Protective control cable

Abstract

The utility model discloses a protection type control cable, comprising an insulation sheath, the inner side of the insulation sheath is provided with a corrosion-resistant sheath, the inner side of the corrosion-resistant sheath is provided with a plurality of voltage-resistant protection sleeves for linear lightning elimination along the length direction of the corrosion-resistant sheath, and a rubber sleeve is fixed between every two adjacent voltage-resistant protection sleeves. An armored shielding sleeve is inserted into the inner side of the voltage-withstanding protection sleeve in a penetrating mode, and a cable inner core filling protection sleeve is fixed in the armored shielding sleeve. The cable has the advantages that the pressure-resistant protective sleeve formed by the elastic pressure-resistant gaskets and the elastic extension sheets which are distributed in a staggered manner and distributed in a circular array manner around the axis of the cable is used for carrying out pressure-resistant protection on the inner core of the cable, and when the cable is pressed, external pressure enables the elastic pressure-resistant gaskets and the elastic extension sheets to deform; and external pressure is offset by the deformed elastic compression-resistant gasket and the elastic extension sheet, so that the cable inner core is prevented from being damaged or broken due to the external pressure.

Description

TECHNICAL FIELD

[0001] The utility model relates to control cable technical field, especially a kind of protective control cable. BACKGROUND

[0002] Cable is usually by several or several groups of wire (at least two in each group) stranded into rope-like cable, each group of wire is mutually insulated, and is twisted around a center, the whole outside is covered with highly insulated covering layer, cable has the characteristics of internal power supply, external insulation, control cable belongs to cable, control cable is suitable for industrial and mining enterprises, energy and transportation department, supply AC voltage 450 / 750 volts below control, protection line and other occasions such as use PVC insulation, PVC sheath control cable.

[0003] However, in the prior art, the control cable relies on the insulation layer and the armored protection layer to protect the internal core of the cable, but the control cable has weak compression resistance, and when external pressure acts on the control cable, the internal core of the control cable will be bent, causing the internal core of the cable to be damaged or broken due to bending. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is that the control cable relies on the insulation layer and the armored protection layer to protect the internal core of the cable, but the control cable has weak compression resistance, and when external pressure acts on the control cable, the internal core of the control cable will be bent, causing the internal core of the cable to be damaged or broken due to bending.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0006] A protective control cable, comprising an insulating outer skin, the inner side of the insulating outer skin is provided with a corrosion-resistant sheath, the inner side of the corrosion-resistant sheath is provided with a plurality of pressure-resistant protective sleeves linearly arranged along the length direction thereof, a rubber sleeve is fixed between every two adjacent pressure-resistant protective sleeves, a armored shielding sleeve is inserted into the inner side of the pressure-resistant protective sleeve, a cable core filling protective sleeve is fixed in the inner part of the armored shielding sleeve, and a cable core is inserted into the inner part of the cable core filling protective sleeve.

[0007] Preferably, the thickness of the rubber sleeve is half of the thickness of the pressure-resistant protective sleeve, and the length and outer diameter of the rubber sleeve are consistent with the length and outer diameter of the pressure-resistant protective sleeve.

[0008] Preferably, the pressure-resistant protective sleeve comprises a rubber outer sleeve and a rubber inner sleeve, the end parts of the rubber outer sleeve and the rubber inner sleeve are bent by ninety degrees, and the bent end parts of the rubber outer sleeve and the rubber inner sleeve are attached to each other.

[0009] Preferably, a plurality of elastic pressure resisting pads and elastic extension pieces are arranged between the rubber outer sleeve and the rubber inner sleeve, the elastic pressure resisting pads and the elastic extension pieces are staggered, and the elastic pressure resisting pads and the elastic extension pieces are arranged in a circular array around the axis of the rubber outer sleeve and the rubber inner sleeve, the elastic pressure resisting pads are attached to the rubber inner sleeve, and the elastic extension pieces are in contact with the rubber outer sleeve.

[0010] Preferably, the elastic extension pieces are V-shapedly bent at two ends thereof towards the rubber inner sleeve, and the end positions of the elastic extension pieces are arcuately curved towards the rubber outer sleeve.

[0011] Preferably, the elastic pressure resisting pad comprises a contact piece, the two ends of the contact piece are fixed with bending pieces, the top end of the bending piece is fixed with a limiting guide piece, a limiting guide groove is arranged through the surface of the limiting guide piece, and the end of the elastic extension piece is inserted into the inner side of the limiting guide groove.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The elastic pressure resisting pads and the elastic extension pieces are staggered and arranged in a circular array around the axis of the cable, and the cable inner core is protected by the pressure resisting sleeve, when the cable is pressed, the external pressure makes the elastic pressure resisting pads and the elastic extension pieces deform, the external pressure is offset by the deformed elastic pressure resisting pads and the elastic extension pieces, and the cable inner core is prevented from being damaged or broken due to the external pressure. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a sectional view of the structure of the pressure resisting sleeve of the utility model;

[0016] Figure 3 It is Figure 2 It is an enlarged view of the structure at A in the middle;

[0017] Figure 4 It is a schematic diagram of the structure of the elastic pressure resisting pad of the utility model.

[0018] In the drawing: 1, insulating outer skin; 2, cable inner core filling protection sleeve; 3, armored shielding sleeve; 4, corrosion resisting sheath; 5, pressure resisting sleeve; 51, rubber outer sleeve; 52, rubber inner sleeve; 53, elastic pressure resisting pad; 531, contact piece; 532, bending piece; 533, limiting guide piece; 534, limiting guide groove; 54, elastic extension piece; 6, cable inner core. DETAILED DESCRIPTION

[0019] The specific embodiments of the utility model will be further described below with reference to the drawings. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation on the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as there is no conflict.

[0020] As Figure 1 Indicated, a kind of protective control cable, the inside of insulating outer skin 1 is equipped with corrosion-resistant sheath 4, the inside of corrosion-resistant sheath 4 is equipped with multiple pressure-resistant protective sleeve 5 linearly arranged along its length direction, rubber sleeve is fixed between every two adjacent pressure-resistant protective sleeve 5, pressure-resistant protective sleeve 5 is inserted with armored shield 3 in the inside, armored shield 3 is fixed with cable inner core filling protection sleeve 2 in the inside, cable inner core 6 is inserted in the inside of cable inner core filling protection sleeve 2, utilize pressure-resistant protective sleeve 5 between corrosion-resistant sheath 4, armored shield 3 carry out elastic buffer, reduce the influence of external pressure to cable inner core 6, avoid bending and substantially damage or breakage of cable inner core 6 because of external pressure.

[0021] The thickness of rubber sleeve is one half of the thickness of pressure-resistant protective sleeve 5, the length size and outer diameter of rubber sleeve are consistent with the length size and outer diameter of pressure-resistant protective sleeve 5, utilize rubber sleeve to connect multiple independent pressure-resistant protective sleeve 5 with each other, so that adjacent pressure-resistant protective sleeve 5 can move freely, improve the bending performance of control cable.

[0022] As a preferred technical solution of the embodiment, as shown in Figure 2 And Figure 3 Indicated, pressure-resistant protective sleeve 5 includes rubber outer sleeve 51 and rubber inner sleeve 52, the end of rubber outer sleeve 51 and rubber inner sleeve 52 is bent by ninety degrees, and the bent end of rubber outer sleeve 51 and rubber inner sleeve 52 is mutually attached, a plurality of elastic pressure-resistant gaskets 53 and elastic extension pieces 54 are arranged between rubber outer sleeve 51 and rubber inner sleeve 52, elastic pressure-resistant gaskets 53 and elastic extension pieces 54 are distributed alternately, and elastic pressure-resistant gaskets 53 and elastic extension pieces 54 are distributed in circular array around the axis of rubber outer sleeve 51 and rubber inner sleeve 52, elastic pressure-resistant gaskets 53 are attached to rubber inner sleeve 52, elastic extension pieces 54 are in contact with rubber outer sleeve 51, utilize elastic pressure-resistant gaskets 53 and elastic extension pieces 54 to support rubber outer sleeve 51 and rubber inner sleeve 52, so that rubber outer sleeve 51 and rubber inner sleeve 52 are spaced apart by a certain distance, and elastic pressure-resistant gaskets 53 and elastic extension pieces 54 are made of elastic material, which can bend and deform under pressure and absorb and offset the pressure, improve the pressure resistance of pressure-resistant protective sleeve 5 and protect cable inner core 6.

[0023] In this embodiment, the two ends of the elastic extension sheet 54 are bent in a V-shape towards the inner rubber sleeve 52, and the end position of the elastic extension sheet 54 is bent in an arc shape towards the outer rubber sleeve 51.

[0024] As a preferred technical solution in this embodiment, such as Figure 4 As shown, the elastic compression pad 53 includes a contact piece 531, with a bent piece 532 fixed at both ends of the contact piece 531. A limiting guide piece 533 is fixed at the top of the bent piece 532, and a limiting guide groove 534 is provided through the surface of the limiting guide piece 533. The end of the elastic extension piece 54 is inserted into the inner side of the limiting guide groove 534. The limiting guide groove 534 restricts and guides the end of the elastic extension piece 54, ensuring that the elastic extension piece 54 and the elastic compression pad 53 will not easily separate after being connected.

[0025] Working principle: When using the control cable, when external pressure is applied to the outer surface of the insulation sheath 1, the compressed portion of the insulation sheath 1 indents inward towards the control cable. At the same time, the corrosion-resistant sheath 4 indents and squeezes the pressure-resistant protective sheath 5. The pressure first acts on the rubber outer sheath 51 and is transmitted to the elastic extension piece 54 corresponding to the compressed position of the control cable. At this time, the elastic extension piece 54 moves towards the rubber inner sheath 52. Since the two ends of the elastic extension piece 54 are in contact with the two adjacent elastic pressure-resistant pads 53, the ends of the elastic extension piece 54 slide on the outer surface of the bending piece 532 and approach the end of the limiting guide piece 533. The elastic extension piece 54 deforms and the distance between the two ends increases. When the elastic extension piece 54 deforms, it squeezes the bending piece 532 through its ends, causing the bending piece to... 532 bends and approaches the contact piece 531 until the end of the elastic extension piece 54 contacts the end of the limiting guide piece 533. During this process, the elastic pressure-resistant pads 53 on both sides of the elastic extension piece 54 will slide against the surface of the rubber inner sleeve 52 due to the compression of the elastic extension piece 54. The pressure of the elastic pressure-resistant pads 53 on the armored shield 3 and the cable core filling protective sleeve 2 is reduced. After the external pressure disappears, the bending piece 532 returns to its original shape and drives the end of the elastic extension piece 54 to reset, so that the elastic extension piece 54 returns to its original shape. The deformation of the elastic pressure-resistant pads 53 and the elastic extension piece 54 after being compressed cancels and absorbs the external pressure, reduces the impact of the external pressure on the cable core 6 inside the control cable, and avoids the cable core 6 from bending and being damaged or broken due to external pressure.

[0026] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A protective control cable, comprising an insulating sheath (1), characterized in that: The inner side of the insulating outer sheath (1) is provided with a corrosion-resistant sheath (4). The inner side of the corrosion-resistant sheath (4) is provided with a plurality of voltage-resistant protective sleeves (5) that are linearly arranged along its length direction. A rubber sleeve is fixed between every two adjacent voltage-resistant protective sleeves (5). An armored shielding sleeve (3) is inserted inside the voltage-resistant protective sleeve (5). A cable inner core filling protective sleeve (2) is fixed inside the armored shielding sleeve (3). A cable inner core (6) is inserted inside the cable inner core filling protective sleeve (2).

2. The protective control cable according to claim 1, characterized in that: The thickness of the rubber sleeve is half the thickness of the pressure-resistant protective sleeve (5), and the length and outer diameter of the rubber sleeve are consistent with the length and outer diameter of the pressure-resistant protective sleeve (5).

3. A protective control cable according to claim 2, characterized in that: The pressure-resistant protective sleeve (5) includes a rubber outer sleeve (51) and a rubber inner sleeve (52). The ends of the rubber outer sleeve (51) and the rubber inner sleeve (52) are bent at ninety degrees, and the bent ends of the rubber outer sleeve (51) and the rubber inner sleeve (52) fit together.

4. A protective control cable according to claim 3, characterized in that: Multiple elastic pressure-resistant pads (53) and elastic extension pieces (54) are provided between the rubber outer sleeve (51) and the rubber inner sleeve (52). The elastic pressure-resistant pads (53) and elastic extension pieces (54) are staggered and arranged in a circular array around the axis of the rubber outer sleeve (51) and the rubber inner sleeve (52). The elastic pressure-resistant pads (53) fit the rubber inner sleeve (52), and the elastic extension pieces (54) are in contact with the rubber outer sleeve (51).

5. A protective control cable according to claim 4, characterized in that: The elastic extension piece (54) is bent in a V-shape at both ends toward the inner rubber sleeve (52), and the end of the elastic extension piece (54) is bent in an arc shape toward the outer rubber sleeve (51).

6. A protective control cable according to claim 5, characterized in that: The elastic pressure-resistant pad (53) includes a contact piece (531), and two ends of the contact piece (531) are fixed with bending pieces (532). The top end of the bending piece (532) is fixed with a limiting guide piece (533). The surface of the limiting guide piece (533) is provided with a limiting guide groove (534). The end of the elastic extension piece (54) is inserted into the inner side of the limiting guide groove (534).

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