A fully assembled work platform for steel pipe arch segment installation

Abstract

The present invention provides a fully assembled work platform for steel pipe arch segment installation, which belongs to the field of construction equipment and includes an upper horizontal channel assembly frame, two vertical channel assembly frames on both sides and a lower horizontal channel assembly frame, wherein the upper horizontal channel assembly frame is arranged on an external arch rib chord tube. An efficient, convenient and safe work platform can be provided for flange bolt installation, plate welding, weld seam detection and paint touch-up between steel pipe arch arch rib segments, which greatly improves the construction efficiency between arch rib segments and reduces the safety risk of construction personnel. Moreover, the platform is a fully assembled structure, which is quick and convenient to install and disassemble, and can be repeatedly used, which greatly saves materials, reduces the overall weight of the arch bridge work platform, reduces the structural stress risk of the inclined-stayed buckle-hanging cantilever steel pipe arch, and has a very high application prospect in the construction of large-span steel pipe arches.

Description

Technical Field

[0001] The invention relates to the field of construction equipment, and in particular to a fully assembled work platform for installing steel pipe arch segments. Background Art

[0002] With the development of society, large-scale steel structure bridges emerge in an endless stream. In the construction of steel tube arch bridges, the construction between arch rib segments, including the installation of flange bolts between segments, welding of cladding, grinding of welds, repainting, weld inspection and other work, often requires an operating platform that is easy to use, easy to install and disassemble, and can ensure a safe working space. In the construction process of traditional large steel tube arch bridges, this operating platform often uses an operating platform with scaffolding or other lightweight components welded. However, such platforms have high risks of high-altitude erection, non-standard platform structure erection, small working space, difficult dismantling, low material utilization rate, and certain safety risks during use. Therefore, it is necessary to design a fully assembled operating platform that is easy to install and disassemble and efficient to use. Summary of the invention

[0003] The purpose of the present invention is to provide a fully assembled work platform for the installation of steel pipe arch segments, so as to solve the technical problem that there is no stable construction platform for the installation of flange bolts between segments, welding of plate wrapping, grinding of welds, repainting and non-destructive testing of welds in the existing steel arch bridge construction.

[0004] Design an efficient working platform that is easy to use, easy to install and disassemble, has a lightweight structure, causes little damage to the arch rib chord tubes, can be used in a turnover manner, and can ensure a safe working space.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A fully assembled work platform for installing steel pipe arch segments comprises an upper horizontal channel assembly frame, two vertical channel assembly frames on both sides and a lower horizontal channel assembly frame. The upper horizontal channel assembly frame is arranged on an external arch rib chord tube, the two vertical channel assembly frames on both sides are respectively arranged on both sides of the front end of the upper horizontal channel assembly frame, and the two ends of the lower horizontal channel assembly frame are connected to the two vertical channel assembly frames on both sides. After installation is completed, a cantilevered work platform is formed at the arch rib port.

[0007] Furthermore, the upper horizontal channel assembly frame includes a crossbeam, a longitudinal beam, a handrail and a foot pedal. The crossbeam is arranged horizontally at the arch rib joint, a plurality of longitudinal beams are arranged horizontally on the crossbeam, the foot pedal is arranged horizontally on the plurality of longitudinal beams, and a plurality of handrails are arranged vertically at intervals at both ends of the longitudinal beam.

[0008] Furthermore, a snap groove is provided at the bottom of the longitudinal beam, and the snap groove is provided at the arch rib joint. The snap groove is pre-welded and fixed at the arch rib chord joint according to the arch rib installation posture angle. The snap groove includes two steel plates, and the two steel plates are welded at both sides of the arch rib joint at intervals. The top is arranged horizontally, and a guardrail longitudinal cross bar is arranged on the longitudinal beam.

[0009] Furthermore, the vertical channel assembly frames on both sides include a bayonet, a frame structure and a first docking interface connecting plate. The bayonet is arranged on one side of the upper end of the frame structure. The bayonet is arranged as an inverted "L"-shaped structure. The connection between the bayonet and the frame structure is arranged as a right-angle structure. The frame structure of the first docking interface connecting plate is arranged on the side. The bayonet is inserted into the crossbeam of the upper horizontal channel assembly frame and is tightened without rotation, so that the vertical channel assembly frames on both sides remain vertical. The bayonet is arranged at the same height as the longitudinal beam of the upper horizontal channel assembly frame, and the longitudinal beam is used to limit the vertical channel assembly frames on both sides laterally.

[0010] Furthermore, the bayonet includes a bayonet top plate and a bayonet neck. The bayonet top plate is horizontally arranged with one end connected to the bayonet neck and the other end connected to the frame structure.

[0011] Furthermore, the frame structure includes a ladder cross bar, a first frame transverse cross bar, a first frame longitudinal cross bar, a frame vertical bar, a second frame transverse cross bar, a second frame longitudinal cross bar and a frame diagonal bar. The two frame vertical bars are respectively vertically arranged with two bayonet holes. The ladder cross bar is arranged between the two frame vertical bars. The second frame transverse cross bar and the second frame longitudinal cross bar constitute a bottom frame type, which is connected to the bottom of the four frame vertical bars. The first frame transverse cross bar and the first frame longitudinal cross bar constitute a top frame type, which is connected to the top of the four frame vertical bars. The frame diagonal bar is obliquely arranged between the front and rear two frame vertical bars.

[0012] Furthermore, the lower horizontal channel assembly frame includes a lower horizontal channel assembly frame guardrail cross bar, a lower horizontal channel assembly frame guardrail vertical bar, a lower horizontal channel assembly frame transverse cross bar, a second docking interface connecting plate and a lower horizontal channel assembly frame longitudinal cross bar, a plurality of lower horizontal channel assembly frame longitudinal cross bars are arranged between two lower horizontal channel assembly frame transverse cross bars, the second docking interface connecting plate is arranged at both ends of the lower horizontal channel assembly frame transverse cross bar, the lower horizontal channel assembly frame guardrail vertical bars are arranged vertically at intervals on the lower horizontal channel assembly frame transverse cross bars, and the lower horizontal channel assembly frame guardrail cross bars are arranged on the top of the lower horizontal channel assembly frame guardrail vertical bars.

[0013] Furthermore, the ladder is arranged in the middle of the vertical channel assembly rack vertical rod, and the docking interface with the lower horizontal channel assembly rack is arranged at a right angle to the vertical channel assembly rack vertical rod, so that the docking interface remains horizontal, and the docking interface reserves bolt connection holes.

[0014] Furthermore, the lower horizontal channel assembly frame is composed of a truss, a handrail, a docking interface, and a foot pedal. The docking interface has a reserved bolt connection hole, the docking interface is fixed to both ends of the truss, and the foot pedal is fixed to the truss.

[0015] Furthermore, the lower horizontal channel assembly frame is fixedly connected to the vertical channel assembly frame by bolts.

[0016] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0017] The present invention can provide an efficient, convenient and safe working platform for flange bolt installation, plate welding, weld detection and paint touch-up between steel tube arch rib segments, greatly improving the construction efficiency between arch rib segments and reducing the safety risks of construction workers. Moreover, the platform is a fully assembled structure, which is quick and convenient to install and disassemble and can be repeatedly used, greatly saving materials, reducing the overall weight of the arch bridge working platform, and reducing the structural stress risk of the inclined-stayed cantilever steel tube arch. It has extremely high application prospects in the construction of large-span steel tube arches. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the components of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the upper horizontal channel assembly rack of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the vertical channel assembly rack of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the lower horizontal channel assembly rack of the present invention;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] In the accompanying drawings, 1 is an upper horizontal channel assembly frame, 1-1 a crossbeam, 1-2 a longitudinal beam, 1-3 a guardrail vertical bar, 1-4 a guardrail transverse crossbar, 1-5 a guardrail longitudinal crossbar, 1-6 a foot pedal, 1-7 a buckle groove, 2 vertical channel assembly frames on both sides, 2-1 a bayonet top plate, 2-2 a bayonet neck, 2-3 a ladder crossbar, 2-4 a first frame transverse crossbar, 2-5 a frame vertical bar, 2-6 a second frame transverse crossbar, 2-7 a first docking interface connecting plate, 2-8 a second frame longitudinal crossbar, 2-9 a frame diagonal bar, 3 a lower horizontal channel assembly frame, 3-1 a lower horizontal channel assembly frame guardrail crossbar, 3-2 a lower horizontal channel assembly frame guardrail vertical bar, 3-3 a lower horizontal channel assembly frame transverse crossbar, 3-4 a second docking interface connecting plate, 3-5 a lower horizontal channel assembly frame longitudinal crossbar. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0025] like Figure 1 and Figure 5 As shown, a fully assembled work platform for installing steel pipe arch segments includes an upper horizontal channel assembly frame 1, two vertical channel assembly frames 2 on both sides and a lower horizontal channel assembly frame 3. The upper horizontal channel assembly frame 1 is arranged on the external arch rib chord tube, and the two vertical channel assembly frames 2 on both sides are respectively arranged on both sides of the front end of the upper horizontal channel assembly frame 1. Both ends of the lower horizontal channel assembly frame 3 are connected to the two vertical channel assembly frames 2 on both sides. After the installation is completed, a cantilevered work platform is formed at the arch rib port.

[0026] In the embodiment of the present invention, Figure 2 As shown, the upper horizontal channel assembly frame 1 includes a crossbeam 1-1, a longitudinal beam 1-2, a handrail 1-3 and a footrest 1-6. The crossbeam 1-1 is arranged horizontally at the arch rib joint, a plurality of longitudinal beams 1-2 are arranged horizontally on the crossbeam 1-1, the footrest 1-6 is arranged horizontally on the plurality of longitudinal beams 1-2, and a plurality of handrails 1-3 are arranged vertically at intervals at both ends of the longitudinal beam 1-2. A buckle groove 1-7 is arranged at the bottom of the longitudinal beam 1-2, and the buckle groove 1-7 is arranged at the arch rib joint. The buckle groove is pre-welded and fixed at the arch rib chord joint according to the arch rib installation posture angle. The buckle groove 1-7 includes two steel plates, which are welded at intervals on both sides of the arch rib joint and arranged horizontally at the top. The longitudinal beam 1-2 is provided with a guardrail longitudinal crossbar 1-5.

[0027] In the embodiment of the present invention, Figure 3 As shown, the vertical channel assembly frames 2 on both sides include a bayonet, a frame structure and a first docking interface connecting plate 2-7, the bayonet is arranged on one side of the upper end of the frame structure, the bayonet is arranged as an inverted "L"-shaped structure, the bayonet and the frame structure are connected at a right angle, the first docking interface connecting plate 2-7 is arranged on the side of the frame structure, the bayonet is clamped into the crossbeam 1-1 of the upper horizontal channel assembly frame 1, the clamping does not rotate, so that the vertical channel assembly frames 2 on both sides remain vertical, the bayonet and the longitudinal beam 1-2 of the upper horizontal channel assembly frame 1 are arranged at the same height, and the longitudinal beam 1-2 is used to horizontally limit the vertical channel assembly frames 2 on both sides. The bayonet includes a bayonet top plate 2-1 and a bayonet neck 2-2, the bayonet top plate 2-1 is horizontally arranged with one end connected to the bayonet neck 2-2, and the other end is connected to the frame structure.

[0028] The frame structure includes a ladder cross bar 2-3, a first frame transverse cross bar 2-4, a first frame longitudinal cross bar, a frame vertical bar 2-5, a second frame transverse cross bar 2-6, a second frame longitudinal cross bar 2-8 and a frame diagonal bar 2-9. The two frame vertical bars 2-5 are respectively vertically arranged with two bayonet joints. The ladder cross bar 2-3 is arranged between the two frame vertical bars 2-5. The second frame transverse cross bar 2-6 and the second frame longitudinal cross bar 2-8 constitute a bottom frame type, and the bottom frame type is connected to the bottom of the four frame vertical bars 2-5. The first frame transverse cross bar 2-4 and the first frame longitudinal cross bar constitute a top frame type, and the top frame type is connected to the top of the four frame vertical bars 2-5. The frame diagonal bar 2-9 is obliquely arranged between the front and rear two frame vertical bars 2-5.

[0029] In the embodiment of the present invention, Figure 4 As shown, the lower horizontal channel assembly frame 3 includes a lower horizontal channel assembly frame guardrail crossbar 3-1, a lower horizontal channel assembly frame guardrail vertical bar 3-2, a lower horizontal channel assembly frame transverse crossbar 3-3, a second docking interface connecting plate 3-4 and a lower horizontal channel assembly frame longitudinal crossbar 3-5, a plurality of lower horizontal channel assembly frame longitudinal crossbars 3-5 are arranged between two lower horizontal channel assembly frame transverse crossbars 3-3, the second docking interface connecting plate 3-4 is arranged at both ends of the lower horizontal channel assembly frame transverse crossbar 3-3, the lower horizontal channel assembly frame guardrail vertical bars 3-2 are arranged vertically at intervals on the lower horizontal channel assembly frame transverse crossbar 3-3, and the lower horizontal channel assembly frame guardrail crossbar 3-1 is arranged on the top of the lower horizontal channel assembly frame guardrail vertical bar 3-2.

[0030] The upper horizontal channel assembly frame 1 is fixedly arranged on the buckle groove at the joint of the arch rib segment, the vertical channel assembly frame 2 is buckled into the upper horizontal channel assembly frame 1, and the lower horizontal channel assembly frame 3 is connected to the vertical channel assembly frame 2 by bolts.

[0031] For example, during the construction of an arch bridge, the subsequent segments need to be connected with the previous segments during installation. At this time, a working platform is required at the arch rib joint. Before the previous segment is installed, the upper horizontal channel assembly frame 1 is fixed on the snap groove at the arch rib segment joint, and the upper horizontal channel assembly frame is adjusted to horizontal through the snap groove 1-7. The vertical channel assembly frame 2 is inserted into the 1-1 crossbeam in the upper horizontal channel assembly frame 1 through the snap groove composed of the 2-1 snap top plate and the 2-2 snap neck, and is laterally limited by the 1-2 small longitudinal beam. The lower horizontal channel assembly frame 3 is connected with the 2-7 docking interface connecting plate 1 through the 3-4 docking interface connecting plate 2 using bolts to form a complete fully assembled working platform, which is lifted and installed in place at the same time as the previous segment. At this time, the installation process of the subsequent segments will be carried out through this platform, and so on and so forth.

[0032] The construction workers enter the working platform through the inspection channel. The upper horizontal channel assembly frame 1, 1-1 beam is fixed at the arch rib joint through the 1-7 buckle groove, and the 1-7 buckle groove is adjusted according to the arch rib installation posture angle to keep the upper surface of the 1-1 beam horizontal, which will keep the entire working platform horizontal and provide a highly efficient and convenient working platform for the construction workers.

[0033] In the embodiment of the present invention, the 1-2 longitudinal beam is fixed to the 1-1 transverse beam, the 1-3 handrail railing vertical rod is fixed to the 1-2 longitudinal beam as an assembled component, the 1-4 handrail railing horizontal rod is fixed to the 1-3 handrail railing vertical rod, and after the vertical channel assembly frame 2 is inserted into the upper horizontal channel assembly frame 1, a foot pedal is laid, which can provide a safe passage for construction workers, and the construction workers can safely enter the working platform using this passage.

[0034] In the embodiment of the present invention, the vertical channel assembly frame 2 is composed of two 2-1 bayonet top plates and a 2-2 bayonet neck, and the bayonet composed of the overall frame structure is clamped into the 1-1 crossbeam in the upper horizontal channel assembly frame 1. Since it is an overall frame structure, the bayonet is set at a right angle to the frame of the vertical channel assembly frame, and the bayonet is clamped into the 1-1 crossbeam in the upper horizontal channel assembly frame 1, and the clamping does not rotate, so that the vertical channel assembly frame 2 remains vertical, and the 1-2 longitudinal beam in the upper horizontal channel assembly frame 1 is used for lateral limitation. The 2-3 ladder is set in the 2-5 vertical rod, so that the ladder can also remain vertical, so that construction personnel can pass through the ladder conveniently and safely.

[0035] In the embodiment of the present invention, the vertical channel assembly frame 2, 2-7 docking interface is set at a right angle to the 2-5 vertical rod, so that the 2-7 docking interface remains horizontal, and the lower horizontal channel assembly frame 3, 3-4 docking interface is fixedly set to the two ends of the 3-3 truss cross bar. When the lower horizontal channel assembly frame 3 is fixedly connected with the vertical channel assembly frame 2 by bolts, the bolts can be easily installed and the truss can be kept horizontal, providing a horizontal working platform for construction personnel.

[0036] In the embodiment of the present invention, after completing the construction between one arch rib segment, first remove the foot pedals of the upper horizontal channel assembly frame 1 and the lower horizontal channel assembly frame 3, then disconnect the bolt connection between the lower horizontal channel assembly frame 3 and the vertical channel assembly frame 2, then remove the vertical channel assembly frame 2 inserted into the upper horizontal channel assembly frame 1, and finally remove the upper horizontal channel assembly frame 1 inserted into the pre-welded slot on the arch rib chord tube, and use the lifting equipment to lift and transfer. The purpose of convenient and easy installation and removal, repeated turnover, and material saving is achieved.

[0037] In the embodiment of the present invention, each component uses a lightweight and high-strength rod, which not only reduces the overall weight of the arch bridge working platform, but also reduces the structural stress risk of the inclined-stayed cantilever steel pipe arch.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A fully assembled work platform for steel pipe arch segment installation, characterized in that: The utility model comprises an upper horizontal channel assembly frame (1), two side vertical channel assembly frames (2) and a lower horizontal channel assembly frame (3), wherein the upper horizontal channel assembly frame (1) is arranged on an external arch rib chord tube, the two side vertical channel assembly frames (2) are respectively arranged on both sides of the front end of the upper horizontal channel assembly frame (1), and the two ends of the lower horizontal channel assembly frame (3) are connected to the two side vertical channel assembly frames (2), and after installation, a cantilevered working platform is formed at the arch rib port; The upper horizontal channel assembly frame (1) comprises a crossbeam (1-1), a longitudinal beam (1-2), a handrail (1-3) and a footrest (1-6); the crossbeam (1-1) is arranged transversely at the arch rib joint, a plurality of longitudinal beams (1-2) are arranged horizontally on the crossbeam (1-1), the footrest (1-6) is arranged horizontally on the plurality of longitudinal beams (1-2), and a plurality of handrails (1-3) are arranged vertically at intervals at both ends of the longitudinal beam (1-2); A buckle groove (1-7) is provided at the bottom of the longitudinal beam (1-2), the buckle groove (1-7) is provided at the arch rib joint, the buckle groove is pre-welded and fixed at the arch rib chord joint according to the arch rib installation posture angle, the buckle groove (1-7) comprises two steel plates, the two steel plates are welded at intervals on both sides of the arch rib joint, and the top is arranged horizontally, and a guardrail longitudinal cross bar (1-5) is provided on the longitudinal beam (1-2); The vertical channel assembly frames (2) on both sides comprise a bayonet, a frame structure and a first docking interface connecting plate (2-7), wherein the bayonet is arranged on one side of the upper end of the frame structure, the bayonet is arranged in an inverted "L"-shaped structure, the bayonet and the frame structure are connected at a right angle, the first docking interface connecting plate (2-7) and the frame structure are arranged on the side, the bayonet is clamped into the crossbeam (1-1) of the upper horizontal channel assembly frame (1), and is clamped so as not to rotate, so that the vertical channel assembly frames (2) on both sides are kept vertical, the bayonet and the longitudinal beam (1-2) of the upper horizontal channel assembly frame (1) are arranged at the same height, and the longitudinal beam (1-2) is used to limit the vertical channel assembly frames (2) on both sides in a lateral direction; The bayonet comprises a bayonet top plate (2-1) and a bayonet neck (2-2); the bayonet top plate (2-1) is horizontally arranged with one end connected to the bayonet neck (2-2) and the other end connected to the frame structure; The frame structure comprises a ladder crossbar (2-3), a first frame transverse crossbar (2-4), a first frame longitudinal crossbar, a frame vertical bar (2-5), a second frame transverse crossbar (2-6), a second frame longitudinal crossbar (2-8) and a frame diagonal bar (2-9), wherein the two frame vertical bars (2-5) are respectively arranged vertically with two bayonet holes, the ladder crossbar (2-3) is arranged between the two frame vertical bars (2-5), the second frame transverse crossbar (2-6) and the second frame longitudinal crossbar (2-8) form a bottom frame shape, which is connected to the bottoms of the four frame vertical bars (2-5), the first frame transverse crossbar (2-4) and the first frame longitudinal crossbar form a top frame shape, which is connected to the tops of the four frame vertical bars (2-5), and the frame diagonal bar (2-9) is obliquely arranged between the front and rear two frame vertical bars (2-5); The lower horizontal channel assembly frame (3) comprises a lower horizontal channel assembly frame guardrail crossbar (3-1), a lower horizontal channel assembly frame guardrail vertical bar (3-2), a lower horizontal channel assembly frame transverse crossbar (3-3), a second docking interface connecting plate (3-4) and a lower horizontal channel assembly frame longitudinal crossbar (3-5), a plurality of lower horizontal channel assembly frame longitudinal crossbars (3-5) are arranged between two lower horizontal channel assembly frame transverse crossbars (3-3), the second docking interface connecting plate (3-4) is arranged at both ends of the lower horizontal channel assembly frame transverse crossbar (3-3), the lower horizontal channel assembly frame guardrail vertical bars (3-2) are arranged vertically at intervals on the lower horizontal channel assembly frame transverse crossbar (3-3), and the lower horizontal channel assembly frame guardrail crossbar (3-1) is arranged on the top of the lower horizontal channel assembly frame guardrail vertical bar (3-2).

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