Anti-screw bending load cable clamp for suspension bridge

Abstract

The utility model relates to the technical field of suspension bridge cable clamp, specifically disclose a kind of anti screw bending load cable clamp for suspension bridge, including cable clamp half, the circumferential two sides of cable clamp half are respectively provided with the bulge, the pressure part of platform structure;On pressure part, multiple screw holes are arranged along the axial spacing of cable clamp half;The screw hole of cable clamp half is variable-diameter structure in the axial direction of hole, at least have adjacent platform face Small-diameter positioning section, and adjacent butt face Large-diameter section of giving place;When screw assembly is locked in the cable clamp half of circumferential adjacency through corresponding screw hole, screw assembly passes through small-diameter positioning section and is locked and fixed at platform face, and screw assembly is kept gap cooperation with hole wall at large-diameter section of giving place.The utility model can effectively avoid screw hole of cable clamp from screw, prevent bending load phenomenon of screw in corresponding screw hole while meeting the technical conditions of screw assembly threading.

Description

Technical Field

[0001] This utility model relates to the field of suspension bridge cable clamp technology, specifically a cable clamp for suspension bridges that prevents bolt bending under load. Background Technology

[0002] In suspension bridge structures, cable clamps are used to transfer the suspenders / arresters connecting the bridge deck to the main cable. Therefore, cable clamps are key load-bearing components between the main cable and the bridge deck suspenders / arresters, and their connection stability on the main cable is subject to high technical requirements. The connection stability of the cable clamp on the main cable is ensured by the friction between the cable clamp half and the main cable under the locking of the screw assembly.

[0003] See Figure 1 As shown, a common suspension bridge cable clamp (pin-connected structure) is mainly composed of multiple screw assemblies C connected circumferentially to the upper half A and the lower half B of the clamp. The upper half A and the lower half B form a main cable hole D for threading the main cable. In the forming structure of the cable clamp half (upper half A / lower half B), to meet the technical requirements of threading and circumferentially connecting the screw assemblies C, there are raised, platform-shaped pressure-bearing parts on both sides of the circumferential direction of the cable clamp half. On the pressure-bearing parts, multiple screw holes E are arranged along the axial spacing of the cable clamp half. The screw holes E at each connection point of the two circumferentially connected cable clamp halves (i.e., upper half A and lower half B) are in a one-to-one correspondence, thereby realizing the threading of the same set of screw assemblies C in the corresponding screw holes. When the cable clamps of the aforementioned structure are locked onto the main cable, tightening each screw assembly C enables the two circumferentially connected cable clamp halves (i.e., the upper cable clamp A and the lower cable clamp B) to grip the main cable tightly, increasing contact friction and preventing slippage.

[0004] See Figures 1 to 4 As shown, in the above-mentioned forming structure of the cable clamp half, in order to accommodate the insertion of the screw assembly C into the corresponding screw hole E, and to ensure that the nut of the screw assembly C is stably locked and forcefully applied on the pressure-bearing plane of the pressure-bearing part, the diameter of the screw hole E on the cable clamp half should not be too large, only allowing the screw of the screw assembly C to pass freely, usually slightly larger than the screw diameter by 3mm (e.g. Figure 2 (As shown).

[0005] However, locking the cable clamps onto the main cable requires adjusting the locking force of the screw assembly C. Therefore, the circumferentially mated cable clamp halves are not rigidly joined; instead, a pre-tightening space exists at the circumferential joint (this pre-tightening space is sealed by a sealing strip to meet sealing requirements, such as...). Figure 1 and Figure 2(As shown). Thus, when the locking force of the cable clamp on the main cable in the circumferential direction is too large, it will cause the centripetal contraction and slight deformation of the bearing parts on both sides of the cable clamp half in the circumferential direction, resulting in the offset of the axis of the screw hole E. The final position of the screw hole axis will have a deformation angle α between it and the designed screw hole axis position (as shown). Figure 3 and Figure 4 As shown in the figure, this is especially evident in the cable clamp structure of long-span, heavy-load suspension bridges, where the rigidity of the cable clamp half is weakened.

[0006] Because the design of the screw hole E on the aforementioned cable clamp half is only to ensure the free passage of the screw of the screw assembly C, and to ensure the locking force of the nut at the end of the screw and on the bearing plane, the clearance between the screw hole E and the screw of the screw assembly C is very small. Under the influence of the micro-deformation of the aforementioned cable clamp half, the wall of the screw hole E is prone to abutting against the screw of the screw assembly C, generating a radial torque on the screw of the screw assembly C, which in turn causes the screw assembly to bend under load. This phenomenon will make the screw assembly prone to fatigue stress during service, and may even cause the comprehensive stress effect of the screw to exceed the screw limit and fail. The risk of slippage of the cable clamp on the main cable increases, directly affecting the stability and reliability of the cable clamp locking on the main cable. Utility Model Content

[0007] The technical objective of this utility model is to provide a suspension bridge anti-screw bending load cable clamp that addresses the special stress characteristics of cable clamps for suspension bridges, especially those for long-span, heavy-load suspension bridges, and the shortcomings of existing technologies. This cable clamp can effectively avoid the screw in the screw hole of the cable clamp and prevent the screw from bending under load in the corresponding screw hole, while meeting the technical requirements for screw assembly installation.

[0008] The technical objective of this utility model is achieved through the following technical solution: a suspension bridge anti-screw bending load-bearing cable clamp, comprising a cable clamp half, wherein the cable clamp half has a protruding, platform-structured pressure-bearing part on each of its two circumferential sides; On the pressure-bearing part, a plurality of screw holes are arranged along the axial spacing of the cable clamp half; the screw holes of the cable clamp half have a variable diameter structure in the axial direction of the holes, having at least a small diameter positioning section adjacent to the platform surface and a large diameter clearance section adjacent to the mating surface; When the screw assembly locks the circumferentially adjacent cable clamp half through the corresponding screw hole, the screw assembly passes through the small diameter positioning section and is locked and fixed at the platform surface, and the screw assembly maintains a clearance fit with the hole wall at the large diameter clearance section.

[0009] The aforementioned technical measures address the specific stress characteristics of cable clamps for suspension bridges, especially those for long-span, heavy-load suspension bridges. By creating a variable-diameter structure for the screw holes on each half of the cable clamp, the axial diameter of the holes is adjusted. This retains the small diameter of the screw holes at the pressure-bearing platform surface to ensure stable and reliable force application during nut tightening. Simultaneously, the larger diameter of the screw holes near the mating surface effectively increases the clearance between the screw hole wall and the installed screw. Consequently, during circumferential centripetal micro-deformation of the cable clamp under tightening stress, the screw hole wall essentially does not radially abut against the installed screw. In other words, these technical measures, while meeting the technical requirements for screw assembly installation, effectively allow the cable clamp's screw holes to avoid screw bending within the corresponding screw holes, preventing bending loads and ensuring the long-term effectiveness of the cable clamp's tightening force and the screw assembly's stress resistance.

[0010] As one of the preferred technical solutions, the screw hole has a small-diameter positioning section, a large-diameter clearance section, and a variable-diameter transition section between the small-diameter positioning section and the large-diameter clearance section in the axial direction. The variable-diameter structure screw hole of this technical measure allows for a smooth transition from the small-diameter section to the large-diameter section, thereby ensuring the basic balance of force on the cable clamp and also facilitating the processing and forming of the cable clamp half.

[0011] As one of the preferred technical solutions, the diameter of the small-diameter positioning section of the screw hole is 2 to 4 mm larger than the diameter of the corresponding insertion position of the screw assembly.

[0012] Furthermore, the diameter of the small-diameter positioning section of the screw hole is 3mm larger than the diameter of the corresponding insertion position of the screw assembly.

[0013] The above-mentioned technical measures are designed to address the unique stress characteristics of the cable clamps in the suspension bridge via the screw assembly. Without fundamentally altering the structure of the screw assembly itself, the forming structure of the small-diameter section of the variable-diameter screw hole at the pressure-bearing platform surface reliably ensures the force applied by the nut of the screw assembly during tightening, thus effectively meeting the technical requirements for the installation of the screw assembly.

[0014] As one of the preferred technical solutions, the diameter of the large-diameter clearance section of the screw hole is 5 to 12 mm larger than the diameter of the corresponding insertion position of the screw assembly.

[0015] Furthermore, the diameter of the large-diameter clearance section of the screw hole is 8 to 10 mm larger than the diameter of the corresponding insertion position of the screw assembly.

[0016] The above-mentioned technical measures address the unique stress characteristics of the cable clamps in suspension bridges via the screw assembly. Without significantly affecting the locking force on the cable clamp half and the screw assembly, the area where the screw hole tilts slightly during circumferential centripetal deformation of the cable clamp half is transformed into a larger diameter section. This increases the clearance between the screw hole wall and the installed screw, ensuring that even with circumferential centripetal deformation of the cable clamp half, the screw hole wall will not radially abut against the installed screw. This effectively avoids the screw and reliably prevents the screw from bending and being loaded within the corresponding screw hole.

[0017] As one of the preferred technical solutions, the screw assembly is divided into an upper cable clamp half and a lower cable clamp half in the circumferential direction, and the upper cable clamp half and the lower cable clamp half are joined together in the circumferential direction to form a main cable hole. The screw holes between the upper and lower halves of the cable clamp have a symmetrical fit structure with one-to-one correspondence.

[0018] Alternatively, the screw assembly is divided into a left half and a right half of the cable clamp in the circumferential direction, and the left half and the right half of the cable clamp are joined together in the circumferential direction to form a main cable hole. The screw holes between the left and right halves of the cable clamp have a symmetrical fit structure with a one-to-one correspondence.

[0019] The above-mentioned technical measures are aimed at the forming structure of the cable clamp. The screw combination hole used to insert the same screw assembly (the axial docking combination structure between the screw hole on the upper half of the cable clamp and the screw hole on the lower half of the cable clamp, or the axial docking combination structure between the screw hole on the left half of the cable clamp and the screw hole on the right half of the cable clamp, the same below) is formed into a basically symmetrical structure from top to bottom and left to right. This makes the upper and lower / left and right ends of the screw combination hole a small diameter section structure and the middle part a large diameter section structure, so as to reliably achieve the technical purpose and effect of preventing the screw from bending under load.

[0020] As one of the preferred technical solutions, the screw of the screw assembly has a waist-shaped structure in the axial direction; In the mating structure with the cable clamp half, the constricted section of the screw is located within the large-diameter clearance section of the screw hole.

[0021] The aforementioned technical measures take into account the possibility of screw breakage in extreme cases, ensuring that the screw breaks at the constricted section rather than the threaded structure used as a connecting nut, thus facilitating convenient and efficient emergency repairs. Furthermore, the fit between the constricted screw structure and the variable diameter screw bore further increases the clearance between the screw bore wall and the installed screw.

[0022] The beneficial technical effects of this utility model are as follows: The above-mentioned technical measures are aimed at the special stress characteristics of the cable clamps of the suspension bridge, especially the cable clamps of long-span and heavy-load suspension bridges. The screw holes on the cable clamp half are formed into a variable diameter structure with the hole axis. In this way, while meeting the technical conditions for screw assembly installation, the screw holes of the cable clamp can effectively avoid the screw and prevent the screw from bending and being loaded in the corresponding screw hole. This is conducive to ensuring the locking force of the cable clamp and the long-term effectiveness of the screw assembly. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the existing cable clamp structure.

[0024] Figure 2 for Figure 1 A magnified view of a portion of the image.

[0025] Figure 3 for Figure 1 A schematic diagram showing the inward bending effect of the upper half of the cable clamp.

[0026] Figure 4 for Figure 3 The diagram shows the structure of the upper half of the cable clamp after it bends inward.

[0027] Figure 5 This is a schematic diagram of one structure of the present utility model.

[0028] Figure 6 for Figure 5 A schematic diagram of the upper half of the cable clamp.

[0029] Figure 7 This is another structural schematic diagram of the present invention.

[0030] Figure 8 for Figure 7 Side view.

[0031] The symbols in the diagram have the following meanings: 1—Cable clamp half; 11—Pressure bearing part; 12—Screw hole; 121—Small diameter positioning section; 122—Diameter transition section; 123—Large diameter clearance section; 13—Platform surface; 14—Mating surface; A—Upper half of the cable clamp; B—Lower half of the cable clamp; C—Screw assembly; D—Main cable hole; E—Screw hole; F—Left half of the cable clamp; G—Right half of the cable clamp; a—Deformation angle. Detailed Implementation

[0032] This utility model relates to the field of suspension bridge cable clamp technology, specifically a cable clamp for suspension bridges to prevent bolt bending under load. The main technical solution of this utility model is described in detail below with reference to several embodiments. Embodiment 1 is illustrated in conjunction with the accompanying drawings—that is… Figure 5 and Figure 6The technical solution of this utility model will be clearly and thoroughly explained; Embodiment 6 is illustrated in conjunction with the accompanying drawings. Figure 7 and Figure 8 The technical solution of this utility model is clearly and in detail explained; although other embodiments are not shown in separate drawings, their main structure can still be referred to the drawings of Embodiment 1 or Embodiment 6.

[0033] 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.

[0034] Example 1 See Figure 5 As shown, the suspension bridge cable clamp of this utility model is a pin-connected structure, which is mainly composed of an upper half A and a lower half B of the cable clamp connected in the circumferential direction by multiple screw components C. The upper half A and the lower half B are both cable clamp halves 1 that make up the cable clamp. The upper half A and the lower half B form a main cable hole D that can be threaded through the main cable. The bottom center of the lower half B has a downwardly extending ear plate.

[0035] See Figure 5 and Figure 6 As shown, to accommodate the arrangement of the screw assembly C, the cable clamp half 1 of this invention (i.e., the upper half A / lower half B of the cable clamp mentioned above) has protruding, platform-structured pressure-bearing portions 11 on both circumferential sides. That is, the cable clamp half 1 is composed of an arc-shaped segment with a tile structure and platform structures protruding outwards on both circumferential sides. On each side of the pressure-bearing portion 11 of the cable clamp half 1, multiple screw holes 12 are spaced at intervals along the axial direction of the cable clamp half 1 (also the length direction of the pressure-bearing portion 11). The pressure-bearing portion 11 has an outer platform surface 13 that mates with the corresponding nut of the screw assembly C, and an inner mating surface 14 that mates with the sealing strip. The axial direction of each screw hole 12 extends through the platform surface 13 and the mating surface 14 of the pressure-bearing portion 11.

[0036] To achieve the above technical objective and prevent the screw from being subjected to radial bending load, each screw hole 12 on the pressure-bearing part 11 of the above-mentioned cable clamp half 1 has a variable diameter structure in the axial direction of the hole. Specifically, the screw hole 12 has a small-diameter positioning section 121, a large-diameter clearance section 123, and a diameter-changing transition section 122 located between the small-diameter positioning section 121 and the large-diameter clearance section 123 in the axial direction. Among them, the small-diameter positioning section 121 is adjacent to the platform surface 13 in the integral forming structure of the screw hole 12. Generally, the diameter of the small-diameter positioning section 121 is about 3 mm larger than the diameter of the screw corresponding to the insertion position of the screw assembly C. The large-diameter clearance section 123 is adjacent to the mating surface 14 in the integral forming structure of the screw hole 12. Generally, the diameter of the large-diameter clearance section 123 is about 10 mm larger than the diameter of the screw corresponding to the insertion position of the screw assembly C. The diameter-changing transition section 122 is a sloped structure, with its small-diameter section adjacent to the small-diameter positioning section 121 and its large-diameter section adjacent to the large-diameter clearance section 123.

[0037] See Figure 5 As shown, the cable clamp upper half A and lower half B, formed by the above-mentioned cable clamp half 1 structure, are circumferentially joined together in the working environment to form a cable clamp capable of threading the main cable. The screw holes on the upper half A and the screw holes on the lower half B have a one-to-one corresponding fit relationship in the upper and lower positions. The screw holes 12 with a one-to-one matching relationship form a screw combination hole. This screw combination hole is basically a vertically symmetrical structure, with its upper and lower ends being small-diameter sections (slightly larger than the corresponding part of the threaded screw by 3mm) and the middle part being a large-diameter section (slightly larger than the corresponding part of the threaded screw by 10mm).

[0038] At each pressure-bearing part of the cable clamp, when multiple screw assemblies C are locked to the circumferentially adjacent cable clamp halves 1 (upper cable clamp A and lower cable clamp B) through the corresponding screw combination holes, the screw of the screw assembly C passes through the small-diameter positioning section 121 of the screw combination hole and is locked and fixed by the corresponding nut at the corresponding platform surface 13. The screw of the screw assembly C maintains a clearance fit with the hole wall at the large-diameter clearance section 123 of the screw combination hole to effectively prevent the hole wall of the screw combination hole from radially abutting the screw and causing the screw to bend and be loaded.

[0039] In the above-mentioned cable clamp structure, to prevent the screw from breaking under extreme conditions, the screw of the screw assembly C adopts a waist-reducing structure in the axial direction. In the mating structure with the cable clamp half 1 (upper half A and lower half B), the waist-reducing section of the screw is located within the large-diameter clearance section 123 of the screw assembly hole.

[0040] Example 2 The suspension bridge cable clamp of this utility model is mainly composed of an upper half and a lower half of the cable clamp connected in the circumferential direction by multiple screw assemblies. Both the upper half and the lower half of the cable clamp are cable clamp halves that make up the cable clamp. The upper half and the lower half of the cable clamp form a main cable hole that can be threaded through the main cable.

[0041] To accommodate the arrangement of the screw assembly, the cable clamp half of this invention (i.e., the aforementioned upper / lower half of the cable clamp) has raised, platform-structured pressure-bearing portions on both circumferential sides. In other words, the cable clamp half is composed of an arc-shaped segment with a tile-like structure and platform structures protruding outwards on both circumferential sides. On each side of the pressure-bearing portion of the cable clamp half, multiple screw holes are spaced at intervals along the axial direction of the cable clamp half (also the length direction of the pressure-bearing portion). The pressure-bearing portion has an outer platform surface that mates with the corresponding nut of the screw assembly, and an inner mating surface that mates with the sealing strip. Each screw hole axially penetrates both the platform surface and the mating surface of the pressure-bearing portion.

[0042] To achieve the aforementioned technical objective and prevent the installed screw from being subjected to radial bending loads, each screw hole on the bearing portion of the aforementioned cable clamp half has a variable diameter structure in the axial direction. Specifically, the screw hole has a small-diameter positioning section, a large-diameter clearance section, and a variable diameter transition section between the small-diameter positioning section and the large-diameter clearance section in the axial direction; wherein, the small-diameter positioning section is adjacent to the aforementioned platform surface in the integral forming structure of the screw hole, and typically, the diameter of the small-diameter positioning section is about 2 mm larger than the diameter of the screw corresponding to the insertion position of the screw assembly; the large-diameter clearance section is adjacent to the aforementioned mating surface in the integral forming structure of the screw hole, and typically, the diameter of the large-diameter clearance section is about 8 mm larger than the diameter of the screw corresponding to the insertion position of the screw assembly; the variable diameter transition section is a sloped structure, with its small-diameter section adjacent to the small-diameter positioning section and its large-diameter section adjacent to the large-diameter clearance section.

[0043] The upper and lower halves of the cable clamp, formed by the aforementioned cable clamp half-body structure, are circumferentially joined together in the working environment to form a cable clamp capable of threading the main cable. The screw holes on the upper half and the screw holes on the lower half of the cable clamp have a one-to-one corresponding fit. These corresponding screw holes form a screw assembly hole, which is basically symmetrical in structure. Its upper and lower ends are small-diameter sections (slightly larger than the corresponding diameter of the threaded screw by 2mm), and the middle section is a large-diameter section (slightly larger than the corresponding diameter of the threaded screw by 8mm).

[0044] At each pressure-bearing part of the cable clamp, when multiple screw assemblies are locked to the circumferentially adjacent cable clamp halves (upper and lower halves) through corresponding screw combination holes, the screws of the screw assemblies pass through the small-diameter positioning section of the screw combination hole and are locked and fixed by the corresponding nuts at the corresponding platform surface. The screws of the screw assemblies maintain a clearance fit with the hole wall at the large-diameter clearance section of the screw combination hole to effectively prevent the hole wall of the screw combination hole from radially abutting the screw and causing the screw to bend and be loaded.

[0045] In the aforementioned cable clamp structure, to prevent potential breakage of the screw in extreme cases, the screw of the screw assembly adopts a waist-reducing structure in the axial direction. In the mating structure with the cable clamp halves (upper and lower halves), the waist-reducing section of the screw is located within the large-diameter clearance section of the screw assembly hole.

[0046] Example 3 The suspension bridge cable clamp of this utility model is mainly composed of an upper half and a lower half of the cable clamp connected in the circumferential direction by multiple screw assemblies. Both the upper half and the lower half of the cable clamp are cable clamp halves that make up the cable clamp. The upper half and the lower half of the cable clamp form a main cable hole that can be threaded through the main cable.

[0047] To accommodate the arrangement of the screw assembly, the cable clamp half of this invention (i.e., the aforementioned upper / lower half of the cable clamp) has raised, platform-structured pressure-bearing portions on both circumferential sides. In other words, the cable clamp half is composed of an arc-shaped segment with a tile-like structure and platform structures protruding outwards on both circumferential sides. On each side of the pressure-bearing portion of the cable clamp half, multiple screw holes are spaced at intervals along the axial direction of the cable clamp half (also the length direction of the pressure-bearing portion). The pressure-bearing portion has an outer platform surface that mates with the corresponding nut of the screw assembly, and an inner mating surface that mates with the sealing strip. Each screw hole axially penetrates both the platform surface and the mating surface of the pressure-bearing portion.

[0048] To achieve the aforementioned technical objective and prevent the inserted screw from being subjected to radial bending loads, each screw hole on the bearing portion of the aforementioned cable clamp half has a variable diameter structure in the axial direction. Specifically, the screw hole has a small-diameter positioning section and a large-diameter clearance section in the axial direction; wherein, the small-diameter positioning section is adjacent to the aforementioned platform surface in the integral forming structure of the screw hole, and typically, the diameter of the small-diameter positioning section is about 3 mm larger than the diameter of the corresponding insertion position of the screw in the screw assembly; the large-diameter clearance section is adjacent to the aforementioned mating surface in the integral forming structure of the screw hole, and typically, the diameter of the large-diameter clearance section is about 9 mm larger than the diameter of the corresponding insertion position of the screw in the screw assembly.

[0049] The upper and lower halves of the cable clamp, formed by the aforementioned cable clamp half-body structure, are circumferentially joined together in the working environment to form a cable clamp capable of threading the main cable. The screw holes on the upper half and the screw holes on the lower half of the cable clamp have a one-to-one correspondence in their vertical positions. These corresponding screw holes form a screw assembly hole, which is basically symmetrical in structure. Its upper and lower ends are small-diameter sections (slightly larger than the corresponding diameter of the threaded screw by 3mm), and its middle section is a large-diameter section (slightly larger than the corresponding diameter of the threaded screw by 9mm).

[0050] At each pressure-bearing part of the cable clamp, when multiple screw assemblies are locked to the circumferentially adjacent cable clamp halves (upper and lower halves) through corresponding screw combination holes, the screws of the screw assemblies pass through the small-diameter positioning section of the screw combination hole and are locked and fixed by the corresponding nuts at the corresponding platform surface. The screws of the screw assemblies maintain a clearance fit with the hole wall at the large-diameter clearance section of the screw combination hole to effectively prevent the hole wall of the screw combination hole from radially abutting the screw and causing the screw to bend and be loaded.

[0051] In the aforementioned cable clamp structure, to prevent potential breakage of the screw in extreme cases, the screw of the screw assembly adopts a waist-reducing structure in the axial direction. In the mating structure with the cable clamp halves (upper and lower halves), the waist-reducing section of the screw is located within the large-diameter clearance section of the screw assembly hole.

[0052] Example 4 The suspension bridge cable clamp of this utility model is mainly composed of an upper half and a lower half of the cable clamp connected in the circumferential direction by multiple screw assemblies. Both the upper half and the lower half of the cable clamp are cable clamp halves that make up the cable clamp. The upper half and the lower half of the cable clamp form a main cable hole that can be threaded through the main cable.

[0053] To accommodate the arrangement of the screw assembly, the cable clamp half of this invention (i.e., the aforementioned upper / lower half of the cable clamp) has raised, platform-structured pressure-bearing portions on both circumferential sides. In other words, the cable clamp half is composed of an arc-shaped segment with a tile-like structure and platform structures protruding outwards on both circumferential sides. On each side of the pressure-bearing portion of the cable clamp half, multiple screw holes are spaced at intervals along the axial direction of the cable clamp half (also the length direction of the pressure-bearing portion). The pressure-bearing portion has an outer platform surface that mates with the corresponding nut of the screw assembly, and an inner mating surface that mates with the sealing strip. Each screw hole axially penetrates both the platform surface and the mating surface of the pressure-bearing portion.

[0054] To achieve the aforementioned technical objective and prevent the installed screw from being subjected to radial bending loads, each screw hole on the bearing portion of the aforementioned cable clamp half has a variable diameter structure in the axial direction. Specifically, the screw hole has a small-diameter positioning section, a large-diameter clearance section, and a variable diameter transition section between the small-diameter positioning section and the large-diameter clearance section in the axial direction; wherein, the small-diameter positioning section is adjacent to the aforementioned platform surface in the integral forming structure of the screw hole, and typically, the diameter of the small-diameter positioning section is approximately 4 mm larger than the diameter of the screw corresponding to the insertion position of the screw assembly; the large-diameter clearance section is adjacent to the aforementioned mating surface in the integral forming structure of the screw hole, and typically, the diameter of the large-diameter clearance section is approximately 12 mm larger than the diameter of the screw corresponding to the insertion position of the screw assembly; the variable diameter transition section is a sloped structure, with its small-diameter section adjacent to the small-diameter positioning section and its large-diameter section adjacent to the large-diameter clearance section.

[0055] The upper and lower halves of the cable clamp, formed by the aforementioned cable clamp half-body structure, are circumferentially joined together in the working environment to form a cable clamp capable of threading the main cable. The screw holes on the upper half and the screw holes on the lower half of the cable clamp have a one-to-one correspondence in their vertical positions. These corresponding screw holes form a screw assembly hole, which is basically symmetrical in structure. Its upper and lower ends are small-diameter sections (slightly larger than the corresponding diameter of the threaded screw by 4mm), and the middle section is a large-diameter section (slightly larger than the corresponding diameter of the threaded screw by 12mm).

[0056] At each pressure-bearing part of the cable clamp, when multiple screw assemblies are locked to the circumferentially adjacent cable clamp halves (upper and lower halves) through corresponding screw combination holes, the screws of the screw assemblies pass through the small-diameter positioning section of the screw combination hole and are locked and fixed by the corresponding nuts at the corresponding platform surface. The screws of the screw assemblies maintain a clearance fit with the hole wall at the large-diameter clearance section of the screw combination hole to effectively prevent the hole wall of the screw combination hole from radially abutting the screw and causing the screw to bend and be loaded.

[0057] In the aforementioned cable clamp structure, to prevent potential breakage of the screw in extreme cases, the screw of the screw assembly adopts a waist-reducing structure in the axial direction. In the mating structure with the cable clamp halves (upper and lower halves), the waist-reducing section of the screw is located within the large-diameter clearance section of the screw assembly hole.

[0058] Example 5 The suspension bridge cable clamp of this utility model is mainly composed of an upper half and a lower half of the cable clamp connected in the circumferential direction by multiple screw assemblies. Both the upper half and the lower half of the cable clamp are cable clamp halves that make up the cable clamp. The upper half and the lower half of the cable clamp form a main cable hole that can be threaded through the main cable.

[0059] To accommodate the arrangement of the screw assembly, the cable clamp half of this invention (i.e., the aforementioned upper / lower half of the cable clamp) has raised, platform-structured pressure-bearing portions on both circumferential sides. In other words, the cable clamp half is composed of an arc-shaped segment with a tile-like structure and platform structures protruding outwards on both circumferential sides. On each side of the pressure-bearing portion of the cable clamp half, multiple screw holes are spaced at intervals along the axial direction of the cable clamp half (also the length direction of the pressure-bearing portion). The pressure-bearing portion has an outer platform surface that mates with the corresponding nut of the screw assembly, and an inner mating surface that mates with the sealing strip. Each screw hole axially penetrates both the platform surface and the mating surface of the pressure-bearing portion.

[0060] To achieve the aforementioned technical objective and prevent the installed screw from being subjected to radial bending loads, each screw hole on the bearing portion of the aforementioned cable clamp half has a variable diameter structure in the axial direction. Specifically, the screw hole has a small-diameter positioning section, a large-diameter clearance section, and a variable diameter transition section between the small-diameter positioning section and the large-diameter clearance section in the axial direction; wherein, the small-diameter positioning section is adjacent to the aforementioned platform surface in the integral forming structure of the screw hole, and typically, the diameter of the small-diameter positioning section is about 3 mm larger than the diameter of the corresponding screw insertion position of the screw assembly; the large-diameter clearance section is adjacent to the aforementioned mating surface in the integral forming structure of the screw hole, and typically, the diameter of the large-diameter clearance section is about 5 mm larger than the diameter of the corresponding screw insertion position of the screw assembly; the variable diameter transition section is a sloped structure, with its small-diameter section adjacent to the small-diameter positioning section and its large-diameter section adjacent to the large-diameter clearance section.

[0061] The upper and lower halves of the cable clamp, formed by the aforementioned cable clamp half-body structure, are circumferentially joined together in the working environment to form a cable clamp capable of threading the main cable. The screw holes on the upper half and the screw holes on the lower half of the cable clamp have a one-to-one corresponding fit. These corresponding screw holes form a screw assembly hole, which is basically symmetrical in structure. Its upper and lower ends are small-diameter sections (slightly larger than the corresponding diameter of the threaded screw by 3mm), and the middle section is a large-diameter section (slightly larger than the corresponding diameter of the threaded screw by 5mm).

[0062] At each pressure-bearing part of the cable clamp, when multiple screw assemblies are locked to the circumferentially adjacent cable clamp halves (upper and lower halves) through corresponding screw combination holes, the screws of the screw assemblies pass through the small-diameter positioning section of the screw combination hole and are locked and fixed by the corresponding nuts at the corresponding platform surface. The screws of the screw assemblies maintain a clearance fit with the hole wall at the large-diameter clearance section of the screw combination hole to effectively prevent the hole wall of the screw combination hole from radially abutting the screw and causing the screw to bend and be loaded.

[0063] Example 6 See Figure 7 and Figure 8 As shown, the suspension bridge cable clamp of this utility model is a straddle-type structure, which is mainly composed of a left half F and a right half G of the cable clamp connected in the circumferential direction by multiple screw components C. The left half F and the right half G are both cable clamp halves 1 that make up the cable clamp. The left half F and the right half G form a main cable hole D that can be inserted into the main cable. The top outer wall between the left half F and the right half G has straddle grooves arranged in an inverted U-shape.

[0064] To accommodate the arrangement of the screw assembly C, the cable clamp half 1 of this invention (i.e., the left half F and the right half G of the cable clamp mentioned above) has raised, platform-structured pressure-bearing portions 11 on both circumferential sides. That is, the cable clamp half 1 is composed of an arc-shaped segment with a tile-like structure and platform structures protruding outwards on both circumferential sides. On each side of the pressure-bearing portion 11, multiple screw holes 12 are spaced at intervals along the axial direction of the cable clamp half 1 (also the length direction of the pressure-bearing portion 11). The pressure-bearing portion 11 has an outer platform surface 13 that mates with the corresponding nut of the screw assembly C, and an inner mating surface 14 that mates with the sealing strip. Each screw hole 12 axially penetrates the platform surface 13 and the mating surface 14 of the pressure-bearing portion 11.

[0065] To achieve the above technical objective and prevent the screw from being subjected to radial bending load, each screw hole 12 on the pressure-bearing part 11 of the above-mentioned cable clamp half 1 has a variable diameter structure in the axial direction of the hole. Specifically, the screw hole 12 has a small-diameter positioning section 121, a large-diameter clearance section 123, and a diameter-changing transition section 122 located between the small-diameter positioning section 121 and the large-diameter clearance section 123 in the axial direction. Among them, the small-diameter positioning section 121 is adjacent to the platform surface 13 in the integral forming structure of the screw hole 12. Generally, the diameter of the small-diameter positioning section 121 is about 3 mm larger than the diameter of the screw corresponding to the insertion position of the screw assembly C. The large-diameter clearance section 123 is adjacent to the mating surface 14 in the integral forming structure of the screw hole 12. Generally, the diameter of the large-diameter clearance section 123 is about 10 mm larger than the diameter of the screw corresponding to the insertion position of the screw assembly C. The diameter-changing transition section 122 is a sloped structure, with its small-diameter section adjacent to the small-diameter positioning section 121 and its large-diameter section adjacent to the large-diameter clearance section 123.

[0066] The cable clamp left half F and right half G, formed by the above-mentioned cable clamp half-body 1 structure, are circumferentially joined together in the working environment to form a cable clamp capable of threading the main cable. The screw holes on the left half F and the screw holes on the right half G of the cable clamp are in a one-to-one correspondence relationship in the left and right positions. The screw holes 12 in the one-to-one correspondence relationship form a screw combination hole. This screw combination hole is basically a left-right symmetrical structure. Its left and right ends are small diameter sections (slightly larger than the corresponding part of the threaded screw by 3mm) and the middle part is a large diameter section (slightly larger than the corresponding part of the threaded screw by 10mm).

[0067] At each pressure-bearing part of the cable clamp, when multiple screw assemblies C are locked to the circumferentially adjacent cable clamp halves 1 (left half F and right half G) through the corresponding screw combination holes, the screw of the screw assembly C passes through the small-diameter positioning section 121 of the screw combination hole and is locked and fixed by the corresponding nut at the corresponding platform surface 13. The screw of the screw assembly C maintains a clearance fit with the hole wall at the large-diameter clearance section 123 of the screw combination hole to effectively prevent the hole wall of the screw combination hole from radially abutting the screw and causing the screw to bend and be loaded.

[0068] In the above-mentioned cable clamp structure, to prevent the screw from breaking under extreme conditions, the screw of the screw assembly C adopts a waist-reducing structure in the axial direction. In the mating structure with the cable clamp half 1 (the left half F and the right half G), the waist-reducing section of the screw is located within the large-diameter clearance section 123 of the screw assembly hole.

[0069] The above embodiments are only used to illustrate the present invention and are not intended to limit it.

[0070] 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 above embodiments, or equivalent substitutions can be made to some of the technical features; 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 suspension bridge anti-screw bending load-bearing cable clamp, comprising a cable clamp half (1), wherein the cable clamp half (1) has a protruding, platform-structured pressure-bearing part (11) on both sides of its circumference. On the pressure-bearing part (11), a plurality of screw holes (12) are arranged along the axial spacing of the cable clamp half (1). Its features are: The screw hole (12) of the cable clamp half (1) has a variable diameter structure in the axial direction of the hole, and has at least a small diameter positioning section (121) adjacent to the platform surface (13) and a large diameter clearance section (123) adjacent to the mating surface (14). When the screw assembly (C) locks the circumferentially adjacent cable clamp half (1) through the corresponding screw hole (12), the screw assembly (C) passes through the small diameter positioning section (121) and is locked and fixed at the platform surface (13). The screw assembly (C) maintains a clearance fit with the hole wall at the large diameter clearance section (123).

2. The anti-bending load-bearing cable clamp for suspension bridges according to claim 1, characterized in that: The screw hole (12) has a small diameter positioning section (121), a large diameter clearance section (123) in the axial direction, and a variable diameter transition section (122) between the small diameter positioning section (121) and the large diameter clearance section (123).

3. The anti-bending load-bearing cable clamp for suspension bridges according to claim 1 or 2, characterized in that: The diameter of the small-diameter positioning section (121) of the screw hole (12) is 2 to 4 mm larger than the diameter of the corresponding insertion position of the screw assembly (C).

4. The anti-bending load-bearing cable clamp for suspension bridges according to claim 3, characterized in that: The diameter of the small-diameter positioning section (121) of the screw hole (12) is 3 mm larger than the diameter of the corresponding insertion position of the screw assembly (C).

5. The anti-bending load-bearing cable clamp for suspension bridges according to claim 1 or 2, characterized in that: The diameter of the large-diameter clearance section (123) of the screw hole (12) is 5 to 12 mm larger than the diameter of the corresponding insertion position of the screw assembly (C).

6. The anti-bending load-bearing cable clamp for suspension bridges according to claim 5, characterized in that: The diameter of the large-diameter clearance section (123) of the screw hole (12) is 8 to 10 mm larger than the diameter of the corresponding insertion position of the screw assembly (C).

7. The anti-bending load-bearing cable clamp for suspension bridges according to claim 1, characterized in that: The screw assembly (C) is divided into an upper cable clamp (A) and a lower cable clamp (B) in the circumferentially adjacent cable clamp half (1), and the upper cable clamp (A) and the lower cable clamp (B) are joined together in the circumferential direction to form the main cable hole (D). The screw holes of the upper half (A) and lower half (B) of the cable clamp have a one-to-one corresponding fit structure with an upper and lower symmetrical fit.

8. The anti-bending load-bearing cable clamp for suspension bridges according to claim 1, characterized in that: The screw assembly (C) is divided into a left half (F) and a right half (G) of the cable clamp half (1) that are adjacent in the circumferential direction. The left half (F) and the right half (G) of the cable clamp are joined together in the circumferential direction to form the main cable hole (D). The screw holes of the left half (F) and the right half (G) of the cable clamp have a one-to-one corresponding fit structure and are symmetrically fitted.

9. The anti-bending load-bearing cable clamp for suspension bridges according to claim 1, 7, or 8, characterized in that: The screw of the screw assembly (C) has a waist-shaped structure in the axial direction; In the mating structure with the cable clamp half (1), the waist section of the screw is located within the large diameter relief section (123) of the screw hole (12).

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