Jacketed abrasion resistant metal hose

Abstract

The utility model relates to metal hose field discloses a sheath type wear -resisting metal hose, including bellows, the both ends of bellows are provided with the joint, the bellows outside is provided with two net cover, the bellows outside is provided with the sheath, the sheath inside is provided with fixed component, the sheath inside is provided with wear -resisting component, the fixed component includes a plurality of connecting rods, the connecting rod outside is fixedly connected with the guide rod, the guide rod outside is fixedly connected with the support rod. In the utility model, when the bellows of metal hose is overhauled, the connecting rod is pulled to drive the guide rod and the support rod to slide and compress the spring, the limiting rod is separated from the limiting groove, the joint can be checked after the sheath is separated and is screwed down, the connecting rod is loosened when resetting, the spring rebound makes the limiting rod be clamped into the groove and fix the sheath, realize the partial dismounting when the metal hose sheath is overhauled, exempt from integral replacement, reduce the maintenance cost, and the installation is adjustable, and the overhaul is comprehensive.

Description

Technical Field

[0001] This utility model relates to the field of metal hoses, and more particularly to a sheathed wear-resistant metal hose. Background Technology

[0002] Metal flexible hoses are made of metals such as stainless steel and are widely used in machinery manufacturing, petrochemicals, and other fields. The sheath is a protective coating for the object; the addition of sheaths to metal flexible hoses is based on multiple needs. Physically, it prevents scratches and impact damage in complex environments, extending its service life; chemically, it isolates corrosive media, preventing corrosion of metal materials; in heat insulation and anti-scalding scenarios, and electrical fire prevention scenarios, heat-insulating and flame-retardant sheaths play an important role; simultaneously, the sheath also has dustproof and waterproof functions, protecting internal cables or fluid media.

[0003] Metal flexible hoses, with their fixed and non-removable sheaths permanently bonded through welding and other processes, tightly fit the hose to resist external forces and isolate corrosion. While suitable for harsh environments with low maintenance requirements, they have significant drawbacks. When internal cable damage occurs, the sheath cannot be removed for repair, necessitating complete replacement, increasing costs and wasting materials. Adjustments during installation are restricted, and comprehensive inspections during equipment maintenance are hindered, making it difficult to identify potential safety hazards. Furthermore, while metal flexible hoses are flexible and corrosion-resistant, they lack wear resistance. The outer braided mesh sheath is prone to wear and breakage under prolonged friction, exposing the inner corrugated pipe and accelerating wear. In high-friction, multi-particle environments such as construction, they wear quickly and have a short lifespan, failing to meet the demands of high wear resistance scenarios. Therefore, a sheathed wear-resistant metal flexible hose is proposed to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a sheath-type wear-resistant metal hose, which aims to improve the problems of non-removable sheath fixation and insufficient wear resistance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sheathed wear-resistant metal hose, comprising a corrugated pipe, wherein both ends of the corrugated pipe are provided with joints, two mesh sleeves are provided on the outside of the corrugated pipe, a sheath is provided on the outside of the corrugated pipe, a fixing component is provided inside the sheath, and a wear-resistant component is provided inside the sheath.

[0006] The fixing assembly includes multiple connecting rods. A guide rod is fixedly connected to the outside of the connecting rod. A support rod is fixedly connected to the outside of the guide rod. A spring is fixedly connected to one side of the support rod. A limit rod is fixedly connected to the other end of the support rod. Two mounting grooves are opened at both ends of the sheath. Two limit grooves are opened at both ends of the corrugated pipe.

[0007] As a further description of the above technical solution:

[0008] The wear-resistant component includes a stainless steel layer disposed on the outside of the corrugated pipe, a copper alloy layer disposed on the outside of the stainless steel layer, a polyurethane layer disposed on the outside of the copper alloy layer, a woven mesh disposed on the outside of the polyurethane layer, and a filler layer disposed between the polyurethane layer and the stainless steel layer, the filler layer being disposed on the outside of the copper alloy layer.

[0009] As a further description of the above technical solution:

[0010] The guide rod is slidably connected inside the mounting groove, and the support rod is slidably connected inside the mounting groove.

[0011] As a further description of the above technical solution:

[0012] The end of the spring away from the limiting groove is fixedly connected inside the mounting groove.

[0013] As a further description of the above technical solution:

[0014] The limiting rod is slidably connected inside the mounting groove, and the limiting rod is slidably connected inside the limiting groove.

[0015] As a further description of the above technical solution:

[0016] The mesh sleeve is positioned on the outside of the joint.

[0017] As a further description of the above technical solution:

[0018] The corrugated pipe and the sheath abut against each other.

[0019] As a further description of the above technical solution:

[0020] The filler layer is made of rubber.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, when the corrugated pipe of the metal flexible hose needs maintenance, the sheath can be disassembled through the following operation: Pull the connecting rod outward, causing the guide rod to slide outward synchronously, which in turn pushes the support rod to move and compresses the spring. During this process, the support rod will drive the limiting rod to slide outward, causing the limiting rod to disengage from the limiting groove, releasing the limiting fixation on the corrugated pipe, thereby separating the sheath from the corrugated pipe. Then, unscrew the threaded connector at one end of the corrugated pipe to inspect the corrugated pipe. After maintenance, reset the sheath, loosen the connecting rod, and the compressed spring will restore its elastic deformation, pushing the support rod to slide in the opposite direction, causing the limiting rod to re-engage into the limiting groove, and fixing the sheath again, completing the entire maintenance and reset process. This achieves partial disassembly of the metal flexible hose sheath during maintenance, eliminating the need for overall replacement, reducing maintenance costs; it allows for flexible adjustment during installation; and it enables comprehensive inspection during maintenance, allowing for timely elimination of potential hazards.

[0023] 2. In this utility model, the wear-resistant components work synergistically through the interaction of each layer: the outermost stainless steel braided mesh resists kinking and prevents bending, wrinkling, and breakage; the inner polyurethane layer absorbs bending stress, reduces friction loss, and prevents media penetration; its inner copper alloy layer, with its hexagonal structure, resists deformation and prevents stress concentration cracking; the innermost stainless steel layer rigidly withstands high pressure and prevents damage to internal components; the filling layer fills the gaps between layers, prevents delamination, isolates moisture and corrosion, and reduces friction noise. The cooperation of each layer ensures the performance and lifespan of the hose, significantly improving the wear resistance of the metal hose under long-term friction or contact with sharp objects, extending its service life, effectively meeting the usage requirements of high wear resistance scenarios, and ensuring its functionality and safety. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a sheathed wear-resistant metal hose proposed in this utility model;

[0025] Figure 2 An exploded three-dimensional schematic diagram of the sheath of a sheath-type wear-resistant metal hose proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of a spring for a sheathed wear-resistant metal hose proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the limiting rod of a sheath-type wear-resistant metal hose proposed in this utility model.

[0028] Legend:

[0029] 1. Sheath; 2. Connector; 3. Mesh sleeve; 4. Corrugated pipe; 5. Mounting groove; 6. Connecting rod; 7. Guide rod; 8. Spring; 9. Support rod; 10. Limiting rod; 11. Limiting groove; 12. Woven mesh; 13. Filling layer; 14. Copper alloy layer; 15. Stainless steel layer; 16. Polyurethane layer. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1-4 This utility model provides an embodiment of a sheathed wear-resistant metal hose, including a corrugated pipe 4, with connectors 2 at both ends of the corrugated pipe 4, two mesh sleeves 3 on the outside of the corrugated pipe 4, and a sheath 1 on the outside of the corrugated pipe 4. A fixing component and a wear-resistant component are installed inside the sheath 1. The corrugated pipe 4 is the core of the metal hose, and it is threadedly connected to other pipes via the connectors 2. The mesh sleeves 3 are woven from stainless steel wire, providing mechanical protection for the internal corrugated pipe 4 and resisting external impacts, wear, and compression. The sheath 1 mainly provides multiple protections and functional optimization. The fixing component is used for quick fixing and disassembly of the sheath 1. The wear-resistant component increases the wear resistance of the metal hose.

[0032] The fixing assembly includes multiple connecting rods 6. A guide rod 7 is fixedly connected to the outside of the connecting rod 6, and a support rod 9 is fixedly connected to the outside of the guide rod 7. A spring 8 is fixedly connected to one side of the support rod 9, and a limit rod 10 is fixedly connected to the other end of the support rod 9. Two mounting grooves 5 are opened at both ends of the sheath 1, and two limit grooves 11 are opened at both ends of the bellows 4. By applying external force to the connecting rod 6, fixing and disassembly can be completed. The guide rod 7 is used to transmit the force of the connecting rod 6 to the support rod 9. The support rod 9 is used to limit the range of motion of the limit rod 10. The spring 8 is used to provide thrust for the movement of the support rod 9, driving it to complete actions such as extension, retraction, and reset. The limit rod 10, in cooperation with the limit groove 11, enables the rapid fixing and disassembly of the sheath 1. The mounting grooves 5 are used to ensure the normal implementation of the fixing assembly.

[0033] The wear-resistant component includes a stainless steel layer 15 disposed on the outside of the bellows 4. A copper alloy layer 14 is disposed on the outside of the stainless steel layer 15, and a polyurethane layer 16 is disposed on the outside of the copper alloy layer 14. A braided mesh 12 is disposed on the outside of the polyurethane layer 16. A filler layer 13 is disposed between the polyurethane layer 16 and the stainless steel layer 15, and is disposed on the outside of the copper alloy layer 14. The stainless steel layer 15, as the main body of the sheath 1, is the core of the wear-resistant component. The rigid structure of the stainless steel sheath 1 can withstand high-pressure external forces, preventing the internal bellows 4 from being flattened or broken. The copper alloy layer 14, with its good ductility and fatigue resistance, can significantly improve the hose's resistance to deformation and effectively reduce cracks caused by bending fatigue. Its hexagonal stable configuration design can convert radial stress into uniformly distributed tension when the hose is bent. To prevent the copper alloy layer 14 from cracking due to stress concentration, the polyurethane layer 16, located below the braided layer, can absorb the internal stress of the hose during bending through deformation, reducing metal fatigue cracks caused by frequent bending of the braided layer. It can also reduce friction loss between the braided layer and the hose body with its smooth and tear-resistant surface. At the same time, its dense structure fills the gaps in the braid, preventing the penetration of liquids, dust and other media. The braided mesh 12, made of stainless steel, gives the hose anti-kink ability, preventing the sheath 1 from wrinkling or breaking during frequent bending. The filling layer 13 fills the gaps between the copper alloy layer 14 and other layers, preventing the sheath 1 from delaminating and isolating the contact between humid air and the copper alloy surface, preventing copper from forming verdigris corrosion in humid environments, and extending the service life of the sheath 1.

[0034] The guide rod 7 is slidably connected inside the mounting groove 5, and the support rod 9 is slidably connected inside the mounting groove 5. The support rod 9 slides inside the mounting groove 5 through the guide rod 7.

[0035] The end of the spring 8 away from the limiting groove 11 is fixedly connected inside the mounting groove 5, and the spring 8 achieves automatic reset by being fixed inside the mounting groove 5.

[0036] The limiting rod 10 is slidably connected inside the mounting groove 5 and the limiting groove 11. The limiting rod 10 achieves quick fixing and disassembly of the sheath 1 by sliding inside the mounting groove 5 and the limiting groove 11.

[0037] The braided sleeve 3 is installed on the outside of the joint 2. The braided sleeve 3 is used for mechanical protection of the bellows 4 between the joint 2 and the sheath 1.

[0038] The corrugated pipe 4 and the sheath 1 abut against each other. The sheath 1 is used to protect the corrugated pipe 4 inside and ensure its normal use.

[0039] The filler layer 13 is made of rubber. The cushioning effect of the rubber can reduce the friction noise between the copper alloy layer 14 and the adjacent metal layer, and extend the service life of the sheath 1.

[0040] Working principle:

[0041] When the bellows 4 of the metal hose needs maintenance, the sheath 1 can be removed by the following operation: Pull the connecting rod 6 outward, which will cause the guide rod 7 to slide outward synchronously, and then push the support rod 9 to move and compress the spring 8. During this process, the support rod 9 will drive the limiting rod 10 to slide outward, so that the limiting rod 10 is disengaged from the limiting groove 11, thereby releasing the limiting fixation of the bellows 4 and separating the sheath 1 from the bellows 4. Then, unscrew the connector 2 connected to one end of the bellows 4 with a thread, and the bellows 4 can be inspected. After maintenance is completed, reset the sheath 1, loosen the connecting rod 6, and the compressed spring 8 will restore its elastic deformation, pushing the support rod 9 to slide in the opposite direction, causing the limiting rod 10 to re-enter the limiting groove 11, and fixing the sheath 1 again, thus completing the entire maintenance and reset process.

[0042] The wear-resistant components rely on the synergistic effect of each layer: the outermost braided mesh 12 is made of stainless steel, giving the hose resistance to kinking and preventing wrinkles or breakage during frequent bending; the inner polyurethane layer 16, located below the braided layer, absorbs internal stress during hose bending through its own deformation, reducing metal fatigue cracks in the braided layer, while its smooth, tear-resistant surface reduces frictional loss with the hose body, and its dense structure fills the braided gaps to prevent media penetration; inside the polyurethane layer 16 is a copper alloy layer 14, which enhances the hose's resistance to deformation with its good ductility and fatigue resistance, and its hexagonal... The shape configuration can transform the radial stress during bending into uniform tension, avoiding stress concentration and cracking, and providing structural support and fatigue protection. The innermost stainless steel layer 15 is the main body of the stainless steel sheath 1, which can withstand high pressure external force with its rigid structure, preventing internal components from being flattened or broken. The filling layer 13 fills the gaps between the stainless steel layer 15 and the copper alloy layer 14, and between the polyurethane layer 16 and the copper alloy layer 14. It not only prevents the sheath from falling off in layers, but also isolates humid air to prevent copper alloy corrosion and reduces interlayer friction noise. The layers work together to ensure the performance and service life of the metal hose.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sheathed wear-resistant metal hose, comprising a corrugated pipe (4), characterized in that: The corrugated pipe (4) is provided with connectors (2) at both ends, and two mesh sleeves (3) are provided on the outside of the corrugated pipe (4). A protective sleeve (1) is provided on the outside of the corrugated pipe (4). A fixing component is provided inside the protective sleeve (1). A wear-resistant component is provided inside the protective sleeve (1). The fixing assembly includes multiple connecting rods (6), a guide rod (7) is fixedly connected to the outside of the connecting rod (6), a support rod (9) is fixedly connected to the outside of the guide rod (7), a spring (8) is fixedly connected to one side of the support rod (9), and a limit rod (10) is fixedly connected to the other end of the support rod (9). Two mounting grooves (5) are opened at both ends of the sheath (1), and two limit grooves (11) are opened at both ends of the corrugated pipe (4).

2. The sheathed wear-resistant metal hose according to claim 1, characterized in that: The wear-resistant component includes a stainless steel layer (15) disposed on the outside of the corrugated pipe (4), a copper alloy layer (14) disposed on the outside of the stainless steel layer (15), a polyurethane layer (16) disposed on the outside of the copper alloy layer (14), a woven mesh (12) disposed on the outside of the polyurethane layer (16), and a filler layer (13) disposed between the polyurethane layer (16) and the stainless steel layer (15), the filler layer (13) being disposed on the outside of the copper alloy layer (14).

3. The sheathed wear-resistant metal hose according to claim 1, characterized in that: The guide rod (7) is slidably connected inside the mounting groove (5), and the support rod (9) is slidably connected inside the mounting groove (5).

4. The sheathed wear-resistant metal hose according to claim 1, characterized in that: The end of the spring (8) away from the limiting groove (11) is fixedly connected inside the mounting groove (5).

5. The sheathed wear-resistant metal hose according to claim 1, characterized in that: The limiting rod (10) is slidably connected inside the mounting groove (5), and the limiting rod (10) is slidably connected inside the limiting groove (11).

6. The sheathed wear-resistant metal hose according to claim 1, characterized in that: The mesh sleeve (3) is located on the outside of the joint (2).

7. The sheathed wear-resistant metal hose according to claim 1, characterized in that: The corrugated pipe (4) and the sheath (1) abut against each other.

8. A sheathed wear-resistant metal hose according to claim 2, characterized in that: The filler layer (13) is made of rubber.

Images