Bridge erecting machine with single-line and double-line bridging function

Abstract

The utility model provides a bridge erecting machine with a single-line and double-line bridge erecting function. The bridge erecting machine with the single-line and double-line bridge erecting function comprises a machine arm, a first column, a second column and a third column, wherein the first column, the second column and the third column are arranged in the longitudinal direction of the machine arm and used for supporting the machine arm to move. The column II comprises two groups of first walking parts supported on a bridge floor, two groups of first double-line mounting parts and two groups of first single-line mounting parts positioned between the two groups of first double-line mounting parts; the third column comprises two sets of second walking parts used for being supported on the bridge floor, two sets of second double-line installation parts and two sets of second single-line installation parts located between the two sets of second double-line installation parts. When the bridge girder erection machine is switched from double-line box girder erection to single-line box girder erection, each group of first walking parts is switched from the first double-line mounting part to the first single-line mounting part, and each group of second walking parts is switched from the second double-line mounting part to the second single-line mounting part, so that the bridge girder erection machine can adapt to various types of box girders.

Description

Technical Field

[0001] This application relates to the field of construction machinery and equipment technology, and in particular to a bridge erecting machine with single and double line bridge erecting functions. Background Technology

[0002] A bridge erecting machine is a common piece of equipment used to transport bridge beams and place them on pre-designated bridge piers. A bridge erecting machine consists of a boom and multiple supports under the main beam. After the multiple supports are supported on the piers at the bridge abutment and downstream of the bridge abutment, the crane on the boom places the box girder on the pier at the edge of the bridge abutment and the pier downstream of the bridge abutment to complete the erection of the box girder.

[0003] With the increasing scale of construction and the growing complexity of the terrain, bridge erection using bridge erecting machines often requires the use of both double-track and single-track precast box girders. Double-track precast box girders are larger and more substantial than single-track ones. Therefore, the support positions of the bridge erecting machine's supports on the bridge deck must be matched to the type of box girder to prevent the machine from tipping over. Currently, existing bridge erecting machines are only compatible with either double-track or single-track precast box girders. When switching between box girder types in actual construction, a different bridge erecting machine is required. For example, when switching from double-track to single-track precast box girders, the machine adapted for double-track precast box girders must first be moved out of the bridgehead position, and the machine adapted for single-track precast box girders must be moved into the bridgehead and erected on the bridgehead and downstream piers before the subsequent single-track precast box girder erection can proceed. In bridge construction, switching between box girders involves a complicated and time-consuming process of using a bridge erecting machine that is compatible with the box girder type, which affects construction efficiency. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a bridge erecting machine with single and double line bridge erection functions.

[0005] This application provides a bridge erecting machine with single and double line bridge erecting functions, including a machine arm and a first column, a second column and a third column arranged along the longitudinal direction of the machine arm to support the movement of the machine arm;

[0006] The second column includes two sets of first traveling sections, two sets of first double-line mounting sections, and two sets of first single-line mounting sections located between the two sets of first double-line mounting sections for support on the bridge deck; the third column includes two sets of second traveling sections, two sets of second double-line mounting sections, and two sets of second single-line mounting sections located between the two sets of second double-line mounting sections for support on the bridge deck.

[0007] When the bridge erecting machine switches from erecting double-track box girders to erecting single-track box girders, the first traveling section of each group switches from the first double-track mounting section to the first single-track mounting section, and the second traveling section of each group switches from the second double-track mounting section to the second single-track mounting section.

[0008] Optionally, the second column further includes a first frame body, one end of which is connected to the machine arm, and the other end is provided with two sets of the first double-line mounting parts and two sets of the first single-line mounting parts;

[0009] And / or, the No. 3 column also includes a second frame body, one end of which is connected to the machine arm, and the other end is provided with two sets of the second double-line mounting parts and two sets of the second single-line mounting parts.

[0010] Optionally, the first frame body includes an upper crossbeam, a connecting beam, and a lower crossbeam;

[0011] The upper crossbeam is slidably connected to the arm along the longitudinal direction of the arm, the lower crossbeam is disposed below the upper crossbeam, and the connecting beam connects the upper crossbeam and the lower crossbeam.

[0012] The first double-line mounting part and the first single-line mounting part are disposed on the lower crossbeam.

[0013] Optionally, each set of the first double-line mounting parts includes two first double-line seats, and the two first double-line seats are symmetrically arranged on both sides of the lower crossbeam along the longitudinal direction of the arm.

[0014] Each group of first single-line mounting parts includes two first single-line seats, which are symmetrically arranged on both sides of the lower crossbeam along the longitudinal direction of the arm.

[0015] Each group of the first traveling section includes two first rollers, which can be correspondingly mounted on two symmetrical first double-wire seats or correspondingly mounted on two symmetrical first single-wire seats.

[0016] Optionally, the lower crossbeam includes two sub-crossbeams, which are spaced apart along the longitudinal direction of the boom, and both sub-crossbeams are connected to the connecting beam.

[0017] Each group of first double-line mounting parts also includes two second double-line seats, which are symmetrically arranged on one side of the two sub-beams facing each other. Each group of first single-line mounting parts also includes two second single-line seats, which are symmetrically arranged on one side of the two sub-beams facing each other.

[0018] Each set of the first traveling section also includes a second roller, which can be installed between two symmetrical second double-wire seats or between two symmetrical second single-wire seats.

[0019] Optionally, each group of the second traveling section includes a roller member connected to the second double-line mounting section or the second single-line mounting section. The two roller members support the second frame body so that the second frame body can move relative to the bridge deck via the roller members.

[0020] Optionally, the second traveling section may further include a synchronizer assembly, a drive unit, and two steering structures;

[0021] Two steering structures are mounted on two roller components in a one-to-one correspondence. The roller components can be rotatably connected to the second double-line mounting part or the second single-line mounting part through the steering structure. The driving component is disposed on the second frame body and connected to any one of the steering structures. The two steering structures are interconnected through the synchronization rod assembly so that the driving component drives multiple steering structures to rotate in the same direction and at the same angle.

[0022] Optionally, when the roller component is installed on the second single-line mounting part, the synchronizing rod assembly includes a first synchronizing rod, the two ends of which are rotatably connected to the steering structure on the two roller components;

[0023] When the roller component is installed on the second double-line mounting part, the synchronizing rod assembly includes a second synchronizing rod and a third synchronizing rod connected to both ends of the second synchronizing rod, and each third synchronizing rod is rotatably connected to the steering structure on one of the roller components.

[0024] Optionally, the second frame body is provided with a rotating mechanism, which is rotatably connected to the machine arm. The rotating mechanism drives the second frame body to switch between a flipped position that fits against the lower side of the machine arm and a working position that is perpendicular to the machine arm.

[0025] The technical solution provided in this application has the following advantages compared with the prior art:

[0026] This application provides a bridge erecting machine with single and double track bridge erection functions. The bridge erecting machine includes a boom and three columns arranged longitudinally along the boom to support its movement. The second column includes two sets of first traveling sections, two sets of first double track mounting sections, and two sets of first single track mounting sections located between the two sets of first double track mounting sections. The third column includes two sets of second traveling sections, two sets of second double track mounting sections, and two sets of second single track mounting sections located between the two sets of second double track mounting sections. When the bridge erecting machine switches from erecting double-track box girders to erecting single-track box girders, each set of first traveling sections switches from the first double track mounting sections to the first single track mounting sections, and each set of second traveling sections switches from the second double track mounting sections to the second single track mounting sections. By switching between the first traveling section and the first double-track installation section, column No. 2 can be adapted to both double-track and single-track box girder conditions. Similarly, by switching between the second traveling section and the second double-track and second single-track installation sections, column No. 3 can be adapted to both single-track and double-track box girder conditions. When the bridge erecting machine switches between transporting double-track and single-track box girders, it remains at the bridgehead position, and the installation positions of the first and second traveling sections are switched accordingly, allowing columns No. 2 and No. 3 to be adapted to both double-track and single-track box girders. This eliminates the need to change the bridge erecting machine at the bridgehead, enabling the erection of different types of box girders, reducing the construction steps required when switching between box girder types, and improving the efficiency of bridge erection. Only one bridge erecting machine is needed to meet the needs of erecting multiple box girders, avoiding the increased construction costs associated with multiple machines and saving construction costs for bridge erecting machines with single and double-track erection capabilities. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a side view of the bridge erecting machine with single and double line bridge erecting functions described in the embodiments of this application;

[0030] Figure 2 This is a schematic diagram of the structure of column No. 1 as described in the embodiment of this application;

[0031] Figure 3 This is one of the structural schematic diagrams of column No. 2 described in the embodiments of this application;

[0032] Figure 4 This is the second structural schematic diagram of column No. 2 as described in the embodiments of this application;

[0033] Figure 5 This is one of the structural schematic diagrams of column No. 3 described in the embodiments of this application;

[0034] Figure 6 This is the second structural schematic diagram of column No. 3 described in the embodiments of this application;

[0035] Figure 7 This is a front view of column No. 3 as described in the embodiment of this application;

[0036] Figure 8 This is a side view of column No. 3 in the working position according to an embodiment of this application;

[0037] Figure 9 This is a side view of the No. 3 column in the flipped position as described in the embodiment of this application.

[0038] The components are as follows: 1. Arm; 2. Column No. 1; 21. Sliding drive device; 211. Sliding connecting seat; 212. Sliding motor; 22. Support frame; 3. Column No. 2; 31. First frame body; 311. Upper crossbeam; 312. Connecting beam; 313. Lower crossbeam; 314. Sub-crossbeam; 32. First traveling section; 321. First roller; 322. Second roller; 33. First double-line mounting section; 34. First single-line mounting section; 35. Second double-line seat; 36. Second single-line seat; 4. Column No. 3; 41. Second frame body; 42. Second traveling section; 43. Second double-line mounting section; 44. Second single-line mounting section; 451. Synchronizing rod assembly; 452. Drive component; 453. Steering structure; 46. Rotating mechanism. Detailed Implementation

[0039] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0041] Reference Figures 1 to 9As shown, this application embodiment provides a bridge erecting machine with single and double line bridge erection functions, including a boom 1 and a first column 2, a second column 3, and a third column 4 arranged longitudinally along the boom 1 for supporting the movement of the boom 1; the second column 3 includes two sets of first traveling parts 32 for supporting on the bridge deck, two sets of first double line mounting parts 33, and two sets of first single line mounting parts 34 located between the two sets of first double line mounting parts 33; the third column 4 includes two sets of second traveling parts 42 for supporting on the bridge deck, two sets of second double line mounting parts 43, and two sets of second single line mounting parts 44 located between the two sets of second double line mounting parts 43; when the bridge erecting machine switches from erecting double line box girders to erecting single line box girders, each set of first traveling parts 32 switches from the first double line mounting parts 33 to the first single line mounting parts 34, and each set of second traveling parts 42 switches from the second double line mounting parts 43 to the second single line mounting parts 44.

[0042] Specifically, during bridge construction, there are multiple piers arranged at intervals at the construction site. Box girders are erected on two adjacent piers to form the bridge structure. Multiple box girders are erected sequentially on two adjacent piers and connected to each other to complete the overall construction of the bridge. The bridgehead is located downstream of the direction in which the multiple box girders are arranged.

[0043] The pier at the edge of the bridgehead is the first pier. Among the multiple piers arranged at intervals, the pier adjacent to the downstream pier at the bridgehead is the second pier. After the bridge erecting machine is erected between the first and second piers, the box girder is transported between the two piers by the machine arm to complete the installation of the box girder.

[0044] The aforementioned boom 1 is typically kept parallel to the bridge deck at the bridgehead during use. The extension direction of boom 1 is its longitudinal direction, and the horizontal direction perpendicular to its extension direction is its transverse direction. Columns 2, 3, and 4 support boom 1 on the bridge deck. Columns 2, 3, and 4 are arranged at intervals along the longitudinal direction of boom 1, with the opposite ends of boom 1 being the front and rear ends, respectively. Column 2 can be positioned at the front end of boom 1, column 4 at the rear end, and column 3 at the midpoint between the front and rear ends.

[0045] The aforementioned No. 2 column 3 can be a rectangular frame structure. The No. 2 column 3 is set vertically between the boom 1 and the bridge deck. One end of the No. 2 column 3 near the boom 1 is connected to the boom 1, and the other end forms a first double-line mounting part 33 and a first single-line mounting part 34. When the first traveling part 32 is installed on the first double-line mounting part 33 or the first single-line mounting part 34, the first traveling part 32 supports the frame structure of the No. 2 column 3 on the bridge deck, thereby allowing the No. 2 column 3 to support the boom 1 on the bridge deck.

[0046] The aforementioned No. 3 post 4 can be a rectangular frame structure. The No. 3 post 4 is set vertically between the boom 1 and the bridge deck. The two ends of the No. 3 post 4 near the boom 1 are connected to the boom 1, and the other two ends form a second double-line mounting part 43 and a second single-line mounting part 44. When the second traveling part 42 is installed on the second double-line mounting part 43 or the second single-line mounting part 44, the second traveling part 42 supports the frame structure of the No. 3 post 4 on the bridge deck, thereby allowing the No. 3 post 4 to support the boom 1 on the bridge deck.

[0047] The aforementioned first double-line mounting portion 33 and first single-line mounting portion 34 can be selected as protruding structures on the frame structure of the second column 3. These protruding structures are provided with screw holes, allowing the first traveling portion 32 to be connected to either the first double-line mounting portion 33 or the first single-line mounting portion 34 via bolts. Alternatively, the first double-line mounting portion 33 and first single-line mounting portion 34 can be selected as grooves on the frame structure of the second column 3, with a portion of the first traveling portion 32 inserted into either the first double-line mounting portion 33 or the first single-line mounting portion 34, and then the first traveling portion 32 is connected to the first frame body 31 via bolts.

[0048] The two first double-line mounting parts 33 mentioned above can be symmetrical about the boom 1 in the transverse direction, and the two first single-line mounting parts 34 can be symmetrical about the boom 1 in the transverse direction. The transverse dimension of the double-line box girder is larger than that of the single-line box girder in the transverse direction. When the boom 1 is transporting single-line and double-line box girders, the support points of the second column 3 and the third column 4 on the bridge deck should correspond to those of the single-line and double-line box girders. That is, the support point of the second column 3 should be at the two sides of the transverse direction of the single-line and double-line box girders, and the support point of the third column 4 should be at the two sides of the transverse direction of the single-line and double-line box girders, so that the bridge erecting machine remains stable when the double-line and single-line box girders are transported on the boom 1.

[0049] When the bridge erecting machine needs to transport a single-line box girder, two first traveling parts 32 are installed one-to-one with two first single-line mounting parts 34, so that the distance between the two first traveling parts 32 is close to accommodate the single-line box girder. When the single-line box girder is on the boom 1, the two first traveling parts 32 can keep the second column 3 stable at the two lateral edges of the single-line box girder on the boom 1, so that the bridge erecting machine can transport the single-line box girder stably.

[0050] When the first traveling section 32 is installed on the first single-line mounting section 34, if a double-line box girder is transported on the boom 1, the two lateral edges of the double-line box girder will extend beyond the two first traveling sections 32, making it impossible for the boom 1 to transport the double-line box girder stably. Therefore, when the bridge erecting machine needs to transport a double-line box girder, the two first traveling sections 32 need to be switched to the two first double-line mounting sections 33, so that the two first traveling sections 32 are switched to the two first double-line mounting sections 33 in a one-to-one correspondence, thereby increasing the distance between the two first traveling sections 32 to accommodate the double-line box girder. When the double-line box girder is transported on the boom 1, the two first traveling sections 32 are located at the two lateral edges of the double-line box girder along the boom 1, ensuring that the second column 3 remains stable during the transport of the double-line box girder.

[0051] The aforementioned second double-line mounting portion 43 and second single-line mounting portion 44 can be selected as protruding structures on the frame structure of column 3 4. These protruding structures are provided with screw holes, allowing the second traveling portion 42 to be connected to either the second double-line mounting portion 43 or the second single-line mounting portion 44 via bolts. Alternatively, the second double-line mounting portion 43 and the second single-line mounting portion 44 can be selected as grooves on the frame structure of column 3 4, with a portion of the second traveling portion 42 inserted into either the second double-line mounting portion 43 or the second single-line mounting portion 44, and then the second traveling portion 42 is connected to the second frame body 41 via bolts.

[0052] The two second double-line mounting portions 43 mentioned above can be symmetrical about the machine arm 1 in the transverse direction, and the two second single-line mounting portions 44 can be symmetrical about the machine arm 1 in the transverse direction.

[0053] When the bridge erecting machine needs to transport a single-line box girder, the two second traveling parts 42 are installed one-to-one with the two second single-line mounting parts 44. The distance between the two second traveling parts 42 is relatively close to accommodate the single-line box girder. When the single-line box girder is on the boom 1, the two second traveling parts 42 can keep the No. 3 column 4 stable at the two lateral edges of the single-line box girder on the boom 1, so that the bridge erecting machine can transport the single-line box girder stably.

[0054] When the second traveling section 42 is installed on the second single-line mounting section 44, if a double-line box girder is transported on the boom 1, the two lateral edges of the double-line box girder will extend beyond the two second traveling sections 42, making it impossible for the boom 1 to transport the double-line box girder stably. Therefore, when the bridge erecting machine needs to transport double-line box girders, the two second traveling sections 42 are switched to the two second double-line mounting sections 43, so that the two second traveling sections 42 are installed one-to-one on the two second double-line mounting sections 43, thereby increasing the distance between the two second traveling sections 42 to accommodate the double box girder. When the double-line box girder is transported on the boom 1, the two second traveling sections 42 are located at the two lateral edges of the double-line box girder along the boom 1, ensuring that the No. 3 column 4 remains stable during the transport of the double-line box girder.

[0055] The first traveling section 32 and the second traveling section 42 mentioned above can be selected as wheel structures, or they can be selected as track structures, as long as the first traveling section 32 can be installed on the frame structure of the second column 3 and the second traveling section 42 can be installed on the frame structure of the third column 4, so that the first traveling section 32 and the second traveling section 42 can support the boom 1.

[0056] When the bridge erecting machine with single and double line bridge erection function provided in this application is used, column 2 is erected on the pier downstream of the bridgehead, and columns 3 and 4 are erected on the bridge deck at the bridgehead. After determining the type of box girder that the bridge erecting machine needs to transport, the box girder is transported to the pier at the bridgehead and the pier downstream of the bridgehead through the boom 1. The box girder is then lowered onto the pier at the edge of the bridgehead and the pier downstream of the bridgehead to complete the erection of the box girder.

[0057] When it is necessary to erect a double-track box girder, two first traveling parts 32 are installed on two first double-track installation parts 33, and two second traveling parts 42 are installed on two second double-track installation parts 43. The double-track box girder is transported by the boom 1 to the pier at the bridgehead and the pier downstream of the bridgehead. The double-track box girder is then lowered onto the pier at the edge of the bridgehead and the pier downstream of the bridgehead to complete the erection of the double-track pier.

[0058] When it is necessary to erect a single-track box girder, two first traveling parts 32 are installed on two first single-track installation parts 34, and two second traveling parts 42 are installed on two second single-track installation parts 44. The single-track box girder is transported by the boom 1 to the pier at the bridgehead and the pier downstream of the bridgehead. The single-track box girder is then lowered onto the pier at the edge of the bridgehead and the pier downstream of the bridgehead to complete the erection of the single-track pier.

[0059] The bridge erecting machine with single and double line bridge erection function provided in this application includes a boom 1 and a first column 2, a second column 3, and a third column 4 arranged longitudinally along the boom 1 to support the movement of the boom 1. The second column 3 includes two sets of first traveling parts 32, two sets of first double line mounting parts 33, and two sets of first single line mounting parts 34 located between the two sets of first double line mounting parts 33 for supporting on the bridge deck. The third column 4 includes two sets of second traveling parts 42, two sets of second double line mounting parts 43, and two sets of second single line mounting parts 44 located between the two sets of second double line mounting parts 43 for supporting on the bridge deck. When the bridge erecting machine switches from erecting double line box girders to erecting single line box girders, each set of first traveling parts 32 switches from the first double line mounting parts 33 to the first single line mounting parts 34, and each set of second traveling parts 42 switches from the second double line mounting parts 43 to the second single line mounting parts 44. By switching between the first traveling section 32 and the first double-track installation section 33 and the first single-track installation section 34, the second column 3 can be adapted to both double-track and single-track box girder conditions. Similarly, by switching between the second traveling section 42 and the second double-track installation section 43 and the second single-track installation section 44, the third column 4 can be adapted to both single-track and double-track box girder conditions. When the bridge erecting machine switches between transporting double-track and single-track box girders, it remains at the bridgehead position, and by correspondingly switching the installation positions of the first traveling section 32 and the second traveling section 42, the second and third columns 3 and 4 can be adapted to both double-track and single-track box girders. This allows the bridge erecting machine to erect different types of box girders without needing to change the bridge erecting machine at the bridgehead, reducing the construction steps required when switching box girder types during bridge erection and improving the efficiency of the bridge erecting machine. During construction, only one bridge erecting machine is needed to meet the needs of erecting various box girders, avoiding the need to prepare multiple bridge erecting machines and increasing construction costs. This allows bridge erecting machines with single and double track erecting functions to save on construction costs.

[0060] Reference Figures 1 to 9 As shown, in some embodiments, the second column 3 further includes a first frame body 31. One end of the first frame body 31 is connected to the boom 1, and the other end is provided with two sets of first double-line mounting portions 33 and two sets of first single-line mounting portions 34. With this configuration, the first frame body 31 serves as the main structure of the second column 3, supporting the boom 1. When the first traveling portion 32 is installed on the first double-line mounting portions 33 and the first single-line mounting portions 34, it is located at the bottom of the first frame body 31, allowing the first traveling portion 32 to support the first frame body 31 on the bridge deck. Through the support of the first traveling portion 32, the first frame body 31 can bear the boom 1.

[0061] Specifically, the first frame body 31 can be selected as a frame structure extending in a vertical direction. One end of the first frame body 31 is connected to the arm 1, and the other end is provided with two sets of first double-line mounting parts 33 and two sets of first single-line mounting parts 34. After the first traveling part 32 is installed on the first double-line mounting part 33 or the first single-line mounting part 34, the two sets of first traveling parts 32 support the first frame body 31 at the bottom.

[0062] Reference Figures 1 to 9 As shown, in some embodiments, the third column 4 further includes a second frame body 41. One end of the second frame body 41 is connected to the boom 1, and the other end is provided with two sets of second double-line mounting portions 43 and two sets of second single-line mounting portions 44. With this configuration, the second frame body 41 serves as the main structure of the third column 4, supporting the boom 1. The second traveling portion 42 is mounted on the second double-line mounting portions 43 and the second single-line mounting portions 44 at the bottom of the second frame body 41, allowing the second traveling portion 42 to support the second frame body 41 on the bridge deck. Through the support of the second traveling portion 42, the second frame body 41 can bear the boom 1.

[0063] The aforementioned second frame body 41 can be selected as a frame structure extending in a vertical direction. Two ends of the second frame body 41 are connected to the arm 1, and the other end is provided with two sets of second double-line mounting parts 43 and two sets of second single-line mounting parts 44. After the second traveling part 42 is installed on the second double-line mounting part 43 or the second single-line mounting part 44, the two sets of second traveling parts 42 support the second frame body 41 at the bottom.

[0064] Reference Figure 1 and Figure 2 As shown, in some embodiments, the first frame body 31 includes an upper crossbeam 311, a connecting beam 312, and a lower crossbeam 313; the upper crossbeam 311 is slidably connected to the arm 1 along the longitudinal direction of the arm 1, the lower crossbeam 313 is disposed on the lower side of the upper crossbeam 311, and the connecting beam 312 is connected between the upper crossbeam 311 and the lower crossbeam 313; the first double-line mounting part 33 and the first single-line mounting part 34 are disposed on the lower crossbeam 313.

[0065] With this configuration, the upper crossbeam 311 slides relative to the boom 1, which allows the second column 3 to slide relative to the boom as a whole. When the second column 3 is supported on the bridge deck, the relative sliding between the boom 1 and the second column 3 allows the boom 1 to move relative to the bridge deck. When the bridge erecting machine is set on the bridgehead and the pier downstream of the bridgehead, the second column 3 can be supported on the bridge deck, allowing the boom 1 to slide relative to the second column 3 and extend out of the bridgehead, making it convenient for the bridge erecting machine to be set on the bridgehead and the pier downstream of the bridgehead.

[0066] The aforementioned upper crossbeam 311 and lower crossbeam 313 can be selected as beam structures extending laterally along the boom 1, and the connecting beam 312 is a beam structure arranged in the vertical direction. The two ends of the connecting beam 312 are connected to the upper crossbeam 311 and the lower crossbeam 313 respectively, so that the upper crossbeam 311, the connecting beam 312 and the lower crossbeam 313 form a vertically arranged frame structure.

[0067] The aforementioned upper crossbeam 311 is arranged along the transverse direction of the boom 1, and the second lower crossbeam 313 is arranged along the transverse direction of the boom 1. The number of connecting beams 312 can be selected as two. The two connecting beams 312 are respectively arranged at both ends of the upper crossbeam 311 along the transverse direction of the boom 1, and the two connecting beams 312 are respectively connected to both ends of the lower crossbeam 313 along the transverse direction of the boom 1. The upper crossbeam 311 and the second lower crossbeam 313 are spaced apart in the middle, so that the upper crossbeam 311, the lower crossbeam 313 and the two connecting beams 312 form a working channel. The boom 1 passes through the working channel and is slidably connected to the upper crossbeam 311. When the bridge erecting machine transports the box girder, the box girder is suspended on the lower side of the boom 1 and moves along the boom 1. The box girder can then move from the rear end of the boom 1 to the front end of the boom 1 through the working channel.

[0068] When a working channel is formed on the first frame body 31, the upper crossbeam 311 is located on the upper side of the machine arm 1. A sliding seat can be optionally provided on the side of the upper crossbeam 311 facing the machine arm 1. The sliding seat has a through groove that runs longitudinally through the sliding seat. The machine arm 1 is slidably connected to the through groove, allowing the upper crossbeam 311 to slide relative to the machine arm 1 along its longitudinal direction. Alternatively, a sliding rail can be provided on the side of the machine arm 1 facing the upper crossbeam 311. The sliding rail is arranged longitudinally along the machine arm 1, and the upper crossbeam 311 has a sliding part that cooperates with the sliding rail. The sliding part is slidably connected to the sliding rail.

[0069] Reference Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, each group of first double-wire mounting parts 33 includes two first double-wire seats, which are symmetrically arranged on both sides of the lower crossbeam 313 along the longitudinal direction of the machine arm 1; each group of first single-wire mounting parts 34 includes two first single-wire seats, which are symmetrically arranged on both sides of the lower crossbeam 313 along the longitudinal direction of the machine arm 1; each group of first traveling parts 32 includes two first rollers 321, which can be correspondingly mounted on two symmetrical first double-wire seats or correspondingly mounted on two symmetrical first single-wire seats.

[0070] With this configuration, the two first rollers 321 support the lower crossbeam 313 on both sides, improving the stability of the lower crossbeam 313 supported by the two first rollers 321. The four first rollers 321 of the two sets of first traveling parts 32 support the first frame body 31 on both sides, increasing the number of support points between the first frame body 31 and the bridge deck, and improving the stability of the first frame body 31.

[0071] Specifically, the first double-wire seat and the first single-wire seat can be selected as protrusion structures protruding from the lower crossbeam 313. The protrusion structures are provided with screw holes so that the first roller 321 is connected to the protrusion structures by bolts. The two first double-wire seats are respectively set on both sides of the lower crossbeam 313 along the longitudinal direction of the machine arm 1, and the two first double-wire seats are arranged opposite each other along the longitudinal direction of the machine arm 1. That is, four first double-wire seats are set on the lower crossbeam 313. Two first double-wire seats form a double-wire seat group, and the two double-wire seat groups are arranged at intervals along the transverse direction of the machine arm 1.

[0072] Two first single-wire seats are respectively set on both sides of the lower crossbeam 313 along the longitudinal direction of the machine arm, and the two first single-wire seats are set opposite each other along the longitudinal direction of the machine arm 1, that is, four first single-wire seats are set on the lower crossbeam 313, two first single-wire seats form a single-wire seat group, two single-wire seat groups are set at intervals along the transverse direction of the machine arm 1, and the two single-wire seat groups are set between two double-wire seat groups.

[0073] The first roller 321 may include a mounting block and a rolling wheel structure, the wheel structure being rotatably connected to the mounting block, and the mounting block being connected to either the first double-track seat or the first single-track seat. The two sets of first traveling sections 32 each include four first rollers 321; when the bridge erecting machine transports double-track box girders, the four first rollers 321 are correspondingly positioned on the four first double-track seats, supporting the first frame body 31 on the bridge deck; when the bridge erecting machine transports single-track box girders, the four first rollers 321 are correspondingly positioned on the four first single-track seats, supporting the first frame body 31 on the bridge deck.

[0074] Reference Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, the lower crossbeam 313 includes two sub-crossbeams 314, which are spaced apart along the longitudinal direction of the arm 1, and both sub-crossbeams 314 are connected to the connecting beam 312.

[0075] Each group of first double-line mounting parts 33 also includes two second double-line seats 35, which are symmetrically arranged on one side of the two sub-beams 314 facing each other. Each group of first single-line mounting parts 34 also includes two second single-line seats 36, which are symmetrically arranged on one side of the two sub-beams 314 facing each other.

[0076] Each set of first traveling sections 32 also includes a second roller 322, which can be installed between two symmetrical second double-line seats 35 or between two symmetrical second single-line seats 36. This arrangement allows two second rollers 322 to be installed between two sub-crossbeams 314, supporting the two sub-crossbeams 314 on the bridge deck. Furthermore, the roller assembly formed by the two second rollers 322 and the four first rollers 321 supports the first frame body 31, increasing the stability of the first frame body 31.

[0077] Specifically, the two sub-beams 314 can be arranged laterally along the arm 1, and the two sub-beams 314 are connected to each other at both ends along the lateral direction of the arm, thereby forming a cavity structure in the middle area of ​​the two sub-beams 314. The cavity structure extends vertically through the lower beam 313. Each of the two sub-beams 314 has a second double-wire seat 35 on one side of the arm 1 that is close to each other in the longitudinal direction. The two second double-wire seats 35 are arranged opposite each other in the longitudinal direction of the arm 1. A second roller 322 can be arranged between each pair of opposite second double-wire seats 35, and the second roller 322 is connected to both second double-wire seats 35.

[0078] The two sub-beams 314 mentioned above are each provided with a second single-line seat 36 on the longitudinal side of the arm 1 that is close to each other. The two second single-line seats 36 are arranged opposite each other along the longitudinal direction of the arm 1. A second roller 322 can be provided between each pair of opposite second single-line seats 36, and the second roller 322 is connected to both second single-line seats 36.

[0079] When the bridge erecting machine transports double-track box girders, each second roller 322 is connected to two opposite second double-track seats 35. When the bridge erecting machine transports single-track box girders, each second roller 322 is connected to two second single-track seats 36 of the box girder.

[0080] The aforementioned second roller 322 includes a mounting block and a wheel body. The wheel body has a rotating shaft arranged laterally along the arm 1. The wheel body is rotatably connected to the lower side of the mounting block. The mounting block is arranged between the two sub-beams 314 and connected to two oppositely arranged second double-line seats 35 or two oppositely arranged second single-line seats 36. The two sets of second double-line seats 35 are respectively connected to the two second rollers 322, so that the two second rollers 322 support the two sub-beams 314 on the bridge deck.

[0081] The aforementioned second roller 322 and the two first rollers 321 form a roller group. Two roller groups are formed on the lower crossbeam 313. When the two roller groups are in the positions of the two first double-line mounting parts 33, the second column 3 is adapted to the double-line box girder. When the two roller groups are in the positions of the two first single-line mounting parts 34, the second column 3 is adapted to the single-line box girder.

[0082] Reference Figure 1, Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, each group of second traveling sections 42 includes rollers connected to a second double-line mounting section 43 or a second single-line mounting section 44. The two rollers support the second frame body 41, allowing the second frame body 41 to move relative to the bridge deck via the rollers. With this configuration, the rollers support the second frame body 41, and the rolling motion of the rollers causes the second frame body 41 to move relative to the bridge deck. This movement of the second frame body 41 causes the boom 1 to move along with the second frame body 41, thus achieving the function of adjusting the position of the bridge erecting machine on the bridge deck.

[0083] Specifically, the roller assembly includes a rotatable wheel body with its rotation axis set horizontally. The roller assembly can be connected to either the second double-line mounting part 43 or the second single-line mounting part 44 via bolts. The roller assembly can roll, causing the second frame body 41 to move on the bridge deck. The movement of the second frame body 41 on the bridge deck can drive the boom 1 to move relative to the bridge deck, thereby adjusting the overall position of the bridge erecting machine on the bridge deck.

[0084] When the bridge erecting machine transports double-track box girders, the two rolling elements are respectively installed on the two second double-track mounting parts 43. When the bridge erecting machine transports single-track box girders, the two rolling elements are respectively installed on the two second single-track mounting parts 44.

[0085] Reference Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the second traveling section 42 further includes a synchronizing rod assembly 451, a drive element 452, and two steering structures 453;

[0086] Two steering structures 453 are mounted on two roller components in a one-to-one correspondence. The roller components can be rotatably connected to the second double-line mounting part 43 or the second single-line mounting part 44 through the steering structure 453. The driving component 452 is disposed on the second frame body 41 and connected to any one of the steering structures 453. The two steering structures 453 are interconnected through the synchronous rod assembly 451 so that the driving component 452 drives multiple steering structures 453 to rotate in the same direction and at the same angle.

[0087] With this configuration, the synchronizing rod assembly 451, the driving component 452, and the two steering structures 453 cooperate with each other to synchronously change the rolling direction of the two roller components, thereby changing the moving direction of the third column 4 relative to the bridge surface. When the roller components roll, the rear end of the machine arm 1 moves relative to the front end of the machine arm 1 in the lateral direction, thereby adjusting the orientation of the machine arm 1 and facilitating the adjustment of the position of the machine arm 1 on the bridge surface.

[0088] Specifically, the steering structure 453 can be a flange with a vertically arranged rotating shaft that can rotate relative to the flange. The rotating shaft is fixedly connected to the roller component, and the flange can be fixedly connected to the second double-line mounting part 43 or the second single-line mounting part 44, thereby allowing the roller component to be rotatably mounted on the second frame body 41 via the steering structure 453. Alternatively, the steering structure 453 can be a rotating shaft, with the roller component connected to it, and the rotating shaft can be rotatably connected to the second double-line mounting part 43 or the second single-line mounting part 44.

[0089] The aforementioned drive component 452 can be a hydraulic cylinder or a hydraulic pneumatic cylinder. The hydraulic cylinder or hydraulic pneumatic cylinder has a telescopic end and is connected to the second frame body 41. When the steering structure 453 is a flange, a protrusion is provided on the outer circumferential surface of the rotating shaft. The telescopic end of the hydraulic cylinder or hydraulic pneumatic cylinder is rotatably connected to the protrusion on the outer circumferential surface of the rotating shaft on the flange, and the telescopic direction of the telescopic end is on a horizontally extending plane, so that when the telescopic end extends or retracts, it can drive the steering structure 453 to rotate relative to the second frame body 41. When the steering structure 453 is a rotating shaft, the telescopic end is rotatably connected to the outer circumferential surface of the rotating shaft, so that when the telescopic end extends or retracts, it can drive the steering structure 453 to rotate relative to the second frame body 41.

[0090] Alternatively, the drive component 452 can be a motor, and the steering structure 453 can be a flange. In this case, a rack is provided on the outer circumference of the flange's rotating shaft. The motor is mounted on the second frame body 41, and a gear is provided at the motor's output end. This gear meshes with the rack on the periphery of the steering structure 453, causing the motor's output end to rotate and driving the steering structure 453 to rotate through the engagement of the gear and rack. Alternatively, the steering structure 453 can be a rotating shaft, with a rack on its outer circumference. The motor is mounted on the second frame body 41, and a gear is provided at the motor's output end. This gear meshes with the rack on the periphery of the steering structure 453, causing the motor's output end to rotate and driving the steering structure 453 to rotate through the engagement of the gear and rack.

[0091] The aforementioned synchronizing rod assembly 451 can be selected as a straight rod extending laterally along the arm 1. The synchronizing rod assembly 451 is positioned on one side of the second frame body 41 along the longitudinal direction of the arm 1, thus placing the synchronizing rod assembly 451 on the same side of the multiple steering structures 453, and ensuring that the synchronizing rod assembly 451 and the multiple steering structures 453 are equidistant in the longitudinal direction of the arm 1. After the multiple steering structures 453 are rotatably connected to the synchronizing rod assembly 451, the rotation of one steering structure 453 drives the synchronizing rod assembly 451 to move, and the movement of the synchronizing rod assembly 451 in turn drives the other steering structures 453 to rotate, ensuring that the synchronizing rod assembly 451 moves the same distance relative to each steering structure 453. Therefore, the multiple steering structures 453 can rotate in the same direction by the same angle.

[0092] Multiple through holes can be optionally provided on the aforementioned synchronizing rod assembly 451. The steering structure 453 is provided with protrusions. The protrusions are rotatably connected to the through holes by bolts or pins. The protrusions of the multiple steering structures 453 are rotatably connected to the multiple through holes one by one. The multiple steering structures 453 are rotatably connected to the synchronizing rod assembly 451 at the same time, so that when the synchronizing rod assembly 451 moves laterally and longitudinally in the machine arm 1, the synchronizing rod assembly 451 can drive the multiple steering structures 453 to rotate in the same direction and at the same angle.

[0093] Reference Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, when the roller assembly is installed on the second single-line mounting part 44, the synchronizing rod assembly 451 includes a first synchronizing rod, the two ends of which are rotatably connected to the steering structure 453 on the two roller assemblies; when the roller assembly is installed on the second double-line mounting part 43, the synchronizing rod assembly 451 includes a second synchronizing rod and a third synchronizing rod connected to the two ends of the second synchronizing rod, each third synchronizing rod being rotatably connected to the steering structure 453 on one roller assembly. With this configuration, when switching the installation position of the roller assembly on the second frame body 41, selecting a suitable rod size in the synchronizing rod assembly 451 allows the synchronizing rod assembly 451 to adapt to the working conditions of the bridge erecting machine transporting double-line box girders or single-line box girders, thus improving the adaptability of the synchronizing rod assembly 451.

[0094] Specifically, the first synchronizing rod extends laterally along the arm 1, and the length of the first synchronizing rod can be selected to be equal to the distance between the two second single-line mounting parts 44, so that the two ends of the first synchronizing rod can be rotatably connected to the steering structure 453 on the two second single-line mounting parts 44 respectively.

[0095] Both the second and third synchronizing rods extend laterally along the arm 1. The length of the second synchronizing rod is less than the distance between the two second double-line mounting parts 43, and the length of the third synchronizing rod is less than the distance between the two second double-line mounting parts 43. After the two third synchronizing rods are installed at both ends of the second synchronizing rod, the sum of the lengths of the second synchronizing rod and the two third synchronizing rods is equal to the distance between the two second double-line mounting parts 43, so that the two third synchronizing rods can be rotatably connected to the steering structure 453 on the two second double-line mounting parts 43 respectively.

[0096] Reference Figure 1 , Figure 5 , Figure 6 and Figure 7As shown, in some embodiments, the second frame body 41 is provided with a rotating mechanism 46, which is rotatably connected to the boom 1. The rotating mechanism 46 drives the second frame body 41 to switch between a flipped position that is attached to the lower side of the boom 1 and a working position that is perpendicular to the boom 1. With this configuration, the second frame body 41 supports the boom 1 when in the working position, and is spaced from the bridge deck when in the flipped position. A transport space is formed between the third column 4 and the bridge deck, allowing transport vehicles carrying box girders to enter the transport space, thus facilitating the hoisting of the box girders onto the boom 1 and improving the ease of operation for hoisting the box girders onto the boom 1.

[0097] Specifically, the rotating mechanism 46 can be a hydraulically driven cylinder with a telescopic end. The telescopic end can extend and retract in one direction under hydraulic drive within the cylinder. The cylinder of the rotating mechanism 46 is rotatably connected to the arm 1 by a hinge or bolt. The telescopic end is rotatably connected to the No. 3 column 4 by a hinge or bolt. The telescopic end is arranged along the longitudinal direction of the arm 1, so that when the telescopic end extends and retracts relative to the cylinder, it pushes the No. 3 column 4 to rotate between the working position and the flipping position. Alternatively, the rotating mechanism 46 can be a motor, which is mounted on the No. 3 column 4. The No. 3 column 4 is rotatably connected to the arm 1 by a rotating shaft. The output end of the motor is connected to the rotating shaft, so that the rotation of the output end of the motor drives the No. 3 column 4 to rotate relative to the arm 1.

[0098] The side of boom 1 facing the bridge deck in the vertical direction is its lower side. Column 4 is positioned on the lower side of boom 1. The rotation axis of column 4 relative to boom 1 can be aligned with the transverse direction of boom 1, allowing column 4 to support boom 1 when perpendicular to it; in this working position, column 4 rotates longitudinally along boom 1 to align with its longitudinal direction, thus fitting against the lower side of boom 1; in this flipped position, boom 1 is supported on the bridge deck and piers by columns 2 and 3. A transport space is formed between column 4 and the bridge deck, allowing transport vehicles to enter and hoist the box girder to be erected onto boom 1.

[0099] Reference Figure 1 and Figure 2As shown, in some embodiments, the first column 2 includes a sliding drive device 21 and a support frame. The sliding drive device 21 is mounted on the support frame 22, and the support frame 22 is slidably connected to the boom 1 via the sliding drive device 21. The sliding drive device 21 drives the support frame 22 to slide relative to the boom 1 along its longitudinal direction. With this configuration, the sliding drive device 21 can adjust the position of the first column 2 on the boom 1. When the bridge erecting machine is set on the bridgehead and the downstream pier, the first column 2 needs to extend from the boom 1 and be supported on the downstream pier. The first column 2 can be adjusted relative to the boom 1 to facilitate alignment of the first column 2 with the downstream pier, improving the ease of operation when the bridge erecting machine is set on the bridgehead and the downstream pier.

[0100] Specifically, the support frame 22 can be a frame structure arranged in a vertical direction. The support frame 22 is located on the lower side of the arm 1. The end of the support frame 22 closest to the arm 1 is the top of the support frame 22. The arm 1 can be provided with a track arranged in the longitudinal direction of the arm 1. A sliding drive device 21 is provided at the top of the support frame 22. The sliding drive device 21 is slidably connected to the track. The sliding drive device 21 can be provided with a main body and a motor. The main body is slidably connected to the track. A gear is provided on the output end of the motor. A rack is provided on the track. After the motor starts, the first column 2 is driven to move relative to the arm 1 through the cooperation of the gear and the rack.

[0101] Alternatively, a sliding drive device 21 can be selected, including a main body and a telescopic cylinder. The main body is slidably connected to the track, and the telescopic cylinder is connected to the main body. The telescopic end of the telescopic cylinder is arranged along the longitudinal direction of the machine arm 1 and is connected to the machine arm 1. The extension and retraction of the telescopic cylinder can drive the main body to slide. The sliding of the main body along the longitudinal direction of the machine arm 1 can drive the support frame 22 to slide along the machine arm 1.

[0102] Reference Figure 1 and Figure 2 As shown, in some embodiments, the sliding drive device 21 includes a sliding connecting seat 211 and a sliding motor 212. One side of the sliding connecting seat 211 is slidably connected to the arm 1, and the other side is fixedly connected to the top of the support frame 22. The sliding motor 212 is disposed on the sliding connecting seat 211. The arm 1 is provided with a rack extending longitudinally along the arm 1. The output end of the sliding motor 212 is meshed with the rack. The output end of the sliding motor 212 rotates to drive the support frame 22 to slide relative to the arm 1.

[0103] With this configuration, the rotation of the output end of the sliding motor 212 and the engagement of the rack can drive the sliding connecting seat 211 to move the first column 2 relative to the machine arm 1. By controlling the sliding motor 212, the position of the first column 2 on the machine arm 1 can be controlled, thus improving the ease of operation for adjusting the position of the first column 2 on the machine arm 1.

[0104] Specifically, the sliding connecting seat 211 can be a block structure with a through groove. The lower side of the machine arm 1 is slidably connected to the through groove. The sliding motor 212 can be a motor. The machine arm 1 has a rack extending longitudinally along the machine arm 1. The rack can be set on one side of the machine arm 1 in the horizontal direction. The output end of the sliding motor 212 is provided with a gear that meshes with the rack. The axial direction of the output end is set along the transverse direction of the machine arm 1. Rotation of the output end can drive the sliding connecting seat 211 to slide relative to the machine arm 1 through the gear and rack.

[0105] Alternatively, the rack can be set on the side of the machine arm 1 facing the through groove, with the bottom of the through groove and the lower side of the machine arm 1 spaced apart. The groove wall and the machine arm 1 are slidably connected in the horizontal direction. The sliding motor 212 is set on the bottom of the through groove so that the output end of the sliding motor 212 can mesh with the rack.

[0106] The second aspect of this application provides a single- and double-track bridge erection method for a bridge erection machine with single- and double-track bridge erection functions as described in any of the above embodiments, comprising: confirming the model of the box girder to be erected, and confirming the installation positions of the first traveling part 32 and the second traveling part 42 according to the model of the box girder; when switching between erecting single-track box girders and double-track box girders, switching the first traveling part 32 to the corresponding first double-track mounting part 33 and the first single-track mounting part 34, and switching the second traveling part 42 to the corresponding second double-track mounting part 43 and the second single-track mounting part 44.

[0107] The first traveling part 32 is installed at the corresponding position of the first frame body 31, and the second traveling part 42 is installed at the corresponding position of the second frame body 41. Then, the second frame body 41 is driven to move relative to the bridge deck through the first roller 321 and the second roller 322. The roller component drives the second frame body 41 to move relative to the bridge deck, so that the front end of the boom 1 extends out of the bridgehead. The sliding connecting seat 211 and the sliding motor 212 drive the first column 2 to slide along the boom 1, so that the first column 2 is set opposite to the bridge pier downstream of the bridgehead and the first column 2 is supported on the bridge pier downstream of the bridgehead.

[0108] The rotating mechanism 46 rotates column 4 to the flip position. The transport vehicle carrying the double-track box girder or single-track box girder enters the transport space between column 4 and the bridge deck. The double-track box girder or single-track box girder on the transport vehicle is hoisted onto the boom 1, so that the double-track box girder or single-track box girder is located between column 4 and column 3. Then the transport vehicle is driven out of the transport space.

[0109] The rotating mechanism 46 drives column 3 4 to rotate to the working position. The double-line box girder or single-line box girder hoisted on the boom 1 slides along the boom 1 toward the front end of the boom 1. The double-line box girder or single-line box girder moves through the working channel of column 2 3 to the space between column 1 2 and column 2 3, so that it is placed on the first pier at the edge of the bridgehead and the second pier downstream of the bridgehead.

[0110] Lower the double-track box girder or single-track box girder so that it is placed on the first pier at the edge of the bridge abutment and the second pier downstream of the bridge abutment, thus completing the erection operation of the double-track box girder or single-track box girder.

[0111] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0112] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bridge erecting machine with single and double line bridge erection functions, characterized in that, It includes a machine arm (1) and a first column (2), a second column (3) and a third column (4) arranged along the longitudinal direction of the machine arm (1) for supporting the movement of the machine arm (1); The second column (3) includes two sets of first traveling sections (32), two sets of first double-line mounting sections (33) for supporting on the bridge deck, and two sets of first single-line mounting sections (34) located between the two sets of first double-line mounting sections (33); the third column (4) includes two sets of second traveling sections (42), two sets of second double-line mounting sections (43) for supporting on the bridge deck, and two sets of second single-line mounting sections (44) located between the two sets of second double-line mounting sections (43); When the bridge erecting machine switches from erecting double-line box girders to erecting single-line box girders, the first traveling section (32) of each group switches from the first double-line mounting section (33) to the first single-line mounting section (34), and the second traveling section (42) of each group switches from the second double-line mounting section (43) to the second single-line mounting section (44).

2. The bridge erecting machine with single and double line bridge erecting functions according to claim 1, characterized in that, The second column (3) also includes a first frame body (31), one end of which is connected to the arm (1), and the other end is provided with two sets of the first double-line mounting parts (33) and two sets of the first single-line mounting parts (34); And / or, the No. 3 column (4) further includes a second frame body (41), one end of which is connected to the arm (1), and the other end is provided with two sets of the second double-line mounting parts (43) and two sets of the second single-line mounting parts (44).

3. The bridge erecting machine with single and double line bridge erecting functions according to claim 2, characterized in that, The first frame body (31) includes an upper crossbeam (311), a connecting beam (312), and a lower crossbeam (313); The upper crossbeam (311) is slidably connected to the arm (1) along the longitudinal direction of the arm (1), the lower crossbeam (313) is disposed on the lower side of the upper crossbeam (311), and the connecting beam (312) is connected between the upper crossbeam (311) and the lower crossbeam (313). The first double-line mounting part (33) and the first single-line mounting part (34) are disposed on the lower crossbeam (313).

4. The bridge erecting machine with single and double line bridge erecting function according to claim 3, characterized in that, Each set of the first double-line mounting part (33) includes two first double-line seats, which are symmetrically arranged on both sides of the lower crossbeam (313) along the longitudinal direction of the arm (1). Each group of first single-line mounting parts (34) includes two first single-line seats, which are symmetrically arranged on both sides of the lower crossbeam (313) along the longitudinal direction of the arm (1). Each group of first traveling parts (32) includes two first rollers (321), which can be installed on two symmetrical first double-wire seats or on two symmetrical first single-wire seats.

5. The bridge erecting machine with single and double line bridge erecting functions according to claim 4, characterized in that, The lower crossbeam (313) includes two sub-crossbeams (314), which are arranged at intervals along the longitudinal direction of the arm (1), and both sub-crossbeams (314) are connected to the connecting beam (312). Each group of first double-line mounting parts (33) also includes two second double-line seats (35), the two second double-line seats (35) are symmetrically arranged on the opposite side of the two sub-beams (314), and each group of first single-line mounting parts (34) also includes two second single-line seats (36), the two second single-line seats (36) are symmetrically arranged on the opposite side of the two sub-beams (314); Each of the first traveling parts (32) further includes a second roller (322), which can be installed between two symmetrical second double-line seats (35) or between two symmetrical second single-line seats (36).

6. The bridge erecting machine with single and double line bridge erecting functions according to claim 2, characterized in that, Each set of the second traveling section (42) includes a roller member connected to the second double-line mounting section (43) or the second single-line mounting section (44). The two roller members support the second frame body (41) so that the second frame body (41) can move relative to the bridge deck via the roller members.

7. The bridge erecting machine with single and double line bridge erecting function according to claim 6, characterized in that, The second traveling section (42) also includes a synchronizing rod assembly (451), a drive unit (452), and two steering structures (453); Two steering structures (453) are mounted on two roller components in a one-to-one correspondence. The roller components can be rotatably connected to the second double-line mounting part (43) or the second single-line mounting part (44) through the steering structure (453). The driving member (452) is disposed on the second frame body (41) and connected to any one of the steering structures (453). The two steering structures (453) are interconnected through the synchronization rod assembly (451) so that the driving member (452) drives multiple steering structures (453) to rotate in the same direction and at the same angle.

8. The bridge erecting machine with single and double line bridge erecting functions according to claim 7, characterized in that, When the roller component is installed on the second single-line mounting part (44), the synchronizing rod assembly (451) includes a first synchronizing rod, and the two ends of the first synchronizing rod are rotatably connected to the steering structure (453) on the two roller components; When the roller component is installed on the second double-line mounting part (43), the synchronizing rod assembly includes a second synchronizing rod and a third synchronizing rod connected to both ends of the second synchronizing rod, and each third synchronizing rod is rotatably connected to the steering structure (453) on one of the roller components.

9. The bridge erecting machine with single and double line bridge erecting functions according to claim 2, characterized in that, The second frame body (41) is provided with a rotating mechanism (46), which is rotatably connected to the arm (1). The rotating mechanism (46) drives the second frame body (41) to switch between a flipping position that fits against the lower side of the arm (1) and a working position that is perpendicular to the arm (1).

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