Cable-stayed bridge cable force adjusting device

Abstract

The utility model relates to cable-stayed bridge cable force adjusting technical field, and disclose a kind of cable-stayed bridge cable force adjusting device, including installation frame, the left side of installation frame is equipped with the through-hole extending to the through-hole in installation frame frame, and threaded lead screw is placed in through-hole. By utilizing the matching special key and the rotating plate and the multiple rotating rods that the outer ring is evenly welded are welded at the one end of special key, operator need not complex tool, just need to use special key insertion special lock hole, hold rotating rod can easily rotate transmission shaft, greatly simplify the operation procedure of cable force adjustment, reduce the operation difficulty, improve work efficiency, power is transmitted by the meshing of bevel gear and spur gear, accurately transmitted to first gear, and then drive threaded lead screw to move, realize the adjustment of cable tension, so that cable-stayed bridge can maintain stable stress state under different working conditions, effectively improve the safety and stability of cable-stayed bridge.

Description

Technical Field

[0001] This utility model relates to the field of cable-stayed bridge cable force adjustment technology, specifically a cable-stayed bridge cable force adjustment device. Background Technology

[0002] In the field of cable-stayed bridge engineering, cable tension adjustment is one of the core elements to ensure the safety and stable operation of bridge structures. Cable-stayed bridges rely on numerous stay cables to transfer the bridge deck load to the bridge towers. The magnitude and distribution of cable tension directly affect the overall stress state and deformation of the bridge. However, existing cable tension adjustment devices for cable-stayed bridges have many shortcomings in terms of structural design and ease of operation. For example, some devices have complex structures, leading to cumbersome installation and maintenance processes, increasing engineering costs and time. Some devices are not convenient to operate in adjusting the cable tension of cable-stayed bridges, making it difficult for operators to complete the cable tension adjustment work efficiently and safely in complex environments. These problems seriously restrict the quality and efficiency of cable tension adjustment work for cable-stayed bridges, thereby affecting the overall performance and service life of the bridge. Utility Model Content

[0003] In view of the shortcomings of the prior art, this utility model provides a cable-stayed bridge cable force adjustment device to solve the problems mentioned in the background art.

[0004] This utility model provides the following technical solution: a cable-stayed bridge cable force adjustment device, including a mounting frame, a through hole extending into the mounting frame on the left side of the mounting frame, and a threaded screw placed in the through hole. A first gear is set on the outer ring of the threaded screw inside the mounting frame. An adjustment box is welded to one side of the mounting frame. A protective box is fixedly installed on the inner wall of the right side of the adjustment box. A rotating shaft is rotatably connected to the inner wall of the left side of the adjustment box, penetrating and extending into the protective box. A second gear is installed on the outer ring of the rotating shaft inside the adjustment box. A first bevel gear is installed at one end of the rotating shaft inside the protective box. A transmission shaft is rotatably connected to the inside of the protective box, penetrating and extending to the outside of the adjustment box. A second bevel gear is installed at one end of the transmission shaft inside the protective box.

[0005] As a preferred embodiment of this utility model, a cable is installed at one end of the threaded screw located outside the mounting frame, and the inner diameter of the through hole extending into the mounting frame on the left side of the mounting frame is larger than the outer diameter of the threaded screw.

[0006] As a preferred embodiment of this utility model, the center of the first gear is provided with a threaded hole that matches the threaded screw, and the first gear and the second gear mesh with each other.

[0007] As a preferred embodiment of this utility model, the first bevel gear installed at one end of the rotating shaft inside the protective box and the second bevel gear installed at one end of the transmission shaft inside the protective box mesh with each other.

[0008] As a preferred technical solution of this utility model, the transmission shaft has an irregularly shaped lock hole at one end located outside the adjustment box, and an irregularly shaped key matching it is provided in the irregularly shaped lock hole, and a rotating plate is welded to one end of the irregularly shaped key.

[0009] As a preferred embodiment of this utility model, the outer ring of the rotating plate is uniformly welded with a plurality of rotating rods, and the right side of the mounting frame is provided with a mounting hole.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. This cable-stayed bridge cable tension adjustment device, through the installation frame and its left-side through hole, allows the threaded screw to be smoothly placed. The inner diameter of the through hole is larger than the outer diameter of the threaded screw, providing ample space for the movement of the threaded screw and facilitating adjustment. The drive shaft has a special-shaped lock hole at one end outside the adjustment box, which is matched with a special-shaped key. A rotating plate welded to one end of the special-shaped key and multiple rotating rods evenly welded to the outer ring are also included. Operators do not need complicated tools; they only need to insert the special-shaped key into the special-shaped lock hole and hold the rotating rods to easily rotate the drive shaft. This greatly simplifies the cable tension adjustment process, reduces the difficulty of operation, and improves work efficiency.

[0012] 2. This cable-stayed bridge cable tension adjustment device features a first gear with a threaded hole at its center that matches the threaded screw, meshing with a second gear. The second gear on the rotating shaft meshes with a second bevel gear on the transmission shaft. The first bevel gear at one end of the rotating shaft also engages with the second bevel gear, forming a stable and precise transmission system. When the operator rotates the transmission shaft, power is precisely transmitted to the first gear through the meshing of the bevel gear and spur gear, thereby driving the threaded screw to move and adjusting the cable tension. This ensures that the cable-stayed bridge maintains a stable stress state under different working conditions, effectively improving the safety and stability of the cable-stayed bridge. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a cross-sectional view of the regulating box and protective box of this utility model;

[0015] Figure 3 This is a schematic diagram of the regulating box structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the transmission shaft structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the back structure of the rotating plate of this utility model.

[0018] In the diagram: 1. Mounting frame; 2. Mounting hole; 3. Rotating plate; 4. Threaded screw; 5. Cable; 6. Adjustment box; 7. Rotating rod; 8. First gear; 9. First bevel gear; 10. Second bevel gear; 11. Protective box; 12. Rotating shaft; 13. Second gear; 14. Drive shaft; 15. Irregular key. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1: Please refer to Figures 1-5 A cable-stayed bridge cable tension adjustment device includes main components such as a mounting frame 1, a threaded screw 4, and an adjustment box 6. The mounting frame 1 serves as the basic support structure of the entire device. A through hole is opened on its left side, with the inner diameter of the through hole slightly larger than the outer diameter of the threaded screw 4. The threaded screw 4 is placed in the through hole, and a cable 5 is installed at the end of the threaded screw 4 located outside the mounting frame 1 for connecting the cable-stayed bridge's stay cables. Inside the mounting frame 1, a first gear 8 is provided on the outer ring of the threaded screw 4. A threaded hole matching the threaded screw 4 is opened in the center of the first gear 8, so that the first gear 8 can cooperate with the threaded screw 4. When the first gear 8 rotates, it can cause the threaded screw 4 to move and pull the cable 5.

[0021] An adjustment box 6 is welded to one side of the mounting frame 1. A protective box 11 is fixedly installed on the inner right side of the adjustment box 6. A rotating shaft 12 is rotatably connected to the inner left side of the adjustment box 6. The rotating shaft 12 passes through and extends into the interior of the protective box 11. A second gear 13 is installed on the outer ring of the rotating shaft 12 inside the adjustment box 6. The second gear 13 meshes with the first gear 8. A first bevel gear 9 is installed at one end of the rotating shaft 12 inside the protective box 11. A transmission shaft 14 is rotatably connected inside the protective box 11. The transmission shaft 14 passes through and extends to the outside of the adjustment box 6. A second bevel gear 10 is installed at one end of the transmission shaft 14 inside the protective box 11. The second bevel gear 10 meshes with the first bevel gear 9.

[0022] The drive shaft 14 has a shaped lock hole at one end outside the adjustment box 6, and is equipped with a matching shaped key 15. A rotating plate 3 is welded to one end of the shaped key 15, and multiple rotating rods 7 are evenly welded to the outer ring of the rotating plate 3. An installation hole 2 is opened on the right side of the mounting frame 1 for installing the entire device to the designated position of the cable-stayed bridge.

[0023] When the cable tension needs to be adjusted, the operator inserts the special-shaped key 15 into the special-shaped lock hole of the drive shaft 14. By rotating the rotating plate 3 and the rotating rod 7, the drive shaft 14 is driven to rotate. When the drive shaft 14 rotates, the second bevel gear 10 rotates accordingly. Since the second bevel gear 10 meshes with the first bevel gear 9, it can drive the second gear 13 to start rotating through the rotating shaft 12. Since the second gear 13 meshes with the first gear 8, the first gear 8 starts to rotate, which in turn drives the threaded screw 4 to move in the through hole of the mounting frame 1, thereby adjusting the tension of the cable 5 and realizing the adjustment of the cable tension.

[0024] Example 2: Please refer to Figures 1-5 The cable tension adjustment device of this embodiment is basically the same as that of the first embodiment, and also includes main components such as mounting frame 1, threaded screw 4, and adjustment box 6. During the installation process, the mounting frame 1 is firmly installed on the bridge tower or bridge deck of the cable-stayed bridge through the mounting hole 2 on the right side, so that the installation of the device is stable.

[0025] When the cable-stayed bridge needs to fine-tune the cable tension under different working conditions, such as vehicle loads and wind loads, the operator uses the special-shaped key 15 to insert into the special-shaped lock hole of the drive shaft 14. Since there are multiple rotating rods 7 welded on the outer ring of the rotating plate 3, the operator can easily hold the rotating rods 7 to apply torque, drive the rotating plate 3 and the special-shaped key 15 to rotate, and thus make the drive shaft 14 rotate.

[0026] When the drive shaft 14 rotates, the second bevel gear 10 on it meshes with the first bevel gear 9 on the rotating shaft 12, driving the rotating shaft 12 to rotate. The rotation of the rotating shaft 12 causes the second gear 13 on it to mesh with the first gear 8, driving the first gear 8 to rotate. The threaded hole in the center of the first gear 8 cooperates with the threaded screw 4, causing the threaded screw 4 to move linearly within the through hole of the mounting frame 1, thereby precisely adjusting the tension of the cable 5 to meet the cable force requirements of the cable-stayed bridge under different working conditions.

[0027] Example 3: Please refer to Figures 1-5 In this embodiment, the connection method of each component of the cable-stayed bridge cable force adjustment device is the same as that in the previous embodiment. In practical applications, considering that the device is exposed to the outdoor environment for a long time, in order to prevent dust, rainwater and other substances from entering the adjustment box 6 and the protective box 11 and affecting the normal operation of the transmission components, sealing devices such as rubber sealing rings and sealing bearings can be set at the openings of the adjustment box 6 and the protective box 11.

[0028] When it is necessary to adjust the cable tension of the cable-stayed bridge, the operator inserts the special-shaped key 15 into the special-shaped lock hole of the drive shaft 14 according to the conventional method. By rotating the rotating plate 3 and the rotating rod 7, the drive shaft 14 starts to rotate, driving the second bevel gear 10 to rotate. The second bevel gear 10 meshes with the first bevel gear 9, causing the rotating shaft 12 to rotate, which in turn drives the second gear 13 to rotate, and further drives the first gear 8 to rotate. Due to the threaded engagement between the first gear 8 and the threaded screw 4, the threaded screw 4 moves within the through hole of the mounting frame 1, thereby adjusting the tension of the cable 5.

[0029] In addition, to facilitate operators in accurately grasping the degree of cable tension adjustment, scale markings can be set on the mounting frame 1 or the adjustment box 6. By observing the correspondence between the movement position of the threaded screw 4 and the scale markings, the cable tension adjustment status can be understood. At the same time, indicator arrows can also be set on the rotating plate 3 to facilitate operators in determining the rotation direction and angle, thereby improving the accuracy and efficiency of cable tension adjustment.

[0030] Implementation effect: By setting the mounting frame 1 and its left through hole, the threaded screw 4 can be smoothly placed in it, and the inner diameter of the through hole is larger than the outer diameter of the threaded screw 4, providing sufficient space for the movement of the threaded screw 4 and facilitating adjustment. The drive shaft 14 has a special-shaped lock hole at one end outside the adjustment box 6, which is matched with a special-shaped key 15 and a rotating plate 3 welded to one end of the special-shaped key 15 and multiple rotating rods 7 evenly welded to the outer ring. The operator does not need complicated tools. He only needs to insert the special-shaped key 15 into the special-shaped lock hole and hold the rotating rods 7 to easily rotate the drive shaft 14. This greatly simplifies the operation process of cable force adjustment, reduces the difficulty of operation, and improves work efficiency.

[0031] The first gear 8 has a threaded hole at its center that matches the threaded screw 4 and meshes with the second gear 13. The second gear 13 on the rotating shaft 12 meshes with the second bevel gear 10 on the transmission shaft 14. The first bevel gear 9 at one end of the rotating shaft 12 also meshes with the second bevel gear 10, forming a stable and precise transmission system. When the operator rotates the transmission shaft 14, the power is precisely transmitted to the first gear 8 through the meshing of the bevel gear and the spur gear, which in turn drives the threaded screw 4 to move, thereby adjusting the tension of the cable 5. This ensures that the cable-stayed bridge can maintain a stable stress state under different working conditions, effectively improving the safety and stability of the cable-stayed bridge.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable-stayed bridge cable tension adjustment device, comprising a mounting frame (1), characterized in that: A through hole extending into the frame of the mounting frame (1) is provided on the left side, and a threaded screw (4) is placed in the through hole. The outer ring of the threaded screw (4) inside the mounting frame (1) is provided with a first gear (8). An adjustment box (6) is welded to one side of the mounting frame (1). A protective box (11) is fixedly installed on the inner wall of the right side of the adjustment box (6). A rotating shaft (12) that penetrates and extends into the protective box (11) is rotatably connected to the inner wall of the left side of the adjustment box (6). A second gear (13) is installed on the outer ring of the rotating shaft (12) inside the adjustment box (6). A first bevel gear (9) is installed at one end of the rotating shaft (12) inside the protective box (11). A transmission shaft (14) that penetrates and extends into the outside of the adjustment box (6) is rotatably connected to the inside of the protective box (11). A second bevel gear (10) is installed at one end of the transmission shaft (14) inside the protective box (11).

2. The cable tension adjustment device for a cable-stayed bridge according to claim 1, characterized in that: The threaded screw (4) is equipped with a cable (5) at one end outside the mounting frame (1). The inner diameter of the through hole extending into the mounting frame (1) on the left side of the mounting frame (1) is larger than the outer diameter of the threaded screw (4).

3. The cable tension adjustment device for a cable-stayed bridge according to claim 1, characterized in that: The first gear (8) has a threaded hole at its center that matches the threaded screw (4), and the first gear (8) and the second gear (13) mesh with each other.

4. The cable tension adjustment device for a cable-stayed bridge according to claim 1, characterized in that: The first bevel gear (9) installed at one end of the rotating shaft (12) inside the protective box (11) meshes with the second bevel gear (10) installed at one end of the transmission shaft (14) inside the protective box (11).

5. The cable tension adjustment device for a cable-stayed bridge according to claim 1, characterized in that: The drive shaft (14) has an irregularly shaped lock hole at one end outside the regulating box (6), and an irregularly shaped key (15) matching it is provided in the irregularly shaped lock hole. A rotating plate (3) is welded to one end of the irregularly shaped key (15).

6. The cable tension adjustment device for a cable-stayed bridge according to claim 5, characterized in that: The outer ring of the rotating plate (3) is uniformly welded with multiple rotating rods (7), and the right side of the mounting frame (1) is provided with mounting holes (2).

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