Bridge erecting and transporting machine

Abstract

An embodiment of the present application provides a bridge erection and transporting machine for hoisting simply supported beams. The bridge erection and transporting machine includes: a main beam; the main beam includes a first fixed beam body, a first adjustable beam body, and a second fixed beam body arranged in sequence along the longitudinal direction, and both ends of the first adjustable beam body are detachably connected to the first fixed beam body and the second fixed beam body respectively; a front hoisting device fixedly arranged on the second fixed beam body for hoisting the front end of the simply supported beam; a rear hoisting device arranged on the first fixed beam body and movable relative to the first fixed beam body along the longitudinal direction; the rear hoisting device is used for hoisting the rear end of the simply supported beam; and main outriggers arranged on the second fixed beam body and movable relative to the second fixed beam body along the longitudinal direction. The bridge erection and transporting machine provided by the embodiment of the present application can hoist and erect simply supported beams with various spans.

Description

Technical Field

[0001] This application relates to bridge construction technology, and particularly to a bridge erection and transporting machine. Background Art

[0002] As one of the main equipment for railway bridge construction, a bridge erection and transporting machine can hoist and erect a concrete beam to the bridge position, with advantages such as fast construction speed, flexibility, etc. Moreover, during the bridge erection process, no components need to be disassembled, no auxiliary machinery or excessive labor is required, greatly improving the bridge erection efficiency.

[0003] The suitable length of a simply supported beam for traditional railways is about 32 meters, and currently, all integrated bridge erection and transporting machines are designed to adapt to 32 - meter simply supported beams. For the 40 - meter simply supported beams of high - speed railways at the present stage, traditional bridge erection and transporting machines cannot meet the requirements. By extending the length of the bridge erection and transporting machine to adapt to the requirements of 40 - meter simply supported beams, the above problems can be solved. However, with the progress of technology, simply supported beams of other lengths will appear in the future. If a bridge erection and transporting machine is designed for each length of simply supported beam, it will greatly waste resources. Summary of the Invention

[0004] To solve one of the above - mentioned technical defects, a bridge erection and transporting machine is provided in an embodiment of this application.

[0005] An embodiment of this application provides a bridge erection and transporting machine for hoisting a simply supported beam. The bridge erection and transporting machine includes:

[0006] A main beam; the main beam includes a first fixed beam body, a first adjustable beam body, and a second fixed beam body arranged in sequence along the longitudinal direction. Both ends of the first adjustable beam body are detachably connected to the first fixed beam body and the second fixed beam body respectively;

[0007] A front lifting device, fixedly arranged on the second fixed beam body for hoisting the front end of the simply supported beam;

[0008] A rear lifting device, arranged on the first fixed beam body and movable relative to the first fixed beam body along the longitudinal direction; the rear lifting device is used for hoisting the rear end of the simply supported beam;

[0009] Main outriggers, arranged on the second fixed beam body and movable relative to the second fixed beam body along the longitudinal direction.

[0010] The technical solution provided by the embodiments of the present application adopts a main beam including a first fixed beam body, a first adjusting beam body, and a second fixed beam body arranged in sequence along the longitudinal direction. The two ends of the first adjusting beam body are respectively detachably connected to the first fixed beam body and the second fixed beam body. When the first adjusting beam body is connected between the first fixed beam body and the second fixed beam body, it can adapt to a longer simply supported beam; when the first adjusting beam body is removed, the first fixed beam body and the second fixed beam body are directly connected, and it can adapt to a shorter simply supported beam. Moreover, a front lifting device for lifting the front end of the simply supported beam is fixed on the second fixed beam body, and a rear lifting device for lifting the rear end of the simply supported beam is movably arranged on the first fixed beam body. The rear lifting device can flexibly adapt to simply supported beams of different lengths by moving longitudinally. Description of the Drawings

[0011] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0012] Figure 1 It is a schematic diagram of the bridge erector provided by the embodiments of the present application preparing to pass through the hole;

[0013] Figure 2 It is a schematic structural diagram of the main beam in the bridge erector provided by the embodiments of the present application;

[0014] Figure 3 is Figure 1 an enlarged view of area A in;

[0015] Figure 4 is Figure 2 a longitudinal connection view of area B in;

[0016] Figure 5 is Figure 2 a longitudinal connection view of area C in;

[0017] Figure 6 is Figure 2 a longitudinal connection view of area D in;

[0018] Figure 7 is Figure 2 a cross-sectional view taken along line E-E in;

[0019] Figure 8 is Figure 7 an enlarged view of area F in;

[0020] Figure 9 is Figure 2 a schematic diagram of the first fixed beam body and the first adjusting beam body in;

[0021] Figure 10 is Figure 9Cross-sectional view of G-G in the middle;

[0022] Figure 11 is Figure 9 Cross-sectional view of H-H in the middle;

[0023] Figure 12 Schematic structural diagram of the second fixed beam body and the second adjusting beam body;

[0024] Figure 13 is Figure 12 Cross-sectional view of I-I in the middle.

[0025] Reference numerals:

[0026] 1 - Main beam; 11 - First fixed beam body; 111 - First web hole; 112 - Upper flange plate of the first fixed beam body; 113 - Lower flange plate of the first fixed beam body; 114 - Upper web of the first fixed beam body; 115 - Lower web of the first fixed beam body; 116 - Upper partition of the first fixed beam body; 117 - Lower partition of the first fixed beam body; 12 - First adjusting beam body; 121 - Second web hole; 122 - Upper flange plate of the first adjusting beam body; 123 - Lower flange plate of the first adjusting beam body; 124 - Web of the first adjusting beam body; 13 - Second fixed beam body; 131 - Web of the second fixed beam body; 132 - First track; 133 - Upper flange plate of the second fixed beam body; 134 - Lower flange plate of the second fixed beam body; 135 - Upper web of the second fixed beam body; 136 - Lower web of the second fixed beam body; 137 - Upper partition of the second fixed beam body; 138 - Lower partition of the second fixed beam body; 14 - Driving device; 15 - Web hole filling plate; 16 - Outer connecting plate; 17 - Inner connecting plate; 18 - Second adjusting beam body; 181 - Second track; 191 - Web flange; 192 - Flange stiffener; 193 - Web stiffener; 194 - Partition flange; 195 - Track reinforcing steel plate;

[0027] 2 - Front lifting device;

[0028] 3 - Rear lifting device; 31 - Rear lifting cross beam; 32 - Rear lifting sling;

[0029] 4 - Main leg;

[0030] 5 - Front vehicle device;

[0031] 6 - Rear vehicle device;

[0032] 7 - Middle leg;

[0033] 8 - Hoisting system;

[0034] 9 - Simply supported beam; 91 - Bridge pier. Detailed implementation manners

[0035] In order to make the technical solutions and advantages in the embodiments of the present application clearer and more understandable, the following further details the exemplary embodiments of the present application with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than an exhaustive list of all embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0036] This embodiment provides a bridge erection and transporting machine for hoisting and erecting simply supported beams. The bridge erection and transporting machine provided in this embodiment can adapt to simply supported beams of various lengths.

[0037] Figure 1 It is a schematic diagram of preparing for the bridge erection and transporting machine to pass through the hole in the embodiment of the present application. Figure 2 It is a schematic structural diagram of the main beam in the bridge erection and transporting machine provided in the embodiment of the present application. As Figure 1 and Figure 2 shown, the bridge erection and transporting machine provided in this embodiment includes: a main beam 1, a front hoisting device 2, a rear hoisting device 3, and a main support leg 4. Preparing for the bridge erection and transporting machine to pass through the hole means the process of transporting the simply supported beam to the site to be erected and lowering the main support leg to support it on the pier.

[0038] Among them, the length direction of the main beam 1 is the same as the erection direction of the simply supported beam 9, which is called the longitudinal direction. The direction perpendicular to the longitudinal direction is called the transverse direction, and the vertical direction is called the vertical direction. The main beam 1 is the main structure of the erection and transporting machine, and each component in the erection and transporting machine is arranged on the main beam 1. The main beam 1 includes a first fixed beam body 11, a first adjustable beam body 12, and a second fixed beam body 13 arranged in sequence from the rear to the front along the longitudinal direction. Among them, both ends of the first adjustable beam body 12 are detachably connected to the first fixed beam body 11 and the second fixed beam body 13 respectively.

[0039] The front hoisting device 2 is fixedly arranged on the second fixed beam body 13 and is used for hoisting the front end of the simply supported beam 9. The rear hoisting device 3 is arranged on the first fixed beam body 11 and can move relative to the first fixed beam body 11 along the longitudinal direction. The rear hoisting device 3 is used for hoisting the rear end of the simply supported beam 9. The front hoisting device 2 and the rear hoisting device respectively hoist both ends of the simply supported beam 9 and can drive the simply supported beam 9 to lift and lower.

[0040] The main support leg 4 is arranged on the second fixed beam body 13 and can move relative to the second fixed beam body 13 along the longitudinal direction. When the bridge erection and transporting machine prepares to pass through the hole, the main support leg 4 is located at the front end of the main beam 1 and is used for supporting on the pier at the front end of the simply supported beam to be erected and supporting the main beam 1.

[0041] In addition, the bridge erection and transporting machine further includes: a front vehicle device 5, a rear vehicle device 6, a middle support leg 7, and a hoisting system 8. The front vehicle device 5 is arranged on the second fixed beam body 13, and the rear vehicle device 6 is fixed on the first fixed beam body 11. The structures of the front vehicle device 5 and the rear vehicle device 6 are similar, including a main frame, a driving device, and wheels. The driving device can drive the wheels to travel above roads, tunnels, and pre-erected simply supported beams, thereby driving the main frame to move forward or backward in the longitudinal direction.

[0042] The bridge erection and transporting machine meets the requirements for beam erection at the tunnel exit and at the tunnel entrance, and also meets the requirements for beam erection in other application scenarios.

[0043] The middle support leg 7 is fixed on the second fixed beam body 13 and is used to support on the pier when the main support leg 4 needs to be moved, so as to support the main beam 1 to keep it balanced. The hoisting system 8 is arranged on the first fixed beam body 11 and is used to provide hoisting power for the front hoisting device 2 and the rear hoisting device 3 to promote their lifting. The above-mentioned front vehicle device 5, rear vehicle device 6, middle support leg 7, and hoisting system 8 can all be realized by common means in the art, and will not be described in detail or limited in this embodiment.

[0044] The bridge erection and transporting machine provided in this embodiment can adapt to simply supported beams of various lengths and can erect simply supported beams with lengths from 20 meters to 40 meters. For example: the bridge erection and transporting machine can adapt to both the commonly used 32-meter simply supported beam in the art and the 40-meter simply supported beam.

[0045] When a 40-meter simply supported beam needs to be erected, the first adjusting beam body 12 is connected between the first fixed beam body 11 and the second fixed beam body 13, which is equivalent to increasing the length of the main beam 1. And the rear hoisting device 3 is moved backward to a suitable position so that the distance between the rear hoisting device 3 and the front hoisting device 2 meets the hoisting requirements for the 40-meter simply supported beam.

[0046] When a 32-meter simply supported beam needs to be erected, on the basis of the above content, the rear hoisting device 3 is moved forward until the distance between it and the front hoisting device 2 meets the hoisting requirements for the 32-meter simply supported beam.

[0047] When a 24-meter or 22-meter simply supported beam needs to be erected, the rear hoisting device 3 is continuously moved forward until the distance between it and the front hoisting device 2 meets the hoisting requirements for the 24-meter or 22-meter simply supported beam; or, the first adjusting beam body 12 is removed, and the first fixed beam body 11 is directly connected to the second fixed beam body 12, which is equivalent to shortening the length of the main beam 1, and the rear hoisting device 3 is appropriately adjusted to adapt to the hoisting requirements for the 24-meter or 22-meter simply supported beam.

[0048] The technical solution provided in this embodiment adopts a main beam including a first fixed beam body, a first adjusting beam body, and a second fixed beam body arranged in sequence along the longitudinal direction. The two ends of the first adjusting beam body are detachably connected to the first fixed beam body and the second fixed beam body respectively. When the first adjusting beam body is connected between the first fixed beam body and the second fixed beam body, it can adapt to a longer simply supported beam; when the first adjusting beam body is removed, the first fixed beam body and the second fixed beam body are directly connected, which can adapt to a shorter simply supported beam. Moreover, the front lifting device for lifting the front end of the simply supported beam is fixed on the second fixed beam body, and the rear lifting device for lifting the rear end of the simply supported beam is movably arranged on the first fixed beam body. The rear lifting device can move longitudinally to flexibly adapt to simply supported beams of different lengths.

[0049] Based on the above technical solution, this embodiment provides a specific implementation manner of a bridge erection machine:

[0050] The first fixed beam body 11, the first adjusting beam body 12, and the second fixed beam body 13 in the main beam 1 can all be box-shaped structures. In this embodiment, each beam body is a box-shaped structure with a rectangular cross-section, which is connected by an upper flange plate, a lower flange plate, and webs on both sides. Of course, the cross-section of each beam body can also be other shapes, which are not limited in this embodiment.

[0051] First web holes 111 are symmetrically opened on the webs on both sides of the first fixed beam body 11, and the first web holes 111 extend along the longitudinal direction. The rear lifting device 3 straddles the first web holes 111 opened on the webs on both sides and can move along the first web holes 111 until the distance between the rear lifting device 3 and the front lifting device 2 meets the lifting requirements of the simply supported beam 9.

[0052] This embodiment provides a specific implementation manner of the rear lifting device 3: Figure 3 For Figure 1 the enlarged view of area A in Figure 3 As shown, the rear lifting device 3 includes a rear lifting cross beam 31 and a rear lifting sling 32. Among them, the rear lifting cross beam 31 passes through the first web holes 111 opened on the webs on both sides in the transverse direction, which is equivalent to straddling the first web holes 111 on both sides and lapping on the webs below the first web holes 111. The number of the rear lifting slings 32 is two, which are respectively connected from the two outer sides of the first fixed beam body 11 to both ends of the rear lifting cross beam 31.

[0053] Figure 3 It is shown in that the number of the rear lifting cross beams 31 is two, arranged side by side, and the two rear lifting cross beams 31 are connected to move synchronously. The two rear lifting cross beams 31 can move longitudinally in the first web holes 111, driving the rear lifting slings 32 at both ends to move longitudinally in the first web holes 111.

[0054] A driving device 14 can be arranged on the first fixed beam body 11 to drive the rear lifting cross beam 31 to move. The driving device 14 can be a hydraulic driving device, a compressed air driving device or an electric driving device. In this embodiment, a jack is adopted to drive the rear lifting cross beam 31 to move through hydraulic pressure.

[0055] After determining the approximate position of the rear lifting device 3, the driving device 14 is fixed on the first fixed beam body 11 by bolts, and the driving device 14 drives the rear lifting device 3 to move in the longitudinal direction for a small adjustment to adapt to the length of the simply supported beam.

[0056] The structure of the rear lifting sling 32 can be realized by referring to the common methods in the art, and the connection and cooperation method with the hoisting system 8 can also be realized by referring to the common methods in the art.

[0057] Furthermore, the opening of the first web hole 111 is extended to the front end of the first fixed beam body 11. Second web holes 121 extending in the longitudinal direction are symmetrically formed on both side webs of the first adjusting beam body 12, and the openings of the second web holes 121 are extended to the rear end of the first adjusting beam body 12. The first web hole 111 is docked with the second web hole 121 so that the rear lifting device 3 can move within the area formed by the first web hole 111 and the second web hole 121. It is equivalent to that the rear lifting device 3 can not only move within the first web hole 111, but also move into the second web hole 121, extending its moving distance and enabling it to adapt to simply supported beams 9 of more lengths.

[0058] In addition, a web hole filling plate 15 is arranged in the first web hole 111 and / or the second web hole 121 and is connected to the corresponding upper and lower webs, which can improve the strength of the web. The number and position of the web hole filling plates 15 can be determined according to the position of the rear lifting device 3.

[0059] For example: when the rear lifting device 3 is located at the leftmost end of the first web hole 111, Figure 2 Four web hole filling plates 15 are arranged at intervals on the right side of the web hole filling plate 15. The left three web hole filling plates 15 are located in the first web hole 111 and are connected to the corresponding upper and lower webs of the first web hole 111. The rightmost web hole filling plate 15 is located at the docking position of the first web hole 111 and the second web hole 121. The top of this web hole filling plate 15 is respectively connected to the web above the first web hole 111 and the web above the second web hole 121, and the bottom is respectively connected to the web below the first web hole 111 and the web below the second web hole 121.

[0060] For another example: when the rear lifting device 3 is located at the middle position of the first web hole 111, web hole filling plates 15 can be arranged on both sides of the rear lifting device 3.

[0061] For another example: when the rear lifting device 3 is located at the rightmost end of the second web hole 121, a plurality of web hole filling plates 15 can be arranged at intervals on the left side of the rear lifting device 3.

[0062] The quantity and size of the web hole filling plates 15 can be set flexibly. The positions of the web hole filling plates 15 are adjusted according to the position of the rear lifting device 3, so that the strength, stiffness and stability of the main beam 1 meet the requirements for bridge erection.

[0063] The connection modes between the above-mentioned beam bodies can be realized by various means. This embodiment provides a specific way: a beam body connection assembly is used to connect the first fixed beam body 11 and the first adjusting beam body 12, the second fixed beam body 13 and the first adjusting beam body 12, or the first fixed beam body 11 and the second fixed beam body 13.

[0064] The beam body connection assembly specifically includes: an outer connecting plate and an inner connecting plate. Among them, the outer connecting plate is located on the outer side of the joints of two adjacent beam bodies and has overlapping parts with the two beam bodies respectively. The inner connecting plate is located on the inner side of the joints of two adjacent beam bodies and has overlapping parts with the two beam bodies respectively. The inner connecting plate and the outer connecting plate are in corresponding positions and are connected by bolts.

[0065] The above two adjacent beam bodies are: the first fixed beam body 11 and the first adjusting beam body 12, or the second fixed beam body 13 and the first adjusting beam body 12, or the first fixed beam body 11 and the second fixed beam body 13. When a beam body is a rectangular box girder, beam body connection assemblies are arranged on all four faces of the beam body, that is: outer connecting plates are arranged on the outer sides of the upper flange plate, lower flange plate and two side webs of the beam body, and inner connecting plates are arranged on the inner sides. The inner connecting plates are connected to the corresponding outer connecting plates.

[0066] Taking the connection between the first fixed beam body 11 and the first adjusting beam body 12 as an example, Figure 4 For Figure 2 the longitudinal connection view of area B in Figure 4 It shows the connection of the upper flange plates of the first fixed beam body 11 and the first adjusting beam body 12. As Figure 4As shown, the upper flange plate 112 of the first fixed beam body is butted against the upper flange plate 122 of the first adjusting beam body. The outer connecting plate 16 is located above the butting position and has overlapping parts with the upper flange plate 112 of the first fixed beam body and the upper flange plate 122 of the first adjusting beam body respectively; the inner connecting plate 17 is located below the butting position and has overlapping parts with the upper flange plate 112 of the first fixed beam body and the upper flange plate 122 of the first adjusting beam body respectively. Bolts are used to pass vertically through the inner connecting plate 17, the upper flange plate 112 of the first fixed beam body and the outer connecting plate 16 in sequence, and vertically through the inner connecting plate 17, the upper flange plate 122 of the first adjusting beam body and the outer connecting plate 16 in sequence, so as to connect the upper flange plates of the first fixed beam body 11 and the first adjusting beam body 12 together.

[0067] Figure 5 It is Figure 2 the longitudinal connection view of area C in Figure 5 The connection of the lower flange plates of the first fixed beam body 11 and the first adjusting beam body 12 is shown. As Figure 5 shown, the lower flange plate 113 of the first fixed beam body is butted against the lower flange plate 123 of the first adjusting beam body. The outer connecting plate 16 is located below the butting position and has overlapping parts with the lower flange plate 113 of the first fixed beam body and the lower flange plate 123 of the first adjusting beam body respectively; the inner connecting plate 17 is located above the butting position and has overlapping parts with the lower flange plate 113 of the first fixed beam body and the lower flange plate 123 of the first adjusting beam body respectively. Bolts are used to pass vertically through the inner connecting plate 17, the lower flange plate 113 of the first fixed beam body and the outer connecting plate 16 in sequence, and vertically through the inner connecting plate 17, the lower flange plate 123 of the first adjusting beam body and the outer connecting plate 16 in sequence, so as to connect the lower flange plates of the first fixed beam body 11 and the first adjusting beam body 12 together.

[0068] Figure 6 It is Figure 2 the longitudinal connection view of area D in Figure 6 The connection between the web of the first adjusting beam body 12 and the web of the second fixed beam body 13 is shown. As Figure 6 shown, the web 124 of the first adjusting beam body is butted against the web 131 of the second fixed beam body. The outer connecting plate 16 is located outside the butting position and has overlapping parts with the web 124 of the first adjusting beam body and the web 131 of the second fixed beam body respectively. The inner connecting plate 17 is located inside the butting position and has overlapping parts with the web 124 of the first adjusting beam body and the web 131 of the second fixed beam body respectively. Figure 5It is a cross-sectional view, and only the inner connecting plate 17 can be seen. Bolts are used to sequentially pass through the inner connecting plate 17, the first adjusting beam web 124, and the outer connecting plate 16 horizontally, and sequentially pass through the inner connecting plate 17, the second fixed beam web 131, and the outer connecting plate 16 horizontally, so as to connect the webs of the first adjusting beam 12 and the second fixed beam 13 together respectively.

[0069] Figure 7 It is Figure 2 the cross-sectional view E-E in Figure 8 and Figure 7 the enlarged view of area F in Figure 7 and Figure 8 show the connection between the first adjusting beam 12 and the second fixed beam 13. As Figure 7 and Figure 8 shown, the webs on both sides of the first adjusting beam 12 and the second fixed beam 13 are connected in the above manner. The upper flange plates and lower flange plates of the first adjusting beam 12 and the second fixed beam 13 are also connected by referring to the above manner.

[0070] The above main leg 4 can move longitudinally relative to the second fixed beam 13. Specifically, a first track 132 is provided at the bottom of the second fixed beam 13, and rollers are provided at the top of the main leg 4 to slide along the first track 132.

[0071] On the basis of the above technical solution, this embodiment provides another implementation manner of the main beam 1: As Figure 2 shown, the main beam 1 further includes: a second adjusting beam 18. The second adjusting beam 18 is detachably connected to the front end of the second fixed beam 13. A second track 181 is provided at the bottom of the second adjusting beam 18, and the second track 181 is docked with the first track 132 so that the main leg 4 can move on the first track and the second track. This is equivalent to extending the longitudinal movement distance of the main leg 4, further meeting the need for erecting longer simply supported beams.

[0072] The second adjusting beam 18 and the second fixed beam 13 can also be connected by the above beam connection assembly.

[0073] On the basis of the above technical solution, this embodiment provides another implementation manner of the main beam 1: The main beam 1 is composed of multiple segments spliced together. In this embodiment, the main beam 1 is composed of nine segments spliced together, as Figure 2The segments 101 to 109 shown. Among them, segment 101 and segment 102 are connected together to form the first fixed beam body 11, segment 103 serves as the first adjustable beam body 12, segments 104 to 108 are connected together to form the second fixed beam body 13, and segment 109 is equivalent to the second adjustable beam body 18 mentioned above. The length of the main beam 1 is adjusted by disassembling and assembling segment 103 and segment 109 to adapt to simply supported beams 9 of different lengths. The length of each segment can be set according to the load-bearing conditions of each point of the main beam 1 and the transportation conditions of the main beam. The main beam is divided into multiple segments, and each segment is connected together through a beam connection assembly, which is convenient for disassembly and assembly and transportation.

[0074] Each beam body is connected into a box structure by an upper flange plate, a lower flange plate, an upper web plate and a lower web plate, and can be fixed together by welding. Taking the first fixed beam body 11 as an example, the first fixed beam body 11 includes: a first fixed beam body upper flange plate 112, a first fixed beam body lower flange plate 113, a first fixed beam body upper web plate 114 and a first fixed beam body lower web plate 115. In the following description, the above four components are abbreviated. The first fixed beam body upper flange plate 112 is simply referred to as the upper flange plate 112, the first fixed beam body lower flange plate 113 is simply referred to as the lower flange plate 113, the first fixed beam body upper web plate 114 is simply referred to as the upper web plate 114, and the first fixed beam body lower web plate 115 is simply referred to as the lower web plate 115.

[0075] Figure 9 is Figure 2 a schematic diagram of the first fixed beam body and the first adjustable beam body in Figure 10 is Figure 9 the G-G cross-sectional view in Figure 11 is Figure 9 the H-H cross-sectional view in. As Figures 9 to 11 shown, the upper flange plate 112 and the lower flange plate 113 are aligned vertically, and there is a certain distance between them. The number of upper web plates 114 is two, which are respectively connected to both sides of the upper flange plate 112 and are perpendicular to the upper flange plate 112. The number of lower web plates 115 is two, which are respectively connected to both sides of the lower flange plate 113 and are perpendicular to the lower flange plate 113. The upper web plate 114 and the lower web plate 115 are connected by a web flange 191.

[0076] The bottom end of the upper web plate 114 is recessed upward to form a first recessed part, and the top end of the lower web plate 115 is recessed downward to form a second recessed part. The first recessed part and the second recessed part are butted to form a first web hole 111. The first web hole 111 is a rounded hole, and the welding opening is edged, and a patch plate is welded at the rounded corner position of the opening, which can effectively improve the local stability of the main beam structure. The opening edge is a rectangular steel plate, which is bent according to the shape of the web opening and welded at the web opening.

[0077] Further, the first fixed beam body 11 further includes: an upper partition plate 116 and a lower partition plate 117 of the first fixed beam body (simply referred to as the upper partition plate 116 and the lower partition plate 117 respectively). The upper partition plate 116 and the lower partition plate 117 are located within the area enclosed by the upper flange plate 112, the lower flange plate 113, the upper web plate 114, and the lower web plate 115. The upper partition plate 116 is perpendicularly connected to the upper flange plate 112 and the upper web plate 114 respectively, and the lower partition plate 117 is perpendicularly connected to the lower flange plate 113 and the lower web plate 115 respectively. The upper partition plate 116, the lower partition plate 117, and other plates are connected by partition flanges. The upper partition plate 116 and the lower partition plate 117 can improve the overall stability of the beam body. Each partition plate is connected to each flange plate and web plate by welding.

[0078] Further, the main beam 1 further includes: flange plate stiffeners 192, which are connected to the inner sides of the upper flange plate 112 and the lower flange plate 113. The cross-section of the flange plate stiffeners 192 is "T" shaped and is arranged along the entire lengths of the upper flange plate 112 and the lower flange plate 113 for improving the strength of the upper flange plate 112 and the lower flange plate 113.

[0079] The main beam 1 further includes: web plate stiffeners 193, which are connected to the inner sides of the upper web plate 113 and the lower web plate 114. The cross-section of the web plate stiffeners 193 is "T" shaped and is arranged along the entire lengths of the upper web plate 113 and the lower web plate 114 for improving the strength of the upper web plate 113 and the lower web plate 114.

[0080] Figure 12 It is a structural schematic diagram of the second fixed beam body and the second adjusting beam body. Figure 13 It is Figure 12 the sectional view taken along line I-I in Figure 12 and Figure 13 shows a schematic diagram of the second fixed beam body 13, taking segment 108 as an example. The second fixed beam body is enclosed in a box structure by a second fixed beam body upper flange plate 133, a second fixed beam body lower flange plate 134, a second fixed beam body upper web plate 135, and a second fixed beam body lower web plate 136. The second fixed beam body upper web plate 135 and the second fixed beam body lower web plate 136 are connected by a web flange 191. The second fixed beam body upper partition plate 137 is perpendicularly connected to the second fixed beam body upper flange plate 133 and the second fixed beam body upper web plate 135, and the second fixed beam body lower partition plate 138 is perpendicularly connected to the second fixed beam body lower flange plate 134 and the second fixed beam body lower web plate 136. The second fixed beam body upper partition plate 137 and the second fixed beam body lower partition plate 138 are connected by a partition flange 194.

[0081] A first rail 132 is welded below the lower flange plate 134 of the second fixed beam body. The first rail 132 is used to bear the vertical reaction force of the main leg 4. In order to strengthen the connection of the first rail 132, a rail reinforcement steel plate 195 is welded between the lower web plate 136 and the lower flange plate 134 of the second fixed beam body.

[0082] Similarly, a second rail 181 is welded to the bottom of the second adjusting beam body 18, and is also strengthened by a rail reinforcement steel plate.

[0083] The above-mentioned main beam is formed by connecting an upper flange plate, a lower flange plate, an upper web plate, a lower web plate, upper diaphragms and lower diaphragms, and multiple reinforcing ribs are used to improve the strength, so that the strength, stiffness and stability of the main beam meet the lifting requirements while reducing its own weight and improving the carrying capacity. At the position where the load of the main beam is small, the thickness of the flange plate can be reduced, which can effectively reduce the self-weight, save raw materials and improve the material utilization rate.

[0084] In the above solution provided by this embodiment, the first adjusting beam body 12 and the second adjusting beam body 18 are disassembled and assembled according to the length of the simply supported beam, which can not only meet the requirements of erecting a 40-meter simply supported beam, but also meet the requirements of simply supported beams with different spans below 40 meters. By adjusting the position of the rear hoisting device 3, stepless adjustment can be achieved to adapt to simply supported beams of various lengths.

[0085] Regarding the current development status of China's railways, 32-meter simply supported beams and 40-meter simply supported beams will coexist for a long time. The bridge erection and transporting machine provided by this embodiment can not only erect 32-meter simply supported beams, but also erect 40-meter simply supported beams, with strong flexibility, adjustable carrying capacity, and saving the construction cost of the erection and transporting machine.

[0086] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0087] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0088] In this application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0089] Although the preferred embodiments of this application have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of this application.

[0090] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

1. A bridge erection and transportation machine, used for hoisting simply supported beams, characterized in that, The bridge erection and transporter includes: A main beam; the main beam includes a first fixed beam body, a first adjustable beam body, and a second fixed beam body arranged in sequence along the longitudinal direction. Both ends of the first adjustable beam body are detachably connected to the first fixed beam body and the second fixed beam body respectively; A beam connection assembly for connecting the first fixed beam body and the first adjustable beam body, the second fixed beam body and the first adjustable beam body, or the first fixed beam body and the second fixed beam body; A front lifting device fixedly arranged on the second fixed beam body for hoisting the front end of the simply supported beam; A rear lifting device arranged on the first fixed beam body and movable relative to the first fixed beam body along the longitudinal direction; the rear lifting device is used for hoisting the rear end of the simply supported beam; Main legs arranged on the second fixed beam body and movable relative to the second fixed beam body along the longitudinal direction; On both side webs of the first fixed beam body, first web holes are symmetrically opened and extend along the longitudinal direction; the rear lifting device straddles the first web holes opened on both side webs and can move along the first web holes; On both side webs of the first adjustable beam body, second web holes are symmetrically opened and extend along the longitudinal direction; the opening of the second web hole extends to the rear end of the first adjustable beam body; the opening of the first web hole extends to the front end of the first fixed beam body; the first web hole is docked with the second web hole so that the rear lifting device can move within the area formed by the first web hole and the second web hole.

2. The bridge erection and transportation machine according to claim 1, characterized in that, The rear lifting device includes: A rear lifting cross beam straddling the first web holes opened on both side webs along the transverse direction; Two groups of rear lifting slings respectively connected to both ends of the rear lifting cross beam and located outside the first fixed beam body.

3. The bridge erection and transportation machine according to claim 2, characterized in that, It further includes: A driving device arranged on the first fixed beam body for driving the rear lifting device to move along the longitudinal direction.

4. The bridge erection and transportation machine according to claim 1, characterized in that, It further includes: Web hole filling plates arranged in the first web hole and / or the second web hole and connected to the webs above and below the first web hole and / or the second web hole.

5. The bridge erection and transportation machine according to claim 1, characterized in that, The beam connection assembly includes: Outer connecting plates located outside the joints of adjacent two beam bodies and having overlapping parts with the two beam bodies respectively; Inner connecting plates located inside the joints of adjacent two beam bodies and having overlapping parts with the two beam bodies respectively; the inner connecting plates and the outer connecting plates are in corresponding positions and are connected by bolts; the adjacent two beam bodies are: the first fixed beam body and the first adjustable beam body, or the second fixed beam body and the first adjustable beam body, or the first fixed beam body and the second fixed beam body.

6. The bridge erection and transportation machine according to claim 5, characterized in that, Each of the adjacent two beam bodies is a box-shaped structure with a rectangular cross-section; Outer connecting plates and inner connecting plates are respectively arranged corresponding to the four faces at the joints of the adjacent two beam bodies.

7. The bridge erection and transportation machine according to claim 1, characterized in that, The main beam further includes: a second adjustable beam body detachably connected to the front end of the second fixed beam body; A second track is provided at the bottom of the second adjustable beam body, and the second track is docked with the first track provided at the bottom of the second fixed beam body so that the main legs can move on the first track and the second track.

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