Movable construction platform for bridge bottom

Abstract

The utility model provides a bridge bottom movable type construction platform which is suitable for a double-amplitude bridge and comprises a walking mechanism, a truss platform and a suspender, the walking mechanism comprises a walking truss, walking wheels and a rotating shaft, and the length of the walking truss in the transverse bridge direction is larger than the width of a middle isolation belt of the bridge. The walking wheels are rotatably arranged at the bottom of the walking truss so that the walking truss can move in the bridge direction, the rotating shaft is rotatably arranged on the walking truss, the truss platform is arranged at the bottom of a bridge, the suspender penetrates through an isolation belt in the middle of the bridge, one end of the suspender is rotatably connected with the walking mechanism through the rotating shaft, and the other end of the suspender is fixedly connected with the truss platform. The walking mechanism on the bridge floor and the truss platform at the beam bottom are connected through the hanging rod, so that the construction platform moving at the beam bottom is formed, the requirements of bridge construction under different conditions can be met, interference on construction on the bridge floor is small, moving and walking are convenient, the bridge can be used in a pier crossing mode, and high turnover practicability is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of bridge construction, and in particular to a mobile construction platform at the bottom of a bridge beam. Background Art

[0002] During the bridge construction process, an operating platform is often set up at the bottom of the beam according to construction needs to provide a working platform or maintenance platform for the bridge construction. Although the construction can be carried out with the help of existing bridge inspection vehicles and other foundation equipment, these sets of equipment often have high operating costs. During the bridge construction process, the walking conditions on the bridge deck are often restricted, making it inconvenient to use bridge inspection vehicles. Utility Model Content

[0003] The purpose of this application is to provide a mobile construction platform for the bottom of a bridge beam suitable for the construction of a double-span bridge, which can meet the requirements of the bottom of the beam construction in different situations and can be used for collapsing piers.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] A mobile construction platform at the bottom of a bridge beam is suitable for a double-span bridge, and comprises a walking mechanism, a truss platform and a hanger. The walking mechanism is placed on the bridge deck, and comprises a walking truss, walking wheels and a rotating shaft. The length of the walking truss along the transverse direction of the bridge is greater than the width of the middle isolation zone of the bridge. The walking wheels are rotatably arranged at the bottom of the walking truss to enable the walking truss to move along the longitudinal direction of the bridge. The rotating shaft is rotatably arranged on the walking truss, and the truss platform is arranged at the bottom of the beam. The hanger passes through the middle isolation zone of the bridge and one end of the hanger is rotatably connected to the walking mechanism through a rotating shaft, and the other end of the hanger is fixedly connected to the truss platform.

[0006] Further configuration: the truss platform includes an upper chord, a lower chord and vertical poles, the vertical poles connect the upper chord and the lower chord in the vertical direction, the upper chord and the lower chord are arranged in two groups side by side in the same horizontal direction, and an upper load-bearing beam is provided between the two groups of the lower chords, and a panel is laid on the upper load-bearing beam to serve as a construction platform.

[0007] It is further configured that: a plurality of vertical poles are arranged along the length direction of the upper chord and the lower chord, and an oblique pole obliquely connecting the upper chord and the lower chord is arranged between two adjacent vertical poles.

[0008] It is further configured that a stabilizing diagonal tie rod is arranged obliquely between the upper chord and the suspension rod.

[0009] It is further configured that: the triangular truss includes two obliquely connected stiffening chords, and the vertical rods extend in the vertical direction to be connected to the stiffening chords.

[0010] It is further arranged that: a stiffening diagonal rod obliquely connected between the lower chord rod and the stiffening chord rod is arranged between two adjacent vertical rods.

[0011] Further configuration: two triangular trusses are also provided corresponding to the two groups of lower chords, a lower load-bearing beam is provided between the bottoms of the two triangular trusses, and the suspension rod is connected to the midpoint of the lower load-bearing beam.

[0012] Further configuration: the top of the truss platform is provided with an adjustable top support for the bottom of the beam for supporting the bottom of the beam upward, the adjustable top support for the bottom of the beam includes a support rod threadedly connected in the vertical rod, and the top of the support rod is used to resist the bottom of the beam.

[0013] Further configuration: the walking truss includes a walking truss cross beam and a walking truss longitudinal beam, the walking truss cross beam extends in the transverse direction of the bridge and its length is greater than the width of the middle isolation zone of the bridge, the walking truss longitudinal beam is respectively provided at both ends of the walking truss cross beam along the length direction, and the walking truss longitudinal beam extends in the longitudinal direction of the bridge, the walking wheels are provided at the bottom of the walking truss longitudinal beam, and each of the walking truss longitudinal beams is connected to at least two walking wheels.

[0014] It is further provided that: the end portion of the suspension rod connected to the walking truss is provided with a fixing piece for fixing to the rotating shaft.

[0015] Compared with the prior art, the solution of this application has the following advantages:

[0016] The mobile construction platform at the bottom of the bridge beam of the present application connects the walking mechanism on the bridge deck and the truss platform at the bottom of the beam through a hanger, thereby forming a construction platform that moves at the bottom of the beam, which can meet the needs of bridge construction under different conditions. The construction platform has a simple structure, is easy to process and manufacture, has a high degree of structural safety, the walking system occupies less space on the bridge deck, has less interference with the construction on the bridge deck, is easy to move and walk, can be used across piers, and has strong turnover and practicality.

[0017] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 This is a schematic elevation diagram of an embodiment of the mobile construction platform for the bottom of a bridge beam of the present application;

[0020] Figure 2 This is a schematic diagram of the truss platform in the mobile construction platform at the bottom of the bridge beam of this application.

[0021] In the figure, 1. walking mechanism; 111. walking truss crossbeam; 112. walking truss longitudinal beam; 12. walking wheel; 13. rotating shaft; 2. truss platform; 21. upper chord; 22. lower chord; 23. vertical pole; 24. diagonal pole; 25. upper load-bearing crossbeam; 26. panel; 27. stiffening chord; 28. stiffening diagonal pole; 29. ​​lower load-bearing crossbeam; 3. suspension rod; 31. fixing piece; 32. stabilizing diagonal brace; 4. adjustable top support for the bottom of the beam. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application.

[0023] Those skilled in the art will appreciate that, unless specifically stated, the "said" and "the" used herein may also include plural forms. It should be further understood that the term "including" used in the specification of the present application refers to the presence of the features, parts and / or components, but does not exclude the implementation of other features, parts, components and / or their combinations supported by the technical field. The term "and / or" used herein refers to at least one of the items defined by the term, for example, "A and / or B" can be implemented as "A", or as "B", or as "A and B".

[0024] In the description of the present application, the directions or positional relationships indicated by words such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the exemplary directions or positional relationships shown in the accompanying drawings. They are for the convenience of describing or simplifying the description of the embodiments of the present application, and do not indicate or imply that the referred device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In the description of this specification, specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. To make the purpose, technical solution and advantages of this application clearer, the implementation mode of this application will be further described in detail below in conjunction with the accompanying drawings.

[0028] This application discloses a mobile construction platform for the bottom of a bridge beam, which is suitable for the construction of a double-span bridge. Figure 1 and Figure 2 It includes a traveling mechanism 1, a truss platform 2 and a suspension rod 3. The traveling mechanism 1 is arranged on the bridge deck, and the truss platform 2 is arranged at the bottom of the beam. The suspension rod 3 passes through the middle isolation belt of the double-span bridge and its two ends are respectively connected to the traveling mechanism 1 and the truss platform 2. Under the connection action of the suspension rod 3, the traveling mechanism 1 walks on the bridge deck to drive the movement of the truss platform 2.

[0029] Specifically, the traveling mechanism 1 includes a traveling truss, traveling wheels 12 and a rotating shaft 13. The length of the traveling truss along the transverse direction of the bridge is greater than the width of the intermediate isolation zone of the double-span bridge, so that the traveling mechanism 1 can cross the bridge deck of the double-span bridge. The traveling wheels 12 are rotatably arranged at the bottom of the traveling truss, and the traveling truss can be moved along the longitudinal direction of the bridge through the traveling wheels 12. The rotating shaft 13 is rotatably arranged on the traveling truss, and the end of the suspension rod 3 connected to the traveling is connected to the rotating shaft 13, thereby realizing a rotatable connection between the suspension rod 3 and the traveling truss.

[0030] The walking truss of this embodiment includes a walking truss cross beam 111 and a walking truss longitudinal beam 112. The walking truss cross beam 111 extends in the transverse direction of the bridge and its length is greater than the width of the middle isolation zone of the double-width bridge. The walking truss longitudinal beam 112 is respectively provided at both ends of the walking truss cross beam 111 in the length direction, and the walking truss longitudinal beam 112 extends in the longitudinal direction of the bridge. The walking wheel 12 is provided at the bottom of the walking truss longitudinal beam 112, and each walking truss longitudinal beam 112 is connected to at least two walking wheels 12, that is, the present application completes the movement of the walking truss in the longitudinal direction of the bridge through two groups of walking wheels 12 on the walking truss longitudinal beams 112 at both ends of the walking truss cross beam 111. In addition, the rotating shaft 13 is provided at the center of the walking truss cross beam 111, so that the tension of the suspension rod 3 on the walking truss is balanced, ensuring the stability of the walking truss during walking.

[0031] The top of the boom 3 is connected to the walking truss through a rotating shaft 13, and the bottom is fixedly connected to the truss platform 2. The truss platform 2 is arranged at the bottom of the beam, and includes an upper chord 21, a lower chord 22 and a vertical rod 23. The vertical rod 23 connects the upper chord 21 and the lower chord 22 in the vertical direction to form a truss plate, and at least two upper chords 21 and lower chords 22 are arranged side by side at the same horizontal height. A plurality of vertical rods 23 are arranged along the length direction of the upper chord 21 and the lower chord 22 to improve the connection strength between the upper chord 21 and the lower chord 22, so that the truss platform 2 can be formed by arranging at least two parallel truss plates. In this embodiment, two groups of upper chords 21 and lower chords 22 are arranged side by side at the same horizontal height, and an upper load-bearing beam 25 is provided between the lower chords 22 of the two groups of truss plates. A plurality of upper load-bearing beams 25 are provided along the length direction of the lower chord 22. At the same time, a panel 26 is laid on the plurality of upper load-bearing beams 25 as a construction platform, and workers can complete the construction of the bottom of the bridge beam through the construction platform.

[0032] Preferably, the present application adopts 2 cm thick bamboo plywood as the panel 26. The bamboo plywood has the advantages of high hardness, bending resistance and compression resistance. Compared with steel formwork, the bamboo plywood is lighter in weight and can reduce the burden on the construction site. Therefore, it can be widely used in horizontal formworks, shear walls, vertical wall panels, bridges, viaducts, dams, tunnel subways and beam pile formworks in house construction.

[0033] Furthermore, an oblique rod 24 obliquely connecting the upper chord 21 and the lower chord 22 is provided between two adjacent vertical rods 23. The oblique rod 24 can twist the direction of action of the horizontal and vertical forces into an oblique direction, thereby increasing the stability of the truss structure and increasing the structural strength of the truss piece.

[0034] The truss platform also includes a triangular truss arranged below the lower chord 22, the triangular truss includes two obliquely connected stiffening chords 27, and the vertical rods 23 can extend in the vertical direction to connect with the stiffening chords 27 to improve the connection strength between the truss piece and the triangular truss. In addition, due to the excellent deformation resistance of the triangle, the structural strength of the truss platform 2 of the present application can be further improved by connecting the triangular truss below the lower truss.

[0035] In addition, the present application also provides a stiffening diagonal rod 28 obliquely connected between the lower chord 22 and the stiffening chord 27 between two adjacent vertical rods 23. The stiffening diagonal rod 28 can further improve the connection strength between the triangular truss and the lower chord 22, and due to the good stability of the triangular truss, the structural stability of the truss platform 2 of the present application can be improved.

[0036] In this embodiment, two triangular trusses are provided corresponding to the two lower chords 22, and a lower load-bearing cross beam 29 is provided between the bottoms of the two triangular trusses, and the suspension rod 3 extends to connect with the midpoint of the lower load-bearing beam, that is, the bottom end of the suspension rod 3 of the present application is connected with the center point of the bottom of the truss platform 2. At the same time, an inclined stabilizing diagonal tie rod 32 is also provided between the upper chord 21 of the truss platform 2 and the suspension rod 3 to improve the connection strength between the truss platform 2 and the suspension rod 3, thereby ensuring the supporting effect of the walking truss on the truss platform 2 through the suspension rod 3.

[0037] The end portion of the top of the boom 3 connected to the traveling truss is provided with a fixing part 31 for fixing to the rotating shaft 13. The fixing part 31 of this embodiment adopts a nut, and the nut is used to realize the locking fixation between the top of the boom 3 and the rotating shaft 13, so that the rotating shaft 13 can be rotated, and the boom 3 is driven by the rotation to achieve the purpose of rotating the truss platform 2 located at the bottom of the bridge, which can facilitate the traveling system to drive the truss platform 2 to walk to the next span section.

[0038] The top of the truss platform 2 is also provided with an adjustable top support 4 for supporting the bottom of the beam upward. The adjustable top support 4 includes a support rod threadedly connected to the vertical rod 23. The top of the support rod passes through the upper chord rod 21 and is against the bottom of the beam. The adjustable top support 4 is tightly pressed against the bottom of the bridge beam to achieve relative fixation between the mobile construction platform at the bottom of the bridge beam of this application and the bridge, thereby ensuring safety and stability of the construction process.

[0039] When constructing the mobile construction platform at the bottom of the bridge beam of this application, the following steps are specifically included:

[0040] First, the mobile construction platform for the bottom of the bridge beam of the present application is manufactured according to the structural dimensions and construction needs of the double-span bridge. The traveling mechanism 1 and the truss platform 2 after processing and manufacturing are respectively transported to the waiting construction position of the bridge, wherein the truss platform 2 is placed directly below the middle isolation zone of the double-span bridge, the length direction of the truss platform 2 is arranged along the bridge direction, and a supporting structure is arranged below the truss platform 2 to ensure the stable placement of the truss platform 2. At the same time, the traveling mechanism 1 is set on the bridge deck, and the length of the traveling mechanism 1 is greater than the width of the middle isolation zone of the double-span bridge.

[0041] Subsequently, a crane or other lifting system is used on the bridge deck of the double-span bridge to lift the truss to the predetermined installation position through the middle isolation zone between the left and right spans, and the suspension rod 3 fixed on the truss platform 2 passes through the traveling truss cross beam 111 of the traveling truss and is fixedly connected to the rotating shaft 13 rotatably mounted on the traveling truss cross beam 111. The crane or other lifting system used to lift the truss platform 2 is released, and the truss platform 2 is suspended on the traveling truss cross beam 111 of the traveling system through the suspension rod 3 to complete the installation of the bridge beam bottom construction platform of the present application.

[0042] Next, the construction workers use a ladder to move from the bridge deck through the middle isolation belt of the bridge to the construction platform of the truss platform 2, and rotate the truss platform 2 90° in the horizontal direction by rotating the rotating shaft 13, so that the length direction of the truss platform 2 is set along the transverse direction of the bridge, and move the truss platform 2 along the direction of the bridge to the designated construction position through the walking mechanism 1. The construction workers can rotate the support rod of the adjustable top support 4 at the bottom of the beam on the construction platform to a position against the bottom of the beam, which can effectively ensure the anti-overturning stability of the construction platform in the event of an overload during the construction process.

[0043] After the construction of the current beam section is completed, when the mobile construction platform at the bottom of the bridge beam needs to move to the bottom of the next span of the bridge, it is necessary to first loosen the adjustable top support 4 at the bottom of the beam that is tightly against the bottom of the beam, and then drive the truss platform 2 to move to the mid-span position or other suitable positions at both ends of the current span through the walking mechanism 1, and then drive the hanger 3 through the rotating shaft 13 to rotate the truss platform 2 90° in the horizontal direction, and the truss platform 2 rotates from the transverse direction of the bridge to the longitudinal direction of the bridge, and then drive the truss to move through the gap between the piers (or cap beams) of the left and right bridges through the walking mechanism 1 on the bridge deck to the bottom of the next span of the bridge, and then repeat the above-mentioned rotation of the truss platform 2 and other steps to construct the bridge.

[0044] In summary, the mobile construction platform at the bottom of the bridge beam of the present application connects the walking mechanism 1 on the bridge deck and the truss platform 2 at the bottom of the beam through a hanger 3, thereby forming a construction platform that moves at the bottom of the beam, which can meet the needs of bridge construction under different conditions. The construction platform has a simple structure, is easy to process and manufacture, has a high degree of structural safety, the walking system occupies less space on the bridge deck, has less interference with the construction on the bridge deck, is easy to move and walk, can be used across piers, and has strong turnover and practicality.

[0045] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A mobile construction platform for bridge beam bottom, suitable for double-span bridges, characterized in that: It includes a walking mechanism, a truss platform and a hanger. The walking mechanism is placed on the bridge deck, and includes a walking truss, walking wheels and a rotating shaft. The length of the walking truss along the transverse direction of the bridge is greater than the width of the middle isolation zone of the bridge. The walking wheels are rotatably arranged at the bottom of the walking truss to enable the walking truss to move along the longitudinal direction of the bridge. The rotating shaft is rotatably arranged on the walking truss. The truss platform is arranged at the bottom of the beam. The hanger passes through the middle isolation zone of the bridge and one end of the hanger is rotatably connected to the walking mechanism through the rotating shaft, and the other end of the hanger is fixedly connected to the truss platform.

2. The bridge beam bottom mobile construction platform according to claim 1, characterized in that: The truss platform includes an upper chord, a lower chord and vertical poles, the vertical poles connect the upper chord and the lower chord in the vertical direction, the upper chord and the lower chord are arranged in two groups side by side in the same horizontal direction, and an upper load-bearing beam is provided between the two groups of the lower chords, and a panel is laid on the upper load-bearing beam to serve as a construction platform.

3. The bridge beam bottom mobile construction platform according to claim 2, characterized in that: A plurality of vertical rods are arranged along the length direction of the upper chord rod and the lower chord rod, and an oblique rod obliquely connecting the upper chord rod and the lower chord rod is arranged between two adjacent vertical rods.

4. The bridge beam bottom mobile construction platform according to claim 2, characterized in that: An inclined stabilizing diagonal tie rod is arranged between the upper chord and the suspension rod.

5. The bridge beam bottom mobile construction platform according to claim 2, characterized in that: The truss platform also includes a triangular truss arranged below the lower chord, the triangular truss includes two obliquely connected stiffening chords, and the vertical rods extend in the vertical direction to be connected to the stiffening chords.

6. The bridge beam bottom mobile construction platform according to claim 5, characterized in that: A stiffening diagonal rod obliquely connected between the lower chord rod and the stiffening chord rod is arranged between two adjacent vertical rods.

7. The bridge beam bottom mobile construction platform according to claim 5, characterized in that: The triangular trusses are also provided with two corresponding to the two groups of lower chords, and a lower load-bearing beam is provided between the bottoms of the two triangular trusses, and the suspension rod is connected to the midpoint of the lower load-bearing beam.

8. The bridge beam bottom mobile construction platform according to claim 2, characterized in that: The top of the truss platform is provided with an adjustable top support for the bottom of the beam to support the bottom of the beam upward. The adjustable top support for the bottom of the beam includes a support rod threadedly connected to the vertical rod, and the top of the support rod is used to abut against the bottom of the beam.

9. The bridge beam bottom mobile construction platform according to claim 1, characterized in that: The walking truss includes a walking truss cross beam and a walking truss longitudinal beam. The walking truss cross beam extends in the transverse direction of the bridge and its length is greater than the width of the middle isolation zone of the bridge. The walking truss longitudinal beam is respectively provided at both ends of the walking truss cross beam in the length direction, and the walking truss longitudinal beam extends in the longitudinal direction of the bridge. The walking wheels are provided at the bottom of the walking truss longitudinal beam, and each of the walking truss longitudinal beams is connected to at least two walking wheels.

10. The bridge beam bottom mobile construction platform according to claim 9, characterized in that: The end of the suspension rod connected to the traveling truss is provided with a fixing piece for fixing to the rotating shaft.

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