Buried warning cable

Abstract

The utility model belongs to the field of warning cables, and particularly relates to a buried warning cable, which comprises a cable main body, an upper protection structure is fixedly connected above the outer wall at the joint of the cable main body, and a lower protection structure is fixedly connected below the outer wall at the joint of the cable main body. When the upper protection structure and the lower protection structure are in a fixed state, the middle position is in a circular hollow shape, the cable main body comprises a core body and a fastening sleeve, the core body is arranged in the middle position of the cable main body, and the outer wall of the core body is bonded with the fastening sleeve through glue; according to the utility model, the joint of the cable main body can be protected through the cooperation of the upper protection structure and the lower protection structure, so that the joint can be prevented from being bent and even fractured in the construction process in the pavement maintenance construction process, the safety of buried installation of the cable is improved, and the service life of the cable is prolonged. The fluorescent agent in the filling ring can enhance the warning effect of the cable, and the reinforcing protection layer can play a role in bending resistance.

Description

Technical Field

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

[0002] Wires and cables are wire products used to transmit electrical (magnetic) energy, information and realize electromagnetic energy conversion. Wires and cables in a broad sense are also referred to as cables. Cables in a narrow sense refer to insulated cables, which can be defined as one or more insulated cores, and their respective coatings, total protective layers and outer sheaths. Cables may also have additional uninsulated conductors.

[0003] In Chinese patent CN201711275869.7, the invention discloses an underground warning cable, including a cable body and a protective device arranged at the bottom of the cable body, the protective device includes an outer shell, a receiving cavity is arranged in the middle of the outer shell, the bottom surface of the receiving cavity of the outer shell is an arc surface, a rubber bag is installed in the arc surface of the outer shell, the upper end surface of the rubber bag is provided with a first arc concave surface, the top of the outer shell is open, and limited retaining edges are arranged on both sides of the opening end, a floating piece is arranged at the upper end of the rubber bag, and a second arc concave surface is arranged at the upper end of the floating piece, the bottom of the cable body is installed in the second arc concave surface of the floating piece, and the top extends out of the upper end surface of the outer shell. The invention has a simple structure, can effectively serve the purpose of early warning, and has very good safety protection ability and heat dissipation performance, increasing the safety of cable use.

[0004] Although existing underground cables can be used in the soil, they are often compressed, causing the cables to be damaged by excessive pressure or shearing. Although many cables are equipped with anti-shear structures, this safety structure does not play any role at all when facing large external shearing forces. However, during road maintenance and construction, if there is no warning structure, the cables may bend or even break during construction.

[0005] Therefore, a buried warning cable is proposed to address the above problems. Utility Model Content

[0006] The utility model aims to provide an underground warning cable to solve the problem in the above-mentioned background technology that if there is no warning structure during road maintenance construction, the cable may be bent or even broken during the construction process.

[0007] The technical solution adopted by the utility model to solve its technical problems is: an underground warning cable, including a cable body, an upper protective structure fixedly connected above the outer wall of the joint of the cable body, and a lower protective structure fixedly connected below the outer wall of the joint of the cable body, and the middle position of the upper protective structure and the lower protective structure is a circular hollow shape when they are in a fixed state.

[0008] Preferably, the cable body includes a core body and a fastening sleeve, the core body is arranged in the middle position of the cable body, and the fastening sleeve is bonded to the outer wall of the core body by glue, and the fastening sleeve is made of heat-resistant rubber material.

[0009] Preferably, the cable body further comprises a filling pad and a shielding layer, the outer wall of the fastening sleeve is tightly wrapped with the filling pad, and the outer wall of the filling pad is tightly fitted with the shielding layer.

[0010] Preferably, the shielding layer further includes a fireproof layer and a waterproof layer, the outer wall of the shielding layer is tightly fitted with the fireproof layer, and the outer wall of the fireproof layer is tightly fitted with the waterproof layer.

[0011] Preferably, the cable body also includes a filling ring and a reinforced protective layer, the outer wall of the waterproof layer is tightly fitted with the filling ring, and the interior of the filling ring is filled with a fluorescent agent, and the outer wall of the filling ring is tightly fitted with a reinforced protective layer.

[0012] Preferably, the upper protective structure includes an upper fixed plate, a positioning spring, a positioning screw and a positioning nut, the outer walls on both sides of the upper protective structure are fixedly connected to the upper fixed plate, and a first slot is reserved in the middle of the upper fixed plate, the outer side of the first slot is fixedly connected to the positioning spring, and the top of the positioning spring is fixedly connected to the positioning screw, the bottom of the positioning screw is through-connected to the first slot, and the outer wall of the positioning screw is threadedly connected to the positioning nut.

[0013] Preferably, the lower protective structure includes a lower fixing plate, both sides of the lower protective structure are fixedly connected with the lower fixing plates, and a second notch is reserved in the middle of the lower fixing plate, and the second notch is through-connected with the positioning screw.

[0014] The utility model is beneficial in that:

[0015] 1. The utility model adopts the cooperation between the upper protective structure, the upper fixing plate, the positioning spring, the positioning screw, the positioning nut, the lower protective structure and the lower fixing plate. When the upper protective structure and the lower protective structure are in a fixed state, the cable body joint can be protected. In this way, during the road maintenance construction process, the joint can be prevented from bending or even breaking during the construction process, thereby improving the safety of the underground cable installation.

[0016] 2. The utility model adopts the cooperation between the fastening sleeve, the filling pad, the shielding layer, the fireproof layer, the waterproof layer, the filling ring and the reinforced protective layer. The fastening sleeve can limit the position of the core body. The fastening sleeve is made of heat-resistant rubber material and can withstand the high temperature generated by outdoor installation. The filling pad can protect the core body and avoid the displacement of the core body. The shielding layer can prevent the cable from being squeezed by external force. The fireproof layer and the waterproof layer play the role of waterproof, heat-insulating and fire-proof, and enhance the fireproof and waterproof properties of the cable. The interior of the filling ring is filled with a fluorescent agent, which can increase the warning effect of the cable and prevent workers from accidentally cutting the cable. The reinforced protective layer is made of polyvinyl alcohol fiber material, which can play an anti-bending role. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model as a whole viewed from the front;

[0019] Figure 2 It is a schematic diagram of the specific structure of the upper and lower protection structures of the utility model;

[0020] Figure 3 It is a schematic diagram of the specific structure of the cable main body of the utility model;

[0021] Figure 4 It is a specific structural schematic diagram of the filling ring of the utility model.

[0022] In the figure: 1. Cable body; 11. Core body; 12. Fastening sleeve; 13. Filling pad; 14. Shielding layer; 15. Fireproof layer; 16. Waterproof layer; 17. Filling ring; 18. Strengthening protective layer; 2. Upper protective structure; 21. Upper fixing plate; 22. Positioning spring; 23. Positioning screw; 24. Positioning nut; 3. Lower protective structure; 31. Lower fixing plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 4 As shown, an underground warning cable includes a cable body 1, an upper protective structure 2 is fixedly connected to the upper outer wall of the joint of the cable body 1, and a lower protective structure 3 is fixedly connected to the lower outer wall of the joint of the cable body 1, and the middle position of the upper protective structure 2 and the lower protective structure 3 is circular hollow when the upper protective structure 2 and the lower protective structure 3 are in a fixed state. Through such an arrangement, the upper protective structure 2 and the lower protective structure 3 can protect the joint of the cable body 1 when they are in a fixed state, so that during the road maintenance construction, the joint can be prevented from bending or even breaking during the construction process, thereby improving the safety of the underground installation of the cable.

[0025] The cable body 1 includes a core body 11 and a fastening sleeve 12. The core body 11 is arranged in the middle position of the cable body 1, and the fastening sleeve 12 is bonded to the outer wall of the core body 11 by glue, and the fastening sleeve 12 is made of heat-resistant rubber material. Through such an arrangement, the fastening sleeve 12 can limit the position of the core body 11. The fastening sleeve 12 is made of heat-resistant rubber material and can withstand the high temperature generated by outdoor installation.

[0026] The cable body 1 also includes a filling pad 13 and a shielding layer 14. The outer wall of the fastening sleeve 12 is tightly wrapped with the filling pad 13, and the outer wall of the filling pad 13 is tightly fitted with the shielding layer 14. Through such a setting, the filling pad 13 can protect the core body 11 and avoid displacement of the core body 11. The shielding layer 14 can prevent the cable from being squeezed by external force.

[0027] It also includes a fireproof layer 15 and a waterproof layer 16. The outer wall of the shielding layer 14 is tightly fitted with the fireproof layer 15, and the outer wall of the fireproof layer 15 is tightly fitted with the waterproof layer 16. Through such a setting, the fireproof layer 15 and the waterproof layer 16 play the role of waterproofing, heat insulation and fire prevention, thereby enhancing the fire and waterproof properties of the cable.

[0028] The cable body 1 also includes a filling ring 17 and a reinforced protective layer 18. The outer wall of the waterproof layer 16 is tightly fitted with the filling ring 17, and the interior of the filling ring 17 is filled with a fluorescent agent. The outer wall of the filling ring 17 is tightly fitted with the reinforced protective layer 18. Through such a setting, the interior of the filling ring 17 is filled with a fluorescent agent, which can increase the warning effect of the cable and prevent workers from accidentally cutting the cable. The reinforced protective layer 18 is made of polyvinyl alcohol fiber, which can play an anti-bending role.

[0029] The upper protective structure 2 includes an upper fixed plate 21, a positioning spring 22, a positioning screw 23 and a positioning nut 24. The outer walls on both sides of the upper protective structure 2 are fixedly connected with the upper fixed plate 21, and a first notch is reserved in the middle position of the upper fixed plate 21. The outer side of the first notch is fixedly connected with the positioning spring 22, and the top of the positioning spring 22 is fixedly connected with the positioning screw 23. The bottom of the positioning screw 23 is through-connected with the first notch, and the outer wall of the positioning screw 23 is threadedly connected with the positioning nut 24. Through such an arrangement, when the upper protective structure 2 and the lower protective structure 3 are fixed, the positioning screw 23 and the positioning nut 24 fix the upper fixed plate 21 and the lower fixed plate 31, and the positioning screw 23 plays a limiting role through the positioning spring 22 to avoid loss.

[0030] The lower protective structure 3 includes a lower fixing plate 31, both sides of the lower protective structure 3 are fixedly connected with the lower fixing plate 31, and a second notch is reserved in the middle position of the lower fixing plate 31, and the second notch and the positioning screw 23 are through-connected. Through such an arrangement, the upper protective structure 2 and the lower protective structure 3 remain in a fixed state to protect the cable structure and improve the safety of underground burial.

[0031] Working principle: When the upper protective structure 2 and the lower protective structure 3 are in a fixed state, they can protect the joint of the cable body 1. In this way, during the road maintenance construction process, the joint can be prevented from bending or even breaking during the construction process, thereby improving the safety of the cable buried installation. When the upper protective structure 2 and the lower protective structure 3 are fixed, first place the lower protective structure 3 at the bottom of the cable joint, and lift the positioning screws 23 in the middle of the upper fixing plates 21 on both sides upward. When the positioning screws 23 are lifted, the positioning springs 22 begin to stretch, align the upper fixing plate 21 of the upper protective structure 2 with the lower fixing plate 31, loosen the positioning screws 23, and the positioning screws 23 rebound under the rebound action of the positioning springs 22. The bottom end of the positioning screws 23 passes through the first notch and the second notch, press the positioning screws 23 downward, and use the positioning nut 24 to push from the bottom of the positioning screws 23 to the The upper fixing plate 21 and the lower fixing plate 31 are fixed by the positioning screws 23 and the positioning nuts 24. The upper protective structure 2 and the lower protective structure 3 remain in a fixed state to protect the cable structure and improve the safety of underground burial. The fastening sleeve 12 can limit the position of the core body 11. The fastening sleeve 12 is made of heat-resistant rubber material and can withstand the high temperature generated by outdoor installation. The filling pad 13 can protect the core body 11 and prevent the core body 11 from shifting. The shielding layer 14 can prevent the cable from being squeezed by external force. The fireproof layer 15 and the waterproof layer 16 play the role of waterproof, heat-insulating and fire-proofing, thereby enhancing the fireproof and waterproof properties of the cable. The filling ring 17 is filled with a fluorescent agent, which can increase the warning effect of the cable and prevent workers from accidentally cutting the cable. The reinforced protective layer 18 is made of polyvinyl alcohol fiber, which can resist bending.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and 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, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An underground warning cable, comprising a cable body (1), characterized in that: An upper protective structure (2) is fixedly connected to the upper part of the outer wall of the joint of the cable body (1), and a lower protective structure (3) is fixedly connected to the lower part of the outer wall of the joint of the cable body (1); when the upper protective structure (2) and the lower protective structure (3) are in a fixed state, the middle position is in a circular hollow shape.

2. The underground warning cable according to claim 1, characterized in that: The cable body (1) comprises a core body (11) and a tightening sleeve (12); the core body (11) is arranged in the middle of the cable body (1), and the tightening sleeve (12) is bonded to the outer wall of the core body (11) by glue, and the tightening sleeve (12) is made of heat-resistant rubber material.

3. The underground warning cable according to claim 2, characterized in that: The cable body (1) further comprises a filling pad (13) and a shielding layer (14); the outer wall of the fastening sleeve (12) is tightly wrapped with the filling pad (13), and the outer wall of the filling pad (13) is tightly fitted with the shielding layer (14).

4. The underground warning cable according to claim 3, characterized in that: The invention also includes a fireproof layer (15) and a waterproof layer (16); the outer wall of the shielding layer (14) is tightly fitted with the fireproof layer (15), and the outer wall of the fireproof layer (15) is tightly fitted with the waterproof layer (16).

5. The underground warning cable according to claim 4, characterized in that: The cable body (1) further comprises a filling ring (17) and a reinforced protective layer (18); the outer wall of the waterproof layer (16) is tightly fitted with the filling ring (17), and the interior of the filling ring (17) is filled with a fluorescent agent; the outer wall of the filling ring (17) is tightly fitted with the reinforced protective layer (18).

6. The underground warning cable according to claim 1, characterized in that: The upper protective structure (2) comprises an upper fixing plate (21), a positioning spring (22), a positioning screw (23) and a positioning nut (24); the outer walls on both sides of the upper protective structure (2) are fixedly connected to the upper fixing plate (21), and a first notch is reserved in the middle of the upper fixing plate (21); the outer side of the first notch is fixedly connected to the positioning spring (22), and the top of the positioning spring (22) is fixedly connected to the positioning screw (23); the bottom of the positioning screw (23) is through-connected to the first notch, and the outer wall of the positioning screw (23) is threadedly connected to the positioning nut (24).

7. The underground warning cable according to claim 1, characterized in that: The lower protective structure (3) comprises a lower fixing plate (31), both sides of the lower protective structure (3) are fixedly connected to the lower fixing plate (31), and a second notch is reserved in the middle of the lower fixing plate (31), and the second notch is through-connected to the positioning screw (23).

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