Slow-release anti-freezing and anti-cracking low-voltage cable

Abstract

The application relates to the cable field and particularly discloses a slow-release anti-freezing and anti-cracking low-voltage cable which comprises a cable main body, a driving ring frame device connected with the cable main body, a soil breaking knife frame assembly connected with the driving ring frame device, a slow-release wall plate assembly connected with the cable main body and a wiring protection assembly connected with the cable main body; the slow-release wall plate assembly comprises a combined heating plate assembly connected with the cable main body and a connecting assembly connected with the combined heating plate assembly; the cable can be provided with the soil breaking knife frame assembly and can break and dig hard soil layers; the cable main body is externally provided with the combined heating plate assembly and the connecting assembly, the combined heating plate assembly and the connecting assembly can be matched and installed according to the length of the cable main body, the cable main body can be circularly and slowly heated, and the cable main body can be prevented from being frozen and cracked.

Description

Technical Field

[0001] This invention relates to the cable industry, specifically to a slow-release, freeze-resistant, and crack-resistant low-voltage cable. Background Technology

[0002] Cables can be classified into high-voltage cables and low-voltage cables based on voltage. Although low-voltage cable lines are more expensive and more difficult to lay and maintain compared to low-voltage overhead lines and low-voltage insulated overhead lines, they are widely used in low-voltage power distribution systems due to their advantages such as reliable operation, no need for poles, no land occupation, no obstruction of appearance, and less susceptibility to external influences.

[0003] During use, low-voltage cables are exposed to low temperatures in some areas, which can cause surface cracking of the cables over time, affecting the overall safety and stability of power supply and distribution lines. To address this issue, there is an urgent need to develop a slow-release, freeze-resistant, and crack-resistant low-voltage cable. Summary of the Invention

[0004] The purpose of this invention is to provide a slow-release, freeze-resistant, and crack-resistant low-voltage cable to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A slow-release, freeze-resistant, and crack-resistant low-voltage cable, comprising:

[0007] Cable body;

[0008] A drive ring frame device, wherein the drive ring frame device is connected to the cable body;

[0009] A soil-breaking cutter frame assembly, which is connected to a drive ring frame device, is used to cooperate with the drive ring frame device to complete the excavation of the soil layer.

[0010] A slow-release wall panel assembly, which is connected to the cable body, is used for slow-release heating of the cable body;

[0011] A wiring protection assembly, which is connected to the cable body and is used for wiring protection of the cable body;

[0012] The slow-release wall panel assembly includes:

[0013] A combined heating plate assembly, wherein the combined heating plate assembly is connected to the cable body;

[0014] A connecting component, which is connected to the combined heating plate assembly, is used for connecting and assembling the combined heating plate assemblies.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the cable can be equipped with a soil-breaking cutter assembly, which can break through and excavate in hard soil layers. At the same time, the cable body is equipped with a combined heating plate assembly and a connecting assembly, which can be matched and installed according to the length of the cable body, so as to realize circumferential slow-release heating of the cable body and prevent the cable body from freezing and cracking. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a slow-release antifreeze and crack-resistant low-voltage cable in an embodiment of the present invention.

[0017] Figure 2 This is a front view schematic diagram of the slow-release wall panel assembly in a slow-release antifreeze and crack-resistant low-voltage cable according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the internal structure of the heating element in a slow-release, antifreeze, and crack-resistant low-voltage cable according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the wiring protection component in a slow-release antifreeze and crack-resistant low-voltage cable according to an embodiment of the present invention.

[0020] In the diagram: 1-Cable body, 2-Drive ring frame device, 3-Soil-breaking cutter holder assembly, 4-Slow-release wall panel assembly, 5-Combined heating plate assembly, 6-Connecting assembly, 7-Wiring protection assembly, 201-Loop ring, 202-First driving component, 203-Connecting seat, 301-Connecting frame, 302-Soil-breaking cutter holder, 501-Heating component, 502-Armored wall, 503-Positioning protrusion, 601-Connecting groove, 602-Connecting conical seat, 603-Positioning tip, 701-Connecting frame, 702-Sleeve, 703-Insertion plate, 704-Connecting plate, 705-Threaded groove. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] A slow-release, freeze-resistant, and crack-resistant low-voltage cable, in one embodiment of the present invention, such as... Figure 1As shown, it includes: a cable body 1; a drive ring frame device 2, which is connected to the cable body 1; a soil-breaking blade assembly 3, which is connected to the drive ring frame device 2 and is used to cooperate with the drive ring frame device 2 to complete the soil wall excavation; a slow-release wall panel assembly 4, which is connected to the cable body 1 and is used for slow-release heating of the cable body 1; and a wiring protection assembly 7, which is connected to the cable body 1 and is used for wiring protection of the cable body 1. The slow-release wall panel assembly 4 includes: a combined heating plate assembly 5, which is connected to the cable body 1; and a connecting assembly 6, which is connected to the combined heating plate assembly 5 and is used for connecting and assembling the combined heating plate assemblies 5.

[0023] In one embodiment of the present invention:

[0024] like Figure 1 As shown, the drive ring frame device 2 includes: a collar 201, which is connected to the cable body 1; a first drive member 202, which is rotatably connected to the collar 201; the first drive member 202 is a hollow electric shaft seat; and a connecting seat 203, which is connected to the first drive member 202.

[0025] One end of the cable body 1 has a terminal shell that passes through the collar 201, the first driving member 202, and the connecting seat 203. Driven by the first driving member 202, the connecting seat 203 and the soil-breaking cutter assembly 3 can rotate axially. In areas with low temperatures, the rotating soil-breaking cutter assembly 3 can break through the soil layer, facilitating the burial of the cable body 1. Before pre-burying the cable body 1, according to the length of the pre-buried cable body 1, the external of the cable body 1 can be auxiliaryly protected by the combined heating plate assembly 5 and the connecting assembly 6. With the cooperation of the connecting assembly 6, several combined heating plate assemblies 5 can be spliced ​​together. Several externally installed slow-release wall panel assemblies 4 can protect the cable body 1 and provide slow-release heat to the cable body 1 to prevent the cable body 1 from freezing and cracking, thus achieving further protection for the cable body 1.

[0026] In one embodiment of the present invention:

[0027] like Figure 1 As shown, the soil-breaking blade assembly 3 includes: a connecting frame 301, which is connected to a connecting seat 203; and a soil-breaking blade 302, which is connected to the side of the connecting frame 301 away from the connecting seat 203.

[0028] When the first driving component 202 rotates, it drives the connecting frame 301 and several soil-breaking blade holders 302 to rotate axially, breaking through the soil layer of the pre-buried route. Simultaneously, as... Figure 1The rotating excavator shown can guide the soil backward. A searchlight and camera can be installed at the front of the middle part of the connecting frame 301 to facilitate real-time observation of the excavation route through external equipment (not shown in the figure) during excavation.

[0029] In one embodiment of the present invention:

[0030] like Figure 1 and Figure 2 As shown, the combined heating plate assembly 5 includes: a heating element 501, which is connected to the connecting assembly 6; the heating element 501 is an electric heating arc frame; an armored wall 502, which is connected to the side of the heating element 501 away from the connecting assembly 6; and a plurality of positioning protrusions 503, which are connected to the armored arm 502.

[0031] The heating element 501 is arranged in an arc shape, with four heating elements 501 forming a group. This can protect a local area of ​​the cable body 1. When the four heating elements 501 are in a certain position... Figure 3 When connecting as shown, adhesive is applied to the mating positions on the outside of the heating element 501. When the four heating elements 501 are connected as shown... Figure 3 When connected as shown, the four heating elements 501 can be bonded and fixed. When the heating elements 501 are turned on, they can provide circumferential slow-release heating to the cable body 1, preventing the cable body 1 from freezing and cracking. When several groups of heating elements 501 are in operation as shown... Figure 1 When connected in the indicated state, assembly and docking can be achieved through the connecting component 6. At the same time, the connecting component 6 can be embedded in the outer rubber layer of the cable body 1 to limit and fix the heating element 501 and the cable body 1. Meanwhile, the heating element 501 is provided with an armor wall 502, which can further improve the strength of the cable body 1. At the same time, several positioning protrusions 503 are equidistantly arranged on the outside of the armor wall 502. After the cable is pre-buried, the cable body 1 can be pressed down. The several positioning protrusions 503 are embedded in the soil layer to further prevent the cable body 1 from shifting after pre-buried.

[0032] The armor wall 502 can be multi-layered, including an insulation layer and a protective layer. The insulation layer is divided into two types: core insulation and tape insulation. Insulation covering the wire core is called core insulation; insulation formed by combining the insulated cores of a multi-core cable and then covering them is called tape insulation. The tape insulation is separated from the protective layer to form reliable ground insulation. The insulation layer is usually made of oil-impregnated paper, plastic, rubber, etc. The protective layer protects the insulation layer from damage by external forces and moisture intrusion during transportation, laying, and use. Paper-insulated cables typically have a protective layer consisting of an inner sheath and an outer sheath. The inner sheath is directly extruded onto the insulation layer, protecting it from moisture and preventing the insulating oil from leaking out, while also providing a certain mechanical strength. Inner sheaths are available in lead-sheathed, aluminum-sheathed, and PVC-sheathed types. The outer sheath protects the inner sheath, increasing the cable's ability to withstand mechanical forces and resist corrosion. The outer sheath includes an inner lining layer, a metal armor layer, and an outer sheath. The inner lining layer protects the metal sheath from damage by the metal armor layer and can be supplemented with anti-corrosion measures; the metal armor layer can withstand mechanical forces; the outer sheath layer protects the armor metal from external corrosion. This is the protective layer of plastic cables. Typically, a polyvinyl chloride (PVC) sheath is used outside the plastic insulation. Rubber cables also have a protective layer consisting of an inner and outer sheath. Inner sheaths include PVC sheaths, neoprene rubber sheaths (non-flammable rubber), and lead sheaths; outer sheaths include steel tape armor, rubber sheaths, and plastic sheaths.

[0033] In one embodiment of the present invention:

[0034] like Figure 2 and Figure 3 As shown, the connecting assembly 6 includes: a connecting groove 601, which is disposed on the outside of the heating element 501; a connecting conical seat 602 connected to the outside of the heating element 501, used to cooperate with the connecting groove 601 to complete the alignment and insertion connection of the heating element 501; and a plurality of positioning tips 603, which are connected to the inside of the heating element 501.

[0035] When several sets of heating elements 501 are subjected to such Figure 1 When installing at the indicated position, the connecting conical seat 602 on the outer side of the adjacent heating element 501 is inserted into the corresponding connecting groove 601. The maximum diameter of the connecting conical seat 602 is slightly larger than the diameter of the connecting groove 601. When the connecting conical seat 602 is inserted into the corresponding connecting groove 601, the assembly and docking between adjacent heating elements 501 can be completed. At the same time, when the heating element 501 is installed, it needs to be pressed towards the side of the cable body 1 to insert several positioning tips 601 into the outer rubber layer of the cable body 1 to complete the limiting and fixing of the heating element 501 and the cable body 1.

[0036] In one embodiment of the present invention:

[0037] like Figure 1 and Figure 4 As shown, the wiring protection assembly 7 includes: a connecting frame 701, which is connected to the end of the cable body 1 away from the drive ring frame device 2; at least two sleeves 702, which are connected to both sides of the connecting frame 701; and at least two insert plates 703, which are inserted and movably connected to the sleeves 702.

[0038] A through groove (not shown in the figure) is provided on the top side of the connecting frame 701. The through groove can be used for the insertion and connection of the plug plate 703. When the plug plate is opened, the cable head wiring operation can be completed at the through position of the connecting frame 701. After the wiring is completed, the plug plate 703 can be lowered and inserted into the connecting frame 701 to complete the protection of the wiring position of the cable body 1.

[0039] In one embodiment of the present invention:

[0040] like Figure 1 and Figure 4 As shown, the wiring protection assembly 7 further includes: a connecting plate 704, which is connected to the connecting frame 701; and a threaded groove 705, which is disposed inside the connecting plate 704.

[0041] The connecting plate 704 is externally connected to the installed heating element 501. It can be used with the internal threaded groove 705 of the connecting plate 704 and bolts (not shown in the figure) to achieve a fixed connection between the connecting frame 701 and the heating element 501. The length of the cable body 1 and the number of heating elements 501 are not limited to those shown in the figure and can be selected according to actual needs.

[0042] The working principle of this invention is:

[0043] In summary, the terminal shell at one end of the cable body 1 passes through the collar 201, the first driving member 202, and the connecting seat 203. Driven by the first driving member 202, it can drive the connecting seat 203 and the soil-breaking cutter assembly 3 to rotate axially. In areas with low temperatures, the rotating soil-breaking cutter assembly 3 can break through the soil layer, facilitating the burial of the cable body 1. Before pre-burying the cable body 1, according to the length of the pre-buried cable body 1, auxiliary protection can be provided to the outside of the cable body 1 through the combined heating plate assembly 5 and the connecting assembly 6. With the cooperation of the connecting assembly 6, several combined heating plate assemblies 5 can be spliced ​​together. Several externally installed slow-release wall panel assemblies 4 can protect the cable body 1 and provide slow-release heating to the cable body 1 to prevent the cable body 1 from freezing and cracking, thus achieving further protection for the cable body 1. When the first driving member 202 rotates, it can drive the connecting frame 301 and several soil-breaking cutter assemblies 302 to rotate axially, breaking through the soil layer of the pre-buried route. At the same time, if Figure 1The rotating excavator, as shown, can guide soil backward. A searchlight and camera can be installed at the front center of the connecting frame 301 to facilitate real-time monitoring of the excavation route via external equipment (not shown in the figure) during excavation. The heating element 501 is arc-shaped, with four heating elements 501 forming a group, which can protect a localized area of ​​the cable body 1. When the four heating elements 501... Figure 3 When connecting as shown, adhesive is applied to the mating positions on the outside of the heating element 501. When the four heating elements 501 are connected as shown... Figure 3 When connected as shown, the four heating elements 501 can be bonded and fixed. When the heating elements 501 are turned on, they can provide circumferential slow-release heating to the cable body 1, preventing the cable body 1 from freezing and cracking. When several groups of heating elements 501 are in operation as shown... Figure 1 When connected in the indicated state, assembly and docking can be achieved through the connecting component 6. At the same time, the connecting component 6 can be embedded in the outer rubber layer of the cable body 1 to limit and fix the heating element 501 and the cable body 1. Meanwhile, the heating element 501 is provided with an armor wall 502, which can further improve the strength of the cable body 1. At the same time, several positioning protrusions 503 are equidistantly arranged on the outside of the armor wall 502. After the cable is pre-buried, the cable body 1 can be pressed down. The several positioning protrusions 503 are embedded in the soil layer to further prevent the cable body 1 from shifting after pre-buried.

[0044] When several sets of heating elements 501 are subjected to such Figure 1 When aligning the heating elements 501 at the indicated positions, the connecting conical seat 602 on the outer side of the adjacent heating element 501 is inserted into the corresponding connecting groove 601. The maximum diameter of the connecting conical seat 602 is slightly larger than the diameter of the connecting groove 601. When the connecting conical seat 602 is inserted into the corresponding connecting groove 601, the assembly and docking between adjacent heating elements 501 can be completed. At the same time, when the heating element 501 is installed, it needs to be pressed towards the side of the cable body 1 to insert several positioning tips 601 into the outer rubber layer of the cable body 1, thus completing the limiting and fixing of the heating element 501 and the cable body 1. A through groove is provided on the top side of the connecting frame 701. (Not shown in the figure) The through groove can be used for the insertion and connection of the plug plate 703. When the plug plate is opened, the cable head wiring operation can be completed at the through position of the connecting frame 701. After the wiring is completed, the plug plate 703 can be lowered and inserted into the connecting frame 701 to protect the wiring position of the cable body 1. The connecting plate 704 is connected to the outside of the installed heating element 501. It can cooperate with the internal thread groove 705 and bolts (not shown in the figure) of the connecting plate 704 to realize the fixed connection between the connecting frame 701 and the heating element 501. The length of the cable body 1 and the number of heating elements 501 are not limited to those shown in the figure and can be selected according to actual needs.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A slow-release, freeze-resistant, and crack-resistant low-voltage cable, characterized in that, include: Cable body; A drive ring frame device, wherein the drive ring frame device is connected to the cable body; The soil-breaking blade assembly is connected to the drive ring frame device and is used to cooperate with the drive ring frame device to complete the soil wall excavation; the slow-release wall panel assembly is connected to the cable body and is used for the slow-release heating of the cable body. A wiring protection assembly, connected to the cable body, is used for wiring protection of the cable body; wherein, the slow-release wall panel assembly includes: a combined heating plate assembly, connected to the cable body; a connecting assembly, connected to the combined heating plate assembly, for connecting and assembling the combined heating plate assemblies; the drive ring frame device includes: a collar, connected to the cable body; a first drive member, rotatably connected to the collar; the first drive member is a hollow electric shaft seat; a connecting seat, connected to the first drive member; the soil-breaking blade holder assembly includes: a connecting frame, connected to the connecting seat; a soil-breaking blade holder, connected to the side of the connecting frame away from the connecting seat; The combined heating plate assembly includes: a heating element connected to a connecting assembly; an armored wall connected to the side of the heating element away from the connecting assembly; and several positioning protrusions connected to the armored wall. The connecting assembly includes: a connecting groove disposed on the outside of the heating element; a connecting conical seat connected to the outside of the heating element for engaging with the connecting groove to complete the alignment and insertion connection of the heating element; and several positioning tips connected to the inside of the heating element. The wiring protection assembly includes: a connecting frame connected to the end of the cable body away from the drive ring frame device; at least two sleeves connected to both sides of the connecting frame; and at least two insert plates movably connected to the sleeves.

2. The slow-release, freeze-resistant, and crack-resistant low-voltage cable according to claim 1, characterized in that, The wiring protection assembly further includes: a connecting plate, which is connected to the connecting frame; and a threaded groove, which is disposed inside the connecting plate.

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