A new type of heavy-duty power cord

Abstract

This utility model relates to the technical field of lifting power cords, specifically a novel lifting power cord, comprising: an inner core and an outer inner sheath, with an outer sheath fitted over the outer wall of the inner sheath; a reactive wire forming a closed loop is installed inside the outer sheath, the reactive wire being a metal wire made of a conductive material, and the closed loop having a power inlet; a portion of the reactive wire in the closed loop is distributed along the axial direction of the outer sheath; the tensile strength of the reactive wire is between the tensile strengths of the inner core and the outer sheath; the outer sheath also incorporates a sensing component for detecting the breakage of the closed loop. In this utility model, when the lifting load of the lifting power cord gradually increases to the warning line, the breakage of the reactive wire can warn workers, preventing the lifting power cord from breaking due to the increased load.

Description

Technical Field

[0001] This utility model relates to the technical field of heavy-duty power cords, specifically a new type of heavy-duty power cord. Background Technology

[0002] The main purpose of the load-bearing power cord is to support the weight of the load and supply power to it. The performance of the power cord itself is not affected. The load-bearing power cord needs to undergo a load test before leaving the factory to ensure that it can meet the maximum load-bearing capacity required by the design.

[0003] However, in practical applications, the power cord for lifting loads is subject to many unexpected situations, which cause the load intensity on the power cord to increase. For example, falling trees, external pulling forces, or increased load intensity. As the load intensity on the power cord gradually increases, its bearing capacity gradually reaches its limit, which can easily lead to the breakage or cessation of operation of the power cord, which is not easily detected by the staff in time. Utility Model Content

[0004] This utility model provides a new type of heavy-duty power cord. When the load on the power cord gradually increases to the warning line, the breaking of the reaction wire can warn the workers and prevent the power cord from breaking due to the increased load.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A new type of heavy-duty power cord includes:

[0007] The inner core and its outer inner sheath, wherein the outer wall of the inner sheath is fitted with an outer sheath;

[0008] The outer sheath is internally fitted with a reaction wire that forms a closed loop. The reaction wire is a metal wire made of a conductive material, and the closed loop has a power input.

[0009] A portion of the reactive wire in the closed loop is distributed along the axial direction of the outer sheath;

[0010] The tensile strength of the reactive wire is between that of the inner core and the outer sheath;

[0011] The outer sheath also contains a sensing component designed to detect when a closed loop is broken.

[0012] Optionally, the sensing component includes a signal transmitter embedded inside the outer sheath, the signal transmitter being made of a flexible circuit board, the signal transmitter being connected to a closed loop, and the signal transmitter being capable of transmitting electrical signals to the outside.

[0013] Optionally, the outer sheath is designed with two mounting flanges, which are located near both ends of the outer sheath. The mounting flanges are integrally formed with the outer sheath, and a closed loop is designed between the two mounting flanges.

[0014] Optionally, an inner armor layer is designed between the inner sheath and the outer sheath, and the inner armor layer has an inner steel wire interwoven structure.

[0015] Optionally, the inner core includes three copper cores, each of which is tightly fitted with an insulating layer.

[0016] Optionally, there is an assembly gap between the insulating layer and the inner sheath, and the assembly gap is filled with a filler material, which is cotton or linen.

[0017] Optionally, the surface of the copper core is nickel-plated.

[0018] This utility model provides a novel heavy-duty power cord with the following advantages:

[0019] By ensuring the tensile strength of the reaction wire falls between that of the inner core and the outer sheath, and since the tensile strength of the outer sheath is lower than that of the inner core, when the power cable is subjected to external force, the outer sheath may deform first due to the higher tensile strength of the inner core. This deformation of the outer sheath causes the reaction wire to be stretched simultaneously. When the reaction wire breaks, the closed loop is disconnected. At this point, the sensing component can detect the disconnection of the closed loop, allowing staff to know that the load-bearing capacity or tensile strength of the power cable has reached the warning threshold, thus preventing power accidents in advance. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This utility model Figure 1 Front view;

[0022] Figure 3 This utility model is based on Figure 2 A schematic diagram of the structure viewed in section AA;

[0023] Figure 4 This is a schematic diagram of the internal structure of the lifting power cord of this utility model;

[0024] Figure 5 This is a schematic diagram of a closed loop structure according to the present invention;

[0025] Figure 6 This is a schematic diagram of another closed loop structure of this utility model.

[0026] In the diagram: 1. Copper core; 2. Insulation layer; 3. Filler; 4. Inner sheath; 5. Inner armor layer; 6. Outer sheath; 7. Assembly flange; 8. Reaction wire; 9. Signal transmitter. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1 to 6 This utility model provides a technical solution: a novel heavy-duty power cord, comprising:

[0029] The inner core and its outer inner sheath 4 are covered by an outer sheath 6 on the outer wall of the inner sheath 4. A reaction wire 8 forming a closed loop is installed inside the outer sheath 6. The reaction wire 8 is a metal wire made of a conductive material. The closed loop has a power inlet. Some of the reaction wires 8 in the closed loop are distributed along the axial direction of the outer sheath 6. The tensile strength of the reaction wire 8 is between that of the inner core and the outer sheath 6. A sensing component for detecting the opening of the closed loop is also designed inside the outer sheath 6.

[0030] In existing technology, when a power cord for a load-bearing device breaks due to overload, workers can detect it afterward. However, as the load on the power cord gradually increases until it breaks, there is a long reaction time. We need to be aware of the potential breakage within this reaction time. Therefore, in this invention, the tensile strength of the reaction wire 8 is positioned between the tensile strengths of the inner core and the outer sheath 6. Since the tensile strength of the outer sheath 6 is lower than that of the inner core, and the outer sheath 6 needs to have sufficient tensile strength, this prevents breakage during installation, tensioning, or external stress. In the event of a crack or tensile breakage, when the power cord is subjected to external force, the outer sheath 6 may deform first due to the high tensile strength of the inner core. The deformation of the outer sheath 6 will cause the reaction wire 8 to be stretched simultaneously. When the reaction wire 8 breaks, the inner core is still capable of functioning. At this time, the breakage of the reaction wire 8 can be designed as a warning line. After the reaction wire 8 breaks, the closed circuit is in an open state. At this time, the sensing component can detect the breakage of the closed circuit. At this time, the staff can know that the load-bearing capacity or tensile strength of the suspended power cord has reached the warning threshold, and can prevent the occurrence of power accidents in advance.

[0031] The outer sheath 6 can be made of polyvinyl chloride or cross-linked polyethylene.

[0032] Figure 5 and Figure 6 Two closed-loop structural designs are provided.

[0033] In a preferred embodiment, the sensing component includes a signal transmitter 9 embedded within the outer sheath 6. The signal transmitter 9 is made of a flexible circuit board and is connected to a closed loop. The signal transmitter 9 is capable of transmitting electrical signals to the outside. (See reference...) Figures 3 to 6 In this embodiment, the flexibility of the signal transmitter 9 allows it to adapt to bending or winding of the power cord to a certain extent, ensuring the normal operation of the signal transmitter 9. Secondly, the signal transmitter 9 can send electrical signals to the external control center or command room when it is powered on. When the reaction wire 8 breaks, the signal transmitter 9 is connected to the closed circuit, and the breakage of the closed circuit causes the signal transmitter 9 to malfunction. Therefore, when the signal transmitter 9 stops sending electrical signals to the command center, it can be determined that the reaction wire 8 has reached its tensile strength limit and the load-bearing power cord of this part needs to be inspected.

[0034] Based on the sensing component embodiment, the outer sheath 6 is designed with two mounting flanges 7. The two mounting flanges 7 are located near both ends of the outer sheath 6. The mounting flanges 7 are integrally formed with the outer sheath 6, and the closed loop is designed between the two mounting flanges 7. Please refer to [link to relevant documentation]. Figure 1 and Figure 4 The two mounting flanges 7 are located at both ends of the outer sheath 6, which facilitates the load testing of the power cord and allows the load to be assembled and connected to the power cord through the mounting flanges 7.

[0035] In a preferred embodiment, an inner armor layer 5 is designed between the inner sheath 4 and the outer sheath 6. The inner armor layer 5 has an inner steel wire interwoven structure. By adding the inner armor layer 5, the tensile strength and puncture strength of the lifting power cord can be improved, the inner core can be protected, and the mechanical strength of the device can also be enhanced.

[0036] Furthermore, the inner core comprises three copper cores 1, each of which is tightly fitted with an insulating layer 2. Please refer to [link / reference]. Figure 1 and Figure 3 By designing three copper cores, it is possible to provide a more stable power supply to the load, such as three-phase electrical loads or equipment.

[0037] Furthermore, there is an assembly gap between the insulation layer 2 and the inner sheath 4, and the assembly gap is filled with filler 3. The filler 3 is made of cotton and linen. Cotton and linen are soft, have good cabling effect, high temperature resistance, and good strength, which can better increase the bending performance and tensile strength of the outer sheath 6. It can also be filled with cotton and linen silk, cotton thread or hemp rope and other filler items.

[0038] Furthermore, the surface of copper core 1 is nickel-plated. In order to improve the durability and safety of the heavy-duty power cord, special treatment is required for copper core 1, such as nickel plating or tin plating, to enhance its corrosion resistance and hardness, thereby increasing the life of the wire.

[0039] By utilizing the above-mentioned structures, when the load on the power supply line gradually increases to the warning line, the breaking of the reaction wire 8 can warn the workers and prevent the power supply line from breaking due to the increased load.

[0040] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the specification and drawings can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel heavy-duty power cord, characterized in that: include: The inner core and its outer inner sheath (4), the outer wall of the inner sheath (4) is fitted with an outer sheath (6); The outer sheath (6) is equipped with a reaction wire (8) that forms a closed loop. The reaction wire (8) is a metal wire made of a conductive material. The closed loop has a power input. The portion of the reaction wire (8) in the closed loop is distributed along the axial direction of the outer sheath (6); The tensile strength of the reactive wire (8) is between that of the inner core and the outer sheath (6); The outer sheath (6) is also designed with a sensing component to detect the breakage of the closed loop.

2. The novel heavy-duty power cord according to claim 1, characterized in that: The sensing component includes a signal transmitter (9) embedded inside the outer sheath (6), the signal transmitter (9) being made of a flexible circuit board, the signal transmitter (9) being connected to a closed loop, and the signal transmitter (9) being able to transmit electrical signals to the outside.

3. The novel heavy-duty power cord according to claim 2, characterized in that: The outer sheath (6) is designed with two mounting flanges (7). The two mounting flanges (7) are close to both ends of the outer sheath (6). The mounting flanges (7) are integrally formed with the outer sheath (6), and the closed loop is designed between the two mounting flanges (7).

4. The novel heavy-duty power cord according to claim 1, characterized in that: An inner armor layer (5) is designed between the inner sheath (4) and the outer sheath (6), and the inner armor layer (5) is an inner steel wire interwoven structure.

5. The novel heavy-duty power cord according to any one of claims 1-4, characterized in that: The inner core includes three copper cores (1), and each copper core (1) is tightly fitted with an insulating layer (2).

6. The novel heavy-duty power cord according to claim 5, characterized in that: There is an assembly gap between the insulating layer (2) and the inner sheath (4), and the assembly gap is filled with a filler (3), which is made of cotton and linen.

7. The novel heavy-duty power cord according to claim 5, characterized in that: The surface of the copper core (1) is nickel plated.

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