery and other industrial equipment fields, and hydraulic hose assemblies are commonly used auxiliary devices in hydraulic systems, used for hydraulic power transmission or high-pressure media such as water, gas, and oil to ensure liquid circulation and transmit liquid energy. [0003] The hydraulic hose assembly is mainly composed of two parts: the pipe joint and the hydraulic hose. Most of the connection between the pipe joint and the hydraulic hose adopts the "withholding" method. That is, the hydraulic hose is first inserted into the gap between the casing of the pipe joint and the core rod, and then pressure is applied through a special "withholding device", so that the metal casing is deformed inward and the diameter becom...

AI Technical Summary

Problems solved by technology

If the structural design of the pipe joint is defective, the range of "reasonable withholding amount" of the hydraulic hose assembly will be very small, or there is no reasonable "withholding amount", which will easily lead to damage to the inner rubber of the hydraulic hose after the "withholding" of the pipe joint, hydraulic hose The steel wire in the reinforced layer is broken, the occlusal force of the pipe joint occlusal reinforced layer is not enough, and the core rod and the inner rubber of the hydraulic hose cannot be effectively sealed, etc.

These problems can cause the hydraulic hose assembly to easily leak oil, and serious problems can cause the joints of the hydraulic hose assembly to "pull off" or "explode at the buckle" during work. High temperature and high pressure hydraulic oil can easily cause safety problems ACCIDENT

[0005] There is still room for improvement in the reliability of the existing pipe joint design in the market. The present invention will make a more reasonable and reliable design for the pipe joint design, so as to achieve the purpose of improving the crimping reliability of the hydraulic rubber hose assembly

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