Structure for sealing cable clamp of suspension bridge

Abstract

The utility model discloses a suspension bridge cable clamp sealing structure which comprises a cable clamp, a bolt is arranged on the cable clamp in a penetrating mode, a fastening section of the bolt penetrates out of the cable clamp, a fastening nut is arranged in the middle of the fastening section, and a gasket is arranged between the bottom of the fastening nut and the cable clamp. A thread part and a containing cavity are arranged in the waterproof nut, the containing cavity is arranged below the thread part and is provided with a downward opening, the fastening section penetrates through the containing cavity to be connected with the thread part, and the fastening nut and the gasket are arranged in the containing cavity; a sealing structure is arranged between the bottom of the waterproof nut and the cable clamp; the cable clamp is further provided with a rain shielding ring, and the rain shielding ring is located on the inner side or the outer side of the sealing structure. According to the scheme, secondary protection can be added on the basis of existing cable clamp sealing, and the service life is longer.

Description

Technical Field

[0001] The utility model relates to a structure for sealing a cable clamp of a suspension bridge, belonging to the field of suspension bridges. Background Art

[0002] Suspension bridges are becoming more and more popular in modern bridge construction. The main cable is one of the main load-bearing components of a suspension bridge that cannot be replaced and has always been called the "lifeline" of the suspension bridge. However, when the bridge is in an environment of spanning rivers, lakes and seas and bearing loads, the corrosion of the main cable wires under natural environment and stress is inevitable. Corrosion reduces the effective strand area and strength. The serious corrosion of the main cable wires seriously endangers the safety of the suspension bridge. Therefore, the protection of the main cable has become the top priority in the design and construction of suspension bridges!

[0003] The sealing of the main cable is a prerequisite and key work for the protection of the main cable. If the sealing is not good, other main cable protection measures, such as dehumidification, will be in vain. A suspension bridge is a systematic project. There are multiple cable clamps arranged on the main cable for connecting the suspenders. A large number of fasteners are required to fix the upper and lower (or left and right) halves of these cable clamps. The connection part of the fasteners is the weakest position for the sealing of the cable. If the sealing of the fastener part of the cable clamp is not good, it is extremely easy for water to leak into the main cable from the bolt holes, and it is very easy for air to leak from this part during the dehumidification process of the main cable.

[0004] At present, most of the bolt parts of the cable clamps in use adopt a waterproof nut screwed on the upper end of the nut. Its structure mainly has two forms. One of them is that after the nut is locked, the waterproof nut is screwed on, and then some sealant is applied to the gaps between the components for sealing. The other one generally sets a rubber sealing ring at the bottom of the waterproof nut or applies sealant on the outer side of the bottom of the waterproof nut for sealing. However, over time, the sealant or the sealing ring will slowly age after years of exposure to the sun and rain, and the previous sealing effect will weaken, or even completely lose the seal. Content of the Utility Model

[0005] The purpose of the utility model is to provide a structure for sealing a cable clamp of a suspension bridge, which can add secondary protection on the basis of the existing cable clamp sealing and has a longer service life.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A structure for the seal of a cable clip of a suspension bridge, comprising a cable clip. A bolt is inserted through the cable clip, and the fastening section of the bolt passes through the cable clip. A fastening nut is provided in the middle of the fastening section, and a washer is provided between the bottom of the fastening nut and the cable clip. It further includes a waterproof nut, which is provided with a threaded portion and a cavity. The cavity is arranged below the threaded portion and opens downward. The fastening section passes through the cavity and is connected to the threaded portion, and the fastening nut and the washer are arranged in the cavity. A sealing structure is provided between the bottom of the waterproof nut and the cable clip. A rain shield is further provided on the cable clip, and the rain shield is located inside or outside the sealing structure.

[0008] Optionally, an annular groove is provided at the bottom of the waterproof nut, and a sealing ring is provided in the annular groove.

[0009] Optionally, both the inner side and the outer side of the annular groove have limiting walls.

[0010] Optionally, a sealant is provided between the bottom of the waterproof nut and the cable clip.

[0011] Optionally, two washers are sequentially provided between the bottom of the fastening nut and the cable clip.

[0012] Optionally, a limiting convex ring is provided at the bottom of the fastening nut, and the washer is sleeved on the limiting convex ring.

[0013] Optionally, a clamping portion is provided on the waterproof nut, and the clamping portion is arranged outside the threaded portion.

[0014] Optionally, the cable clip includes an upper unit and a lower unit, and the upper unit and the lower unit are connected by a plurality of the bolts. Fastening sections are provided at both the upper and lower ends of each bolt, and the fastening sections of each bolt pass through the upper unit and the lower unit respectively. A sealing strip is provided between the upper unit and the lower unit.

[0015] Optionally, a plurality of first rain shields are provided on the upper unit, and the first rain shields correspond to the number and installation positions of the bolts. The first rain shields are arranged inside the waterproof nut and outside the washer.

[0016] Optionally, a plurality of second rain shields are provided on the lower unit, and the second rain shields correspond to the number and installation positions of the bolts. The second rain shields are arranged outside the waterproof nut.

[0017] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are:

[0018] 1. A structure for sealing the cable clamp of a suspension bridge provided by the present utility model is provided with a rain shield structure at the cable clamp fastener, which can effectively block rainwater, serve as a secondary sealing supplement to the sealant or rubber sealing ring, provide an additional layer of sealing protection, extend the service life of the sealing ring and sealant, and has a simple and effective structure and a long service life. It is crucial for ensuring that the cable and fastener are not corroded and maintaining the long-term stability and safety of the bridge structure.

[0019] 2. A structure for sealing the cable clamp of a suspension bridge provided by the present utility model is provided with rain shields at the upper and lower fasteners of the cable clamp. The first rain shield makes the sealing at the upper fastener of the cable clamp more secure, and at the same time avoids the accumulation of rainwater at the sealing structure caused by setting the first rain shield outside the waterproof nut; the second rain shield first blocks the flowing rainwater, and a very small amount of rainwater is blocked by the sealant or rubber ring at the waterproof nut, thereby greatly improving the protection of the main cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the internal structure of the present utility model.

[0021] Figure 2 is Figure 1 an enlarged view of part A of

[0022] Figure 3 is Figure 1 an enlarged view of part B of

[0023] Figure 4 is a schematic diagram of the external structure of the present utility model.

[0024] Reference numerals in the figures: 1 - cable clamp, 11 - upper unit, 12 - lower unit, 2 - bolt, 3 - fastening nut, 4 - washer, 5 - waterproof nut, 51 - threaded part, 6 - sealing structure, 7 - first rain shield, 8 - second rain shield. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will describe the present utility model in detail with reference to the accompanying drawings.

[0026] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0027] A structure for sealing the cable clamp of a suspension bridge, as Figures 1-4As shown in the figure, it includes a cable clip 1, a bolt 2 is passed through the cable clip 1, the fastening section of the bolt 2 passes through the cable clip 1, a fastening nut 3 is provided in the middle of the fastening section, and a washer 4 is provided between the bottom of the fastening nut 3 and the cable clip 1; it also includes a waterproof nut 5, the waterproof nut 5 is provided with a threaded portion 51 and a cavity, the cavity is arranged below the threaded portion 51 and opens downward, the fastening section passes through the cavity and is connected to the threaded portion 51, and the fastening nut 3 and the washer 4 are arranged in the cavity; a sealing structure 6 is provided between the bottom of the waterproof nut 5 and the cable clip 1; a rain shield is also provided on the cable clip 1, and the rain shield is located inside or outside the sealing structure 6.

[0028] Specifically, the cable clip 1 is used to fix and compress the cable of the suspension bridge. The bolt 2 passes through the cable clip 1, and the fastening nut 3 is used to adjust and maintain the tension of the cable. The fastening nut 3 is located in the middle of the fastening section, which can evenly transmit the force and ensure the balance of the cable tension. The washer 4 is placed between the fastening nut 3 and the cable clip 1, which can prevent the fastening nut 3 from directly damaging the cable clip 1, and at the same time can disperse the fastening force and reduce local stress concentration. There is a cavity opening downward in the waterproof nut 5, and the fastening nut 3 and the washer 4 are located in this cavity, which provides a closed space for the fasteners and can effectively prevent moisture from penetrating into the inside of the cable clip 1, protecting the internal bolt 2 and steel wire rope from corrosion. A sealing structure 6 is provided between the bottom of the waterproof nut 5 and the cable clip 1 to ensure that moisture does not penetrate through the contact surface between the nut and the cable clip 1. Particularly, in this solution, the rain shield is located inside or outside the contact surface between the waterproof nut 5 and the cable clip 1, which can further prevent moisture from penetrating along the contact surface between the cable clip 1 and the waterproof nut 5. Whether it is inside or outside, the rain shield can effectively block the rain from flowing to the sealed area and improve the waterproof performance of the whole structure. This solution forms a comprehensive waterproof system through multi-level designs, including the waterproof nut 5, the sealing structure 6 and the rain shield. Each level provides protection against different potential penetration paths, thus greatly improving the overall sealing and waterproof performance.

[0029] As a specific implementation manner of the sealing structure 6, a circular groove is provided at the bottom of the waterproof nut 5, and a sealing ring is provided in the circular groove. During maintenance or replacement, the old sealing ring can be conveniently removed and a new one can be installed, and it can be compressed within a certain range to fill the unevenness of the joint surface, so as to achieve better sealing.

[0030] As another specific implementation manner, both the inner side and the outer side of the circular groove have limiting walls. The limiting walls can ensure that the sealing ring maintains the correct position and shape in the groove, preventing the sealing ring from being overly compressed or stretched during installation or use, thus prolonging the service life of the sealing ring.

[0031] As another specific embodiment of the sealing structure 6, a sealant is provided between the bottom of the waterproof nut 5 and the cable clamp 1. The sealant can fill irregular or complex joint surfaces and is suitable for occasions with variable shapes or where it is difficult to use standard sealing rings. It not only serves as a seal but also bonds different materials, enhancing the stability of the joint part.

[0032] As another specific embodiment, two washers 4 are sequentially provided between the bottom of the fastening nut 3 and the cable clamp 1. The two washers 4 can distribute the pressure of the fastening nut 3 on the cable clamp 1 more evenly, reduce local stress concentration, and protect the cable clamp 1 and the cable from damage. Preferably, radially engaging wedge structures are respectively provided on the inner end faces of the two washers 4, which increases the fastening force during the rotation of the fastening nut 3, further effectively preventing the loosening of the bolt 2 and achieving the effect of self-locking and anti-loosening.

[0033] As another specific embodiment, a limiting collar is provided at the bottom of the fastening nut 3, and the washer 4 is sleeved on the limiting collar. The limiting collar is located at the lower end of the fastening nut 3 and is used to limit the position of the washer 4 to ensure that the washer 4 does not shift during the fastening process.

[0034] As another specific embodiment, a clamping portion is provided on the waterproof nut 5, and the clamping portion is provided outside the threaded portion 51. Since the clamping portion is located outside the threaded portion 51, the force transmission path during operation is more direct, reducing the loss of force during transmission and improving the operation efficiency. Further, the clamping portion can be an external hexagon.

[0035] As another specific embodiment, the cable clamp 1 includes an upper unit 11 and a lower unit 12. The upper unit 11 and the lower unit 12 are connected by a plurality of bolts 2. Fastening sections are provided at both the upper and lower ends of each bolt 2, and the fastening sections of each bolt 2 respectively pass through the upper unit 11 and the lower unit 12; a sealing strip is provided between the upper unit 11 and the lower unit 12. The connection of the bolts 2 provides a stable connection between the upper unit 11 and the lower unit 12, ensuring the stable fixation of the cable. The design of the sealing strip can effectively prevent moisture from entering the cable clamp 1 and reduce corrosion and damage caused by moisture.

[0036] As another specific embodiment, a plurality of first rain shields 7 are provided on the upper unit 11. The number and the installation positions of the first rain shields 7 correspond to those of the bolts 2. The first rain shields 7 are arranged inside the waterproof nuts 5 and outside the washers 4. The rainwater flowing down along the cable clamp 1 is first blocked by the sealant or the rubber sealing ring at the waterproof nut 5. In case of leakage of the sealant or the rubber sealing ring, the rain shields arranged inside the waterproof nuts 5 block the leaked rainwater. In this way, with an additional layer of sealing protection, the sealing at the upper fasteners of the cable clamp 1 is more guaranteed. At the same time, it is avoided that the first rain shields 7 are arranged outside the waterproof nuts 5, which may cause rainwater to accumulate at the sealing structure 6.

[0037] As another specific embodiment, a plurality of second rain shields 8 are provided on the lower unit 12. The number and the installation positions of the second rain shields 8 correspond to those of the bolts 2. The second rain shields 8 are arranged outside the waterproof nuts 5. The rain shields first block the flowing rainwater, and a very small amount of rainwater is blocked by the sealant or the rubber ring at the waterproof nut 5. In this way, with an additional layer of sealing protection, the sealing effect at the lower fasteners of the cable clamp 1 is better.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. The present invention extends to any new features or any new combinations disclosed in this specification, and any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments. Moreover, for the detailed technical features not disclosed in this embodiment, such as specific structures, connection methods, etc., those skilled in the art can obtain them from the prior art, and the present disclosure embodiment does not make specific limitations thereto.

[0039] In the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

Claims

1. A structure for the seal of a cable clamp of a suspension bridge, characterized in that: It includes a cable clip (1), a bolt (2) is passed through the cable clip (1), the fastening section of the bolt (2) passes out of the cable clip (1), a fastening nut (3) is provided in the middle of the fastening section, and a washer (4) is provided between the bottom of the fastening nut (3) and the cable clip (1); it also includes a waterproof nut (5), the waterproof nut (5) is provided with a threaded portion (51) and a cavity, the cavity is arranged below the threaded portion (51) and opens downward, the fastening section passes through the cavity and is connected to the threaded portion (51), and the fastening nut (3) and the washer (4) are arranged in the cavity; a sealing structure (6) is provided between the bottom of the waterproof nut (5) and the cable clip (1); a rain shield is also provided on the cable clip (1), and the rain shield is located inside or outside the sealing structure (6).

2. The structure for the seal of the cable clamp of a suspension bridge according to claim 1, characterized in that: The bottom of the waterproof nut (5) is provided with an annular groove, and a sealing ring is arranged in the annular groove.

3. The structure for the seal of the cable clamp of a suspension bridge according to claim 2, characterized in that: Both the inner side and the outer side of the annular groove are provided with limiting walls.

4. The structure for the seal of the cable clamp of a suspension bridge according to claim 1, characterized in that: Sealing glue is provided between the bottom of the waterproof nut (5) and the cable clip (1).

5. The structure for suspender clamp sealing of a suspension bridge according to claim 1, characterized in that: Two washers (4) are sequentially arranged between the bottom of the fastening nut (3) and the cable clip (1).

6. The structure for the seal of the cable clamp of a suspension bridge according to claim 1, characterized in that: The bottom of the fastening nut (3) is provided with a limiting convex ring, and the washer (4) is sleeved on the limiting convex ring.

7. The structure for the seal of the cable clamp of a suspension bridge according to claim 1, wherein: The waterproof nut (5) is provided with a clamping portion, and the clamping portion is arranged outside the threaded portion (51).

8. The structure for the seal of the cable clamp of a suspension bridge according to claim 1, characterized in that: The cable clip (1) includes an upper unit (11) and a lower unit (12), the upper unit (11) and the lower unit (12) are connected by a plurality of the bolts (2), the upper and lower ends of each bolt (2) are provided with fastening sections, and the fastening sections of each bolt (2) respectively pass out of the upper unit (11) and the lower unit (12); a sealing strip is provided between the upper unit (11) and the lower unit (12).

9. The structure for the seal of the cable clamp of a suspension bridge according to claim 8, characterized in that: A plurality of first rain shields (7) are provided on the upper unit (11), the first rain shields (7) correspond to the number and arrangement positions of the bolts (2), the first rain shields (7) are arranged in the waterproof nut (5) and outside the washer (4).

10. The structure for the seal of the cable clamp of a suspension bridge according to claim 8, characterized in that: A plurality of second rain shields (8) are provided on the lower unit (12), the second rain shields (8) correspond to the number and arrangement positions of the bolts (2), and the second rain shields (8) are arranged outside the waterproof nut (5).

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