JP2016094976A - Hydraulic hose for ship - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hydraulic hose for a ship that has flame resistance, in which respective members are integrated, and that has predetermined flexibility.SOLUTION: A hydraulic hose 10 for a ship includes: a hydraulic rubber hose 12 to both ends of which a joint 14 is connected; a metal movable blade layer 16 covering the hydraulic rubber hose 12 and a connection part 13 of the joint 14 to the hydraulic rubber hose 12; and a stationary band 15 fastening both ends in a longitudinal direction of the blade layer 16 to the connection part 13. Also, at least between the connection part 13 of the joint 14 and the blade layer 16, provided is a refractory layer 18 in which a belt-like refractory material 182 is wound to the connection part 13 in a half wrapped manner, and that is fastened together with the blade layer 16 by the stationary band 15.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a marine hydraulic hose.

Conventionally, a hydraulic hose (marine hydraulic hose) used in a ship is required to have high flame resistance, and only those that meet a predetermined qualification test are permitted to be used on a ship.
For example, in the following Patent Document 1, a flexible hose, a first protection member disposed on the outer periphery of the hose and having heat resistance and flexibility, and a heat resistance disposed on the outer periphery of the first protection member. And the heat-resistant hose comprised by the 2nd protective member which has flexibility is disclosed.

JP 2003-322477 A

In general, as a method for imparting flame resistance to a hose, a method is adopted in which a member having flame resistance is disposed on the surface of the hose as in the above-described prior art.
On the other hand, hoses used on ships need to be compatible with the above qualification test, and the hose and the exterior, and the hose and the joint are integrated, so that they cannot be detached during installation or use. Moreover, in order to make handling on a ship easy, it is necessary to have a certain flexibility.
Therefore, simply disposing the flame resistant member on the surface of the hose may cause a gap between the hose and the flame resistant member, the flame resistant member may be peeled off, or the hose may be difficult to bend. .

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a marine hydraulic hose having flame resistance, integrated members, and predetermined flexibility. .

In order to achieve the above-described object, a marine hydraulic hose according to the invention of claim 1 includes a coupling portion between a hydraulic rubber hose having joints coupled to both ends, and the hydraulic rubber hose and the hydraulic rubber hose of the joint at both ends. A marine hydraulic hose comprising: a metal flexible blade layer to be covered; and a fixing band for fastening both ends of the blade layer in the longitudinal direction to the joint portion, wherein at least the joint portion of the joint and the joint Between the blade layer, there is provided a flame resistant layer in which a belt-shaped flame resistant material is half-wrapped around the joint portion and fastened with the fixed band together with the blade layer.
The marine hydraulic hose according to a second aspect of the present invention is characterized in that the flame resistant layer is provided over the coupling portion of the joint at both ends and the entire length of the hydraulic rubber hose exposed from the coupling portion. And
The marine hydraulic hose according to the invention of claim 3 is configured such that the flame resistant layer is wound with the flame resistant material having an inclination of 45 ° or more and 65 ° or less with respect to the longitudinal direction of the hydraulic rubber hose. It is characterized by that.
The marine hydraulic hose according to a fourth aspect of the invention is characterized in that the flame resistant material has a thickness of 2.5 mm to 4.0 mm.

According to the first aspect of the present invention, since the flame-resistant layer is provided around the joint, the blade layer is compressed in the radial direction by the fixing band, and other parts are also provided at the joints having higher thermal conductivity than the other parts. It is possible to maintain the same flame resistance performance as the location. In addition, since the flame resistant material is half-wrapped with the flame resistant layer, the thickness of the flame resistant material is doubled, the flame resistant performance of the flame resistant layer can be improved, and the entire thickness of the flame resistant layer can be made uniform. In addition, since the hydraulic rubber hose, the joint, and the flame resistant layer are integrated by the blade layer, the safety during use can be improved without being separated during mounting on the pipe or during use. .
According to the invention of claim 2, since the flame resistant layer is provided over the entire area between the joints, the flame resistance of the marine hydraulic hose can be further improved. Moreover, even if the flame resistance performance of the hydraulic rubber hose is low, it is possible to ensure the flame resistance performance that can withstand use on a ship with the entire marine hydraulic hose, and the options for the hydraulic rubber hose can be expanded.
According to the invention of claim 3, since the flame resistant material is wound with an inclination of 45 ° or more and 65 ° or less with respect to the longitudinal direction of the hydraulic rubber hose, the flame resistant layer is used for bending the hydraulic rubber hose. It becomes easy to follow and bend, and the operability of the marine hydraulic hose can be improved.
According to the invention of claim 4, since the thickness of the flame resistant material is 2.5 mm or more and 4.0 mm or less, while maintaining sufficient flame resistance performance, the flame resistant layer becomes easy to bend following the bending of the hydraulic rubber hose, The operability of the marine hydraulic hose can be improved.

It is explanatory drawing which shows the structure of the hydraulic hose 10 for ships concerning Embodiment 1. FIG. It is explanatory drawing which shows the manufacturing process of the hydraulic hose 10 for ships of FIG. It is explanatory drawing which shows the structure of the hydraulic hose 30 for ships concerning Embodiment 2. FIG. It is explanatory drawing which shows the manufacturing process of the hydraulic hose 30 for ships of FIG.

  Exemplary embodiments of a marine hydraulic hose according to the present invention will be explained below in detail with reference to the accompanying drawings.

(Embodiment 1)
FIG. 1 is an explanatory diagram illustrating a configuration of a marine hydraulic hose 10 according to the first embodiment.
The lower half of FIG. 1 shows the exterior of the marine hydraulic hose 10, and the upper half of FIG. 1 shows a state where the blade layer 16 and the flame resistant layer 18 are cut in the longitudinal direction.
The marine hydraulic hose 10 includes a hydraulic rubber hose 12, a joint 14, a blade layer 16, a fixing band 15, and a flame resistant layer 18.

  The hydraulic rubber hose 12 is a rubber hose reinforced with a wire, fiber, or the like, and has a predetermined flame resistance. Inside the hydraulic rubber hose 12, a fluid for driving hydraulic equipment (oil) and marine fuel flow.

The joint 14 is coupled to both ends of the hydraulic rubber hose 12 in the longitudinal direction. The joint 14 is constituted by a nipple 142 and a socket 144. For example, the end portion of the hydraulic rubber hose 12 is fitted into the cylindrical portion of the nipple 142, and the socket 144 placed thereon is crimped by a crimping device, and the joint 14 and the hydraulic rubber hose 12 are coupled.
In FIG. 1, reference numeral 1440 indicates a location where the socket 144 is crimped by the crimping device on the end portion of the hydraulic rubber hose 12 placed on the cylindrical portion of the nipple 142. The portion is a joint 13 of the joint 14 with the hydraulic rubber hose 12.
For the nipple 142 and the socket 144, various conventionally known metal materials having excellent flame resistance, such as stainless steel, can be used.
The joint 14 is connected to a fluid supply port and a discharge port.

  The blade layer 16 is provided so as to cover the coupling portion 13 of the joint 14 and the entire length of the hydraulic rubber hose 12 exposed from the coupling portion 13. The blade layer 16 has stretchability and flexibility. The blade layer 16 is configured by a blade 162 in which metal wires such as stainless steel and soft wire are alternately crossed by a braider (braiding machine).

The flame resistant layer 18 is provided at least on the radially inner side of the blade layer 16 and between the outer peripheral surface of the joint portion 13 of the joint 14. In the present embodiment, the flame resistant layer 18 is provided between the joint portion 13 of the joint 14 and a portion of the hydraulic rubber hose 12 exposed from the joint portion 13 on the radially inner side of the blade layer 16. The flame resistant layer 18 is configured by half-wrapping a strip-shaped flame resistant material 182.
The flame resistant material 182 constituting the flame resistant layer 18 is formed of a material having a flame resistant performance of, for example, 800 ° C. or more. For example, various conventionally known flame resistant materials such as a silicone-based material such as a silicone rubber containing iron oxide, glass wool, and the like. Can be used.
Note that an adhesive layer (not shown) may be provided on the contact surface of the flame resistant material 182 with the hydraulic rubber hose 12, and the flame resistant material 182 may be adhered to the hydraulic rubber hose 12 when the hydraulic rubber hose 12 described later is manufactured. .

  Both ends of the blade layer 16 and the end of the flame resistant layer 18 on the nipple 142 side are fastened and fixed onto the socket 144 by the fixing band 15. The fixing band 15 is made of metal.

A method of manufacturing the marine hydraulic hose 10 according to the first embodiment will be described with reference to FIG.
First, as shown in FIG. 2A, joints 14 are coupled to both ends of the hydraulic rubber hose 12. In addition, you may use the hydraulic rubber hose 12 by which the coupling 14 was previously couple | bonded with the both ends.
Next, as shown in FIG. 2B, the flame resistant material 182 is half-wrapped around the joint 14 to form the flame resistant layer 18.
In the first embodiment, the flame resistant material 182 is half-wrapped only on the coupling portion 13 of the joint 14 and a part of the hydraulic rubber hose 12 exposed from the coupling portion 13.
The reason why the flame resistant material 182 is wound only around the joint 14 is that the fixing band 15 that fixes the end of the blade layer 16 is located around the joint 14. More specifically, since the periphery of the joint 14 is compressed in the radial direction of the hydraulic rubber hose 12 by the fixing band 15, the thermal conductivity is higher than other portions, and the hydraulic rubber hose 12 is easily damaged in a fire or the like. For this reason, the hydraulic rubber hose 12 is protected by disposing a flame resistant layer 18 around the joint 14.

Further, as shown in FIG. 2B, half-wrap winding covers half the width of the band-shaped member located in the lower layer when the band-shaped member (flame resistant material 182) is wound in the longitudinal direction of the cylindrical member (hydraulic rubber hose 12). In this way, the upper layer is wound.
By half-wrapping the flame resistant material 182, the thickness of the flame resistant material 182 is doubled and the flame resistant performance of the flame resistant layer 18 can be improved, and the thickness of the entire flame resistant layer 18 can be made uniform.

The flame resistant material 182 is wound with an inclination of 45 ° or more and 65 ° or less with respect to the longitudinal direction of the hydraulic rubber hose 12. That is, the winding angle θ of the flame resistant material 182 in FIG. 2B is set to 45 ° or more and 65 ° or less.
This is because when the winding angle θ of the flame resistant material 182 is less than 45 °, the extending direction of the flame resistant material 182 is close to the extending direction of the hydraulic rubber hose 12 and the winding angle θ of the flame resistant material 182 exceeds 65 °. This is because the extension direction of the flame resistant material 182 and the extension direction of the hydraulic rubber hose 12 are nearly perpendicular to each other, which makes it difficult for the flame resistant layer 18 to follow the bending of the hydraulic rubber hose 12 in any case.

The thickness of the flame resistant material 182 is preferably 2.5 mm or greater and 4.0 mm or less. This is because if the thickness of the flameproof material 182 is less than 2.5 mm, the flameproof performance may be insufficient, and if it exceeds 4.0 mm, the rigidity of the flameproof layer 18 becomes high and the marine hydraulic hose 10 is difficult to bend. This is because there may be cases.
2C, the entire length portion of the hydraulic rubber hose 12 exposed between the joint portion 13 of the joint 14 at both ends and the joint portion 13 of the joint 14 at both ends is covered with the blade 162, and both ends in the longitudinal direction of the blade layer 16 are covered. Is fastened to the coupling portion 13 with the fixing band 15 to complete the marine hydraulic hose 10.
Since the blade 162 has elasticity, tension is applied in the radial direction of the hydraulic rubber hose 12 by the blade 162, and the fixed state of the flame resistant material 182 is maintained.

The effects of the marine hydraulic hose 10 will be described.
The location of the joint 14 where the blade layer 16 is compressed in the radial direction by the fixing band 15 has a higher thermal conductivity than other locations of the joint 14. However, in the present embodiment, since the flame resistant layer 18 is provided around the joint 14, the flame resistance performance similar to that of other parts is also obtained at the joint 14 where the blade layer 16 is radially compressed by the fixing band 15. Can be maintained.
Further, since the flame resistant material 18 is half-wrapped with the flame resistant material 182, the thickness of the flame resistant material 182 can be doubled to improve the flame resistance performance of the flame resistant layer 18, and the thickness of the entire flame resistant layer 18 can be made uniform. can do.
Further, since the flame resistant layer 18 is wound with the flame resistant material 182 having an inclination of 45 ° or more and 65 ° or less with respect to the longitudinal direction of the hydraulic rubber hose 12, the flame resistant layer 18 follows the bending of the hydraulic rubber hose 12. And the operability of the marine hydraulic hose 10 can be improved.
Further, since the thickness of the flame resistant material 182 is 2.5 mm or greater and 4.0 mm or less, sufficient flame resistance performance is maintained, and the flame resistant layer 18 is easily bent following the bending of the hydraulic rubber hose 12. 10 operability can be improved.
Further, in the marine hydraulic hose 10, since the hydraulic rubber hose 12, the joint 14, and the flame resistant layer 18 are integrated by the blade layer 16, they are not separated at the time of attachment to a pipe or during use. Safety during use can be improved.

(Embodiment 2)
In the second embodiment, parts similar to those in the first embodiment are denoted by the same reference numerals, detailed description thereof is omitted, and parts different from those in the first embodiment are mainly described.
In the second embodiment, as shown in FIG. 3, the flame resistant layer 18 extends over the entire length of the hydraulic rubber hose 12 exposed from the coupling portion 13 and the coupling portion 13 of the joint 14 at both ends inside the blade layer 16 in the radial direction. This is different from the first embodiment.
The marine hydraulic hose 30 is manufactured by first coupling the joints 14 to both ends of the hydraulic rubber hose 12 as shown in FIG. 4A and then connecting the joints 13 and 13 of the joints 14 at both ends as shown in FIG. 4B. The flame resistant material 182 is half-wrapped over the entire length of the exposed hydraulic rubber hose 12.
At this time, the wrapping angle θ of the flame resistant material 182 and the thickness of the flame resistant material 182 are preferably the same as those in the first embodiment.
Then, the marine hydraulic hose 30 is completed by covering the entire length of the flame resistant layer 18 exposed between the joint portions 13 of the joints 14 at both ends as shown in FIG. 4C with the blade 162.
Both ends of the blade layer 16 and the end of the flame resistant layer 18 on the nipple 142 side are fastened and fixed onto the socket 144 by the fixing band 15.

According to the marine hydraulic hose 30 according to the second embodiment, since the flame resistant layer 18 is provided over the entire area between the joints 14, the flame resistance of the marine hydraulic hose 30 can be further improved.
Moreover, even if the flame resistance performance of the hydraulic rubber hose 12 is low, it is possible to ensure the flame resistance performance that can withstand use on a ship with the entire marine hydraulic hose 30, and the options for the hydraulic rubber hose 12 can be expanded. .

  DESCRIPTION OF SYMBOLS 10,30 ... Hydraulic hose for ships, 12 ... Hydraulic rubber hose, 13 ... Joint part, 14 ... Joint, 142 ... Nipple, 144 ... Socket, 15 ... Fixed band, 16 ... Blade layer, 162 ... Blade, 18 ... Flame resistant layer, 182 ... Flame resistant material.

Claims (4)

A hydraulic rubber hose with joints on both ends;
A metal-made flexible blade layer covering a joint portion between the hydraulic rubber hose and the hydraulic rubber hose of the joint at both ends;
A fixing band for fastening both ends of the blade layer in the longitudinal direction to the coupling portion;
A marine hydraulic hose comprising:
Between at least the joint portion and the blade layer of the joint, a flame-resistant layer is provided in which a belt-like flame resistant material is half-wrapped around the joint portion and fastened with the blade layer together with the fixed band.
A marine hydraulic hose characterized by that. The flame resistant layer is provided over the entire length of the hydraulic rubber hose exposed from the coupling portion and the coupling portion of the joint at both ends,
The marine hydraulic hose according to claim 1. The flame resistant layer is formed by winding the flame resistant material with an inclination of 45 ° or more and 65 ° or less with respect to the longitudinal direction of the hydraulic rubber hose.
The marine hydraulic hose according to claim 1 or 2, characterized by the above-mentioned. The flame resistant material has a thickness of 2.5 mm to 4.0 mm,
The marine hydraulic hose according to any one of claims 1 to 3, wherein

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