Variable angle transverse access support device for catwalks of suspension bridges and method of use

Abstract

The present application belongs to the technical field of suspension bridge installation, and particularly relates to a variable-angle transverse passage support device for a catwalk of a suspension bridge and a use method. The device comprises a truss transverse passage, an intermediate support is arranged below the truss transverse passage, tail end supports are respectively arranged on both sides of the intermediate support, the tail end supports comprise a first cross beam, a second cross beam, a third cross beam and a plurality of connecting longitudinal beams, a transverse passage connecting steel pipe is arranged above the second cross beam, a plurality of adjustable length steel pipe components are connected between the transverse passage connecting steel pipe and the second cross beam, a plurality of detachable lug components are respectively connected to the transverse passage connecting steel pipe and the first cross beam, rollers are arranged on the detachable lug components, and catwalk load bearing ropes are arranged below the rollers. The adjustable length steel pipe components are arranged between the detachable lug components to adapt to the horizontal included angle between the transverse passage and the catwalk load bearing ropes, so that the top surface of the transverse passage is always in a horizontal state, and the safety and comfort of construction work are ensured.

Description

Technical Field

[0001] This invention belongs to the field of suspension bridge installation technology, and specifically relates to a variable-angle lateral passage support device for a suspension bridge catwalk and its usage method. Background Technology

[0002] A suspension bridge, also known as a suspension bridge, is a bridge whose superstructure primarily consists of cables (or steel chains) suspended from towers and anchored to the banks (or both ends of the bridge). The geometry of the cables is determined by force equilibrium conditions and generally approximates a parabola. Numerous suspenders hang from the cables, supporting the bridge deck. Stiffening beams are often installed between the bridge deck and the suspenders, forming a combined system with the cables to reduce deflection caused by live loads.

[0003] A catwalk is a linear temporary construction path erected below and parallel to the main cable during the construction of a suspension bridge. It serves as high-altitude scaffolding for construction workers, acting as a construction platform for the main cable system and even the entire superstructure of the suspension bridge. Workers perform crucial tasks on it, such as cable strand pulling, strand adjustment, saddle shaping, cable tightening, cable clamp and sling installation, box girder hoisting and site connection, main cable winding, and protective coating. There is one catwalk upstream and one downstream; its cross-section is typically U-shaped, long and narrow, and somewhat swaying, hence the name "catwalk." It is an extremely important temporary facility during suspension bridge construction and will be dismantled after the bridge is completed.

[0004] The transverse passage of a catwalk facilitates communication between upstream and downstream catwalks, allows for the transfer of construction personnel, equipment, and materials, and improves the overall stability and wind resistance of the catwalk itself. It is perpendicular to the main cable. Traditional catwalk transverse passages use welded steel pipes or square steel pipes, requiring multiple sets of fixed transverse passage support devices to be fabricated along the catwalk curve. This results in drawbacks such as poor adaptability, complex manufacturing process, and high time consumption. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this invention is to provide a variable-angle transverse passage support device and its usage method for a suspension bridge catwalk. This device adapts to the horizontal angle between the transverse passage and the catwalk load-bearing rope at different positions of the catwalk by adding an adjustable-length steel pipe component between the detachable lifting lug components. This ensures that the top surface of the transverse passage is always horizontal, guaranteeing the safety and comfort of construction operations. The device is easy to install and dismantle, has a simple procedure, and can effectively accelerate the construction progress and significantly improve construction efficiency.

[0006] The technical solution of the present invention is as follows: a variable angle transverse passage support device for a suspension bridge catwalk, comprising a truss transverse passage, a middle support provided below the truss transverse passage, and tail end supports provided on both sides of the middle support. The tail end supports have an inverted triangular cross section and include a first crossbeam, a second crossbeam, a third crossbeam, and multiple connecting longitudinal beams connecting the first crossbeam, the second crossbeam, and the third crossbeam. The third crossbeam is located at the bottom of the tail end supports. The first crossbeam, the second crossbeam, and the third crossbeam are arranged in parallel. A transverse passage connecting steel pipe is provided above the second crossbeam. Multiple adjustable length steel pipe components are connected between the transverse passage connecting steel pipe and the second crossbeam. Multiple detachable lifting lug components are respectively connected between the transverse passage connecting steel pipe and the top of the first crossbeam. Rollers are provided on the detachable lifting lug components, and catwalk load-bearing ropes are provided below the rollers.

[0007] The truss transverse passage is equipped with guardrails on both sides along the passage extension direction, and the intermediate support and the tail support are connected by flanges.

[0008] Limiting rope clips are respectively installed on the catwalk load-bearing ropes on both sides of the roller.

[0009] The detachable lifting lug component includes an upper lifting lug assembly, which includes two parallel lug plates, with the rollers disposed between the lug plates.

[0010] The adjustable length steel pipe component includes, from top to bottom, an upper fixed end steel pipe, a middle movable end steel pipe, a lower fixed end steel pipe, and a limiting pin. The upper and lower ends of the middle movable end steel pipe are respectively inserted into the upper fixed end steel pipe and the lower fixed end steel pipe. The pipe walls of the upper fixed end steel pipe, the middle movable end steel pipe, and the lower fixed end steel pipe are respectively provided with multiple positioning holes. The upper and lower ends of the middle movable end steel pipe are respectively inserted into the upper fixed end steel pipe and the lower fixed end steel pipe through the limiting pin.

[0011] A clamping ring is provided between the detachable lifting lug component and the adjustable length steel pipe component, between the adjustable length steel pipe component and the second crossbeam, and between the detachable lifting lug component and the first crossbeam. The clamping ring includes an upper clamping ring and a lower clamping ring, and the upper clamping ring and the lower clamping ring are fastened together by bolts.

[0012] A method for using a variable-angle lateral passage support device for a suspension bridge catwalk, comprising the following steps:

[0013] S1: When installing the truss transverse passage, adjust the length of the adjustable-length steel pipe component according to the design angle;

[0014] S2: Vertically lift the entire truss transverse passage to the position of the catwalk load-bearing rope, install the rollers, and then slide it down to the design position;

[0015] S3: After reaching the design position, use a limit rope clamp to lock the catwalk load-bearing rope to achieve longitudinal limitation of the truss transverse passage.

[0016] In step S1, the adjustable length steel pipe component is adjusted to adapt to the horizontal angle between the truss transverse passage and the catwalk load-bearing rope at different positions of the catwalk, so that the top surface of the truss transverse passage is always horizontal.

[0017] In step S2, when the entire truss transverse passage is vertically lifted to the position of the catwalk load-bearing rope, the transverse passage connecting steel pipe moves laterally along the first and second crossbeams on the top surface of the tail end support through the detachable lifting lugs. By setting the detachable lifting lugs, it can accommodate different numbers and spacings of catwalk load-bearing ropes.

[0018] The technical advantages of this invention are as follows: 1. By setting an adjustable-length steel pipe component, compared with the traditional fixed welded transverse channel connecting steel pipe, this invention can precisely adjust the horizontal angle between the transverse channel and the catwalk load-bearing rope, thereby ensuring the horizontal surface of the transverse channel and guaranteeing the safety and comfort of construction operations; 2. By setting a detachable lifting lug component, compared with the traditional fixed welded transverse channel connecting steel pipe, this invention can adapt to different numbers and spacings of catwalk load-bearing ropes, thereby ensuring its versatility and the replaceability of individual parts; 3. Compared with the traditional fixed welded transverse channel connecting steel pipe, this invention uses rollers to make the transverse channel slide smoothly and conveniently, and sets limit rope clamps to restrict the longitudinal bridge displacement of the transverse channel, making its construction operation simple and highly flexible; the limit rope clamps can use national standard rope clamps, which are widely available and reliable in quality; 4. Compared with the traditional fixed welded transverse channel connecting steel pipe, this invention uses standardized components, parts, and components to achieve wider applicability, which can significantly save steel and promote recycling.

[0019] The following will provide further explanation in conjunction with the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a front view of a variable-angle lateral passage support device for a suspension bridge catwalk according to an embodiment of the present invention.

[0021] Figure 2 This is a top view of a variable-angle lateral passage support device for a catwalk on a suspension bridge, according to an embodiment of the present invention.

[0022] Figure 3 This is a three-dimensional schematic diagram of the connection between the tail support of a variable-angle lateral passage support device for a suspension bridge catwalk and the catwalk load-bearing rope, according to an embodiment of the present invention.

[0023] Figure 4 for Figure 3 Top view.

[0024] Figure 5 for Figure 3 Side view.

[0025] Figure 6 for Figure 5 AA section view in the image.

[0026] Figure 7 This is a three-dimensional exploded view of the detachable lifting lug component of a catwalk variable angle transverse passage support device structure for a suspension bridge according to an embodiment of the present invention.

[0027] Figure 8 This is a three-dimensional structural diagram of an adjustable-length steel pipe component of a catwalk support device for a suspension bridge according to an embodiment of the present invention.

[0028] Figure 9 This is a three-dimensional exploded view of the upper part of the adjustable-length steel pipe component of a catwalk support device structure for a suspension bridge according to an embodiment of the present invention.

[0029] Figure 10 This is a three-dimensional exploded view of the lower part of the adjustable-length steel pipe component of a catwalk support device structure for a suspension bridge according to an embodiment of the present invention.

[0030] Figure 11 This is a three-dimensional structural diagram of a variable-angle lateral passage support device for a suspension bridge catwalk according to an embodiment of the present invention.

[0031] Reference numerals: 1-Truss transverse passage; 2-Guardrail; 3-Intermediate support; 4-Tail support; 41-First crossbeam; 42-Second crossbeam; 43-Third crossbeam; 44-Connecting longitudinal beam; 5-Transverse passage connecting steel pipe; 6-Adjustable length steel pipe component; 61-Upper fixed end steel pipe; 62-Intermediate movable end steel pipe; 63-Lower fixed end steel pipe; 7-Detachable lifting lug component; 71-Upper lifting lug assembly; 72-Ear plate; 8-Roller; 9-Limiting rope clamp; 10-Catway load-bearing rope; 11-Limiting pin; 12-Clamping ring; 121-Upper half clamping ring; 122-Lower half clamping ring. Detailed Implementation

[0032] Example 1

[0033] like Figures 1-6As shown, a variable-angle transverse passage support device for a suspension bridge catwalk includes a truss transverse passage 1. A middle support 3 is located below the truss transverse passage 1. Tail-end supports 4 are located on both sides of the middle support 3. The tail-end supports 4 have an inverted triangular cross-section and include a first crossbeam 41, a second crossbeam 42, a third crossbeam 43, and multiple connecting longitudinal beams 44 connecting the first crossbeam 41, the second crossbeam 42, and the third crossbeam 43. The third crossbeam 43 is located at the bottom of the tail-end supports 4. The first crossbeam 41, the second crossbeam 42, and the third crossbeam 43 are arranged in parallel. A transverse passage connecting steel pipe 5 is located above the second crossbeam 42. Multiple adjustable-length steel pipe components 6 are connected between the transverse passage connecting steel pipe 5 and the second crossbeam 42. Multiple detachable lifting lug components 7 are connected between the transverse passage connecting steel pipe 5 and the first crossbeam 41. Rollers 8 are provided on the detachable lifting lug components 7, and catwalk load-bearing ropes 10 are located below the rollers 8.

[0034] In actual use, when the truss transverse passage 1 is installed, the length of the adjustable-length steel pipe component 6 is adjusted according to the design angle; the entire truss transverse passage 1 is vertically lifted to the position of the catwalk load-bearing rope 10, and after the rollers 8 are installed, it slides down to the design position; by adjusting the adjustable-length steel pipe component 6, the horizontal angle between the truss transverse passage 1 and the catwalk load-bearing rope 10 at different positions of the catwalk is adapted, so that the top surface of the truss transverse passage 1 is always in a horizontal state. When the entire truss transverse passage 1 is vertically lifted to the position of the catwalk load-bearing rope 10, the transverse passage connecting steel pipe 5 moves laterally along the first crossbeam 41 and the second crossbeam 42 on the top surface of the tail end bracket 4 through the detachable lifting lug component 7. By setting the detachable lifting lug component 7, it can adapt to different numbers and spacings of catwalk load-bearing ropes 10. The transverse channel connecting steel pipe 5 is used to prevent uneven stress on the connecting components of the transverse channel connecting steel pipe 5 due to inconsistent transverse height of the catwalk load-bearing rope 10 under vertical load, and at the same time enhances the transverse stiffness of the overall structure. It is used in conjunction with the adjustable length steel pipe component 6.

[0035] Example 2

[0036] Preferably, based on Embodiment 1, in this embodiment, the truss transverse channel 1 is provided with guardrails 2 on both sides along the channel extension direction, and the intermediate support 3 and the tail support 4 are connected by flanges.

[0037] In actual use, the truss transverse passage 1 of the present invention is equipped with guardrails 2 on both sides along the extension direction of the passage, which facilitates the safety of construction personnel working at height. The intermediate support 3 and the tail support 4 are connected by flanges, which makes the connection convenient and quick.

[0038] Example 3

[0039] Preferably, based on Embodiment 1 or Embodiment 2, in this embodiment, limiting rope clips 9 are respectively provided on the cat walkway load-bearing ropes 10 on both sides of the roller 8.

[0040] In actual use, the present invention uses a limiting rope clip 9 to hold the catwalk load-bearing rope 10 to achieve longitudinal limiting of the truss transverse passage 1. Its construction operation is simple and highly flexible. The limiting rope clip can be a national standard rope clip, which is widely available and of reliable quality.

[0041] Example 4

[0042] Preferably, based on Example 1 or Example 3, in this example, as Figure 7 As shown, the detachable lifting lug component 7 includes an upper lifting lug assembly 71, which includes two parallel lug plates 72, with the roller 8 disposed between the lug plates 72.

[0043] In actual use, the present invention vertically lifts the entire truss transverse channel 1 to the position of the catwalk load-bearing rope 10, installs the rollers 8, and then slides it down to the designed position.

[0044] Example 5

[0045] Preferably, based on Example 1 or Example 4, in this example, as Figures 8-10 As shown, the adjustable length steel pipe component 6 includes, from top to bottom, an upper fixed end steel pipe 61, a middle movable end steel pipe 62, a lower fixed end steel pipe 63, and a limiting pin 11. The upper and lower ends of the middle movable end steel pipe 62 are respectively inserted into the upper fixed end steel pipe 61 and the lower fixed end steel pipe 63. The pipe walls of the upper fixed end steel pipe 61, the middle movable end steel pipe 62, and the lower fixed end steel pipe 63 are respectively provided with multiple positioning holes. The upper and lower ends of the middle movable end steel pipe 62 are respectively inserted into the upper fixed end steel pipe 61 and the lower fixed end steel pipe 63 through the limiting pin 11.

[0046] In actual use, the present invention achieves precise positioning of the truss transverse channel 1 by the relative movement between the upper fixed end steel pipe 61, the lower fixed end steel pipe 63 and the middle movable steel pipe 62 and the limiting pin 11; and achieves rough positioning of the truss transverse channel 1 by setting the middle movable steel pipe 62 standard part according to the horizontal angle between the commonly used truss transverse channel 1 and the catwalk load-bearing rope 10. The positioning is simple, accurate and convenient to operate.

[0047] Example 6

[0048] Preferably, based on Embodiment 1 or Embodiment 5, in this embodiment, a clamping ring 12 is provided between the detachable lifting lug component 7 and the adjustable length steel pipe component 6, between the adjustable length steel pipe component 6 and the second crossbeam 42, and between the detachable lifting lug component 7 and the first crossbeam 41. The clamping ring 12 includes an upper clamping ring 121 and a lower clamping ring 122, and the upper clamping ring 121 and the lower clamping ring 122 are fastened together by bolts.

[0049] In actual use, the detachable lifting lug component 7 and the adjustable length steel pipe component 6 of the present invention are provided with a clamping ring 12. The truss transverse channel 1 is limited in three directions by bolt connection of the clamping ring 12. The connection is simple and the disassembly is convenient.

[0050] Example 7

[0051] A method for using a variable-angle lateral passage support device for a catwalk on a suspension bridge, such as... Figure 11 As shown, using a variable-angle lateral passage support device for a suspension bridge catwalk as described above includes the following steps:

[0052] S1: When installing the truss transverse channel 1, the length of the adjustable length steel pipe component 6 is adjusted according to the design angle;

[0053] S2: Vertically lift the entire truss transverse passage 1 to the position of the catwalk load-bearing rope 10, install the rollers 8, and then slide it down to the design position;

[0054] S3: After reaching the design position, use the limit rope clip 9 to lock the catwalk load-bearing rope 10 to achieve longitudinal limitation of the truss transverse passage 1.

[0055] In step S1, the adjustable length steel pipe component 6 is adjusted to adapt to the horizontal angle between the truss transverse passage 1 and the catwalk load-bearing rope 10 at different positions of the catwalk, so that the top surface of the truss transverse passage 1 is always in a horizontal state.

[0056] In step S2, when the truss transverse passage 1 is vertically lifted to the position of the catwalk load-bearing rope 10, the transverse passage connecting steel pipe 5 moves laterally along the first crossbeam 41 and the second crossbeam 42 on the top surface of the tail end support 4 through the detachable lifting lug component 7. By setting the detachable lifting lug component 7, it can adapt to different numbers and spacings of catwalk load-bearing ropes 10.

[0057] This invention provides a variable-angle transverse passage support device for a suspension bridge catwalk. Compared to traditional fixed welded transverse passage connecting steel pipes, it uses standardized components, parts, and components to achieve wider applicability, significantly saving steel and enabling recycling. By setting adjustable-length steel pipe components 6, not only can the horizontal angle between the truss transverse passage 1 and the catwalk load-bearing rope 10 be coarsely adjusted, but also finely adjusted, thereby ensuring the top surface of the truss transverse passage 1 is level and guaranteeing the safety and comfort of construction operations. By setting detachable lifting lug components 7, it can adapt to different numbers and spacings of catwalk load-bearing ropes 10, thereby ensuring its versatility and the replaceability of individual parts. Rollers 8 facilitate the smooth and convenient descent of the truss transverse passage 1. By setting limiting rope clamps 9 to restrict the longitudinal displacement of the truss transverse passage 1, its construction operation is simple and highly flexible. The limiting rope clamps 9 can use national standard rope clamps, which are widely available and of reliable quality.

[0058] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Components and structures not described in detail in this embodiment are well-known components and common structures or common means in the industry, and will not be described in detail here.

Claims

1. A variable-angle lateral passage support device for a catwalk of a suspension bridge, characterized in that: The structure includes a truss transverse passage (1), with an intermediate support (3) below the truss transverse passage (1). Tail end supports (4) are located on both sides of the intermediate support (3). The tail end supports (4) have an inverted triangular cross-section and include a first crossbeam (41), a second crossbeam (42), a third crossbeam (43), and multiple connecting longitudinal beams (44) connecting the first crossbeam (41), the second crossbeam (42), and the third crossbeam (43). The third crossbeam (43) is located at the bottom of the tail end supports (4). The first crossbeam (41), the second crossbeam (42), and the third crossbeam (43) are arranged in parallel. A transverse passage connecting steel pipe (5) is located above the second crossbeam (42). Multiple adjustable-length steel pipe components (6) are connected between the transverse passage connecting steel pipe (5) and the second crossbeam (42). The pipe (5) is connected to the top of the first crossbeam (41) by a plurality of detachable lifting lugs (7). The detachable lifting lugs (7) are provided with rollers (8). The cat walkway load-bearing rope (10) is provided below the rollers (8). The adjustable length steel pipe component (6) includes, from top to bottom, an upper fixed end steel pipe (61), a middle movable end steel pipe (62), a lower fixed end steel pipe (63) and a limiting pin (11). The upper and lower ends of the middle movable end steel pipe (62) are respectively inserted into the upper fixed end steel pipe (61) and the lower fixed end steel pipe (63). The pipe walls of the upper fixed end steel pipe (61), the middle movable end steel pipe (62) and the lower fixed end steel pipe (63) are respectively provided with a plurality of positioning holes. The upper and lower ends of the middle movable end steel pipe (62) are respectively connected to the upper fixed end steel pipe (61) and the lower fixed end steel pipe (63) through the limiting pin (11).

2. The variable-angle lateral passage support device for a suspension bridge catwalk according to claim 1, characterized in that: The truss transverse passage (1) is provided with guardrails (2) on both sides along the extension direction of the passage, and the intermediate support (3) and the tail support (4) are connected by flanges.

3. The variable-angle lateral passage support device for a suspension bridge catwalk according to claim 1, characterized in that: Limiting rope clips (9) are respectively provided on the cat walk load-bearing ropes (10) on both sides of the roller (8).

4. The variable-angle lateral passage support device for a suspension bridge catwalk according to claim 1, characterized in that: The detachable lifting lug component (7) includes an upper lifting lug assembly (71), which includes two parallel lug plates (72), and the roller (8) is provided between the lug plates (72).

5. The variable-angle lateral passage support device for a suspension bridge catwalk according to claim 1, characterized in that: A clamping ring (12) is provided between the detachable lifting lug component (7) and the adjustable length steel pipe component (6), between the adjustable length steel pipe component (6) and the second crossbeam (42), and between the detachable lifting lug component (7) and the first crossbeam (41). The clamping ring (12) includes an upper clamping ring (121) and a lower clamping ring (122), and the upper clamping ring (121) and the lower clamping ring (122) are fastened together by bolts.

6. A method of using a variable-angle lateral passage support device for a suspension bridge catwalk, comprising using a variable-angle lateral passage support device for a suspension bridge catwalk as described in any one of claims 1 to 5, characterized in that: Includes the following steps: S1: When installing the truss transverse passage (1), the length of the adjustable length steel pipe component (6) is adjusted according to the design angle; S2: The entire truss transverse passage (1) is vertically lifted to the position of the catwalk load-bearing rope (10), and after installing the rollers (8), it slides down to the design position; S3: After reaching the design position, use the limiting rope clamp (9) to clamp the cat walkway load-bearing rope (10) to achieve longitudinal limitation of the truss transverse passage (1).

7. The method of using the variable-angle lateral passage support device for a suspension bridge catwalk according to claim 6, characterized in that: In step S1, the adjustable length steel pipe component (6) is adjusted to adapt to the horizontal angle between the truss transverse passage (1) and the catwalk load-bearing rope (10) at different positions of the catwalk, so that the top surface of the truss transverse passage (1) is always in a horizontal state.

8. The method of using the variable-angle lateral passage support device for a suspension bridge catwalk according to claim 6, characterized in that: In step S2, when the truss transverse channel (1) is vertically lifted to the position of the catwalk load-bearing rope (10), the transverse channel connecting steel pipe (5) moves laterally along the first crossbeam (41) and the second crossbeam (42) on the top surface of the tail end support (4) through the detachable lifting lug component (7). By setting the detachable lifting lug component (7), it can adapt to different numbers and spacings of catwalk load-bearing ropes (10).

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