Flexible seal for cable clamp and suspension bridge cable clamp

Abstract

The utility model relates to the technical field of suspension bridge, specifically disclose a flexible sealing strip for cable clamp and suspension bridge cable clamp. The flexible sealing strip is arranged between the circumferential butt joint of adjacent cable clamp half body, the flexible sealing strip has at least one compression deformation unit in the compression direction, the compression deformation unit can produce the inside folding compression deformation at the both sides waist of the compression direction when being compressed. The compression deformation unit of the utility model basically does not produce the epitaxial deformation of sealing width direction in the compression deformation, is favorable to the sealing surface of cable clamp circumferential butt joint place as the reference to design the compression edge of flexible sealing strip, and further ensures the structure stability of flexible sealing strip arrangement on the cable clamp, can also realize reliable sealing performance, can effectively avoid the position interference between the both sides waist of flexible sealing strip after compression deformation and the adjacent structure, long -term effect is good, has the technical features such as easy to design, easy to form, structure stability.

Description

Technical Field

[0001] This utility model relates to the field of suspension bridge technology, specifically a flexible sealing strip for cable clamps and a suspension bridge cable clamp. Background Technology

[0002] In suspension bridge structures, the cable clamp is a crucial structure that connects the main cable, the core of the load-bearing structure, to the bridge deck via suspenders / cables. It is fixed to the main cable supported by the cable saddle using a gripping, friction-increasing, and anti-slip structure. Therefore, as... Figure 1 As shown, the cable clamp is composed of a first cable clamp half 6 and a second cable clamp half 7, which are formed by multiple screw assemblies 9 connected circumferentially to create a cable hole 8. Specifically, the first cable clamp half 6 has pressure-bearing parts for threading the screw assemblies 9 at both ends of its circumferential direction; the second cable clamp half 7 also has pressure-bearing parts for threading the screw assemblies 9 at both ends of its circumferential direction. During pre-tightening installation on the main cable, the first cable clamp half 6 and the second cable clamp half 7 are circumferentially closed to form a cable hole 8 through which the main cable can be threaded. At this time, a circumferential butt joint is formed between the adjacent pressure-bearing parts of the first cable clamp half 6 and the second cable clamp half 7 that are connected circumferentially. Each corresponding screw hole at this circumferential butt joint is used to thread the corresponding screw assembly 9. The pre-tightening force of the screw assembly 9 causes the circumferentially connected first cable clamp half 6 and the second cable clamp half 7 to clamp tightly on the main cable, increasing the contact friction and achieving an anti-slip effect.

[0003] Based on the aforementioned circumferentially connected assembly structure of the cable clamp halves, and considering the technical requirements for anti-slip installation of cable clamps and corrosion protection of the main cable in suspension bridge structures, the cable clamps installed on the main cable must achieve gap sealing to prevent rainwater, dust, and other corrosive substances from seeping into the cable clamp interior. Specifically, the sealing of the circumferential joint of the cable clamp is typically achieved by filling the gap with a sealing strip under the preload of the screw assembly, such as... Figure 1 and Figure 2 As shown.

[0004] However, as Figure 2 The sealing strip shown is a solid structure with a rectangular cross-section. Its compressive deformation under pressure is relatively limited, and under large deformation compression, it may exhibit outward bulging and cracking at the sides. Due to inherent tolerances and porosity of the main cable wires in suspension bridges, the circumferential joint gap between the two halves of the cable clamp during construction differs from the theoretical design. Furthermore, the circumferential joint gaps of the cable clamps at different locations along the main cable length may also vary. Therefore, the aforementioned... Figure 2 The solid-core sealing strip shown is not well-suited for cable clamp sealing. To ensure the sealing performance of the cable clamp, a large amount of compression with deformation needs to be applied to the sealing strip at the circumferential joint of the cable clamp to adapt to it. The compressed sealing strip has a high risk of bulging and cracking on both sides of the waist.

[0005] During the applicant's search, a Chinese patent document was found entitled "A Rubber Spring Sealing Strip for Main Cable Clamps of Suspension Bridges," publication number CN 115354574 B, published on February 28, 2025. This technology discloses a pressure-deformable structure with a hollow cross-section and outwardly convex arc-shaped sides, resembling a round lantern. Analysis revealed that when this type of sealing strip is under pressure, its sides undergo outward compression deformation. The deformed portion extends beyond the straight section (i.e., the pressure-bearing edge) that engages with the cable clamp in the sealing width direction, increasing the design technical difficulty of the sealing strip in the sealing width direction. Specifically, if the straight portion of the sealing strip is designed based on the sealing surface at the circumferential joint of the cable clamp, the sealing strip will undergo outward deformation on both sides after being deformed under pressure. This causes the inner and outer outward deformations to exceed the sealing surface at the circumferential joint of the cable clamp, directly interfering with the adjacent structure and easily leading to the risk of breakage and damage. If the outward deformation of the sealing strip on both sides after being deformed under pressure is designed based on the sealing surface at the circumferential joint of the cable clamp, then firstly, the structural dimensions of the straight portion of the sealing strip in the sealing width direction will inevitably be too small, resulting in poor stability of the sealing strip's arrangement on the cable clamp. Secondly, due to the uncertainty of the gap at the circumferential joint of the cable clamp, the structural dimensions of the outward structure on both sides of the sealing strip after being deformed under pressure in the sealing width direction are uncertain. If they are too large, they will interfere with the adjacent structure and lead to the risk of breakage and damage; if they are too small, they will directly lead to insufficient sealing performance.

[0006] In conclusion, given the unique characteristics of suspension bridge cables being installed on the main cable, it is necessary to design a more suitable sealing strip. Utility Model Content

[0007] The technical objective of this utility model is to provide a flexible sealing strip for cable clamps that has good sealing performance after being deformed under pressure, stable arrangement structure, and is easy to design and form, in view of the special characteristics of the cable clamps for suspension bridges installed on the main cable and the shortcomings of the prior art, as well as a suspension bridge cable clamp containing the sealing strip.

[0008] The technical objective of this utility model is achieved through the following technical solution: a flexible sealing strip for cable clamps, wherein the flexible sealing strip is arranged at the circumferential joint between adjacent cable clamp halves; The flexible sealing strip has at least one pressure-deformable unit in the pressure direction; When subjected to pressure, the compression deformation unit can generate inward compression deformation at the waist on both sides in the direction of pressure.

[0009] The above-mentioned technical measures address the unique characteristics of the suspension bridge cable clamps being installed on the main cable. The pressure deformation unit of the flexible sealing strip is designed as a structure inwardly folded and compressed at both sides of the waist when under pressure. This prevents outward deformation in the sealing width direction during pressure deformation, which is beneficial for designing the pressure-bearing edge of the flexible sealing strip based on the sealing surface at the circumferential joint of the cable clamp. This ensures the structural stability of the sealing strip arrangement on the cable clamp, achieves reliable sealing performance, and effectively avoids positional interference between the two sides of the flexible sealing strip and adjacent structures after pressure deformation. It has good long-term effectiveness and features easy design, easy molding, and good stability.

[0010] As one of the preferred technical solutions, the pressure deformation unit of the flexible sealing strip has a first pressure edge and a second pressure edge arranged at intervals in the pressure direction, and a first compression deformation edge and a second compression deformation edge arranged at intervals in the sealing width direction, located between the first pressure edge and the second pressure edge, which can generate inward compression deformation when compressed. The first pressure edge, the first compression deformation edge, the second pressure edge and the second compression deformation edge form a closed structure and a compression deformation corridor hole along the longitudinal direction of the seal.

[0011] The aforementioned technical measures enable the flexible sealing strip's pressure-deformation unit to form a hollow structure with inward compression deformation at both sides of the waist when under pressure. This results in better deformable flexibility and a larger amount of compressible deformation under pressure. It can not only effectively adapt to the circumferential joint error variation of the cable clamp and provide excellent sealing performance, but also prevents outward deformation in the sealing width direction during pressure deformation (the micro-outward deformation of the material itself due to compression is negligible), thus fully absorbing any possible outward deformation through the inward compression deformation structure.

[0012] Furthermore, the first and second compression deformation sides of the pressure deformation unit are symmetrical in the sealing width direction; The compression deformation edge has multiple folds that are sequentially bent at acute angles in the compression direction, and among these folds constituting the compression deformation edge, at least two adjacent folds form an inward fold structure at the waist in the compression direction.

[0013] Furthermore, the compression deformation edge has two folded edges with acute angles in the compression direction, and the folds of these two folded edges form an inward fold structure at the waist in the compression direction.

[0014] Furthermore, the compression deformation edge has four folds that are sequentially bent at acute angles in the compression direction, and the folds of two sets of adjacent folds in these four folds form an inward fold structure at the waist in the compression direction.

[0015] The above-mentioned technical measures make the waist of the compression deformation unit of the flexible sealing strip have a V-shaped or W-shaped inward folding structure, thereby reliably ensuring that the flexible sealing strip under pressure deformation produces stable inward folding compression deformation and does not undergo outward deformation.

[0016] Furthermore, the angle between two adjacent folds of the compression deformation edge is rounded. This technical measure not only reliably achieves compression deformation but also helps ensure the stability and long-term stress resistance of the flexible sealing strip.

[0017] As one of the preferred technical solutions, the flexible sealing strip is a rubber structure; The wall thickness of each side of the compression deformation corridor forming the compression deformation unit is 3-5 mm.

[0018] The flexible sealing strips described above possess excellent flexibility, weather resistance, and sealing performance, meeting the sealing performance technical requirements of the cable clamp within a specified period.

[0019] As one of the preferred technical solutions, the flexible sealing strip has multiple pressure-deformation units arranged sequentially and connected as a whole in the pressure direction; Adjacent compression deformation units share the same compression edge.

[0020] The above-mentioned technical measures form multiple compressible deformation units that can be folded inward and compressed along the pressure direction of a flexible sealing strip. The large amount of compressibility can effectively meet the different changes in the circumferential joint of the cable clamp due to errors, which is conducive to ensuring the sealing performance of the cable clamp.

[0021] A suspension bridge cable clamp has a first cable clamp half and a second cable clamp half that are circumferentially connected and form a cable hole; The aforementioned flexible sealing strips are arranged at the circumferential joint between the first cable clamp half and the second cable clamp half. Under the locking of the multiple screw assemblies installed at the circumferential joint, the flexible sealing strip undergoes inward compression deformation at the waist of the inner and outer sides of the pressure deformation unit, forming a radial seal on the circumferential joint.

[0022] The above-mentioned cable clamp molding structure includes the above-mentioned flexible sealing strip at the circumferential joint, thus possessing the technical advantages of the above-mentioned flexible sealing strip, making the cable clamp's sealing structure stable, its sealing performance excellent, and its sealing effect long-term good.

[0023] Furthermore, both ends of the pressure-deformed unit of the flexible sealing strip are filled with sealant to seal the corresponding compression deformation corridor holes. This technical measure targets the hollow structure of the aforementioned flexible sealing strip. To ensure the sealing performance of the internal structure of the flexible sealing strip and prevent water leakage, sealant is filled at both ends of the flexible sealing strip to seal the corresponding compression deformation corridor holes. This results in excellent sealing effect on the hollow structure of the flexible sealing strip, without increasing the sealing technical difficulty due to changes in the hollow structure morphology of the flexible sealing strip, and is easy to implement and maintains stability.

[0024] The beneficial technical effects of this utility model are as follows: Addressing the unique characteristics of cable clamps installed on the main cable of suspension bridges, the above-mentioned technical measures design the compression deformation unit of the flexible sealing strip arranged at the circumferential joint of the cable clamp as a structure that undergoes inward compression deformation at both sides of the waist during compression. This prevents significant outward deformation in the sealing width direction during compression deformation. This is particularly prominent for the flexible sealing strip with the compression deformation corridor structure, which facilitates the design of the compression edge of the flexible sealing strip based on the sealing surface at the circumferential joint of the cable clamp. This ensures both the structural stability of the flexible sealing strip arrangement on the cable clamp and reliable sealing performance. It also effectively prevents positional interference between the two sides of the flexible sealing strip and adjacent structures after compression deformation, resulting in good long-term effectiveness. The cable clamp incorporating the above-mentioned flexible sealing strip possesses the technical characteristics of stable sealing structure, excellent sealing performance, and good long-term sealing effectiveness. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a structure of an existing suspension bridge cable clamp.

[0026] Figure 2 for Figure 1 A schematic diagram of the solid sealing strip in the diagram.

[0027] Figure 3 This is a schematic diagram of the structure of the flexible sealing strip of this utility model.

[0028] Figure 4 This is a schematic diagram of one structure of the cable clamp of this utility model.

[0029] The symbols in the diagram have the following meanings: 1—First pressure-bearing edge; 2—Second pressure-bearing edge; 3—First compression deformation edge; 31—First inner fold edge; 32—Second inner fold edge; 4—Second compression deformation edge; 41—Third inner fold edge; 42—Fourth inner fold edge; 5—Compression deformation corridor hole; 6—First cable clamp half; 7—Second cable clamp half; 8—Cable hole; 9—Screw assembly; X—Sealing width direction; Y—Pressure direction; Z—Sealing longitudinal direction. Detailed Implementation

[0030] This utility model relates to the field of suspension bridge technology, specifically a flexible sealing strip for cable clamps, and a suspension bridge cable clamp including the flexible sealing strip. The main technical solution of this utility model will be described in detail below with reference to several embodiments. Embodiment 1 is illustrated in conjunction with the accompanying drawings—that is… Figure 3 and Figure 4 The technical solution of this utility model is clearly and thoroughly explained; although other embodiments are not shown in separate drawings, their main structures can still be referred to the drawings of Embodiment 1.

[0031] It should be noted that the accompanying drawings of this utility model are schematic, and unnecessary details have been simplified to clarify the technical purpose of this utility model, so as to avoid obscuring the technical solution contributed by this utility model to the prior art. In addition, the expressions such as "about" and "basically" regarding quantity or fit relationship in the following text mean that reasonable assembly errors and processing errors are allowed in the industry, and do not literally describe absolute quantity or fit relationship.

[0032] Example 1 See Figure 4 As shown, the cable clamp of this utility model is a pin-connected structure, comprising a first cable clamp half 6 located on the upper side, a second cable clamp half 7 located on the lower side, and multiple screw assemblies 9 that connect the first cable clamp half 6 and the second cable clamp half 7 in the circumferential direction to form a whole, enclosing a cable hole 8. The main body outline of the first cable clamp half 6 is C-shaped, with extended, platform-shaped pressure-bearing portions at both circumferential ends for mounting the screw assemblies 9. The main body outline of the second cable clamp half 7 is also C-shaped, with extended, platform-shaped pressure-bearing portions at both circumferential ends for mounting the screw assemblies 9; the bottom center of the second cable clamp half 7 has a downwardly protruding lug for connecting the sling / rod. During pre-tightening installation on the main cable of the suspension bridge, the first cable clamp half 6 and the second cable clamp half 7 are aligned vertically and circumferentially to form a cable hole 8 through which the main cable can be inserted. At this time, two sets of circumferential butt joints are formed between the first cable clamp half 6 and the second cable clamp half 7 in a left-right arrangement. Each set of circumferential butt joints is formed between adjacent bearing parts of the circumferential butt joint. Multiple sets of one-to-one corresponding screw holes are formed on the inner side of the circumferential butt joint. Each one-to-one corresponding screw hole is used to insert the corresponding screw assembly 9. The pre-tightening force of the screw assembly 9 causes the circumferentially butt jointed first cable clamp half 6 and second cable clamp half 7 to hug the main cable, increasing the contact friction and achieving an anti-slip effect. The outer side of the circumferential butt joint serves as a sealing part and is used to arrange the following... Figure 3 The flexible sealing strip shown in the diagram blocks the radial intrusion of external corrosive substances into the circumferential joint.

[0033] Therefore, through Figure 4It can be seen that the flexible sealing strip of this utility model is arranged at the circumferential joint between adjacent cable clamp halves.

[0034] See Figure 3 As shown, the flexible sealing strip of this utility model corresponds to Figure 4 The suspension bridge cable clamp structure shown is a three-dimensional structure, having a sealing width direction X corresponding to the width direction of the sealing surface of the circumferential butt joint of the cable clamp (i.e., the joint width direction), a compression direction Y corresponding to the locking direction of the circumferential butt joint of the cable clamp (i.e., the joint height direction), and a sealing longitudinal direction Z corresponding to the length direction of the circumferential butt joint of the cable clamp. The sealing width direction X, the compression direction Y, and the sealing longitudinal direction Z constitute the three-dimensional coordinates of the flexible sealing strip of this utility model. For clarity in the following description, the flexible sealing strip of this utility model will be described in detail in conjunction with the three-dimensional coordinates.

[0035] See Figure 3 As shown, the flexible sealing strip of this utility model is a rubber structure, which has two pressure deformation units that are connected as a whole in the pressure direction Y.

[0036] Each pressure-deformation unit is a hollow structure, having a first pressure-bearing edge 1 and a second pressure-bearing edge 2 spaced apart in the pressure direction Y, and a first compression deformation edge 3 and a second compression deformation edge 4 spaced apart in the sealing width direction X, located between the first pressure-bearing edge 1 and the second pressure-bearing edge 2. The first pressure-bearing edge 1, the first compression deformation edge 3, the second pressure-bearing edge 2, and the second compression deformation edge 4 form a closed structure with a compression deformation corridor 5 along the longitudinal direction Z of the seal. The first pressure-bearing edge 1 and the second pressure-bearing edge 2 of the pressure-deformation unit are both straight structures; that is, the exposed top surface of the first pressure-bearing edge 1 is a flat planar structure, and the exposed bottom surface of the second pressure-bearing edge 2 (if present, in this embodiment, this pressure-bearing edge is located in the middle of the flexible sealing strip; if absent) is a flat planar structure. The first compression deformation edge 3 has two folded edges in the compression direction Y, which are sequentially bent at acute angles – the first inner folded edge 31 and the second inner folded edge 32. The folds of these two folded edges form an inward fold structure at the waist of the compression direction Y, so that the cross-section of the compression deformation unit is a horizontal V-shape. Similarly, the second compression deformation edge 4 has two folded edges in the compression direction Y, which are sequentially bent at acute angles – the third inner folded edge 41 and the fourth inner folded edge 42. The folds of these two folded edges form an inward fold structure at the waist of the compression direction Y, so that the cross-section (compression direction Y) of the compression deformation unit is a horizontal V-shape. As the best fit, the first compression deformation edge 3 and the second compression deformation edge 4 are basically symmetrical in the sealing width direction X. In this way, the compression deformation unit forms a waist-tight structure in the cross-section (compression direction Y), which can generate inward compression deformation along the compression direction Y when compressed. Based on this waist-slimming structure, the cross-section (compression direction Y) of the compression deformation corridor 5 of the compression deformation unit is an I-shaped straight slide rail structure.

[0037] Typically, to meet the requirements of the stress-bearing technology, the wall thickness of each side of the compression deformation corridor 5 constituting the compression deformation unit is in the range of 3 to 5 mm. In addition, in order to reduce the structural stress between adjacent sides and facilitate extrusion molding through a mold, the mating angle between adjacent sides is usually a rounded corner structure, especially the acute angle between the two adjacent folded edges of the first compression deformation edge 3 / second compression deformation edge 4, which requires rounded corner molding.

[0038] like Figure 3 As shown, the flexible sealing strip of this invention has two interconnected pressure-bearing deformation units in the pressure direction Y. Therefore, a transitional connection structure is necessary between the upper and lower pressure-bearing deformation units, which is the shared pressure-bearing edge between them. Specifically, the second pressure-bearing edge 2 of the upper pressure-bearing deformation unit needs to serve as the transitional connection structure for the lower pressure-bearing deformation unit, thus forming the first pressure-bearing edge of the lower pressure-bearing deformation unit, and the bottom surface of the second pressure-bearing edge of the lower pressure-bearing deformation unit is exposed. It can be seen that when the flexible sealing strip has multiple sequentially arranged and interconnected pressure-bearing deformation units in the pressure direction Y, adjacent pressure-bearing deformation units share the same pressure-bearing edge.

[0039] See Figure 4 As shown above, Figure 3 The flexible sealing strips shown are arranged at each circumferential joint between the first clamp half 6 and the second clamp half 7. The first pressure-bearing edge of the upper pressure-bearing deformation unit of the flexible sealing strip is bonded and fixed to the corresponding sealing surface of the first clamp half 6, and the second pressure-bearing edge of the lower pressure-bearing deformation unit of the flexible sealing strip is bonded and fixed to the corresponding sealing surface of the second clamp half 7. Under the locking of the multiple screw assemblies 9 inserted at the circumferential joint, the inner and outer sides of each pressure-bearing deformation unit undergo inward compression deformation, forming a radial seal on the circumferential joint, thus basically preventing outward deformation in the sealing width direction X during compression deformation.

[0040] like Figure 4 The cable clamp shown, when the flexible sealing strip is assembled and deformed under pressure, fills both ends of each pressure deformation unit with sealant. This sealant can block the ends of the corresponding compression deformation holes 5 during the compression deformation of the flexible sealing strip, preventing water leakage and the intrusion of corrosive substances into the interior of the flexible sealing strip.

[0041] Of course, the above-mentioned sealant can also be filled after the compression deformation of the flexible sealing strip is completed, but this is not conducive to the sealant fully seeping and sealing in the corresponding compression deformation cavity 5 of the flexible sealing strip.

[0042] Example 2 The cable clamp of this utility model is a pin-connected structure, comprising a first cable clamp half located on the upper side, a second cable clamp half located on the lower side, and multiple screw assemblies that connect the first and second cable clamp halves circumferentially to form a cable hole. The main body of the first cable clamp half is C-shaped, with extended, platform-shaped pressure-bearing portions at both circumferential ends for mounting the screw assemblies. The main body of the second cable clamp half is also C-shaped, with extended, platform-shaped pressure-bearing portions at both circumferential ends for mounting the screw assemblies; the bottom center of the second cable clamp half has a downwardly protruding lug for connecting the sling / rod. During the pre-tightening installation on the main cable of the suspension bridge, the first and second cable clamp halves are aligned vertically to form a cable hole through which the main cable can be inserted. At this time, two sets of circumferential butt joints are formed between the first and second cable clamp halves in the circumferential direction. Each set of circumferential butt joints is formed between adjacent pressure-bearing parts that are circumferentially butted together. Multiple sets of one-to-one corresponding screw holes are formed on the inner side of the circumferential butt joint. Each one-to-one corresponding screw hole is used to insert the corresponding screw assembly. The pre-tightening force of the screw assembly makes the first and second cable clamp halves that are circumferentially butted together hug the main cable, increasing the contact friction and achieving an anti-slip effect. The outer side of the circumferential butt joint serves as a sealing part and is used to arrange flexible sealing strips to block the radial intrusion of external corrosive substances into the circumferential butt joint.

[0043] Therefore, the flexible sealing strip of this utility model is arranged at the circumferential joint between adjacent cable clamp halves.

[0044] The flexible sealing strip of this utility model is a three-dimensional structure corresponding to the cable clamp structure of a suspension bridge. It has a sealing width direction X corresponding to the width direction (i.e., the joint width direction) of the sealing surface of the circumferential butt joint of the cable clamp, a pressure direction Y corresponding to the locking direction (i.e., the joint height direction) of the circumferential butt joint of the cable clamp, and a sealing longitudinal direction Z corresponding to the length direction of the circumferential butt joint of the cable clamp. The sealing width direction X, the pressure direction Y, and the sealing longitudinal direction Z constitute the three-dimensional coordinates of the flexible sealing strip of this utility model. For clarity in the following description, the flexible sealing strip of this utility model will be described in detail in conjunction with the three-dimensional coordinates.

[0045] The flexible sealing strip of this utility model is a rubber structure, which has two pressure deformation units that are connected as a whole in the pressure direction Y.

[0046] Each compression deformation unit is of a hollow structure, having a first compression edge and a second compression edge arranged at intervals in the compression direction Y, and a first compression deformation edge and a second compression deformation edge arranged at intervals in the sealing width direction X and located between the first compression edge and the second compression edge. The first compression edge, the first compression deformation edge, the second compression edge and the second compression deformation edge enclose a closed compression deformation gallery hole extending along the longitudinal sealing direction Z. Wherein, the first compression edge and the second compression edge of the compression deformation unit are each of a flat structure, which can be simply understood as that the exposed top surface of the first compression edge is a flat planar structure, and the exposed bottom surface of the second compression edge (if present, in this embodiment, this compression edge is located in the middle of the flexible sealing strip and does not exist) is a flat planar structure. The first compression deformation edge has four folded edges that are sequentially folded and matched at acute angles in the compression direction Y - a first inner folded edge, a second inner folded edge, a third inner folded edge and a fourth inner folded edge. The folding angles of these four folded edges form, at the waist portion in the compression direction Y, an inward folding structure at the folding angle of the first inner folded edge and the second inner folded edge, an outward folding structure at the folding angle of the second inner folded edge and the third inner folded edge, and an inward folding structure at the folding angle of the third inner folded edge and the fourth inner folded edge. That is, the four folded edges of the first compression deformation edge form a structure where the folding angles of two sets of adjacent folded edges are inwardly folded at the waist portion in the compression direction Y, which makes the cross section of the compression deformation unit assume a recumbent W shape; similarly, the second compression deformation edge has four folded edges that are sequentially folded and matched at acute angles in the compression direction Y - a fifth inner folded edge, a sixth inner folded edge, a seventh inner folded edge and an eighth inner folded edge. The folding angles of these four folded edges form, at the waist portion in the compression direction Y, an inward folding structure at the folding angle of the fifth inner folded edge and the sixth inner folded edge, an outward folding structure at the folding angle of the sixth inner folded edge and the seventh inner folded edge, and an inward folding structure at the folding angle of the seventh inner folded edge and the eighth inner folded edge. That is, the four folded edges of the second compression deformation edge form a structure where the folding angles of two sets of adjacent folded edges are inwardly folded at the waist portion in the compression direction Y, which makes the cross section of the compression deformation unit assume a recumbent W shape. As an optimal fit, the first compression deformation edge and the second compression deformation edge are substantially bilaterally symmetrical in the sealing width direction X, so that the compression deformation unit forms a double-layer waist-contracting structure on the cross section (in the compression direction Y), which can generate double-layer inward folding compression deformation along the compression direction Y when compressed. Based on this double-layer waist-contracting structure, the cross section (in the compression direction Y) of the compression deformation gallery hole of the compression deformation unit is approximately in a king-shaped structure.

[0047] Generally, to meet the mechanical performance requirements, the wall thickness of each edge constituting the compression deformation gallery hole of the above-mentioned compression deformation unit is set within the range of 3 to 5 mm. In addition, to reduce the structural stress between adjacent edges and facilitate extrusion molding through a mold, the matching angle between adjacent edges is usually a rounded corner structure, especially the acute folding angle between two adjacent folded edges of the above-mentioned first compression deformation edge / second compression deformation edge, which more requires rounded corner molding.

[0048] The flexible sealing strip of this invention has two interconnected pressure-bearing deformation units in the pressure direction Y. Therefore, a transitional connection structure is necessary between the upper and lower pressure-bearing deformation units, which is the shared pressure-bearing edge between them. Specifically, the second pressure-bearing edge of the upper pressure-bearing deformation unit serves as the transitional connection structure for the lower pressure-bearing deformation unit, thus forming the first pressure-bearing edge of the lower pressure-bearing deformation unit, with the bottom surface of the second pressure-bearing edge of the lower pressure-bearing deformation unit exposed. It can be seen that when the flexible sealing strip has multiple sequentially arranged and interconnected pressure-bearing deformation units in the pressure direction Y, adjacent pressure-bearing deformation units share the same pressure-bearing edge.

[0049] The flexible sealing strips described above are arranged at each circumferential joint between the first and second clamp halves. The first pressure-bearing edge of the upper pressure-bearing deformation unit of the flexible sealing strip is bonded and fixed to the corresponding sealing surface of the first clamp halves, and the second pressure-bearing edge of the lower pressure-bearing deformation unit of the flexible sealing strip is bonded and fixed to the corresponding sealing surface of the second clamp halves. Under the locking of the multiple screw assemblies inserted at the circumferential joint, the inner and outer sides of each pressure-bearing deformation unit undergo double-layer inward compression deformation, forming a radial seal on the circumferential joint, thus basically preventing outward deformation in the sealing width direction X during compression deformation.

[0050] The cable clamp of this utility model, when the flexible sealing strip is assembled and deformed under pressure, fills both ends of each pressure deformation unit with sealant. This sealant can block the ends of the corresponding compression deformation holes during the compression deformation of the flexible sealing strip, preventing water leakage and the intrusion of corrosive substances into the interior of the flexible sealing strip.

[0051] Of course, the sealant can also be filled after the flexible sealing strip has been compressed and deformed, but this is not conducive to the sealant fully seeping and sealing in the corresponding compression deformation cavity of the flexible sealing strip.

[0052] Example 3 The rest of the content of this embodiment is the same as that of embodiment 1 or 2, except that: The flexible sealing strip has three interconnected pressure deformation units in the pressure direction Y. Thus, the upper pressure deformation unit and the middle pressure deformation unit share the same pressure edge, and the middle pressure deformation unit and the lower pressure deformation unit share the same pressure edge.

[0053] Example 4 The rest of the content of this embodiment is the same as that of embodiment 1 or 2, except that: The flexible sealing strip has five interconnected pressure deformation units in the pressure direction Y. According to the order from top to bottom in the pressure direction Y, the first pressure deformation unit and the second pressure deformation unit share the same pressure edge, the second pressure deformation unit and the third pressure deformation unit share the same pressure edge, the third pressure deformation unit and the fourth pressure deformation unit share the same pressure edge, and the fourth pressure deformation unit and the fifth pressure deformation unit share the same pressure edge.

[0054] Example 5 The rest of the contents of this embodiment are the same as those of embodiment 1, except for the molding structure of the flexible sealing strip.

[0055] Specifically, the flexible sealing strip of this embodiment has a single hollow pressure-deformation unit structure in the pressure direction Y, with a first pressure-bearing edge and a second pressure-bearing edge spaced apart in the pressure direction Y, and a first compression-deformation edge and a second compression-deformation edge spaced apart in the sealing width direction X, located between the first pressure-bearing edge and the second pressure-bearing edge. The first pressure-bearing edge, the first compression-deformation edge, the second pressure-bearing edge, and the second compression-deformation edge form a closed structure with a compression-deformation corridor along the longitudinal direction Z of the seal. The first pressure-bearing edge and the second pressure-bearing edge of the pressure-deformation unit are both flat structures. In simpler terms, the exposed top surface of the first pressure-bearing edge is a flat planar structure, used for bonding with the corresponding sealing surface of the first clamp half, and the exposed bottom surface of the second pressure-bearing edge is a flat planar structure, used for bonding with the corresponding sealing surface of the second clamp half. The first compression deformation edge has two folded edges in the compression direction Y, which are sequentially bent at acute angles – a first inner folded edge and a second inner folded edge. The folds of these two folded edges form an inward fold structure at the waist of the compression direction Y, so that the cross-section of the compression deformation unit is a horizontal V-shape. Similarly, the second compression deformation edge has two folded edges in the compression direction Y, which are sequentially bent at acute angles – a third inner folded edge and a fourth inner folded edge. The folds of these two folded edges form an inward fold structure at the waist of the compression direction Y, so that the cross-section (compression direction Y) of the compression deformation unit is a horizontal V-shape. As the optimal fit, the first compression deformation edge and the second compression deformation edge are basically symmetrical in the sealing width direction X. In this way, the compression deformation unit forms a waist-tight structure in the cross-section (compression direction Y), which can generate inward compression deformation along the compression direction Y when compressed. Based on this waist-tightening structure, the cross-section (compression direction Y) of the compression deformation corridor of the compression deformation unit is an I-shaped straight slide rail structure.

[0056] Example 6 The rest of the content of this embodiment is the same as that of embodiment 5, except that: The flexible sealing strip has a solid core structure.

[0057] While this embodiment can achieve inward compression deformation under pressure, its core structure limits the amount of compression deformation; that is, the amount of compression deformation is relatively limited. However, compared to... Figure 2 For the rectangular solid sealing strip shown, the amount of compression deformation is still relatively good due to the waist-cinching structure on both sides.

[0058] The above embodiments are only used to illustrate the present invention and are not intended to limit it.

[0059] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions of the above embodiments, or equivalent substitutions can be made to some of the technical features, such as adopting a straddle-type cable clamp with a left and right half combination in the main structure of the cable clamp; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the present invention.

Claims

1. A flexible sealing strip for cable clamps, the flexible sealing strip being arranged at the circumferential joint between adjacent cable clamp halves; Its features are: The flexible sealing strip has at least one pressure deformation unit in the pressure direction (Y); When subjected to pressure, the compression deformation unit can generate inward compression deformation at both sides of the waist in the compression direction (Y).

2. The flexible sealing strip for cable clamps according to claim 1, characterized in that: The pressure deformation unit of the flexible sealing strip has a first pressure edge (1) and a second pressure edge (2) arranged at intervals in the pressure direction (Y), and a first compression deformation edge (3) and a second compression deformation edge (4) arranged at intervals in the sealing width direction (X), located between the first pressure edge (1) and the second pressure edge (2), which can generate inward compression deformation when compressed. The first pressure edge (1), the first compression deformation edge (3), the second pressure edge (2) and the second compression deformation edge (4) form a closed structure of compression deformation corridor (5) along the longitudinal direction (Z) of the seal.

3. The flexible sealing strip for cable clamps according to claim 2, characterized in that: The first compression deformation edge (3) and the second compression deformation edge (4) of the pressure deformation unit are symmetrical in the sealing width direction (X); The compression deformation edge has multiple folds that are sequentially bent at acute angles in the compression direction (Y), and among these folds constituting the compression deformation edge, at least two adjacent folds form an inward fold structure at the waist of the compression direction (Y).

4. The flexible sealing strip for cable clamps according to claim 3, characterized in that: The compression deformation edge has two folded edges with acute angles in the compression direction (Y), and the folds of these two folded edges form an inward fold structure at the waist of the compression direction (Y).

5. The flexible sealing strip for cable clamps according to claim 3, characterized in that: The compression deformation edge has four folds that are sequentially bent at acute angles in the compression direction (Y). The folds of two sets of adjacent folds in these four folds form an inward fold structure at the waist of the compression direction (Y).

6. The flexible sealing strip for cable clamps according to claim 3, 4, or 5, characterized in that: The angle between two adjacent folded edges of the compression deformation edge is a rounded corner structure.

7. The flexible sealing strip for cable clamps according to claim 2, characterized in that: The flexible sealing strip is made of rubber. The wall thickness of each side of the compression deformation corridor (5) that forms the compression deformation unit is 3 to 5 mm.

8. The flexible sealing strip for cable clamps according to claim 1, 2, or 7, characterized in that: The flexible sealing strip has multiple pressure-deformation units arranged sequentially and connected as a whole in the pressure direction (Y); Adjacent compression deformation units share the same compression edge.

9. A suspension bridge cable clamp, comprising a first cable clamp half (6) and a second cable clamp half (7) circumferentially joined to form a cable hole (8). Its features are: At the circumferential joint between the first cable clamp half (6) and the second cable clamp half (7), a flexible sealing strip as described in any one of claims 1 to 8 is arranged; Under the locking of the multiple screw assemblies (9) installed at the circumferential joint, the flexible sealing strip generates inward compression deformation at the waist of the inner and outer sides of the pressure deformation unit, forming a radial seal on the circumferential joint.

10. The suspension bridge cable clamp according to claim 9, characterized in that: At both ends of the pressure deformation unit of the flexible sealing strip, sealant is filled to seal the corresponding compression deformation corridor hole (5).

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