Super-soft low-temperature-resistant hydraulic rubber pipe

Abstract

The super-soft low-temperature-resistant hydraulic rubber pipe comprises pipe joints and a hydraulic rubber pipe body, the pipe joints are arranged at the two ends of the hydraulic rubber pipe body, the hydraulic rubber pipe body comprises a protective layer, a reinforcing layer and an inner rubber layer which are sequentially arranged from outside to inside, and the reinforcing layer comprises a first metal layer, a lining layer and a second metal layer which are sequentially arranged from outside to inside; the first metal layer comprises a first metal net-shaped layer, the first metal net-shaped layer is arranged to be of a two-layer structure, the two-layer structure is distributed in an overlapped mode, the first metal net-shaped layer is formed by weaving two one-way spiral metal wires, the using toughness and the pit fracture performance of the reinforcing layer on the rubber pipe are improved, and the reinforcing layer is arranged outside the inner rubber layer in a one-layer mode, so that the service life of the rubber pipe is prolonged. The number of layers is reduced, so that the flexibility of the rubber tube is further improved; the protective layer, the reinforcing layer and the inner rubber layer are made of ultralow-temperature materials, so that the ultralow-temperature and super-flexible use performance of the rubber tube is realized; the durable use strength of the inner rubber layer is improved, and the flexible function of the inner rubber layer is improved due to interval two-layer distribution.

Description

Technical Field

[0001] The invention relates to the technical field of super-flexible and low-temperature-resistant hydraulic hoses, and in particular to super-flexible and low-temperature-resistant hydraulic hoses. Background Art

[0002] As an important component of the hydraulic system, hydraulic hoses undertake the key task of transmitting liquid media. However, in different working environments, especially under low temperature conditions, the performance of hydraulic hoses is directly related to the stability and safety of the system.

[0003] The low temperature resistance of hydraulic hoses mainly depends on the materials used to make them. Traditional natural rubber and general synthetic rubbers are prone to hardening and brittleness at low temperatures, resulting in reduced elasticity, reduced sealing performance, and even breakage. Therefore, for hydraulic systems that need to work in low temperature environments, hydraulic hoses made of special synthetic rubber materials should be selected.

[0004] These special synthetic rubber materials, such as butyl rubber, silicone rubber, fluororubber, etc., have good low-temperature flexibility and weather resistance, and can maintain good elasticity and sealing performance at extremely low temperatures. In particular, fluororubber is widely used in high-end hydraulic systems for its excellent oil resistance, acid and alkali resistance, high temperature resistance and low temperature resistance.

[0005] In the prior art: Publication (announcement) number: CN103697254A A hydraulic hose, comprising: an inner rubber layer, an inner rubber protective layer, a reinforcement layer, a middle rubber layer, and an outer rubber layer. The inner rubber layer is a hollow tube body used to withstand the pressure of the transmitted medium. The material is one of silicone rubber, fluororubber, polysulfide rubber, epichlorohydrin rubber, nitrile rubber, polyacrylate rubber, polyurethane rubber, and butyl rubber. The inner diameter of the inner rubber layer ranges from 4.6 to 52 mm, the wall thickness ranges from 0.8 to 1.6 mm, and the thickness unevenness is less than 0.5 mm.

[0006] The existing technical problems are: the hose is composed of too many layers, which can easily cause the flexibility of the hose to be greatly reduced, and the inner layer and the additional layer are arranged to be gradually sleeved on the inner rubber layer, which cannot solve the problem of better improving the flexibility of the hose; and the layers of material in the prior art are all made of rubber. When the hose is used in a stretched state and in a long-term bent state, it is easy to cause the hose to break, debond, and form micro-holes, resulting in poor sealing of the hose.

[0007] For this purpose, it is necessary to provide an ultra-flexible and low-temperature resistant hydraulic hose. Summary of the invention

[0008] In view of the problems existing in the above-mentioned prior art, the present invention provides an ultra-flexible and low-temperature resistant hydraulic hose, the purpose of which is to solve the above-mentioned technical problems.

[0009] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: an ultra-flexible and low-temperature resistant hydraulic hose, including a pipe joint and a hydraulic hose. Pipe joints are arranged at both ends of the hydraulic hose. The hydraulic hose includes a protective layer, a reinforcement layer and an inner rubber layer arranged in sequence from the outside to the inside. The reinforcement layer includes a metal layer one, an inner lining layer and a metal layer two arranged in sequence from the outside to the inside. The metal layer one includes a metal mesh layer one. The metal mesh layer one is arranged to have a two-layer structure, and the two-layer structure is superimposed and distributed. The metal mesh layer one is woven from two unidirectional spiral metal wires, and the spiral weaving directions of the two unidirectional spiral metal wires are woven in opposite directions. The woven metal mesh layer one is wrapped on the outer surface of the inner lining layer. The metal layer two is woven from a layer of metal mesh layer two and distributed on the inner wall of the inner lining layer 7. The weaving warp of the metal mesh layer two is arranged perpendicular to the axial direction of the inner rubber layer. The weaving weft of the metal mesh layer two is arranged at an angle of 45 degrees to the axis of the inner rubber layer. The inner rubber layer is melted with at least two layers of aluminum-titanium alloy wires, and the inner wall of the inner rubber layer is coated with a fluorocarbon coating.

[0010] Preferably, the material of the protective layer is set to be a fiber polyurethane composite material.

[0011] Preferably, the material of the metal mesh layer is set to a new type of aluminum alloy AZ61 in a filamentous state.

[0012] Preferably, the diameter of the braided wire of the metal mesh layer 1 is 0.4 mm-0.7 mm.

[0013] Preferably, the material of the inner rubber layer is set to be a carbon nano-silicone rubber composite material.

[0014] Preferably, the number of flexible segments in the fiber-polyurethane composite material is at least 20% greater than the number of rigid segments.

[0015] Preferably, the inner rubber layer is glue-fused to two layers of aluminum-titanium alloy wires, and the two layers of aluminum-titanium alloy wires are spaced apart from each other.

[0016] Preferably, the surfaces of the first metal layer and the second metal layer are coated with silicon carbide rubber.

[0017] In summary, the present invention provides an ultra-flexible low-temperature resistant hydraulic hose, and the beneficial effects achieved by the present invention are as follows: the metal mesh layer 1 and the metal mesh layer 2 are both woven from two unidirectional spiral metal wires, and the spiral weaving directions of the two unidirectional spiral metal wires are mutually reversed. This method uses the metal layer 1 and the metal layer 2 woven in spiral and opposite directions, which increases the flexibility of the reinforcement layer, and at the same time, improves the toughness and pit fracture performance of the reinforcement layer for the hose, and is arranged on the outside of the inner rubber layer in a one-layer manner, reducing the number of layers, and further improving the flexibility of the hose; In order to further improve the flexibility of the hose, the angle between the weaving weft of the second metal mesh layer and the axis of the inner rubber layer is set to 45 degrees, and the weaving is tilted along the axis of the hose, which improves the durability of the hose and the flexibility of the hose. At the same time, the protective layer, reinforcement layer and inner rubber layer are all made of ultra-low temperature materials, realizing the ultra-low temperature and ultra-flexible performance of the hose.

[0018] In order to achieve the wear resistance and resistance of the inner rubber layer, a fluorocarbon coating is coated on the inner wall of the inner rubber layer, and a two-layer structure of aluminum-titanium alloy wire is distributed inside the inner rubber layer. The two-layer structure of aluminum-titanium alloy wire is distributed in the inner rubber layer in two layers, which improves the durable strength of the inner rubber layer, and the two-layer distribution improves the flexibility of the inner rubber layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the hydraulic hose of the present invention; Figure 2 This is a schematic diagram of the hydraulic hose structure of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the hydraulic hose structure of the present invention. Figure 2 ; Figure 4 It is a schematic diagram of the inner rubber layer structure analysis of the present invention; In the figure: pipe joint 1, hydraulic hose 2, protective layer 3, reinforcement layer 4, inner rubber layer 5, metal layer 1 6, inner lining layer 7, metal layer 2 11, fluorocarbon coating 12, aluminum-titanium alloy wire 13. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] like Figures 1 to 4 As shown: The present invention is an ultra-flexible and low-temperature resistant hydraulic hose, comprising a pipe joint 1 and a hydraulic hose 2. Both ends of the hydraulic hose 2 are provided with pipe joints 1. The hydraulic hose 2 comprises a protective layer 3, a reinforcement layer 4 and an inner rubber layer 5 arranged in sequence from the outside to the inside. The reinforcement layer 4 comprises a metal layer 1 6, an inner lining layer 7 and a metal layer 2 11 arranged in sequence from the outside to the inside. The metal layer 1 6 comprises a metal mesh layer 1, the metal mesh layer 1 is arranged as a two-layer structure, and the two-layer structure is superimposed and distributed. The metal mesh layer 1 is woven by two unidirectional spiral metal wires, and The two unidirectional spiral metal wires are woven in opposite directions. The metal mesh layer 1 formed by weaving is wrapped on the outer surface of the inner lining layer 7. The metal layer 2 11 is woven by a layer of metal mesh layer 2 and distributed on the inner wall of the inner lining layer 7. The weaving warp of the metal mesh layer 2 is perpendicular to the axial direction of the inner rubber layer 5. The angle between the weaving weft of the metal mesh layer 2 and the axis of the inner rubber layer 5 is set to 45 degrees. The inner rubber layer 5 is melted with at least two layers of aluminum-titanium alloy wires 13, and the inner wall of the inner rubber layer 5 is coated with a fluorocarbon coating 12.

[0022] In order to solve the technical problems of poor flexibility, poor durability and excessive use of materials in the prior art, the technical method adopted by the patent of the present invention is: a reinforcing layer 4 is set on the outside of the inner rubber layer 5. The patent adopts a reinforcing layer 4 as a one-layer technical structure. The reinforcing layer 4 is formed by a hot-melt process of a metal layer 1 6, an inner lining layer 7 and a metal layer 2 11. The metal layer 1 6 is a metal mesh layer 1 with a two-layer structure, and the metal layer 2 11 is a metal mesh layer 2 with a one-layer structure. The metal mesh layer 1 and the metal mesh layer 2 are both woven by two unidirectional spiral metal wires, and the spiral weaving directions of the two unidirectional spiral metal wires are mutually reversed. This method uses a metal layer 1 6 and a metal layer 2 11 woven in spirals and opposite directions, which increases the flexibility of the reinforcing layer 4. At the same time, the reinforcing layer 4 is improved in terms of toughness and pit fracture performance for the hose, and is arranged on the outside of the inner rubber layer 5 in a one-layer manner to reduce the number of layers, thereby further improving the flexibility of the hose. In order to further improve the flexibility of the hose, the angle between the weaving weft of the metal mesh layer 2 and the axis of the inner rubber layer 5 is set to 45 degrees, and the weaving is tilted along the axis of the hose, which improves the durability of the hose and the flexibility of the hose. At the same time, the protective layer 3, the reinforcement layer 4 and the inner rubber layer 5 are all made of ultra-low temperature materials, realizing the ultra-low temperature and ultra-flexible performance of the hose.

[0023] In order to realize the wear resistance and usability resistance of the inner rubber layer 5, a fluorocarbon coating 12 is coated on the inner wall of the inner rubber layer 5, and a two-layer structure of aluminum-titanium alloy wires 13 are distributed inside the inner rubber layer 5, and the two-layer structure of aluminum-titanium alloy wires 13 are distributed inside the inner rubber layer 5 in two layers, thereby improving the durable use strength of the inner rubber layer 5, and the two-layer distribution improves the flexibility of the inner rubber layer 5.

[0024] In at least one embodiment, in order to improve the durability, low temperature resistance and flexibility of the protective layer 3, the material of the protective layer 3 is set to be a fiber polyurethane composite material.

[0025] In at least one embodiment, in order to increase the strength of the metal mesh layer 1 and the flexibility of the hose, the metal mesh layer 1 is made of a new type of aluminum alloy AZ61 in a filamentous shape.

[0026] In at least one embodiment, in order to further improve the strength of the metal mesh layer 1 and the flexibility of the hose, the diameter of the braided wire of the metal mesh layer 1 is 0.4 mm-0.7 mm, and preferably the diameter of the braided wire is 0.5 mm.

[0027] In at least one embodiment, in order to increase the wear resistance, corrosion resistance and low temperature resistance of the inner rubber layer 5, the material of the inner rubber layer 5 is set to be a carbon nano-silicone rubber composite material.

[0028] In at least one embodiment, in order to increase the flexibility of the protective layer 3 and maintain the protective function, the number of flexible segments of the fiber polyurethane composite material is at least 20% more than the number of rigid segments.

[0029] In at least one embodiment, the inner rubber layer 5 is glued to melt two layers of aluminum-titanium alloy wires 13 , and the two layers of aluminum-titanium alloy wires 13 are spaced apart from each other.

[0030] In at least one embodiment, in order to improve the protection of the metal layer 1 6 and the metal layer 2 11 on the inner rubber layer 5, the surfaces of the metal layer 1 6 and the metal layer 2 11 are coated with silicon carbide rubber, thereby improving the protection of the inner rubber layer 5 by the reinforcement layer 4 and improving the fracture resistance and durability of the hose.

[0031] The embodiments of the present invention are only used to illustrate the present invention and do not constitute a limitation on the scope of the claims. Other substantially equivalent substitutes that can be thought of by those skilled in the art are all within the protection scope of the present invention.

Claims

1. Ultra-flexible low-temperature resistant hydraulic hose, characterized by: The invention comprises a pipe joint (1) and a hydraulic hose (2). Both ends of the hydraulic hose (2) are provided with pipe joints (1). The hydraulic hose (2) comprises a protective layer (3), a reinforcement layer (4) and an inner rubber layer (5) which are arranged in sequence from the outside to the inside. The reinforcement layer (4) comprises a metal layer 1 (6), an inner lining layer (7) and a metal layer 2 (11) which are arranged in sequence from the outside to the inside. The metal layer 1 (6) comprises a metal mesh layer 1. The metal mesh layer 1 is arranged in a two-layer structure, and the two-layer structure is superimposed. The metal mesh layer 1 is woven from two unidirectional spiral metal wires, and the two The spiral weaving directions of the unidirectional spiral metal wires are mutually reversed, and the metal mesh layer 1 formed by weaving is wrapped on the outer surface of the inner lining layer (7). The metal layer 2 (11) is formed by weaving a layer of metal mesh layer 2 and distributed on the inner wall of the inner lining layer 7. The weaving warp of the metal mesh layer 2 is perpendicular to the axial direction of the inner rubber layer (5), and the weaving weft of the metal mesh layer 2 is set at an angle of 45 degrees to the axis of the inner rubber layer (5). The inner rubber layer (5) is melted with at least two layers of aluminum-titanium alloy wire (13), and the inner wall of the inner rubber layer (5) is coated with a fluorocarbon coating (12).

2. The ultra-flexible low-temperature resistant hydraulic hose according to claim 1 is characterized in that: The material of the protective layer (3) is set to be a fiber polyurethane composite material.

3. The ultra-flexible low-temperature resistant hydraulic hose according to claim 1, characterized in that: The material of the metal mesh layer is a new type of aluminum alloy AZ61 in a filamentous shape.

4. The ultra-flexible low-temperature resistant hydraulic hose according to claim 3 is characterized in that: The diameter of the braided wire of the metal mesh layer 1 is 0.4 mm to 0.7 mm.

5. The ultra-flexible low-temperature resistant hydraulic hose according to claim 1 is characterized in that: The material of the inner rubber layer (5) is set to be a carbon nano-silicon rubber composite material.

6. The ultra-flexible low-temperature resistant hydraulic hose according to claim 2, characterized in that: The number of flexible segments in the fiber-polyurethane composite material is at least 20% more than the number of rigid segments.

7. The ultra-flexible low-temperature resistant hydraulic hose according to claim 1, characterized in that: The inner rubber layer (5) is glued to melt two layers of aluminum-titanium alloy wires (13), and the two layers of aluminum-titanium alloy wires (13) are spaced apart from each other.

8. The ultra-flexible low-temperature resistant hydraulic hose according to claim 1, characterized in that: The surfaces of the metal layer 1 (6) and the metal layer 2 (11) are both coated with silicon carbide rubber.

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