Inhaul cable fixing mechanism and bridge steel box arch rib comprising same

Abstract

The invention relates to the technical field of inhaul cable reinforcement, in particular to an inhaul cable fixing mechanism and a bridge steel box arch rib comprising the same, comprising a steel box body and inhaul cable connecting frames mounted at two ends of the steel box body; the reinforcing assembly is used for preventing the inhaul cable connecting frame from swinging and comprises a transmission part installed on the side wall of the steel box body in a sliding mode, a reinforcing part is arranged in the steel box body in a sliding mode, when the inhaul cable connecting frame rotates, the transmission part is squeezed, the transmission part squeezes the reinforcing part to squeeze the end of the inhaul cable connecting frame, and the reinforcing assembly further comprises a reinforcing lantern ring arranged on the inhaul cable connecting frame in a sleeving mode. And when the reinforcing piece is extruded, the reinforcing piece and the reinforcing lantern ring are far away from each other. The reinforcing assembly is arranged at the mounting position of the inhaul cable, opposite acting force is applied to the inhaul cable according to different shaking angles of the inhaul cable, the corresponding reinforcing steel rope can be tightened in the process of applying the opposite acting force to further exert the vibration buffering effect, meanwhile, the position of the reinforcing steel rope is lifted, and the pulling effect is improved.

Description

Technical Field

[0001] This invention relates to the field of cable reinforcement technology, specifically to a cable fixing mechanism and a steel box arch rib for bridges containing the mechanism. Background Technology

[0002] Cable-stayed bridges are composite bridge structures composed of three basic components: towers, beams, and cables. They are widely used worldwide. With the gradual application of new materials and technologies, their spans have now entered the range of extra-large spans (L≥1200m) previously only applicable to suspension bridges. As the spans of cable-stayed bridges increase, the length of the stay cables also increases. As a key component of cable-stayed bridges, the stay cables, due to their high flexibility and low damping, are highly susceptible to wind and rain vibrations under moderate wind speeds or with rainfall. These vibrations not only generate alternating stresses in the cables, causing fatigue damage, but also lead to fatigue failure of the steel sheaths at the cable roots, shortening the cable's lifespan. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the prior art, the present invention provides a cable fixing mechanism and a steel box arch rib for bridges containing the mechanism, which can effectively solve the problem that the vibration of the cable-stayed bridge will affect the stability of the bridge body in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a cable fixing mechanism and a steel box girder arch rib for bridges containing the mechanism, comprising a steel box body and further comprising: Cable connection frames are installed at both ends of the steel box body; A reinforcement component for preventing the cable connection frame from swinging includes a transmission component slidably mounted on the side wall of a steel box body. A reinforcing member is slidably mounted within the steel box body. When the cable connection frame rotates, it compresses the transmission component, which in turn compresses the reinforcing member and the end of the cable connection frame. The reinforcement component also includes a reinforcing collar sleeved on the cable connection frame. A reinforcing steel rope connects the reinforcing collar and the reinforcing member. When the reinforcing member is compressed, the reinforcing member and the reinforcing collar move away from each other.

[0005] Furthermore, the steel box body includes two mounting brackets, two inner connecting plates are provided between the two mounting brackets, and an outer connecting plate is fixedly installed on the outer side wall of the two mounting brackets. The cable connecting bracket is inserted through the mounting bracket.

[0006] Furthermore, the transmission component includes a first transmission ring and a second transmission ring slidably mounted on the mounting frame, and the first transmission ring and the second transmission ring are respectively located on the upper and lower sides of the cable connection frame, and both the first transmission ring and the second transmission ring are arc-shaped.

[0007] Furthermore, the reinforcement includes two first right-angle brackets installed at both ends of the first transmission ring. The first transmission bracket is slidably installed on the inner side wall of the mounting bracket. When the upper end of the cable connecting bracket deflects downward, the first transmission ring is squeezed and moved downward, and the first transmission bracket is squeezed and moved downward by the first transmission ring. The first transmission bracket presses downward against the lower end of the cable connecting bracket.

[0008] Furthermore, the reinforcement also includes a second right-angle frame fixedly connected to both ends of the second transmission ring. The second right-angle frame movably passes through the first right-angle frame. The second right-angle frame is elastically mounted with a second sliding frame. When the upper end of the cable connecting frame deflects upward, the second transmission ring is squeezed upward, the second sliding frame is squeezed upward by the second transmission ring, and the second sliding frame presses upward against the lower end of the cable connecting frame.

[0009] Furthermore, a first wedge block is fixedly installed on the inner side wall of the mounting frame, and a first sliding frame is slidably installed on the first wedge block. The first sliding frame is in the shape of a right-angle plate, and the first sliding frame and the first transmission frame are slidably connected. When the first transmission frame presses down on the lower end of the cable connecting frame, the first sliding frame slides along the first wedge block and gradually moves away from the mounting frame.

[0010] Furthermore, a second wedge block is fixedly installed on the inner sidewall of the mounting bracket, and the second sliding bracket and the second wedge block are slidably connected.

[0011] Furthermore, an elastic rod connects the second sliding frame and the second right-angle frame.

[0012] Furthermore, connecting ears are installed above and below the reinforcing collar, and the reinforcing steel rope includes a first reinforcing steel rope connected between the connecting ear located above the reinforcing collar and the first sliding frame.

[0013] Furthermore, the reinforcing steel rope also includes a second reinforcing steel rope connected between the connecting lug located below the reinforcing collar and the second sliding frame.

[0014] Furthermore, the cable connecting frame is provided with a reinforcing groove, and a reinforcing airbag is provided in the reinforcing groove. The bottom end of the reinforcing connecting frame is provided with two auxiliary airbags. When the first transmission frame presses down on the lower end of the cable connecting frame or the second sliding frame presses up on the lower end of the cable connecting frame, the auxiliary airbags will be squeezed. The two auxiliary airbags are respectively connected to the reinforcing airbags.

[0015] A steel box arch rib for bridges employs the aforementioned cable fixing mechanism.

[0016] The technical solution provided by this invention has the following advantages compared with the known prior art: Reinforcing components are installed at the cable installation location. They apply opposite forces to the cable according to different angles of swaying, achieving a buffering and stabilizing effect. During the application of the reverse force, the corresponding reinforcing steel rope is also tightened to further buffer the vibration. At the same time, the position of the reinforcing steel rope is raised to improve the tensile effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0018] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 for Figure 2 The front view; Figure 4 This is a structural diagram of the reinforcement component. Figure 5 This is a diagram showing the motion state of each component of the reinforcement assembly when the cable deflects.

[0019] The labels in the diagram represent: 1. Steel box body; 101. Mounting frame; 102. Inner connecting plate; 103. Outer connecting plate; 2. Cable connecting frame; 3. First transmission ring; 4. First right-angle frame; 5. First transmission frame; 6. First sliding frame; 7. First wedge block; 8. Second transmission ring; 9. Second right-angle frame; 10. Second sliding frame; 11. Second wedge block; 12. Reinforcing collar; 13. First reinforcing steel rope; 14. Second reinforcing steel rope; 15. Reinforcing airbag. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to embodiments.

[0022] Example 1: refer to Figure 1A cable fixing mechanism includes a steel box body 1 and a cable connecting frame 2 installed at both ends of the steel box body 1. The steel box body 1 includes two mounting brackets 101, with two inner connecting plates 102 between the two mounting brackets 101. An outer connecting plate 103 is fixedly installed on the outer side wall of the two mounting brackets 101. The cable connecting frame 2 is inserted through the mounting bracket 101. A protective shell (not shown in the figure) is provided on the outside of the steel box body 1 to protect the reinforcement components described later. The protective shell has a flexible interface larger than the size of the cable connecting frame 2, and the space between the flexible interface and the cable connecting frame 2 is filled with a sealing soft material.

[0023] refer to Figure 2 as well as Figure 4 To improve the stability of the cable during use, a reinforcing component is provided to prevent the cable connecting frame 2 from swinging. This component includes a transmission element slidably mounted on the side wall of the steel box body 1. The transmission element includes a first transmission ring 3 and a second transmission ring 8 slidably mounted on the mounting frame 101. The first transmission ring 3 and the second transmission ring 8 are located on the upper and lower sides of the cable connecting frame 2, respectively. Both the first transmission ring 3 and the second transmission ring 8 are arc-shaped. The sliding plate in the steel box body 1 has a reinforcing member. When the cable connecting frame 2 rotates, it will squeeze the transmission element. The transmission element squeezes the reinforcing member and squeezes the end of the cable connecting frame 2. The reinforcing member includes two first right-angle brackets 4 installed at both ends of the first transmission ring 3. A first transmission bracket 5 is slidably mounted on the inner side wall of the mounting frame 101. Figure 5 As shown in the right half of the diagram, when the upper end of the cable connecting frame 2 deflects downward, the first transmission ring 3 is squeezed and moved downward, and the first transmission frame 5 is squeezed and moved downward by the first transmission ring 3. The first transmission frame 5 presses downward against the lower end of the cable connecting frame 2. The reinforcement also includes a second right-angle frame 9 fixedly connected to both ends of the second transmission ring 8. The second right-angle frame 9 movably passes through the first right-angle frame 4. The second right-angle frame 9 is elastically mounted with a second sliding frame 10. An elastic rod connects the second sliding frame 10 and the second right-angle frame 9. Figure 5 As shown in the left half of the diagram, when the upper end of the cable connecting frame 2 deflects upward, the second transmission ring 8 is squeezed upward, and the second sliding frame 10 is squeezed upward by the second transmission ring 8. The second sliding frame 10 then presses upward against the lower end of the cable connecting frame 2. It is worth noting that a through groove is provided on the first right-angle frame 4 for the second right-angle frame 9 to slide, thus ensuring that the two right-angle frames do not interfere with each other.

[0024] Example 2: refer to Figure 2 and Figure 3To further improve the stability of the cable, in addition to the above-mentioned reinforcement, the reinforcement component also includes a reinforcement collar 12 sleeved on the cable connecting frame 2. A reinforcement steel rope is connected between the reinforcement collar 12 and the reinforcement member. Connecting ears are installed above and below the reinforcement collar 12. The reinforcement steel rope includes a first reinforcement steel rope 13 connected between the connecting ear above the reinforcement collar 12 and the first sliding frame 6. The reinforcement steel rope also includes a second reinforcement steel rope 14 connected between the connecting ear below the reinforcement collar 12 and the second sliding frame 10. When the reinforcement member is compressed, the reinforcement member and the reinforcement collar 12 move away from each other. A first wedge block 7 is fixedly installed on the inner side wall of the mounting frame 101. A first sliding frame 6 is slidably installed on the first wedge block 7. The first sliding frame 6 is in the shape of a right-angle plate and is slidably connected to the first transmission frame 5. When the first transmission frame 5 presses down on the lower end of the cable connecting frame 2, the first sliding frame 6 slides along the first wedge block 7 and gradually moves away from the mounting frame 101 (e.g., Figure 5 (As shown in the right half of the figure), a second wedge block 11 is fixedly installed on the inner wall of the mounting frame 101, and the second sliding frame 10 and the second wedge block 11 are slidably connected. When the second right-angle frame 9 presses upward against the lower end of the cable connecting frame 2, the second sliding frame 10 slides along the second wedge block 11 and gradually moves away from the mounting frame 101 (as shown in the right half of the figure). Figure 5 (As shown in the left half of the image).

[0025] Meanwhile, a reinforcing groove is provided on the cable connecting frame 2, and a reinforcing airbag 15 is provided in the reinforcing groove. Two auxiliary airbags are provided at the bottom of the reinforcing connecting frame 2. When the first transmission frame 5 presses down on the lower end of the cable connecting frame 2, the first reinforcing steel rope 13 is tightened, and the first reinforcing steel rope 13 will prevent the cable connecting frame 2 from deflecting upward. When the second sliding frame 10 presses up on the lower end of the cable connecting frame 2, the second reinforcing steel rope 14 is tightened, and the second reinforcing steel rope 14 will prevent the cable connecting frame 2 from deflecting downward. Regardless of the direction of the first transmission frame 5, the cable connecting frame 2 is not affected. When the lower end of the lower compression cable connecting frame 2 or the second sliding frame 10 compresses the lower end of the cable connecting frame 2 upwards, the auxiliary airbag will be compressed (the auxiliary airbag and the reinforcing airbag 15 can be replaced with pistons, which will increase the cost but make them more stable and durable). The two auxiliary airbags are connected to the reinforcing airbag 15 respectively. The gas in the auxiliary airbag is squeezed into the reinforcing airbag 15, the reinforcing airbag 15 expands, and pushes the reinforcing collar 12 to slide upwards along the cable connecting frame 2. This not only increases the pulling height but also further tightens the reinforcing steel cable.

[0026] A steel box arch rib for bridges adopts the above-mentioned cable fixing mechanism.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stay fixing mechanism comprising a steel box body (1), characterized in that, Also include: The cable connecting frame (2) is installed at both ends of the steel box body (1); The reinforcing assembly is used for preventing the cable connecting frame (2) from swinging, comprising a transmission member slidingly installed on the side wall of the steel box body (1), a reinforcing member in the steel box body (1) slidingly installed, when the cable connecting frame (2) rotates, the reinforcing member will extrude the transmission member, the transmission member extrudes the reinforcing member extrudes the end of the cable connecting frame (2), the reinforcing assembly further comprises a reinforcing sleeve ring (12) sleeved on the cable connecting frame (2), the reinforcing sleeve ring (12) and the reinforcing member are connected with the reinforcing steel rope, when the reinforcing member is extruded, the reinforcing member and the reinforcing sleeve ring (12) are away from each other.

2. A cable fixing mechanism according to claim 1, wherein The steel box body (1) comprises two mounting frames (101), two inner connecting plates (102) are arranged between the two mounting frames (101), and an outer connecting plate (103) is fixedly installed on the outer side wall of the two mounting frames (101). The cable connecting frame (2) is inserted through the mounting frame (101).

3. A cable fixing mechanism according to claim 2, wherein The transmission member comprises a first transmission ring (3) and a second transmission ring (8) slidingly installed on the mounting frame (101), and the first transmission ring (3) and the second transmission ring (8) are located on the upper and lower sides of the cable connecting frame (2) respectively, and the first transmission ring (3) and the second transmission ring (8) are in arc shape.

4. A cable fixing mechanism according to claim 3, wherein The reinforcing member comprises two first right angle frames (4) installed at both ends of the first transmission ring (3), a first transmission frame (5) is slidingly installed on the inner side wall of the mounting frame (101), when the upper end of the cable connecting frame (2) deflects downward, the first transmission ring (3) is extruded and moves downward, the first transmission frame (5) is extruded and moves downward by the first transmission ring (3), and the first transmission frame (5) extrudes the lower end of the cable connecting frame (2) downward.

5. A cable fixing mechanism according to claim 4, wherein The reinforcing member further comprises a second right angle frame (9) fixedly connected with both ends of the second transmission ring (8), the second right angle frame (9) is movably inserted through the first right angle frame (4), and the second right angle frame (9) is elastically installed with a second sliding frame (10). When the upper end of the cable connecting frame (2) deflects upward, the second transmission ring (8) is extruded and moves upward, the second sliding frame (10) is extruded and moves upward by the second transmission ring (8), and the second sliding frame (10) extrudes the lower end of the cable connecting frame (2) upward.

6. A cable fixing mechanism according to claim 5, wherein A first wedge block (7) is fixedly installed on the inner side wall of the mounting frame (101), a first sliding frame (6) is slidingly installed on the first wedge block (7), the first sliding frame (6) is in right angle plate shape, and the first sliding frame (6) and the first transmission frame (5) are slidingly connected. When the first transmission frame (5) extrudes the lower end of the cable connecting frame (2) downward, the first sliding frame (6) slides away from the mounting frame (101) along the first wedge block (7).

7. A cable fixing mechanism according to claim 6, wherein A second wedge block (11) is fixedly installed on the inner side wall of the mounting frame (101), and the second sliding frame (10) and the second wedge block (11) are slidingly connected.

8. A cable fixing mechanism according to claim 7, wherein The second sliding frame (10) and the second right angle frame (9) are connected with an elastic rod.

9. A cable fixing mechanism according to claim 8, wherein The reinforcing sleeve (12) is provided with connecting ears above and below, and the reinforcing steel rope comprises a first reinforcing steel rope (13) connected between the connecting ear above the reinforcing sleeve (12) and the first sliding frame (6).

10. A cable fixing mechanism according to claim 9, wherein The reinforcing steel rope further comprises a second reinforcing steel rope (14) connected between the connecting ear below the reinforcing sleeve (12) and the second sliding frame (10).

11. A cable fixing mechanism according to claim 10, wherein The cable connecting frame (2) is provided with a reinforcing groove, and the reinforcing groove is provided with a reinforcing air bag (15); the bottom end of the reinforcing connecting frame (2) is provided with two auxiliary air bags; the first transmission frame (5) downwardly extruding the lower end of the cable connecting frame (2) or the second sliding frame (10) upwardly extruding the lower end of the cable connecting frame (2) will extrude the auxiliary air bags; the two auxiliary air bags are respectively connected with the reinforcing air bag (15).

12. A steel box arch rib for a bridge, which adopts the cable fixing mechanism of claim 11.

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