CN-224229457-U - Low-pressure oil pipe with good tensile property

CN224229457UCN 224229457 UCN224229457 UCN 224229457UCN-224229457-U

Abstract

The utility model discloses a low-pressure oil pipe with good tensile property, which belongs to the field of low-pressure oil pipes and comprises a low-pressure oil pipe main body, wherein an inner adhesive layer is arranged in the low-pressure oil pipe main body, a braiding layer is arranged outside the inner adhesive layer, an outer adhesive layer is arranged outside the braiding layer, an additional layer is arranged outside the outer adhesive layer, a plurality of groups of annularly distributed first auxiliary cavities and second auxiliary cavities are arranged inside the outer adhesive layer, the weight of an oil pipe is lightened, the stress of the oil pipe when the oil pipe is bent or pressed is effectively dispersed through the unique shape and distribution of the auxiliary cavities, a stretching part and an extrusion part are arranged between the first auxiliary cavity and the second auxiliary cavity, the included angle of the stretching part is one hundred twenty degrees, and the included angle of the extrusion part is thirty degrees.

Inventors

Jiao Yuanji
JIAO CHUNYAN
SONG CHEN
ZHANG JUNBAO
Zang Yunlei
WANG XUEPENG
LI AIPING
ZHANG HONGZAN

Assignees

青岛福瑞驰科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250613

Claims (8)

1. The low-pressure oil pipe with good tensile property comprises a low-pressure oil pipe main body (1) and is characterized in that an inner adhesive layer (101) is arranged in the low-pressure oil pipe main body (1), a braiding layer (102) is arranged outside the inner adhesive layer (101), an outer adhesive layer (103) is arranged outside the braiding layer (102), an additional layer (104) is arranged outside the outer adhesive layer (103), and a plurality of groups of first auxiliary cavities (1031) and second auxiliary cavities (1034) which are annularly distributed are arranged in the outer adhesive layer (103).
2. The low-pressure oil pipe with good tensile property as claimed in claim 1, wherein the top end of the first auxiliary cavity (1031) and the bottom end of the second auxiliary cavity (1034) are provided with stretching parts (1032), and both sides of the bottom of the first auxiliary cavity (1031) and both sides of the bottom of the second auxiliary cavity (1034) are provided with extrusion parts (1033).
3. The low-pressure oil pipe with good tensile property as claimed in claim 2, wherein the included angle of the stretching part (1032) is one hundred twenty degrees, and the included angle of the extruding part (1033) is thirty degrees.
4. A low-pressure oil pipe with good tensile property according to claim 3, wherein the outer adhesive layer (103) is adhered to the outer part of the braiding layer (102), and the outer adhesive layer (103) is made of neoprene.
5. A low-pressure oil pipe with good tensile property as claimed in claim 4, wherein the inner adhesive layer (101) is made of fluororubber.
6. The low-pressure oil pipe with good tensile property as claimed in claim 5, wherein the braiding layer (102) is positioned between the outer adhesive layer (103) and the inner adhesive layer (101), and the braiding layer (102) is made of steel wires.
7. A low-pressure oil pipe with good tensile property as claimed in claim 6, wherein the additional layer (104) is adhered to the outer part of the outer adhesive layer (103), and the additional layer (104) is made of a polyester fiber layer.
8. A low-pressure oil pipe with good tensile property as claimed in claim 3, wherein the first auxiliary cavity (1031) and the second auxiliary cavity (1034) are arranged in staggered circumference, and elastic silica gel is filled in the cavity.

Description

Low-pressure oil pipe with good tensile property Technical Field The utility model belongs to the technical field of low-pressure oil pipes, and particularly relates to a low-pressure oil pipe with good tensile property. Background In the fields of industry, automobiles, agricultural machinery, hydraulic equipment and the like, a low-pressure oil pipe is used as a key component for oil transmission, the performance of the low-pressure oil pipe directly relates to the reliability and the safety of a system, and the existing low-pressure oil pipe generally adopts a multi-layer composite structure which comprises an inner adhesive layer, a reinforcing layer (such as a fiber or metal braiding layer) and an outer adhesive layer so as to meet the basic requirements of oil resistance, compression resistance and flexibility; For example, CN 221442721U provides a vibration-proof low-pressure oil pipe, which comprises an end locating pipe and a hose, wherein an end butt joint pipe is screwed at one end of the inner side of the end locating pipe, and the butt joint operation flow is simple, so that the installation process is more convenient. The anti-vibration low-pressure oil pipe not only can provide stable connection, but also can effectively slow down vibration transmission, and improves the reliability and performance of the whole system; However, with the complicating of the application scene, the outer adhesive layer is easy to generate local stress concentration when the oil pipe is bent or pressed, so that the cracking or abrasion is caused, the tensile property of the low-pressure oil pipe is poor, and the service life of the low-pressure oil pipe is shortened. Disclosure of utility model The utility model aims to provide a low-pressure oil pipe with good tensile property so as to solve the problems in the background technology. In order to achieve the purpose, the low-pressure oil pipe with good tensile property comprises a low-pressure oil pipe main body, wherein an inner adhesive layer is arranged in the low-pressure oil pipe main body, a braiding layer is arranged outside the inner adhesive layer, an outer adhesive layer is arranged outside the braiding layer, an additional layer is arranged outside the outer adhesive layer, and a plurality of groups of first auxiliary cavities and second auxiliary cavities which are annularly distributed are arranged in the outer adhesive layer. As a preferred embodiment, the top end of the first auxiliary cavity and the bottom end of the second auxiliary cavity are provided with stretching parts, and both sides of the bottom of the first auxiliary cavity and both sides of the bottom of the second auxiliary cavity are provided with extrusion parts. As a preferred embodiment, the angle of the stretching part is one hundred twenty degrees, and the angle of the pressing part is thirty degrees. As a preferred embodiment, the outer adhesive layer is adhered to the outer part of the braiding layer, and the outer adhesive layer is made of neoprene. In a preferred embodiment, the inner adhesive layer is made of fluororubber. As a preferable implementation mode, the braiding layer is positioned between the outer adhesive layer and the inner adhesive layer, and the braiding layer is made of steel wires. As a preferred embodiment, the additional layer is adhered to the outer part of the outer adhesive layer, and the material of the additional layer is a polyester fiber layer. As a preferred implementation mode, the first auxiliary cavity and the second auxiliary cavity are arranged in a staggered circumference mode, and elastic silica gel is filled in the cavity. Compared with the prior art, the utility model has the beneficial effects that: The low-pressure oil pipe with good tensile property is characterized in that the inner part of the outer adhesive layer is provided with a plurality of groups of annularly distributed first auxiliary cavities and second auxiliary cavities, the auxiliary cavities not only lighten the weight of the oil pipe, but also effectively disperse the stress of the oil pipe when the oil pipe is bent or pressed through the unique shape and distribution of the auxiliary cavities, a stretching part and an extrusion part are arranged between the first auxiliary cavities and the second auxiliary cavities, the included angle of the stretching part is one hundred twenty degrees, and the included angle of the extrusion part is thirty degrees; The low-pressure oil pipe with good tensile property is characterized in that the first auxiliary cavity and the second auxiliary cavity are internally filled with elastic silica gel, and the material has good elasticity and buffering property, can further absorb and disperse the impact force of the oil pipe when the oil pipe is subjected to external force, and protects the oil pipe from being damaged; This low pressure oil pipe that tensile strength is good, the weaving layer is located between inner glue layer and the ou