Catwalk system

Abstract

The present invention belongs to the field of bridge construction, and specifically discloses a catwalk system, including a wind-resistant component, which includes two upper guide cables respectively located on both sides above the surface layer, two lower guide cables respectively located on both sides below the surface layer, an upper wind-resistant cable for connecting the upper guide cables and handrail cables, and a lower wind-resistant cable for connecting the lower guide cables and handrail cables; the two ends of the upper wind-resistant cable are respectively detachably connected to the handrail cables on both sides of the surface layer, the middle part of the upper wind-resistant cable is detachably connected to one of the upper guide cables, and adjacent upper wind-resistant cables are connected to different upper guide cables; the lower wind-resistant cable and the upper wind-resistant cable are arranged one by one, the two ends of the lower wind-resistant cable are respectively detachably connected to the handrail cables on both sides of the surface layer, the middle part of the lower wind-resistant cable is detachably connected to one of the lower guide cables, and the lower guide cable connected to the lower wind-resistant cable and the upper guide cable connected to the corresponding upper wind-resistant cable are located on the opposite sides of the surface layer. The solution of the present invention can solve the problem of unstable wind-resistant performance of the catwalk.

Description

Technical Field

[0001] The invention belongs to the field of bridge construction, and in particular relates to a catwalk system. Background Art

[0002] As the most important high-altitude working channel and temporary construction platform for the construction of the upper structure of the suspension bridge, the catwalk is erected under the main cable and arranged in a linear manner parallel to the main cable. During the entire construction of the upper part of the suspension bridge, cable strand pulling, cable strand adjustment, main cable tightening, cable clamp and sling installation, main beam hoisting, main cable winding and protection and other construction operations must be completed on the catwalk. The catwalk is an important temporary facility in the construction of the suspension bridge. The construction process is complex. Its linear shape, structural safety, and wind resistance stability will affect the quality, progress and construction safety of each major sub-process of the entire upper structure construction. Among them, for the wind resistance stability of the catwalk, it is necessary to collect a variety of information such as wind characteristics and wind speed at the bridge site before construction. However, in the case of a complex wind field environment, it is still impossible to accurately determine the stability of the catwalk under the action of wind loads during construction.

[0003] Based on the above problems, the prior art often adds wind-resistant cables to the catwalk. For example, patent CN202220480545.7 discloses a wind-resistant system for a catwalk, which sets a horizontal wind-resistant cable on the lower side of the catwalk and connects the wind-resistant cable to the catwalk through a hanger. The wind-resistant cable is tensioned to make it relatively fixed, and then the catwalk is limited to increase the wind-resistant stability of the catwalk. However, the stability of the wind-resistant cable is mainly limited by the tension of the wind-resistant cable. When the wind-resistant cable is relatively loose, it will shake together with the catwalk through the hanger under the action of wind force. If the wind-resistant cable is too tight, it is also easy to be damaged, resulting in a high difficulty in erecting the wind-resistant cable. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a catwalk system to solve the problem that the stability of the wind-resistant cables is mainly limited by the tensioning degree of the wind-resistant cables, resulting in high difficulty in erecting the wind-resistant cables.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A catwalk system comprises a catwalk component and a wind-resistant component. The catwalk component comprises a surface layer, a load-bearing cable for supporting the surface layer, handrail cables arranged on both sides of the surface layer, and anchors for installation at both ends of the surface layer; the wind-resistant component comprises two upper guide cables respectively located on both sides above the surface layer, two lower guide cables respectively located on both sides below the surface layer, an upper wind-resistant cable for connecting the upper guide cables and the handrail cables, and a lower wind-resistant cable for connecting the lower guide cables and the handrail cables; the two ends of the upper wind-resistant cable are respectively detachably connected to the handrail cables on both sides of the surface layer, the middle part of the upper wind-resistant cable is detachably connected to one of the upper guide cables, and adjacent upper wind-resistant cables are connected to different upper guide cables; the lower wind-resistant cable and the upper wind-resistant cable are arranged in one-to-one correspondence, the two ends of the lower wind-resistant cable are respectively detachably connected to the handrail cables on both sides of the surface layer, the middle part of the lower wind-resistant cable is detachably connected to one of the lower guide cables, and the lower guide cable connected to the lower wind-resistant cable and the upper guide cable connected to the corresponding upper wind-resistant cable are located on the opposite sides of the surface layer.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] The corresponding upper wind-resistant cables and lower wind-resistant cables form a set of wind-resistant parts. Through the coordinated setting of the upper wind-resistant cables and the lower wind-resistant cables, the upper and lower parts of the catwalk components are limited. The catwalk is limited in multiple directions, which improves the stability of the catwalk. Even if the upper wind-resistant cables, the upper guide cables or the lower wind-resistant cables, the lower guide cables are not properly tensioned, for example, the tension of the upper wind-resistant cables or the upper guide cables is insufficient, the catwalk is still limited by the lower wind-resistant cables, which improves the stability of the catwalk and reduces the difficulty of operation.

[0009] Since the lower guide cable connected to the lower wind-resistant cable and the upper guide cable connected to the corresponding upper wind-resistant cable are located on the opposite sides of the surface layer, the overall shape of a group of wind-resistant components is inclined. For example, the upper wind-resistant cable is connected to the upper guide cable on the left side, and the lower wind-resistant cable is connected to the lower guide cable on the right side. When the catwalk assembly is subjected to wind force from the left side, the upper wind-resistant cable is first subjected to wind force to the right, and the upper side of the catwalk assembly is subjected to the force to the right and has a deflection trend. With the catwalk assembly as the center point, the catwalk assembly will drive the lower wind-resistant cable to have a deflection trend to the left, but the lower wind-resistant cable is still subjected to wind force to the right and cannot deflect. Therefore, the coordinated action of a group of wind-resistant components can improve the wind-resistant stability of the catwalk assembly and reduce the influence of the tension of the upper wind-resistant cable, the upper guide cable, the lower wind-resistant cable or the lower guide cable. The inclined states of the two adjacent groups of wind-resistant components are opposite, forming an X-shaped distribution, which further improves the stability of the catwalk when subjected to wind loads from different directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0011] Figure 2 for Figure 1 Enlarged view of part A.

[0012] Figure 3 for Figure 1 Schematic diagram of the structure of the middle and upper wind-resistant cables.

[0013] Figure 4 It is a side view of an embodiment of the present invention.

[0014] Figure 5 Schematic diagram of the structure of the lower wind-resistant cable in an embodiment of the present invention.

[0015] In the figure: 1. surface layer; 2. side net; 3. handrail cable; 4. load-bearing cable; 5. horizontal channel; 6. upper guide cable; 7. hook; 8. upper wind-resistant cable; 9. lower guide cable; 10. lower wind-resistant cable; 11. hook body; 12. limit block; 13. steel cable segment; 14. ring; 15. connecting hook; 16. bracket; 17. upper adjusting block; 18. lower adjusting block; 19. upper adjusting cylinder; 20. lower adjusting cylinder; 21. vertical rod; 22. adjusting plate; 23. adjusting hole; 24. adjusting cavity; 25. gear; 26. second rack. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below with reference to the accompanying drawings, and specific implementation methods are given.

[0017] like Figure 1 As shown, the catwalk system includes a catwalk component and a wind-resistant component. The catwalk component includes a surface layer 1, a load-bearing cable 4 for supporting the surface layer 1, a handrail cable 3 arranged on the side of the surface layer 1, and anchors for installing at both ends of the surface layer 1. There are two groups of catwalk components, which are respectively located on the upstream and downstream sides of the bridge. A transverse channel 5 is connected between the surface layers 1 of the two groups of catwalk components. There are multiple transverse channels 5 along the length direction of the surface layer 1. On the one hand, the transverse channels 5 connect the surface layers 1 on both sides to facilitate the travel of staff. On the other hand, the surface layers 1 on both sides are limited to each other, thereby improving the stability of the catwalk component. Side nets 2 are arranged on both sides of the surface layer 1, and the handrail cables 3 are used to limit the side nets 2. The specific structure and installation method of the catwalk component, and the specific structure and installation method of the anchor are all existing technologies. After the catwalk component is constructed according to the existing technology, the wind-resistant component is constructed.

[0018] The wind-resistant assembly includes two upper guide cables 6 respectively located on both sides above the surface layer 1, two lower guide cables 9 respectively located on both sides below the surface layer 1, an upper wind-resistant cable 8 for connecting the upper guide cables 6 and the handrail cable 3, a lower wind-resistant cable 10 for connecting the lower guide cables 9 and the handrail cable 3, and a bracket 16 for installing the upper guide cables 6 and the lower guide cables 9. Two brackets 16 are provided, which are respectively used to install the two ends of the upper guide cables 6 and the lower guide cables 9.

[0019] The two ends of the upper wind-resistant cable 8 are detachably connected to the handrail cables 3 on both sides of the surface layer 1, the middle part of the upper wind-resistant cable 8 is detachably connected to one of the upper guide cables 6, and the adjacent upper wind-resistant cables 8 are connected to different upper guide cables 6. The lower wind-resistant cable 10 and the upper wind-resistant cable 8 are arranged one by one, the two ends of the lower wind-resistant cable 10 are detachably connected to the handrail cables 3 on both sides of the surface layer 1, the middle part of the lower wind-resistant cable 10 is detachably connected to one of the lower guide cables 9, and the lower guide cable 9 connected to the lower wind-resistant cable 10 and the upper guide cable 6 connected to the corresponding upper wind-resistant cable 8 are located on the opposite sides of the surface layer 1. The handrail cable 3 is vertically provided with two layers, the upper wind-resistant cable 8 is connected to the handrail cable 3 of the upper layer, and the lower wind-resistant cable 10 is connected to the handrail cable 3 of the lower layer.

[0020] The upper wind-resistant cable 8 and the lower wind-resistant cable 10 both include a steel cable segment 13 and chain segments connected to both sides of the steel cable segment 13. The connection method between the upper wind-resistant cable 8 and the handrail cable 3 is the same as the connection method between the lower wind-resistant cable 10 and the handrail cable 3, which is as follows: Figure 3 As shown, the chain segment is used to connect with the handrail cable 3, and the chain segment includes a plurality of circular rings 14 that are interlocked with each other. The handrail cable 3 is provided with a connecting hook 15 for connecting with the circular rings 14. Taking the connection between the upper wind-resistant cable 8 and the handrail cable 3 as an example, the circular ring 14 of the upper wind-resistant cable 8 can be hung on the connecting hook 15, and the tension of the upper wind-resistant cable 8 can be adjusted by connecting different circular rings 14 and connecting hooks 15.

[0021] The connection method of the upper wind-resistant cable 8 and the upper guide cable 6 is the same as the connection method of the lower wind-resistant cable 10 and the lower guide cable 9, which is as follows: the steel cable segment 13 is used to connect with the upper guide cable 6 or the lower guide cable 9, combined with Figure 2 As shown, the upper wind-resistant cable 8 and the lower wind-resistant cable 10 are both fixed with a hook 7, the hook 7 is used to be hung on the upper guide cable 6 or the lower guide cable 9, the hook 7 includes a hook body 11 and a limit block 12 connected to the hook body 11 in a vertical sliding manner, the limit block 12 is used to abut against the upper guide cable 6 or the lower guide cable 9, and a micro cylinder for driving the limit block 12 to slide is installed on the hook body 11. Taking the connection between the upper wind-resistant cable 8 and the upper guide cable 6 as an example, after the hook body 11 is hung upward on the upper guide cable 6, the limit block 12 is slid so that the limit block 12 and the upper guide cable 6 abut against each other to prevent the hook body 11 from moving on the upper guide cable 6.

[0022] During specific use, after the catwalk assembly is constructed according to the existing technology, the wind-resistant assembly is constructed, two upper guide cables 6 are set above the catwalk assembly, and two lower guide cables 9 are set below the catwalk assembly. Then the upper wind-resistant cable 8 and the lower wind-resistant cable 10 are first connected to the handrail cable 3, and then the middle part of the upper wind-resistant cable 8 is lifted upward so that the hook 7 on the upper wind-resistant cable 8 is hooked onto the upper guide cable 6, and the middle part of the lower wind-resistant cable 10 is pushed downward so that the hook 7 on the lower wind-resistant cable 10 is hooked onto the lower guide cable 9, and the construction is completed.

[0023] In another embodiment of the present invention, Figure 4 As shown, in order to adjust the tension of the upper guide rope 6 and the lower guide rope 9, the bracket 16 is provided with an adjusting member for adjusting the tension of the upper guide rope 6 and the lower guide rope 9, and the adjusting member includes an upper adjusting block 17 and a lower adjusting block 18. The two upper guide ropes 6 are connected to the upper adjusting block 17, and the two lower guide ropes 9 are connected to the lower adjusting block 18. The upper adjusting block 17 and the lower adjusting block 18 are both slidably connected to the bracket 16, and a cylinder for driving the upper adjusting block 17 and the lower adjusting block 18 to slide is installed on the bracket 16. By driving the upper adjusting block 17 and the lower adjusting block 18 to slide, the upper guide rope 6 and the lower guide rope 9 are tightened or loosened. The upper guide rope 6 is connected to the upper adjusting block 17, and the lower guide rope 9 is connected to the lower adjusting block 18. Therefore, the tension of the two upper guide ropes 6 can be adjusted at the same time, and the tension of the two lower guide ropes 9 can also be adjusted at the same time.

[0024] An upper adjustment cylinder 19 for connecting with the upper adjustment block 17 is fixed at the end of the upper guide cable 6, and the upper adjustment cylinder 19 is slidably connected to the upper adjustment block 17; a lower adjustment cylinder 20 for connecting with the lower adjustment block 18 is fixed at the end of the lower guide cable 9, and the lower adjustment cylinder 20 is slidably connected to the lower adjustment block 18. By sliding the upper adjustment cylinder 19 on the upper adjustment block 17 and the lower adjustment cylinder 20 on the lower adjustment block 18, the tension of one of the upper guide cables 6 or the lower guide cable 9 can be adjusted separately. A cylinder for driving the upper adjustment cylinder 19 to slide is installed on the upper adjustment block 17, and a cylinder for driving the lower adjustment cylinder 20 is installed on the lower adjustment block 18.

[0025] In another embodiment of the present invention, when the upper guide cable 6 is connected to the upper wind-resistant cable 8 and the state is relatively loose, it is only necessary to tighten the upper guide cable 6, and the upper guide cable 6 can drive the upper wind-resistant cable 8 to move upward, and the upper wind-resistant cable 8 is also tightened. However, when the lower guide cable 9 is tightened, the lower guide cable 9 drives the lower wind-resistant cable 10 to move upward, and the lower wind-resistant cable 10 will become looser. For this reason, the following design is made in this embodiment:

[0026] Combination Figure 5As shown, an adjustment plate 22 for adjusting the tension of the lower wind-resistant cable 10 is fixed in the middle of the lower wind-resistant cable 10. The adjustment plate 22 is connected to the lower wind-resistant cable 10 and is located on both sides of the hook 7. The adjustment plate 22, the hook 7, and the lower wind-resistant cable 10 form a triangle in an unadjusted state. Adjustment holes 23 for the lower wind-resistant cable 10 to pass through are provided on both sides of the adjustment plate 22. The end of the lower wind-resistant cable 10 facing away from the hook 7 is fixed to the adjustment hole 23, and the end of the lower wind-resistant cable 10 facing the hook 7 is not connected to the adjustment hole 23. An adjustment cavity 24 connected to the adjustment holes 23 on both sides is opened in the adjustment plate 22. A vertical rod 21 is fixed on the hook body 11 of the hook 7. The vertical rod 21 passes through the adjustment plate 22 and is slidably connected to the adjustment plate 22. First racks are fixed on both sides of the vertical rod 21. A gear 25 is rotatably connected in the adjustment cavity 24. A second rack 26 is slidably connected in the adjustment hole 23. The gear 25 is located between the first rack and the second rack 26 and meshes with the first rack and the second rack 26. The lower end of the second rack 26 abuts against the lower wind-resistant cable 10.

[0027] During specific use, when the lower guide rope 9 is tensioned, the lower guide rope 9 drives the middle part of the lower wind-resistant rope 10 to move upward through the limit block 12 and the hook body 11, and the hook body 11 drives the vertical rod 21 to move upward, and the first rack, the gear 25 and the second rack 26 are engaged for transmission. When the vertical rod 21 moves upward, the second rack 26 moves downward, and the second rack 26 resists the lower wind-resistant rope 10 that is loosened due to the upward movement of the hook 7, and presses this part of the lower wind-resistant rope 10 downward.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A catwalk system, comprising a catwalk assembly and a wind-resistant assembly, wherein the catwalk assembly comprises a surface layer, a load-bearing cable for supporting the surface layer, handrail cables arranged on both sides of the surface layer, and anchors for installing at both ends of the surface layer; characterized in that: The wind-resistant assembly comprises two upper guide cables respectively located on both sides above the surface layer, two lower guide cables respectively located on both sides below the surface layer, an upper wind-resistant cable for connecting the upper guide cables and the handrail cables, and a lower wind-resistant cable for connecting the lower guide cables and the handrail cables; the two ends of the upper wind-resistant cable are respectively detachably connected to the handrail cables on both sides of the surface layer, the middle part of the upper wind-resistant cable is detachably connected to one of the upper guide cables, and adjacent upper wind-resistant cables are connected to different upper guide cables; the lower wind-resistant cable and the upper wind-resistant cable are arranged in one-to-one correspondence, the two ends of the lower wind-resistant cable are respectively detachably connected to the handrail cables on both sides of the surface layer, the middle part of the lower wind-resistant cable is detachably connected to one of the lower guide cables, and the lower guide cable connected to the lower wind-resistant cable and the upper guide cable connected to the corresponding upper wind-resistant cable are located on the opposite sides of the surface layer; It also includes a bracket for installing the upper guide rope and the lower guide rope, the bracket is provided with an adjusting piece for adjusting the tension of the upper guide rope and the lower guide rope, the adjusting piece includes an upper adjusting block and a lower adjusting block, the two upper guide ropes are connected to the upper adjusting block, the two lower guide ropes are connected to the lower adjusting block, the upper adjusting block and the lower adjusting block are both slidably connected to the bracket; the end of the upper guide rope is fixed with an upper adjusting cylinder for connecting with the upper adjusting block, and the upper adjusting cylinder is slidably connected to the upper adjusting block; the end of the lower guide rope is fixed with a lower adjusting cylinder for connecting with the lower adjusting block, and the lower adjusting cylinder is slidably connected to the lower adjusting block.

2. The catwalk system according to claim 1, characterized in that: The handrail cable is vertically provided with two layers, the upper wind-resistant cable is connected to the handrail cable of the upper layer, and the lower wind-resistant cable is connected to the handrail cable of the lower layer.

3. The catwalk system according to claim 1, characterized in that: The catwalk components are provided in two groups, and are respectively located on the upstream side and the downstream side of the bridge. A transverse channel is connected between the surface layers of the two groups of catwalk components, and a plurality of transverse channels are provided along the length direction of the surface layer.

4. The catwalk system according to claim 1, characterized in that: Side nets are arranged on both sides of the surface layer, and handrail cables are used to limit the side nets.

5. The catwalk system according to claim 1, characterized in that: The upper wind-resistant cable and the lower wind-resistant cable both include a steel cable segment and a chain segment connected to both sides of the steel cable segment. The steel cable segment is used to connect with the upper guide cable or the lower guide cable, and the chain segment is used to connect with the handrail cable. The chain segment includes a plurality of circular rings interlocked with each other.

6. The catwalk system according to claim 5, characterized in that: The upper wind-resistant cable and the lower wind-resistant cable are both fixed with hooks, which are used to be hung on the upper guide cable or the lower guide cable; the handrail cable is provided with a connecting hook for connecting with the ring.

7. The catwalk system according to claim 6, characterized in that: The hook comprises a hook body and a limit block connected to the hook body in a vertical sliding direction, and the limit block is used to abut against the upper guide rope or the lower guide rope.

8. The catwalk system according to claim 6, characterized in that: An adjusting plate for adjusting the tension of the lower wind-resistant cable is fixed in the middle of the lower wind-resistant cable, the adjusting plate is connected to the lower wind-resistant cable and is located on both sides of the hook, and the adjusting plate, the hook and the lower wind-resistant cable form a triangle in an unadjusted state; adjusting holes for the lower wind-resistant cable to pass through are provided on both sides of the adjusting plate, and one end of the lower wind-resistant cable facing away from the hook is fixed to the adjusting hole; an adjusting cavity connected to the adjusting holes on both sides is provided in the adjusting plate, a vertical rod is fixed on the hook, the vertical rod passes through the adjusting plate and is slidably connected to the adjusting plate, a first rack is fixed on both sides of the vertical rod, a gear is rotatably connected in the adjusting cavity, a second rack is slidably connected in the adjusting hole, the gear is located between the first rack and the second rack, and is meshed with the first rack and the second rack, and the lower end of the second rack is against the lower wind-resistant cable.

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