Movable aerial operation platform for arch bridge construction

Abstract

The utility model provides a movable aerial work platform for arch bridge construction, which is fixed on an arch rib and comprises a track system, a movable aerial work platform, a movable aerial work platform and a movable aerial work platform, wherein the track system is provided with a track which is arranged on the arch rib and is arranged along the length direction of the arch rib; the sliding system is provided with a connecting rod arranged in the length direction of the transverse arch rib and a pulley assembly connected to the connecting rod, and the connecting rod is slidably connected to the track through the pulley assembly; the safety cage is provided with an operation platform and a vertical rod for connecting the operation platform to the connecting rod, and the safety cage moves in the length direction of the arch rib through the rail system and the sliding system. According to the movable aerial operation platform for arch bridge construction, the operation flexibility can be greatly improved, and time and materials needed by repeated erection of a traditional operation platform are saved.

Description

Technical Field

[0001] The utility model belongs to the field of safety protection for the installation of arch ribs of cross-river steel structure bridges, and particularly relates to a movable aerial work platform for the construction of arch bridges. Background Art

[0002] The hoisting of arch ribs is an important process in the construction of steel truss arch bridges. Generally, they are prefabricated in factories and then transported to the construction site for installation and fixation at the designed positions. Among them, steel arch ribs are a common building structure material and are widely used in the construction of arch bridges. In the traditional welding and installation process of steel arch ribs, a fixed work platform is generally adopted, and a crawler crane is used in cooperation with an aerial work platform vehicle to transport operators to the aerial work platform at high altitude for welding operations. However, on this work platform, operators can only work at specific positions. After completing the existing welding operations, it is necessary to repeatedly set up the work platform to carry out the next process, which is not flexible enough, time-consuming, and causes large material losses. Summary of the Utility Model

[0003] In order to solve the problems that the fixed work platform for the welding and installation operation of steel arch ribs of arch bridges in the prior art is not flexible enough, time-consuming in the building process, and causes large material losses, the utility model provides a movable aerial work platform during the installation process of arch ribs of arch bridges under water operation conditions.

[0004] The technical solution adopted by the utility model is: a movable aerial work platform fixed on the arch rib, comprising:

[0005] A track system having tracks arranged on the arch rib and arranged along the longitudinal direction of the arch rib;

[0006] A sliding system having connecting rods arranged along the transverse direction of the arch rib and pulley assemblies connected to the connecting rods, and the connecting rods are slidably connected to the tracks through the pulley assemblies;

[0007] A safety cage having an operation platform and vertical rods connecting the operation platform to the bottom of the connecting rods, and the safety cage moves along the longitudinal direction of the arch rib through the track system and the sliding system.

[0008] To solve the problem that the operation of the fixed working platform in the prior art is not flexible enough, the present invention provides a movable aerial working platform. Specifically, one or more tracks extending along the longitudinal direction of the arch rib are arranged on the arch rib of the arch bridge, and a safety cage for personnel to stand on is connected to the connecting rod of the sliding system. The pulley assembly that can relatively slide on the track at the bottom of the connecting rod drives the safety cage to move along the longitudinal direction of the arch rib. Thus, the operator can, according to the requirements of different welding working positions, slide the safety cage to the required working position through the track system and the sliding system for operation, and then adjust the position of the safety cage after the operation to carry out the next process. It can be understood that the present utility model can also, according to the operation needs, arrange multiple sets of sliding systems on a set of track systems, and multiple sets of safety cages can also be arranged on each set of sliding systems, so that multiple working positions can be arranged in both the longitudinal direction of the arch rib and the transverse direction of the arch rib, solving the problem of the number of the conventional fixed working platforms. In summary, the movable aerial working platform provided by the present utility model greatly improves the flexibility of the operation and saves the time and materials required for repeatedly erecting the traditional working platform.

[0009] Preferably, the pulley assembly includes:

[0010] A pulley, connected to the connecting rod, for driving the connecting rod to move along the longitudinal direction of the corresponding track along the arch rib;

[0011] A pulley central axis, passing through the center of the pulley, for limiting the pulley in the track;

[0012] A pulley brake, connected to the pulley, for preventing the pulley from moving on the corresponding track.

[0013] At the bottom of the connecting rod, one or more sets of pulley assemblies can be correspondingly arranged according to the number of tracks. Specifically, the relative sliding of the pulley on the corresponding track drives the connecting rod to move along the longitudinal direction of the corresponding track along the arch rib, so that the safety cage also moves in the longitudinal direction of the arch rib. To ensure the safety of the operator and prevent the safety cage from sliding during the operation, the present utility model also provides a pulley brake in the pulley assembly. When the safety cage moves to the working position, the pulley brake is activated, for example, by the way of a limit bayonet to lock the pulley, preventing the pulley from shifting in the longitudinal direction of the arch rib and fixing the safety cage at the required position. Similarly, to ensure the safety of the operator and prevent the possibility of the pulley derailing, the present utility model also provides a pulley central axis in the pulley assembly to stably limit the pulley in the track through the pulley central axis.

[0014] Preferably, the two ends of the track are provided with limit blocks for preventing the pulley from disengaging from the end of the track. To ensure the safety of operators, when the safety cage approaches the two ends of the track, in order to prevent the pulley from disengaging from the end of the track, the present utility model also arranges limit blocks, such as stop bars or baffles, at the two ends of the track.

[0015] Preferably, the connection between the pulley assembly and the connecting rod is detachable. To adapt to different working conditions, the connection between the pulley assembly and the connecting rod is preferably detachable. According to actual working requirements, such as the width of the arch rib, the distance between multiple tracks, etc., the position of the pulley relative to the connecting rod can be adjusted, which facilitates the safety and stability of the sliding system and the safety cage during the moving process. It not only improves the flexibility of the operation but also saves the time and materials required for the disassembly and assembly of fixed connections, such as welding.

[0016] Preferably, the operation platform is connected to the connecting rod through multiple vertical rods, and multiple horizontally arranged cross bars are used to connect adjacent vertical rods. Multiple cross bars are evenly arranged between the vertical rods, which can not only serve as a platform fence to enclose a safety cage for safety protection but also be used as a ladder, well solving the problem of inconvenient access for operators on traditional platforms, improving the efficiency of operators accessing the platform, and presenting an overall beautiful and generous effect.

[0017] Preferably, the connection between the vertical rod and the connecting rod is detachable. More preferably, multiple groups of through holes are arranged on the connecting rod, and the vertical rod is bolted to the connecting rod through the corresponding through holes. To adapt to different working conditions, the connection between the vertical rod and the connecting rod is preferably detachable. According to actual working requirements, such as the width of the arch rib, the width of the safety cage, etc., the position of the safety cage relative to the connecting rod can be adjusted by the vertical rod, so that the safety cage has a suitable working position relative to the arch rib, improving the flexibility of the operation and also saving the time and materials required for the disassembly and assembly of fixed connections, such as welding.

[0018] Preferably, the connection between the vertical rod and the operation platform is detachable. To facilitate the adjustment of the working position of the operator in the height direction, according to actual working requirements, the position of the operation platform relative to the vertical rod can be adjusted, so that the operator can work on an operation platform with a suitable height.

[0019] Advantages of the present utility model: The present utility model provides a movable aerial working platform, which significantly improves the flexibility and working efficiency of the welding and installation operation of the steel arch rib of the arch bridge. By arranging a track system and a sliding system on the arch rib, the operator can quickly adjust the position of the safety cage according to actual needs, avoiding the cumbersome construction process of the traditional fixed working platform, thereby saving time and materials. In addition, the design of the pulley brake, pulley central axis and upper limit block on the track in the pulley assembly ensures the stability of the safety cage during the operation, further guaranteeing the safety of the operator. The detachable connection design between the various components of the working platform enables the platform to adapt to different working conditions, facilitating adjustment and enhancing the flexibility and safety of the operation. Overall, the present utility model not only improves the working efficiency but also optimizes the working environment, providing a more convenient and safe solution for the construction of the arch bridge. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the present utility model; wherein, 101 - track, 201 - connecting rod, 2011 - first through hole, 202 - pulley, 2021 - connecting piece, 2022 - fastening piece, 301 - operating platform, 302 - vertical rod, 3021 - second through hole, 303 - cross bar. Detailed Embodiment

[0021] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0022] This embodiment provides a movable aerial working platform, which is fixed on the arch rib and includes a track system, a sliding system and a safety cage. The track system has one or more tracks 101 arranged on the arch rib and along the longitudinal direction of the arch rib. The sliding system has one or more connecting rods 201 arranged along the longitudinal direction of the cross arch rib. A pulley assembly is further provided at the bottom of the connecting rod 201. The connecting rod 201 is slidably connected to the track 101 through the pulley assembly. The safety cage has an operating platform 301 and vertical rods 302 connecting the operating platform 301 to the connecting rod 201. The safety cage moves along the longitudinal direction of the arch rib through the track system and the sliding system.

[0023] In Figure 1In the illustrated embodiment, two tracks 101 extending along the entire length of the arch rib are arranged on the arch rib of the arch bridge. Above the tracks 101, two connecting rods 201 arranged along the entire length of the transverse arch rib are provided. The bottom of each connecting rod 201 is connected to two sets of pulley assemblies that match the number of tracks 101. Thus, each connecting rod 201 can move along the direction of the tracks 101 through the pulley assemblies.

[0024] It can be understood that the present utility model does not limit the number of the tracks 101 or the connecting rods 201. Appropriate numbers of parallel tracks 101 can be arranged on the arch rib according to the actual situation, and appropriate numbers of connecting rods 201 and pulley assemblies that match the number of tracks 101 can be arranged according to the actual load of the safety cage.

[0025] Furthermore, in Figure 1 In the illustrated embodiment, four vertical rods 302 are respectively connected to the four corners of the square operation platform 301 for personnel to stand on, and a plurality of cross rods 303 parallel to the plane of the operation platform 301 are evenly arranged between adjacent vertical rods 302. In this way, a safety cage is enclosed. Here, a plurality of cross rods 303 are evenly arranged between the vertical rods 302, which can not only be used as a platform railing to enclose a safety cage for safety protection, but also be used as a ladder, which well solves the problem of inconvenient access for traditional platform operators, improves the efficiency of operators getting on and off the platform, and has an overall beautiful and generous effect. In this embodiment, two identical safety cages are respectively connected to the two ends of the above two parallel connecting rods 201 through their four vertical rods 302. Thus, through the four sets of pulley assemblies at the bottom of the two connecting rods 201, the safety cages on both sides of the arch rib are simultaneously driven to move along the entire length direction of the arch rib. Thus, the operator can, according to the requirements of different welding operation positions, slide the safety cage to the required operation position through the track system and the sliding system and perform operations on both sides of the arch rib. After the operation is completed, the position of the safety cage is adjusted to carry out the next process.

[0026] In a specific embodiment, according to the operation needs, multiple sets of sliding systems can be arranged on multiple tracks 101 of a set of track systems, and multiple sets of safety cages can also be arranged on each set of sliding systems, so that multiple operation positions can be arranged in both the longitudinal direction of the arch rib and the transverse direction of the arch rib, solving the problem of the number of conventional fixed operation platforms. Thus, this movable aerial operation platform can greatly improve the operation flexibility and save the time and materials required for repeatedly erecting conventional operation platforms.

[0027] In a specific embodiment, the pulley assembly includes a pulley 202, a pulley brake, and a pulley central shaft. The pulley 202 is connected to the connecting rod 201 and is used to drive the connecting rod 201 to move along the longitudinal direction of the arch rib on the corresponding track 101. At the bottom of the connecting rod 201, one or more groups of pulley assemblies can be correspondingly arranged according to the number of tracks 101. Specifically, the connecting rod 201 is driven to move along the longitudinal direction of the arch rib on the corresponding track 101 by the relative sliding of the pulley 202 on the corresponding track 101, so that the safety cage also moves in the longitudinal direction of the arch rib. To ensure the safety of the operators and prevent the safety cage from sliding during operation, a pulley brake connected to the pulley is also provided in the pulley assembly in this embodiment, which is used to prevent the pulley from moving on the corresponding track 101. When the safety cage moves to the working position, the pulley brake is enabled, and the pulley 202 can be locked by means of a limit bayonet to prevent the pulley 202 from shifting in the longitudinal direction of the arch rib and fix the safety cage at the required position. Similarly, to ensure the safety of the operators and prevent the possibility of the pulley 202 derailing, a pulley central shaft is also provided in the pulley assembly in this embodiment, which is used to limit the pulley 202 in the track 101, and the pulley 202 is stably limited in the track 101 through the pulley central shaft.

[0028] In a specific embodiment, both ends of the track 101 are provided with limit blocks, which are used to prevent the pulley 202 from slipping out of the end of the track 101. To ensure the safety of the operators, when the safety cage approaches both ends of the track 101, limit blocks, such as stop bars or baffles, are also arranged at both ends of the track 101 to prevent the pulley 202 from slipping out of the end of the track 101.

[0029] In a specific embodiment, the connection between the pulley assembly and the connecting rod 201 is detachable. To adapt to different working conditions, the connection between the pulley assembly and the connecting rod 201 is preferably detachable. As Figure 1 shown in the illustrated embodiment, the roller assembly is connected to the connecting rod 201 through a connector 2021, and then the connection is tightened through a fastener 2022 to achieve the detachable connection between the pulley assembly and the connecting rod 201. Optionally, the pulley assembly and the connecting rod 201 can also be connected by bolts or snap connections. In this way, the operators can adjust the position of the pulley 202 relative to the connecting rod 201 according to actual operation requirements, such as the width of the arch rib, the distance between multiple tracks 101, etc., which facilitates the safety and stability of the sliding system and the safety cage during the moving process, not only improving the flexibility of the operation, but also saving the time and materials required for the disassembly and assembly of fixed connections, such as welding.

[0030] In a specific embodiment, the operating platform 301 is connected to the connecting rod 201 through multiple vertical rods 302. The adjacent vertical rods 302 are connected through multiple uniformly arranged cross rods 303, and the connection between the vertical rod 302 and the connecting rod 201 is detachable. In Figure 1 In the shown embodiment, multiple groups of first through holes 2011 are arranged on the connecting rod 201, and the vertical rod 302 is bolted to the connecting rod 201 through the corresponding first through holes 2011. Thus, the operator can adjust the position of the safety cage relative to the connecting rod 201 through the vertical rod 302 according to actual operation requirements, such as factors like the width of the arch rib and the width of the safety cage, so that the safety cage has a suitable working position relative to the arch rib, improving the flexibility of the operation and also saving the time and materials required for the disassembly and assembly of fixed connections, such as welding.

[0031] In a specific embodiment, the connection between the vertical rod 302 and the operating platform 301 is detachable. In Figure 1 In the shown embodiment, multiple groups of second through holes 3021 are evenly formed at corresponding positions on the four vertical rods 302, which can be used not only for bolt connection with the cross rod 303 but also for bolt connection with the operating platform 301. Therefore, the operator can fix the operating platform to a suitable position on the vertical rod 302 according to actual operation requirements, so that the operator can work on the operating platform 301 at a suitable height.

[0032] The above-described embodiments are merely descriptions of the preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present invention shall fall within the protection scope of the present invention.

Claims

1. A movable aerial work platform for arch bridge construction, which is fixed to the arch rib, and is characterized in that, Including: A track system having tracks (101) arranged on the arch rib and extending along the longitudinal direction of the arch rib; A sliding system having connecting rods (201) arranged along the longitudinal direction of the transverse arch rib and pulley assemblies connected to the bottoms of the connecting rods (201), wherein the connecting rods (201) are slidably connected to the tracks (101) through the pulley assemblies; A safety cage having an operating platform (301) and vertical rods (302) connecting the operating platform (301) to the connecting rods (201), and the safety cage moves along the longitudinal direction of the arch rib through the track system and the sliding system.

2. The movable aerial work platform for arch bridge construction according to claim 1, wherein The pulley assembly includes: Pulleys (202) connected to the connecting rods (201) for driving the connecting rods (201) to move along the longitudinal direction of the corresponding tracks (101); Pulley axles passing through the centers of the pulleys (202) for limiting the pulleys (202) in the tracks (101); Pulley brakes connected to the pulleys (202) for preventing the pulleys (202) from moving on the corresponding tracks (101).

3. The movable aerial work platform for arch bridge construction according to claim 2, characterized in that Both ends of the track (101) are provided with limit blocks for preventing the pulleys (202) from disengaging from the ends of the tracks (101).

4. The movable aerial work platform for arch bridge construction according to claim 1, characterized in that The connection between the pulley assembly and the connecting rod (201) is detachable.

5. The movable aerial work platform for arch bridge construction according to claim 1, characterized in that The operating platform (301) is connected to the connecting rod (201) through a plurality of vertical rods (302), and adjacent vertical rods (302) are connected through a plurality of uniformly arranged cross rods (303).

6. The movable aerial work platform for arch bridge construction according to claim 1, characterized in that The connection between the vertical rod (302) and the connecting rod (201) is detachable.

7. The movable aerial work platform for arch bridge construction according to claim 6, characterized in that A plurality of groups of first through holes (2011) are arranged on the connecting rod (201), and the vertical rod (302) is bolted to the connecting rod (201) through the corresponding first through holes (2011).

8. The movable aerial work platform for arch bridge construction according to claim 1, characterized in that The connection between the vertical rod (302) and the operating platform (301) is detachable.

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