Pipe joint, hydraulic rubber pipe assembly and hydraulic system

A pipe joint and hydraulic technology, which is applied in the field of pipe joints, can solve problems such as damage to the inner rubber of hydraulic hoses, broken steel wires, and pipe bursts, and achieve the effect of improving sealing performance

Active Publication Date: 2021-04-16
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 ca...

Method used

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  • Pipe joint, hydraulic rubber pipe assembly and hydraulic system
  • Pipe joint, hydraulic rubber pipe assembly and hydraulic system
  • Pipe joint, hydraulic rubber pipe assembly and hydraulic system

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Embodiment Construction

[0039] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0040] In the prior art, refer to Figure 1 to Figure 3 As shown, the cross-sectional shape of the internal teeth 121 of the casing 12 is approximately trapezoidal, and the inclination angles of the two sides of the trapezoidal cross-section of the internal teeth 121 are relatively large, and the inner surface of the casing 12 is relatively gentle as a whole. The bite force of layer 23 is not enough, and the hydraulic hose assembly is prone to the risk of "joint pull-out". In addition, the circulation groove structure of the core rod 11 is not enough to accommodate the accommodation structure after the rubber material is extruded and diffused. For the hydraulic...

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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...

Claims

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Application Information

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IPC IPC(8): F16L11/08F16L11/12F16L33/035F16L33/02F16L33/025
Inventor 向小辉
Owner ZOOMLION HEAVY IND CO LTD
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