Arch rib linear compensation tensioning adjusting device for bridge construction

Abstract

This utility model relates to the field of bridge construction technology, specifically to an arch rib alignment compensation tensioning and adjustment device for bridge construction. It includes a base plate and a tensioning mechanism. The base plate is used to connect to the anchor beam on the anchor tower. The tensioning mechanism is equipped with a guide seat, an adjusting rod, a linear drive assembly, and a limiting assembly. The linear drive assembly pushes the adjusting rod to move axially along the guide seat, causing displacement changes in the anchor plate and the anchor cable, thereby adjusting the tension of the anchor cable. By coordinating the tensioning of multiple anchor cables, the arch rib alignment can be precisely controlled. The limiting assembly can lock the adjusting rod after adjustment, ensuring that it remains in its current position during construction. The advantage of this device is that it can achieve precise and efficient adjustment of the anchor cable tension through mechanical transmission, reducing the safety risks of manual operation. Its high structural integration and controllable tensioning process are beneficial to improving the accuracy and efficiency of arch rib alignment adjustment, ensuring construction progress and overall project quality.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and more specifically, to an arch rib linear compensation tensioning adjustment device for bridge construction. Background Technology

[0002] Bridge construction is a complex and systematic project, typically comprising four main steps: foundation construction, substructure construction, superstructure construction, and deck system construction. The arch rib is the primary load-bearing component of an arch bridge, converting the vertical load from the bridge deck into axial pressure and transferring it to the arch foot foundation. The choice of construction method is crucial, directly impacting project quality, safety, and cost. Major methods include the scaffolding method, cantilever construction method, and rotation construction method. Among these, the cantilever construction method is widely used in the arch rib construction of long-span bridges due to its advantages, such as being unaffected by the terrain, water flow, and navigation conditions beneath the bridge. The cantilever construction method involves assembling from both sides towards the middle, eliminating the need for extensive scaffolding under the bridge. Starting from the arch foot foundation, segments are extended sequentially, each new segment secured to the existing structure or piers by temporary cables or ties to maintain balance until the arch rib is closed. The cantilever construction method is technically complex, requiring high control over the arch rib alignment and stress, and necessitates a reliable temporary rigging system.

[0003] Currently, the adjustment of the arch rib alignment mainly relies on technicians operating jacks on-site to fine-tune the ties, followed by re-measurement to confirm whether the alignment meets design requirements. This method is not only inefficient and has limited adjustment accuracy, but also carries high safety risks, seriously affecting the project's construction progress. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an arch rib alignment compensation tensioning and adjustment device for bridge construction, aiming to provide a device capable of automatically adjusting the arch rib alignment, reducing manual intervention, improving the safety factor, and enhancing the adjustment accuracy of the arch rib alignment.

[0005] A bridge construction arch rib linear compensation tensioning adjustment device according to an embodiment of the present invention includes: substrate; The tensioning mechanism includes a guide seat, an adjusting rod, a linear drive assembly, and a limiting assembly. The guide seat is fixedly connected to the base plate, and the adjusting rod is slidably connected to the guide seat. One end of the adjusting rod is provided with a detachable anchor plate, and the other end of the adjusting rod is connected to the linear drive assembly. The linear drive assembly is used to control the movement of the adjusting rod along the axial direction. The limiting assembly is disposed on the guide seat and is used to lock the current position of the adjusting rod.

[0006] According to some embodiments of the present invention, the linear drive assembly includes a first hydraulic cylinder, a second hydraulic cylinder, and a distribution rod. One end of the adjustment rod is provided with a connecting seat. The axis of the distribution rod and the axis of the adjustment rod are perpendicular to each other. The middle section of the distribution rod is rotatably connected to the connecting seat. One end of the first hydraulic cylinder is rotatably connected to the base plate, and the other end of the first hydraulic cylinder is rotatably connected to one end of the distribution rod. One end of the second hydraulic cylinder is rotatably connected to the base plate, and the other end of the second hydraulic cylinder is rotatably connected to the other end of the distribution rod.

[0007] According to some embodiments of the present invention, a first mounting seat and a second mounting seat are provided on one end of the base plate near the anchor plate. The first mounting seat is rotatably connected to the cylinder body of the first hydraulic cylinder, and the second mounting seat is rotatably connected to the cylinder body of the second hydraulic cylinder.

[0008] According to some embodiments of the present invention, a fixing plate is provided at the lower part of the guide seat, a threaded hole is provided on the base plate, and a straight groove hole is provided on the fixing plate corresponding to the threaded hole.

[0009] According to some embodiments of this utility model, the limiting assembly includes a limiting rod and a return spring, and a limiting sleeve is provided on the guide seat; the limiting rod and the limiting sleeve are slidably connected along the axial direction of the limiting rod; a wedge is provided at the lower end of the limiting rod, one end of the wedge is provided on an inclined surface, and the other end is provided on a vertical surface; the adjusting rod is provided with a plurality of limiting grooves along the axial direction, and the wedge can be inserted into the limiting grooves; the return spring is sleeved on the limiting rod, one end of the return spring is connected to the limiting rod, and the other end of the return spring is connected to the limiting sleeve.

[0010] According to some embodiments of the present invention, the limiting component includes a directional pin, the limiting sleeve is provided with a first position hole and a second position hole, the upper end of the directional pin is fixedly connected to the limiting rod, and the limiting rod is inserted into the first position hole or the second position hole.

[0011] According to some embodiments of this utility model, the reset spring is a tension spring.

[0012] According to some embodiments of this utility model, a pull ring is provided at the upper end of the limiting rod.

[0013] According to some embodiments of the present invention, a U-shaped connecting block is provided at each of the four corners of the lower end of the substrate, and the U-shaped connecting block is used to connect the anchor beam.

[0014] According to some embodiments of this utility model, the U-shaped connecting block is provided with reinforcing ribs and countersunk holes.

[0015] A bridge construction arch rib linear compensation tensioning adjustment device according to an embodiment of the present invention has at least the following beneficial effects: According to the present invention, the arch rib alignment compensation tensioning and adjustment device for bridge construction includes a base plate and a tensioning mechanism. The base plate is used to connect the anchor beam on the anchor tower. The tensioning mechanism is equipped with a guide seat, an adjusting rod, a linear drive assembly, and a limiting assembly. The linear drive assembly pushes the adjusting rod to move axially along the guide seat, causing displacement changes in the anchor plate and the anchor cable, thereby adjusting the tension of the anchor cable. By coordinating the tensioning of multiple anchor cables, the arch rib alignment can be precisely controlled. The limiting assembly can lock the adjusting rod after adjustment, ensuring that it remains in its current position during construction. The advantage of this device is that it can achieve precise and efficient adjustment of the anchor cable tension through mechanical transmission, reducing the safety risks of manual operation. Its high structural integration and controllable tensioning process are conducive to improving the accuracy and efficiency of arch rib alignment adjustment, ensuring construction progress and overall project quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top-view structural schematic diagram of the present invention; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 For the present utility model Figure 3 A magnified schematic diagram of the local structure at point A; Figure 5 This is a schematic diagram of the structure of the guide seat of this utility model.

[0017] In the picture: 100-Substrate, 110-First mounting base, 120-Second mounting base, 130-U-shaped connecting block, 131-Reinforcing rib, 132-Counterhead hole; 200-Tensioning mechanism, 210-Guide seat, 211-Fixing plate, 212-Straight slot hole, 213-Limiting sleeve, 214-First position hole, 215-Second position hole, 220-Adjusting rod, 221-Connecting seat, 222-Limiting groove, 230-Linear drive assembly, 231-First hydraulic cylinder, 232-Second hydraulic cylinder, 233-Distribution rod, 240-Limiting assembly, 241-Limiting rod, 242-Reset spring, 243-Wedge block, 244-Inclined surface, 245-Vertical surface, 246-Orientation pin, 247-Pull ring, 250-Anchor plate, 260-Clapping rope. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Reference Figures 1 to 5As shown, this utility model discloses a linear compensation tensioning and adjustment device for arch ribs in bridge construction, including a base plate 100 and a tensioning mechanism 200. The base plate 100 is used to connect the anchor beam on the tower. The tensioning mechanism 200 is provided with a guide seat 210, an adjusting rod 220, a linear drive assembly 230, and a limiting assembly 240. The guide seat 210 is fixedly connected to the base plate 100, and the adjusting rod 220 is slidably connected to the guide seat 210. One end of the adjusting rod 220 is provided with a detachable anchor plate 250, and fastening cables 260 are distributed along the circumferential direction on the anchor plate 250. The other end of the adjusting rod 220 is connected to the linear drive assembly 230, which is used to control the movement of the adjusting rod 220 along the axial direction. The limiting assembly 240 is provided on the guide seat 210 and is used to lock the current position of the adjusting rod 220. In this embodiment, the base plate 100 is connected to the anchor beam on the tower to provide stable support. In the tensioning mechanism 200, the linear drive component 230 pushes the adjusting rod 220 to move axially along the guide seat 210. The anchor plate 250 connected to one end of the adjusting rod 220 drives the circumferentially distributed fastening cables 260 to move synchronously, thereby achieving precise control of the tension of the fastening cables 260. During the adjustment process, the total adjustment amount is first determined by calculation and divided into several equal parts. Then, step-by-step adjustments are made, pushing only one equal part at a time. Afterward, the limiting component 240 locks the adjustment gap to maintain the position of the adjusting rod 220 and reduce the load on the linear drive component 230. After each equal part adjustment is completed and held for a period of time, the arch rib line shape is measured. If it is within the specified range, the adjustment is terminated; if it does not meet the requirements, the adjustment and locking of the next equal part continues. Through the design of this structure, the step-by-step adjustment and intermittent locking method achieves precise control of the tension of the fastening cables 260, effectively avoiding overshoot and reducing the load on the linear drive component 230, which is beneficial to improving the durability and operational stability of the equipment. This device, combining real-time alignment measurement and condition assessment, significantly improves the accuracy and reliability of arch rib alignment control. Simultaneously, the intervention of the limit component 240 further enhances construction safety, preventing accidental backshifting of the adjusting rod 220. The detachable design of the anchor plate 250 also facilitates the installation and replacement of the cable 260, and the overall structure balances adjustment accuracy with engineering applicability.

[0023] In some embodiments of this utility model, the linear drive assembly 230 includes a first hydraulic cylinder 231, a second hydraulic cylinder 232, and a distribution rod 233. One end of the adjusting rod 220 is provided with a connecting seat 221. The axis of the distribution rod 233 is perpendicular to the axis of the adjusting rod 220, and the middle section of the distribution rod 233 is rotatably connected to the connecting seat 221. One end of the first hydraulic cylinder 231 is rotatably connected to the base plate 100, and the other end of the first hydraulic cylinder 231 is rotatably connected to one end of the distribution rod 233. One end of the second hydraulic cylinder 232 is rotatably connected to the base plate 100, and the other end of the second hydraulic cylinder 232 is rotatably connected to the other end of the distribution rod 233. Specifically, in this embodiment, the first hydraulic cylinder 231 and the second hydraulic cylinder 232 work together, or they can perform small-displacement independent movements. When the adjusting rod 220 becomes stuck or jammed, the adjusting rod 220 can be loosened by the alternating small-displacement movements of the first hydraulic cylinder 231 and the second hydraulic cylinder 232.

[0024] In this embodiment, the extension or retraction of the first hydraulic cylinder 231 and the second hydraulic cylinder 232 can respectively drive the movement of both ends of the distribution rod 233. Since the middle section of the distribution rod 233 is rotatably connected to the connecting seat 221 at the end of the adjusting rod 220, and the axis of the distribution rod 233 is perpendicular to the axis of the adjusting rod 220, the movement of the hydraulic cylinders is converted into a pushing or pulling force on the connecting seat 221 through the distribution rod 233, thereby driving the adjusting rod 220 to move precisely along its axial direction. By controlling the coordinated action of the two hydraulic cylinders, a smooth and controllable linear displacement of the adjusting rod 220 can be achieved. In this embodiment, the use of a dual-hydraulic-cylinder drive method also prevents safety hazards caused by the failure of any one of the hydraulic cylinders.

[0025] In some embodiments of this utility model, a first mounting seat 110 and a second mounting seat 120 are provided on the base plate 100 near the anchor plate 250. The first mounting seat 110 is rotatably connected to the cylinder body of the first hydraulic cylinder 231, and the second mounting seat 120 is rotatably connected to the cylinder body of the second hydraulic cylinder 232. Specifically, in this embodiment, the cylinder bodies of the first hydraulic cylinder 231 and the second hydraulic cylinder 232 are rotatably connected to the base plate 100 through the first mounting seat 110 and the second mounting seat 120, respectively. This rotatable connection provides a stable support foundation for the hydraulic cylinders. During operation, the extension or retraction movement of the two hydraulic cylinders is transmitted to both ends of the distribution rod 233 through their piston rods. Since the middle section of the distribution rod 233 is rotatably connected to the connecting seat 221 at the end of the adjusting rod 220, and the axis of the distribution rod 233 is perpendicular to the axis of the adjusting rod 220, the driving force of the hydraulic cylinder is thus efficiently converted into the precise linear movement of the adjusting rod 220 along its axis, thereby realizing the control of the tension of the buckle 260. The hydraulic cylinder body is securely connected to the base plate 100 via the first mounting base 110 and the second mounting base 120, significantly improving the structural rigidity and stability of the entire drive assembly. This mounting method effectively constrains the movement path of the hydraulic cylinder, making its output force direction more precise, reducing ineffective force components and energy loss, while enhancing the system's ability to bear heavy loads and its long-term operational reliability.

[0026] In some embodiments of this utility model, a fixing plate 211 is provided at the lower part of the guide seat 210, and a threaded hole is provided on the base plate 100. A straight slot 212 is provided on the fixing plate 211 corresponding to the threaded hole. The guide seat 210 is connected to the base plate 100 through the fixing plate 211 at its lower part. The straight slot 212 on the fixing plate 211 is aligned with the threaded hole on the base plate 100 and fixed by bolts. Through the design of this structure, the lateral position of the guide seat 210 can be moderately adjusted during installation. After the position is determined, the bolts can be tightened to ensure that the guide seat 210 is firmly connected to the base plate 100, thereby providing a precise and reliable guiding foundation for the axial sliding of the adjusting rod 220.

[0027] In some embodiments of this utility model, the limiting assembly 240 includes a limiting rod 241 and a return spring 242, and a limiting sleeve 213 is provided on the guide seat 210; the limiting rod 241 and the limiting sleeve 213 are slidably connected along the axial direction of the limiting rod 241; a wedge block 243 is provided at the lower end of the limiting rod 241, one end of the wedge block 243 is provided on the inclined surface 244, and the other end is provided on the vertical surface 245; the adjusting rod 220 is provided with a plurality of limiting grooves 222 along the axial direction, and the wedge block 243 can be inserted into the limiting grooves 222; the return spring 242 is sleeved on the limiting rod 241, one end of the return spring 242 is connected to the limiting rod 241, and the other end of the return spring 242 is connected to the limiting sleeve 213. The limiting assembly 240 achieves reliable locking of the adjusting rod 220 through mechanical engagement. The limiting rod 241 can slide axially within the limiting sleeve 213, and the wedge 243 connected to its lower end can be inserted into any limiting groove 222 on the adjusting rod 220. The inclined surface 244 of the wedge 243 allows the adjusting rod 220 to slide along the inclined surface 244 when unidirectional adjustment is required; while its vertical surface 245 forms a mechanical self-locking mechanism after engagement, effectively resisting reverse loads. The return spring 242 provides continuous downward pressure to the limiting rod 241, ensuring stable contact between the wedge 243 and the limiting groove 222, and automatically resets the limiting rod 241 to the locked position after the external force is released. Through this structural design, the structure is simple and has strong load-bearing capacity. This design achieves self-locking without external power, effectively preventing accidental retraction or slippage of the adjusting rod 220 during construction, greatly improving the safety and stability of the tensioning process. The configuration of the return spring 242 further ensures the automaticity and immediacy of the limiting function, reducing the need for manual intervention.

[0028] In some embodiments of this utility model, the limiting component 240 includes a directional pin 246. A first position hole 214 and a second position hole 215 are provided on the limiting sleeve 213. The upper end of the directional pin 246 is fixedly connected to the limiting rod 241, which is inserted into either the first position hole 214 or the second position hole 215. The orientation of the inclined surface 244 can be changed by setting the directional pin 246. The directional pin 246 is fixedly connected to the limiting rod 241 and can be inserted into either the first position hole 214 or the second position hole 215 on the limiting sleeve 213. By selecting different position holes to install the directional pin 246, the circumferential angle of the limiting rod 241 and the lower wedge 243 can be changed, thereby adjusting the specific orientation of the inclined surface 244 of the wedge 243. This design allows the operator to flexibly configure the working position of the wedge 243 according to the direction of movement that the adjusting rod 220 needs to be locked during actual construction. When the wedge 243 is inserted into the limiting groove 222 of the adjusting rod 220, its inclined surface 244 allows the adjusting rod 220 to slide in one direction for unidirectional adjustment, while the vertical surface 245 forms a firm mechanical self-lock in the opposite direction, preventing any unexpected movement. By simply changing the insertion position of the directional pin 246, the self-locking direction of the system can be quickly changed, allowing the same device to effectively adapt to different construction conditions and stress requirements. This mechanical adjustment method is not only easy to operate, reliable, and durable, but also further improves the safety control accuracy of the tensioning adjustment process, avoiding the risk of structural instability that may be caused by changes in load direction.

[0029] In some embodiments of this utility model, the return spring 242 is a tension spring. In this embodiment, the return spring 242 ensures that the limiting rod 241 abuts against the surface of the adjusting rod 220.

[0030] In some embodiments of this utility model, a pull ring 247 is provided at the upper end of the limiting rod 241. The pull ring 247 facilitates manual operation.

[0031] In some embodiments of this utility model, U-shaped connecting blocks 130 are respectively provided at the four corners of the lower end of the base plate 100. The U-shaped connecting blocks 130 are used to connect the anchor beam. The base plate 100 is firmly connected to the anchor beam through the U-shaped connecting blocks 130 provided at its four corners. The U-shaped structure can wrap around or snap onto the corresponding part of the anchor beam and be fixed by pins or bolts, thereby effectively transferring the load borne by the entire tensioning and adjusting device to the anchor beam and related structures of the tower below.

[0032] In some embodiments of this utility model, the U-shaped connecting block 130 is provided with reinforcing ribs 131 and countersunk holes 132. By providing reinforcing ribs 131, the structural strength of the U-shaped connecting block 130 can be improved, and by providing countersunk holes 132, the base plate 100 can be securely fixed to the anchor beam.

[0033] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A bridge construction arch rib linear compensation tensioning adjustment device, characterized in that, include: substrate(100); The tensioning mechanism (200) is provided with a guide seat (210), an adjusting rod (220), a linear drive assembly (230), and a limiting assembly (240). The guide seat (210) is fixedly connected to the base plate (100), and the adjusting rod (220) is slidably connected to the guide seat (210). One end of the adjusting rod (220) is provided with a detachable anchor plate (250), and the other end of the adjusting rod (220) is connected to the linear drive assembly (230). The linear drive assembly (230) is used to control the adjusting rod (220) to move along the axial direction. The limiting assembly (240) is provided on the guide seat (210) and is used to lock the current position of the adjusting rod (220).

2. The arch rib linear compensation tensioning adjustment device for bridge construction according to claim 1, characterized in that, The linear drive assembly (230) includes a first hydraulic cylinder (231), a second hydraulic cylinder (232), and a distribution rod (233). One end of the adjusting rod (220) is provided with a connecting seat (221). The axis of the distribution rod (233) and the axis of the adjusting rod (220) are perpendicular to each other. The middle section of the distribution rod (233) is rotatably connected to the connecting seat (221). One end of the first hydraulic cylinder (231) is rotatably connected to the base plate (100), and the other end of the first hydraulic cylinder (231) is rotatably connected to one end of the distribution rod (233). One end of the second hydraulic cylinder (232) is rotatably connected to the base plate (100), and the other end of the second hydraulic cylinder (232) is rotatably connected to the other end of the distribution rod (233).

3. The arch rib linear compensation tensioning adjustment device for bridge construction according to claim 2, characterized in that, A first mounting base (110) and a second mounting base (120) are provided on one end of the base plate (100) near the anchor plate (250). The first mounting base (110) is rotatably connected to the cylinder body of the first hydraulic cylinder (231), and the second mounting base (120) is rotatably connected to the cylinder body of the second hydraulic cylinder (232).

4. The arch rib linear compensation tensioning adjustment device for bridge construction according to claim 1, characterized in that, The guide seat (210) is provided with a fixing plate (211) at its lower part. The base plate (100) is provided with a threaded hole, and the fixing plate (211) is provided with a straight slot hole (212) corresponding to the threaded hole.

5. The arch rib linear compensation tensioning adjustment device for bridge construction according to claim 1, characterized in that, The limiting assembly (240) includes a limiting rod (241) and a return spring (242). A limiting sleeve (213) is provided on the guide seat (210). The limiting rod (241) and the limiting sleeve (213) are slidably connected along the axial direction of the limiting rod (241). A wedge (243) is provided at the lower end of the limiting rod (241). One end of the wedge (243) is provided on an inclined surface (244), and the other end is provided on a vertical surface (245). The adjusting rod (220) is provided with multiple limiting grooves (222) along the axial direction. The wedge (243) can be inserted into the limiting grooves (222). The return spring (242) is sleeved on the limiting rod (241). One end of the return spring (242) is connected to the limiting rod (241), and the other end of the return spring (242) is connected to the limiting sleeve (213).

6. The arch rib linear compensation tensioning adjustment device for bridge construction according to claim 5, characterized in that, The limiting component (240) includes a directional pin (246), and the limiting sleeve (213) is provided with a first position hole (214) and a second position hole (215). The upper end of the directional pin (246) is fixedly connected to the limiting rod (241), and the limiting rod (241) is inserted into the first position hole (214) or the second position hole (215).

7. The arch rib linear compensation tensioning adjustment device for bridge construction according to claim 5, characterized in that, The reset spring (242) is a tension spring.

8. The arch rib linear compensation tensioning adjustment device for bridge construction according to claim 5, characterized in that, The upper end of the limiting rod (241) is provided with a pull ring (247).

9. The arch rib linear compensation tensioning adjustment device for bridge construction according to claim 1, characterized in that, U-shaped connecting blocks (130) are respectively provided at the four corners of the lower end of the substrate (100), and the U-shaped connecting blocks (130) are used to connect the anchor beam.

10. The arch rib linear compensation tensioning adjustment device for bridge construction according to claim 9, characterized in that, The U-shaped connecting block (130) is provided with reinforcing ribs (131) and countersunk holes (132).

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