A housing structure for increasing the strength of a cable

Abstract

The utility model discloses a kind of shell structures for improving cable strength, it is related to cable field, including cable and several annular fixed components of fixed installation on cable, annular fixed component is fixedly connected with the anti-skid pad of sealing function between cable surface, the cable surface is provided with two housings, for being matched with the annular fixed component of being set at the both ends of cable cable sealing package;The shell is fixedly connected with annular fixed component.Affinity effect lies in: by setting annular fixed component and shell form rigid support, can resist the static pressure of underground soil, avoid local dent, prevent extrusion cable joint insulating layer, shell arc plate surface is provided with several reinforcing bars along length direction, form longitudinal support framework, effectively protect internal cable joint.Meanwhile, shell material normal temperature has no aging cracking risk, can bear slight displacement of cable due to soil settlement, long-term maintain protection integrity.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a housing structure for improving cable strength. Background Technology

[0002] In the laying of cables in the power and communication sectors, direct burial underground has become the mainstream method due to its wide coverage and controllable cost. However, cable connections remain a weak point in protection. Currently, the industry commonly uses a connection protection method of "metal mesh and heat-shrinkable sheath." Although this method is low-cost and easy to operate, it has revealed multiple unavoidable defects in long-term use and cannot meet the protection requirements of complex underground environments.

[0003] Insufficient strength and poor load-bearing capacity. Under long-term soil compression, the metal mesh is prone to localized indentations, directly compressing the internal cable joints and causing insulation damage. If it encounters a slight impact from machinery such as a small excavator, the metal mesh will break instantly, and the heat-shrinking sheath will tear, completely exposing the cable joints to the soil, leading to conductor corrosion and short-circuit failures within a short period of time.

[0004] In addition, the heat-shrinkable sheath is made of thermoplastic material, which has low hardness at room temperature. It is prone to cracking when the cable is slightly displaced, further compromising its protective function.

[0005] During later maintenance, the damaged metal mesh and heat-shrinkable sheath cannot be repaired locally and must be completely removed and replaced. This not only consumes a lot of time, but may also cause secondary damage to the cable body due to the pulling during the removal process. Utility Model Content

[0006] The purpose of this utility model is to provide a housing structure that improves the strength of cables in order to solve the above problems, as detailed below.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] This utility model provides a housing structure for improving cable strength, including a cable and several annular fixing components fixedly installed on the cable. An anti-slip pad with sealing function is fixedly connected between the annular fixing components and the cable surface. Two housings are provided on the cable surface for cooperating with the annular fixing components at both ends of the cable to seal and wrap the cable.

[0009] The housing is fixedly connected to the annular fixing assembly.

[0010] The aforementioned housing structure for improving cable strength is used to reinforce the connection between two cable segments. The ring-shaped fixing component is fixedly installed on the cable, and then the housing is fixedly installed on the ring-shaped fixing component. The two housings can wrap and protect the connection between the two cable segments, thereby ensuring that the connection will not be damaged by soil compression after the cable is buried in the soil.

[0011] Preferably, the annular fixing assembly includes two semi-circular clamps that fasten to the cable surface. The two semi-circular clamps are fixedly connected by at least two bolts. The bolts are evenly distributed on both sides of the semi-circular clamps and are mounted on the flanges of the semi-circular clamps.

[0012] Preferably, the inner wall of the semi-circular clamp is fixedly connected with an anti-slip pad, and the anti-slip pad is in contact with the surface of the cable.

[0013] Preferably, the anti-slip mat has an arc-shaped groove, and several arc-shaped grooves are equidistantly arranged on the anti-slip mat along the length of the cable.

[0014] Preferably, a semi-circular reinforcing plate is fixedly connected to the side of the semi-circular clamp facing away from the cable to improve the strength of the semi-circular clamp.

[0015] Preferably, the semi-circular reinforcing plate has a slot, in which a positioning pin is inserted and fixedly connected to the corresponding housing.

[0016] Preferably, the housing includes an arc-shaped plate, with extension plates fixedly connected to both sides of the arc-shaped plate along its length. The surface of the semi-circular reinforcing plate is clearance-fitted with the inner wall of the arc-shaped plate. The two corresponding extension plates are fixedly connected to the corresponding semi-circular clamps by bolts, with the bolts passing through the wing plates of the semi-circular clamps.

[0017] Preferably, a number of reinforcing ribs are fixedly connected to the surface of the shell along the length of the shell.

[0018] Preferably, sealing plates are fixedly connected to both ends of the arc-shaped plate. The sealing plate includes a fixing plate fixedly connected to the side of the arc-shaped plate. A sealing gasket is fixedly connected to one side of the fixing plate corresponding to the inside of the arc-shaped plate. The sealing gasket is clearance-fitted with the inner wall of the housing and the surface of the semi-circular clamp.

[0019] Preferably, the locating pin is cross-shaped.

[0020] The beneficial effects are:

[0021] 1. By setting up a ring-shaped fixing component and a shell to form a rigid support, it can resist the static pressure of the underground soil, avoid local indentation, and prevent the cable joint insulation layer from being squeezed. Several reinforcing ribs are set along the length of the arc-shaped plate surface of the shell to form a longitudinal support skeleton, effectively protecting the internal cable joints. At the same time, the shell material has no risk of aging and cracking at room temperature, can withstand the slight displacement of the cable caused by soil settlement, and maintains the protective integrity over a long period of time.

[0022] 2. The first layer of sealing is formed by the combination of the fixing plate and the sealing gasket, preventing external media from seeping in through the connection gap between the shell and the fixing component. The second layer of sealing is achieved by the anti-slip pad on the inner wall of the annular fixing component. The anti-slip pad fits tightly against the cable sheath, further preventing the intrusion of moisture and soil solution.

[0023] 3. Both the ring-shaped fixing component and the housing are bolted together. During later maintenance, only the bolts need to be removed to remove the housing, without damaging the protective structure. This shortens maintenance time and avoids pulling damage to the cable itself, significantly reducing operation and maintenance costs and downtime losses. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 3 This is a front view structural diagram of the present invention;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of the shell of this utility model;

[0029] Figure 5 This is an exploded structural diagram of the annular fixing component of this utility model.

[0030] The annotations in the attached figures are explained as follows:

[0031] 1. Ring-shaped fixing assembly; 2. Cable; 3. Housing; 4. Reinforcing rib; 5. Sealing plate; 6. Arc-shaped plate; 7. Extension plate; 8. Fixing plate; 9. Sealing gasket; 10. Bolt 1; 11. Semi-circular clamp; 12. Semi-circular reinforcing plate; 13. Locating pin; 14. Bolt 2; 15. Anti-slip pad; 16. Arc-shaped groove. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] See Figures 1-5 As shown, this utility model provides a housing structure to improve the strength of a cable, including a cable 2 and several annular fixing components 1 fixedly installed on the cable 2. An anti-slip pad 15 with sealing function is fixedly connected between the annular fixing components 1 and the surface of the cable 2. Two housings 3 are provided on the surface of the cable 2 for cooperating with the annular fixing components 1 at both ends of the cable 2 to seal and wrap the cable 2.

[0034] The housing 3 is fixedly connected to the annular fixing component 1. The housing 3 and the annular fixing component 1 are double-fixed by locating pins 13 and bolts to enhance the stability of the connection.

[0035] As an optional implementation, the annular fixing assembly 1 includes two semi-circular clamps 11 that fasten onto the surface of the cable 2. The two semi-circular clamps 11 are fixedly connected by at least two bolts 14, which are evenly distributed on both sides of the semi-circular clamps 11 and mounted on the flanges of the semi-circular clamps 11. The semi-circular clamps 11 are made of Q235 carbon structural steel with a thickness of 5-8mm. The arc length of a single segment is 3-5mm longer than half the circumference of the cable 2 to ensure a tight fit.

[0036] Flange plate parameters: thickness is the same as the semi-circular clamp, width is 20-30mm; the diameter of the bolt hole on the flange plate is 0.5-1mm larger than the diameter of bolt 2.14, which facilitates alignment.

[0037] An anti-slip pad 15 is fixedly connected to the inner wall of the semi-circular clamp 11, and the anti-slip pad 15 is in contact with the surface of the cable 2. The anti-slip pad 15 is fixed with nitrile rubber adhesive. Hydrogenated nitrile rubber with a hardness of 60-70 Shore A and a thickness of 3-5 mm is used. The contact area with the surface of the cable 2 is ≥95%, with no local gaps. The arc-shaped groove 16 has a semi-circular cross-section with a radius of 1-2 mm, and there are 3-5 of them, spaced 10-15 mm apart along the length of the cable. Functionally, it can store silicone-based sealant to enhance sealing and friction.

[0038] An arc-shaped groove 16 is provided on the anti-slip mat 15, and several arc-shaped grooves 16 are equidistantly arranged on the anti-slip mat 15 along the length of the cable 2.

[0039] A semi-circular reinforcing plate 12 is fixedly connected to the side of the semi-circular clamp 11 facing away from the cable 2 to improve the strength of the semi-circular clamp 11.

[0040] A slot is provided on the semi-circular reinforcing plate 12, and a positioning pin 13 is inserted into the slot. The positioning pin 13 is fixedly connected to the corresponding housing 3.

[0041] The shell 3 includes an arc-shaped plate 6, with extension plates 7 fixedly connected to both sides of the arc-shaped plate 6 along its length. The surface of the semi-circular reinforcing plate 12 is clearance-fitted with the inner wall of the arc-shaped plate 6. The two corresponding extension plates 7 are fixedly connected to the corresponding semi-circular clamps 11 by bolts 10, with bolts 10 passing through the wing plates of the semi-circular clamps 11.

[0042] Bolt 10 and Bolt 24 are equipped with nuts / washers and have a pre-tightening force to prevent loosening.

[0043] The extension plate 7 is fixedly connected to the wing plate, which can further improve the stability of the two semi-circular clamps 11. After the two extension plates 7 are installed on the wing plate, they can clamp the wing plate. At the same time, the extension plate 7 increases the contact area between the shell 3 and the soil, which can further accommodate the displacement of the device after burial.

[0044] The extension plate 7 and the arc plate 6 are integrally formed, the clamping wing plate prevents the bolts from loosening, and increases the soil contact area to reduce pressure.

[0045] Several reinforcing ribs 4 are fixedly connected to the surface of the shell 3 along the length of the shell 3.

[0046] Both ends of the arc plate 6 are fixedly connected to sealing plates 5. The sealing plates 5 include fixing plates 8 fixedly connected to the side of the arc plate 6. The fixing plates 8 are fixedly connected to a sealing gasket 9 on one side of the arc plate 6. The sealing gasket 9 is clearance-fitted with the inner wall of the housing 3 and the surface of the semi-circular clamp 11.

[0047] The locating pin 13 is cross-shaped. The cross structure limits axial and circumferential displacement, which is superior to cylindrical pins in preventing misalignment. It ensures that the coaxial deviation between the housing and the clamp is ≤0.5mm, reducing installation and adjustment.

[0048] Using the above structure, the device is used to reinforce the connection between two cable segments. The ring fixing component 1 is fixedly installed on the cable 2, and then the housing 3 is fixedly installed on the ring fixing component 1. The two housings 3 can wrap and protect the connection between the two cable segments 2, thereby ensuring that the connection between the cable 2 segments will not be damaged by soil compression after the cable 2 is buried in the soil.

[0049] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A housing structure for improving cable strength, characterized in that: Includes a cable (2) and several annular fixing components (1) fixedly installed on the cable (2). An anti-slip pad (15) with sealing function is fixedly connected between the annular fixing components (1) and the surface of the cable (2). Two housings (3) are provided on the surface of the cable (2) for cooperating with the annular fixing components (1) at both ends of the cable (2) to seal and wrap the cable (2). The housing (3) is fixedly connected to the annular fixing assembly (1).

2. The housing structure for improving cable strength according to claim 1, characterized in that: The annular fixing assembly (1) includes two semi-circular clamps (11) that are fastened to the surface of the cable (2). The two semi-circular clamps (11) are fixedly connected by at least two bolts (14). The bolts (14) are evenly distributed on both sides of the semi-circular clamps (11) and are installed on the wing plates of the semi-circular clamps (11).

3. The housing structure for improving cable strength according to claim 2, characterized in that: The inner wall of the semi-circular clamp (11) is fixedly connected with an anti-slip pad (15), and the anti-slip pad (15) is in contact with the surface of the cable (2).

4. The housing structure for improving cable strength according to claim 3, characterized in that: The anti-slip mat (15) has an arc-shaped groove (16) with several arc-shaped grooves (16) evenly spaced along the length of the cable (2) on the anti-slip mat (15).

5. The housing structure for improving cable strength according to claim 4, characterized in that: A semi-circular reinforcing plate (12) is fixedly connected to the side of the semi-circular clamp (11) facing away from the cable (2) to improve the strength of the semi-circular clamp (11).

6. The housing structure for improving cable strength according to claim 5, characterized in that: The semi-circular reinforcing plate (12) has a slot, and a positioning pin (13) is inserted into the slot. The positioning pin (13) is fixedly connected to the corresponding housing (3).

7. The housing structure for improving cable strength according to claim 6, characterized in that: The housing (3) includes an arc-shaped plate (6), and extension plates (7) are fixedly connected to both sides of the arc-shaped plate (6) along its length. The surface of the semi-circular reinforcing plate (12) is in clearance fit with the inner wall of the arc-shaped plate (6). The two corresponding extension plates (7) are fixedly connected to the corresponding semi-circular clamps (11) by bolts (10). The bolts (10) pass through the wing plates of the semi-circular clamps (11).

8. The housing structure for improving cable strength according to claim 7, characterized in that: The shell (3) has several reinforcing ribs (4) fixedly connected to its surface along the length of the shell (3).

9. The housing structure for improving cable strength according to claim 8, characterized in that: Both ends of the arc plate (6) are fixedly connected to sealing plates (5). The sealing plate (5) includes a fixing plate (8) fixedly connected to the side of the arc plate (6). The fixing plate (8) is fixedly connected to a sealing gasket (9) on one side of the arc plate (6). The sealing gasket (9) is clearance-fitted with the inner wall of the shell (3) and the surface of the semi-circular clamp (11).

10. The housing structure for improving cable strength according to claim 8, characterized in that: The positioning pin (13) is cross-shaped.

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