Multi-layer rat-bite-resistant cable

Abstract

The utility model discloses a multi-layer rat-bite-resistant cable, which comprises a plurality of cable cores, the surfaces of which are coated with first insulating layers, the outer sides of the plurality of cable cores are jointly sleeved with a second insulating layer, and the outer wall of the second insulating layer is sleeved with a plurality of metal protective hoses along the length direction of the second insulating layer; according to the utility model, the metal protection hoses are arranged, so that a good external protection function can be provided for the cable, the probability that the cable is damaged due to biting of wild animals is effectively reduced, and when a certain section of metal protection hose is damaged, the damaged metal protection hose is broken by using a tool and is taken down from the cable, and then the cable is protected. When the cable is used, the remaining metal protection hoses can be pushed to move on the outer side of the second insulating layer in the length direction of the cable, one end of the cable is sleeved with a new metal protection hose again, and the adjacent metal protection hoses are connected again, so that the cable can be normally used, and the use cost of the cable is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a multi-layer rat-bite-resistant cable. Background Art

[0002] When conducting geological exploration, hydrological monitoring or other scientific research projects in the field, most of the various monitoring probes used need to be connected to the host using cables. When unattended, the cables are often bitten by wild animals such as insects and mice, and are easily damaged, resulting in disconnection between the monitoring probe and the host, affecting the normal operation of the monitoring. Therefore, armored cables are often used to connect equipment when conducting field scientific research projects.

[0003] Currently, most armored cables usually have a metal wire braided mesh tube or a metal corrugated hose as the outermost armor layer to provide protection for the wires. However, when a part of the armor layer is damaged or broken, it is often impossible to replace it alone, and the entire cable needs to be replaced, which is costly and needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-layer rat-bite resistant cable to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A multi-layer rat-bite resistant cable comprises a plurality of wire cores whose surfaces are covered with a first insulating layer, a second insulating layer being commonly sheathed on the outer sides of the plurality of wire cores, a plurality of metal protective hoses being sheathed on the outer walls of the second insulating layer along their length direction, the two ends of the metal protective hoses being respectively fixedly connected with matching first connectors and second connectors, the second insulating layer passing through the inner sides of the first connector and the second connector, and every two adjacent metal protective hoses being detachably connected through the cooperation of the first connector and the second connector.

[0007] As a further solution of the utility model: the first connecting member includes a first sleeve fixedly sleeved on one end of the metal protective hose, a hexagonal ring is fixedly sleeved on the outer wall of the first sleeve near one end of the metal protective hose, an external thread is provided on the outer wall of the first sleeve away from the end of the metal protective hose, the second connecting member includes a second sleeve fixedly sleeved on the other end of the metal protective hose, a nut is provided on the second sleeve, the nut is sleeved on the second sleeve through a through hole, and the inner diameter of the through hole is smaller than the outer diameter of the second sleeve at the largest point, and the nut is adapted to the external thread on the first sleeve.

[0008] As a further solution of the utility model: a sealing ring is embedded in one end of the second sleeve away from the metal protective hose.

[0009] As a further solution of the utility model: a core tube is arranged in the second insulating layer, a plurality of spacers are integrally formed on the outer wall of the core tube, a positioning groove is formed between every two adjacent spacers and the outer wall of the core tube, and the wire core is located in the corresponding positioning groove.

[0010] As a further solution of the utility model: a plurality of tensile ropes are passed through the second insulating layer.

[0011] As a further solution of the utility model: the outer wall of the second insulating layer is covered with a polytetrafluoroethylene hose, and the polytetrafluoroethylene hose is located inside the metal protective hose.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model utilizes the setting of the metal protective hose to provide good external protection function for the cable, thereby effectively reducing the probability of the cable being damaged by being bitten by wild animals, and when a section of the metal protective hose is damaged, the damaged metal protective hose can be broken open with a tool and removed from the cable, and the remaining metal protective hose can be pushed to move along the length direction of the cable on the outside of the second insulating layer, and a new section of metal protective hose can be re-inserted on one end of the cable, and the adjacent metal protective hoses can be connected again, and then the cable can be used normally, reducing the use cost of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a multi-layer rat-bite-resistant cable.

[0015] Figure 2 The figure is a schematic diagram of the structure of a metal protective hose in a multi-layer rat-bite-resistant cable.

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0017] Among them, the core tube 1, the spacer 2, the positioning groove 3, the wire core 4, the first insulating layer 5, the second insulating layer 6, the tensile rope 7, the polytetrafluoroethylene hose 8, the metal protective hose 9, the first sleeve 10, the external thread 11, the hexagonal ring 12, the second sleeve 13, the nut 14, the through hole 15, and the sealing ring 16. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figures 1 to 3 In an embodiment of the utility model, a multi-layer rat-bite-resistant cable includes a plurality of wire cores 4 whose surfaces are covered with a first insulating layer 5, and a second insulating layer 6 is commonly sheathed on the outer sides of the plurality of wire cores 4. The outer walls of the second insulating layer 6 are sheathed with a plurality of metal protective hoses 9 along their length direction. The metal protective hoses 9 are stainless steel wire braided mesh tubes or stainless steel corrugated hoses. The two ends of the metal protective hoses 9 are respectively fixedly connected with matching first connectors and second connectors. The second insulating layer 6 passes through the inner sides of the first connector and the second connector, and every two adjacent metal protective hoses 9 are detachably connected through the cooperation of the first connector and the second connector.

[0020] The utility model adopts the above-mentioned scheme and utilizes the setting of the metal protective hose 9 to provide good external protection function for the cable, and can effectively reduce the probability of the cable being damaged by being bitten by wild animals. When a certain section of the metal protective hose 9 is damaged, the damaged metal protective hose 9 can be broken open with a cutting tool or tin shears, and after being removed from the cable, the remaining metal protective hose 9 can be pushed and moved outside the second insulating layer 6 along the length direction of the cable, and a new section of metal protective hose 9 can be re-inserted at one end of the cable, and the adjacent metal protective hoses 9 can be connected again, and then it can be used normally, thereby reducing the cost of using the cable.

[0021] Specific combination Figure 2 and Figure 3 In one embodiment of the utility model, the first connecting member includes a first sleeve 10 fixedly sleeved on one end of the metal protective hose 9, a hexagonal ring 12 is fixedly sleeved on the outer wall of the first sleeve 10 near one end of the metal protective hose 9, an external thread 11 is provided on the outer wall of the first sleeve 10 away from the metal protective hose 9, the second connecting member includes a second sleeve 13 fixedly sleeved on the other end of the metal protective hose 9, a nut 14 is provided on the second sleeve 13, the nut 14 is sleeved on the second sleeve 13 through a through hole 15, and the inner diameter of the through hole 15 is smaller than the outer diameter of the second sleeve 13 at the maximum point, the nut 14 is adapted to the external thread 11 on the first sleeve 10, and a sealing ring 16 is embedded in the end of the second sleeve 13 away from the metal protective hose 9.

[0022] By rotating the nut 14 so that the nut 14 cooperates with the external thread 11, the first sleeve 10 and the second sleeve 13 can be fixedly connected, thereby realizing the connection of two adjacent metal protective hoses 9, which is simple and convenient to operate.

[0023] Specific combination Figure 1 In one embodiment of the utility model, a core tube 1 is arranged in the second insulating layer 6, and a plurality of spacers 2 are integrally formed on the outer wall of the core tube 1, and a positioning groove 3 is formed between every two adjacent spacers 2 and the outer wall of the core tube 1, and the wire core 4 is located in the corresponding positioning groove 3.

[0024] By providing the core tube 1 and a plurality of spacers 2, a support frame can be formed inside the cable to improve the strength of the cable, and the positioning grooves 3 can be used to separate and position each wire core 4.

[0025] Specific combination Figure 1 In one embodiment of the utility model, a plurality of tensile cords 7 are provided on the second insulating layer 6 to improve the tensile strength of the cable. The tensile cords 7 can be made of metal wires or other high-strength fiber wires.

[0026] Specific combination Figure 1 In one embodiment of the utility model, the outer wall of the second insulating layer 6 is covered with a polytetrafluoroethylene hose 8, and the polytetrafluoroethylene hose 8 is located in the metal protective hose 9. Polytetrafluoroethylene has good corrosion resistance and can effectively prevent the corrosive liquid that penetrates into the metal protective hose 9 from corroding the cable. Polytetrafluoroethylene has good wear resistance and self-lubricating properties, which can reduce the resistance encountered by the metal protective hose 9 when moving outside the second insulating layer 6.

[0027] In addition, in some preferred embodiments of the present invention, the core tube 1, the first insulating layer 5 and the second insulating layer 6 are made of one of the materials selected from polyvinyl chloride, polyethylene, silicone, fluoroplastic, silicone rubber, chloroprene rubber and the like.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-layer rat-bite resistant cable, characterized in that: The invention comprises a plurality of wire cores (4) whose surfaces are covered with a first insulating layer (5); a second insulating layer (6) is commonly sheathed on the outer sides of the plurality of wire cores (4); a plurality of metal protective hoses (9) are sheathed on the outer wall of the second insulating layer (6) along its length direction; the two ends of the metal protective hoses (9) are respectively fixedly connected with a matching first connecting piece and a second connecting piece; the second insulating layer (6) passes through the inner sides of the first connecting piece and the second connecting piece; and every two adjacent metal protective hoses (9) are detachably connected through the cooperation of the first connecting piece and the second connecting piece.

2. The multi-layer rat-bite resistant cable according to claim 1, characterized in that: The first connecting member comprises a first sleeve (10) fixedly sleeved on one end of a metal protective hose (9); a hexagonal sleeve (12) is fixedly sleeved on the outer wall of the first sleeve (10) near one end of the metal protective hose (9); an external thread (11) is provided on the outer wall of the first sleeve (10) away from the end of the metal protective hose (9); the second connecting member comprises a second sleeve (13) fixedly sleeved on the other end of the metal protective hose (9); a nut (14) is provided on the second sleeve (13); the nut (14) is sleeved on the second sleeve (13) through a through hole (15); the inner diameter of the through hole (15) is smaller than the outer diameter of the second sleeve (13) at its maximum point; the nut (14) is adapted to the external thread (11) on the first sleeve (10).

3. The multi-layer rat-bite resistant cable according to claim 2, characterized in that: A sealing ring (16) is embedded in one end of the second sleeve (13) away from the metal protective hose (9).

4. The multi-layer rat-bite resistant cable according to claim 1, characterized in that: A core tube (1) is arranged in the second insulating layer (6); a plurality of spacers (2) are integrally formed on the outer wall of the core tube (1); a positioning groove (3) is formed between every two adjacent spacers (2) and the outer wall of the core tube (1); and the wire core (4) is located in the corresponding positioning groove (3).

5. The multi-layer rat-bite resistant cable according to claim 1, characterized in that: A plurality of tension-resistant ropes (7) are passed through the second insulating layer (6).

6. The multi-layer rat-bite resistant cable according to claim 1, characterized in that: The outer wall of the second insulating layer (6) is coated with a polytetrafluoroethylene hose (8), and the polytetrafluoroethylene hose (8) is located inside the metal protective hose (9).

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