Anti-loosening device for arch rib hinged shaft

Abstract

The utility model provides an arch rib hinge shaft anti-loosening device which comprises an annular baffle and a stiffening plate assembly, the annular baffle is used for being arranged on a hinge shaft embedded plate, an installation groove used for installing an arch rib hinge shaft is formed in the hinge shaft embedded plate, and the stiffening plate assembly is arranged in the installation groove. The two opposite ends of the annular baffle are located on the two opposite sides of the mounting groove respectively and connected to a hinged shaft pre-embedded plate, and the annular baffle is used for being arranged on the side, back on to the hinged shaft pre-embedded plate, of the arch rib hinged shaft in a blocking mode; the stiffening plate assembly is fixedly connected to the peripheral face, back on to the mounting groove, of the annular baffle. The arch rib hinge shaft mounting structure can improve the mounting stability and safety of the arch rib hinge shaft, and can prevent the arch rib hinge shaft from being disengaged from the mounting groove in the process of vertically rotating the arch rib to adjust the elevation.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge engineering technical field, concretely relates to an arch rib hinge shaft anti-loosening device. BACKGROUND

[0002] Steel pipe concrete arch bridge generally adopts cable hoisting system to install arch rib, and in most cases, the arch rib of steel pipe arch bridge needs to be installed in sections. When the first section of arch rib is installed, the arch rib hinge shaft at the bottom end of the first section of arch rib needs to be embedded into the installation slot on the hinge shaft pre-buried plate pre-buried in the arch seat; the subsequent arch rib sections are sequentially connected with the previous arch rib section. With the increase of the arch rib sections, the cantilever end of the arch rib is continuously lengthened, and the arch rib needs to be vertically rotated to adjust the elevation. In the process of adjusting the elevation, the arch rib hinge shaft often loosens due to various external forces, and even falls out of the installation slot, which delays the construction progress and has a major safety hazard, and the construction risk coefficient is high. The existing arch rib hinge shaft limiting device usually considers the transverse sliding and slipping of the arch rib hinge shaft in the installation slot and protects it, but lacks consideration of the direct falling of the arch rib hinge shaft from the installation slot under various external forces. Once the arch rib hinge shaft falls out of the installation slot, the vertical rotation of the arch rib will lose the rotation fulcrum, greatly increasing the risk in the construction process. Therefore, in order to solve this problem, an arch rib hinge shaft anti-loosening device is urgently needed to improve the stability and safety of the installation of the arch rib hinge shaft. SUMMARY

[0003] The utility model aims at solving the above-mentioned technical problem, provides an arch rib hinge shaft anti-loosening device, which can improve the stability and safety of the installation of the arch rib hinge shaft, and can prevent the arch rib hinge shaft from falling out of the installation slot in the process of vertically rotating the arch rib to adjust the elevation.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] An arch rib hinge shaft anti-loosening device, comprising a ring-shaped baffle and a stiffened plate assembly, the ring-shaped baffle is used for being installed on a hinge shaft pre-buried plate, the hinge shaft pre-buried plate is provided with an installation slot for installing an arch rib hinge shaft, the opposite ends of the ring-shaped baffle are located at the opposite sides of the installation slot and are connected to the hinge shaft pre-buried plate, and the ring-shaped baffle is used for being blocked on the side of the arch rib hinge shaft away from the hinge shaft pre-buried plate; the stiffened plate assembly is fixedly connected to the outer peripheral surface of the ring-shaped baffle away from the installation slot.

[0006] Further, the curvature of the ring-shaped baffle is matched with the curvature of the arch rib hinge shaft.

[0007] Further, the opposite ends of the ring-shaped baffle are fixed to the hinge shaft pre-buried plate by welding.

[0008] Furthermore, the stiffening plate assembly includes several longitudinal stiffening plate groups and several transverse stiffening plates, all fixed to the outer circumferential surface of the annular baffle. The longitudinal stiffening plate groups are spaced apart along the circumference of the annular baffle, and each longitudinal stiffening plate group includes multiple longitudinal stiffening plates. The multiple longitudinal stiffening plates in each group are spaced apart along the width direction of the annular baffle. A transverse stiffening plate is provided between two adjacent longitudinal stiffening plate groups, and the transverse stiffening plate extends along the width direction of the annular baffle.

[0009] Furthermore, each of the transverse stiffening plates is connected to the longitudinal stiffening plates in the two adjacent longitudinal stiffening plate groups on its opposite sides.

[0010] Furthermore, each of the longitudinal stiffening plate groups includes three longitudinal stiffening plates, which are spaced apart along the width direction of the annular baffle.

[0011] Furthermore, the longitudinal stiffening plate is an arc-shaped plate, and the curvature of the longitudinal stiffening plate is adapted to the curvature of the annular baffle.

[0012] By adopting the above technical solution, this utility model has the following beneficial effects:

[0013] After the arch rib hinge shaft at the bottom end of the first segment of the arch rib is embedded into the mounting groove on the hinge shaft pre-embedded plate, the opposite ends of the annular baffle of the aforementioned arch rib hinge shaft anti-loosening device are fixed to the hinge shaft pre-embedded plate. This ensures the annular baffle is positioned on the side of the hinge shaft facing away from the pre-embedded plate, preventing the arch rib hinge shaft from directly detaching from the mounting groove under various external forces. Simultaneously, the annular baffle can be installed between the two sets of connecting rods connecting the arch rib hinge shaft and the first segment of the arch rib. Through the cooperation of the two sets of connecting rods and the annular baffle, the risk of lateral slippage or detachment of the arch rib hinge shaft along the mounting groove under various external forces can also be avoided, greatly ensuring safety during construction. The stiffening plate assembly improves the rigidity and stability of the annular baffle, preventing deformation or breakage under stress. The aforementioned arch rib hinge shaft anti-loosening device has a simple structure, is easy to manufacture, and is simple to install, facilitating construction. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the usage state of the arch rib hinge anti-loosening device according to a preferred embodiment of the present invention.

[0015] Figure 2 A schematic diagram of the structure of the arch rib hinge anti-loosening device of the present utility model when it is installed on the hinge pre-embedded plate, which is a preferred embodiment of the present utility model.

[0016] Figure 3 for Figure 2 The diagram shows the structure of the anti-loosening device for the arch rib hinge shaft.

[0017] Figure 4 for Figure 3 A schematic diagram of the right-side view structure;

[0018] In the attached diagram, 100 is the anti-loosening device for the arch rib hinge shaft; 10 is the annular baffle; 30 is the stiffening plate assembly; 31 is the longitudinal stiffening plate assembly; 311 is the longitudinal stiffening plate; 36 is the transverse stiffening plate; 200 is the hinge shaft embedded plate; 210 is the mounting groove; 300 is the arch seat; 400 is the first segment of the arch rib; 410 is the arch rib hinge shaft; and 430 is the connecting rod. 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] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please also see Figures 1 to 4 A preferred embodiment of the present invention provides an anti-loosening device 100 for an arch rib hinge shaft, comprising an annular baffle 10 and a stiffening plate assembly 30, wherein the stiffening plate assembly 30 is fixed to the outer circumferential surface of the annular baffle 10.

[0023] The annular baffle 10 is used to install on a hinge shaft embedded plate 200, which is embedded in the arch seat 300 during construction. The hinge shaft embedded plate 200 has an installation groove 210 for installing the arch rib hinge shaft 410. The structure of the hinge shaft embedded plate 200 is prior art and will not be described in detail here for brevity.

[0024] The two opposite ends of the annular baffle 10 are located on opposite sides of the mounting groove 210 and connected to the hinge shaft embedded plate 200. The annular baffle 10 is used to block the side of the arch rib hinge shaft 410 facing away from the hinge shaft embedded plate 200. In this embodiment, the two opposite ends of the annular baffle 10 are fixed to the hinge shaft embedded plate 200 by welding. The curvature of the annular baffle 10 matches the curvature of the arch rib hinge shaft 410, so as not to hinder the rotation of the arch rib hinge shaft 410 in the mounting groove 210, and to increase the contact area between the annular baffle 10 and the arch rib hinge shaft 410, so that the annular baffle 10 is subjected to uniform force and avoids damage caused by force concentration.

[0025] The stiffening plate assembly 30 is fixedly connected to the outer peripheral surface of the annular baffle 10 facing away from the mounting groove 210. In this embodiment, the stiffening plate assembly 30 includes a plurality of longitudinal stiffening plate groups 31 and a plurality of transverse stiffening plates 36, all fixed to the outer peripheral surface of the annular baffle 10. The plurality of longitudinal stiffening plate groups 31 are spaced apart along the circumference of the annular baffle 10, and each longitudinal stiffening plate group 31 includes multiple longitudinal stiffening plates 311, which are spaced apart along the width direction of the annular baffle 10. In this embodiment, each longitudinal stiffening plate group 31 includes three longitudinal stiffening plates 311, which are spaced apart along the width direction of the annular baffle 10. The longitudinal stiffening plate 311 is an arc-shaped plate extending circumferentially along the annular baffle 10, and the curvature of the longitudinal stiffening plate 311 is adapted to the curvature of the annular baffle 10, thereby increasing the contact area between the longitudinal stiffening plate 311 and the annular baffle 10, making the connection more stable, and reducing stress concentration at the connection. In this embodiment, the longitudinal stiffening plate 311 and the annular baffle 10 are fixed by welding. A transverse stiffening plate 36 is provided between two adjacent longitudinal stiffening plate groups 31, and the transverse stiffening plate 36 extends along the width direction of the annular baffle 10. The opposite sides of each transverse stiffening plate 36 are respectively connected to the longitudinal stiffening plates 311 in the two adjacent longitudinal stiffening plate groups 31. In this embodiment, the bottom side of the transverse stiffening plate 36 is fixed to the outer peripheral surface of the annular baffle 10 by welding, and the opposite sides of the transverse stiffening plate 36 are fixed to the longitudinal stiffening plates 311 of the two adjacent longitudinal stiffening plate groups 31 by welding, so that they become a whole, further improving the strength of the arch rib hinge anti-loosening device 100.

[0026] In the prior art, the bottom end of the first segment 400 of the arch rib is provided with an arch rib hinge shaft 410, and the arch rib hinge shaft 410 is fixedly connected to the first segment 400 of the arch rib by two connecting rods 430 spaced apart along the axial direction of the arch rib hinge shaft 410. During the installation of the first segment 400 of the arch rib, the arch rib hinge shaft 410 at the bottom end of the first segment 400 is embedded into the mounting groove 210 on the hinge shaft embedded plate 200. Then, the opposite ends of the annular baffle 10 of the arch rib hinge shaft anti-loosening device 100 are fixed to the hinge shaft embedded plate 200, so that the annular baffle 10 is positioned on the side of the arch rib hinge shaft 410 facing away from the hinge shaft embedded plate 200, to avoid the risk of the arch rib hinge shaft 410 falling directly out of the mounting groove 210 under various external forces. At the same time, the annular baffle 10 can be installed between the two connecting rods 430 of the first segment 400 of the arch rib. Through the cooperation of the two connecting rods 430 and the annular baffle 10, the risk of the arch rib hinge shaft 410 sliding laterally or slipping out along the mounting groove 210 under various external forces can also be avoided, greatly ensuring the safety during construction. The stiffening plate assembly 30 improves the rigidity and stability of the annular baffle 10, preventing deformation or breakage under stress. The aforementioned arch rib hinge anti-loosening device 100 has a simple structure, is easy to manufacture, and is easy to install, facilitating construction.

[0027] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A device for preventing loosening of an arch rib hinge shaft, characterized in that: The device includes an annular baffle and a stiffening plate assembly. The annular baffle is mounted on a hinge shaft embedded plate. The hinge shaft embedded plate has a mounting groove for mounting an arch rib hinge shaft. The opposite ends of the annular baffle are located on opposite sides of the mounting groove and connected to the hinge shaft embedded plate. The annular baffle is used to block the side of the arch rib hinge shaft facing away from the hinge shaft embedded plate. The stiffening plate assembly is fixedly connected to the outer circumferential surface of the annular baffle facing away from the mounting groove.

2. The anti-loosening device for the arch rib hinge shaft as described in claim 1, characterized in that: The curvature of the annular baffle is adapted to the curvature of the arch rib hinge shaft.

3. The anti-loosening device for the arch rib hinge shaft as described in claim 1, characterized in that: The opposite ends of the annular baffle are fixed to the hinge shaft embedded plate by welding.

4. The anti-loosening device for the arch rib hinge shaft as described in claim 1, characterized in that: The stiffening plate assembly includes several longitudinal stiffening plate groups and several transverse stiffening plates, all fixed to the outer circumferential surface of the annular baffle. The longitudinal stiffening plate groups are spaced apart along the circumference of the annular baffle. Each longitudinal stiffening plate group includes multiple longitudinal stiffening plates, and the multiple longitudinal stiffening plates in each group are spaced apart along the width direction of the annular baffle. A transverse stiffening plate is provided between two adjacent longitudinal stiffening plate groups, and the transverse stiffening plate extends along the width direction of the annular baffle.

5. The anti-loosening device for the arch rib hinge shaft as described in claim 4, characterized in that: Each of the transverse stiffening plates is connected to the longitudinal stiffening plates in the two adjacent longitudinal stiffening plate groups on its opposite sides.

6. The anti-loosening device for the arch rib hinge shaft as described in claim 4, characterized in that: Each of the longitudinal stiffening plate groups includes three longitudinal stiffening plates, which are spaced apart along the width direction of the annular baffle.

7. The anti-loosening device for the arch rib hinge shaft as described in claim 4, characterized in that: The longitudinal stiffening plate is an arc-shaped plate, and the curvature of the longitudinal stiffening plate is adapted to the curvature of the annular baffle.

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