Main cable protection device with high safety

Abstract

According to the high-safety main cable protection device, a main cable is arranged in a cavity between a left half sleeve body and a right half sleeve body, the left half sleeve body and the right half sleeve body form a protection sleeve, the top of the left half sleeve body is provided with a plurality of first junction surface connecting plates, and the top of the right half sleeve body is provided with a plurality of second junction surface connecting plates; the plurality of first junction surface connecting plates and the plurality of second junction surface connecting plates are arranged in a one-to-one symmetry manner; a reserved gap is formed between the first junction surface connecting plate and the second junction surface connecting plate, and the reserved gap is filled with a junction surface fire-resistant belt; the bottom of the joint surface fire-resistant belt is connected with the top of the embedded plate, the left side and the right side of the top of the embedded plate are attached to the left half sleeve body and the right half sleeve body respectively, a left inner cavity fire-resistant belt is attached to the inner side of the left half sleeve body, a right inner cavity fire-resistant belt is attached to the inner side of the right half sleeve body, and a gap exists between the left inner cavity fire-resistant belt and the embedded plate. And a gap is formed between the right inner cavity fire-resistant belt and the embedded plate. The main cable protective sleeve provided by the utility model has fireproof capability.

Description

Technical Field

[0001] The utility model relates to a technical improvement of a main cable protection device with high safety, belongs to the field of suspension bridges, and in particular to a main cable protection device with high safety. Background Art

[0002] The main cable is a key load-bearing component of a suspension bridge and cannot be replaced. Currently, the main cable protection measures are to apply sealant, wrap steel wire, and paint to the cable surface, or to wrap steel wire and tape for sealing. In existing technologies, the main cable cannot be wrapped with wire or protected at the entrance and exit of the saddle. To prevent the main cable from being corroded by rain and moisture, a main cable protective sleeve is generally used for sealing. The above protective measures mainly seal the main cable to prevent corrosion. However, existing sealing methods are not fireproof. During the operation of the bridge, as traffic volume increases, the main cable is easily damaged by car collisions or car fires. Therefore, in this case, the fire resistance of the main cable is required, but the existing main cable protective sleeves do not have fireproof capabilities.

[0003] A Chinese patent application with application number CN202321255391.2 and application date May 23, 2023, discloses a pre-branching cable, which specifically relates to the field of cable technology and includes a main cable body and a branch cable body. The branch cable body is arranged on the top of the main cable body, and the outer end of the main cable body is provided with an internal protective sleeve, and the outer end of the internal protective sleeve is provided with an external protective sleeve; the outer end of the external protective sleeve is embedded with a protective component for isolating the cracked external protective sleeve, and the protective component includes a plurality of metal clamps embedded in the external protective sleeve, and a plurality of pins are inserted into the metal clamps, and the bottom end of each pin is inserted into the outer protective sleeve. The utility model uses the pins in the protective component to isolate the cracked external protective sleeve to trim the cracked external protective sleeve, thereby preventing the crack position from continuing to expand, thereby protecting the internal main cable body to the greatest extent, and the provision of the metal clamp can also strengthen the strength of the outer end of the external protective sleeve. However, the above solution does not solve the problem that the main cable protective sleeve does not have fire resistance.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of this patent application, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0005] The purpose of the utility model is to overcome the problem in the prior art that the main cable protection cover has no fireproof capability, and to provide a main cable protection device with high safety in which the main cable protection cover has fireproof capability.

[0006] To achieve the above objectives, the technical solution of the present invention is: a main cable protection device with high safety, comprising a plurality of first joint surface connection plates, a plurality of second joint surface connection plates, a joint surface locking bolt assembly, a left inner cavity fire-resistant belt, a mosaic plate, a joint surface fire-resistant belt and a plurality of protective sleeves, wherein the protective sleeve is composed of a left half sleeve body and a right half sleeve body symmetrically arranged;

[0007] A main cable is arranged in the cavity between the left and right half casings, and the left and right half casings form a protective cover. A plurality of first joint surface connection plates are arranged on the top of the left half casing, and a plurality of second joint surface connection plates are arranged on the top of the right half casing. The plurality of first joint surface connection plates and the plurality of second joint surface connection plates are arranged symmetrically one by one.

[0008] The first joint surface connection plate and the second joint surface connection plate in the same plane are connected by a joint surface locking bolt assembly, and a reserved gap exists between the first joint surface connection plate and the second joint surface connection plate, and the reserved gap is filled with a joint surface refractory strip;

[0009] The bottom of the joint surface refractory belt is connected to the top of the mosaic plate, and the left and right sides of the top of the mosaic plate are respectively fitted with the left half of the casing and the right half of the casing. The inner side of the left half of the casing is fitted with a left inner cavity refractory belt, and the inner side of the right half of the casing is fitted with a right inner cavity refractory belt. There is a gap between the left inner cavity refractory belt and the mosaic plate, and there is a gap between the right inner cavity refractory belt and the mosaic plate.

[0010] The outer side of the left half of the casing is provided with a plurality of left end connecting plates, and the outer side of the right half of the casing is provided with a plurality of right end connecting plates;

[0011] All the left end connecting plates are provided with bolts, and all the right end connecting plates are provided with bolts.

[0012] There are two left end connecting plates and two right end connecting plates;

[0013] The two left end connecting plates and the two right end connecting plates are symmetrically arranged with the center of the left half of the casing as the center;

[0014] The two left end connecting plates are respectively arranged at 45° and 60° with the center of the left half of the casing as the center;

[0015] The two right end connecting plates are respectively arranged at 45° and 60° with the center of the circle of the right half sleeve as the center.

[0016] Multiple protective sleeves are axially combined with the center of the left half sleeve and the right half sleeve as the center. Adjacent protective sleeves are connected by corresponding two left end connecting plates and two right end connecting plates, and adjacent two left end connecting plates and two right end connecting plates are connected by connecting bolts.

[0017] One end of the mosaic plate is welded and fixed to the left half of the casing, and the other end of the mosaic plate is in a wedge-shaped structure and embedded in the inner wall of the right half of the casing.

[0018] The left inner cavity fire-resistant belt, the right inner cavity fire-resistant belt and the joint surface fire-resistant belt are fire-resistant belts made of the same material, and are reflective heat-insulating flame-retardant fire-resistant belts.

[0019] The height of the joint surface refractory belt is greater than the thickness of the left half of the casing, and the upper end side surface of the joint surface refractory belt is embedded in the reserved gap between the first joint surface connecting plate and the second joint surface connecting plate.

[0020] The thickness of the left half of the casing is the same as that of the right half of the casing.

[0021] The left half casing and the right half casing are both formed by bending steel plates into a semi-cylindrical structure.

[0022] The joint surface locking bolt assembly includes a fixing bolt and a positioning nut. One end of the fixing bolt passes through the first joint surface connecting plate and the second joint surface connecting plate in sequence. The positioning nut is threadedly engaged with the fixing bolt, and the side of the positioning nut contacts the side of the second joint surface connecting plate.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. In the present invention, a main cable protection device with enhanced safety features is designed. The bottom of the joint surface fire-resistant strip is connected to the top of the interlocking plate. The top left and right sides of the interlocking plate are respectively attached to the left and right half-casings. The left half-casing is attached to the inside of the left inner cavity fire-resistant strip, and the right half-casing is attached to the inside of the right inner cavity fire-resistant strip. A gap exists between the left inner cavity fire-resistant strip and the interlocking plate, and a gap exists between the right inner cavity fire-resistant strip and the interlocking plate. During use, the fire-resistant strips are installed inside both the left and right half-casings. The heat-insulating and high-temperature-resistant properties of the fire-resistant strips prevent the high temperature heat generated by external flames from being transferred to the main cable and causing damage, thereby protecting the main cable from burns. Furthermore, a reserved gap can accommodate changes in the main cable's shape caused by diameter deviations. Filling the reserved gap with the joint surface fire-resistant strip not only completely encloses the main cable, confining it in a sealed space, but also further enhances fire protection. Therefore, the present main cable protection sleeve is fireproof.

[0025] 2. The utility model provides a highly secure main cable protection device comprising two left-end connecting plates and two right-end connecting plates. The two left-end connecting plates and the two right-end connecting plates are symmetrically arranged with the center of the left half of the casing as the center. The two left-end connecting plates are respectively arranged at 45° and 60° with the center of the left half of the casing as the center; the two right-end connecting plates are respectively arranged at 45° and 60° with the center of the right half of the casing as the center. When in use, the left-end connecting plates and the right-end connecting plates are used to interconnect multiple main cable protection sleeves arranged longitudinally, ensuring that the main cables in the lower region of the main span are continuously protected by the main cable protection sleeves. Therefore, the utility model is convenient to connect and simple to operate.

[0026] 3. In this highly secure main cable protection device, the left and right half casings are of equal thickness. Both are formed from bent steel plates into a semi-cylindrical structure. When in use, the left and right half casings protect the main cable from and cushion the impact of a vehicle impact. The left and right half casings are simple to manufacture, with low cost and a short production cycle. Therefore, this device is safe to use and easy to manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the present utility model.

[0028] Figure 2 It is a schematic diagram of the connection between the first joint surface connecting plate and the second joint surface connecting plate in the present invention.

[0029] Figure 3 It is a schematic diagram of the connection of multiple protective sleeves of the utility model.

[0030] In the figure: left half casing 1, right half casing 2, first joint surface connecting plate 3, second joint surface connecting plate 31, joint surface locking bolt assembly 4, positioning nut 41, left end connecting plate 5, right end connecting plate 51, connecting bolt 6, inner cavity refractory strip 7, right inner cavity refractory strip 71, mosaic plate 8, joint surface refractory strip 9, reserved gap 91. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0032] See also Figures 1 to 3 A main cable protection device with high safety, comprising a plurality of first joint surface connection plates 3, a plurality of second joint surface connection plates 31, a joint surface locking bolt assembly 4, a left inner cavity fire-resistant belt 7, a mosaic plate 8, a joint surface fire-resistant belt 9 and a plurality of protective sleeves, wherein the protective sleeve is symmetrically arranged by a left half sleeve body 1 and a right half sleeve body 2;

[0033] A main cable is arranged in the cavity between the left half casing 1 and the right half casing 2. The left half casing 1 and the right half casing 2 form a protective cover. A plurality of first joint surface connection plates 3 are arranged on the top of the left half casing 1, and a plurality of second joint surface connection plates 31 are arranged on the top of the right half casing 2. The plurality of first joint surface connection plates 3 and the plurality of second joint surface connection plates 31 are arranged symmetrically one by one.

[0034] The first joint surface connecting plate 3 and the second joint surface connecting plate 31 in the same plane are connected by a joint surface locking bolt assembly 4. A reserved gap 91 exists between the first joint surface connecting plate 3 and the second joint surface connecting plate 31. The reserved gap 91 is filled with a joint surface refractory strip 9.

[0035] The bottom of the joint surface refractory belt 9 is connected to the top of the mosaic plate 8, and the left and right sides of the top of the mosaic plate 8 are respectively fitted with the left half casing 1 and the right half casing 2. The inner side of the left half casing 1 is fitted with a left inner cavity refractory belt 7, and the inner side of the right half casing 2 is fitted with a right inner cavity refractory belt 71. There is a gap between the left inner cavity refractory belt 7 and the mosaic plate 8, and there is a gap between the right inner cavity refractory belt 71 and the mosaic plate 8.

[0036] The outer side of the left half housing 1 is provided with a plurality of left end connecting plates 5, and the outer side of the right half housing 2 is provided with a plurality of right end connecting plates 51;

[0037] All of the left end connecting plates 5 are provided with bolts, and all of the right end connecting plates 51 are provided with bolts.

[0038] There are two left end connecting plates 5 and two right end connecting plates 51;

[0039] The two left end connecting plates 5 and the two right end connecting plates 51 are symmetrically arranged with the center of the left half casing 1 as the center;

[0040] The two left end connecting plates 5 are respectively arranged at 45° and 60° with the center of the left half casing 1 as the center;

[0041] The two right end connecting plates 51 are respectively arranged at 45° and 60° with the center of the circle of the right half casing 2 as the center.

[0042] Multiple protective sleeves are axially combined with the center of the left half sleeve 1 and the right half sleeve 2 as the center. The adjacent two protective sleeves are connected by the corresponding two left end connecting plates 5 and two right end connecting plates 51, and the adjacent two left end connecting plates 5 and two right end connecting plates 51 are connected by connecting bolts 6.

[0043] One end of the mosaic plate 8 is welded and fixed to the left half of the casing 1 , and the other end of the mosaic plate 8 is in a wedge-shaped structure and embedded in the inner wall of the right half of the casing 2 .

[0044] The left inner cavity refractory belt 7, the right inner cavity refractory belt 71 and the joint surface refractory belt 9 are refractory belts made of the same material, and are reflective heat-insulating flame-retardant fire-resistant belts.

[0045] The height of the joint surface refractory belt 9 is greater than the thickness of the left half casing 1 , and the upper end side surface of the joint surface refractory belt 9 is embedded in the reserved gap 91 between the first joint surface connecting plate 3 and the second joint surface connecting plate 31 .

[0046] The thickness of the left half housing 1 is the same as that of the right half housing 2 .

[0047] The left half casing 1 and the right half casing 2 are both formed by bending steel plates into a semi-cylindrical structure.

[0048] The joint surface locking bolt assembly 4 includes a fixing bolt and a positioning nut 41. One end of the fixing bolt passes through the first joint surface connecting plate 3 and the second joint surface connecting plate 31 in sequence. The positioning nut 41 is threadedly engaged with the fixing bolt, and the side of the positioning nut 41 contacts the side of the second joint surface connecting plate 31.

[0049] The supplementary description of this utility model is as follows:

[0050] The reserved gap 91 between the joint surfaces of the left half casing 1 and the right half casing 2 can adapt to the shape change of the main cable caused by the diameter deviation of the main cable wire, ensuring that the protective cover can cover the main cable.

[0051] Example 1:

[0052] A main cable protection device with strong safety, the main cable protection device with strong safety includes multiple first joint surface connection plates 3, multiple second joint surface connection plates 31, joint surface locking bolt assemblies 4, left inner cavity fire-resistant belt 7, mosaic plate 8, joint surface fire-resistant belt 9 and multiple protective sleeves, the protective sleeve is composed of a left half-sleeve body 1 and a right half-sleeve body 2 symmetrically arranged; the main cable is arranged in the cavity between the left half-sleeve body 1 and the right half-sleeve body 2, the left half-sleeve body 1 and the right half-sleeve body 2 constitute the protective sleeve, the top of the left half-sleeve body 1 is provided with multiple first joint surface connection plates 3, the top of the right half-sleeve body 2 is provided with multiple second joint surface connection plates 31, multiple first joint surfaces The connecting plate 3 and multiple second joint surface connecting plates 31 are symmetrically arranged one by one; the first joint surface connecting plate 3 and the second joint surface connecting plate 31 in the same plane are connected by a joint surface locking bolt assembly 4, and there is a reserved gap 91 between the first joint surface connecting plate 3 and the second joint surface connecting plate 31, and the reserved gap 91 is filled with a joint surface refractory strip 9; the bottom of the joint surface refractory strip 9 is connected to the top of the mosaic plate 8, and the left and right sides of the top of the mosaic plate 8 are respectively fitted with the left half-casing 1 and the right half-casing 2, and the inner side of the left half-casing 1 is fitted with a left inner cavity refractory strip 7, and the inner side of the right half-casing 2 is fitted with a right inner cavity refractory strip 71, there is a gap between the left inner cavity refractory strip 7 and the mosaic plate 8, and there is a gap between the right inner cavity refractory strip 71 and the mosaic plate 8.

[0053] When used: the fire-resistant belt 9 on the joint surface protects the main cable at the gap of the main cable joint surface, and also avoids the high temperature heat caused by external flame burning being transferred to the main cable and causing damage to the main cable. The left half casing 1 and the right half casing 2 are provided with fire-resistant belts. The heat insulation and high temperature resistance of the fire-resistant belt material further prevent the high temperature heat caused by external flame burning from being transferred to the main cable and causing damage to the main cable, thereby protecting the main cable from burns.

[0054] Example 2:

[0055] Example 2 is basically the same as Example 1, except that:

[0056] A plurality of left end connecting plates 5 are provided on the outer periphery of the left half casing 1, and a plurality of right end connecting plates 51 are provided on the outer periphery of the right half casing 2; all the left end connecting plates 5 are provided with bolts, and all the right end connecting plates 51 are provided with bolts; the number of the left end connecting plates 5 is two, and the number of the right end connecting plates 51 is two; the two left end connecting plates 5 and the two right end connecting plates 51 are symmetrically arranged with the center of the circle of the left half casing 1 as the center; the two left end connecting plates 5 are arranged at 45° and 60° respectively with the center of the left half casing 1 as the center; the two right end connecting plates 51 are arranged at 45° and 60° respectively with the center of the right half casing 2 as the center; multiple protective sleeves are axially assembled with the centers of the left half casing 1 and the right half casing 2 as the center, and adjacent protective sleeves are connected by the corresponding two left end connecting plates 5 and two right end connecting plates 51, and the adjacent two left end connecting plates 5 and two right end connecting plates 51 are connected by connecting bolts 6.

[0057] When used: the end connecting plates are set at 45° and 60°, and are used to interconnect multiple main cable protection sleeves arranged longitudinally to ensure that the main cables in the lower area of ​​the main span can be continuously protected by the main cable protection sleeves.

[0058] Example 3:

[0059] Example 3 is basically the same as Example 1, except that:

[0060] One end of the mosaic plate 8 is welded and fixed to the left half of the casing 1, and the other end of the mosaic plate 8 is wedge-shaped and embedded in the inner wall of the right half of the casing 2; the left inner cavity refractory belt 7, the right inner cavity refractory belt 71 and the joint surface refractory belt 9 are refractory belts made of the same material, and are reflective heat-insulating flame-retardant fire-resistant belts, which are composed of reflective fire-resistant, heat-insulating flame-retardant fire-resistant and high-temperature resistant adhesive materials. The core is mainly made of high-silica fiber material, and its surface is wrapped with aluminum foil tape with flame-retardant function to produce and process it; the height of the joint surface refractory belt 9 is greater than the thickness of the left half of the casing 1, and the upper end side of the joint surface refractory belt 9 is embedded in the reserved gap 91 between the first joint surface connecting plate 3 and the second joint surface connecting plate 31.

[0061] When in use: one end of the mosaic plate 8 is welded to the left half casing 1 or the right half casing 2, and the other end is wedge-shaped and penetrates into the inner wall of the other half casing, which can not only protect the main cable at the gap of the joint surface, but also ensure that the left half casing 1 and the right half casing 2 are locked together. Through the heat insulation and high temperature resistance of the refractory belt material, the high temperature heat caused by external flame combustion is prevented from being transferred to the main cable to cause damage to the main cable, thereby protecting the main cable from burns.

[0062] The above description is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the content disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A main cable protection device with strong safety, characterized by: The main cable protection device with high safety comprises a plurality of first joint surface connection plates (3), a plurality of second joint surface connection plates (31), a joint surface locking bolt assembly (4), a left inner cavity fire-resistant belt (7), a mosaic plate (8), a joint surface fire-resistant belt (9) and a plurality of protective sleeves, wherein the protective sleeve is composed of a left half sleeve body (1) and a right half sleeve body (2) which are symmetrically arranged; A main cable is arranged in the cavity between the left half casing (1) and the right half casing (2), the left half casing (1) and the right half casing (2) form a protective casing, a plurality of first joint surface connection plates (3) are arranged on the top of the left half casing (1), and a plurality of second joint surface connection plates (31) are arranged on the top of the right half casing (2), and the plurality of first joint surface connection plates (3) and the plurality of second joint surface connection plates (31) are arranged symmetrically one by one; The first joint surface connection plate (3) and the second joint surface connection plate (31) in the same plane are connected via a joint surface locking bolt assembly (4); a reserved gap (91) exists between the first joint surface connection plate (3) and the second joint surface connection plate (31); and the reserved gap (91) is filled with a joint surface refractory strip (9); The bottom of the joint surface refractory belt (9) is connected to the top of the mosaic plate (8), and the left and right sides of the top of the mosaic plate (8) are respectively attached to the left half of the casing (1) and the right half of the casing (2). The inner side of the left half of the casing (1) is attached with a left inner cavity refractory belt (7), and the inner side of the right half of the casing (2) is attached with a right inner cavity refractory belt (71). There is a gap between the left inner cavity refractory belt (7) and the mosaic plate (8), and there is a gap between the right inner cavity refractory belt (71) and the mosaic plate (8).

2. A main cable protection device with high safety according to claim 1, characterized in that: The outer periphery of the left half casing (1) is provided with a plurality of left end connecting plates (5), and the outer periphery of the right half casing (2) is provided with a plurality of right end connecting plates (51); All the left end connecting plates (5) are provided with bolts, and all the right end connecting plates (51) are provided with bolts.

3. A main cable protection device with high safety according to claim 2, characterized in that: The number of the left end connecting plates (5) is two, and the number of the right end connecting plates (51) is two; The two left end connecting plates (5) and the two right end connecting plates (51) are symmetrically arranged with the center of the left half casing (1) as the center; The two left end connecting plates (5) are respectively arranged at 45° and 60° with the center of the left half casing (1) as the center; The two right end connecting plates (51) are respectively arranged at 45° and 60° with the center of the circle of the right half casing (2) as the center.

4. The main cable protection device with high safety according to claim 1, characterized in that: The plurality of protective sleeves are axially assembled with the center of the left half sleeve body (1) and the right half sleeve body (2) as the center, and two adjacent protective sleeves are connected by corresponding two left end connecting plates (5) and two right end connecting plates (51), and the two adjacent left end connecting plates (5) and two right end connecting plates (51) are connected by connecting bolts (6).

5. A main cable protection device with high safety according to claim 4, characterized in that: One end of the mosaic plate (8) is welded and fixed to the left half housing (1), and the other end of the mosaic plate (8) is in a wedge-shaped structure and is embedded in the inner wall of the right half housing (2).

6. The main cable protection device with high safety according to claim 1, characterized in that: The left inner cavity fire-resistant belt (7), the right inner cavity fire-resistant belt (71), and the joint surface fire-resistant belt (9) are fire-resistant belts made of the same material and are reflective heat-insulating flame-retardant fire-resistant belts.

7. A main cable protection device with high safety according to claim 6, characterized in that: The height of the joint surface refractory strip (9) is greater than the thickness of the left half casing (1), and the upper end side surface of the joint surface refractory strip (9) is embedded in the reserved gap (91) between the first joint surface connecting plate (3) and the second joint surface connecting plate (31).

8. A main cable protection device with high safety according to claim 7, characterized in that: The thickness of the left half casing (1) is the same as that of the right half casing (2).

9. A main cable protection device with high safety according to claim 8, characterized in that: The left half casing (1) and the right half casing (2) are both formed by bending steel plates to form a semi-cylindrical structure.

10. A main cable protection device with high safety according to any one of claims 1 to 9, characterized in that: The joint surface locking bolt assembly (4) comprises a fixing bolt and a positioning nut (41), one end of the fixing bolt passes through the first joint surface connecting plate (3) and the second joint surface connecting plate (31) in sequence, the positioning nut (41) is threadedly engaged with the fixing bolt, and the side surface of the positioning nut (41) contacts the side surface of the second joint surface connecting plate (31).

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