A temporary construction platform and a method for construction under a beam

Abstract

The beam-under running temporary construction platform comprises a first platform end assembly, a second platform end assembly and a platform middle connecting assembly; the first platform end assembly and the second platform end assembly each comprise a top frame, a vertical frame and a bottom frame, the top frame is installed at the upper end of the vertical frame, and the bottom frame is installed at the lower end of the vertical frame; the side of the top frame facing the beam is hingedly connected with a running support, and the end of the running support is provided with a running wheel; the bottom frame and the vertical frame are each two groups, the bottom frames are arranged in parallel with each other and are connected through frame connecting rods; the vertical frames are arranged in parallel with each other and are connected through frame connecting rods; the top frame is four groups, the top frames are arranged in parallel with each other and are connected through frame connecting rods; further comprising a horizontal limiting device, the horizontal limiting device is connected with the vertical frame perpendicularly, and the end of the horizontal limiting device close to the beam is provided with a limiting wheel.

Description

Technical Field

[0001] This invention belongs to the field of construction technology under beams, and specifically relates to a temporary construction platform for traveling under beams and a construction method for construction under beams. Background Technology

[0002] Temporary construction platforms under bridge beams are a common auxiliary construction facility used in bridge construction and maintenance. They are mainly used for personnel passage, equipment placement, and material transportation under the bridge beams. Their basic function is to provide a relatively stable and safe working surface under the beams, while ensuring that construction personnel can move continuously along the longitudinal direction of the bridge under the beams. Due to the large span of the beams, their high installation position, and the complex construction environment, the temporary construction platform needs to consider multiple factors in its structural design and construction methods, including load-bearing capacity, ease of assembly, and construction safety.

[0003] Existing designs for the movement of construction platforms under beams typically employ rollers, tracks, or guide supports to achieve longitudinal movement along the beam. However, existing platforms often struggle to avoid pipes, cable conduits, or other construction obstacles on the beam's top surface during movement, hindering platform movement and requiring manual disassembly or rerouting, severely impacting construction progress. Furthermore, existing platforms lack flexibility in both overall and modular construction. Overall assembly presents significant challenges for on-site hoisting, while modular assembly requires numerous connectors, complicating assembly and reducing stability. In addition, traditional construction platforms under beams generally rely on welding for structural connections. While welding ensures strength, it leads to substantial secondary construction work, extended construction periods, and makes welded joints difficult to disassemble and reuse, hindering rapid construction and material recycling. Summary of the Invention

[0004] The purpose of this invention is to provide a temporary construction platform for traveling under beams and a construction method for traveling under beams, so as to solve the problem that existing platforms often cannot smoothly avoid pipes, cable guides or construction obstacles on the top surface of beams during travel, resulting in obstructed platform movement.

[0005] The technical solution of this invention to solve the above-mentioned technical problems is as follows: a temporary construction platform for traveling under a beam and a construction method for traveling under a beam, wherein the beam includes a middle connecting part and two side parts located at both ends of the middle connecting part; the construction platform includes: a first platform end assembly, a second platform end assembly, and a platform middle connecting assembly, wherein the platform middle connecting assembly is detachably connected between the first platform end assembly and the second platform end assembly; both the first platform end assembly and the second platform end assembly include a top frame, a vertical frame, and a bottom frame, wherein the top frame is installed at the upper end of the vertical frame, and the bottom frame is installed at the lower end of the vertical frame, wherein the free ends of the top frame and the bottom frame both face the beam; a traveling bracket is hinged to the side of the top frame facing the beam, wherein the traveling bracket... The support system includes a first support group and a second support group, with running wheels installed at the ends of the first and second support groups respectively. The first and second support groups are spaced apart in a direction perpendicular to the long side of the beam. The running wheels are in contact with the upper surface of the beam and can roll along the long side of the beam. There are two sets of bottom frames and two sets of vertical frames. The bottom frames are arranged parallel to each other and connected by frame connecting rods. The vertical frames are arranged parallel to each other and connected by frame connecting rods. There are four sets of top frames. The top frames are arranged parallel to each other and connected by frame connecting rods. The system also includes a horizontal limiting device, which is perpendicularly connected to the vertical frames. A limiting wheel is installed at the end of the horizontal limiting device near the beam.

[0006] The temporary construction platform under the beam described above further includes, in addition to the first platform end assembly and the second platform end assembly, a tie rod, the upper end of which is connected to the vertical frame and the lower end of which is connected to the bottom frame.

[0007] The temporary construction platform under the beam described above further comprises the following: the first support group consists of a first roller support rod and a second roller support rod; the second support group consists of a third roller support rod and a fourth roller support rod; the first support group is located closer to the beam than the second support group; the upper ends of the first roller support rod and the second roller support rod are hinged to the top frame, and the first roller support rod and the second roller support rod can rotate around the hinge axis.

[0008] The temporary construction platform under the beam described above is further provided in this invention, wherein the top frame, vertical frame and bottom frame are all made by connecting Bailey bridges, the side of the vertical frame facing the beam is provided with a Bailey bridge connector, the end of the top frame connected to the vertical frame is provided with a Bailey bridge connector, and the top frame and the vertical frame are connected by Bailey bridge connectors.

[0009] The temporary construction platform for walking under beams as described above further includes a first upper step installed on the upper part of the bottom frame and a first lower step installed on the lower part of the bottom frame; first guardrails are vertically fixed on both sides of the upper step.

[0010] The temporary construction platform under the beam described above further includes two sets of parallel central connection frame components. The upper parts of the two sets of central connection frame components are connected by upper connectors, and the lower parts of the two sets of central connection frame components are connected by bottom connectors. Horizontal scissor braces are also connected to the lower parts of the two sets of central connection frame components. A second upper step is installed on the upper part of the central connection frame component, and a second lower step is installed on the lower part of the central connection frame component.

[0011] The temporary construction platform under the beam described above is further provided by the present invention, wherein second guardrails are installed on both sides of the second upper step; and personnel passage holes are provided on the second upper step.

[0012] The temporary construction platform under the beam described above further includes a horizontal limiting device comprising a connecting channel steel, a base plate, a roller bracket, and a limiting wheel connected in sequence, wherein the connecting channel steel is fixedly connected to the vertical frame.

[0013] The temporary construction platform under the beam described above further includes a prestressed tensioning device, which includes a tensioning wire rope with a tensioning anchor end at one end. The tensioning wire rope is supported on the first platform end assembly, the second platform end assembly, and the platform middle connecting assembly via pulleys and pulley supports.

[0014] The present invention also provides a method for construction under a beam, comprising the following steps: Step 1, placing a temporary construction platform under the beam at the corresponding position of the beam, wherein the end component of the first platform corresponds to one side of the beam, the end component of the second platform corresponds to the other side of the beam, and the connecting component of the middle part of the platform corresponds to the middle connecting part of the beam; Step 2, using a traveling bracket and traveling wheels to travel on the upper surface of the beam, when the traveling wheels encounter an obstacle on the beam, the top frame closest to the obstacle among the four sets of top frames is operated as follows: the traveling bracket is rotated around the hinge axis to make the traveling wheels avoid the obstacle; then the remaining traveling wheels in contact with the upper surface of the beam travel along the long side of the beam until the rotating traveling bracket passes the obstacle; the operation of Step 2 is repeated until all the traveling wheels corresponding to the four sets of top frames have passed the obstacle.

[0015] The beneficial effects of this invention are: 1. The platform moves smoothly and can flexibly avoid obstacles; by setting a hinged traveling support at the top frame, the traveling wheels can rotate around the hinge axis to lift and avoid pipes, cable conduits or other obstacles on the top surface of the beam, avoiding the need for manual disassembly or detour of traditional platforms, and greatly improving the continuity and efficiency of construction.

[0016] 2. The overall structure is stable and has high load-bearing capacity. The top frame, vertical frame, and bottom frame all adopt modular splicing of Bailey panels, reinforced with diagonal tie rods. This ensures sufficient load-bearing strength and bending resistance while improving the overall structural stability, meeting the safety requirements of bridge construction. Furthermore, the assembly and disassembly of each component are achieved through Bailey panel connectors and frame connecting rods, eliminating the need for extensive welding processes. This allows for rapid construction layout and dismantling, and standard components can be recycled, reducing construction costs and material waste. Attached Figure Description

[0017] The advantages of the present invention, both above and / or other aspects, will become clearer and more readily understood through the following detailed description taken in conjunction with the accompanying drawings, which are merely illustrative and do not limit the invention, wherein: Figure 1 This is a schematic diagram of a temporary construction platform for traveling under beams according to an embodiment of the present invention; Figure 2 for Figure 1 AA cross-section view; Figure 3 for Figure 1 BB cross-section; Figure 4 This is a schematic diagram of a first platform end component according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the top frame according to an embodiment of the present invention; Figure 6 This is a schematic diagram of a vertical frame according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the bottom frame according to an embodiment of the present invention; Figure 8 This is a schematic diagram of a platform mid-section connection component according to an embodiment of the present invention; Figure 9 This is a partially enlarged schematic diagram of the platform mid-section connection component according to an embodiment of the present invention; Figure 10 This is a schematic diagram of a traveling mechanism crossing an obstacle according to an embodiment of the present invention; Figure 11 This is a schematic diagram of the usage state of a temporary construction platform under a beam according to an embodiment of the present invention; Figure 12 This is a schematic diagram of a horizontal limiting device according to a first embodiment of the present invention; Figure 13 This is a schematic diagram of a horizontal limiting device according to a second embodiment of the present invention; Figure 14 This is a schematic diagram of a prestressed tensioning device according to an embodiment of the present invention; Figure 15 This is a schematic diagram of the installation method of an electric winch according to an embodiment of the present invention.

[0018] The attached diagram lists the components represented by each number as follows: 100. First platform end assembly; 101. Top frame; 102. Vertical frame; 103. Bottom frame; 104. Traveling support; 1041. First roller support rod; 1042. Second roller support rod; 1043. Third roller support rod; 1044. Fourth roller support rod; 1045. Ear plate; 1046. Hinge shaft; 105. Traveling wheel; 106. Horizontal limiting device; 1061. Connecting channel steel; 1062. Base plate; 1063. Roller bracket; 1064. Limiting wheel; 1065. Outer sleeve; 1066. Core tube; 1067. Locking bolt; 107. First guardrail; 108. Bailey panel connector; 109. Diagonal tie rod. 110. First upper step; 111. First lower step; 112. Frame connecting rod; 200. Platform middle connecting assembly; 201. Middle connecting assembly frame; 202. Second lower step; 203. Second upper step; 204. Second guardrail; 205. Upper connector; 206. Bottom connector; 207. Horizontal scissor brace; 300. Second platform end assembly; 400. Personnel passage hole; 500. Beam; 600. Obstacle; 700. Prestressed tensioning device; 701. Tensioning wire rope; 702. Pulley; 703. Pulley bracket; 704. Tensioning anchor end; 800. Electric winch; 801. Wire rope anchor point. Detailed Implementation

[0019] In the following description, embodiments of the temporary construction platform under beams and the construction method under beams of the present invention will be described with reference to the accompanying drawings.

[0020] The embodiments described herein are specific implementations of the present invention, used to illustrate the concept of the invention, and are illustrative and exemplary, and should not be construed as limiting the implementation or scope of the invention. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.

[0021] The accompanying drawings in this specification are schematic diagrams to aid in illustrating the concept of the invention, and schematically show the shapes of the various parts and their interrelationships. Please note that, in order to clearly demonstrate the structure of the components in the embodiments of the invention, the drawings are not drawn to the same scale. The same reference numerals are used to indicate the same parts.

[0022] Combination Figures 1 to 11 This invention describes a temporary construction platform for traveling under a beam, according to one embodiment. During construction, the platform travels along the long side of a beam 500. The beam 500 includes a central connecting portion and two side portions located at both ends of the central connecting portion. The construction platform includes a first platform end assembly 100, a second platform end assembly 300, and a platform middle connecting assembly 200. The platform middle connecting assembly 200 is detachably connected between the first platform end assembly 100 and the second platform end assembly 300. The detachable connection is preferably, but not limited to, bolted connection, pin connection, plug-in connection, or a combination thereof, to facilitate rapid assembly, disassembly, and reuse of the platform. Both the first platform end assembly 100 and the second platform end assembly 300 include a top frame 101, a vertical frame 102, and a bottom frame 103. The top frame 101 is installed at the upper end of the vertical frame 102, and the bottom frame 103 is installed at the lower end of the vertical frame 102. The free ends of both the top frame 101 and the bottom frame 103 face the beam 500; these free ends are the other ends of the opposite connecting ends. The top frame, vertical frame, and bottom frame together form a stable spatial load-bearing structure to support construction personnel, self-weight, and additional loads generated during construction. The top frame 101 is hinged to a traveling support on the side facing the beam 500. The traveling support 104 includes a first support group and a second support group, with traveling wheels 105 installed at the ends of both groups. The first and second support groups are spaced apart in a direction perpendicular to the long side of the beam 500. The traveling wheels 105 contact the upper surface of the beam 500 and can roll along the long side of the beam 500. Preferably, the traveling wheels are made of steel or rubber-coated material with a wear-resistant layer. The wheel rim structure can be selected from grooved or guide wheel types depending on the beam top surface structure to improve traveling stability. Figure 15As shown, in a preferred embodiment, an electric winch 800 is fixed on the top frame 101, and a wire rope anchor point 801 is fixed at a corresponding position on the top of the beam. The wire rope anchor point is typically located at the front of the construction platform in the direction of movement. The end of the wire rope of the electric winch is connected to the wire rope anchor point. By synchronously operating the electric winches installed on the first platform end assembly and the second platform end assembly, the temporary construction platform under the beam can be moved on the beam. In practical applications, the electric winch can be synchronously started and stopped and its speed matched through an electronic control system to avoid the platform from shifting or twisting during movement, thereby improving overall operational safety. The bottom frame 103 and the vertical frame 102 are each in two sets. The bottom frames 103 are arranged parallel to each other and connected by frame connecting rods; the vertical frames 102 are arranged parallel to each other and connected by frame connecting rods; the top frame 101 consists of four sets, which are arranged parallel to each other and connected by frame connecting rods 112. Through the parallel arrangement and connection of the above multiple sets of frames, a stable lateral support system can be formed in the width direction of the platform, thereby effectively resisting the lateral forces generated during construction. A horizontal limiting device 106 is also included. The horizontal limiting device 106 is vertically connected to the vertical frame 102, and a limiting wheel 1064 is installed at the end of the horizontal limiting device 106 near the beam 500. The limiting wheel cooperates with the side of the beam to limit the displacement of the construction platform in the lateral direction and prevent the platform from swaying laterally during travel or construction.

[0023] In a preferred embodiment of a temporary construction platform for traveling under beams, the first platform end assembly 100 and the second platform end assembly 300 further include diagonal braces 109. The upper end of the diagonal brace 109 is connected to the vertical frame 102, and the lower end of the diagonal brace 109 is connected to the bottom frame 103. The diagonal brace effectively improves the overall rigidity between the vertical frame and the bottom frame, enhancing the platform's resistance to deformation under load.

[0024] In a preferred embodiment of a temporary construction platform for traveling under a beam, the first support group consists of a first roller support rod 1041 and a second roller support rod 1042; the second support group consists of a third roller support rod 1043 and a fourth roller support rod 1044; the first support group is located closer to the beam 500 than the second support group; the upper ends of the first roller support rod 1041 and the second roller support rod 1042 are hinged to the top frame 101, and the first roller support rod 1041 and the second roller support rod 1042 can rotate around the hinge axis 1046. By setting two sets of traveling support groups in different positions, the platform can maintain at least one set of traveling wheels in contact with the top surface of the beam even when encountering obstacles, thereby ensuring the continuity of the platform's overall movement. Figure 5This is a schematic diagram of the top frame according to an embodiment of the present invention, in which some components are shown in an exploded state; one end of the second roller support rod 1042 is provided with an ear plate 1045, and the lower end of the first roller support rod 1041 is connected by inserting it into the ear plate through a hinge shaft. When it is necessary to select the folding first bracket group, the hinge shaft in the ear plate 1045 needs to be removed first, and then the first roller support rod 1041 and the second roller support rod 1042 are rotated respectively, so that the first roller support rod 1041 and the second roller support rod 1042 rotate around the hinge shaft between their upper ends and the top frame 101.

[0025] In a preferred embodiment of a temporary construction platform for traveling under beams, the top frame 101, the vertical frame 102, and the bottom frame 103 are all made by connecting Bailey panels. Figure 6 This is a schematic diagram of a vertical frame according to an embodiment of the present invention, in which some components are shown in an exploded state; the side of the vertical frame 102 facing the beam 500 is provided with a Bailey plate connector 108, and the end of the top frame 101 connected to the vertical frame 102 is provided with a Bailey plate connector 108, and the top frame 101 and the vertical frame 102 are connected by the Bailey plate connector 108.

[0026] Figure 7 This is a schematic diagram of the bottom frame of one embodiment of the present invention, in which some components are shown in an exploded state. In a preferred embodiment of a temporary construction platform for walking under beams, a first upper step 110 is installed on the upper part of the bottom frame 103, and a first lower step 111 is installed on the lower part of the bottom frame 103. First guardrails 107 are vertically fixed on both sides of the upper step. The first upper step and the first lower step facilitate construction workers to stand on steps of different heights when operating at corresponding heights; the first guardrails on both sides of the first upper step provide additional safety protection for construction workers.

[0027] In a preferred embodiment of a temporary construction platform for walking under beams, the platform's central connecting component 200 includes two sets of parallel central connecting component frames 201. The upper parts of the two sets of central connecting component frames 201 are connected by upper connecting members 205, and the lower parts of the two sets of central connecting component frames 201 are connected by bottom connecting members 206. Horizontal scissor braces 207 are also connected to the lower parts of the two sets of central connecting component frames 201. A second upper step 203 is installed on the upper part of the central connecting component frame 201, and a second lower step 202 is installed on the lower part of the central connecting component frame 201. In a preferred embodiment of a temporary construction platform for walking under beams, second guardrails 204 are installed on both sides of the second upper step 203. Personnel passage holes 400 are provided on the second upper step 203. The provision of the second upper step and the second lower step facilitates workers standing on steps of different heights when operating at corresponding heights. The second guardrails on both sides of the second upper step provide additional safety protection for workers. The passageway allows construction workers to easily switch between the second upper step and the second lower step for working height.

[0028] In a preferred embodiment of a temporary construction platform for traveling under beams, such as Figure 12 As shown, the horizontal limiting device 106 includes a connecting channel steel 1061, a base plate 1062, a roller bracket 1063, and a limiting wheel 1064 connected in sequence. The connecting channel steel 1061 is fixedly connected to the vertical frame 102. In another embodiment, as shown... Figure 13 As shown, the horizontal limiting device 106 includes a connecting channel steel 1061, an outer sleeve 1065, a core tube 1066, a base plate 1062, a roller bracket 1063, and a limiting wheel 1064 connected in sequence. The connecting channel steel 1061 is fixedly connected to the vertical frame 102. The outer sleeve and the core tube are plugged into each other, and a locking screw hole is provided on the outer wall of the outer sleeve. The outer sleeve and the core tube are fixed and locked by a locking bolt 1067 installed in the locking screw hole. In the above embodiment, the limiting wheel of the horizontal limiting device is designed as an adjustable structure, which can adjust the plugging position of the outer sleeve and the core tube according to the distance between the limiting wheel and the side of the beam after the construction platform is installed.

[0029] In a preferred embodiment of a temporary construction platform for traveling under beams, such as Figure 14As shown, the system also includes a prestressing tensioning device 700, which includes a tensioning wire rope 701. The tensioning wire rope 701 has a tensioning anchor end 704 at one end. The tensioning wire rope 701 is supported on the first platform end assembly 100, the second platform end assembly 300, and the platform mid-section connecting assembly 200 via pulleys 702 and pulley brackets 703. In one specific embodiment, pulley brackets 703 and pulleys 702 are fixed below the platform mid-section connecting assembly 200. Tensioning anchor ends 704 are provided at both ends of the tensioning wire rope 701, one of which is located on the first platform end assembly 100, and the other on the second platform end assembly 300. The above embodiments of the present invention, through the provision of the prestressing tensioning device, can control the central deflection of the platform mid-section connecting assembly and improve the overall load-bearing capacity of the temporary construction platform under the beam.

[0030] This invention also provides a method for construction under beams, utilizing the temporary construction platform under beams described in the above embodiments. The method includes the following steps: Step 1, placing the temporary construction platform under beams at the corresponding position on beam 500, with the first platform end component 100 corresponding to one side of beam 500, the second platform end component 300 corresponding to the other side of beam 500, and the platform middle connecting component 200 corresponding to the middle connecting part of beam 500; Step 2, using the traveling bracket and traveling wheels 105 to travel on the upper surface of beam 500, when the traveling wheels 105 encounter an obstacle 600 located on beam 500, the four sets of top frames... The top frame 101 closest to the obstacle 600 in the frame 101 performs the following operation: rotate the traveling support 104 about the hinge axis 1046 and make the traveling wheels 105 avoid the obstacle 600; then use the remaining traveling wheels 105 that are in contact with the upper surface of the beam 500 to travel along the long side of the beam 500 until the rotating traveling support 104 passes the obstacle 600; repeat step 2 until all the traveling wheels 105 corresponding to the four sets of top frames 101 have passed the obstacle 600.

[0031] The technical advantages of the construction platform of this invention are: 1. The platform moves smoothly and can flexibly avoid obstacles; by setting a hinged traveling support at the top frame, the traveling wheels can rotate around the hinge axis to lift and avoid pipes, cable conduits or other obstacles on the top surface of the beam, avoiding the need for manual disassembly or detour of traditional platforms, and greatly improving the continuity and efficiency of construction.

[0032] 2. The overall structure is stable and has high load-bearing capacity. The top frame, vertical frame, and bottom frame all adopt modular splicing of Bailey panels, reinforced with diagonal tie rods, ensuring sufficient load-bearing strength and bending resistance while improving the overall structural stability, meeting the safety requirements of bridge construction. Furthermore, the assembly and disassembly of each component are achieved through Bailey panel connectors and frame connecting rods, eliminating the need for extensive welding processes, enabling rapid construction layout and dismantling, and allowing for the recycling of standard components, reducing construction costs and material waste. In addition, the construction platform of this invention can achieve overall beam construction or separate individual beam construction through the disassembly and assembly of the first platform end components, the platform middle connecting components, and the second platform end components.

[0033] The technical features disclosed above are not limited to the combinations of the disclosed features with other features. Those skilled in the art can also make other combinations of the technical features according to the purpose of the invention to achieve the purpose of the invention.

Claims

1. A temporary construction platform for traveling under a beam, the platform traveling along the long side of the beam, the beam comprising a central connecting portion and two side portions located at both ends of the central connecting portion; characterized in that, The construction platform includes: a first platform end assembly, a second platform end assembly, and a platform mid-section connecting assembly. The platform mid-section connecting assembly is detachably connected between the first platform end assembly and the second platform end assembly. Both the first and second platform end assemblies include a top frame, a vertical frame, and a bottom frame. The top frame is installed at the upper end of the vertical frame, and the bottom frame is installed at the lower end of the vertical frame. The free ends of both the top and bottom frames face the beam. A traveling support is hinged to the side of the top frame facing the beam. The traveling support includes a first support group and a second support group, with the ends of the first and second support groups connected... Each support is equipped with a traveling wheel; the first support group and the second support group are spaced apart in the direction perpendicular to the long side of the beam; the traveling wheel contacts the upper surface of the beam and can roll along the long side of the beam; there are two sets of bottom frames and two sets of vertical frames, the bottom frames are arranged parallel to each other and connected by frame connecting rods; the vertical frames are arranged parallel to each other and connected by frame connecting rods; there are four sets of top frames, the top frames are arranged parallel to each other and connected by frame connecting rods; a horizontal limiting device is also included, the horizontal limiting device is perpendicularly connected to the vertical frame, and a limiting wheel is installed at the end of the horizontal limiting device near the beam.

2. The temporary construction platform under the beam as described in claim 1, characterized in that, The first platform end assembly and the second platform end assembly also include a tie rod, the upper end of which is connected to the vertical frame and the lower end of which is connected to the bottom frame.

3. The temporary construction platform for traveling under the beam according to claim 1 or 2, characterized in that, The first support group consists of a first roller support rod and a second roller support rod; the second support group consists of a third roller support rod and a fourth roller support rod; the first support group is located closer to the beam than the second support group; the upper ends of the first roller support rod and the second roller support rod are hinged to the top frame, and the first roller support rod and the second roller support rod can rotate about the hinge axis.

4. The temporary construction platform under the beam according to claim 3, characterized in that, The top frame, vertical frame, and bottom frame are all made by connecting Bailey bridges. The side of the vertical frame facing the beam is provided with a Bailey bridge connector. The end of the top frame that connects to the vertical frame is also provided with a Bailey bridge connector. The top frame and the vertical frame are connected by Bailey bridge connectors.

5. The temporary construction platform for traveling under the beam according to claim 4, characterized in that, A first upper step is installed on the upper part of the bottom frame, and a first lower step is installed on the lower part of the bottom frame; first guardrails are vertically fixed on both sides of the upper step.

6. The temporary construction platform under the beam according to claim 5, characterized in that, The platform's central connecting component includes two sets of parallel central connecting component frames. The upper parts of the two sets of central connecting component frames are connected by upper connecting parts, and the lower parts of the two sets of central connecting component frames are connected by bottom connecting parts. The lower parts of the two sets of central connecting component frames are also connected to horizontal scissor braces. A second upper pedal is installed on the upper part of the central connecting component frame, and a second lower pedal is installed on the lower part of the central connecting component frame.

7. The temporary construction platform under the beam according to claim 6, characterized in that, The second upper step is equipped with second guardrails on both sides; and a personnel passage hole is provided on the second upper step.

8. The temporary construction platform for traveling under the beam according to claim 7, characterized in that, The horizontal limiting device includes a connecting channel steel, a base plate, a roller bracket and a limiting wheel connected in sequence, and the connecting channel steel is fixedly connected to the vertical frame.

9. The temporary construction platform under the beam according to claim 8, characterized in that, It also includes a prestressing tensioning device, which includes a tensioning wire rope with a tensioning anchor end at one end. The tensioning wire rope is supported on the first platform end assembly, the second platform end assembly, and the platform middle connecting assembly via pulleys and pulley supports.

10. A method for construction under beams, characterized in that, Includes the following steps: Step 1: Arrange the temporary construction platform under the beam at the corresponding position on the beam. The end component of the first platform corresponds to one side of the beam, the end component of the second platform corresponds to the other side of the beam, and the middle connecting component of the platform corresponds to the middle connecting part of the beam. Step 2: Use the traveling bracket and traveling wheels to travel on the upper surface of the beam. When the traveling wheels encounter an obstacle on the beam, perform the following operation on the top frame of the four sets of top frames that is closest to the obstacle: rotate the traveling bracket around the hinge axis and make the traveling wheel avoid the obstacle; then use the remaining traveling wheels that are in contact with the upper surface of the beam to travel along the long side of the beam until the rotating traveling bracket passes the obstacle; repeat the operation of Step 2 until all the traveling wheels corresponding to the four sets of top frames have passed the obstacle.

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