Stretch-resistant insulating threading rubber hose

Abstract

The utility model discloses a tensile insulating threading rubber hose, and belongs to the technical field of wire threading pipes. The flexible pipe comprises a flexible pipe body and connector assemblies which are connected with the two ends of the flexible pipe body respectively and are of the same structure, the flexible pipe body comprises an outer covering layer, a reinforcing layer and a lining layer from outside to inside, each connector assembly comprises a ball head sealing core rod and a sealing nut, and each ball head sealing core rod is inserted into an inner hole of the flexible pipe body after being inserted into the corresponding sealing nut. A plurality of parallel tensile wires are arranged between the lining layer and the reinforcing layer, the front end of the sealing core rod and the inner conical surface of equipment or other transition joints form a first hard seal, and the middle section of the sealing core rod and the sealing nut form a second hard seal. According to the utility model, good tensile strength can be maintained in shaking and stretching states, the sealing performance is further ensured, the phenomenon of untight sealing caused by high and low temperature influence and aging permanent deformation is avoided, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric wire threading tubes, and in particular relates to a tensile-resistant insulating wire threading rubber hose. Background Art

[0002] Existing wire threading tubes are easily broken and leak when shaken and stretched due to their low tensile strength. Existing threading tubes are mostly divided into two types: explosion-proof threading tubes and metal bellows. However, the inner walls of these two types of threading tubes are made of metal and are not insulated. The interfaces are mostly sealed with a flat surface and rubber pads, which are easily affected by high and low temperatures and permanent deformation due to aging, resulting in poor sealing. Utility Model Content

[0003] The present invention aims to solve the above-mentioned problems, remedy the deficiencies of the prior art, and provide a tensile-resistant insulated wire threading rubber hose. The present invention can maintain good tensile strength under shaking and stretching conditions, and further ensures sealing performance, and will not be affected by high and low temperatures and permanent deformation due to aging, resulting in poor sealing, thereby increasing service life.

[0004] In order to achieve the above-mentioned purpose, the present utility model adopts the following technical solutions.

[0005] The utility model provides a tensile-resistant insulated threading rubber hose, comprising a hose body and joint assemblies with the same structure connected to both ends of the hose body respectively. The hose body comprises an outer covering layer, a reinforcement layer and an inner lining layer from the outside to the inside. The joint assembly comprises a ball-head sealing core rod and a sealing nut. The ball-head sealing core rod is inserted into the sealing nut and then into the inner hole of the hose body. A plurality of parallel tensile lines are arranged between the inner lining layer and the reinforcement layer. The front end of the sealing core rod forms a first hard seal with the inner conical surface of the equipment or other transition joints, and the middle section of the sealing core rod forms a second hard seal with the sealing nut.

[0006] Furthermore, a front spherical surface is provided at the front end of the sealing core rod, and the front spherical surface of the sealing core rod forms a first hard seal with the inner conical surface of the equipment or other transition joints.

[0007] Furthermore, a middle spherical surface is provided in the middle section of the sealing core rod, and a 74° inner conical surface is provided at the front end of the sealing nut. The middle spherical surface of the sealing core rod and the inner conical surface of the sealing nut form a second hard seal.

[0008] Furthermore, the connector assembly further includes a buckle sleeve, which is sleeved on one end of the hose body close to the connector assembly and is connected by buckling.

[0009] Furthermore, the parallel tensile wires are all made of Kevlar fiber.

[0010] Furthermore, the number of parallel tensile wires is the same as the number of braiding angles presented by the cross section of the braided structure of the reinforcement layer, and they are arranged in a one-to-one correspondence at the positions of the respective braiding angles.

[0011] The beneficial effects of the utility model.

[0012] By providing parallel tensile strength lines, this new design maintains superior tensile strength even under shaking and stretching conditions, thereby protecting the wires. Furthermore, the inner lining, reinforcement layer, and outer covering all provide excellent insulation performance. The use of two hard seals further ensures sealing performance, preventing the effects of high and low temperatures, permanent deformation due to aging, and the resulting poor sealing, thereby extending service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0014] Figure 1 It is a schematic diagram of the overall half-section structure of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the hose body of the present utility model.

[0016] Figure 3 It is a schematic side sectional structure diagram of the hose body of the present utility model.

[0017] Figure 4 It is a schematic diagram of the half-section structure of the sealing core rod of the utility model.

[0018] Figure 5 It is a structural schematic diagram of two hard seals of the utility model.

[0019] Figure 6 This utility model Figure 5 Schematic diagram of the enlarged structure of the first hard seal at A.

[0020] Figure 7 This utility model Figure 5 Schematic diagram of the enlarged structure of the second hard seal at B.

[0021] Markings in the figure: 1 is the outer covering layer, 2 is the reinforcement layer, 3 is the inner lining layer, 4 is the parallel tensile wire, 5 is the sealing core rod, 6 is the sealing nut, 7 is the buckle sleeve, 8 is the front end spherical surface, 9 is the middle spherical surface, 10 is the inner cone surface, 100 is the hose body, and 200 is the connector assembly. DETAILED DESCRIPTION

[0022] Combined with attachment Figure 1-7 As shown, this embodiment provides a stretch-resistant insulating threading rubber hose, such as Figure 1 The hose body 100 is shown as an example (in the figure, the middle portion of the hose body 100 is disconnected to omit the continuous length portion), and both ends of the hose body 100 are respectively connected to connector assemblies 200 of the same structure.

[0023] like Figure 2 As shown, the hose body 100 comprises, from the outside inward, an outer covering 1, a reinforcement layer 2, and an inner lining 3. The outer covering 1 is made of a wear-resistant and weather-resistant rubber material to protect the hose from environmental damage. The reinforcement layer 2 is woven from high-strength fibers, providing the required tensile strength to prevent breakage during use. The inner lining 3 is made of a soft rubber material to protect the internal wiring from abrasion.

[0024] like Figure 3 As shown, a plurality of parallel tensile wires 4 are provided between the reinforcement layer 2 and the inner lining layer 3 ( Figure 1 and Figure 2 The cross-sectional view in FIG. 4 does not show the parallel tensile lines 4 due to the cross-sectional form. These parallel tensile lines 4 are all made of Kevlar fiber. Kevlar fiber, with its high strength, light weight and chemical corrosion resistance, can provide the hose with additional tensile and tear resistance.

[0025] The number of parallel tensile wires 4 is the same as the number of braiding angles presented by the cross section of the braided structure of the reinforcement layer 2, and they are arranged in a one-to-one correspondence at the positions of the braiding angles, in order to make the parallel tensile wires 4 bear the force evenly. Figure 3 The example shown shows the reinforcement layer 2 being woven using a 24-spindle 2×2 configuration. The resulting cross-section of the reinforcement layer is a hexagon, necessitating the use of six parallel tensile threads. Alternatively, a 20-spindle 2×2 configuration may produce a pentagonal shape, requiring the use of five parallel tensile threads 4. Alternatively, an 18-spindle 2×2 configuration may produce a triangle, requiring the use of three parallel tensile threads 4. Alternatively, a 24-spindle 3×3 configuration may produce a quadrilateral, requiring the use of four parallel tensile threads 4, and so on.

[0026] like Figure 1 As shown, the joint assembly 200200 includes a ball head sealing core rod 5 (structure as shown Figure 4 As shown), the sealing nut 6, the ball head sealing core rod 5 is inserted into the sealing nut 6 and then inserted into the inner hole of the hose body 100.

[0027] like Figure 1 and Figure 5As shown, to ensure a tight connection between the hose body 100 and the connector assembly 200, the connector assembly 200 further includes a compression sleeve 7. The compression sleeve 7 is mounted on the end of the hose body 100 near the connector assembly 200 and is connected to the hose body 100 by compression. This connection method is simple and secure, facilitating installation and maintenance.

[0028] The front end of the ball head sealing core rod 5 is designed with a front end spherical surface 8, which cooperates with the inner conical surface 10 of the transition joint connected to the equipment or other assembly to form the first hard seal. The joint surface of the first hard seal can be seen in FIG. Figure 5 The enlarged view of point A is Figure 6 This design ensures the sealing and stability of the electrical connection.

[0029] The middle section of the ball head sealing core rod 5 is designed with a middle spherical surface 9, while the front end of the sealing nut 6 is designed with a 74° inner conical surface 10. The 74° cone angle design of the inner conical surface 10 can provide sufficient contact area and pressure, thereby ensuring the reliability and durability of the seal. In addition, the 74° cone angle design is also based on a unified standard, which is convenient for manufacturers and users and reduces compatibility between different manufacturers. The middle spherical surface 9 and the inner conical surface 10 cooperate to form a second hard seal. The joint surface of this second hard seal can be seen in the following figure. Figure 5 The enlarged view of point B is Figure 7 This double sealing design further improves the sealing performance of the connection and prevents the intrusion of liquids and dust.

[0030] The above two hard seals further ensure the sealing performance, and will not be affected by high and low temperatures and permanent deformation due to aging to cause loose sealing, thereby increasing the service life.

[0031] During the manufacturing process, the outer cover 1, reinforcement layer 2, and inner liner 3 are first laminated according to the design requirements and bonded tightly together through a vulcanization process. Parallel tensile wires 4 are then embedded between the reinforcement layer 2 and inner liner 3 to enhance the hose's tensile strength. Next, the ball-end sealing core rod 5 and sealing nut 6 are assembled to each end of the hose body 100, and the hose body 100 is secured to the connector assembly 200 using a crimping sleeve 7.

[0032] It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the implementation methods of the present invention. Ordinary technicians in this field should understand that the present invention can still be modified or replaced by equivalents to achieve the same technical effects; as long as the use requirements are met, they are within the scope of protection of the present invention.

Claims

1. A tensile-resistant insulated threading rubber hose, comprising a hose body (100) and a joint assembly (200) of the same structure connected to both ends of the hose body (100), wherein the hose body (100) comprises, from the outside to the inside, an outer covering layer (1), a reinforcement layer (2) and an inner lining layer (3), and the joint assembly (200) comprises a ball-end sealing core rod (5) and a sealing nut (6), wherein the ball-end sealing core rod (5) is inserted into the sealing nut (6) and then inserted into the inner hole of the hose body (100), characterized in that: A plurality of parallel tensile strength wires (4) are provided between the inner lining layer (3) and the reinforcement layer (2); the front end of the sealing core rod (5) forms a first hard seal with the inner conical surface (10) of the equipment or other transition joint; and the middle section of the sealing core rod (5) forms a second hard seal with the sealing nut (6).

2. The tensile-resistant insulated wire-threading rubber hose according to claim 1, characterized in that: The front end of the sealing core rod (5) is provided with a front end spherical surface (8), and the front end spherical surface (8) of the sealing core rod (5) and the inner conical surface (10) of the equipment or other transition joint form the first hard seal.

3. The tensile-resistant insulated wire-threading rubber hose according to claim 1, characterized in that: The middle section of the sealing core rod (5) is provided with a middle spherical surface (9), and the front end of the sealing nut (6) is provided with a 74° inner conical surface (10). The middle spherical surface (9) of the sealing core rod (5) and the inner conical surface (10) of the sealing nut (6) form the second hard seal.

4. The tensile-resistant insulated wire-threading rubber hose according to claim 1, characterized in that: The joint assembly (200) further comprises a buckle sleeve (7), which is sleeved on one end of the hose body (100) close to the joint assembly (200) and is connected by buckling.

5. The tensile-resistant insulated wire-threading rubber hose according to claim 1, characterized in that: The parallel tensile lines (4) are all made of Kevlar fiber material.

6. The tensile-resistant insulated wire-threading rubber hose according to claim 1, characterized in that: The number of the parallel tensile wires (4) is the same as the number of braiding angles presented by the cross-section of the braided structure of the reinforcement layer (2), and they are arranged in a one-to-one correspondence at the positions of the respective braiding angles.

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