Bridge girder erection machine rail amplitude-crossing support and beam and slab span-crossing construction system

Abstract

The utility model discloses a bridge girder erection machine track amplitude-crossing support and a beam and slab span construction system, and the bridge girder erection machine track amplitude-crossing support comprises a plurality of supporting devices which are distributed along a bridge girder erection machine track at intervals, transverse connecting devices which are arranged between two adjacent supporting devices, and anti-overturning devices which are connected with the supporting devices; the supporting device is of a liftable structure. The transverse connecting devices are used for connecting every two adjacent supporting devices into a whole in the length direction of the bridge girder erection machine track. The anti-overturning devices are used for extending in the width direction of the bridge girder erection machine track and are fixed to the two opposite sides of the transition pier bent cap respectively. The track amplitude-passing support of the bridge girder erection machine is high in overall stability, simple and efficient in structure, convenient and fast to disassemble, assemble and adjust, free of occupying too much width space, capable of being better matched with transition pier cover beams of different specifications, high in applicability and capable of being used in different places in a turnover mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field, in particular, relate to a kind of bridge erecting machine track over width support, and girder slab span width construction system using the bridge erecting machine track over width support. BACKGROUND

[0002] In the field of bridge engineering, due to the difference of topography and geomorphology, there are often multiple forms of the superstructure of a line bridge, such as precast beams, variable cross-section continuous cantilever cast-in-place box girders (referred to as suspended cast-in-place box girders), cast-in-place box girders, and combinations thereof. Suspended cast-in-place box girders are often used in large-span bridge structures such as road and river crossings due to their high stiffness, but the process of suspended cast-in-place box girders is complex and requires segment-by-segment advancement, which is limited by the time of various processes and has a long construction period. In actual construction, due to the limitation of resource investment, the left and right spans of the suspended cast-in-place box girder often cannot be connected at the same time. When the position of the suspended cast-in-place box girder is on the key line of the girder slab erection, in order to meet the synchronous advancement of the left and right span girder slab erection and ensure that the girder slab erection does not affect the bridge deck system construction, there is often a situation of precast girder slab erection for the full span based on a single-span connected suspended cast-in-place box girder. The erection of the first span precast girder slab on the side where the suspended cast-in-place box girder is not connected becomes a technical difficulty, especially when the length of the precast T girder is more than 40 m. The use of a double-machine lifting truck crane for the erection of the first span precast girder slab has high safety risks and high requirements for the foundation of the truck crane station. The foundation often does not meet the requirements, and it is an ultra-dangerous large project. The construction scheme needs to be separately prepared and demonstrated, and the construction cost is high. Therefore, a bridge erecting machine capable of transversely moving across the span is needed, and the installation convenience and stability of the over-span support of the bridge erecting machine track are particularly important.

[0003] Chinese invention patent CN116163230A provides a bridge erecting machine transverse moving track automatic leveling system, which supports the transverse moving track through two rows of supporting legs distributed on opposite sides of the transverse moving track. Although it can improve the support stability of the transverse moving track, its structure is complex, and the excessive number of supporting legs leads to complicated disassembly and adjustment procedures, high requirements for operators, and the two rows of supporting legs are not in a straight line, which requires a larger width space and has high requirements for the size of the transition pier cap beam, so the applicability is not strong. UTILITARY MODEL

[0004] The utility model primarily provides a kind of bridge erecting machine track over width support to solve the technical problems that the support device structure of existing bridge erecting machine transverse moving track is complex and poor in applicability.

[0005] The utility model also provides a kind of girder slab span width construction system, which uses the above-mentioned bridge erecting machine track over width support.

[0006] According to one aspect of the utility model, provide a kind of bridge girder erection machine track over width support, including multiple support devices for being spaced apart along bridge girder erection machine track, transverse connecting device being arranged between adjacent two support devices, and anti-overturning device connected with the support device;

[0007] The support device includes a fixed column, a lifting column, and a lifting jack. The fixed column is used to be installed on the transition pier cap beam. The lifting column is coaxially embedded in the inner cavity of the fixed column relative to the fixed column and is used to support the bridge girder erection machine track. The lifting jack is arranged between the fixed column and the lifting column and is used to drive the lifting column to move up and down.

[0008] The transverse connecting device is used to connect adjacent two support devices into a whole along the length direction of the bridge girder erection machine track.

[0009] The anti-overturning device is used to be arranged along the width direction of the bridge girder erection machine track and is fixed on the opposite sides of the transition pier cap beam, respectively.

[0010] Preferably, the support device further includes a limiting pin. A first limiting hole group is arranged on the side wall of the lifting column. The first limiting hole group includes multiple first limiting holes which are spaced apart along the circumference of the lifting column. Multiple second limiting hole groups are arranged on the side wall of the fixed column along the height direction thereof. A single second limiting hole group includes multiple second limiting holes which are spaced apart along the circumference of the fixed column. The limiting pin is used to be sequentially inserted into corresponding second limiting holes and first limiting holes and to limit and fix the lifting column in the height direction.

[0011] Preferably, the first limiting hole group is arranged in two layers along the height direction of the lifting column. The spacing between the two layers of first limiting holes is greater than the spacing between adjacent two layers of second limiting holes.

[0012] Preferably, an oil injection hole is arranged on the side wall of the fixed column. The oil injection hole is used to inject lubricating oil into the gap between the fixed column and the lifting column.

[0013] Preferably, the support device further includes a first support seat arranged on the bottom of the fixed column and a second support seat arranged on the top of the lifting column. The width of the first support seat is greater than the width of the fixed column and is used to be installed on the transition pier cap beam. The width of the second support seat is greater than the width of the lifting column and is used to support the bridge girder erection machine track. Limiting stoppers are arranged on the opposite sides of the second support seat. The limiting stoppers are used to form limiting clamping grooves which are matched with the bridge girder erection machine track.

[0014] Preferably, two hinge seats are arranged on the side wall of the fixed column along the height direction. The transverse connecting device includes two telescopic rod assemblies which are hingedly connected with the two hinge seats one by one.

[0015] In the two adjacent support devices, the first end of the telescopic rod assembly is hinged to the upper hinge seat in one of the support devices, and the second end of the telescopic rod assembly is hinged to the lower hinge seat in the other support device, so that the telescopic rod assembly forms a diagonal bracing structure between the two adjacent support devices, and the two telescopic rod assemblies are arranged in a cross manner.

[0016] Preferably, the telescopic rod assembly comprises a first threaded pipe and two second threaded pipes arranged coaxially, the first threaded pipe is arranged between the two second threaded pipes, one of the first threaded pipe and the second threaded pipes is provided with an internal thread, and the other is provided with an external thread matched with the internal thread.

[0017] The two ends of the first threaded pipe are threadedly connected with the two second threaded pipes respectively, the thread directions on the two ends of the first threaded pipe are opposite, and the middle part of the first threaded pipe is provided with a driving part for driving the first threaded pipe to rotate by a driving tool, so as to drive the two second threaded pipes to move close to or away from each other through the thread cooperation.

[0018] Preferably, the anti-overturning device comprises two rectangular steel pipes and two tie mechanisms, the rectangular steel pipes are arranged to extend to opposite sides of the transition pier cap beam along the width direction of the bridge girder, and the two tie mechanisms are arranged at opposite ends of the rectangular steel pipes.

[0019] The two rectangular steel pipes are arranged side by side and pass through the bottom of the fixed column, the tie mechanism comprises an L-shaped draw hook, a tie seat, a tie threaded steel and a tie nut, the L-shaped draw hook is used for clamping the bottom of one side of the transition pier cap beam, the tie seat is arranged above the rectangular steel pipe, the first end of the tie threaded steel is connected with the L-shaped draw hook, the second end of the tie threaded steel is arranged to pass through the gap between the two rectangular steel pipes and pass through the tie seat, and the tie nut is threadedly connected with the segment of the tie threaded steel passing through the tie seat and is used for tightly fixing the tie seat relative to the L-shaped draw hook.

[0020] Preferably, the anti-overturning device further comprises an adjusting sliding groove arranged above the rectangular steel pipe and extending along the length direction of the rectangular steel pipe, and the tie seat is embedded in the adjusting sliding groove and is used for sliding and adjusting the position along the adjusting sliding groove, so that the spacing between the two tie mechanisms can adapt to transition pier cap beams with different widths.

[0021] As a second aspect, the utility model also provides a beam-slab span construction system, including a bridge-erecting machine and a bridge-erecting machine track, and the above-mentioned bridge-erecting machine track width-crossing bracket, the bridge-erecting machine track width-crossing bracket is used to be installed on the transition pier cap beam on the unpenetrated side of the cantilever box girder, the first end of the bridge-erecting machine track is used to be set on the bridge-erecting machine track width-crossing bracket, the second end of the bridge-erecting machine track is used to extend to the cantilever box girder on the penetrated side of the cantilever box girder, the bridge-erecting machine is set on the bridge-erecting machine track and is used to move along the bridge-erecting machine track.

[0022] The utility model has the following beneficial effects:

[0023] The plurality of support devices in the bridge-building machine track width transition bracket provided by the utility model are arranged in sequence along a straight line direction, two adjacent support devices are connected into a whole through a transverse connecting device, and are connected and fixed to the opposite sides of the transition pier cap beam through an anti-overturning device, so that the support devices are limited from the length direction and the width direction of the bridge-building machine track respectively, and the overall stability of the bridge-building machine track width transition bracket is effectively improved. The structure is simple and efficient, and the disassembly and assembly and adjustment are convenient and quick. Moreover, since the plurality of support devices are arranged in a straight line direction, there is no need to occupy too much width space, and it can better adapt to transition pier cap beams of different specifications. It has strong applicability and can be used in different places.

[0024] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 A schematic diagram of the structure of a track width bracket for a bridge erection machine provided in an embodiment of the utility model;

[0027] Figure 2 for Figure 1 The structural diagram of the support device in the bridge erection machine track width bracket shown;

[0028] Figure 3 for Figure 1 The structural diagram of the anti-overturning device in the track width bracket of the bridge erection machine is shown;

[0029] Figure 4 for Figure 3 The schematic diagram of the assembly structure of the anti-overturning device shown is from another angle;

[0030] Figure 5The structural schematic diagram of the beam plate span construction system provided by the embodiment of the utility model;

[0031] Figure 6 For Figure 5 The structural schematic diagram of the pre-counterforce support frame in the beam plate span construction system is shown.

[0032] Legend:

[0033] 100, bridge erecting machine track span support; 1, support device; 11, fixed column; 111, second limiting hole; 112, oil injection hole; 12, lifting column; 121, first limiting hole; 13, lifting jack; 14, limiting pin; 15, first support seat; 16, second support seat; 17, limiting block; 18, hinged seat; 2, transverse connecting device; 21, telescopic rod assembly; 211, first threaded pipe; 212, second threaded pipe; 3, anti-overturning device; 31, rectangular steel pipe; 32, tie mechanism; 321, L-shaped draw hook; 322, tie seat; 323, tie threaded steel; 324, tie nut;

[0034] 200, pre-counterforce support frame; 201, support column; 202, flat jack;

[0035] 300, bridge erecting machine track; 400, bridge erecting machine. DETAILED DESCRIPTION

[0036] The embodiments of the utility model are described in detail below in combination with the drawings, but the utility model can be implemented in multiple different ways limited and covered by the following.

[0037] Figures 1 to 6 The bridge erecting machine track span support and the beam plate span construction system provided by the embodiment of the utility model are jointly shown, wherein the bridge erecting machine track span support is used to be arranged on the non-penetrating side of the cantilever box girder and support the bridge erecting machine track, so that the bridge erecting machine can be stably transversely moved from the already-penetrating side to the non-penetrating side of the cantilever box girder, thereby being able to meet the construction scene of erecting the full-span prefabricated beam plate based on the single-span penetration of the cantilever box girder, and the structure is simple, efficient and highly applicable.

[0038] As Figure 1 shown, the bridge erecting machine track span support 100 comprises a plurality of support devices 1 arranged at intervals along the bridge erecting machine track 300, a transverse connecting device 2 arranged between the adjacent two support devices 1, and an anti-overturning device 3 connected with the support device 1. The support device 1 adopts a liftable structure to adapt to different support heights, the transverse connecting device 2 is used to connect the adjacent two support devices 1 into a whole along the length direction of the bridge erecting machine track 300, and the anti-overturning device 3 is used to extend along the width direction of the bridge erecting machine track 300 and is respectively fixed on the opposite sides of the transition pier cap beam.

[0039] Since the plurality of support devices 1 in the bridge machine track overpass support 100 are arranged in a straight line direction in sequence, the adjacent two support devices 1 are connected into a whole through the transverse connecting device 2, and are connected and fixed with the opposite sides of the transition pier cap beam through the anti-overturning device 3, so as to limit the support device 1 from the length direction and the width direction of the bridge machine track 300 respectively, effectively improve the overall stability of the bridge machine track overpass support 100, the structure is simple and efficient, and the disassembly and adjustment are convenient and fast, and since the plurality of support devices 1 are arranged in a straight line direction, a large width space is not occupied, different specifications of transition pier cap beams can be better adapted, the applicability is strong, and the turnover use can be carried out in different places.

[0040] As shown in Figure 2 The support device 1 includes a fixed column 11, a lifting column 12 and a lifting jack 13, the fixed column 11 is used for being installed on the transition pier cap beam, the lifting column 12 is coaxially embedded in the inner cavity of the fixed column 11 relative to the fixed column 11 and is used for supporting the bridge machine track 300, and the lifting jack 13 is arranged between the fixed column 11 and the lifting column 12 and is used for driving the lifting column 12 to move up and down.

[0041] Specifically, the fixed column 11 is provided as a top-end-opened cylindrical structure, the lifting column 12 is inserted into the inner cavity of the fixed column 11 from the top end of the fixed column 11, the bottom of the lifting column 12 is provided with a thickened bottom plate, the lifting jack 13 is installed at the bottom of the inner cavity of the fixed column 11 and is used for abutting against the thickened bottom plate of the lifting column 12, the lifting column 12 is driven to move up and down by the lifting jack 13, the support height of the lifting column 12 to the bridge machine track 300 can be adjusted, different support height requirements can be met, and the lifting column 12 can be guided and limited by the side wall of the fixed column 11 during the lifting process, so as to effectively improve the support stability and lifting adjustment precision of the lifting column 12.

[0042] Preferably, the support device 1 further comprises a limiting pin 14, the side wall of the lifting column 12 is provided with a first limiting hole group, the first limiting hole group comprises a plurality of first limiting holes 121 arranged at intervals along the circumference of the lifting column 12; the side wall of the fixed column 11 is provided with a plurality of layers of second limiting hole groups at intervals along the height direction thereof, a single layer of second limiting hole group comprises a plurality of second limiting holes 111 arranged at intervals along the circumference of the fixed column 11; the limiting pin 14 is used to be inserted into the corresponding second limiting hole 111 and first limiting hole 121 in sequence and limit and fix the lifting column 12 in the height direction when the lifting column 12 moves up and down to the first limiting hole group opposite to any layer of second limiting hole group. After the lifting column 12 is adjusted, the lifting column 12 is limited and fixed by the limiting pin 14, so that the lifting column 12 can be stably supported at a fixed height position, further improving the support effect.

[0043] More preferably, the first limiting hole group is provided with two layers at intervals along the height direction of the lifting column 12, and the spacing between the two layers of first limiting hole groups is greater than the spacing between the adjacent two layers of second limiting hole groups. Since the spacing between the two layers of first limiting hole groups is relatively small, the first limiting hole group and the second limiting hole group can be limited by the first layer of first limiting hole group and the second layer of first limiting hole group, respectively, so that the first limiting hole group and the second limiting hole group have more combination modes and more height adjustment levels, which can more finely adjust the specific support height of the lifting column 12 and reduce the use of shims.

[0044] In the embodiment, each layer of second limiting hole group comprises four second limiting holes 111 arranged at equal intervals along the circumference of the fixed column 11, i.e. the four second limiting holes 111 are arranged on the front, rear, left and right directions of the fixed column 11; each layer of first limiting hole group comprises two first limiting holes 121 arranged on opposite sides of the lifting column 12, and the opening directions of the two layers of first limiting hole groups are arranged at an offset of 90 degrees. When one layer of first limiting hole group cooperates with the second limiting hole group, two limiting pins 14 are inserted into two second limiting holes 111 on the front and rear directions of the fixed column 11, respectively; when the other layer of first limiting hole group cooperates with the second limiting hole group, two limiting pins 14 are inserted into two second limiting holes 111 on the left and right directions of the fixed column 11, respectively. The opposite sides of the lifting column 12 are limited and fixed by the two limiting pins 14, so that the lifting column 12 is uniformly stressed, has better stability, higher support strength, and ensures that the stress of the lifting column 12 is effectively transmitted to the fixed column 11. When the height is adjusted in a small range and switched to the other layer of first limiting hole group for limiting, the hole structure with an offset of 90 degrees can also be more convenient for repositioning and will not interfere.

[0045] Preferably, an oil injection hole 112 is further arranged on the side wall of the fixed column 11, the oil injection hole 112 is arranged at the upper part of the fixed column 11 and is arranged in multiple along the circumference of the fixed column 11, the oil injection hole 112 is used to inject lubricating oil into the gap between the fixed column 11 and the lifting column 12, so that the lifting and sliding of the lifting column 12 is more smooth, and the jamming is avoided.

[0046] Preferably, the support device 1 further comprises a first support base 15 arranged on the bottom of the fixed column 11 and a second support base 16 arranged on the top of the lifting column 12, the width of the first support base 15 is greater than the width of the fixed column 11 and is used to be installed on the transition pier cap beam, the width of the second support base 16 is greater than the width of the lifting column 12 and is used to support the bridge erecting machine track 300. The support stress area of the support device 1 is increased by the first support base 15 and the second support base 16, and the support stability is improved.

[0047] Further, the opposite sides of the second support base 16 are provided with limiting stoppers 17, and the two limiting stoppers 17 are used to form a limiting clamping groove which is matched with the bridge erecting machine track 300 on the upper surface of the second support base 16, and the bridge erecting machine track 300 is clamped and fixed through the limiting clamping groove, so that the displacement of the bridge erecting machine track 300 during the movement of the bridge erecting machine is prevented.

[0048] Further, the first support base 15 and the second support base 16 are provided with reinforcing ribs, the reinforcing ribs of the first support base 15 are connected with the side wall of the fixed column 11, and the reinforcing ribs of the second support base 16 are connected with the side wall of the lifting column 12, so that the overall structural strength and stability are further improved through the reinforcing ribs.

[0049] Please refer to Figure 1 and Figure 2 , two hinge seats 18 are arranged on the side wall of the fixed column 11 along the height direction, the transverse connecting device 2 comprises two telescopic rod assemblies 21 which are hingedly connected with the two hinge seats 18 one by one, and the telescopic rod assembly 21 adopts a telescopic structure.

[0050] Specifically, in the two adjacent support devices 1, the first end of the telescopic rod assembly 21 is hinged to the upper hinge seat 18 in one of the support devices 1, and the second end of the telescopic rod assembly 21 is hinged to the lower hinge seat 18 in the other support device 1, so that the telescopic rod assembly 21 forms a diagonal bracing structure between the two adjacent support devices 1, and the two telescopic rod assemblies 21 are arranged in a cross manner. The two adjacent support devices 1 are connected into a whole by the two telescopic rod assemblies 21 arranged in a cross manner, forming a triangular bracing structure, which is stable and ensures that the support device 1 is not easy to sway. Since the length of the telescopic rod assembly 21 can be adjusted, the support device 1 can be applied to two support devices 1 with different distances, and has strong adaptability and can be repeatedly used.

[0051] Further, the telescopic rod assembly 21 comprises a first threaded pipe 211 and two second threaded pipes 212 arranged coaxially, the first threaded pipe 211 is arranged between the two second threaded pipes 212, one of the first threaded pipe 211 and the second threaded pipe 212 is provided with an internal thread, and the other is provided with an external thread matched with the internal thread, that is, one of the first threaded pipe 211 and the second threaded pipe 212 is an external threaded pipe, and the other is an internal threaded pipe.

[0052] The two ends of the first threaded pipe 211 are respectively screwed with the two second threaded pipes 212, the thread directions on the two ends of the first threaded pipe 211 are opposite, and the middle part of the first threaded pipe 211 is provided with a driving part for driving the first threaded pipe 211 to rotate by a driving tool, so as to drive the two second threaded pipes 212 to move close to or away from each other through thread cooperation. Since the thread directions on the two ends of the first threaded pipe 211 are opposite, the two second threaded pipes 212 can be axially moved at the same time by rotating the first threaded pipe 211 through thread cooperation, and the moving directions of the two second threaded pipes 212 are opposite, so that the two second threaded pipes 212 can move close to each other to shorten the length of the telescopic rod assembly 21, or move away from each other to lengthen the length of the telescopic rod assembly 21, which is convenient and fast to adjust.

[0053] Please refer to Figure 3 and Figure 4 , the anti-overturning device 3 comprises two rectangular steel pipes 31 and two tie mechanisms 32, the rectangular steel pipes 31 are used to extend to the opposite sides of the transition pier cap beam along the width direction of the bridge erecting machine track 300, and the two tie mechanisms 32 are respectively arranged at the opposite ends of the rectangular steel pipes 31.

[0054] Further, two rectangular steel pipes 31 are arranged side by side in the bottom pre-set through hole of the fixed column 11, the tie mechanism 32 comprises an L-shaped draw hook 321, a tie seat 322, a tie threaded steel 323 and a tie nut 324, the L-shaped draw hook 321 is used for clamping the bottom of one side of the transition pier cap beam, the tie seat 322 is arranged above the two rectangular steel pipes 31 and is commonly supported by the two rectangular steel pipes 31, the first end of the tie threaded steel 323 is connected with the L-shaped draw hook 321, the second end of the tie threaded steel 323 is used for passing through the gap between the two rectangular steel pipes 31 and is arranged on the tie seat 322, the tie nut 324 is threadedly connected with the segment of the tie threaded steel 323 above the tie seat 322, the tie nut 324 is used for being screwed on the tie seat 322 and tightly fixing the tie seat 322 relative to the L-shaped draw hook 321, so that the support device 1 is tightly fixed relative to the transition pier cap beam through the two rectangular steel pipes 31, and the anti-overturning of the support device 1 in the width direction of the bridge erecting machine track 300 is realized, the anti-overturning structure is simple and efficient, convenient and fast to assemble, and has good fastening effect.

[0055] Further, the anti-overturning device 3 is provided in plurality, and the plurality of anti-overturning devices 3 are connected with the plurality of support devices 1 one by one, so that each support device 1 is reinforced and fixed by a separate anti-overturning device 3, and the stability is better.

[0056] Further, the L-shaped draw hook 321 comprises a side plate and a bottom plate arranged in an L shape, the side plate is used for abutting against the side wall of the transition pier cap beam, the bottom plate is used for abutting against the bottom wall of the transition pier cap beam, and the side plate and / or the bottom plate is provided with a raised anti-skid pattern, so that the friction between the L-shaped draw hook 321 and the transition pier cap beam is enhanced through the raised anti-skid pattern, and the fastening effect of the L-shaped draw hook 321 is improved.

[0057] Further, the L-shaped draw hook 321 is welded and fixed with the tie threaded steel 323, and the connection part of the L-shaped draw hook 321 and the tie threaded steel 323 is provided with a local reinforcing structure, which can be a diagonal reinforcing rib or a reinforcing plate connected with the L-shaped draw hook 321 and the tie threaded steel 323 respectively, so that the connection strength of the L-shaped draw hook 321 and the tie threaded steel 323 is improved through the local reinforcing structure, and the loosening is avoided.

[0058] Further, the tie seat 322 can also be composed of two rectangular pipes, which are arranged above the two rectangular steel pipes 31 and form a gap for the tie threaded steel 323 to pass through, so that the structure is simple and efficient and can be made on site.

[0059] As Figure 3As shown, the anti-overturning device 3 further comprises an adjusting sliding groove 33 arranged above the rectangular steel pipe 31 and extending along the length direction of the rectangular steel pipe 31, and the tie seat 322 is embedded in the adjusting sliding groove 33 and used for sliding and adjusting the position along the adjusting sliding groove 33, so that the spacing between the two tie mechanisms 32 adapts to the transition pier cap beam of different widths. By clamping the tie seat 322 through the adjusting sliding groove 33, not only the stability of the tie seat 322 can be further improved, but also the tie seat 322 can slide and adjust the position along the preset direction, so that the spacing between the two tie mechanisms 32 can accurately adapt to the actual width of the transition pier cap beam, and the two tie mechanisms 32 can be stably fixed on the transition pier cap beam, which has strong applicability and good stability.

[0060] As shown in the drawings, Figure 5 As a second aspect, the utility model also provides a beam slab span construction system, comprising a bridge erecting machine 400 and a bridge erecting machine track 300, and the above-mentioned bridge erecting machine track span support 100 is used to be installed on the transition pier cap beam of the non-penetrating side of the cantilever box girder, the first end of the bridge erecting machine track 300 is used to be arranged on the bridge erecting machine track span support 100, the second end of the bridge erecting machine track 300 is used to extend to the cantilever box girder of the already-penetrating side of the cantilever box girder, and the bridge erecting machine 400 is arranged on the bridge erecting machine track 300 and is used to move along the bridge erecting machine track 300.

[0061] In the beam slab span construction system, the bridge erecting machine track 300 is supported by the bridge erecting machine track span support 100, so that the installation stability of the bridge erecting machine track 300 can be ensured, the stability of the bridge erecting machine 400 is improved, the bridge erecting machine 400 can accurately move across the span to perform the precast beam erecting operation, the construction scene of erecting the full-span precast beam slab based on the single-span penetration of the cantilever box girder is met, the overall support structure is simple and efficient, and the disassembly, assembly and adjustment are convenient and fast, and a large width space is not occupied, so that the transition pier cap beam of different specifications can be better adapted, the applicability is strong, and the bridge erecting machine 400 can be used in different places.

[0062] As shown in the drawings, Figure 6 The beam slab span construction system further comprises a pre-counterforce support frame 200 arranged below the cantilever box girder wing plate of the already-penetrating side of the cantilever box girder, and a plurality of pre-counterforce support frames 200 are arranged along the length direction of the bridge erecting machine track 300, so that the cantilever box girder wing plate is supported by the pre-counterforce support frame 200, and the load of the bridge erecting machine 400 on the cantilever box girder wing plate in the operation process is avoided to be too large to cause deformation and damage of the cantilever box girder wing plate.

[0063] Further, the pre-reaction force support frame 200 comprises a support column 201 and a flat jack 202, the support column 201 is installed on the lower deck beam corresponding to the bridge erecting machine track 300, the flat jack 202 is installed on the top of the support column 201 and is used to apply a pre-reaction force upward to the cantilever box girder wing plate, the size of the pre-reaction force can be flexibly adjusted through the flat jack 202, so that the size of the pre-reaction force applied to the cantilever box girder wing plate can be adjusted in real time according to the barycentric position of the bridge erecting machine 400, so that the pre-reaction force on the bottom of the cantilever box girder wing plate can be adapted to the upper load of the cantilever box girder wing plate.

[0064] The preferred embodiments of the present application have been described above by way of example only, not for limitation, for those skilled in the art, various modifications and changes can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bridge erection machine track width bracket, characterized in that: It comprises a plurality of support devices (1) arranged at intervals along a bridge erection machine track (300), a transverse connecting device (2) provided between two adjacent support devices (1), and an anti-overturning device (3) connected to the support devices (1); The supporting device (1) comprises a fixed column (11), a lifting column (12) and a lifting jack (13); the fixed column (11) is used to be installed on the transition pier cap beam; the lifting column (12) is coaxially embedded in the inner cavity of the fixed column (11) relative to the fixed column (11) and is used to support the bridge machine track (300); the lifting jack (13) is provided between the fixed column (11) and the lifting column (12) and is used to drive the lifting column (12) to move up and down; The transverse connecting device (2) is used to connect two adjacent supporting devices (1) into a whole along the length direction of the bridge erection machine track (300); The anti-overturning device (3) is used to extend along the width direction of the bridge erection machine track (300) and is respectively fixed on the opposite sides of the transition pier cap beam.

2. The bridge erection machine track width bracket according to claim 1, characterized in that: The supporting device (1) further comprises a limiting pin (14); a first limiting hole group is provided on the side wall of the lifting column (12); the first limiting hole group comprises a plurality of first limiting holes (121) arranged at intervals along the circumference of the lifting column (12); a multi-layer second limiting hole group is provided on the side wall of the fixed column (11) at intervals along its height direction; a single-layer second limiting hole group comprises a plurality of second limiting holes (111) arranged at intervals along the circumference of the fixed column (11); the limiting pin (14) is used to be sequentially inserted into the corresponding second limiting hole (111) and the first limiting hole (121) and to limit and fix the lifting column (12) in the height direction.

3. The bridge erection machine track width bracket according to claim 2, characterized in that: The first limiting hole groups are arranged in two layers along the height direction of the lifting column (12), and the spacing between the two layers of first limiting hole groups is greater than the spacing between the two adjacent layers of second limiting hole groups.

4. The bridge erection machine track width bracket according to claim 1, characterized in that: An oil injection hole (112) is provided on the side wall of the fixed column (11), and the oil injection hole (112) is used to inject lubricating oil into the gap between the fixed column (11) and the lifting column (12).

5. The bridge erection machine track width bracket according to claim 1, characterized in that: The support device (1) further comprises a first support seat (15) provided on the bottom of the fixed column (11) and a second support seat (16) provided on the top of the lifting column (12), wherein the width of the first support seat (15) is greater than the width of the fixed column (11) and is used for being installed on the transition pier cap beam, and the width of the second support seat (16) is greater than the width of the lifting column (12) and is used for supporting the bridge erection machine track (300), and limit blocks (17) are provided on opposite sides of the second support seat (16), and the limit blocks (17) are used for forming a limit slot adapted to the bridge erection machine track (300).

6. The bridge erection machine track width bracket according to claim 1, characterized in that: Two hinged seats (18) are provided on the side wall of the fixed column (11) at intervals along the height direction, and the transverse connecting device (2) includes two telescopic rod assemblies (21) hingedly connected to the two hinged seats (18) in a one-to-one correspondence; In two adjacent support devices (1), the first end of the telescopic rod assembly (21) is hinged to the upper hinge seat (18) in one of the support devices (1), and the second end of the telescopic rod assembly (21) is hinged to the lower hinge seat (18) in the other support device (1), so that the telescopic rod assembly (21) forms a diagonal bracing structure between the two adjacent support devices (1), and the two telescopic rod assemblies (21) are arranged crosswise with each other.

7. The bridge erection machine track width bracket according to claim 6, characterized in that: The telescopic rod assembly (21) comprises a first threaded tube (211) and two second threaded tubes (212) arranged coaxially, the first threaded tube (211) being arranged between the two second threaded tubes (212), one of the first threaded tube (211) and the second threaded tube (212) being provided with an internal thread, and the other being provided with an external thread matching the internal thread; The two ends of the first threaded tube (211) are respectively threadedly connected to the two second threaded tubes (212), and the threads on the two ends of the first threaded tube (211) are in opposite directions. A driving part is provided in the middle of the first threaded tube (211), and the driving part is used for driving a driving tool to drive the first threaded tube (211) to rotate, thereby driving the two second threaded tubes (212) to move closer to or away from each other through threaded matching.

8. The bridge erection machine track width bracket according to claim 1, characterized in that: The anti-overturning device (3) comprises two rectangular steel pipes (31) and two tie mechanisms (32), wherein the rectangular steel pipes (31) are used to extend along the width direction of the bridge erection machine track (300) to opposite sides of the transition pier cap beam, and the two tie mechanisms (32) are respectively arranged at opposite ends of the rectangular steel pipe (31); Two rectangular steel pipes (31) are arranged side by side through the bottom of the fixed column (11), and the tie mechanism (32) includes an L-shaped hook (321), a tie seat (322), a tie thread steel (323) and a tie nut (324). The L-shaped hook (321) is used to clamp the bottom of one side of the transition pier cap beam, and the tie seat (322) is placed above the rectangular steel pipe (31). The first end of the tie thread steel (323) is connected to the L-shaped hook (321), and the second end of the tie thread steel (323) is used to pass through the gap between the two rectangular steel pipes (31) and be arranged on the tie seat (322). The tie nut (324) is threadedly connected to the segment on the tie thread steel (323) that passes through the tie seat (322) and is used to tighten and fix the tie seat (322) relative to the L-shaped hook (321).

9. The bridge erection machine track width bracket according to claim 8, characterized in that: The anti-overturning device (3) also includes an adjustment slot (33) arranged above the rectangular steel tube (31) and extending along the length direction of the rectangular steel tube (31); the tie seat (322) is embedded in the adjustment slot (33) and is used to slide and adjust the position along the adjustment slot (33) so that the spacing between the two tie mechanisms (32) can adapt to transition pier cap beams of different widths.

10. A beam-slab span construction system, comprising a bridge erection machine (400) and a bridge erection machine track (300), characterized in that: The beam-slab span construction system also includes a bridge-erecting machine track width-crossing bracket as described in any one of claims 1 to 9, the bridge-erecting machine track width-crossing bracket is used to be installed on the transition pier cap beam on the side where the cantilever box beam is not penetrated, the first end of the bridge-erecting machine track (300) is used to be set on the bridge-erecting machine track width-crossing bracket, the second end of the bridge-erecting machine track (300) is used to extend to the cantilever box beam on the side where the cantilever box beam has been penetrated, and the bridge-erecting machine (400) is set on the bridge-erecting machine track (300) and is used to move along the bridge-erecting machine track (300).

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