Rubber jacketed flexible cable for coal mining machine
By designing the structure, elastic inner layer, and buffer layer of the coal mining machine with a rubber sleeve soft cable, the problem that the rubber cover is easily damaged under frequent stretching and bending. Reduce replacement costs.
Patent Information
- Application Number
- CN202420060798.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-01-10
AI Technical Summary
The rubber sheath is prone to breaking and breaking under frequent stretching and bending, and has a short service life and needs to be replaced frequently, which is costly.
A soft cable for a coal mining machine for coal mines is designed. It adopts structures such as wear -resistant outer layers, elastic inner layers, waterproof layers, woven layers, and buffer layers. The buffer layer is set on the buffer layer. Reduce tension by squeezing buffer.
By reducing the degree of bending and stretching of the outer layer of wear -resistant layers, the service life of the rubber cover is prolonged, the frequency of the cable replacement is reduced, and the cost is reduced.
Smart Images
Figure CN222394596U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of soft cables, in particular to a rubber-sheathed soft cable for a coal mining machine in a coal mine. Background Art
[0002] Traditional flexible cables are mostly made of a layer of soft rubber material wrapped around the conductor to provide insulation and protection. This makes the flexible cable soft and can be bent at will, with good weather resistance, corrosion resistance, abrasion resistance and bending resistance. It is widely used in mobile electrical equipment, mining equipment, ships, construction machinery and other fields.
[0003] The rubber sheathed flexible cable for coal mining machines, due to its special use environment, will be frequently stretched, bent and rubbed with the frequent reciprocating movement of the coal mining machine. However, in the prior art, most of them only apply a wear-resistant coating on the rubber sheath to enhance the wear resistance of the cable. However, the flexibility of the cable is difficult to meet the working conditions of frequent stretching and bending. After long-term use, the rubber sheath will be damaged or broken, and the service life is short. Generally, the cable needs to be replaced in about three months, which is costly. Utility Model Content
[0004] In view of this, the purpose of the utility model is to provide a rubber sheathed flexible cable for a coal mining machine in a coal mine, so as to solve the problems in the prior art that the rubber sheath will be damaged or broken after long-term use, the service life is short, and the cost of replacing the cable is high.
[0005] The utility model solves the above technical problems through the following technical means:
[0006] A rubber sheathed soft cable for a coal mining machine in a coal mine comprises a main core and a rubber sheath arranged outside the main core, the rubber sheath comprises a wear-resistant outer layer and an elastic inner layer, the elastic inner layer is filled between the main core and the wear-resistant outer layer, a buffer layer is arranged between the wear-resistant outer layer and the elastic inner layer, a plurality of buffer protrusions are arranged on the buffer layer, and when the cable is bent, the wear-resistant outer layer can reduce the tension on the outer surface of the wear-resistant outer layer by squeezing the buffer protrusions.
[0007] Furthermore, a waterproof layer is provided between the elastic inner layer and the buffer layer, the elastic inner layer is filled between the main line core and the waterproof layer, and the waterproof layer is a plurality of polyester films, and the plurality of polyester films are tightly wound.
[0008] Furthermore, a woven layer is provided between the buffer layer and the waterproof layer, and the woven layer is polypropylene hollow fiber.
[0009] Furthermore, the buffer layer is wrapped around the braided layer.
[0010] Furthermore, the main line cores are provided in multiple groups, the elastic inner layer is provided with multiple nylon ropes, and each of the nylon ropes is correspondingly arranged between two adjacent groups of main line cores.
[0011] Furthermore, a ground wire core is arranged at the center of the plurality of groups of main wire cores, the ground wire core is coated with a ground wire protection layer, and the main wire core is coated with a shielding layer.
[0012] Beneficial effects of the utility model:
[0013] The utility model provides a buffer layer and a buffer protrusion. When the cable is bent, the wear-resistant outer layer can squeeze the buffer protrusion, thereby reducing the stretching degree of the bending position of the wear-resistant outer layer, achieving the purpose of reducing the tension on the outer surface of the wear-resistant outer layer, slowing down the damage and breakage of the rubber sheath, and effectively extending the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the planar structure of a rubber-sheathed flexible cable for a coal mining machine of the utility model;
[0015] Figure 2 This is a three-dimensional structural schematic diagram of a buffer layer in a rubber-sheathed flexible cable for a coal mining machine of the utility model;
[0016] Among them, 1. main line core; 11. shielding layer; 2. wear-resistant outer layer; 3. elastic inner layer; 4. waterproof layer; 5. braided layer; 6. buffer layer; 61. buffer protrusion; 62. buffer cavity; 7. nylon rope; 8. ground wire core; 81. ground wire protection layer. DETAILED DESCRIPTION
[0017] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are only for exemplary descriptions, and they are only schematic diagrams, not physical diagrams, and cannot be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the figures may be omitted.
[0018] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the figures, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the figures are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0019] like Figure 1-Figure 2 As shown, the utility model is a rubber sheathed soft cable for a coal mining machine in a coal mine, comprising a main line core 1 and a rubber sheath arranged outside the main line core 1, the rubber sheath comprising a wear-resistant outer layer 2 and an elastic inner layer 3, the wear-resistant outer layer 2 and the elastic inner layer 3 are both made of TPU material with excellent mechanical properties such as tear resistance, compression resistance and wear resistance, and the outer surface of the wear-resistant outer layer 2 is coated with a wear-resistant coating to improve the wear resistance of the cable.
[0020] A waterproof layer 4, a braided layer 5 and a buffer layer 6 are arranged in sequence between the elastic inner layer 3 and the wear-resistant outer layer 2. The elastic inner layer 3 is filled between the waterproof layer 4 and the main core 1. The waterproof layer 4 is a plurality of polyester films, which are tightly wound. Even if the wear-resistant outer layer 2 is damaged, the main core 1 can be separated from the outside world to prevent external water stains from penetrating into the main core 1, effectively improving the waterproof performance of the cable. The braided layer 5 is made of polypropylene hollow fiber with a braiding density of 90-92.5%, which effectively improves the flexibility of the cable.
[0021] The buffer layer 6 is a single wrapping tape, and the buffer layer 6 is wrapped around the braided layer 5, and the wrapping overlap rate is 20%-30%. A plurality of buffer protrusions 61 are provided on the buffer layer 6, and a buffer cavity 62 is provided in the buffer protrusion 61. When the cable is bent, the wear-resistant outer layer 2 can squeeze the buffer protrusion 61, thereby reducing the stretching degree of the bending position of the wear-resistant outer layer 2, achieving the purpose of reducing the tension of the outer surface of the wear-resistant outer layer 2, slowing down the damage and breakage of the rubber sheath, and effectively extending the service life of the cable.
[0022] In this embodiment, multiple groups of main cores 1 are provided, and the elastic inner layer 3 is provided with multiple nylon ropes 7, and each nylon rope 7 is correspondingly arranged between two adjacent groups of main cores 1, which effectively improves the tensile strength of the cable.
[0023] In this embodiment, a ground core 8 is arranged in the center of multiple groups of main cores 1. The ground core 8 is covered with a ground protection layer 81. The ground protection layer 81 is made of elastic material and can absorb the tension from the main core 1, thereby forming protection for the main core 1. The main core 1 is covered with a shielding layer 11. The shielding layer 11 shields the electromagnetic field generated by the cable to protect the surrounding components.
[0024] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model. The technology, shape, and structure that are not described in detail in the utility model are all well-known technologies.
Claims
1. A rubber sheathed flexible cable for a coal mining machine, comprising a main core and a rubber sheath arranged outside the main core, characterized in that: The rubber sheath includes a wear-resistant outer layer and an elastic inner layer, the elastic inner layer is filled between the main line core and the wear-resistant outer layer, a buffer layer is arranged between the wear-resistant outer layer and the elastic inner layer, and a plurality of buffer protrusions are arranged on the buffer layer. When the cable is bent, the wear-resistant outer layer can reduce the tension on the outer surface of the wear-resistant outer layer by squeezing the buffer protrusions.
2. The rubber-sheathed flexible cable for coal mining machines according to claim 1 is characterized in that: A waterproof layer is arranged between the elastic inner layer and the buffer layer. The elastic inner layer is filled between the main line core and the waterproof layer. The waterproof layer is a plurality of polyester films, and the plurality of polyester films are tightly wound.
3. A rubber-sheathed flexible cable for a coal mining machine according to claim 2, characterized in that: A braided layer is arranged between the buffer layer and the waterproof layer, and the braided layer is polypropylene hollow fiber.
4. A rubber-sheathed flexible cable for a coal mining machine according to claim 3, characterized in that: The buffer layer is wrapped around the braided layer.
5. The rubber-sheathed flexible cable for coal mining machines according to claim 1, characterized in that: The main line cores are provided in multiple groups, the elastic inner layer is provided with multiple nylon ropes, and each of the nylon ropes is correspondingly arranged between two adjacent groups of main line cores.
6. A rubber-sheathed flexible cable for a coal mining machine according to claim 5, characterized in that: A ground wire core is arranged at the center of the plurality of groups of main wire cores, the ground wire core is coated with a ground wire protection layer, and the main wire core is coated with a shielding layer.