CN212316706U

CN212316706U - Bridge erecting machine

Info

Publication number: CN212316706U
Application number: CN202020842826.3U
Authority: CN
Inventors: 刘长卿; 代华; 耿庆祥; 黄洪亮; 李宾; 宋满荣; 吴俊�; 胡卓航; 王坤
Original assignee: China Railway Beijing Engineering Group Co Ltd; Fifth Engineering Co Ltd of China Railway Beijing Engineering Group Co Ltd
Current assignee: China Railway Beijing Engineering Group Co Ltd; Fifth Engineering Co Ltd of China Railway Beijing Engineering Group Co Ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-01-08
Anticipated expiration: 2030-05-19
Also published as: JP3238751U; WO2021232644A1

Abstract

The utility model belongs to bridge erection field relates to a bridging machine. The utility model provides a bridge girder erection machine, includes girder and strutting arrangement, strutting arrangement includes end strutting arrangement and limit strutting arrangement, limit strutting arrangement includes the limit landing leg, the limit landing leg with the girder is connected, the limit landing leg is used for supporting from the top surface of limit pier the girder, end strutting arrangement with the at least one end of girder is connected, end strutting arrangement is used for following ground and supports the girder. The utility model provides a bridge girder erection machine that prior art provided need the vehicle to drive to the technical problem on middle pier next door, has reached and has need not the vehicle to drive the other technological effect of carrying out hoist and mount again of middle pier.

Description

Bridge erecting machine

Technical Field

The utility model belongs to bridge erection field particularly, relates to a bridge girder erection machine.

Background

In recent years, with the rapid development of social economy and modern construction, bridge construction has also been rapidly developed. Meanwhile, the segment prefabrication and assembly technology in bridge construction is greatly popularized, the segment assembly bridge technology can not be developed without updating and applying segment assembly equipment, and the segment assembly bridge girder erection machine is one of the most widely applied segment assembly equipment. The construction process suitable for the segment assembling bridge girder erection machine comprises cantilever assembling and span-by-span assembling.

The balanced cantilever assembly is a common construction method for prefabricating and assembling bridge sections, and the principle of the method is that T-shaped cantilevers are formed by symmetrically assembling sections on two sides from a pier top section of a pier top, and then span-middle closure is carried out between every two adjacent cantilevers to form a multi-span continuous bridge. At present, when a segment assembling bridge girder erection machine carries out cantilever assembling on a continuous beam, after 1T-shaped cantilever is symmetrically assembled in a suspension mode, the bridge girder erection machine needs to stride and be in place and anchor a middle supporting leg on a pier top section box girder so as to facilitate the suspension assembling of the next T-shaped cantilever and further to span and close a dragon. When the three-span continuous beam is segmented and assembled, the construction method has low efficiency, and the hole passing operation procedure of the bridge girder erection machine is complicated and has poor safety.

When the bridge segment is assembled, the small crane handle arranged at the top of the main beam needs to be installed after the beam segment is lifted from the lower part of the beam segment, and in the actual construction process, because of the limitation of construction site conditions such as river crossing and the like below the beam segment, the beam transporting vehicle is difficult to transport to the lower part of the beam segment, and the crane cannot feed the beam below or laterally.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an bridging machine, the bridging machine that can solve prior art and provide need the vehicle to go to the technical problem on middle pier next door.

In a first aspect, the utility model provides a bridge girder erection machine, including girder and strutting arrangement, strutting arrangement includes end strutting arrangement and limit strutting arrangement, limit strutting arrangement includes the limit landing leg, the limit landing leg with the girder is connected, the limit landing leg is used for supporting from the top surface of limit pier the girder, end strutting arrangement with the at least one end of girder is connected, end strutting arrangement is used for following ground and supports the girder.

The utility model of this aspect has the beneficial effects that:

through setting up end strutting arrangement and limit strutting arrangement, can utilize the limit strutting arrangement that begins from the top surface of limit pier and the end strutting arrangement that begins from the ground to the bearing structure of the regional simple beam that forms of tip of girder, do benefit to the vehicle of delivery segment and directly hoist after opening the one end position of girder, need not the vehicle and open and hoist by the middle pier again, the apparent reduction the restriction effect of factors such as topography, soil property to hoist segment vehicle running position. In other words, the method is also beneficial to reducing the operations of leveling and reinforcing the soil at the river side in the bridge construction process and reducing the construction cost.

In an alternative embodiment, the end supporting device comprises a plurality of upright single bodies, and the upright single bodies are connected with each other through a horizontal supporting unit.

In an optional embodiment, the horizontal supporting units comprise a horizontal supporting rod and a pair of inclined supporting rods crossing in an X shape, the inclined supporting rods and the horizontal supporting rods are both connected with a supporting connecting piece, each horizontal supporting unit is also connected with each other through the supporting connecting piece, and each horizontal supporting unit is also connected with the stand column monomer through the supporting connecting piece.

In optional embodiment, still include the gyration overhead traveling crane, the removal of gyration overhead traveling crane sets up on the girder, the gyration overhead traveling crane includes walking subassembly and lifting unit, lifting unit with walking subassembly relative rotation sets up, lifting unit for walking subassembly pivoted axis is vertical axis.

In an optional implementation mode, the bridge further comprises a temporary support, the temporary support supports the middle of the main beam, and the temporary support is used for being arranged beside the middle bridge pier.

In an alternative embodiment, the temporary stand includes a stand body and a deformable support assembly mounted on top of the stand body.

In an optional embodiment, the deformation supporting component includes a pivot assembly, the pivot assembly includes an upper pivot base and a lower pivot base, the upper pivot base and the lower pivot base are pivoted, the upper pivot base is used for being connected with the main beam, and the lower pivot base is used for being connected with the bracket main body.

In an optional embodiment, the deformation support assembly further comprises an elastic deformation member, the elastic deformation member is located at the bottom of the deformation support assembly, and the elastic deformation member is connected with the bracket main body.

In an alternative embodiment, the side legs include a leg body and an inclined leg, one end of the inclined leg is connected to a middle lower portion of the leg body, and the other end of the inclined leg is connected to the main beam.

In an optional embodiment, the bridge pier further comprises a pier top supporting leg, the upper end of the pier top supporting leg is connected with the middle part of the main beam, and the lower end of the pier top supporting leg is connected with the middle pier.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a bridge girder erection machine according to a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an end support apparatus according to a first embodiment;

FIG. 3 is a schematic structural view of a temporary stand according to the first embodiment;

FIG. 4 is a schematic structural diagram of an edge leg according to the first embodiment;

FIG. 5 is a schematic view of a turning crown block hoisting a pier top section from a first end car of a main girder in a method of erecting a bridge using the bridge erecting machine of the embodiment;

fig. 6 is a schematic view of the installation of a first pier top leg at a pier top section of a first intermediate pier using the method of the first embodiment;

FIG. 7 is a schematic view showing the front revolving crown block hoisting and moving the first pier top section of the first intermediate pier to the direction of the first intermediate pier in the major range in the method according to the first embodiment;

fig. 8 is a schematic view showing a small mileage direction in which a rear slewing crown block hoists and moves a first pier top intermediate section of a first intermediate pier to the first intermediate pier in the method of the first embodiment;

figure 9 is a schematic view of the hoisting of the first pier-top segment of the second intermediate pier using the method of the first embodiment;

figure 10 is a schematic view of the hoisting of the second coping section of the first intermediate pier using the method of the first embodiment;

FIG. 11 is a schematic illustration of a mid-span closure in a method using embodiment one;

FIG. 12 is a schematic illustration of the assembly of side pier segments using the method of the first embodiment.

Icon: 21-column monomer; 22-diagonal bracing bars; 23-horizontal support bar; 24-a support connection; 31-a stent body; 32-a pivoting assembly; 33-an elastically deformable member; 41-a leg body; 42-oblique legs;

101-a main beam; 102-a front leg; 103-a first pier top leg; 104-a second pier top leg; 105-rear leg; 106-end support means; 107-front revolving crown block; 108-turning the crown block backwards; 109-a temporary scaffold; 110-a bracket; 111-multidirectional regulating oil top; 112-a first intermediate pier; 113-a second intermediate pier; 114-pier top segment; 116-a first pier; 117-second pier; 118-pier top segment; 119-side pier segment.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "first type", "second type", "third type", etc. are used for distinction only, and are uniformly described with respect to the same type of component or feature, meaning that the number of the component or feature may be plural, but it is not denied that the number of the component or feature may be one.

Furthermore, the terms "horizontal", "vertical", "suspended", and the like do not imply that the components are required to be absolutely horizontal or suspended, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The first embodiment is as follows:

as shown in fig. 1, the present embodiment provides a bridge erecting machine, which includes a main beam 101 and a supporting device, wherein the supporting device includes an end supporting device 106 and a side supporting device, the side supporting device includes a side leg, the side leg is connected to the main beam 101, the side leg is used for supporting the main beam 101 from the top surface of a side pier, the end supporting device 106 is connected to at least one end of the main beam 101, and the end supporting device 106 is used for supporting the main beam 101 from the ground.

By arranging the end supporting devices 106 and the side supporting devices, the supporting structure of the simply-supported beam can be formed in the end area of the main beam 101 by the side supporting devices starting from the top surface of the side pier and the end supporting devices 106 starting from the ground, the simple-supported beam is beneficial to directly hoisting a vehicle carrying a segment after the vehicle is driven to one end part of the main beam 101, the vehicle is not required to be driven to the side of the middle pier for hoisting, and the restriction effect of factors such as terrain and soil quality on the running position of the vehicle of the hoisting segment is remarkably reduced. In other words, the method is also beneficial to reducing the operations of leveling and reinforcing the soil at the river side in the bridge construction process and reducing the construction cost.

As shown in fig. 2, in an alternative embodiment, the end supporting device 106 includes a plurality of upright single bodies 21, and the upright single bodies 21 are connected to each other through a horizontal supporting unit.

The combination of the plurality of upright single bodies 21 and the horizontal supporting units can be suitable for occasions with longer supporting heights, and meanwhile, the combination mode can also obviously improve the rigidity, so that the supporting device does not need excessive materials, and the construction cost can also be reduced.

In an alternative embodiment, the horizontal supporting unit comprises a horizontal supporting rod 23 and a pair of inclined supporting rods 22 crossing in an X shape, the inclined supporting rods 22 and the horizontal supporting rod 23 are both connected with supporting connecting pieces 24, the horizontal supporting units are also connected with each other through the supporting connecting pieces 24, and the horizontal supporting units are also connected with the upright single body 21 through the supporting connecting pieces 24.

The horizontal support rods 23 and the pair of inclined support rods 22 are arranged and connected with the support connecting pieces 24, the support connecting pieces 24 are connected with the stand column single bodies 21 to support the stand column single bodies mutually, a plurality of mutually connected triangular structures are formed, the stand column single bodies 21 are supported by the combination of the triangular support structures, the rigidity of the end support device 106 can be obviously improved, and one end of the bridge girder erection machine is guaranteed to have enough rigidity and strength to hoist a section.

In an optional embodiment, the main beam 101 further comprises a revolving crown block, the revolving crown block is movably arranged on the main beam 101, the revolving crown block comprises a walking assembly and a lifting assembly, the lifting assembly and the walking assembly are arranged in a relative rotation mode, and the lifting assembly is a vertical axis relative to the axis of the walking assembly in rotation.

Through setting up the gyration overhead traveling crane, can will follow the segment that carries on the vehicle of opening into with the roughly the same direction of bridge length direction and hang, it is rotatory to transport after targetting in place, thereby improved the flexibility ratio of the vehicle of sailing into in the side, simultaneously, transport the segment with the gesture that its length direction and girder 101 length direction are the same, also be favorable to reducing the width of segment when by overhead traveling crane horizontal transport, avoid its and play the part of supporting role to girder 101 to collide, the convenience of horizontal transport has been improved.

As shown in fig. 3, in an alternative embodiment, a temporary support 109 is further included, the temporary support 109 supports the middle portion of the girder 101, and the temporary support 109 is configured to be disposed beside the middle pier.

Through the arrangement of the temporary support 109, the rigidity of the middle part of the main beam 101 can be improved, and particularly, before the first pier top section 118 of the middle pier is installed, the main beam 101 can be prevented from being excessively deformed, so that the pier top section 118 can be smoothly hoisted and transported in place.

In an alternative embodiment, the temporary stand 109 includes a stand body 31 and a deformable support assembly mounted on top of the stand body 31.

Through setting up the deformation supporting component, can adapt to girder 101 in the natural inflection of middle part to do benefit to the smooth of buildding of interim support 109.

In an alternative embodiment, the deformation supporting component includes a pivoting component 32, and the pivoting component 32 includes an upper pivoting seat and a lower pivoting seat, the upper pivoting seat and the lower pivoting seat are pivoted, the upper pivoting seat is used for connecting with the main beam 101, and the lower pivoting seat is used for connecting with the bracket main body 31.

When the middle part of the main beam 101 is deflected, the part of the main beam 101 connected with the deformation supporting component is not necessarily kept absolutely horizontal, and the arrangement of the pivoting component 32 can adapt to slight change of angle, thereby avoiding the difficulty of connection operation caused by the non-parallel of the pivoting seat and the main beam 101 when the pivoting seat is connected with the main beam.

In an alternative embodiment, the deformation support assembly further comprises an elastic deformation member 33, the elastic deformation member 33 is located at the bottom of the deformation support assembly, and the elastic deformation member 33 is connected with the bracket main body 31. Specifically, the elastic deformation member 33 may be an elastic pad.

By providing the elastic deformation member 33 in the deformation support assembly, the deformation support assembly can have a slight floating space in the height direction, and the connection between the temporary support 109 and the main beam 101 is facilitated when the temporary support is slightly lower than the main beam 101.

As shown in fig. 4, in an alternative embodiment, the side leg includes a leg body 41 and an inclined leg 42, one end of the inclined leg 42 is connected to a middle lower portion of the leg body 41, and the other end of the inclined leg 42 is connected to the main beam 101. Specifically, in the present embodiment, there are two side legs, one front leg 102 and one rear leg 105.

By providing the oblique legs 42, not only can the beam sections above the side legs be directly supported, but also the beam sections obliquely above can be supported, so that the rigidity of the plurality of beam sections is improved, and the main beam 101 can be kept horizontal as much as possible.

In an alternative embodiment, the pier top supporting leg is further included, the upper end of the pier top supporting leg is connected with the middle part of the main beam 101, and the lower end of the pier top supporting leg is connected with the middle pier. Specifically, in the present embodiment, the pier top legs include a first pier top leg 103 and a second pier top leg 104.

After the temporary support 109 is removed, the pier top support legs can be connected with the pier top sections 118 at the top end of the middle pier to replace the temporary support 109 to support the main beam 101, and meanwhile, the size of the pier top support legs on the width of the main beam 101 is smaller than that of the temporary support 109, so that the section can be hoisted by the revolving crown block to pass through the middle pier.

Specifically, taking the case where there are two intermediate piers as an example, the intermediate pier closer to the first end of the main beam 101 is defined as a first intermediate pier 112, the intermediate pier farther from the first end of the main beam 101 is defined as a second intermediate pier 113, the direction away from the first end is defined as a large-mileage direction, the direction close to the first end is defined as a small-mileage direction, the distance from the intermediate pier is from near to far, the pier top sections 114 connected to each intermediate pier are defined as a first pier top section 114 and a second pier top section 114 in sequence, and so on.

After the preparation work is finished, the method for erecting the bridge mainly comprises four steps:

A. pier top segment 118 installation; B. forming a T-shaped cantilever; C. closing the middle span; D. and constructing side pier sections.

As shown in fig. 5, the preparation work includes erecting a temporary support 109 beside two middle piers for supporting the middle of the girder 101; rear legs 105 are provided on first pier 116; a front support leg 102 is arranged on the second side pier 117; erecting a main beam 101; a front turning crown block 107 and a rear turning crown block 108 are placed on the main beam 101, and an end support device 106 is provided at a first end of the main beam 101. Wherein the distance between end support 106 and first pier 116 should facilitate the entry and exit of the transport segment vehicle.

As shown in fig. 5-7, the pier top segment 118 is installed by the following steps:

the vehicle transports the pier top segment 118 segment to the bridge girder erection tail, the front revolving crown block 107 and the rear revolving crown block 108 are both moved to the first end, i.e. the left end in the figure, of the bridge girder erection, and the front revolving crown block 107 lifts the pier top segment 118.

The front revolving crown block 107 suspends the pier top segment 118 to the vicinity of the first intermediate pier 112, rotates by 90 °, places the pier top segment 118, and anchors the pier top segment 118 to the first intermediate pier 112.

The first pier top leg 103 is installed on the pier top segment 118 of the first intermediate pier 112 with the first pier top leg 103 supporting the girder 101, and then the temporary brace 109 beside the first intermediate pier 112 is removed.

The pier top segment 118 of the second intermediate pier 113 is then installed, the second pier top leg 104 is installed, and the temporary brace 109 is removed from the second intermediate pier 113 adjacent the intermediate pier.

As shown in fig. 7-11, the process of forming the T-shaped cantilever is as follows:

as shown in fig. 7, the front revolving crown block 107 lifts the first inter-pier segment 114 of the first intermediate pier 112 in the major-range direction, moves the first inter-pier segment 114 to the pier top segment 118 of the first intermediate pier 112 in the major-range direction, and rotates the first inter-pier segment 114 in the major-range direction by 90 ° in a plane;

as shown in fig. 8, the rear revolving crown block 108 lifts the first inter-pier segment 114 of the first intermediate pier 112 in the small-mileage direction, moves the first inter-pier segment 114 to the pier top segment 118 of the first intermediate pier 112 in the small-mileage direction, and rotates the first inter-pier segment 114 in the small-mileage direction by 90 ° in a plane;

splicing, temporarily and permanently prestressing and tensioning the first pier top inter-section 114 and the pier top section 118 in the large mileage direction and the small mileage direction of the first intermediate pier 112;

as shown in fig. 9, then, hoisting, gluing, temporarily and permanently prestressing tensioning the first pier top inter-segment 114 in the large-mileage direction and the small-mileage direction of the second intermediate pier 113 is performed, and simultaneously, prestressed pipe grouting is performed on the first pier top inter-segment 114 of the first intermediate pier 112;

as shown in fig. 10, the second pier top intermediate sections 114 on both sides of the first intermediate pier 112 are glued, temporarily and permanently prestressed and tensioned, and the first pier top intermediate sections 114 on both sides of the second intermediate pier 113 are prestressed pipe grouted;

assembling pier top sections 114 of the T-shaped cantilevers of the first intermediate pier 112 and the second intermediate pier 113 in a circulating mode according to the steps.

As shown in FIG. 11, the mid-span wet joint construction is performed after the mid-span closure, i.e. the double T-shaped cantilever sections are spliced. The construction of the mid-span closure section is the key part of the whole box girder construction, the concrete of the closure section can be poured in the shortest time period of one day at the lowest temperature, the time period with smaller temperature difference change can be preferably selected, the pouring is completed in the shortest time as possible, the covering and the maintenance are carried out in time, the prestress is timely tensioned after the concrete reaches the strength and the elastic modulus required by the design, and the destructive cracks of the concrete of the closure section, such as temperature, shrinkage and the like, are reduced or avoided.

As shown in fig. 12, after the side pier segment construction, that is, the mid-span closure is completed, the ninth pier top segment 114 at the end of the double T-shaped cantilever is spliced and prestressed tensioned, the bracket 110 is erected at the side facing the first middle pier 112 near the first side pier 116 and at the side facing the second middle pier 113 near the second side pier 117, the multidirectional adjusting oil cap 111 is arranged on the bracket 110, and then the first side pier segment 119 and the second side pier segment 117 are sequentially placed on the multidirectional adjusting oil cap 111 of the bracket by the front revolving crown block 107 and the rear revolving crown block 108, wherein the first side pier segment is the side pier segment 119 farther from the middle pier, and the second side pier segment 117 is the side pier segment 119 closer to the middle pier. After the fine adjustment is completed, the front revolving crown block 107 and the rear revolving crown block 108 are used for respectively splicing the first side pier segment and the second side pier 117 segment at the two ends, and prestress tensioning is carried out. And finally, gluing the glued first side pier segment and the second side pier 117 segment with the T-shaped structure, and performing prestress tensioning.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; for example:

in an exemplary embodiment, there are two intermediate piers, and correspondingly, there are two pier top legs, at most two, and two temporary supports, at most two. In practice there may be three or four or more intermediate piers. Pier top supporting legs can be arranged according to the actual number of the middle piers.

In an exemplary case, there are two side piers, and actually there may be only one side pier, and as long as the end support device is disposed at one side of one side pier, the end support device may also support the main girder together, so as to realize hoisting of the segment.

Such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A bridge girder erection machine comprises a main girder (101) and a supporting device, wherein the supporting device comprises an end supporting device (106) and a side supporting device, the side supporting device comprises a side supporting leg, the side supporting leg is connected with the main girder (101), the side supporting leg is used for supporting the main girder (101) from the top surface of a side pier, the end supporting device (106) is connected with at least one end of the main girder (101), and the end supporting device (106) is used for supporting the main girder (101) from the ground.

2. A bridging machine according to claim 1, wherein the end support device (106) comprises a plurality of upright single bodies (21), and each upright single body (21) is connected with each other through a horizontal support unit.

3. The bridge girder erection machine according to claim 2, wherein the horizontal support unit comprises a horizontal support bar (23) and a pair of crossed diagonal support bars (22) in an X shape, the diagonal support bars (22) and the horizontal support bar (23) are both connected with a support connector (24), each horizontal support unit is also connected with the upright single body (21) through the support connector (24), and each horizontal support unit is also connected with the upright single body (21) through the support connector (24).

4. The bridge girder erection machine according to claim 1, further comprising a revolving crown block movably disposed on the main girder (101), wherein the revolving crown block comprises a traveling component and a lifting component, the lifting component is rotatably disposed relative to the traveling component, and the lifting component is a vertical axis relative to an axis of rotation of the traveling component.

5. A bridge girder erection machine according to any one of claims 1-4, further comprising a temporary support (109), wherein the temporary support (109) supports the middle part of the girder (101), and the temporary support (109) is adapted to be arranged beside a middle pier.

6. A bridge girder erection machine according to claim 5, wherein the temporary support (109) comprises a support body (31) and a deformation support assembly mounted on top of the support body (31).

7. A bridge erecting machine according to claim 6, wherein the deformation supporting assembly comprises a pivoting assembly (32), the pivoting assembly (32) comprises an upper pivoting seat and a lower pivoting seat, the upper pivoting seat and the lower pivoting seat are pivoted, the upper pivoting seat is used for being connected with the main beam (101), and the lower pivoting seat is used for being connected with the bracket main body (31).

8. A bridge erecting machine according to claim 6 or 7, wherein said deformation support assembly further comprises an elastically deforming piece (33), said elastically deforming piece (33) being located at the bottom of said deformation support assembly, said elastically deforming piece (33) being connected with said bracket main body (31).

9. A bridging machine according to any one of claims 1 to 4, characterized in that the side legs comprise a leg body (41) and an inclined leg (42), one end of the inclined leg (42) is connected to the middle lower part of the leg body (41), and the other end of the inclined leg (42) is connected to the main beam (101).

10. A bridge girder erection machine according to any one of claims 1-4 or 6, further comprising a pier top leg, the upper end of which is connected with the middle part of the main girder (101), and the lower end of which is connected with a middle pier.