Power and control combined high-wear-resistance reel cable for high-speed movement

Abstract

The utility model relates to the field of cables, in particular to a power and control combined high-wear-resistance reel cable for high-speed movement, which comprises a total cable core and a sheath layer coated outside the total cable core. The main cable core comprises at least one control cable unit used for transmitting control signals and at least one power cable unit used for transmitting electric power, the control cable unit and the power cable unit are twisted in a regular twisting mode, the outer diameter of the control cable unit is equal to that of the power cable unit after twisting, and the outer diameter of the control cable unit is equal to that of the power cable unit after twisting. The sheath layer is vulcanized through steam in the pipeline, so that the molecular structure of the vulcanized sheath layer is changed from a linear structure to a net structure, and when the cable is used, the wear-resisting property of the reel cable can be improved, the working environment of high-speed movement of a mine machine under a mine can be met, and the occurrence of cable faults can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of cables, in particular to a high-speed mobile power and control combined high-wear-resistant reel cable. Background Art

[0002] In mines, a large number of cables are needed to provide power and signals for various equipment. The existing control cables and power cables used in mines are independent units, and they are all ordinary structural soft cables. Due to the harsh environment of mines and the increasing frequency of movement of mining machinery and equipment, ordinary structural soft cables can no longer meet the high-speed movement requirements of mining machinery. Under high-speed movement, the control cable and the power cable will rub against each other, and both will also rub against the facilities in the mine. Under long-term friction, the cable will gradually wear out until the cable core is damaged, which will cause cable failure, and then cause abnormal shutdown of underground equipment, which will have a significant impact on the safe operation of the mine. Therefore, wear-resistant reel cables that meet both the control system and the power transmission system and can adapt to high-speed movement in mines have become an urgent need for mine sites. Utility Model Content

[0003] In view of this, the purpose of the utility model is to propose a high-wear-resistant reel cable with power and control combination for high-speed movement, so as to solve the technical problem of cable failure caused by passive friction of the cable when the mining machine moves at high speed in the prior art.

[0004] Based on the above purpose, the utility model provides a high-wear-resistant reel cable of a power and control combination for high-speed movement, including a main cable core and a sheath layer coated on the outside of the main cable core, the main cable core including at least one control cable unit for transmitting control signals and at least one power cable unit for transmitting electric power, the control cable unit and the power cable unit are twisted in a regular twisting manner, and after twisting, the outer diameter of the control cable unit is equal to the outer diameter of the power cable unit, the sheath layer is vulcanized by steam in a pipeline so that the molecular structure of the sheath layer after vulcanization is changed from a linear structure to a mesh structure.

[0005] Furthermore, the sheath layer is made of chlorosulfonated polyethylene.

[0006] Furthermore, the main cable core includes a control cable unit and three power cable units.

[0007] Furthermore, the control cable unit includes an insulating wire bundle and an insulating layer covering the outside of the insulating wire bundle, wherein the insulating wire bundle includes a middle filling strip and a plurality of insulating cores, and the plurality of insulating cores are twisted around the middle filling strip in a regular twisting manner.

[0008] Furthermore, the insulated wire core includes a first conductor and a first insulating layer coated on the outside of the conductor, wherein the first conductor is a Class 6 soft conductor, and the first conductor is formed by adding copper foil wires to the wire bundle and twisting the wire strands.

[0009] Furthermore, the isolation layer is made of polyurethane, and the middle filling strip is made of semi-vulcanized rubber strip.

[0010] Furthermore, the middle filling strip is shaped by a sizing die so that there is no gap between the insulating core and the middle filling strip.

[0011] Furthermore, the power cable unit includes a second conductor and a second insulating layer coated on the outside of the conductor. The second conductor adopts a Class 5 soft conductor, and the second conductor is formed by adding Kevlar fibers to the bundled wire strands and twisting the strands.

[0012] Furthermore, the first insulating layer and the second insulating layer are both insulated with EPDM rubber.

[0013] Furthermore, the first insulating layer and the second insulating layer are both vulcanized by steam in a pipeline.

[0014] The beneficial effects of the utility model are as follows: a high-wear-resistant reel cable with a power and control combination for high-speed movement is adopted according to the utility model, and the outer diameter of the control cable unit and the outer diameter of the power cable unit are equal after twisting, so that when the cable is moving, no spatial slippage occurs between the two. Therefore, when the cable is used in a mine, when the mining machine moves at high speed, the mutual friction between the control cable unit and the power cable unit inside the cable can be effectively reduced. In addition, the molecular structure of the sheath layer after vulcanization is transformed from a linear structure to a mesh structure, which can effectively increase the wear resistance of the sheath layer. Therefore, the reel cable proposed by the utility model can improve the wear resistance of the reel cable, meet the working environment of high-speed movement of mining machines in mines, and reduce the occurrence of cable failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or 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 in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a front cross-sectional view of the utility model;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0018] The markings in the figure are:

[0019] 1. Second conductor; 2. Second insulating layer; 3. Sheath layer; 4. First conductor; 5. First insulating layer; 6. Intermediate filling layer; 7. Isolation layer. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] The first aspect of the utility model provides a high wear resistance drum cable with power and control combination for high speed movement, such as Figure 1As shown, it includes a main cable core and a sheath layer 3 coated on the outside of the main cable core, the main cable core includes at least one control cable unit for transmitting control signals and at least one power cable unit for transmitting electric power, the control cable unit and the power cable unit are twisted in a regular twisting manner, specifically, they are twisted in regular layers of 1+6+12, and the model is established using CAD software, and the outer diameters of the control cable unit and the power cable unit are adjusted to ensure that there is no gap between the cable cores after twisting, and after twisting, the outer diameter of the control cable unit is equal to the outer diameter of the power cable unit, so that when the reel cable is moving, there will be no spatial slippage between the two. Therefore, when the cable is used in a mine, when the mining machine moves at high speed, the control cable unit inside the cable can be effectively reduced. The mutual friction between the element and the power cable unit, the sheath layer 3 is vulcanized by steam in the pipeline, so that the molecular structure of the vulcanized sheath layer 3 is changed from a linear structure to a mesh structure, which can effectively increase the wear resistance of the sheath layer 3. Specifically, during the extrusion of the sheath layer 3, the sheath layer 3 is vulcanized in the vulcanization pipeline of the extruder. During the production process, the sealed pipeline is at a steam pressure of 2.0Mpa, and the temperature in the pipeline is about 170°C. The sheath layer 3 can be quickly vulcanized in about 2 to 3 minutes at this temperature, so that the sheath layer 3 can pass 1 million wear resistance tests. The sheath layer 3 here can also play an insulating role. In addition, preferably, the sheath layer 3 adopts a chlorosulfonated polyethylene sheath, which can withstand high and low temperature cyclic alternating environments, and further meet the underground working environment.

[0023] As an implementation method, Figure 1 As shown, the total cable core includes a control cable unit and three power cable units, and the control cable unit and the power cable unit are in close contact and distributed in a circular array around the central axis of the reel cable, and the gaps in the reel cable can be filled with fillers.

[0024] As an implementation method, Figure 1 , Figure 2 As shown, the control cable unit includes an insulating wire bundle and an insulating layer 7 wrapped around the outside of the insulating wire bundle, wherein the insulating wire bundle includes an intermediate filling strip and a plurality of insulating cores, and the plurality of insulating cores are twisted around the intermediate filling strip using a regular twisting method. In this way, the displacement of the insulating cores when the reel cable moves at high speed can be reduced. Specifically, the twisting is also carried out in regular layers of 1+6+12, and the model is established using CAD software. The outer diameter of the wire core is adjusted to ensure that there is no gap between the cable cores after twisting, and a pitch twisting with a pitch diameter ratio of 8-10 times is adopted.

[0025] As an implementation method, Figure 1 , Figure 2As shown, the insulated wire core includes a first conductor 4 and a first insulating layer 5 wrapped around the outside of the conductor, wherein the first conductor 4 adopts a Class 6 soft conductor, and the first conductor 4 is formed by adding copper foil wire to the wire bundle and the strands are twisted, which greatly enhances the tensile strength of the conductor while ensuring the electrical performance. Here, the first insulating layer 5 adopts EPDM rubber insulation; the insulating layer is vulcanized by steam in the pipeline, and the molecular structure of the vulcanized insulating layer is changed from a linear structure to a mesh structure, thereby increasing the electrical and mechanical properties of the insulating layer, and the temperature resistance level of the insulating layer is increased to 150°C, which can almost meet the harsh use environment of existing mines.

[0026] In addition, if Figure 1 , Figure 2 As shown, the isolation layer 7 is made of polyurethane, and the high yield strength isolation layer 7 can ensure that the insulated wire core does not slide at all. The middle filling strip is made of semi-vulcanized rubber strip, and the middle filling strip is shaped by a sizing die so that there is no gap between the insulated wire core and the middle filling strip, so that the insulated wire core will not be displaced during movement, ensuring that the insulated core wire can move at high speed for more than 5 million times without breaking.

[0027] As an implementation method, Figure 1 As shown, the power cable unit includes a second conductor 1 and a second insulating layer 2 wrapped around the outside of the conductor. The second conductor 1 adopts a Class 5 soft conductor, and the second conductor 1 is formed by adding Kevlar fiber filaments to the bundled wire strands and twisting the strands. The tensile strength of the second conductor 1 is greatly enhanced while ensuring the electrical performance. The second insulating layer 2 also adopts EPDM rubber insulation. The second insulating layer 2 is vulcanized by steam in the pipeline, and the molecular structure of the vulcanized insulating layer is changed from a linear structure to a mesh structure, which increases the electrical and mechanical properties of the insulating layer. The temperature resistance level of the insulating layer is increased to 150°C, which can almost meet the harsh use environment of existing mines.

[0028] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0029] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A high-wear-resistant drum cable for high-speed mobile power and control combination, comprising a main cable core and a sheath layer (3) coated on the outside of the main cable core, characterized in that: The main cable core comprises at least one control cable unit for transmitting control signals and at least one power cable unit for transmitting electric power. The control cable unit and the power cable unit are twisted in a regular twisting manner, and after twisting, the outer diameter of the control cable unit is equal to the outer diameter of the power cable unit. The sheath layer (3) is vulcanized by steam in a pipeline so that the molecular structure of the sheath layer (3) after vulcanization is changed from a linear structure to a mesh structure; the sheath layer (3) adopts a chlorosulfonated polyethylene sheath.

2. A high wear-resistant drum cable with power and control combination for high-speed movement according to claim 1, characterized in that: The main cable core includes a control cable unit and three power cable units.

3. A high wear-resistant drum cable with power and control combination for high-speed movement according to claim 2, characterized in that: The control cable unit comprises an insulating wire bundle and an isolation layer (7) covering the outside of the insulating wire bundle, wherein the insulating wire bundle comprises a middle filling strip and a plurality of insulating wire cores, and the plurality of insulating wire cores are twisted around the middle filling strip in a regular twisting manner.

4. A high wear-resistant drum cable with power and control combination for high-speed movement according to claim 3, characterized in that: The insulated wire core comprises a first conductor (4) and a first insulating layer (5) coated on the outside of the conductor, wherein the first conductor (4) is a Class 6 soft conductor, and the first conductor (4) is formed by adding copper foil wires to the bundled wire strands and twisting the strands.

5. A high wear-resistant drum cable with power and control combination for high-speed movement according to claim 4, characterized in that: The isolation layer (7) is made of polyurethane, and the middle filling strip is made of a semi-vulcanized rubber strip.

6. A high wear-resistant drum cable with power and control combination for high-speed movement according to claim 5, characterized in that: The middle filling strip is shaped by a sizing die so that there is no gap between the insulating wire core and the middle filling strip.

7. A high wear-resistant drum cable with power and control combination for high-speed movement according to claim 6, characterized in that: The power cable unit comprises a second conductor (1) and a second insulating layer (2) coated on the outside of the conductor, the second conductor (1) is a Class 5 soft conductor, and the second conductor (1) is formed by adding Kevlar fibers to the strands and twisting the strands.

8. A high wear-resistant drum cable with power and control combination for high-speed movement according to claim 7, characterized in that: The first insulating layer (5) and the second insulating layer (2) are both insulated with EPDM rubber.

9. A high wear-resistant drum cable with power and control combination for high-speed movement according to claim 8, characterized in that: The first insulating layer (5) and the second insulating layer (2) are both vulcanized by steam in a pipeline.

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