A fireproof sealing cable

Abstract

This invention discloses a fire-resistant sealing cable, comprising a cable body, an adjusting screw, and a casting joint. One end of the cable body is fixedly installed inside the casting joint using castable material. The adjusting screw is connected and fixed to the cable body through the casting joint. A heat insulation plate is provided between the adjusting screw and the castable material, and the heat insulation plate is fixedly installed on the casting joint. A fireproof cover is fitted over the outside of the casting joint, and a heat insulation cylinder is installed inside the fireproof cover. The heat insulation cylinder is fitted onto the cable body and is detachably connected to the casting joint. Fire-retardant coating layers are provided between the fireproof cover and the casting joint, between the heat insulation cylinder and the cable body, and between the heat insulation plate and the castable material. This invention, through the use of the heat insulation cylinder and heat insulation plate, can prevent flames from directly impacting the fire-resistant weak points of the sealing cable in the event of a fire, thus increasing the protection time of the sealing cable. By covering the casting joint of the sealing cable with a fireproof cover, secondary protection is provided for the sealing cable, improving its fire resistance limit.

Description

Technical Field

[0001] This invention relates to the field of metal products technology, and in particular to a fire-resistant sealing cable. Background Technology

[0002] In densely populated areas such as building structures, long-span cable net structures, and stadiums, the fire resistance requirements for sealing cables are extremely high. The fire resistance time is not clearly specified in the relevant standards, and there is little research on related fire resistance. As the most important load-bearing component in building structures, long-span cable net structures, and stadiums, the fire resistance rating of sealing cables directly affects the safety of the structure, property, and personnel. This places fire resistance rating requirements on sealing cables used in such applications.

[0003] The existing sealing cable has a cast joint at one end and a fork-ear cast joint or an anchor cup nut type joint at the other end. The casting material is a zinc-copper alloy, which has a melting point of about 450℃. When exposed to fire, it will soften quickly, causing the sealing cable to fail to anchor and the structure to be damaged. Moreover, the casting part is not protected, and the heat insulation and heat resistance effect is poor. Therefore, in order to meet market demand, the sealing cable needs to be specially designed to increase the fire resistance rating to meet the stress and fire resistance requirements of building structures, large-span cable net structures, and stadium sealing cables. Summary of the Invention

[0004] The purpose of this invention is to provide a fire-resistant sealing cable to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides a fire-resistant sealing cable, comprising a cable body, an adjusting screw, and a casting joint. One end of the cable body is fixedly installed inside the casting joint via a casting material. The adjusting screw is connected and fixed to the cable body through the casting joint. A heat insulation plate is provided between the adjusting screw and the casting material, and the heat insulation plate is fixedly installed on the casting joint. A fireproof cover is fitted on the outside of the casting joint, and a heat insulation cylinder is provided inside the fireproof cover. The heat insulation cylinder is fitted onto the cable body and is detachably connected to the casting joint. A fireproof coating layer is provided between the fireproof cover and the casting joint, between the heat insulation cylinder and the cable body, and between the heat insulation plate and the casting material.

[0006] Preferably, the fireproof cover includes a fixing plate, a cover body, and a sealing cover. The fixing plate and the sealing cover are respectively disposed at both ends of the cover body. The fixing plate is threadedly connected to the adjusting screw. The sealing cover is sleeved on the cable body. The cover body is fixedly connected to the fixing plate, and the sealing cover is detachably connected to the cover body.

[0007] Preferably, both the cover and the sealing cover are separate structures. The separate structures of the cover are fixed by welding, and the separate structures of the sealing cover are fixed by bolts.

[0008] Preferably, both the cover and the sealing cover are conical structures, and the outer cone of the cover and the outer cone of the sealing cover have the same cone angle.

[0009] Preferably, the outer walls of the fireproof cover and the cable body are coated with a thin or thick fireproof coating layer.

[0010] Preferably, a bushing is installed between the heat insulation cylinder and the cable body, and the bushing is located at the end of the heat insulation cylinder away from the casting joint.

[0011] Preferably, a connecting sleeve is slidably sleeved on the adjusting screw, the adjusting screw and the connecting sleeve are spherically hinged and limited, the connecting sleeve is threadedly connected to one end of the casting joint near the heat insulation plate, and the heat insulation plate is disposed inside the connecting sleeve.

[0012] Preferably, the fireproof coating layer between the fireproof cover and the casting joint is a thick fireproof coating layer.

[0013] Preferably, the sealed steel wire rope used in the cable body has an outer layer of 2-3 layers of Z-shaped steel wire and an inner layer of round steel wire. Both the inner and outer steel wires are protected by a zinc-5% aluminum-mixed rare earth alloy coating.

[0014] Compared with the prior art, the present invention has the following advantages and technical effects:

[0015] The fire-resistant sealing cable provided by this invention features a specially designed casting joint. Heat insulation cylinders and heat insulation plates are added to both ends of the casting joint. During installation, the inside of the heat insulation cylinder is coated with fire-retardant paint. Before installation, the end face of the casting material is coated with fire-retardant paint to provide flame isolation, preventing flames from directly impacting the fire-resistant weak points of the sealing cable in the event of a fire, thus increasing the protection time of the sealing cable. Furthermore, by covering the casting joint of the sealing cable with a fire-resistant cover, a secondary protection is provided, further improving the fire resistance limit of the sealing cable. The fire-resistant cover is coated both inside and out with fire-retardant paint, protecting the casting area of ​​the sealing cable and further enhancing its fire resistance time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the existing sealing cable structure;

[0018] Figure 2This is a schematic diagram of the fireproof sealing cable of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the fireproof cover of the present invention;

[0020] The components are: 1. Cable body; 2. Adjusting screw; 3. Heat insulation plate; 4. Casting material; 5. Fireproof cover; 6. Heat insulation cylinder; 7. Fireproof coating layer; 8. Casting joint; 9. Connecting sleeve; 10. Bushing; 51. Fixing plate; 52. Cover body; 53. Sealing cover. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other. The described embodiments are merely some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention. The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] This invention provides a fireproof sealing cable, comprising a cable body 1, an adjusting screw 2, and a casting joint 8. One end of the cable body 1 is fixedly installed inside the casting joint 8 via a casting material 4. The adjusting screw 2 is connected and fixed to the cable body 1 via the casting joint 8. A heat insulation plate 3 is provided between the adjusting screw 2 and the casting material 4, and the heat insulation plate 3 is fixedly installed on the casting joint 8. A fireproof cover 5 is fitted on the outside of the casting joint 8, and a heat insulation cylinder 6 is provided inside the fireproof cover 5. The heat insulation cylinder 6 is fitted on the cable body 1 and is detachably connected to the casting joint 8. A fireproof coating layer 7 is provided between the fireproof cover 5 and the casting joint 8, between the heat insulation cylinder 6 and the cable body 1, and between the heat insulation plate 3 and the casting material 4.

[0023] Furthermore, the fireproof cover 5 includes a fixing plate 51, a cover body 52, and a sealing cover 53. The fixing plate 51 and the sealing cover 53 are respectively disposed at both ends of the cover body 52. ​​The fixing plate 51 is threadedly connected to the adjusting screw 2, and the sealing cover 53 is sleeved on the cable body 1. The cover body 52 is fixedly connected to the fixing plate 51, and the sealing cover 53 is detachably connected to the cover body 52. ​​Both the cover body 52 and the sealing cover 53 are split structures. The split structure of the cover body 52 is fixed by welding during installation and is welded to the fixing plate 51. The split structure of the sealing cover 53 is fixed by bolts.

[0024] During installation of the cover 52, the fixing plate 51 is threaded onto the adjusting screw 2. The two halves of the cover 52 are welded on site and then welded onto the fixing plate 51. The two halves of the sealing cover 53 are fixed to the cable body 1 and the cover 52 with bolts for easy installation.

[0025] Furthermore, both the cover 52 and the sealing cover 53 are conical structures, and the outer cone of the cover 52 and the outer cone of the sealing cover 53 have the same cone angle.

[0026] Furthermore, the outer walls of the fireproof cover 5 and the cable body 1 are coated with a thin or thick fireproof coating layer.

[0027] Furthermore, a bushing 10 is installed between the heat insulation cylinder 6 and the cable body 1, and the bushing 10 is located at the end of the heat insulation cylinder 6 away from the casting joint 8.

[0028] Furthermore, a connecting sleeve 9 is slidably sleeved on the adjusting screw 2. The adjusting screw 2 and the connecting sleeve 9 are spherically hinged and limited. The connecting sleeve 9 is threadedly connected to one end of the casting joint 8 near the heat insulation plate 3. The heat insulation plate 3 is set inside the connecting sleeve 9.

[0029] Furthermore, the fireproof coating layer 7 between the fireproof cover 5 and the casting joint 8 is a thick fireproof coating layer.

[0030] Furthermore, the sealed steel wire rope used in cable body 1 has an outer layer of 2-3 layers of Z-shaped steel wire and an inner layer of round steel wire. Both the inner and outer steel wires are protected by a zinc-5% aluminum-mixed rare earth alloy coating.

[0031] The fire-resistant sealing cable provided by this invention features a specially designed casting joint 8. A heat-insulating cylinder 6 and a heat-insulating plate 3 are added to both ends of the casting joint 8. During installation, the inside of the heat-insulating cylinder 6 is coated with fire-retardant paint. Before installation, the end face of the casting material 4 is fully coated with fire-retardant paint to provide flame isolation, preventing flames from directly impacting the fire-resistant weak points of the sealing cable in case of fire, thus increasing the protection time of the sealing cable. Furthermore, a fire-resistant cover 5 is placed over the casting joint 8 of the sealing cable, providing secondary protection and improving the fire resistance limit of the sealing cable. The fire-resistant cover 5 is coated both inside and out with fire-retardant paint, protecting the casting part of the sealing cable and further increasing the fire resistance time of the sealing cable.

[0032] The fire-resistant sealing cable provided by this invention has been tested and verified to achieve a fire resistance limit of over 2 hours and 3.5 hours respectively, depending on the thickness of the fire-retardant coating on the cable body 1, under continuous constant tension. This significantly improves the fire resistance limit and can further promote the application and fire safety of fire-resistant sealing cables in building structures, large-span cable net structures, and sports venues.

[0033] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A fireproof sealing cable, comprising a cable body (1), an adjusting screw (2), and a casting joint (8), wherein one end of the cable body (1) is fixedly installed in the casting joint (8) via a casting material (4), and the adjusting screw (2) is connected and fixed to the cable body (1) via the casting joint (8), characterized in that, A heat insulation plate (3) is provided between the adjusting screw (2) and the casting material (4), and the heat insulation plate (3) is fixedly installed on the casting joint (8); a fireproof cover (5) is sleeved on the outside of the casting joint (8), and a heat insulation cylinder (6) is provided inside the fireproof cover (5). The heat insulation cylinder (6) is sleeved on the cable body (1), and the heat insulation cylinder (6) is detachably connected to the casting joint (8); a fireproof coating layer (7) is provided between the fireproof cover (5) and the casting joint (8), between the heat insulation cylinder (6) and the cable body (1), and between the heat insulation plate (3) and the casting material (4); The adjusting screw (2) is slidably fitted with a connecting sleeve (9). The adjusting screw (2) and the connecting sleeve (9) are spherically hinged and limited. The connecting sleeve (9) is threadedly connected to one end of the casting joint (8) near the heat insulation plate (3). The heat insulation plate (3) is disposed inside the connecting sleeve (9).

2. The fire-resistant sealing cable according to claim 1, characterized in that, The fireproof cover (5) includes a fixing plate (51), a cover body (52) and a sealing cover (53). The fixing plate (51) and the sealing cover (53) are respectively disposed at both ends of the cover body (52). The fixing plate (51) is threadedly connected to the adjusting screw (2). The sealing cover (53) is sleeved on the cable body (1). The cover body (52) is fixedly connected to the fixing plate (51). The sealing cover (53) is detachably connected to the cover body (52).

3. The fire-resistant sealing cable according to claim 2, characterized in that, Both the cover (52) and the sealing cover (53) are split structures. The split structure of the cover (52) is fixed by welding, and the split structure of the sealing cover (53) is fixed by bolts.

4. The fire-resistant sealing cable according to claim 2, characterized in that, Both the cover (52) and the sealing cover (53) are conical structures, and the outer cone of the cover (52) and the outer cone of the sealing cover (53) have the same cone angle.

5. The fire-resistant sealing cable according to claim 1, characterized in that, The fireproof coating layer (7) between the fireproof cover (5) and the casting joint (8) is a thick fireproof coating layer.

6. The fire-resistant sealing cable according to claim 1, characterized in that, The sealing steel wire rope used in the cable body (1) has 2-3 layers of Z-shaped steel wire on the outer layer and round steel wire on the inner layer. Both the inner and outer steel wires are protected by zinc-5% aluminum-mixed rare earth alloy coating.

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