High-performance anti-twist power cable and MPP protection assembly thereof

Abstract

The present application relates to the technical field of cable, in particular to a high-performance anti-twist power cable and a MPP protection assembly thereof, the cable comprises an inner layer and an outer layer, and an anti-twist layer between the inner layer and the outer layer, the anti-twist layer comprises a first anti-twist strip and a second anti-twist strip wound on the outer side of the inner layer, the spiral direction of the first anti-twist strip is opposite to that of the second anti-twist strip, and the connection between the first anti-twist strip and the second anti-twist strip is detachable. The outer layer and the inner layer are tightly connected to fix the anti-twist layer inside the cable, the first anti-twist strip and the second anti-twist strip wound on the inner layer and having opposite spiral directions are used to limit the cable, and the detachable connection at the connection between the first anti-twist strip and the second anti-twist strip is connected together, the first anti-twist strip and the second anti-twist strip are staggered to form a mesh structure, no matter the cable is twisted clockwise or counterclockwise, the anti-twist strips can provide support force, and the anti-twist performance of the cable is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable, in particular to a high-performance anti-twist power cable and a MPP protection assembly thereof. BACKGROUND

[0002] The cable is a wire that is twisted by one or more insulated wires, and is wrapped with a metal shell and an insulating protective layer.

[0003] Chinese patent CN110428936B discloses an anti-twist coaxial cable, which comprises a copper core, an inner shielding layer fixedly sleeved outside the copper core, an insulating layer fixedly sleeved outside the inner shielding layer, an outer shielding layer fixedly sleeved outside the insulating layer, a protective layer fixedly sleeved outside the outer shielding layer, a fixed sleeve fixedly sleeved on one side of the protective layer, a connector fixedly sleeved outside the fixed sleeve, an annular clamping groove formed in the middle of the fixed sleeve, an arc-shaped inclined block clamped in the annular clamping groove, four arc-shaped inclined blocks, four arc-shaped inclined blocks in contact with each other, four arc-shaped inclined blocks respectively fixedly connected with an extension rod, four extension rods respectively fixedly sleeved with a ring-shaped spring, an annular sliding groove formed in the middle of the connector inner cavity, and another end of the four extension rods respectively penetrating and extending into the inner cavity of the annular sliding groove and respectively fixedly connected with a sliding block.

[0004] In the prior art including the above patent, part of the cable is often touched during installation and use, or the torsional potential energy of the cable itself is not completely released, which causes the cable and its connector to easily rotate relative to each other, the cable to twist, and the connector to be easily rotated with the torsional force applied by the cable, causing the protective layer of the cable to be damaged, and even causing the cable and the connector to be separated, affecting the normal work of the cable. SUMMARY

[0005] The present application aims to provide a high-performance anti-twist power cable and a MPP protection assembly thereof, which solves the above problems.

[0006] In order to achieve the above-mentioned purpose, the present application provides a high-performance anti-twist power cable, which comprises an inner layer and an outer layer, and an anti-twist layer located between the inner layer and the outer layer, the anti-twist layer comprising a first anti-twist strip and a second anti-twist strip wound on the outer side of the inner layer, the spiral direction of the first anti-twist strip being opposite to the spiral direction of the second anti-twist strip, and the connection between the first anti-twist strip and the second anti-twist strip being detachably connected.

[0007] As preferred, a detachable connector is arranged at the joint near the cable end, the connector comprising a first mounting block and a second mounting block fixedly mounted on the first anti-twist strip and the second anti-twist strip respectively, and the second mounting block is provided with an insertion block extending into the first mounting block.

[0008] As preferred, the first mounting block is provided with a plurality of first lamellas stacked to form a sliding groove matched with the insertion block.

[0009] As preferred, the insertion block comprises a mounting strip fixedly mounted on the second mounting block and a plurality of second lamellas in the shape of "N" connecting the end of the mounting strip and the second mounting block.

[0010] As preferred, the first mounting block and the second mounting block are both provided with a connecting block, and the connector further comprises a support block for connecting the two connecting blocks.

[0011] As preferred, the connecting block is specifically a plurality of fourth lamellas stacked in the shape of "Ω".

[0012] As preferred, the inside of the support block is provided with a clamping portion stacked by a plurality of third lamellas and matched with the connecting block.

[0013] As preferred, the inside of the support block is provided with an arc-shaped guide piece matched with the side wall of the two connecting blocks.

[0014] As preferred, it further comprises a sealing cover wrapping the connector, and the top of the sealing cover is a foldable portion.

[0015] A MPP protection assembly of a high-performance anti-twist power cable, based on the high-performance anti-twist power cable in the above-mentioned scheme, further comprising a MPP tube covering the outside of the cable.

[0016] In the above-mentioned technical scheme, the high-performance anti-twist power cable and the MPP protection assembly thereof provided by the present application have the following beneficial effects: the outer layer and the inner layer are tightly connected to fix the anti-twist layer inside the cable, and the first anti-twist strip and the second anti-twist strip wound on the inner layer and having opposite spiral directions are used to limit the cable, and the detachable connection at the joint of the first anti-twist strip and the second anti-twist strip connects them together, and the first anti-twist strip and the second anti-twist strip are staggered to form a net-like structure, no matter the cable is twisted clockwise or counterclockwise, the anti-twist strips can provide support force, and the anti-twist performance of the cable is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0018] Figure 1 The overall structure schematic diagram provided for the embodiments of the present application;

[0019] Figure 2 The internal structure schematic diagram of the outer layer provided for the embodiments of the present application;

[0020] Figure 3 The Figure 2 The enlarged view of A in FIG. 1;

[0021] Figure 4 The structure schematic diagram of the sealing cover provided for the embodiments of the present application;

[0022] Figure 5 The structure schematic diagram of the anti-twist layer provided for the embodiments of the present application;

[0023] Figure 6 The structure schematic diagram of the connecting piece provided for the embodiments of the present application;

[0024] Figure 7 The structure schematic diagram of the first mounting block provided for the embodiments of the present application;

[0025] Figure 8 The Figure 7 The enlarged view of B in FIG. 1;

[0026] Figure 9 The explosion structure schematic diagram provided for the embodiments of the present application;

[0027] Figure 10 The structure schematic diagram of the connecting block provided for the embodiments of the present application;

[0028] Figure 11 The bottom structure schematic diagram of the supporting block provided for the embodiments of the present application;

[0029] Figure 12 The internal structure schematic diagram of the supporting block provided for the embodiments of the present application;

[0030] Figure 13 The structure schematic diagram of the third sheet layer provided for the embodiments of the present application;

[0031] Figure 14 The structure schematic diagram of the guiding sheet provided for the embodiments of the present application.

[0032] Explanation of reference signs:

[0033] 1, anti-twist layer; 11, first anti-twist strip; 111, first mounting block; 112, first sheet layer; 113, connecting block; 114, fourth sheet layer; 12, second anti-twist strip; 121, second mounting block; 122, second sheet layer; 123, mounting strip; 13, supporting block; 131, guide sheet; 132, clamping portion; 133, third sheet layer; 14, sealing cover; 141, shielding portion; 142, connecting portion; 2, inner layer; 3, outer layer; 31, grommet. DETAILED DESCRIPTION

[0034] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0035] Example one

[0036] As shown in the drawings, a high-performance anti-twist power cable includes an inner layer 2 and an outer layer 3, and an anti-twist layer 1 located between the inner layer 2 and the outer layer 3, the anti-twist layer 1 includes a first anti-twist strip 11 and a second anti-twist strip 12 wound on the outer side of the inner layer 2, the spiral direction of the first anti-twist strip 11 and the spiral direction of the second anti-twist strip 12 are opposite, and the connection between the first anti-twist strip 11 and the second anti-twist strip 12 is detachably connected. Figures 1-14 Specifically, the cable is composed of the inner layer 2 and the outer layer 3, and the first anti-twist strip 11 and the second anti-twist strip 12 are provided with recesses, and the recesses of the first anti-twist strip 11 and the recesses of the second anti-twist strip 12 are clamped.

[0037] Further, the outer layer 3 in the above embodiment is specifically an insulating, wear-resistant and heat-insulating rubber layer.

[0038] In the above technical solution, the outer layer 3 is tightly connected with the inner layer 2 to fix the anti-twist layer 1 inside the cable, and the first anti-twist strip 11 and the second anti-twist strip 12 wound on the inner layer 2 and having opposite spiral directions are used to limit the cable, and the detachable connection at the connection between the first anti-twist strip 11 and the second anti-twist strip 12, the two are connected together, the first anti-twist strip 11 and the second anti-twist strip 12 are staggered to form a mesh structure, no matter the cable is twisted clockwise or counterclockwise, the anti-twist strip provides support force, and the anti-twist performance of the cable is improved.

[0039] As a further provided embodiment of the present application, a detachable connecting piece is provided at the connection near the end of the cable, the connecting piece includes a first mounting block 111 and a second mounting block 121 fixedly mounted on the first anti-twist strip 11 and the second anti-twist strip 12 respectively, and the second mounting block 121 is provided with an insertion block extending into the first mounting block 111.

[0040]

[0041] ​Specifically, no connectors are provided at the other connection points. The first anti-twist strip 11 and the second anti-twist strip 12 can move relative to each other under the restriction of the snap-fit ​​notch, which facilitates the coiling of the cable during transportation.

[0042] Furthermore, the connector is only installed near the connection point of the cable end. During installation, the cable joint is close to the connection point and the cable is fixed to the base by the cable fixing clamp (existing technology, not described in detail). The connector fixes the first anti-twist strip 11 and the second anti-twist strip 12 together at this position, which can prevent the cable twist from being transmitted to the cable joint and protect the cable joint. The plug on the second mounting block 121 can temporarily slide relative to the first mounting block 111 to facilitate the coiling of the cable.

[0043] As a further embodiment of the present invention, the first mounting block 111 is provided with a sliding groove formed by stacking a plurality of first layers 112 to fit the insert block. The insert block includes a mounting strip 123 fixedly mounted on the second mounting block 121 and a plurality of second layers 122 in an "N" shape connecting the ends of the mounting strip 123 to the second mounting block 121.

[0044] Specifically, the first layer 112 fits into the second layer 122, and the second layer 122 includes an upper horizontal portion and a lower "N"-shaped portion (such as...). Figure 8 (As shown).

[0045] Furthermore, when transportation is required, the inserts on the second mounting block 121 can move along the grooves formed by the stacking of multiple first layers 112, allowing the first anti-torsion strip 11 and the second anti-torsion strip 12 to move relative to each other, and the second mounting block 121 can also move horizontally relative to the first mounting block 111 (to... Figure 8 As shown in the figure (left and right are horizontal directions), the second mounting block 121 moves away from the first mounting block 111. The multiple second layers 122 that make up the plug are pushed and separated by the first layer 112. The second layers 122 are also deformed, and the part that blocks the plug is brought to the outside of the first mounting block 111. The distance between the first mounting block 111 and the second mounting block 121 increases, and the angle at which the cable can be bent also increases, which facilitates the coiling and transportation of the cable.

[0046] Furthermore, in the above embodiments, the first layer 112 and the second layer 122 are both copper elastic sheets, which can deform and adapt themselves when the first mounting block 111 and the second mounting block 121 are far apart, and restore their shape when the first mounting block 111 and the second mounting block 121 are close together, so as to fix the first mounting block 111 and the second mounting block 121 together.

[0047] As another embodiment of the present invention, both the first mounting block 111 and the second mounting block 121 are provided with connecting blocks 113, and the connector also includes a support block 13 for connecting the two connecting blocks 113.

[0048] Specifically, during installation, the cable is straightened and fixed to the base using cable clamps. The clamps press against the support block 13, causing the support block 13 to move closer to the first mounting block 111 and the second mounting block 121, pushing them together until they are aligned. At this point, the support block 13 secures the first mounting block 111 and the second mounting block 121 together, as well as the first anti-twist strip 11 and the second anti-twist strip 12. Simultaneously, the support block 13, the first mounting block 111, and the second mounting block 121 encroach on the space of the outer layer 3. This part of the outer layer 3 is thinner and more flexible, allowing the clamps to press against the support block 13 and embed into the outer layer 3 of the cable, thereby firmly fixing the cable to the base.

[0049] As another embodiment of the present invention, the connecting block 113 is specifically formed by stacking multiple "Ω"-shaped fourth layers 114, and the support block 13 is provided with a locking part 132 that is formed by stacking multiple third layers 133 and adapted to the connecting block 113. The support block 13 is provided with an arc-shaped guide piece 131 that is adapted to the sidewalls of the two connecting blocks 113.

[0050] Specifically, the third layer 133 is also Ω-shaped, and both ends are provided with vertical sections (such as...). Figure 13 As shown, an arc-shaped ramp is provided on the side wall of the connecting block 113.

[0051] Furthermore, as the support block 13 approaches the first mounting block 111 and the second mounting block 121, the arc-shaped ramp at the bottom of the third layer 133 moves along the arc surface at the top of the connecting block 113, pushing the two connecting blocks 113 directly onto the locking part 132 on the support block 13. The third layer 133 on the support block 13 moves closer to the connecting block 113 composed of the fourth layer 114, and the connecting block 113 moves into the locking part 132 inside the support block 13. At the same time, the arc-shaped ramp on the side wall of the connecting block 113 contacts the guide piece 131 in the locking part 132. The guide piece 131 guides the connecting block 113 to move towards the middle of the locking part 132, thereby causing the two connecting blocks 113 to move closer together. The fourth layer 114 is locked in the recess of the fourth layer 114, the first mounting block 111 and the second mounting block 121 are fixed, and the first anti-torsion strip 11 and the second anti-torsion strip 12 are fixed together.

[0052] Furthermore, in the above embodiments, the third layer 133 and the fourth layer 114 are both copper elastic sheets.

[0053] As another embodiment of the present invention, it also includes a sealing cover 14 that encloses the connector, the top of the sealing cover 14 being a foldable portion.

[0054] Specifically, the sealing cover 14 includes a shielding part 141 and connecting parts 142 located on both sides of the shielding part 141. The top of the shielding part 141 is a foldable part. The edge of the connecting part 142 is provided with an elastic retaining ring, which fixes the edge of the connecting part 142 to the inner layer 2. The outer layer 3 is provided with a gasket 31 that has a certain elasticity and is facing the sealing cover 14. The gasket 31 is made of copper alloy and is provided with a marking point indicating the position of the support block 13.

[0055] Furthermore, during production, the first anti-torsion strip 11 and the second anti-torsion strip 12 are first wrapped around the inner layer 2, and the inserts on the first mounting block 111 and the second mounting block 121 are manually pushed to engage. Then, the support block 13 is installed onto the first mounting block 111 and the second mounting block 121. Next, the sealing cover 14 is placed on the inner layer 2, covering the connector. At this time, the first anti-torsion strip 11 and the second anti-torsion strip 12 move away from each other under their own elasticity, and pull the connector 113 away from the locking part 1 on the support block 13. 32. The connecting block 113 pushes the third layer 133 to move downwards towards the support block 13. The fourth layer 114 on the connecting block 113 is also compressed and shrinks, and its connection with the first mounting block 111 or the second mounting block 121 is stretched. The support block 13 is pushed upwards by the connecting block 113 to support the sealing cover 14. Then, extrusion can be performed to cover the inner layer 2 and the sealing cover 14 with the outer layer 3 material. Finally, the gasket 31 is installed on the outer layer 3, and the marking point on the gasket 31 is aligned with the support block 13.

[0056] During installation, the cable is placed in the clamp of the base with the marked point facing upwards. The clamp is tightened, and the clamp squeezes the pad ring 31 and the shielding part 141 of the sealing cover 14, forming a recess on the outer layer 3. The clamp is embedded in the outer layer 3, making the connection between the cable and the base more secure. At the same time, the clamp squeezes the support block 13, and the support block 13 moves closer to the first mounting block 111 and the second mounting block 121. The arc-shaped slope at the bottom of the third layer 133 moves along the arc surface at the top of the connecting block 113, pushing the two connecting blocks 113 directly onto the locking part 132 on the support block 13. The three layers 133 move closer to the connecting block 113 formed by the fourth layer 114. The connecting block 113 moves into the locking part 132 inside the support block 13. At the same time, the arc-shaped slope on the side wall of the connecting block 113 contacts the guide piece 131 in the locking part 132. The guide piece 131 guides the connecting block 113 to move towards the middle of the locking part 132, thereby causing the two connecting blocks 113 to move closer together. The fourth layer 114 is locked in the recess of the fourth layer 114. The first mounting block 111 and the second mounting block 121 are fixed together. The first anti-twist strip 11 and the second anti-twist strip 12 are fixed together.

[0057] Furthermore, the sealing cover 14 is specifically made of flexible polyvinyl chloride material.

[0058] Example 2

[0059] An MPP protection assembly for a high-performance anti-twist power cable, based on the high-performance anti-twist power cable and its MPP protection assembly in Embodiment 1 above, further includes an MPP tube covering the outside of the cable.

[0060] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-performance anti-twist power cable, characterized in that, It includes an inner layer and an outer layer, and an anti-twist layer located between the inner layer and the outer layer. The anti-twist layer includes a first anti-twist strip and a second anti-twist strip wrapped around the outside of the inner layer. The spiral direction of the first anti-twist strip is opposite to that of the second anti-twist strip, and the connection between the first anti-twist strip and the second anti-twist strip is detachable. A detachable connector is provided near the connection point of the cable end. The connector includes a first mounting block and a second mounting block that are respectively fixedly installed on the first anti-twist strip and the second anti-twist strip. An insert extending into the first mounting block is provided on the second mounting block. The first mounting block is provided with multiple sliding grooves formed by stacking first layers to fit the insertion block; The insert includes a mounting strip fixedly mounted on the second mounting block and a plurality of "N"-shaped second layers connecting the ends of the mounting strip to the second mounting block.

2. The high-performance anti-twist power cable according to claim 1, characterized in that, Both the first mounting block and the second mounting block are provided with connecting blocks, and the connector further includes a support block for connecting the two connecting blocks.

3. A high-performance anti-twist power cable according to claim 2, characterized in that, The connecting block is specifically composed of multiple "Ω"-shaped fourth layers stacked together.

4. A high-performance anti-twist power cable according to claim 2, characterized in that, The support block has a locking part inside that is composed of multiple stacked third layers and is adapted to the connecting block.

5. A high-performance anti-twist power cable according to claim 2, characterized in that, The support block has an arc-shaped guide plate inside that fits the sidewalls of the two connecting blocks.

6. A high-performance anti-twist power cable according to claim 1, characterized in that, It also includes a sealing cover that encloses the connector, the top of which is foldable.

7. An MPP protection assembly for a high-performance anti-twist power cable, based on the high-performance anti-twist power cable according to any one of claims 1-6, characterized in that, It also includes the MPP pipe that covers the outside of the cable.

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