Highly flexible and torsion-resistant drag chain cable

Abstract

The utility model discloses a high soft twist -resistant drag chain cable, including cable core, the outside of cable core is wrapped with filling layer, the outside of filling layer is wrapped with insulating anti -breakdown sheath, the outside of insulating anti -breakdown sheath is wrapped with armoured shielded sheath, the outside of armoured shielded sheath is wrapped with anticorrosive sheath, the outside of anticorrosive sheath is wrapped with protection cover, be equipped with flexible protection strip between protection cover and anticorrosive sheath, the flexible protection strip is in spiral state and is wound on the outer surface of anticorrosive sheath, there is gap between the spiral each part of flexible protection strip, the width of gap is half of flexible protection strip width. The utility model discloses a flexible protection strip with good elastic expansion performance through spiral winding, and when bending, due to the existence of gap in the middle, guarantee that flexible protection strip each part will not extrude each other, thereby avoid that flexible protection strip is damaged.

Description

Technical Field

[0001] This utility model relates to the field of drag chain cable technology, specifically a highly flexible and torsion-resistant drag chain cable. Background Technology

[0002] Drag chain cables are highly flexible special cables that can move back and forth with a drag chain without being easily worn. They are also commonly known as drag cables or tank chain cables. In situations where equipment units need to move back and forth, in order to prevent cables from getting tangled, worn, pulled out, snagged, or scattered, cables are often placed in cable drag chains to protect them, and the cables can also move back and forth with the drag chain.

[0003] Drag chain cables are repeatedly bent during use. High-intensity bending can cause cracks or damage to the outer sheath of the drag chain cable, thus affecting the safety of the drag chain cable. Therefore, it does not meet the existing requirements. To address this, we have proposed a highly flexible and torsion-resistant drag chain cable. Utility Model Content

[0004] The purpose of this utility model is to provide a highly flexible and torsion-resistant drag chain cable to solve the problem mentioned in the background art that drag chain cables are repeatedly bent during use, and the high-intensity bending can cause cracks or damage to the outer sheath of the drag chain cable due to bending, thereby affecting the safety of drag chain cable use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-flexibility, torsion-resistant drag chain cable, comprising a cable core, a filling layer wrapped around the outside of the cable core, an insulating and anti-breakdown sheath wrapped around the outside of the filling layer, an armored shielding sheath wrapped around the outside of the insulating and anti-breakdown sheath, an anti-corrosion sheath wrapped around the outside of the armored shielding sheath, a protective outer sheath wrapped around the outside of the anti-corrosion sheath, and a flexible protective strip provided between the protective outer sheath and the anti-corrosion sheath. The flexible protective strip is spirally wound around the outer surface of the anti-corrosion sheath, and the spacing between two adjacent turns of the spiral portion of the flexible protective strip is half the width of the flexible protective strip.

[0006] Preferably, the flexible protective strip is wrapped with a layer of polymer composite film, which is a polyimide substrate film.

[0007] Preferably, the interior of the anti-corrosion sleeve is provided with multiple support strips and buffer strips, which are arranged in a ring array around the axis of the anti-corrosion sleeve.

[0008] Preferably, the support strip and the buffer strip are spaced apart from each other, and the buffer strip is made of silicone, while the support strip is made of spring steel.

[0009] Preferably, the support strip is wavy and the thickness of the support strip is one-third of the radius of the curved portion.

[0010] Preferably, the anti-corrosion sleeve includes an inner tube and an outer tube. The inner tube and the outer tube are injection molded in two stages. The support strip and the buffer pad are attached to the outer surface of the inner tube after the inner tube is injection molded. The outer tube wraps the support strip, the buffer pad and the inner tube.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The flexible protective strip of this utility model has excellent elasticity and extensibility through spiral winding. When bending, the gap in the middle ensures that the parts of the flexible protective strip will not squeeze each other, providing an elastic buffer zone for the bending of the protective jacket, thereby avoiding damage or breakage of the protective jacket due to high-intensity bending. 2. This utility model protects the flexible protective strip by wrapping a layer of polymer composite film around its outer side, thus preventing gaps in the flexible protective strip during the injection molding process of the protective outer jacket, thereby preventing the gaps in the flexible protective strip from being blocked and affecting its elasticity, stretching and bending resistance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the flexible protective strip of this utility model; Figure 3 This is a schematic diagram of the structure of the anti-corrosion sheath of this utility model; Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle.

[0013] In the diagram: 1. Protective outer jacket; 2. Corrosion-resistant sheath; 3. Armored shielding sheath; 4. Insulating and anti-breakdown sheath; 5. Filler layer; 6. Cable core; 7. Flexible protective strip; 8. Polymer composite film; 9. Support strip; 10. Buffer pad strip. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] like Figures 1 to 4As shown, a high-flexibility torsion-resistant drag chain cable includes a cable core 6, a filler layer 5 wrapped around the outside of the cable core 6, an insulating and anti-breakdown sheath 4 wrapped around the outside of the filler layer 5, an armored shielding sheath 3 wrapped around the outside of the insulating and anti-breakdown sheath 4, an anti-corrosion sheath 2 wrapped around the outside of the armored shielding sheath 3, and a protective outer sheath 1 wrapped around the outside of the anti-corrosion sheath 2. A flexible protective strip 7 is provided between the protective outer sheath 1 and the anti-corrosion sheath 2. The flexible protective strip 7 is spirally wound around the outer surface of the anti-corrosion sheath 2. The spacing between two adjacent turns of the spiral portion of the flexible protective strip 7 is half the width of the flexible protective strip 7. The spirally wound flexible protective strip 7 has good elasticity and extensibility. When bent, the gap in the middle ensures that the parts of the flexible protective strip 7 will not squeeze each other, thereby avoiding damage to the flexible protective strip 7.

[0016] The flexible protective strip 7 is wrapped with a layer of polymer composite film 8. This polymer composite film 8 is a polyimide substrate film with excellent high temperature resistance, which prevents the protective jacket 1 from being damaged by heat during the injection molding process. The above technical solution is adopted.

[0017] The anti-corrosion sheath 2 has multiple support bars 9 and buffer pads 10 inside. The support bars 9 and buffer pads 10 are arranged in a ring array around the axis of the anti-corrosion sheath 2. The support bars 9 and buffer pads 10 are spaced apart from each other. The buffer pads 10 are made of silicone, while the support bars 9 are made of spring steel. The support bars 9 and buffer pads 10 provide support and buffering from inside the anti-corrosion sheath 2, thereby improving the overall compressive strength of the drag chain cable.

[0018] The support bar 9 is wavy and curved. The thickness of the support bar 9 is one-third of the radius of the curved part. When the wavy support bar 9 is compressed, it can elongate along the length direction, converting external pressure into elastic potential energy, thereby absorbing and offsetting external pressure.

[0019] The anti-corrosion sleeve 2 includes an inner tube and an outer tube. The inner tube and the outer tube are injection molded in two stages. The support strip 9 and the buffer pad strip 10 are attached to the outer surface of the inner tube after the inner tube is injection molded. The outer tube wraps the support strip 9, the buffer pad strip 10 and the inner tube.

[0020] When using drag chain cables to power equipment or transmit data, a protective shell is added to the outside of the cable. Then, the drag chain cable is connected to the equipment. After the equipment is started, the drag chain cable repeatedly bends along its length as the equipment runs. During the bending process, the flexible protective strip 7 inside the protective jacket 1 bends and deforms along with the drag chain cable. Since the flexible protective strip 7 is spirally wound and there are gaps between its parts, the spiral part of the flexible protective strip 7 moves along the axis of the drag chain cable. The gaps in the flexible protective strip 7 prevent the spiral parts of the flexible protective strip 7 from contacting and squeezing each other, thus increasing the buffer zone for the bending of the protective jacket 1. At the same time, the support strip 9, due to its wavy shape, elastically deforms along its length as the drag chain cable bends, thereby improving the high flexibility and torsional resistance of the drag chain cable and effectively offsetting the pressure when the drag chain cable bends.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A highly flexible and torsion-resistant drag chain cable, comprising a cable core (6), characterized in that: The outer side of the cable core (6) is wrapped with a filling layer (5), the outer side of the filling layer (5) is wrapped with an insulating anti-breakdown sheath (4), the outer side of the insulating anti-breakdown sheath (4) is wrapped with an armored shielding sheath (3), the outer side of the armored shielding sheath (3) is wrapped with an anti-corrosion sheath (2), the outer side of the anti-corrosion sheath (2) is wrapped with a protective outer sleeve (1), and a flexible protective strip (7) is provided between the protective outer sleeve (1) and the anti-corrosion sheath (2). The flexible protective strip (7) is spirally wound around the outer surface of the anti-corrosion sheath (2). The spacing between two adjacent turns of the spiral portion of the flexible protective strip (7) is half the width of the flexible protective strip (7).

2. The high-flexibility, torsion-resistant drag chain cable according to claim 1, characterized in that: The flexible protective strip (7) is wrapped with a polymer composite film (8) on the outside, which is a polyimide substrate film.

3. The high-flexibility, torsion-resistant drag chain cable according to claim 1, characterized in that: The interior of the anti-corrosion sleeve (2) is provided with multiple support strips (9) and buffer strips (10), which are arranged in a ring array around the axis of the anti-corrosion sleeve (2).

4. The high-flexibility, torsion-resistant drag chain cable according to claim 3, characterized in that: The support strip (9) and the buffer strip (10) are distributed at intervals, and the buffer strip (10) is made of silicone, while the support strip (9) is made of spring steel.

5. A highly flexible and torsion-resistant drag chain cable according to claim 4, characterized in that: The support bar (9) is wavy and the thickness of the support bar (9) is one-third of the radius of the curved part.

6. A high-flexibility, torsion-resistant drag chain cable according to claim 5, characterized in that: The anti-corrosion sleeve (2) includes an inner tube and an outer tube. The inner tube and the outer tube are divided into two injection molded support strips (9) and buffer pads (10). After the inner tube is injection molded, the support strips (9), buffer pads (10) and the inner tube are attached to the outer surface of the inner tube. The outer tube wraps the support strips (9), buffer pads (10) and the inner tube.

Images