Footbridge hinge shaft expansion joint structure
By designing the footbridge hinge shaft expansion joint structure, the rotation and fixing of the hinge shaft and the hinge box, combined with the design of the rubber water stop belt and reserved groove, the expansion deformation and angle problems of the footbridge under temperature stress are solved, and safety and comfort are improved.
Patent Information
- Application Number
- CN202422047119.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The footbridge has large convergence deformation and beam end corner problems under temperature stress. The traditional expansion joint structure cannot be effectively solved, resulting in safety hazards.
A pedestrian bridge hinge shaft expansion joint structure is designed, including expansion joints, rubber water stops, cover plates, cover plates, under-cushion plates, bolts, hinge shafts and hinge box. Through the rotation of the hinge shaft and the fixation of the hinge box, a smaller rotation angle is formed, and through the design of the rubber water stops and reserved grooves, fixing and draining water.
It effectively solves the problems of large longitudinal deformation and corners of the beam end, improves the safety and comfort of the footbridge, and is convenient for processing and installation methods and strong applicability.
Smart Images
Figure CN223017419U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a hinge shaft expansion joint structure for a pedestrian bridge. Background Art
[0002] Most pedestrian bridges are landscape bridges with a small curve radius. For cast-in-place beams or steel beams, under temperature stress, in addition to large longitudinal expansion and contraction deformations along the bridge direction, there are also obvious beam end rotations. The traditional TST seamless expansion joint cannot be applied to large expansion and contraction deformations, otherwise settlement or cracking is likely to occur at the joint; while the traditional simple steel plate (aluminum plate) expansion joints for pedestrian bridges cannot solve the problem of beam end rotation, which easily causes the unilateral upward warping of the expansion joint steel plate, endangering the safety of pedestrians. As a result, there are many potential safety hazards during the operation of the expansion joints of pedestrian bridges, becoming a major technical problem. Summary of the Utility Model
[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies existing in the prior art, and provide a hinge shaft expansion joint structure for a pedestrian bridge with a reasonable structural design, which well solves the problems of large longitudinal deformation at the beam end and large beam end rotation, resulting in potential safety hazards for pedestrians.
[0004] The technical solution adopted by the utility model to solve the above problems is: a hinge shaft expansion joint structure for a pedestrian bridge, including an expansion joint and a rubber water stop belt. The rubber water stop belt is laid on the expansion joint, and the left and right sides of the rubber water stop belt are respectively laid on the components on the left and right sides of the expansion joint; its characteristics are: it also includes a cover plate, a backing plate under the cover plate, bolts, a hinge shaft and a hinge box; the hinge box is fixed on the component on the right side of the expansion joint, the hinge box is arranged on the right side of the rubber water stop belt to fix the right side of the rubber water stop belt; the backing plate under the cover plate is fixed on the component on the left side of the expansion joint, the backing plate under the cover plate is arranged on the left side of the rubber water stop belt to fix the left side of the rubber water stop belt; the cover plate is located above the rubber water stop belt, the right side of the cover plate is rotatably installed on the hinge box through the hinge shaft, and the left side of the cover plate is arranged on the backing plate under the cover plate; the cover plate is provided with a waist-shaped hole, the bolt is located in the waist-shaped hole, and the bolt fixes the backing plate under the cover plate and the rubber water stop belt on the component on the left side of the expansion joint.
[0005] The utility model is provided with reserved grooves on the components on the left and right sides of the expansion joint, and the left and right sides of the rubber water stop belt are respectively laid on the reserved grooves of the components on the left and right sides of the expansion joint.
[0006] The hinge box of the utility model includes a hinge box side plate, a hinge box bottom plate, a hinge box top plate and a hinge box back plate. The hinge box side plate, the hinge box bottom plate, the hinge box top plate and the hinge box back plate are fixed together. The hinge box side plate is located at the side of the hinge box, the hinge box bottom plate is located at the bottom of the hinge box, the hinge box top plate is located at the top of the hinge box, and the hinge box back plate is located at the back of the hinge box.
[0007] The hinge box bottom plate of the utility model is arranged on the right side of the rubber water stop belt to fix the right side of the rubber water stop belt.
[0008] The hinge box bottom plate described in this utility model is in the shape of a slope inclined towards the expansion joint direction.
[0009] This utility model is provided with a sealing strip at the joint of the hinge shaft and the hinge box top plate.
[0010] Compared with the prior art, this utility model has the following advantages and effects:
[0011] 1) It well solves the difficult problem of large longitudinal deformation at the beam end and large beam end rotation angle, which leads to potential safety hazards for pedestrians. The processing and installation methods are convenient and the applicability is strong.
[0012] 2) It has strong adaptability and pertinence, and can effectively solve similar engineering practical problems of poor safety and comfort of expansion joints on pedestrian bridges. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic elevational structure diagram of an embodiment of this utility model.
[0014] Figure 2 is a schematic top view structure diagram of an embodiment of this utility model.
[0015] Figure 3 is a schematic bottom view structure diagram of an embodiment of this utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] The following further details this utility model in conjunction with the drawings and through embodiments. The following embodiments are explanations of this utility model and this utility model is not limited to the following embodiments.
[0017] The embodiment of this utility model includes a cover plate 1, a backing plate 2 under the cover plate, a bolt 3, a hinge shaft 4, a hinge box, a rubber waterstop 9, a sealing strip 10, and an expansion joint 11.
[0018] The rubber waterstop 9 is laid on the expansion joint 11; reserved grooves are provided on the components on both the left and right sides of the expansion joint 11, and the left and right sides of the rubber waterstop 9 are respectively laid on the reserved grooves of the components on both the left and right sides of the expansion joint 11.
[0019] The hinge box is fixed on the component on the right side of the expansion joint 11. The hinge box includes a hinge box side plate 5, a hinge box bottom plate 6, a hinge box top plate 7, and a hinge box back plate 8. The hinge box side plate 5, the hinge box bottom plate 6, the hinge box top plate 7, and the hinge box back plate 8 are welded and fixed together. The hinge box side plate 5 is located at the side of the hinge box, the hinge box bottom plate 6 is located at the bottom of the hinge box, the hinge box top plate 7 is located at the top of the hinge box, and the hinge box back plate 8 is located at the back of the hinge box. The hinge box bottom plate 6 is arranged on the right side of the rubber waterstop 9 to fix the right side of the rubber waterstop 9. The hinge box bottom plate 6 is in the shape of a slope inclined towards the expansion joint 11 direction, and the slope is 2%.
[0020] The lower backing plate 2 of the cover plate is fixed on the component on the left side of the expansion joint 11. The lower backing plate 2 of the cover plate is arranged on the left side of the rubber waterstop 9 to fix the left side of the rubber waterstop 9.
[0021] The cover plate 1 is located above the rubber waterstop 9. The right side of the cover plate 1 is rotatably installed on the side plate 5 of the hinge box of the hinge box through the hinge shaft 4, and the left side of the cover plate 1 is arranged on the lower backing plate 2 of the cover plate; a waist-shaped hole 101 is arranged on the cover plate 1, and the bolt 3 is located in the waist-shaped hole 101. The bolt 3 fixes the lower backing plate 2 of the cover plate and the rubber waterstop 9 on the component on the left side of the expansion joint 11.
[0022] A sealing strip 10 is arranged at the joint of the hinge shaft 4 and the top plate 7 of the hinge box.
[0023] The cover plate 1, the lower backing plate 2 of the cover plate, the hinge shaft 4, and the hinge box are all made of Q235 steel, and the bolt 3 is M10 (8.8 grade).
[0024] By arranging the waist-shaped hole 101 and the matching bolt 3 on the cover plate 1, the deformation requirement in the longitudinal direction of the bridge can be met; through the rotation of the hinge shaft 4, a small angle can be formed between the hinge box and the cover plate 1, so that when there is a relative rotation angle at the beam end, the cover plate 1 does not warp upward and does not affect the walking safety; a rubber waterstop 9 is laid on the expansion joint 11 and fixed by the bottom plate 6 of the hinge box and the lower backing plate 2 of the cover plate. If there is slight water seepage at the hinge shaft 4, it can be collected by the waterstop and led out to the side of the bridge to meet the drainage requirement of the expansion joint.
[0025] In addition, it should be noted that for the specific embodiments described in this specification, the shapes and names of their components can be different. The above content described in this specification is only an example of the structure of the present invention. Any equivalent changes or simple changes made according to the structure, features, and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Those skilled in the art of the present invention can make various modifications, supplements, or use similar methods to replace the specific embodiments described, as long as they do not deviate from the structure of the present invention or exceed the scope defined by this claim book, they should all belong to the protection scope of the present invention.
Claims
1. A hinged shaft expansion joint structure of a pedestrian bridge, comprising an expansion joint and a rubber water stop, wherein the rubber water stop is laid on the expansion joint, and the left and right sides of the rubber water stop are respectively laid on the components on the left and right sides of the expansion joint; characterized in that: It also includes a cover plate, a cover plate lower pad, bolts, a hinge shaft and a hinge box; the hinge box is fixed to the component on the right side of the expansion joint, and the hinge box is arranged on the right side of the rubber waterstop to fix the right side of the rubber waterstop; the cover plate lower pad is fixed to the component on the left side of the expansion joint, and the cover plate lower pad is arranged on the left side of the rubber waterstop to fix the left side of the rubber waterstop; the cover plate is located above the rubber waterstop, the right side of the cover plate is rotatably mounted on the hinge box through the hinge shaft, and the left side of the cover plate is arranged on the cover plate lower pad; a waist hole is arranged on the cover plate, and the bolt is located in the waist hole, and the bolt fixes the cover plate lower pad and the rubber waterstop to the component on the left side of the expansion joint.
2. The hinged axis expansion joint structure of a pedestrian bridge according to claim 1, characterized in that: Reserved grooves are arranged on the components on the left and right sides of the expansion joint, and the left and right sides of the rubber water stop are respectively laid on the reserved grooves of the components on the left and right sides of the expansion joint.
3. The hinged axis expansion joint structure of a pedestrian bridge according to claim 1, characterized in that: The hinge box comprises a hinge box side plate, a hinge box bottom plate, a hinge box top plate and a hinge box back plate, which are fixed together. The hinge box side plate is located on the side of the hinge box, the hinge box bottom plate is located at the bottom of the hinge box, the hinge box top plate is located at the top of the hinge box, and the hinge box back plate is located at the back of the hinge box.
4. The hinged axis expansion joint structure of a pedestrian bridge according to claim 3, characterized in that: The hinge box bottom plate is arranged on the right side of the rubber water stop to fix the right side of the rubber water stop.
5. The hinged axis expansion joint structure of a pedestrian bridge according to claim 3, characterized in that: The hinge box bottom plate is in a slope shape inclined toward the expansion joint direction.
6. The hinged axis expansion joint structure of a pedestrian bridge according to claim 3, characterized in that: A sealing strip is arranged at the joint between the hinge shaft and the hinge box top plate.