Moistureproof and fireproof cable

Abstract

The utility model relates to the technical field of cables, in particular to a moisture-proof and fireproof cable. Comprising a cable body, the cable body comprises a fireproof layer, a separation frame is arranged on the inner side of the fireproof layer, a plurality of cavities are formed in the separation frame, wires are placed in the cavities, the space between the outer edges of the wires and the inner walls of the cavities is filled with a filling layer, an inner cavity is formed in the center of the separation frame, and the inner cavity is filled with a drying agent; protection heads are installed at the two ends of the cable body, each protection head comprises a connecting sleeve, an arc-shaped connecting plate is slidably connected into each connecting sleeve, a connecting semi-ring is fixed to one end of each connecting plate, each connecting semi-ring and the corresponding connecting plate form a connecting assembly, and the two connecting assemblies can be connected through an assembly. According to the utility model, after the wires are connected and the connecting assemblies are connected through the assembly, effective protection of wire joints can be realized, the situation of short circuit caused by extrusion damage of insulating materials at the joints can be avoided, and fireproof and moistureproof covering layers at the joints can be effectively protected.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a moisture-proof and fire-proof cable. Background Art

[0002] Cables are usually made of several or several groups of wires (at least two wires in each group) twisted together. Each group of wires is insulated from each other and often twisted around a central wire. The entire cable is covered with a highly insulating covering. The cable has the characteristics of being powered inside and insulated outside. Most existing cables have poor fire resistance and are prone to fire. In addition, they are easily affected by moisture during use, which affects the normal operation of the cable and easily brings safety hazards.

[0003] The patent document with application number CN202221852950.3 and titled "A Moisture-proof Fireproof Cable" discloses a cable with good moisture-proof and fire-proof performance. It includes several cable cores and protective sleeves; the protective sleeve is coated on the outside of the cable core; the protective sleeve includes two layers, namely, a sheath layer arranged on the outer layer and a fireproof isolation layer arranged on the inner layer, and there is also a moisture-proof layer of an annular structure between the sheath layer and the fireproof isolation layer; the moisture-proof layer is longitudinally coated on the inner wall of the sheath layer and is tightly bonded to the sheath layer. By providing multiple moisture-proof and moisture-proof structures and multi-layer fireproof isolation structures, multiple protection functions are realized, the comprehensive fire and moisture-proof performance of the cable is guaranteed, and the reliability of the cable is greatly improved.

[0004] After the moisture-proof and fireproof cable is connected, the joints of the moisture-proof and fireproof cable need to be treated with high-strength moisture-proof and fire-proof treatment. Generally, insulating tape, insulating sleeve or insulating sleeve will be used to insulate the joints to prevent current leakage or short circuit, and then fire-proof and moisture-proof coating will be applied to the insulating tape, insulating sleeve or insulating sleeve. However, the structural strength of the insulating tape, insulating sleeve or insulating sleeve and the fire-proof and moisture-proof coating is less than the protective layer of the cable. Therefore, the joints of the moisture-proof and fire-proof cable need to be protected after connection. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a moisture-proof and fire-proof cable which can effectively protect the cable joints.

[0006] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0007] A moisture-proof and fire-proof cable comprises a cable body, the cable body comprises a fireproof layer, a partition frame is arranged inside the fireproof layer, a plurality of cavities are evenly distributed on the inner circumference of the partition frame, wires are placed in the cavities, a filling layer is filled between the outer edge of the wire and the inner wall of the cavity, an inner cavity is opened in the center of the partition frame, and the inner cavity is filled with a desiccant; protective heads are installed at both ends of the cable body, the angle between the two protective heads in the circumferential direction of the cable body is 180 degrees, the protective head comprises a connecting sleeve, the connecting sleeve is fixedly connected to the fireproof layer of the cable body, an arc-shaped connecting plate is slidably connected in the connecting sleeve, one end of the connecting plate extends to the outside of the connecting sleeve, a connecting half ring is concentrically fixed on one end of the connecting plate outside the connecting sleeve, the connecting half ring and the connecting plate constitute a connecting component, and the two connecting components can be connected through a combination.

[0008] Specifically, the assembly includes fixed blocks fixed on both sides of the connecting plate, the fixed blocks are slidably set in the second sliding groove on the connecting sleeve, the fixed blocks are provided with hook grooves, hook claws are slidably set in the vertical direction on both sides of the connecting semi-ring, the hook claws correspond to the fixed blocks, the two hook claws are fixedly connected to the arc rod, the arc rod is slidably set in the arc groove on the connecting semi-ring, both ends of the connecting semi-ring are elastically slidably connected to the limiting parts, the limiting parts include a sliding rod, the sliding rod is slidably connected in the blind hole on the connecting semi-ring, the axial direction of the sliding rod is parallel to the axial direction of the connecting sleeve, a spring is fixed on the sliding rod, the spring is fixedly connected to the connecting semi-ring, and the sliding rod is tightly against the hook claw.

[0009] Specifically, the assembly includes ridges fixed on both sides of the connecting semi-ring, and the ridges are slidably arranged in the second sliding groove on the connecting sleeve. A clamping strip is fixed at both ends of one of the connecting semi-rings, and a groove is provided on the clamping strip. A clamping slot is provided at both ends of the other connecting semi-ring. The clamping strip corresponds to the clamping slot and can be clamped in the clamping slot. A blocking piece is provided on the ridge, and the blocking piece includes a vertical groove provided on the ridge, the vertical groove is connected with the clamping slot, a wedge block is slidably connected in the vertical groove, the upper end of the wedge block is connected to the groove top of the vertical groove by a compression spring, a pull rod is slidably arranged in the vertical groove, the pull rod is fixedly connected to the wedge block, and the pull rod extends to the outside of the vertical groove, and after the clamping strip is clamped into the clamping slot, the lower end of the wedge block can enter the groove.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. After the wires of the utility model are connected, the connection components are connected through the assembly, which can effectively protect the wire joints, avoid the insulation materials at the joints from being squeezed and damaged to cause short circuits, and effectively protect the fireproof and moisture-proof covering layers at the joints.

[0012] 2. After the connection components are connected through the assembly, the tensile performance of the cable body joint is increased, which can improve the safety of the cable body during operation.

[0013] 3. By filling the inner cavity in the center of the partition frame with desiccant, the water vapor that enters the fireproof layer can be effectively removed, ensuring the dryness of the inside of the cable body and having strong moisture-proof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of embodiment 1.

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the cable body.

[0016] Figure 3 It is a schematic diagram of the cooperation between the connecting plate and the connecting sleeve.

[0017] Figure 4 This is a schematic diagram of the second embodiment.

[0018] Figure 5 A cross-sectional view of a ridge.

[0019] Figure 6 for Figure 5 Magnified view of area A.

[0020] The names of the parts in the attached drawings are:

[0021] 1. Cable body; 2. Compression spring; 3. Connecting sleeve; 4. Connecting plate; 5. Slider; 6. First slide groove; 7. Second slide groove; 8. Fixed block; 9. Connecting half ring; 91. Clamp ring; 92. Inner ring; 93. Ring groove; 10. Connecting block; 11. Arc rod; 12. Hook; 13. Groove; 14. Wedge; 15. Pull rod; 16. Spring; 17. Slider; 18. Hook groove; 19. Fireproof layer; 20. Partition frame; 21. Conductor; 22. Desiccant; 23. Filling layer; 24. Card strip; 25. Card groove; 26. Vertical groove; 27. Raised ridge. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Embodiment 1:

[0024] Reference Figure 1-Figure 3 As shown, a moisture-proof and fire-proof cable includes a cable body 1, and the cable body 1 includes a fireproof layer 19. A partition frame 20 is arranged inside the fireproof layer 19. A plurality of cavities are evenly distributed on the inner circumference of the partition frame 20, and wires 21 are placed in each cavity. A filling layer 23 is filled between the outer edge of the wire 21 and the inner wall of the cavity. An inner cavity is opened in the center of the partition frame 20, and a desiccant 22 is filled in the inner cavity.

[0025] By filling the inner cavity at the center of the partition frame 20 with a desiccant 22, water vapor entering the fireproof layer 19 can be effectively removed, thereby ensuring that the inside of the cable body 1 is dry and has a strong moisture-proof performance.

[0026] Protective heads are installed at both ends of the cable body 1 , and the included angle between the two protective heads in the circumferential direction of the cable body 1 is 180 degrees.

[0027] The protective head includes a connecting sleeve 3, which is fixedly connected to the fireproof layer 19 of the cable body 1. An arc-shaped connecting plate 4 is slidably connected inside the connecting sleeve 3. Specifically, a slider 5 is fixed to the outer edge of the connecting plate 4, and a first slide groove 6 is provided on the connecting sleeve 3. The length direction of the first slide groove 6 is parallel to the axial direction of the connecting sleeve 3, and the slider 5 is slidably arranged in the first slide groove 6.

[0028] One end of the connecting plate 4 extends to the outside of the connecting sleeve 3, and a connecting half ring 9 is coaxially fixed on one end of the connecting plate 4 outside the connecting sleeve 3. The connecting half ring 9 and the connecting plate 4 constitute a connecting assembly, and the two connecting assemblies can be connected by a combination piece.

[0029] The assembly includes a fixing block 8 fixed on both sides of the connecting plate 4, and the fixing block 8 is slidably arranged in the second slide groove 7 on the connecting sleeve 3, and the length direction of the second slide groove 7 is parallel to the axial direction of the connecting sleeve 3. A hook groove 18 is provided on the fixing block 8, and hook claws 12 are slidably arranged in the vertical direction on both sides of the connecting half ring 9, and the hook claws 12 correspond to the fixing block 8.

[0030] Reference Figure 3 As shown, in this embodiment, the two hook claws 12 on the left are L-shaped, and the two hook grooves 18 on the right are L-shaped. The two hook claws 12 on the right are in an inverted L-shape, and the two hook grooves 18 on the left are in an inverted L-shape. During the connection of the two connecting plates 4, the two hook claws 12 on the left can be respectively engaged in the two hook grooves 18 on the right. And the two hook claws 12 on the right can be respectively engaged in the two hook grooves 18 on the left. During the process of the hook claw 12 entering the hook groove 18, under the blocking effect of the fixed block 8, the hook claw 12 will squeeze the slide bar 17 during the process of moving into the hook groove 18, and the slide bar 17 will squeeze the spring 16. When the hook claw 12 enters the hook groove 18, the spring 16 will restore the hook claw 12 through the slide bar 17, and then the hook claw 12 will be engaged in the hook groove 18.

[0031] The two hook claws 12 are fixedly connected to the arc rod 11, and the arc rod 11 is slidably arranged in the arc groove on the connecting half ring 9. A connecting block 10 is fixed on the arc rod 11.

[0032] Both ends of the connecting half ring 9 are elastically slidably connected to the limiter. The limiter includes a slide bar 17, which is slidably connected in the blind hole on the connecting half ring 9. The axial direction of the slide bar 17 is parallel to the axial direction of the connecting sleeve 3. A spring 16 is fixed on the slide bar 17, and the spring 16 is fixedly connected to the connecting half ring 9. The slide bar 17 is tightly against the hook 12.

[0033] An arc-shaped clamping ring 91 is concentrically fixed on the inner edge of the connecting half ring 9 , an inner ring 92 is concentrically fixed on the connecting sleeve 3 inside the connecting half ring 9 , and an annular groove 93 is formed on the outer edge of the inner ring 92 .

[0034] When two sections of cable bodies 1 need to be connected, the connecting plates 4 on the two protective heads are arranged in an up-down staggered manner. Then the conductors 21 of the two sections of cable bodies 1 are connected and subjected to insulation and fireproof and moisture-proof coating spraying treatment.

[0035] Pull the connecting plate 4 out of the connecting sleeve 3. When the clamping ring 91 of one of the protective heads corresponds to the annular groove 93 of the inner ring 92 of the other protective head, the hook 12 on one of the connecting half rings 9 corresponds to the fixing block 8 on the other connecting half ring 9. Then, the two connecting plates 4 are brought close to each other and form a cylinder, and the joint of the wire 21 is located in the cylinder. In the process of the two connecting plates 4 approaching each other and forming a cylinder, the hook 12 gradually enters the hook groove 18. At the same time, the clamping ring 91 of one of the protective heads enters the annular groove 93 of the inner ring 92 of the other protective head.

[0036] When the hook 12 enters the hook groove 18, under the blocking effect of the fixed block 8, the hook 12 drives the arc rod 11 and the connecting block 10 to move along the axial direction of the connecting sleeve 3, the hook 12 squeezes the slide bar 17, and the slide bar 17 squeezes the spring 16. When the hook portion of the hook 12 completely enters the hook groove 18, the hook 12 is restored under the elastic force of the spring 16. At this time, the hook 12 is clamped in the hook groove 18. The connection of the two sections of the cable body 1 is completed and has a good tensile resistance effect.

[0037] When the two connecting plates 4 need to be separated, the arc rod 11 is moved in the arc groove along the axial direction of the connecting sleeve 3 through the connecting block 10. The arc rod 11 can drive the hook claw 12 to squeeze the sliding rod 17. When the hook part of the hook claw 12 corresponds to the vertical part of the hook groove 18 as a whole, the two protective heads are misaligned up and down, and the hook claw 12 will withdraw from the hook groove 18 to separate the two connecting plates 4.

[0038] Embodiment 2:

[0039] The other features of this embodiment are the same as those of the first embodiment, except that:

[0040] Reference Figure 4-Figure 6As shown, the assembly includes ridges 27 fixed on both sides of the connecting half ring 9 , and the ridges 27 are slidably arranged in the second sliding grooves 7 on the connecting sleeve 3 .

[0041] A clamping strip 24 is fixed at both ends of one of the connecting half rings 9, and a groove 13 is provided on the clamping strip 24. A clamping groove 25 is provided at both ends of the other connecting half ring 9. The clamping strip 24 corresponds to the clamping groove 25, and the clamping strip 24 can be clamped in the clamping groove 25.

[0042] The convex ribs 27 are all provided with a blocking member. The blocking member includes a vertical groove 26 provided on the convex rib 27, and the vertical groove 26 is connected with the clamping groove 25. A wedge block 14 is slidably connected in the vertical groove 26, and the upper end of the wedge block 14 is connected to the groove top of the vertical groove 26 through a compression spring 2. A pull rod 15 is slidably provided in the vertical groove 26, and the pull rod 15 is fixedly connected with the wedge block 14, and the pull rod 15 extends to the outside of the vertical groove 26. After the clamping strip 24 is clamped into the clamping groove 25, the lower end of the wedge block 14 can enter the groove 13.

[0043] In this embodiment, when two sections of cable bodies 1 need to be connected, the connecting plates 4 on the two protective heads are arranged in an up-down staggered manner. Then the conductors 21 of the two sections of cable bodies 1 are connected and subjected to insulation and fireproof and moisture-proof coating spraying.

[0044] Make the clamping strip 24 correspond to the clamping groove 25 and pull the connecting plate 4 out of the connecting sleeve 3. In the process of pulling the connecting plate 4 out of the connecting sleeve 3, the clamping strip 24 is gradually inserted into the clamping groove 25 corresponding thereto. When the clamping strip 24 contacts the wedge block 14, the clamping strip 24 can make the wedge block 14 move upward and squeeze the compression spring 2. When the slider 5 contacts one end of the first slide groove 6 close to the connecting semi-ring 9, the wedge block 14 can enter the groove 13 under the elastic force of the compression spring 2. At this time, the two connecting plates 4 are connected. The two connecting plates 4 form a cylinder, and the joint of the conductor 21 is located in the cylinder. At this time, the two sections of the cable body 1 are connected and have a good tensile effect.

[0045] When the two connecting plates 4 need to be separated, the wedge block 14 is pulled by the pull rod 15 to move and squeeze the compression spring 2. When the wedge block 14 is withdrawn from the groove 13, the connecting plate 4 can move into the connecting sleeve 3 where it is located. When the clamping strip 24 is withdrawn from the clamping groove 25, the two connecting plates 4 are separated.

[0046] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0048] A person skilled in the art will appreciate that all or part of the steps in the above-mentioned embodiment method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A moisture-proof and fire-proof cable, comprising a cable body (1), characterized in that: The cable body (1) comprises a fireproof layer (19), a partition frame (20) is arranged inside the fireproof layer (19), a plurality of cavities are evenly distributed on the inner circumference of the partition frame (20), wires (21) are placed in the cavities, a filling layer (23) is filled between the outer edge of the wire (21) and the inner wall of the cavity, an inner cavity is opened at the center of the partition frame (20), and the inner cavity is filled with a desiccant (22); protective heads are installed at both ends of the cable body (1), and the two protective heads are arranged in a circumferential direction of the cable body (1). The upward angle is 180 degrees. The protective head comprises a connecting sleeve (3). The connecting sleeve (3) is fixedly connected to the fireproof layer (19) of the cable body (1). An arc-shaped connecting plate (4) is slidably connected inside the connecting sleeve (3). One end of the connecting plate (4) extends to the outside of the connecting sleeve (3). A connecting semi-ring (9) is coaxially fixed on one end of the connecting plate (4) outside the connecting sleeve (3). The connecting semi-ring (9) and the connecting plate (4) constitute a connecting assembly. The two connecting assemblies can be connected through a combination piece.

2. A moisture-proof and fire-proof cable according to claim 1, characterized in that: The assembly comprises a fixed block (8) fixed on both sides of the connecting plate (4), the fixed block (8) being slidably arranged in a second sliding groove (7) on the connecting sleeve (3), a hook groove (18) being provided on the fixed block (8), hook claws (12) being slidably arranged in the vertical direction on both sides of the connecting semi-ring (9), the hook claws (12) corresponding to the fixed block (8), the two hook claws (12) being fixedly connected to the arc rod (11), the arc rod (11) being slidably arranged in the arc groove on the connecting semi-ring (9), both ends of the connecting semi-ring (9) being elastically slidably connected to a limiting member, the limiting member comprising a sliding rod (17), the sliding rod (17) being slidably connected in a blind hole on the connecting semi-ring (9), the axial direction of the sliding rod (17) being parallel to the axial direction of the connecting sleeve (3), a spring (16) being fixedly arranged on the sliding rod (17), the spring (16) being fixedly connected to the connecting semi-ring (9), and the sliding rod (17) being tightly pressed against the hook claws (12).

3. A moisture-proof and fire-proof cable according to claim 2, characterized in that: The length direction of the second sliding groove (7) is parallel to the axial direction of the connecting sleeve (3), and a connecting block (10) is fixed on the arc rod (11).

4. A moisture-proof and fire-proof cable according to claim 2, characterized in that: An arc-shaped clamping ring (91) is coaxially fixed on the inner edge of the connecting half ring (9), an inner ring (92) is coaxially fixed on the connecting sleeve (3) inside the connecting half ring (9), and an annular groove (93) is provided on the outer edge of the inner ring (92).

5. A moisture-proof and fire-proof cable according to claim 1, characterized in that: The assembly comprises convex ridges (27) fixed on both sides of the connecting half ring (9), the convex ridges (27) are slidably arranged in the second sliding groove (7) on the connecting sleeve (3), one of the two ends of the connecting half ring (9) is fixed with a clamping strip (24), the clamping strip (24) is provided with a groove (13), and the other two ends of the connecting half ring (9) are provided with a clamping groove (25), the clamping strip (24) corresponds to the clamping groove (25), the clamping strip (24) can be clamped in the clamping groove (25), the convex ridges (27) are provided with a clamping stopper, and the clamping stopper The invention comprises a vertical groove (26) provided on a convex ridge (27), the vertical groove (26) being connected with a clamping groove (25), a wedge block (14) being slidably connected in the vertical groove (26), the upper end of the wedge block (14) being connected with the groove top of the vertical groove (26) through a compression spring (2), a pull rod (15) being slidably arranged in the vertical groove (26), the pull rod (15) being fixedly connected with the wedge block (14), the pull rod (15) extending to the outside of the vertical groove (26), and the lower end of the wedge block (14) being able to enter the groove (13) after the clamping strip (24) is clamped into the clamping groove (25).

6. A moisture-proof and fire-proof cable according to any one of claims 1 to 5, characterized in that: A slider (5) is fixed to the outer edge of the connecting plate (4), a first slide groove (6) is provided on the connecting sleeve (3), the length direction of the first slide groove (6) is parallel to the axial direction of the connecting sleeve (3), and the slider (5) is slidably arranged in the first slide groove (6).

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