Arch bridge suspender tensioning device

Abstract

The utility model discloses an arch bridge suspender tensioning device, which belongs to the field of tensioning devices, and comprises a base, a suspender body and a connecting mechanism, after a mounting column is inserted into a mounting hole, a screw knob is rotated to enable a limiting pin to move downwards to penetrate through a through hole to be inserted into a limiting hole, and the suspender body is connected with the base. When the suspender body is tensioned, the tensioning jack is started to drive the output end to downwards push the pushing seat, so that the pushing seat applies downward tensioning force to the suspender body by pushing the connecting column when the pushing seat is guided to move along the threaded rod through the connecting guide hole, and then the suspender body is tensioned. The deeper the threaded column enters the threaded connecting cylinder, the larger the tensioning force applied to the suspender body is, and meanwhile, a driving motor is started to drive the output end to drive a first gear to rotate under the meshing effect through rotation of a second gear; and the threaded connecting cylinder is driven by the rotating rod to rotate and is in threaded connection with the threaded column.

Description

Technical Field

[0001] This utility model relates to the field of tensioning devices, and in particular to a tensioning device for arch bridge hangers. Background Technology

[0002] The bridge deck load is first transferred to the suspenders through the beams, then to the arch ribs, and finally to the piers. Because different suspender loading sequences can lead to uneven stress distribution, without timely adjustments and real-time monitoring at each construction stage, localized increases in suspender force and excessive elastic deformation can cause cracks in the beams, directly affecting the arch rib alignment and the bridge's usability. Therefore, a tensioning device is needed to adjust the tension of the arch bridge suspenders.

[0003] In the prior art, a Chinese utility model patent with publication number "CN106120571B" and patent name "Tensioning Device for Arch Bridge Suspension Rod" discloses a tensioning device. The patent describes technical solutions such as "a bracket, a jack and a limiting mechanism, the bracket is sleeved on the suspension rod and its bottom end abuts against the suspension rod base, and the jack is placed between the limiting mechanism and the bracket for tensioning the suspension rod".

[0004] However, in actual use, the tensioning device is difficult to fix together with the existing base on the arch bridge deck for connecting the hangers to achieve the tensioning operation of the hangers. A lot of time is required to fix the tensioning device before tensioning the hangers. At the same time, during the tensioning and adjustment of the hangers through the tensioning device, the fastening nuts need to be tightened manually, which brings inconvenience to the actual use and operation of the tensioning device, making it more troublesome to operate and thus reducing the efficiency of construction work.

[0005] Therefore, in order to solve the above technical problems, this utility model proposes an arch bridge suspension rod tensioning device. Utility Model Content

[0006] The main purpose of this invention is to provide a tensioning device for arch bridge hangers, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An arch bridge suspension rod tensioning device includes a base and a suspension rod body. A tensioning mechanism is provided between the base and the suspension rod body. The tensioning mechanism includes a pusher seat, a lower base, threaded rods, a tensioning jack, a threaded connecting cylinder, a first gear drive motor, and a second gear. The pusher seats are arranged in a symmetrical set and fixedly connected together. Symmetrical threaded rods are fixedly connected to the top surface of the lower base and pass through the pusher seats. The threaded rods pass through the tensioning jack and are fixedly connected to the tensioning jack. The output end of the tensioning jack is fixedly connected to the pusher seat. The threaded connecting cylinder is movably connected to the lower base via a rotating rod at its bottom end. The top surface of the lower base is fixedly connected to the bottom end of the rotating rod. The drive motor is fixedly connected to the top surface of the rear end fixed seat of the lower base, and the second gear is fixedly connected to the output end of the drive motor and meshes with the first gear. The tensioning mechanism is fixedly connected to the base through the bottom connecting mechanism, and the connecting mechanism includes a base plate, a mounting column, a screw knob, and a limiting pin. The base plate is fixedly connected to the bottom of the lower base through the concave seat at the top end, and the mounting column is fixedly connected to the front end of the base plate. The screw knob is movably connected to the fixing block at the front end of the base plate, and the limiting pin is fixedly connected to the bottom end of the screw knob.

[0009] Preferably, the jacking base is provided in a symmetrical set and fixed together by bolts and nuts. The opposing walls of the symmetrical jacking bases are respectively provided with through holes for the lifting rods. The top surface of the jacking base and the top surface of the lower base are respectively provided with connecting guide holes on the left and right sides. The upper and lower ends of the two threaded rods are respectively inserted into the connecting guide holes on the top surfaces of the jacking base and the lower base. The threaded rods are also fixedly connected to the lower base by bolts. The output end of the tensioning jack is fixedly installed on the top surface of the jacking base, and the threaded rod passes through the tensioning jack and is fixedly installed together with the tensioning jack.

[0010] Preferably, the boom body passes through the boom through hole, and a connecting column is fixedly installed at the bottom end of the boom body, and a threaded column is fixedly installed at the bottom end of the connecting column.

[0011] Preferably, a fixing hole is provided at the center of the top surface of the lower base, and a bearing is fixedly installed in the fixing hole. A fixing seat is fixedly installed on the rear end wall of the lower base, and the drive motor is fixedly installed on the top surface of the fixing seat. The second gear is fixedly installed on the output end of the drive motor. The threaded connecting cylinder is threadedly connected to the threaded column, and a rotating rod is fixedly installed at the bottom end of the threaded connecting cylinder. The rotating rod is inserted and fixedly installed together with the bearing, and a first gear is fixedly installed at the bottom end of the rotating rod and meshes with the second gear.

[0012] Preferably, the base has an installation hole on its front wall and a limit hole on its top surface.

[0013] Preferably, the concave seat is fixedly installed on the bottom surface of the lower base, and the base plate is fixedly installed on the bottom surface of the concave seat. The fixing block is fixedly installed on the front end wall of the base plate, and the top surface of the fixing block is provided with a threaded hole. The mounting post is fixedly installed on the front end wall of the base plate and located below the fixing block. The mounting post is inserted into the mounting hole. The outer wall of the mounting post is provided with a through hole. The screw knob is threadedly connected to the threaded hole, and the limiting pin is fixedly installed at the bottom end of the screw knob and passes through the through hole and is inserted into the limiting hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this invention, the connecting mechanism allows for quick connection and fixation of the tensioning mechanism to the base after the mounting post is inserted into the mounting hole, and the screw knob is rotated to move the limiting pin downwards through the through hole and into the limiting hole. When tensioning the boom body, the tensioning jack's drive output end is activated to push the push seat downwards. As the push seat moves along the threaded rod guide through the guide hole, it applies a downward tensioning force to the boom body by pushing the connecting post, causing the threaded post to enter the lower threaded connecting cylinder. The deeper the rod, the greater the tension applied to the rod body. Simultaneously, the drive motor output is activated, driving the second gear to rotate. The second gear, in turn, drives the first gear to rotate. The first gear, through the rotating rod, drives the threaded connecting cylinder to rotate, automatically threading the threaded column. This eliminates the need for manual operation after each tensioning operation, thus facilitating the rapid installation and use of the tensioning mechanism and enabling quick tensioning of the rod. The operation is simple and convenient, and the entire device can be easily disassembled and reassembled between different rods, thereby improving construction efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the base of this utility model;

[0018] Figure 3 This is a structural breakdown diagram of the tensioning mechanism of this utility model;

[0019] Figure 4 This is a structurally disassembled schematic diagram of the connecting mechanism of this utility model.

[0020] In the diagram: 1. Base; 2. Suspension rod body; 3. Tensioning mechanism; 4. Connecting mechanism; 5. Mounting hole; 6. Limiting hole; 7. Connecting column; 8. Threaded column; 9. Pushing seat; 10. Suspension rod through hole; 11. Connecting guide hole; 12. Lower base; 13. Threaded rod; 14. Tensioning jack; 15. Fixing hole; 16. Bearing; 17. Fixing seat; 18. Threaded connecting cylinder; 19. Rotating rod; 20. First gear; 21. Drive motor; 22. Second gear; 23. Concave seat; 24. Base plate; 25. Fixing block; 26. Threaded hole; 27. Mounting column; 28. Through hole; 29. ​​Screw knob; 30. Limiting pin. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1 - Figure 4 As shown, an arch bridge suspension rod tensioning device includes a base 1 and a suspension rod body 2. A tensioning mechanism 3 is provided between the base 1 and the suspension rod body 2. The tensioning mechanism 3 includes a pusher seat 9, a lower base 12, a threaded rod 13, a tensioning jack 14, a threaded connecting cylinder 18, a first gear 20, a drive motor 21, and a second gear 22. The pusher seat 9 has a symmetrical set of components fixedly connected together. A symmetrical threaded rod 13 is fixedly connected to the top surface of the lower base 12 and passes through the pusher seat 9. The threaded rod 13 passes through the tensioning jack 14 and is fixedly connected to the tensioning jack 14. The output end of the tensioning jack 14 is fixedly connected to the pusher seat 9. The threaded connecting cylinder 18 is movably connected to the lower base 12 via a rotating rod 19 at its bottom end. The top surface of the base 1 is connected to the base 1, and the first gear 20 is fixedly connected to the bottom end of the rotating rod 19. The drive motor 21 is fixedly connected to the top surface of the rear end fixed seat 17 of the lower base 12, and the second gear 22 is fixedly connected to the output end of the drive motor 21 and meshes with the first gear 20. The tensioning mechanism 3 is fixedly connected to the base 1 through the bottom connecting mechanism 4. The connecting mechanism 4 includes a base plate 24, a mounting column 27, a screw knob 29 and a limit pin 30. The base plate 24 is fixedly connected to the bottom of the lower base 12 through the concave seat 23 at the top end, and the mounting column 27 is fixedly connected to the front end of the base plate 24. The screw knob 29 is movably connected to the fixing block 25 at the front end of the base plate 24, and the limit pin 30 is fixedly connected to the bottom end of the screw knob 29.

[0023] like Figure 3As shown, the push base 9 is provided with a symmetrical set of left and right sides and is fixed together by bolts and nuts. The opposite walls of the left and right symmetrical push base 9 are respectively provided with rod through holes 10. The top surface of the push base 9 and the top surface of the lower base 12 are respectively provided with connecting guide holes 11. The upper and lower ends of the two threaded rods 13 are respectively inserted into the connecting guide holes 11 on the top surfaces of the push base 9 and the lower base 12. The threaded rods 13 are also fixedly connected to the lower base 12 by bolts. The output end of the tension jack 14 is fixedly installed on the top surface of the push base 9, and the threaded rods 13 pass through the tension jack 14 and are fixedly installed together with the tension jack 14. When the tension jack 14 is turned on, the output end is driven to push the push base 9 downward, so that the push base 9 moves downward along the threaded rods 13 through the connecting guide holes 11. The tension force of the rod body 2 can be adjusted.

[0024] like Figure 3 As shown, the boom body 2 passes through the boom through hole 10, and a connecting column 7 is fixedly installed at the bottom end of the boom body 2. A threaded column 8 is fixedly installed at the bottom end of the connecting column 7. Since the boom body 2 passes through the boom through hole 10 and the connecting column 7 is located on the bottom surface of the push seat 9, when the push seat 9 moves downward, it will apply tension to the boom body 2 through the connecting column 7 to adjust the tension of the boom body 2, and make the threaded column 8 continuously enter the threaded connecting sleeve 18.

[0025] like Figure 3 As shown, a fixing hole 15 is provided at the center of the top surface of the lower base 12, and a bearing 16 is fixedly installed in the hole of the fixing hole 15. A fixing seat 17 is fixedly installed on the rear end wall of the lower base 12, and a drive motor 21 is fixedly installed on the top surface of the fixing seat 17. A second gear 22 is fixedly installed on the output end of the drive motor 21. A threaded connecting cylinder 18 is threadedly connected to a threaded column 8, and a rotating rod 19 is fixedly installed at the bottom end of the threaded connecting cylinder 18. The rotating rod 19 is inserted and fixedly installed together with the bearing 16, and a first gear 20 is fixedly installed at the bottom end of the rotating rod 19 and meshes with the second gear 22. When the threaded column 8 enters the threaded connecting cylinder 18, the drive motor 21 drives the output end to drive the second gear 22 to rotate. The second gear 22 drives the first gear 20 to rotate under the meshing action. The first gear 20 drives the threaded connecting cylinder 18 to rotate through the rotating rod 19, so that the threaded connecting cylinder 18 and the threaded column 8 are threadedly connected together, without the need for manual rotation of the threaded connecting cylinder 18 to the threaded column 8.

[0026] like Figure 2 As shown, a mounting hole 5 is provided on the front wall of the base 1. The mounting hole 5 is used to cooperate with the positioning insertion of the mounting post 27. A limiting hole 6 is provided on the top surface of the base 1. The limiting hole 6 is used to cooperate with the limiting pin 30 to limit the mounting post 27.

[0027] like Figure 4 As shown, the concave seat 23 is fixedly installed on the bottom surface of the lower base 12, and the base plate 24 is fixedly installed on the bottom surface of the concave seat 23. The fixing block 25 is fixedly installed on the front wall of the base plate 24, and the top surface of the fixing block 25 is provided with a threaded hole 26. The mounting column 27 is fixedly installed on the front wall of the base plate 24 and located below the fixing block 25. The mounting column 27 is inserted into the mounting hole 5. The outer wall of the mounting column 27 is provided with a through hole 28. The screw knob 29 is threadedly connected to the threaded hole 26, and the limiting pin 30 is fixedly installed at the bottom end of the screw knob 29 and passes through the through hole 28 and is inserted into the limiting hole 6. After the mounting column 27 is inserted into the mounting hole 5, the screw knob 29 in the threaded hole 26 is rotated. The screw knob 29 drives the limiting pin 30 to rotate and move downward, so that the limiting pin 30 passes through the through hole 28 and is inserted into the limiting hole 6, thereby connecting and fixing the tensioning mechanism 3 and the base 1 together.

[0028] It should be noted that this utility model is a tensioning device for an arch bridge hanger. When adjusting the tension of the hanger on the arch bridge, the mounting post 27 at the front end of the bottom plate 24 of the bottom concave seat 23 of the lower base 12 is inserted into the mounting hole 5 on the front wall of the base 1 for connecting the hanger body 2, which is installed on the bridge deck. The through hole 28 on the outer wall of the mounting post 27 is aligned with the limiting hole 6 on the top surface of the base 1. The screw knob 29, which is threaded in the threaded hole 26 on the top surface of the fixing block 25 at the front end of the base plate 24, is rotated. The screw knob 29 will rotate within the threaded hole 26, causing the limiting pin 30 installed at the bottom to rotate and move downward until the limiting pin 30 passes through the through hole 28 and is inserted into the limiting hole 6. When the screw knob 29 can no longer be turned, the tensioning mechanism 3 can be quickly installed onto the base 1. The threaded rod 13 is inserted into the connecting guide hole 11 on the top surface of the lower base 12, and then the threaded rod 13 is fixedly connected to the lower base 12 with bolts. Next, the symmetrical push seats 9 with tensioning jacks 14 are fitted onto the upper part of the threaded rod 13 through the connecting guide hole 11, ensuring that the lifting rod body 2 passes through the lifting rod through-hole 10 on the opposite wall of the symmetrical push seats 9. The upper part of the threaded rod 13 is then fixedly connected to the tensioning jack 14. The symmetrical push seats 9 are then connected and fixed together with bolts and nuts, so that the connecting column 7 installed at the bottom of the lifting rod body 2 is placed on the top surface of the symmetrical push seats 9. The tensioning force on the lifting rod body 2 is then applied. During adjustment, the drive output end of the tension jack 14 is turned on to push the push seat 9 downward, causing the push seat 9 to move downward along the threaded rod 13 through the guide hole 11. During the movement, the push seat 9 will apply a vertical downward tension force to the rod body 2 through the connecting column 7 installed at the bottom end of the rod body 2, and cause the threaded column 8 installed at the bottom end of the connecting column 7 to enter the threaded connecting cylinder 18 installed on the top surface of the lower base 12. When the threaded column 8 enters the threaded connecting cylinder 18, the drive motor 21 installed on the top surface of the fixed seat 17 at the rear end of the lower base 12 can be turned on. The drive motor 21 will drive the second gear 22 to rotate. The second gear 22 will drive the first gear 20 to rotate under the action of rotational meshing. The first gear 20 will drive the first gear 20 to rotate. The rotating rod 19 on the top surface rotates within the bearing 16 installed in the fixing hole 15 on the top surface of the lower base 12. The rotating rod 19 drives the threaded connecting cylinder 18 to rotate, so that the threaded connecting cylinder 18 is threadedly connected to the threaded column 8. This eliminates the need for manual operation after each tensioning operation, thus completing the tension adjustment operation of the hanger body 2. The deeper the threaded column 8 enters the threaded connecting cylinder 18, the greater the tension adjustment of the hanger body 2. Thus, the connecting mechanism 4 facilitates the quick installation and use of the tensioning mechanism 3 and the rapid tensioning operation of the hanger body 2. The operation is simple and convenient, and the entire device can be easily disassembled and reassembled between different hanger bodies 2, thereby improving the efficiency of construction work.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, various improvements can be made to it without departing from the scope of the present utility model, and components can be replaced with equivalents or some technical features can be replaced with equivalents. All such improvements within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tensioning device for an arch bridge suspender, comprising a base (1) and a suspender body (2), characterized in that: A tensioning mechanism (3) is provided between the base (1) and the suspension rod body (2), and the tensioning mechanism (3) includes a push seat (9), a lower base (12), a threaded rod (13), a tensioning jack (14), a threaded connecting cylinder (18), a first gear (20), a drive motor (21), and a second gear (22). The push seat (9) is provided with a symmetrical set and fixedly connected together, and a symmetrical threaded rod (13) is fixedly connected to the top surface of the lower base (12) and passes through the push seat (9). The threaded rod (13) passes through the tensioning jack (14) and is fixedly connected to the tensioning jack (14), and the output end of the tensioning jack (14) is fixedly connected to the push seat (9). The threaded connecting cylinder (18) is movably connected to the top surface of the lower base (12) through the rotating rod (19) at the bottom end, and the first gear (20) is fixedly connected to the top surface of the lower base (12). The drive motor (21) is fixedly connected to the bottom end of the rotating rod (19), and the second gear (22) is fixedly connected to the output end of the drive motor (21) and meshes with the first gear (20). The tensioning mechanism (3) is fixedly connected to the base (1) through the bottom connecting mechanism (4). The connecting mechanism (4) includes a base plate (24), a mounting column (27), a screw knob (29), and a limiting pin (30). The base plate (24) is fixedly connected to the bottom of the lower base (12) through the concave seat (23) at the top end, and the mounting column (27) is fixedly connected to the front end of the base plate (24). The screw knob (29) is movably connected to the fixing block (25) at the front end of the base plate (24), and the limiting pin (30) is fixedly connected to the bottom end of the screw knob (29).

2. The arch bridge suspension tensioning device according to claim 1, characterized in that: The push base (9) is provided with a set of left and right symmetrical ones and fixed together by bolts and nuts. The opposite walls of the left and right symmetrical push bases (9) are respectively provided with rod through holes (10). The top surface of the push base (9) and the top surface of the lower base (12) are respectively provided with connecting guide holes (11). The upper and lower ends of the two threaded rods (13) are respectively inserted into the connecting guide holes (11) on the top surfaces of the push base (9) and the lower base (12). The threaded rods (13) are also fixedly connected to the lower base (12) by bolts. The output end of the tension jack (14) is fixedly installed on the top surface of the push base (9), and the threaded rods (13) pass through the tension jack (14) and are fixedly installed together with the tension jack (14).

3. The arch bridge suspension tensioning device according to claim 2, characterized in that: The boom body (2) passes through the boom through hole (10), and a connecting column (7) is fixedly installed at the bottom end of the boom body (2), and a threaded column (8) is fixedly installed at the bottom end of the connecting column (7).

4. The arch bridge suspension tensioning device according to claim 3, characterized in that: A fixing hole (15) is provided at the center of the top surface of the lower base (12), and a bearing (16) is fixedly installed in the hole of the fixing hole (15). A fixing seat (17) is fixedly installed on the rear end wall of the lower base (12), and a drive motor (21) is fixedly installed on the top surface of the fixing seat (17). The second gear (22) is fixedly installed on the output end of the drive motor (21). The threaded connecting cylinder (18) is threadedly connected to the threaded column (8), and a rotating rod (19) is fixedly installed at the bottom end of the threaded connecting cylinder (18). The rotating rod (19) is inserted and fixedly installed together with the bearing (16), and a first gear (20) is fixedly installed at the bottom end of the rotating rod (19) and meshes with the second gear (22).

5. The arch bridge suspension tensioning device according to claim 4, characterized in that: The base (1) has an installation hole (5) on its front wall and a limit hole (6) on its top surface.

6. The arch bridge suspension tensioning device according to claim 5, characterized in that: The concave seat (23) is fixedly installed on the bottom surface of the lower base (12), and the base plate (24) is fixedly installed on the bottom surface of the concave seat (23). The fixing block (25) is fixedly installed on the front wall of the base plate (24), and the top surface of the fixing block (25) is provided with a threaded hole (26). The mounting post (27) is fixedly installed on the front wall of the base plate (24) and located below the fixing block (25). The mounting post (27) is inserted into the mounting hole (5). The outer wall of the mounting post (27) is provided with a through hole (28). The screw knob (29) is threadedly connected to the threaded hole (26), and the limiting pin (30) is fixedly installed at the bottom end of the screw knob (29) and passes through the through hole (28) and is inserted into the limiting hole (6).

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