Buried cable compression resistance device

Abstract

The utility model relates to a buried cable compression resistance device, which comprises a protective tube (10), a cable core (11) is sleeved in the protective tube (10), a support frame (21) is sleeved in the protective tube (10), the outer surface of the support frame (21) is in contact with the inner wall of the protective tube (10), a plurality of clamping grooves (22) are uniformly formed in the outer surface of the support frame (21) in the circumferential direction, and the cable core (11) is sleeved in the clamping grooves (22); the supporting frame (21) is arranged in the protection pipe (10), external extrusion and vibration can act on the protection pipe (10) and the supporting frame (21), extrusion damage to a cable core (11) in the cable is avoided, and therefore normal use of the cable is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to an underground cable compression resistance device. Background Art

[0002] Cable is a general term for optical cables and electrical cables. Cables are mainly used for control installation, connecting equipment, transmitting electricity, etc. Since cables are energized, they need to be installed with special caution. The manufacturing process of cables is closely related to the development of special equipment and promotes each other. According to different laying methods, cables usually include overhead and underground types. Underground cables are widely used because of their many advantages such as saving ground space, beautiful appearance and low cost. However, because of this, the protective tubes of cables currently on the market do not have a buffer protection structure inside. When the cables are buried underground, they are easily squeezed and vibrated from the ground, which causes damage to the wire core inside the cable, and ultimately affects the normal use of the cable. Utility Model Content

[0003] The technical problem to be solved by the utility model is that no buffer protection structure is arranged inside the existing cable protection tube. When the cable is buried underground, it is easily squeezed and vibrated from the ground, which causes damage to the wire core inside the cable, and finally affects the normal use of the cable.

[0004] In order to solve the above-mentioned problems, the utility model provides an underground cable pressure-resistant device, including a protective tube, in which a wire core is sleeved, a support frame is sleeved inside the protective tube, the outer surface of the support frame is in contact with the inner wall of the protective tube, and a plurality of slots are evenly arranged on the outer surface of the support frame in a circumferential direction, and the wire core is sleeved in the slots.

[0005] The buried cable compression resistance device provided by the utility model also has the following technical features:

[0006] The inner wall of the protection tube is slidably connected to the support frame.

[0007] The outer surface of the support frame is evenly provided with a plurality of protrusions in the circumferential direction, and the protrusions slide along the guide grooves. The plurality of guide grooves are evenly arranged on the inner wall of the protection tube in the circumferential direction, and the protrusions and the guide grooves are arranged along the length direction of the protection tube.

[0008] The protrusions and the slots are arranged alternately.

[0009] The cross-sectional shapes of the protrusions and guide grooves are arc-shaped or square-shaped to match each other.

[0010] The outer layer material of the protection tube is EPDM, and the inner layer material of the protection tube and the support frame are both polyvinyl chloride.

[0011] The utility model has the following beneficial effects: by arranging a support frame inside the protective tube, external extrusion and vibration will act on the protective tube and the support frame, avoiding extrusion damage to the wire core inside the cable, thereby avoiding affecting the normal use of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an axonometric drawing of the utility model;

[0013] Figure 2 It is a cross-sectional view of the utility model. DETAILED DESCRIPTION

[0014] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0015] like Figure 1 to Figure 2 As shown, the utility model underground cable pressure-resistant device includes a protective tube 10, in which a wire core 11 is sleeved, and a support frame 21 is sleeved inside the protective tube 10. The outer surface of the support frame 21 contacts the inner wall of the protective tube 10, and a plurality of slots 22 are evenly arranged on the outer surface of the support frame 21 in a circumferential direction, and the wire core 11 is sleeved inside the slots 22.

[0016] The utility model arranges the support frame 21 in the protection tube 10, so that external extrusion and vibration will act on the protection tube 10 and the support frame 21, thereby avoiding extrusion damage to the wire core 11 inside the cable, thereby avoiding affecting the normal use of the cable.

[0017] The clamping slot 22 is arranged along the radial direction of the support frame 21 , and the wire core 11 can be clamped into the support frame 21 through the open end of the clamping slot 22 .

[0018] Preferably, the inner wall of the protection tube 10 is slidably connected to the support frame 21 .

[0019] The utility model first respectively inserts multiple wire cores 11 into the corresponding slots 22 on the support frame 21, and then places the support frame 21 and the wire cores 11 inside the protective tube 10 and generates relative sliding in their length direction, so as to install the support frame 21 and the wire cores 11 inside the protective tube 10, avoid shaking of the support frame 21 and the wire cores 11 due to squeezing and vibration, and thus avoid relative changes in the positions of the wire cores 11 inside the protective tube 10.

[0020] Preferably, the outer surface of the support frame 21 is evenly provided with a plurality of protrusions 23 circumferentially, the protrusions 23 slide along the guide grooves 24 , and the plurality of guide grooves 24 are evenly opened circumferentially on the inner wall of the protective tube 10 , and the protrusions 23 and the guide grooves 24 are both arranged along the length direction of the protective tube 10 .

[0021] Among them, those skilled in the art can change the relative positions and corresponding numbers of the protrusions 23 and the guide grooves 24 according to actual applications, so that the support frame 21 can slide along the length direction of the protection tube 10.

[0022] Preferably, the protrusions 23 and the slots 22 are arranged alternately.

[0023] Preferably, the cross-sectional shapes of the protrusion 23 and the guide groove 24 are arc-shaped or square-shaped that fit each other.

[0024] Preferably, the outer layer material of the protection tube 10 is ethylene propylene rubber, and the inner layer material of the protection tube 10 and the support frame 21 are both made of polyvinyl chloride.

[0025] Through the above-mentioned arrangement, the utility model realizes that the outer layer of the protective tube 10 has good anti-aging performance, avoids aging and cracking of the cable, and increases the strength of the cable. In addition, the support frame 21 and the protective tube 10 have both high strength and good elasticity, thereby effectively protecting the wire core 11 from compression.

[0026] The inner layer of the protection tube 10 and the support frame 21 may also be made of other materials, such as polyethylene, fluoroplastics or polypropylene.

[0027] The working principle of the utility model is as follows:

[0028] During installation, first insert multiple wire cores 11 into the corresponding card slots 22 on the support frame 21 respectively, and then place the support frame 21 and the wire core 11 inside the protective tube 10, so that the support frame 21 slides along the guide groove 24 with the protrusion 23, so that the support frame 21 can slide relatively in the length direction of the protective tube 10, so as to install the support frame 21 and the wire core 11 inside the protective tube 10, avoid shaking of the support frame 21 and the wire core 11 due to extrusion and vibration, thereby avoiding relative changes in the position of the wire core 11 inside the protective tube 10; when extrusion and vibration occur outside, they will act on the protective tube 10 and the support frame 21, avoiding extrusion damage to the wire core 11 inside the cable, thereby avoiding affecting the normal use of the cable; the outer layer of the protective tube 10 of the utility model has good anti-aging performance, which can avoid aging and cracking of the cable and increase the strength of the cable. In addition, the support frame 21 and the protective tube 10 have high strength and good elasticity at the same time, thereby effectively protecting the wire core 11 from pressure.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An underground cable compression device, comprising a protective tube (10) with a wire core (11) enclosed therein, characterized in that: A support frame (21) is sleeved inside the protection tube (10), the outer surface of the support frame (21) contacts the inner wall of the protection tube (10), a plurality of slots (22) are evenly arranged on the outer surface of the support frame (21) in a circumferential direction, and the wire core (11) is sleeved inside the slots (22).

2. The buried cable compression resistance device according to claim 1, characterized in that: The inner wall of the protection tube (10) is slidably connected to the support frame (21).

3. The buried cable compression resistance device according to claim 2, characterized in that: The outer surface of the support frame (21) is evenly provided with a plurality of protrusions (23) in the circumferential direction. The protrusions (23) slide along the guide grooves (24). The plurality of guide grooves (24) are evenly provided on the inner wall of the protection tube (10) in the circumferential direction. The protrusions (23) and the guide grooves (24) are both arranged along the length direction of the protection tube (10).

4. The buried cable compression resistance device according to claim 3, characterized in that: The protrusions (23) and the slots (22) are arranged alternately.

5. The buried cable compression resistance device according to claim 3, characterized in that: The cross-sectional shapes of the protrusion (23) and the guide groove (24) are mutually matching arcs or squares.

6. The buried cable compression resistance device according to claim 1, characterized in that: The outer layer material of the protection tube (10) is ethylene propylene rubber, and the inner layer material of the protection tube (10) and the support frame (21) are both made of polyvinyl chloride.

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