Circumferential weld operation trolley for cantilever construction of ultra-wide split type steel box girder

Abstract

The utility model belongs to the technical field of steel structure bridge construction, and particularly discloses an ultra-wide split type steel box girder cantilever construction circumferential weld operation trolley which comprises a lifting system, a fixing frame, a split type steel box girder and a circumferential weld operation trolley body arranged on the side edge of the split type steel box girder. The circumferential weld operation trolley body comprises a walking system, an upper transverse supporting truss, a vertical connecting truss, a lower transverse supporting truss 44 and an operation platform. The walking system comprises a walking chassis, an inner side connecting frame, an outer side connecting frame, a connecting cross rod and a balance weight. The upper transverse supporting truss is installed above the outer side connecting frame, and the vertical connecting truss is connected with the upper transverse supporting truss and the lower transverse supporting truss 44. The working platform comprises standard knots, end reinforcing knots, middle reinforcing knots, diagonal draw bars, a lifting frame and a stabilizing frame. The lifting system comprises a winch, a steel wire rope and a shackle and can conduct lifting operation of the operation platform.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel structure bridge construction technical field, concretely is a kind of super-wide split type steel box girder cantilever construction girth weld operation trolley. BACKGROUND

[0002] Double-tower double-cable-plane half-floating system cable-stayed bridge, the main span steel box girder between two main towers is installed using cantilever method, due to long span and no support, it is necessary to set girth weld operation platform at girth position, when traditional cable-stayed bridge cantilevers are constructed, it is often constructed using track permanent maintenance trolley set at the bottom of steel box girder, since maintenance trolley is designed as trackless maintenance trolley, it is installed after whole bridge closure, so it cannot be used in cantilever construction stage;Since there is no track at the bottom of girder, the width of steel box girder bridge deck is large, so it is difficult to hang temporary operation platform at the bottom of girder, thus a kind of girth weld operation platform is needed, which is arranged on bridge deck, to solve the operation needs of super-wide steel box girder girth polishing, ceramic gasket sticking, local weld welding, repair, paint polishing and coating and other constructions. SUMMARY

[0003] The utility model aims at providing a kind of super-wide split type steel box girder cantilever construction girth weld operation trolley, to solve the operation needs of super-wide steel box girder girth polishing, ceramic gasket sticking, local weld welding, repair, paint polishing and coating and other constructions.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of super-wide split type steel box girder cantilever construction girth weld operation trolley, including lifting system, fixed frame, split type steel box girder and the girth weld operation trolley main body being set at the side of split type steel box girder, the girth weld operation trolley main body includes travel system, upper transverse support truss, vertical connection truss, lower transverse support truss and operation platform;Travel system is placed at the distance edge of bridge deck not less than 100mm distance;

[0005] The travel system includes travel chassis, inner side connecting frame, outer side connecting frame, connecting cross bar and counterweight, the inner side connecting frame and the outer side connecting frame are respectively mounted on travel chassis, and the inner side connecting frame is fixed with the outer side connecting frame by connecting cross bar, and the counterweight is arranged above the inner side connecting frame;

[0006] The upper transverse support truss is installed above the outer side connecting frame, and the vertical connection truss is connected with the upper transverse support truss and the lower transverse support truss respectively;

[0007] The operation platform includes standard section, end reinforcing section, middle reinforcing section, cable-stayed rod, lifting frame and stabilizing frame;End reinforcing section is arranged at both ends of middle reinforcing section, and end reinforcing section and middle reinforcing section are both composed of multiple standard sections, cable-stayed rod is arranged below operation platform, and lifting frame is arranged on end reinforcing section;

[0008] The lifting system comprises a winch, a steel wire rope and a shackle, the winch is connected with the lifting frame through the steel wire rope and the shackle, and the lifting frame can be used for lifting operation of the operation platform.

[0009] As preferred in the utility model, eight connecting cross bars are arranged, and the two connecting cross bars close to the cable-stayed cable are removed in sequence in the walking forward direction, and the two connecting cross bars are mounted in time after passing the cable-stayed cable, two connecting cross bars can be removed, and six connecting cross bars are ensured to be connected, so that the cable-stayed cable is safely passed.

[0010] As preferred in the utility model, the end reinforcing joint and the middle reinforcing joint are connected with the cable-stayed rod through bolts to adjust the length of the cable-stayed rod.

[0011] As preferred in the utility model, the lifting frame is connected with the operation platform through bolts to facilitate disassembly and assembly of the operation platform in the later period.

[0012] As preferred in the utility model, the lower transverse support truss is fixed with a fixing frame.

[0013] As preferred in the utility model, the standard joint is composed of three truss pieces, and the cable-stayed rod is composed of a round rod and a basket screw, and the length of the basket screw can be adjusted.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The utility model ensures to meet the operation requirements of ring seam polishing, ceramic lining pasting, local weld seam welding, repairing, paint polishing and coating and the like construction, the ring weld seam operation trolley can be self-propelled, is convenient to use, can realize passing the cable-stayed cable, shortens the field installation period, is the key measure for ensuring the steel box girder welding, coating quality and construction safety; compared with the prior art, the problem of mounting the temporary operation platform on the beam bottom without track and the walking mechanism passing the cable-stayed cable is solved, and the utility model has the advantages of high efficiency, safety, simple structure, convenient installation and operation, and good application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a working state schematic view of the utility model;

[0018] Figure 3 It is an operation platform operation ship assembling schematic view of the utility model.

[0019] In the figure: 1, bridge crane; 2, split steel box girder; 3, cable-stayed cable; 4, ring weld operation trolley main body; 41, walking system; 411, walking chassis; 412, inner side connecting frame; 413, outer side connecting frame; 414, connecting cross bar; 415, counterweight; 42, upper transverse support truss; 43, vertical connecting truss; 44, lower transverse support truss; 45, operation platform; 451, standard section; 452, end reinforcing section; 453, middle reinforcing section; 454, inclined rod; 455, lifting frame; 456, stabilizing frame; 5, lifting system; 6, fixed frame; 7, passageway; 8, beam transport ship. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "vertical", "upper", "lower", "horizontal" and the like is the orientation or position relationship shown based on the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0022] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] Please refer to Figure 1 The utility model provides a kind of technical scheme: a kind of super-wide split steel box girder 2 cantilever construction ring weld operation trolley, including lifting system 5, fixed frame 6, split steel box girder 2 and the ring weld operation trolley main body 4 being set in split steel box girder 2 side edge, the ring weld operation trolley main body 4 includes walking system 41, upper transverse support truss 42, vertical connecting truss 43, lower transverse support truss 44 and operation platform 45;Walking system 41 is placed at the distance edge of bridge deck not less than 100mm distance.

[0024] Further, the walking system 41 comprises a walking chassis 411, an inner connecting frame 412, an outer connecting frame 413, a connecting crossbar 414 and a counterweight 415, the inner connecting frame 412 and the outer connecting frame 413 are respectively installed on the walking chassis 411, the inner connecting frame 412 and the outer connecting frame 413 are fixed through the connecting crossbar 414, and the counterweight 415 is arranged above the inner connecting frame 412.

[0025] Further, the upper transverse support truss 42 is installed above the outer connecting frame 413, and the vertical connecting truss 43 is connected with the upper transverse support truss 42 and the lower transverse support truss 44 respectively.

[0026] Further, the working platform 45 comprises a standard section 451, an end reinforcing section 452, a middle reinforcing section 453, a cable-stayed rod 454, a lifting frame 455 and a stabilizing frame 456; the end reinforcing section 452 is arranged at both ends of the middle reinforcing section 453, the end reinforcing section 452 and the middle reinforcing section 453 are both composed of a plurality of standard sections 451, the cable-stayed rod 454 is arranged below the working platform 45, and the lifting frame 455 is arranged on the end reinforcing section 452.

[0027] Further, the lifting system 5 comprises a winch, a steel wire rope and a shackle, the winch is connected with the lifting frame 455 through the steel wire rope and the shackle, and the lifting system 5 can perform lifting operation of the working platform 45.

[0028] Further, the connecting crossbar 414 is provided with eight connecting crossbars 414, in the walking forward direction, the connecting crossbar 414 close to the cable-stayed rod 3 is disassembled in sequence, and the connecting crossbar 414 is assembled in time after passing the cable-stayed rod 3, two connecting crossbars 414 can be disassembled, so that six connecting crossbars 414 are connected to ensure safe passing of the cable-stayed rod 3.

[0029] Further, the end reinforcing section 452 and the middle reinforcing section 453 are connected with the cable-stayed rod 454 through bolts, the length of the cable-stayed rod 454 is adjusted to form a pre-camber to prevent the working platform 45 from being deflected downward.

[0030] Further, the lifting frame 455 is connected with the working platform 45 through bolts to facilitate disassembly and assembly of the lifting frame 455 in the later period.

[0031] Further, the lower transverse support truss 44 is fixed with a fixing frame 6, the fixing frame 6 is bolted with the working platform 45 when the working platform 45 is lifted to a working position; the stabilizing frame 456 is rigidly connected with the bottom plate of the steel box girder after the working platform 45 is lifted to the working position, and the channel 7 is installed after the working platform 45 is lifted to the working position, please refer to Figure 2 .

[0032] Furthermore, the standard section 451 is composed of three truss pieces, and the diagonal tie rod 454 is composed of a round rod and a turnbuckle, with the turnbuckle adjustable to adjust the length.

[0033] The standard section 451, end reinforcing section 452, middle reinforcing section 453, diagonal tie rod 454, lifting frame 455, and stabilizing frame 456 of the working platform 45 of this utility model are respectively hoisted onto the top of the steel box girder of the beam transport vessel 8 using lifting equipment for assembly. Please refer to [link / reference]. Figure 3 The walking system 41, the upper transverse support truss 42, the vertical connecting truss 43, and the lower transverse support truss 44 are assembled using lifting equipment; the lifting system 5 is lowered and connected to the working platform 45 with a steel wire rope, and after being lifted to the working position, the fixing frame 6 is bolted to the working platform 45, making it ready for use.

[0034] The procedure includes the following steps:

[0035] S1. After the bridge deck crane 1 lifts the steel box girder 2 and adjusts the alignment to meet the requirements, the circumferential weld seam matching plate is then installed.

[0036] S2. After the circumferential weld web plate and top plate are welded, the main body 4 of the circumferential weld operation trolley moves forward to the welding position of the circumferential weld bottom plate.

[0037] S3. After the welding and painting operations of the circumferential weld are completed, the main body of the circumferential weld operation trolley 4 moves forward to the front end via the inclined cable 3.

[0038] It is worth noting that the entire device is controlled by a master control button. Since the device matched with the control button is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A kind of super-wide split steel box girder cantilever construction girth welding operation trolley, it is characterized in that: The application relates to a lifting system (5), a fixing frame (6), a split steel box girder (2) and a girth weld operation trolley main body (4) arranged at the side of the split steel box girder (2), wherein the girth weld operation trolley main body (4) comprises a walking system (41), an upper transverse support truss (42), a vertical connecting truss (43), a lower transverse support truss (44) and an operation platform (45). The walking system (41) comprises a walking chassis (411), an inner side connecting frame (412), an outer side connecting frame (413), a connecting cross rod (414) and a counterweight (415), the inner side connecting frame (412) and the outer side connecting frame (413) are respectively arranged on the walking chassis (411), the inner side connecting frame (412) and the outer side connecting frame (413) are fixed through the connecting cross rod (414), and the counterweight (415) is arranged above the inner side connecting frame (412). The upper transverse support truss (42) is arranged above the outer side connecting frame (413), the vertical connecting truss (43) is connected with the upper transverse support truss (42) and the lower transverse support truss (44) respectively. The operation platform (45) comprises standard sections (451), end reinforcing sections (452), middle reinforcing sections (453), inclined pull rods (454), lifting frames (455) and stabilizing frames (456); the end reinforcing sections (452) are arranged at two ends of the middle reinforcing sections (453), the end reinforcing sections (452) and the middle reinforcing sections (453) are both composed of multiple standard sections (451), the inclined pull rods (454) are arranged below the operation platform (45), and the lifting frames (455) are arranged on the end reinforcing sections (452). The lifting system (5) comprises a winch, a steel wire rope and a shackle, and the winch is connected with the lifting frame (455) through the steel wire rope and the shackle.

2. The super-wide split steel box girder cantilever construction girth weld operation trolley according to claim 1, characterized in that: The connecting cross rod (414) is provided with eight connecting cross rods.

3. The super-wide split steel box girder cantilever construction girth weld operation trolley according to claim 1, characterized in that: The end reinforcing sections (452) and the middle reinforcing sections (453) are connected with the inclined pull rods (454) through bolts.

4. The super-wide split steel box girder cantilever construction girth weld operation trolley according to claim 1, characterized in that: The lifting frames (455) are connected with the operation platform (45) through bolts.

5. The super-wide split steel box girder cantilever construction girth weld operation trolley according to claim 1, characterized in that: The lower transverse support truss (44) is fixed with the fixing frame (6).

6. The super-wide split steel box girder cantilever construction girth weld operation trolley according to claim 1, characterized in that: The standard section (451) is composed of three truss pieces, and the inclined pull rod (454) is composed of a round rod and a basket screw.

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