Integral rubber sealing assembly of suspension bridge cable clamp and construction method of integral rubber sealing assembly

Abstract

The invention discloses an integral rubber sealing assembly of suspension bridge cable clamps and a construction method thereof.The device comprises two semi-ring cable clamps clamped on the outer side of a steel main cable and an air bag sealing ring embedded between the semi-ring cable clamps and the steel main cable, each semi-ring cable clamp comprises a clamping part and a locking part, and a U-shaped spring sealing strip is embedded in each locking part; a steel wire rope is wound on the outer side of the steel main cable, and the air bag sealing rings are arranged between the clamping part and the steel wire rope and between the U-shaped sealing strip and the steel wire rope. The method comprises the following steps: 1, restraining a steel main cable, and installing a semi-ring cable clamp; 2, fastening the steel main cable, and sealing the semi-ring cable clamp; and thirdly, the semi-ring cable clamps are fixed, and the integral rubber sealing assembly is formed. By fixing the semi-ring cable clamps step by step, the integral rubber sealing assembly wrapping the outer side of the steel main cable is formed, rusting inside the steel main cable and the cable clamps is effectively avoided, the service life is prolonged, and the rubber sealing assembly can be replaced under the conditions that normal running of a bridge is guaranteed and fastening bolts of the semi-ring cable clamps are not loosened.

Description

Technical Field

[0001] The invention belongs to the technical field of sealing and installation of suspension bridge cable clamps, and in particular relates to an integral rubber sealing component of a suspension bridge cable clamp and a construction method thereof. Background Art

[0002] During the construction of a suspension bridge, cable clamps are needed to constrain the main steel cables to facilitate the subsequent suspension of the main steel cables through the cable clamps. Therefore, as a core load-bearing component, the quality of the cable clamps determines the safety of the bridge.

[0003] The existing cable clamp sealing method is to use rubber sealant for sealing. Although the sealant can be applied for sealing, since the sealant is naturally vulcanized, it has a large deformation, wastes materials, is labor-intensive and time-consuming, is prone to bubbles, and is difficult to control quality. In addition, the existing sealant has a short service life and cannot meet the current user's requirements for a long life of the sealing strip.

[0004] On the other hand, a wedge-shaped rubber sealing sleeve is used in the ring seam of the cable clamp. Its structure is that a part of the front end of the rubber sealing sleeve is wrapped on the metal jacket of the cable clamp end face, and most of it is wrapped on the steel main cable. The cable clamp itself is not sealed as a whole, and the wedge-shaped rubber sealing sleeve is exposed to the outside and is affected by weather aging, which is not conducive to extending the service life.

[0005] When traditional O-shaped or rectangular rubber sealing strips are used for sealing, and the compression reaches about 50-60%, the structure has greatly exceeded the allowable compression of the cable clamp sealing strip, causing the sealing strip to be fatigued, bulging or even ruptured, shortening its service life. In addition, the width of the sealing strip is more than twice the original width. The compressed sealing strip part has bulged out of the outside of the cable clamp, exceeding the allowable compression amount. Structurally, it is not suitable for the use requirements of cable clamps on large and medium-sized bridges.

[0006] In addition, in terms of the gap tolerance of the cable clamps, when large and medium-sized cable clamps are used to restrain and lock the steel main cable, the steel main cable composed of multiple thin steel cables is gradually compressed in a fluffy state, and the two semi-ring cable clamps are prone to form a certain degree of misalignment during the compression process. As a result, the sealing strip installed between the two semi-ring cable clamps is also prone to misalignment. In addition, the compression amount is relatively large, which may cause the sealing strip to be crushed, resulting in sealing failure.

[0007] Therefore, there is a lack of an integrated rubber sealing assembly and a construction method thereof that is reasonably designed, simple to install, and can adapt to a certain degree of misalignment of two half-ring cable clamps on a suspension bridge. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide an integral rubber sealing assembly for a suspension bridge cable clamp in view of the deficiencies in the above-mentioned prior art. By arranging two semi-ring cable clamps, it is convenient to form a circular ring-shaped cable clamp wrapped around the outside of the steel main cable, so as to realize the constraint of the steel main cable, and then facilitate the subsequent suspension construction of the steel main cable using the cable clamp. The airbag sealing ring and the U-shaped spring sealing strip are located in the semi-ring cable clamp, which effectively avoids fatigue, bulging and even rupture of the rubber. At the same time, by arranging the airbag sealing ring and the U-shaped spring sealing strip as compressible hollow structures, the airbag sealing ring can meet the 360° circumferential misalignment sealing, and the U-shaped spring sealing strip can meet the sealing requirements in actual situations when the two semi-ring cable clamps are parallel or tilted and misaligned to a certain extent, which is convenient for promotion and use.

[0009] In order to solve the above technical problems, the technical solution adopted by the present invention is: an integral rubber sealing assembly for a suspension bridge cable clamp, characterized in that: a plurality of steel main cables are arranged on the suspension bridge, characterized in that: it comprises two semi-ring cable clamps clamped on the outside of the steel main cables and an airbag sealing ring embedded between the inner hole surfaces of the two ends of the semi-ring cable clamps and the steel main cables;

[0010] The semi-ring cable clamp comprises a clamping part and locking parts arranged on both sides of the clamping part, a U-shaped spring sealing strip is embedded in the locking part, a steel wire rope is wound around the outer side of the steel main cable, and the airbag sealing ring is arranged between the inner hole surfaces at both ends of the clamping part and the steel wire rope, and between the end surface of the U-shaped spring sealing strip and the steel wire rope;

[0011] The outer circumferential surfaces and conical surfaces of both ends of the clamping part, the conical surface of the airbag sealing ring and the outer circumferential surface of the wire rope are covered with a winding layer, the winding layer is wound around the outer side of the locking part, and the outer surface of the winding layer is provided with an annular tightening belt;

[0012] The airbag sealing ring includes a high compression part, a low compression part and a connecting part which are connected in sequence, a first airbag cavity is arranged in the high compression part, a second airbag cavity is arranged in the low compression part, a vent hole is arranged on the connecting part, and the first airbag cavity, the second airbag cavity and the vent hole are connected.

[0013] The above-mentioned integrated rubber sealing assembly of the suspension bridge cable clamp is characterized in that the locking parts of the two semi-ring cable clamps are connected by a first fixing bolt.

[0014] The above-mentioned integrated rubber sealing assembly of the suspension bridge cable clamp is characterized in that: the high compression portion is located between the end surface of the U-shaped spring sealing strip and the steel wire rope, the low compression portion is located between the inner hole surfaces at both ends of the clamping portion and the steel wire rope, and the connecting portion is located between the winding layer and the steel wire rope;

[0015] The lower surfaces of the high compression portion and the low compression portion are both arc-shaped concave-convex surfaces, and the cross-section of the connecting portion is a trapezoid.

[0016] The above-mentioned integrated rubber sealing assembly of the suspension bridge cable clamp is characterized in that the height of the first airbag cavity is greater than the height of the second airbag cavity.

[0017] The above-mentioned integrated rubber sealing assembly of the suspension bridge cable clamp is characterized in that the number of the vent holes is 1-3, and they are evenly arranged circumferentially on the inclined conical surface of the connecting part.

[0018] The above-mentioned integral rubber sealing assembly of a suspension bridge cable clamp is characterized in that: a first groove for inserting an airbag sealing ring is provided on the inner hole surface on both sides of the locking part, and a second groove for inserting an annular fastening belt hoop is provided on the outer circular surface of the clamping part.

[0019] The above-mentioned integral rubber sealing assembly of a suspension bridge cable clamp is characterized in that: the U-shaped spring sealing strip is an internal hollow structure, exhaust holes are provided on both sides of the U-shaped spring sealing strip, and the end face of the U-shaped spring sealing strip is an arc surface adapted to the outer cylindrical surface of the high compression part.

[0020] At the same time, the present invention also discloses a construction method of an integral rubber sealing assembly of a suspension bridge cable clamp, which forms an integral rubber sealing assembly by fixing the semi-ring cable clamp in steps, effectively avoiding rusting of the steel main cable, and also prolonging the service life of the steel main cable and the integral rubber sealing assembly. The method has simple steps and convenient operation, and is characterized in that the method comprises the following steps:

[0021] Step 1: Constrain the steel main cable and install the half-loop cable clamp: Wrap the steel wire rope around the outer surface of the steel main cable, then sleeve the clamping parts of the two half-loop cable clamps on the outside of the steel wire rope, and then adjust the first fixing bolts on the two locking parts to the first tightening stage, that is, the spacing between the two half-loop cable clamps is adapted to the thickness of the U-shaped spring sealing strip, so that the two half-loop cable clamps are clamped on the steel wire rope, and then embed the U-shaped spring sealing strip into the positioning groove between the locking parts close to each other on the two half-loop cable clamps;

[0022] Step 2: Fasten the main steel cable and seal the half ring cable clamp:

[0023] Step 201, installing the airbag sealing ring: squeeze the airbag sealing ring so that the gas in the first airbag cavity and the second airbag cavity is discharged outward through the vent hole, and then the airbag sealing ring is embedded between the inner hole surface of the clamping part of the semi-ring cable clamp and the steel wire rope, and then the first fixing bolts on the two locking parts are adjusted to the second tightening stage, so that the semi-ring cable clamp squeezes the airbag sealing ring between the inner hole surface of the clamping part and the steel wire rope, and at the same time squeezes the U-shaped spring sealing strip into the positioning groove between the two locking parts, and makes the end face of the U-shaped spring sealing strip tightly attached to the outer circular surface of the first airbag of the airbag sealing ring;

[0024] Step 202, increasing the internal pressure of the airbag sealing ring: using a booster pump to deliver gas to the first airbag cavity and the second airbag cavity of the airbag sealing ring through the vent hole, so that the pressure in the first airbag cavity and the second airbag cavity is increased, and then the height of the airbag sealing ring is increased, so that the airbag sealing ring exerts pressure on the surface of the inner hole of the clamping part and the steel wire rope, eliminating the gap between the inner hole of the clamping part and the steel wire rope, and then the vent hole is sealed with a rubber sealing plug;

[0025] Step 3. Fix the semi-ring cable clamp to form an integral rubber sealing assembly: cover the outer circular surface and conical surface of the clamping part, the oblique conical surface of the airbag sealing ring and the outer surface of the wire rope located outside the airbag sealing ring with a winding layer, then install an annular fastening belt on the outer surface of the winding layer located above the clamping part, and fix the annular fastening belt with a second fastening bolt, so that the semi-ring cable clamp, the airbag sealing ring and the U-shaped spring sealing strip become a whole to form an integral rubber sealing assembly.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] 1. The present invention provides two half-ring cable clamps for facilitating installation of the integral sealing assembly, thereby forming a circular ring-shaped cable clamp wrapped around the outside of the steel main cable, thereby constraining the steel main cable, and further facilitating subsequent suspension construction of the steel main cable using the cable clamp, thereby facilitating popularization and use.

[0028] 2. The present invention provides an airbag sealing ring to facilitate sealing the gap between the semi-circular cable clamp and the steel main cable, and the airbag sealing ring is located in the semi-circular cable clamp to avoid contact with air and rainwater to the greatest extent, effectively avoiding fatigue, bulging and even rupture of the rubber; by providing the first airbag cavity and the second airbag cavity, it is convenient to squeeze the airbag sealing ring to reduce its height, so that it can be inserted between the clamping part and the steel wire rope, and then by transmitting gas into the first airbag cavity and the second airbag cavity, the height of the airbag sealing ring is increased, and at the same time, the pressure in the airbag sealing ring is increased, so that It can generate relative forces with the clamping part and the steel wire rope at the same time and eliminate the gap among the three, and it is highly practical. In addition, in actual construction, the cross-sections of multiple steel main cables are approximately circular. After the steel wire rope is wrapped around the steel main cable, a structure with multiple continuous arch surfaces and an approximately circular outer surface is formed. By arranging a circular arc concave and convex surface on the lower surface of the airbag sealing ring, it is convenient to increase the contact area between the airbag sealing ring and the steel wire rope, so as to better adapt to the uneven outer surface of the steel wire rope. By arranging a compressible airbag sealing ring, the 360° circumferential staggered sealing of the steel main cable can be satisfied.

[0029] 3. The present invention provides a U-shaped spring sealing strip to facilitate sealing the planar connection between the two side surfaces and the two end surfaces of the two half-ring cable clamps, and the U-shaped spring sealing strip adopts a rubber strip, which is convenient for elastic compression when the first fixing bolts on the two clamping parts are tightened, so as to achieve sealing of the gap between the two clamping parts, and the operation is reliable and stable, and the use effect is good; in addition, since the U-shaped spring sealing strip is installed in the positioning groove of the docking plane of the two half-ring cable clamps, when the two half-ring cable clamps are parallel or tilted, the compressed U-shaped spring sealing strip can still be clamped in the positioning groove to meet the sealing requirements, and exhaust holes are opened on both end surfaces of the sealing strip. When the sealing strip is compressed to a certain height, the exhaust holes will be automatically closed, so that a certain air pressure is generated in the sealing strip to ensure the elasticity and sealing performance of the sealing strip.

[0030] 4. The method of the present invention has simple steps and is easy to operate. By fixing the semi-ring cable clamp in steps, the airbag sealing ring can be used to enhance the sealing performance of the semi-ring cable clamp, thereby forming an integral rubber sealing assembly, which effectively prevents the steel main cable from rusting. At the same time, it also prolongs the service life of the steel main cable and the integral rubber sealing assembly, making it easy to promote and use.

[0031] 5. The innovation of the present invention also lies in that the rubber sealing assembly can be replaced while ensuring the normal operation of the bridge and the fixing bolts of the half-ring cable clamp are not loosened, and the U-shaped spring sealing strip is a compressible spring structure. When replacing, spring sealing strips with different numbers of layers can be matched according to the spacing between the two half-cable clamps after compression; at the same time, the airbag sealing ring is a hollow structure, and the outer diameter of the high-compression part of the airbag sealing ring is smaller than the inner hole diameter of the clamping part after compression, so the airbag sealing ring can be easily replaced, providing a reliable guarantee for the maintenance and replacement of the rubber sealing assembly under special circumstances.

[0032] In summary, the integral rubber sealing assembly of the cable clamp of the suspension bridge adopted in the present invention is convenient to form a circular cable clamp wrapped around the outside of the steel main cable by setting two semi-ring cable clamps, so as to restrain the steel main cable, and then facilitate the subsequent suspension construction of the steel main cable by using the cable clamp, and the airbag sealing ring and the U-shaped spring sealing strip are located in the semi-ring cable clamp, which effectively avoids fatigue, bulging and even rupture of the rubber; at the same time, by setting the airbag sealing ring and the U-shaped spring sealing strip as compressible hollow structures, the airbag sealing ring can meet the 360° circumferential misalignment sealing, and the U-shaped spring sealing strip can meet the sealing requirements in actual situations when there is a certain parallel or inclined misalignment between the two semi-ring cable clamps; the construction method adopted is simple in steps and convenient in operation, and the integral rubber sealing assembly is formed by fixing the semi-ring cable clamps in steps, which effectively avoids rusting inside the steel main cable and the cable clamp, and also prolongs the service life of the steel main cable and the integral rubber sealing assembly, which is convenient for promotion and use.

[0033] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the present invention.

[0035] Figure 2 It is a cross-sectional view of the present invention.

[0036] Figure 3 The schematic diagram is a structural diagram of the present invention without a connecting portion.

[0037] Figure 4 for Figure 3 AA cross-section diagram.

[0038] Figure 5 for Figure 4 Enlarged view of point B.

[0039] Figure 6 It is a schematic diagram of the cross-sectional structure of the airbag sealing ring of the present invention.

[0040] Figure 7 It is a schematic diagram of the structure of the U-shaped spring sealing strip of the present invention.

[0041] Figure 8 for Figure 7 Right view of .

[0042] Fig. 9 for Figure 7 CC cross-section diagram.

[0043] Fig.10 The figure is a flowchart of the method of the present invention.

[0044] Description of reference numerals:

[0045] 1—steel main cable; 2—clamping part; 3—connecting part;

[0046] 4—housing; 5—U-shaped spring sealing strip; 6—wire rope;

[0047] 7—wrap layer; 8—annular fastening belt; 9—airbag sealing ring;

[0048] 10—high compression part; 11—low compression part; 12—connecting part;

[0049] 13—first airbag cavity; 14—second airbag cavity; 15—ventilation hole;

[0050] 16—arc concave-convex surface; 17—first fastening bolt; 18—second fastening bolt;

[0051] 19—first groove; 20—end face; 21—exhaust hole. DETAILED DESCRIPTION

[0052] like Figures 1 to 9 As shown, an integral rubber sealing assembly of a suspension bridge cable clamp of the present invention is provided with a plurality of steel main cables 1 on the suspension bridge, the integral rubber sealing assembly comprises two semi-ring cable clamps clamped on the outer sides of the steel main cables 1 and an airbag sealing ring 9 embedded between the inner hole surfaces at both ends of the semi-ring cable clamps and the steel main cables 1; the semi-ring cable clamp comprises a clamping portion 2 and a locking portion 3 arranged on both sides of the clamping portion 2, a U-shaped spring sealing strip 5 is embedded in the locking portion 3, a steel wire rope 6 is wound around the outer side of the steel main cable 1, and the airbag sealing ring 9 is arranged between the inner hole surfaces at both ends of the clamping portion 2 and the steel wire rope 6, and between the end surface 20 of the U-shaped spring sealing strip 5 and the steel wire rope 6.

[0053] The outer circular surface and conical surface at both ends of the clamping part 2, the conical surface of the airbag sealing ring 9 and the outer circular surface of the wire rope 6 are covered with a winding layer 7, and the winding layer 7 is wound around the outer side of the locking part 3. The outer surface of the winding layer 7 is provided with an annular fastening belt 8.

[0054] The airbag sealing ring 9 includes a high compression portion 10, a low compression portion 11 and a connecting portion 12 which are connected in sequence. A first airbag cavity 13 is arranged in the high compression portion 10, a second airbag cavity 14 is arranged in the low compression portion 11, and a vent hole 15 is arranged on the connecting portion 12. The first airbag cavity 13, the second airbag cavity 14 and the vent hole 15 are connected.

[0055] The present invention provides two half-ring cable clamps to form a circular ring-shaped cable clamp wrapped around the outside of the steel main cable 1, thereby constraining the steel main cable 1 and facilitating subsequent suspension construction of the steel main cable 1 using the cable clamp.

[0056] When in use, the airbag sealing ring 9 is provided to facilitate sealing the gap between the semi-ring cable clamp and the steel main cable 1, and the airbag sealing ring 9 is located inside the semi-ring cable clamp to avoid contact with air and rainwater to the greatest extent, effectively preventing the rubber from fatigue, bulging or even rupture.

[0057] During actual construction, by setting the U-shaped spring sealing strip 5, it is convenient to seal the planar connection of the two half-ring cable clamps, and the U-shaped spring sealing strip 5 adopts a rubber strip, which is convenient for elastic compression when tightening the first fixing bolts 17 on the two locking parts 3, so as to achieve sealing of the gap between the planes of the two locking parts 3, and the operation is reliable and stable; in addition, since the U-shaped spring sealing strip is installed in the positioning groove of the docking plane of the two half-ring cable clamps, when the two half-ring cable clamps are in a certain parallel or inclined misalignment, the compressed U-shaped spring sealing strip can still be clamped in the positioning groove to meet the sealing requirements, and the use effect is good.

[0058] It should be noted that the wrapping layer 7 is preferably a rubber waterproof sealing wrapping tape, which has the advantage of isolating the air, effectively preventing dust and rainwater from entering the semi-ring cable clamp, and avoiding rainwater from affecting the service life of the steel main cable 1 and the airbag sealing ring 9.

[0059] In this embodiment, the locking parts 3 of the two half-ring cable clamps are connected by a first fixing bolt 17 .

[0060] During actual construction, an outer shell 4 is provided on the outer side of the locking portion 3, and the edges of the two end faces of the outer shell 4 are abutted against the outer surface of the clamping portion 2. A plurality of through holes for the first fixing bolts 17 to pass through are provided inside the locking portion 3 and on the outer shell 4. The through holes are located on the inner side of the U-shaped sealing strip 5, so that the U-shaped sealing strip 5 can seal the gap between the two outer shells 4.

[0061] In this embodiment, the high compression portion 10 is located between the end face 20 of the U-shaped spring sealing strip 5 and the steel wire rope 6, the low compression portion 11 is located between the inner hole surfaces at both ends of the clamping portion 2 and the steel wire rope 6, and the connecting portion 12 is located between the winding layer 7 and the steel wire rope 6; the lower surfaces of the high compression portion 10 and the low compression portion 11 are both arc concave-convex surfaces 16, and the cross-section of the connecting portion 12 is a trapezoid.

[0062] In actual use, the cross-sections of multiple steel main cables 1 in actual construction are approximately circular. After the steel wire rope 6 is wrapped around the steel main cable 1, the outer surface is a plurality of continuous arc-shaped arch surfaces. By arranging an arc concave-convex surface 16 on the lower surface of the inner hole of the airbag sealing ring 9, it is convenient to increase the contact surface between the airbag sealing ring 9 and the steel wire rope 6, so as to better adapt to the uneven outer surface of the steel wire rope 6. By arranging a compressible airbag sealing ring 9, the steel main cable 1 can be staggered and sealed in a 360° circumferential direction.

[0063] In this embodiment, the height of the first airbag cavity 13 is greater than the height of the second airbag cavity 14 .

[0064] In actual use, the left side section of the airbag sealing ring 9 is conical, which is convenient for compressing its height. By setting the first airbag cavity 13 and the second airbag cavity 14, it is convenient to squeeze the airbag sealing ring 9 to reduce its height, so that it can be inserted between the inner hole surface of the clamping part 2 and the steel wire rope 6, so that the airbag sealing ring 9 can be clamped in the inner holes of the two end surfaces of the clamping part 2, and then gas is delivered to the first airbag cavity 13 and the second airbag cavity 14 to increase the height of the airbag sealing ring 9 and increase the pressure in the airbag sealing ring 9 at the same time, so that it can simultaneously generate relative forces with the inner hole surface of the clamping part 2 and the steel wire rope 6, eliminating the gap between the three, and has strong practicality.

[0065] In this embodiment, Figures 7 to 9 As shown, the U-shaped spring sealing strip 5 is an internal hollow structure, exhaust holes 21 are opened on both sides of the U-shaped spring sealing strip 5, and the end face 20 of the U-shaped spring sealing strip 5 is an arc surface adapted to the outer circumferential surface of the high compression portion 10, that is, the end face 20 of the U-shaped spring sealing strip 5 is butted against the outer circumference of the high compression portion 10 of the airbag sealing ring 9.

[0066] In actual use, in order to ensure the normal operation of the bridge, the rubber sealing assembly is replaced when the fastening bolts of the half-ring cable clamp are not loosened. The U-shaped spring sealing strip 5 is set as a compressible spring type with a hollow interior. When replaced, different layers of U-shaped spring sealing strips 5 can be matched according to the spacing between the two half-ring cable clamps after compression. By setting the exhaust hole 21, it is convenient to discharge the air in the U-shaped spring sealing strip 5 through the exhaust hole 21 when the U-shaped spring sealing strip 5 is squeezed; at the same time, the airbag sealing ring 9 is also a hollow structure. After the high compression part 10 of the airbag sealing ring 9 is compressed, its outer diameter is smaller than the inner hole diameter of the clamping part 2, so the airbag sealing ring 9 can be easily replaced, which provides a reliable guarantee for the maintenance and replacement of the rubber sealing assembly under special circumstances.

[0067] In this embodiment, the number of the vent holes 15 on the airbag sealing ring 9 is 1-3, and they are evenly arranged circumferentially on the oblique conical surface of the connecting portion 12 .

[0068] like Figure 5 As shown, in this embodiment, the inner hole surfaces on both sides of the locking portion 3 are provided with first grooves 19 for inserting the airbag sealing ring 9, and the outer circumferential surface of the clamping portion 2 is provided with second grooves for the annular fastening belt 8 to be hooped.

[0069] In actual use, the ends of the airbag sealing ring 9 are inserted into the first grooves 19 on the inner hole surfaces on both sides of the locking portion 3, so that the end surface 20 of the U-shaped sealing strip 5 is completely in contact with the corresponding outer circular surface of the airbag sealing ring 9, and then the two are bonded together with an adhesive to achieve overall sealing.

[0070] like Fig.10 The construction method of an integral rubber sealing assembly of a suspension bridge cable clamp shown in the figure comprises the following steps:

[0071] Step 1, constrain the steel main cable and install the half-loop cable clamp: wrap the steel wire rope 6 around the outer surface of the steel main cable 1, then sleeve the clamping parts of the two half-loop cable clamps on the outside of the steel wire rope 6, and then adjust the first fixing bolts 17 on the two locking parts 3 to the first tightening stage, that is, the spacing between the two half-loop cable clamps is adapted to the thickness of the U-shaped spring sealing strip 5, so that the two half-loop cable clamps are clamped on the steel wire rope 6, and then embed the U-shaped spring sealing strip 5 into the positioning groove between the locking parts 3 close to each other on the two half-loop cable clamps.

[0072] During actual construction, the winding width of the steel wire rope 6 is at least 300 mm greater than the width of the semi-ring clamp, the width direction of the steel wire rope 6 and the width direction of the semi-ring clamp are consistent with the extension direction of the steel main cable 1, and only one layer of steel wire rope 6 is wound.

[0073] Step 2: Fasten the main steel cable and seal the half ring cable clamp:

[0074] Step 201, installing the airbag sealing ring: squeeze the airbag sealing ring 9 so that the gas in the first airbag cavity 13 and the second airbag cavity 14 is discharged outward through the vent 15, and then embed the airbag sealing ring 9 between the inner hole surface of the clamping part 2 of the semi-ring cable clamp and the steel wire rope 6, and then adjust the first fixing bolts 17 on the two locking parts 3 to the second tightening stage, so that the semi-ring cable clamp squeezes the airbag sealing ring 9 between the inner hole surface of the clamping part 2 and the steel wire rope 6, and at the same time squeezes the U-shaped spring sealing strip 5 in the positioning groove between the two locking parts 3, and makes the end face 20 of the U-shaped spring sealing strip 5 close to the outer circular surface of the first airbag 13 of the airbag sealing ring 9, and bonded together with an adhesive.

[0075] Step 202, increase the internal pressure of the airbag sealing ring: use a booster pump to deliver gas to the first airbag cavity 13 and the second airbag cavity 14 of the airbag sealing ring 9 through the vent 15, so that the pressure in the first airbag cavity 13 and the second airbag cavity 14 increases, and then increase the height of the airbag sealing ring 9, so that the airbag sealing ring 9 exerts pressure on the inner hole surface of the clamping part 2 and the steel wire rope 6, eliminates the gap between the inner hole of the clamping part 2 and the steel wire rope 6, and then seals the vent 15 with a rubber sealing plug.

[0076] During actual construction, in step 201, the airbag sealing ring 9 is initially generally in the shape of a strip. First, both end faces of the airbag sealing ring 9 are cut into 45-degree inclined surfaces, and then the airbag sealing ring 9 is wrapped on the outer circular surface of the steel wire rope 6, and the cut ends of the airbag sealing ring 9 are butt-jointed and bonded with an adhesive to form a complete annular airbag sealing ring 9.

[0077] When the number of vent holes 15 is greater than 1, first use rubber sealing plugs to seal all other vent holes 15, leaving only any one vent hole 15 for connecting the booster pump; when the pressure in the first airbag cavity 13 and the second airbag cavity 14 is slightly greater than the standard atmospheric pressure, that is, when the pressure in the first airbag cavity 13 and the second airbag cavity 14 is positive pressure, stop using the booster pump and use the rubber sealing plug to seal the vent hole 15.

[0078] Step three, fix the semi-ring cable clamp to form an integral rubber sealing assembly: cover the outer circular surface and conical surface of the clamping part 2, the oblique cone surface of the airbag sealing ring 9 and the outer surface of the wire rope 6 located outside the airbag sealing ring 9 with the winding layer 7, and then install the annular fastening belt 8 on the outer surface of the winding layer 7 located above the clamping part 2, and fix the annular fastening belt 8 by the second fastening bolt 18, so that the semi-ring cable clamp, the airbag sealing ring 9 and the U-shaped spring sealing strip 5 become a whole to form an integral rubber sealing assembly.

[0079] In actual use, the annular fastening belt 8 is an annular thin-walled steel plate belt. After the annular fastening belt 8 is sleeved on the winding layer 7, the two ends of the annular fastening belt 8 are fixed by the second fastening bolts 18, so that it can constrain the winding layer 7, avoid the generation of gaps, and realize and improve the sealing of the semi-ring cable clamp.

[0080] The present invention is aimed at suspension bridges. By fixing half-ring cable clamps on the steel main cable 1 in steps to form an integral rubber sealing assembly, the inner hole of the cable clamp and the internal steel main cable 1 are effectively prevented from rusting, and the service life of the steel main cable 1 and the integral rubber sealing assembly is also extended.

[0081] The invention is also innovative in that the rubber sealing assembly can be replaced while ensuring the normal operation of the bridge and the half-cable clamp fastening bolts are not loosened, thus providing a reliable guarantee for the maintenance and replacement of the rubber sealing assembly under special circumstances.

[0082] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An integral rubber sealing assembly for a cable clamp of a suspension bridge, wherein a plurality of steel main cables (1) are arranged on the suspension bridge, characterized in that: It comprises two half-loop cable clamps clamped on the outside of the steel main cable (1) and an airbag sealing ring (9) embedded between the inner hole surfaces of the two ends of the half-loop cable clamps and the steel main cable (1); The semi-loop cable clamp comprises a clamping portion (2) and locking portions (3) arranged on both sides of the clamping portion (2); a U-shaped spring sealing strip (5) is embedded in the gap between the two locking portions (3) close to each other; a steel wire rope (6) is wound around the outer side of the steel main cable (1); and the airbag sealing ring (9) is arranged between the inner hole surfaces at both ends of the clamping portion (2) and the steel wire rope (6) and between the end surface (20) of the U-shaped spring sealing strip (5) and the steel wire rope (6); The outer circumferential surfaces and conical surfaces at both ends of the clamping portion (2), the conical surface of the airbag sealing ring (9) and the outer circumferential surface of the steel wire rope (6) are covered with a wrapping layer (7), the wrapping layer (7) is wrapped around the outer side of the locking portion (3), and the outer surface of the wrapping layer (7) is provided with an annular tightening belt (8); The airbag sealing ring (9) comprises a high compression portion (10), a low compression portion (11) and a connecting portion (12) which are connected in sequence; a first airbag cavity (13) is arranged in the high compression portion (10); a second airbag cavity (14) is arranged in the low compression portion (11); a vent hole (15) is arranged on the connecting portion (12); the first airbag cavity (13), the second airbag cavity (14) and the vent hole (15) are connected.

2. An integral rubber sealing assembly for a suspension bridge cable clamp according to claim 1, characterized in that: The locking parts (3) of the two half-loop cable clamps are connected via a first fixing bolt (17).

3. The integrated rubber sealing assembly for a suspension bridge cable clamp according to claim 1, characterized in that: The high compression portion (10) is located between the end surface (20) of the U-shaped spring sealing strip (5) and the steel wire rope (6), the low compression portion (11) is located between the inner hole surfaces at both ends of the clamping portion (2) and the steel wire rope (6), and the connecting portion (12) is located between the winding layer (7) and the steel wire rope (6); The lower surfaces of the high compression portion (10) and the low compression portion (11) are both arc-shaped concave-convex surfaces (16), and the cross section of the connecting portion (12) is a trapezoid.

4. The integrated rubber sealing assembly for a suspension bridge cable clamp according to claim 1, characterized in that: The height of the first airbag cavity (13) is greater than the height of the second airbag cavity (14).

5. The integrated rubber sealing assembly for a suspension bridge cable clamp according to claim 3, characterized in that: The number of the vent holes (15) is 1-3, and they are evenly circumferentially arranged on the oblique conical surface of the connecting portion (12).

6. The integrated rubber sealing assembly for a suspension bridge cable clamp according to claim 1, characterized in that: The inner hole surfaces on both sides of the locking portion (3) are provided with first grooves (19) for inserting the airbag sealing ring (9), and the outer circumferential surface of the clamping portion (2) is provided with second grooves for the hoop of the annular fastening belt (8).

7. The integrated rubber sealing assembly for a suspension bridge cable clamp according to claim 1, characterized in that: The U-shaped spring sealing strip (5) is an internal hollow structure, exhaust holes (21) are provided on both sides of the U-shaped spring sealing strip (5), and the end surface (20) of the U-shaped spring sealing strip (5) is an arc surface adapted to the outer cylindrical surface of the high compression portion (10).

8. A construction method for the integrated rubber sealing assembly of the suspension bridge cable clamp according to claim 1, characterized in that: The method comprises the following steps: Step 1, restraining the steel main cable and installing the half-loop cable clamp: winding the steel wire rope (6) on the outer surface of the steel main cable (1), then sleeve the clamping parts of the two half-loop cable clamps on the outside of the steel wire rope (6), and then adjust the first fixing bolts (17) on the two locking parts (3) to the first tightening stage, that is, the spacing between the two half-loop cable clamps is adapted to the thickness of the U-shaped spring sealing strip (5), so that the two half-loop cable clamps are clamped on the steel wire rope (6), and then embed the U-shaped spring sealing strip (5) into the positioning groove between the locking parts (3) close to each other on the two half-loop cable clamps; Step 2: Fasten the main steel cable and seal the half ring cable clamp: Step 201, installing the airbag sealing ring: squeeze the airbag sealing ring (9) so that the gas in the first airbag cavity (13) and the second airbag cavity (14) is discharged outward through the vent hole (15), and then embed the airbag sealing ring (9) between the inner hole surface of the clamping part (2) of the semi-circular cable clamp and the steel wire rope (6), and then adjust the first fixing bolts (17) on the two locking parts (3) to the second tightening stage, so that the semi-circular cable clamp squeezes the airbag sealing ring (9) between the inner hole surface of the clamping part (2) and the steel wire rope (6), and at the same time squeezes the U-shaped spring sealing strip (5) in the positioning groove between the two locking parts (3), and makes the end face (20) of the U-shaped spring sealing strip (5) tightly attached to the outer circular surface of the first airbag (13) of the airbag sealing ring (9); Step 202, increasing the internal pressure of the airbag sealing ring: using a booster pump to deliver gas to the first airbag cavity (13) and the second airbag cavity (14) of the airbag sealing ring (9) through the vent hole (15), so that the pressure in the first airbag cavity (13) and the second airbag cavity (14) is increased, and then the height of the airbag sealing ring (9) is increased, so that the airbag sealing ring (9) exerts pressure on the inner hole surface of the clamping part (2) and the steel wire rope (6), eliminating the gap between the inner hole of the clamping part (2) and the steel wire rope (6), and then the vent hole (15) is sealed with a rubber sealing plug; Step 3, fix the semi-ring cable clamp to form an integral rubber sealing assembly: the outer circumferential surface and conical surface of the clamping portion (2), the oblique conical surface of the airbag sealing ring (9) and the outer surface of the steel wire rope (6) located outside the airbag sealing ring (9) are covered with a winding layer (7), and then an annular fastening belt (8) is installed on the outer surface of the winding layer (7) located above the clamping portion (2), and the annular fastening belt (8) is fixed by a second fastening bolt (18), so that the semi-ring cable clamp, the airbag sealing ring (9) and the U-shaped spring sealing strip (5) become a whole to form an integral rubber sealing assembly.

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