Protective tube for cable

Abstract

The utility model discloses a protection tube for a cable, which belongs to the field of cable protection tubes and comprises a cable core and an internal protection pipeline, the cable core is mounted in a pipeline of the internal protection pipeline, a soft protection shell is sleeved outside the internal protection pipeline, and a hard protection shell is sleeved outside the soft protection shell. The soft protective shell comprises a soft pipeline shell and arc-shaped buffer strips, the soft pipeline shell covers the inner protective pipeline, and the arc-shaped buffer strips are annularly distributed in the soft pipeline shell. The hard protection shell and the soft protection shell are sleeved outside the cable core, the soft protection shell is placed in the hard protection shell, the arc-shaped buffer strip and the reset buffer strip of the soft protection shell have certain buffer protection performance, and buffer protection filler can be injected into the filler cavity, so that the buffer protection performance of the protection tube is further improved, and the service life of the protection tube is prolonged. And the hard protection shell is provided with a convex part and a cavity structure, so that the protection performance of the protection tube can be improved, and the weight of the equipment can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of cable protection tubes, in particular to a protection tube for cables. Background Art

[0002] Power cable communication protection tube refers to a rigid polyvinyl chloride pipe of various specifications made of PVC resin as the main raw material and various stabilizers added;

[0003] After searching, the Chinese patent announcement number is CN213585023U, an MPP cable protection tube, including a protection tube body, a first connecting ring and a second connecting ring are respectively provided at both ends of the protection tube body, a sealing block and a plurality of positioning pins are provided on the first connecting ring, and a sealing groove and a plurality of positioning holes are correspondingly provided on the second connecting ring, a plurality of mounting seats are symmetrically provided on the first connecting ring, a screw rod is rotatably installed on the mounting seat, a nut is threadedly connected to the screw rod, a connecting rod is hinged on the nut, a connecting block is fixedly connected to the end of the connecting rod, a clamping block is clamped to the connecting block, and the clamping block is fixedly installed on the second connecting ring; the structure of the utility model The design is reasonable. The positioning between the first connecting ring and the second connecting ring is achieved through the cooperation between the positioning pin and the positioning hole, which is convenient for installing the protection tube body. The sealing function between the first connecting ring and the second connecting ring is achieved by inserting the sealing block on the first connecting ring into the sealing groove on the second connecting ring. The screw rod can be rotated to make the nut drive the connecting rod to move, so that the connecting block is clamped in the clamping groove to achieve the connection between the first connecting ring and the second connecting ring. The operation is convenient and convenient for installing or removing the protection tube body. A reinforcing rod is set to increase the structural stability of the protection tube body and avoid deformation of the protection tube body. The reinforcing rod is set as a telescopic rod structure so that the reinforcing rod is suitable for protection tube bodies of different lengths.

[0004] In the actual installation of the cable protection tube, the weight of the entire cable protection tube increases due to the need to install round rods on the outside. Installing multiple round rods on the outside of the protection tube can indeed improve the protection performance, but it brings inconvenience to the installation. Therefore, the protection performance of the protection tube needs to be considered and its weight needs to be reduced during improvement. Utility Model Content

[0005] The main purpose of the utility model is to provide a protective tube for cables, which can effectively solve the problems raised in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A protective tube for a cable, comprising a cable core and an internal protective tube, wherein the cable core is installed in a tube of the internal protective tube, the external cover of the internal protective tube is provided with a soft protective shell, and the external cover of the soft protective shell is provided with a hard protective shell;

[0008] The soft protective shell includes a soft pipe shell and an arc-shaped buffer strip. The outer cover of the internal protective pipe is provided with the soft pipe shell. A plurality of the arc-shaped buffer strips are annularly distributed inside the soft pipe shell. A clamping cavity is formed between the arc-shaped buffer strip and the soft pipe shell. Two reset buffer strips are installed in each clamping cavity. A filling cavity is formed between the arc-shaped buffer strip and the internal protective pipe. The filling cavity is filled with a buffer protection filling material.

[0009] The hard protective shell includes a hard pipe shell and a raised portion. The hard pipe shell is covered on the outside of the soft pipe shell. Each of the raised portions is distributed in an array on the outside of the hard pipe shell, and a cavity is formed at each raised portion.

[0010] In a further preferred embodiment of the present invention, the soft pipe housing, the arc-shaped buffer strip and the reset buffer strip are designed as one piece, and the arc-shaped buffer strip is designed in a "C" shape;

[0011] In a further preferred embodiment of the present invention, the two reset buffer strips are symmetrically arranged, and both of the two reset buffer strips are designed in a "C" shape;

[0012] In a further preferred embodiment of the present invention, the hard pipe shell and the raised portion are arranged in a hexagonal shape, and the raised portion is arranged directly opposite to the packing cavity, and the cavity wall of the cavity is designed in an arc shape;

[0013] In a further preferred embodiment of the present invention, the soft pipe shell and the hard pipe shell are bonded and connected, and the arc-shaped buffer strip is in contact with the internal protective pipe line;

[0014] In a further preferred embodiment of the present invention, the buffer protection filler is a spherical rubber filler.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] In the utility model, a hard protective shell and a soft protective shell are sleeved on the outside of the cable core, and the soft protective shell is placed inside the hard protective shell. The arc-shaped buffer strip and the reset buffer strip of the soft protective shell have certain buffer protection performance. Buffer protection filler can also be injected into the filler cavity to further improve the buffer protection performance of the protective tube. The raised portion and the cavity structure provided in the hard protective shell can also improve the protection performance of the protective tube and reduce the weight of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a diagram showing the soft protective shell and internal protective pipe of the utility model;

[0019] Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle;

[0020] Figure 4 It is a cross-sectional view of the hard protective shell, the soft protective shell and the internal protective pipe of the utility model.

[0021] In the figure: 1. hard protective shell; 11. hard pipe shell; 12. raised part; 13. cavity; 2. soft protective shell; 21. soft pipe shell; 22. arc-shaped buffer strip; 23. clamping cavity; 24. reset buffer strip; 25. packing cavity; 3. internal protective pipe; 4. cable core; 5. buffer protection packing. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1 - Figure 4 As shown, a protective tube for a cable comprises a cable core 4 and an internal protective pipe 3, wherein the cable core 4 is installed in the pipe of the internal protective pipe 3, the external sleeve of the internal protective pipe 3 is provided with a soft protective shell 2, and the external sleeve of the soft protective shell 2 is provided with a hard protective shell 1; the internal protective pipe 3 can be a soft pipe or a hard pipe, which is determined according to the actual situation of the cable.

[0024] The soft protective shell 2 includes a soft pipe shell 21 and an arc-shaped buffer strip 22. The outer cover of the internal protective pipe 3 is provided with the soft pipe shell 21. A plurality of arc-shaped buffer strips 22 are annularly distributed inside the soft pipe shell 21. A clamping cavity 23 is formed between the arc-shaped buffer strip 22 and the soft pipe shell 21. Two reset buffer strips 24 are installed in each clamping cavity 23. The soft pipe shell 21, the arc-shaped buffer strip 22 and the reset buffer strip 24 are designed as a whole. The arc-shaped buffer strip 22 is designed in a "C" shape; the two reset buffer strips 24 are symmetrically arranged, and the two reset buffer strips 24 are designed in a "C" shape. Since the two reset buffer strips 24 are placed in the clamping cavity 23, the arc-shaped buffer strip 22 squeezes the two reset buffer strips 24 when it is pressurized, and the reset buffer strip 24 is deformed under pressure to achieve buffer protection of the internal protective pipe 3; the arc-shaped buffer strip 22 A stuffing cavity 25 is formed between the inner protection pipe 3, and a buffering protective stuffing 5 is filled in the stuffing cavity 25; the soft pipe shell 21 and the hard pipe shell 11 are bonded and connected, and the arc-shaped buffer strip 22 is in line contact with the inner protection pipe 3. The innermost end point of the arc-shaped buffer strip 22 is connected to the inner protection pipe 3. The line is a tangent line, that is, a line contact. The two can be fixed by hot melting, or directly by one-piece injection molding. The fixed connection method can effectively prevent the buffering protective stuffing 5 from leaking; the buffering protective stuffing 5 is a spherical rubber stuffing. When the arc-shaped buffer strip 22 is deformed, the buffering protective stuffing 5 flows to fill it, so as to prevent the gap between the internal protection pipe 3 and the soft protection shell 2 from being too large. The filled gap can improve the buffering protection performance of the gap. When the hard protection shell 1 is broken, the soft protection shell 2 can also be used for protection;

[0025] The hard protective shell 1 includes a hard pipe shell 11 and a raised portion 12. The outside of the soft pipe shell 21 is covered with the hard pipe shell 11. Each raised portion 12 is distributed in an array on the outside of the hard pipe shell 11, and a cavity 13 is opened at each raised portion 12; the hard pipe shell 11 and the raised portion 12 are arranged in a hexagonal shape, the raised portion 12 is arranged opposite to the filling cavity 25, and the cavity wall of the cavity 13 is designed in an arc shape; since the cross-section of the hard protective shell 1 is designed in a hexagonal column, it is convenient to stack and place the cables and not easy to roll. The raised portion 12 of the hard protective shell 1 is thicker and the cavity 13 can be opened. The arc-shaped corners of the cavity 13 can improve the pressure resistance of the opening. The setting of the cavity 13 can reduce the weight of the hard protective shell 1 and prevent the hard protective shell 1 from being too heavy and causing difficulty in carrying.

[0026] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. However, the terms "include", "comprises" or any other variants are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or include elements that are inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device that includes the elements.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A protective tube for a cable, comprising a cable core (4) and an internal protective tube (3), wherein the cable core (4) is installed in the tube of the internal protective tube (3), Features: The outer cover of the internal protection pipe (3) is provided with a soft protection shell (2), and the outer cover of the soft protection shell (2) is provided with a hard protection shell (1); The soft protective shell (2) comprises a soft pipe shell (21) and an arc-shaped buffer strip (22); the soft pipe shell (21) is disposed outside the internal protective pipe (3); a plurality of the arc-shaped buffer strips (22) are distributed in an annular manner inside the soft pipe shell (21); a clamping cavity (23) is formed between the arc-shaped buffer strips (22) and the soft pipe shell (21); two reset buffer strips (24) are installed in each of the clamping cavities (23); a filling cavity (25) is formed between the arc-shaped buffer strips (22) and the internal protective pipe (3); and the filling cavity (25) is filled with a buffer protection filling material (5); The hard protective shell (1) comprises a hard pipe shell (11) and a raised portion (12); the hard pipe shell (11) is covered on the outside of the soft pipe shell (21); each of the raised portions (12) is distributed in an array outside the hard pipe shell (11); and a cavity (13) is provided at each raised portion (12).

2. A protective tube for cables according to claim 1, Features: The soft pipe shell (21), the arc-shaped buffer strip (22) and the reset buffer strip (24) are designed as an integrated whole, and the arc-shaped buffer strip (22) is designed in a "C" shape.

3. A protective tube for cables according to claim 2, Features: The two reset buffer strips (24) are symmetrically arranged, and both of the two reset buffer strips (24) are designed in a "C" shape.

4. A protective tube for cables according to claim 3, Features: The hard pipe shell (11) and the raised portion (12) are arranged in a hexagonal shape, and the raised portion (12) is arranged directly opposite the filler cavity (25), and the cavity wall of the cavity (13) is designed to be arc-shaped.

5. A protective tube for cables according to claim 4, Features: The soft pipe shell (21) and the hard pipe shell (11) are bonded and connected, and the arc-shaped buffer strip (22) is in line contact with the internal protective pipe (3).

6. A protective tube for cables according to claim 5, Features: The buffer protection filler (5) is a spherical rubber filler.

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