Bridge transport and erection machine main beam

Abstract

The embodiment of the present application provides a main beam of a bridge transporter and erection machine, comprising: a first fixed beam body, a first adjustable beam body, and a second fixed beam body arranged in sequence along the longitudinal direction, the two ends of the first adjustable beam body are detachably connected to the first fixed beam body and the second fixed beam body respectively; the webs on both sides of the first fixed beam body are symmetrically provided with first web holes for accommodating the middle and rear lifting devices of the bridge transporter and erection machine and providing space for the longitudinal movement of the rear lifting devices, and the first web holes extend along the longitudinal direction. The main beam of the bridge transporter and erection machine provided in the embodiment of the present application can adapt to simply supported beams of various spans, and is applied to the bridge transporter and erection machine to hoist and erect simply supported beams of various spans.

Description

Technical Field

[0001] The present application relates to bridge construction technology, and in particular to a main beam of a bridge transport and erection machine. Background Art

[0002] As one of the main equipment for railway bridge construction, the bridge transporter and erection machine can lift concrete beams to the bridge site and erect them. It has the advantages of fast construction speed and flexibility. In the process of bridge erection, it does not require any parts to be disassembled, nor does it require auxiliary machinery or excessive manpower, which greatly improves the efficiency of bridge erection.

[0003] The length of the simple supported beam suitable for traditional railways is about 32 meters. At present, all integrated bridge transporters are designed to adapt to 32-meter simple supported beams. For the 40-meter simple supported beams of the current high-speed railway, the traditional bridge transporters cannot meet their requirements. The above problem can be solved by extending the length of the bridge transporter to adapt to the requirements of the 40-meter simple supported beam. However, with the advancement of technology, other lengths of simple supported beams will appear in the future. If a bridge transporter is designed for each length of simple supported beam, it will greatly waste resources. Summary of the invention

[0004] In order to solve one of the above-mentioned technical defects, a main beam of a bridge transport and erection machine is provided in an embodiment of the present application.

[0005] The first embodiment of the present application provides a main beam of a bridge transport and erection machine, comprising: a first fixed beam body, a first adjustable beam body, and a second fixed beam body arranged in sequence along a longitudinal direction, wherein two ends of the first adjustable beam body are detachably connected to the first fixed beam body and the second fixed beam body respectively;

[0006] The webs on both sides of the first fixed beam body are symmetrically provided with first web holes for accommodating the rear lifting device in the bridge transport and erection machine and providing space for the longitudinal movement of the rear lifting device, and the first web holes extend in the longitudinal direction.

[0007] The technical solution provided by the embodiment of the present application is that the main beam includes a first fixed beam body, a first adjustable beam body and a second fixed beam body which are arranged in sequence along the longitudinal direction, wherein two ends of the first adjustable beam body are detachably connected to the first fixed beam body and the second fixed beam body respectively, and when the first adjustable 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 adjustable 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; and, a front lifting device for hoisting the front end of the simply supported beam is fixed on the second fixed beam body, and a rear lifting device for hoisting the rear end of the simply supported beam is movably arranged on the first fixed beam body, and the rear lifting device moves longitudinally along the first web hole arranged on the first fixed beam body, so as to flexibly adapt to simply supported beams of different lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0009] Figure 1 A schematic diagram of preparing a through hole for a bridge transport and erection machine provided in an embodiment of the present application;

[0010] Figure 2 A schematic diagram of the structure of the main beam provided in an embodiment of the present application;

[0011] Figure 3 for Figure 1 Magnified view of area A in the middle;

[0012] Figure 4 for Figure 2 Longitudinal connection view of region B in the middle;

[0013] Figure 5 for Figure 2 Longitudinal connection view of the middle C region;

[0014] Figure 6 for Figure 2 Longitudinal connection view of region D in the middle;

[0015] Figure 7 for Figure 2 Middle EE cross-sectional view;

[0016] Figure 8 for Figure 7 Magnified view of area F in the middle;

[0017] Fig. 9 for Figure 2 A schematic diagram of a first fixed beam and a first adjusting beam;

[0018] Fig.10 for Fig. 9 Middle GG section view;

[0019] Fig.11 for Fig. 9 Middle HH section view;

[0020] Fig.12 is a schematic structural diagram of a second fixed beam and a second adjustable beam;

[0021] Fig.13 for Fig.12 Middle II section view.

[0022] Reference numerals:

[0023] 1-main beam; 11-first fixed beam; 111-first web hole; 112-first fixed beam upper flange plate; 113-first fixed beam lower flange plate; 114-first fixed beam upper web plate; 115-first fixed beam lower web plate; 116-first fixed beam upper partition plate; 117-first fixed beam lower partition plate; 12-first adjustment beam; 121-second web hole; 122-first adjustment beam upper flange plate; 123-first adjustment beam lower flange plate; 124-first adjustment beam web plate; 13-second fixed beam; 131-second fixed beam web plate; 1 32-first track; 133-second fixed beam upper flange plate; 134-second fixed beam lower flange plate; 135-second fixed beam upper web plate; 136-second fixed beam lower web plate; 137-second fixed beam upper partition plate; 138-second fixed beam lower partition plate; 14-driving device; 15-web hole filling plate; 16-outer connecting plate; 17-inner connecting plate; 18-second adjusting beam; 181-second track; 191-web flange; 192-flange plate reinforcement rib; 193-web reinforcement rib; 194-partition flange; 195-track reinforcement steel plate;

[0024] 2-Front lifting device;

[0025] 3-rear lifting device; 31-rear lifting beam; 32-rear lifting sling;

[0026] 4- Main legs;

[0027] 5-Front vehicle device;

[0028] 6- rear vehicle device;

[0029] 7-Middle leg;

[0030] 8-Winch system;

[0031] 9-Simply supported beam; 91-Bridge pier. DETAILED DESCRIPTION

[0032] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0033] This embodiment provides a main beam of a bridge transporter and erector, which can be used in a bridge transporter and erector for hoisting and erecting a simply supported beam. The bridge transporter and erector using the main beam provided by this embodiment can adapt to simply supported beams of various lengths.

[0034] Figure 1A schematic diagram of preparing a through hole for a bridge transport and erection machine provided in an embodiment of the present application, Figure 2 This is a schematic diagram of the structure of the main beam provided in the embodiment of the present application. Figure 1 and Figure 2 Taking the transport and erection machine shown as an example, the structure of the main beam is described in detail. Of course, the main beam provided in this embodiment is not limited to the use in the transport and erection machine provided in this embodiment. In addition to the transport and erection machine provided in this embodiment, the main beam can also be used in transport and erection machines of other structures, and adaptive modifications can be made to adapt to transport and erection machines of different structures. The preparation of the bridge transport and erection machine for passing through the hole is the process of transporting the simply supported beam to the site to be erected, lowering the main legs, and supporting the main legs on the bridge piers.

[0035] like Figure 1 and Figure 2 As shown, the bridge transport and erection machine provided in this embodiment includes: a main beam 1, a front lifting device 2, a rear lifting device 3 and main legs 4.

[0036] The length direction of the main beam 1 is the same as the erection direction of the simply supported beam 9, which is referred to as the longitudinal direction. The direction perpendicular to the longitudinal direction is referred to as the transverse direction, and the vertical direction is referred to as the vertical direction. The main beam 1 is the main structure of the rack transporter, and all components in the rack transporter are 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, which are arranged in sequence from back to front along the longitudinal direction, wherein the two 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.

[0037] The front lifting device 2 is fixedly arranged on the second fixed beam body 13, and is used to lift the front end of the simply supported beam 9. The rear lifting device 3 is arranged on the first fixed beam body 11, and can move relative to the first fixed beam body 11 in the longitudinal direction. The rear lifting device 3 is used to lift the rear end of the simply supported beam 9. The front lifting device 2 and the rear lifting device lift the two ends of the simply supported beam 9 respectively, and can drive the simply supported beam 9 to rise and fall.

[0038] The first fixed beam 11, the first adjustable beam 12, and the second fixed beam 13 in the main beam 1 can all be box-type structures. For example, each beam is a box-type 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 can also be other shapes, which is not limited in this embodiment.

[0039] The 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 in the longitudinal direction. The rear lifting device 3 is straddled on 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 hoisting requirements of the simply supported beam 9.

[0040] The main leg 4 is arranged on the second fixed beam body 13 and can move along the longitudinal direction relative to the second fixed beam body 13. The main leg 4 is located at the front end of the main beam 1 and is used to support the pier at the front end of the simply supported beam to be erected and support the main beam 1.

[0041] In addition, the bridge transporter also includes: a front vehicle device 5, a rear vehicle device 6, a middle support leg 7 and a winch 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 front vehicle device 5 and the rear vehicle device 6 have similar structures, including a main frame, a driving device and wheels. The driving device can drive the wheels to travel on the road, tunnel, and above the erected simply supported beam, thereby driving the main frame to move forward or backward along the longitudinal direction.

[0042] The bridge transport and erection machine meets the requirements of erecting beams at the tunnel entrance and exit, as well as the requirements of erecting beams in other application scenarios.

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

[0044] The main beam provided in this embodiment can adapt to simply supported beams of various lengths, and can be used to erect simply supported beams of 20 meters to 40 meters. For example, the main beam can adapt to both 32-meter simply supported beams commonly used in the art and 40-meter simply supported beams.

[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. The rear lifting device 3 is moved backward to a suitable position so that the distance between the rear lifting device 3 and the front lifting device 2 meets the hoisting requirements of the 40-meter simply supported beam.

[0046] When it is necessary to erect a 32-meter simply supported beam, based on the above content, the rear lifting device 3 is moved forward until the distance between it and the front lifting device 2 meets the hoisting requirements of the 32-meter simply supported beam.

[0047] When it is necessary to erect a 24-meter or 22-meter simply supported beam, the rear lifting device 3 is further moved forward until the distance between it and the front lifting device 2 meets the lifting requirement of the 24-meter or 22-meter simply supported beam; alternatively, 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 appropriately adjusting the position of the rear lifting device 3 to meet the lifting requirement of the 24-meter or 22-meter simply supported beam.

[0048] The technical solution provided by this embodiment is that the main beam includes a first fixed beam body, a first adjustable beam body and a second fixed beam body which are arranged in sequence along the longitudinal direction, wherein two ends of the first adjustable beam body are detachably connected to the first fixed beam body and the second fixed beam body respectively, and when the first adjustable 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 adjustable beam body is removed, the first fixed beam body and the second fixed beam body are directly connected, and can adapt to a shorter simply supported beam; and, a front lifting device for hoisting the front end of the simply supported beam is fixed on the second fixed beam body, and a rear lifting device for hoisting the rear end of the simply supported beam is movably arranged on the first fixed beam body, and the rear lifting device moves longitudinally along the first web hole arranged on the first fixed beam body, and can flexibly adapt to simply supported beams of different lengths.

[0049] On the basis of the above technical solution, this embodiment provides a specific implementation method of the rear lifting device 3: Figure 3 for Figure 1 A magnified view of area A. Figure 3 As shown, the rear lifting device 3 includes: a rear lifting beam 31 and a rear lifting sling 32. The rear lifting beam 31 passes through the first web holes 111 opened in the webs on both sides in the transverse direction, which is equivalent to being straddled on the first web holes 111 on both sides and overlapped on the webs below the first web holes 111. There are two rear lifting slings 32, which are connected to the two ends of the rear lifting beam 31 from the two outer sides of the first fixed beam body 11 respectively.

[0050] Figure 3 The figure shows that there are two rear lifting beams 31 arranged side by side, and the two rear lifting beams 31 are connected and move synchronously. The two rear lifting beams 31 can move in the first web hole 111 along the longitudinal direction, driving the rear lifting slings 32 at both ends to move in the first web hole 111 along the longitudinal direction.

[0051] A driving device 14 may be provided on the first fixed beam body 11 to drive the rear lifting beam 31 to move. The driving device 14 may be a hydraulic driving device, a compressed air driving device or an electric driving device. In this embodiment, a jack is used to drive the rear lifting beam 31 to move by hydraulic pressure.

[0052] After determining the approximate position of the rear lifting device 3, the driving device 14 is fixed to 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 to make a small adjustment to adapt to the length of the simply supported beam.

[0053] The structure of the rear lifting device 32 can be realized by referring to the commonly used methods in the art, and the connection and cooperation method with the hoisting system 8 can also be realized by referring to the commonly used methods in the art.

[0054] Furthermore, the opening of the first web hole 111 is extended to the front end of the first fixed beam body 11. The webs on both sides of the first adjustment beam body 12 are symmetrically provided with second web holes 121 extending in the longitudinal direction, and the opening of the second web hole 121 extends to the rear end of the first adjustment beam body 12. The first web hole 111 and the second web hole 121 are butted against each other 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. This is equivalent to the rear lifting device 3 being able to move not only within the first web hole 111, but also within the second web hole 121, thereby extending its moving distance and being able to adapt to more lengths of simply supported beams 9.

[0055] In addition, the web hole filling plates 15 are arranged in the first web hole 111 and / or the second web hole 121 and connected to the corresponding webs above and below, which can improve the strength of the webs. The number and position of the web hole filling plates 15 can be determined according to the position of the rear lifting device 3.

[0056] For example, when the rear lifting device 3 is located at the leftmost end of the first web hole 111, Figure 2 Four web plate hole filling plates 15 are arranged at intervals on the right side of the web plate hole filling plates 15. The three web plate hole filling plates 15 on the left are located in the first web plate hole 111 and connected to the upper and lower web plates corresponding to the first web plate hole 111. The rightmost web plate hole filling plate 15 is located at the position where the first web plate hole 111 and the second web plate hole 121 are connected. The top of the web plate hole filling plate 15 is respectively connected to the web plate above the first web plate hole 111 and the web plate above the second web plate hole 121, and the bottom is respectively connected to the side plate below the first web plate hole 111 and the web plate below the second web plate hole 121.

[0057] For another example, when the rear lifting device 3 is located in the middle of the first web hole 111 , web hole filling plates 15 may be provided on both sides of the rear lifting device 3 .

[0058] 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 may be arranged at intervals on the left side of the rear lifting device 3 .

[0059] The number and size of the web hole filling plates 15 can be flexibly set, and the position of the web hole filling plates 15 can be adjusted according to the position of the rear lifting device 3, so that the strength, rigidity and stability of the main beam 1 meet the requirements of bridge erection.

[0060] The connection between the above-mentioned beams can be achieved by various means. This embodiment provides a specific method: using a beam connection component to connect the first fixed beam 11 and the first adjustable beam 12, the second fixed beam 13 and the first adjustable beam 12, or the first fixed beam 11 and the second fixed beam 13.

[0061] The beam connection assembly specifically includes: an outer connection plate and an inner connection plate. The outer connection plate is located on the outer side of the joints of two adjacent beams and has overlapping parts with the two beams. The inner connection plate is located on the inner side of the joints of two adjacent beams and has overlapping parts with the two beams. The inner connection plate corresponds to the outer connection plate and is connected by bolts.

[0062] The two adjacent beams are: the first fixed beam 11 and the first adjustable beam 12, or the second fixed beam and the first adjustable beam 12, or the first fixed beam 11 and the second fixed beam 13. When the beam is a rectangular box beam, beam connection components are arranged on the four faces of the beam, that is, outer connecting plates are arranged on the outer sides of the upper flange plate, the lower flange plate and the web plates on both sides of the beam, and inner connecting plates are arranged on the inner sides, and the inner connecting plates are connected to the corresponding outer connecting plates.

[0063] Taking the connection between the first fixed beam 11 and the first adjusting beam 12 as an example, Figure 4 for Figure 2 Longitudinal connection view of region B in middle. Figure 4 The figure shows the connection between the first fixed beam 11 and the upper flange plate of the first adjustment beam 12. Figure 4 As shown, the first fixed beam upper flange plate 112 is butted with the first adjusting beam upper flange plate 122, the outer connecting plate 16 is located above the butt joint, and has overlapping parts with the first fixed beam upper flange plate 112 and the first adjusting beam upper flange plate 122 respectively; the inner connecting plate 17 is located below the butt joint, and has overlapping parts with the first fixed beam upper flange plate 112 and the first adjusting beam upper flange plate 122 respectively. Bolts are used to vertically penetrate the inner connecting plate 17, the first fixed beam upper flange plate 112 and the outer connecting plate 16 in sequence, and vertically penetrate the inner connecting plate 17, the first adjusting beam upper flange plate 122 and the outer connecting plate 16 in sequence, so as to realize connecting the upper flange plates of the first fixed beam 11 and the first adjusting beam 12 together.

[0064] Figure 5 for Figure 2 Longitudinal connection view of the middle C region. Figure 5 The figure shows the connection between the first fixed beam 11 and the lower flange plate of the first adjustment beam 12. Figure 5As shown, the first fixed beam body lower flange plate 113 is butted with the first adjusting beam body lower flange plate 123, the outer connecting plate 16 is located below the butt joint, and has overlapping parts with the first fixed beam body lower flange plate 113 and the first adjusting beam body lower flange plate 123 respectively; the inner connecting plate 17 is located above the butt joint, and has overlapping parts with the first fixed beam body lower flange plate 113 and the first adjusting beam body lower flange plate 123 respectively. Bolts are used to vertically penetrate the inner connecting plate 17, the first fixed beam body lower flange plate 113 and the outer connecting plate 16 in sequence, and vertically penetrate the inner connecting plate 17, the first adjusting beam body lower flange plate 123 and the outer connecting plate 16 in sequence, so as to realize connecting the lower flange plates of the first fixed beam body 11 and the first adjusting beam body 12 together.

[0065] Figure 6 for Figure 2 The longitudinal connection view of the middle D area, Figure 6 The connection between the web of the first adjustment beam 12 and the second fixed beam 13 is shown. Figure 6 As shown, the first adjusting beam body web 124 is butted with the second fixed beam body web 131, the outer connecting plate 16 is located on the outer side of the butt joint, and has overlapping parts with the first adjusting beam body web 124 and the second fixed beam body web 131 respectively, and the inner connecting plate 17 is located on the inner side of the butt joint, and has overlapping parts with the first adjusting beam body web 124 and the second fixed beam body web 131 respectively. Figure 5 It 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 body web 124 and the outer connecting plate 16 in the transverse direction, and sequentially pass through the inner connecting plate 17, the second fixed beam body web 131 and the outer connecting plate 16 in the transverse direction, so as to connect the webs of the first adjusting beam body 12 and the second fixed beam body 13 together.

[0066] Figure 7 for Figure 2 Middle EE section view, Figure 8 for Figure 7 Magnified view of region F. Figure 7 and Figure 8 The figure shows the connection between the first adjustment beam 12 and the second fixed beam 13. Figure 7 and Figure 8 As 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 the lower flange plates of the first adjusting beam 12 and the second fixed beam 13 are also connected in the above manner.

[0067] The main supporting 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 a roller is provided at the top of the main supporting leg 4 to slide along the first track 132 .

[0068] On the basis of the above technical solution, this embodiment provides another implementation method of the main beam 1: Figure 2 As shown, the main beam 1 also includes: a second adjustment beam body 18. The second adjustment beam body 18 is detachably connected to the front end of the second fixed beam body 13. A second track 181 is provided at the bottom of the second adjustment beam body 18, and the second track 181 is connected to the first track 132, so that the main support leg 4 can move on the first track and the second track. This is equivalent to extending the longitudinal movement distance of the main support leg 4, further meeting the need to erect a longer simply supported beam.

[0069] The second adjusting beam 18 and the second fixed beam 13 may also be connected via the above-mentioned beam connecting assembly.

[0070] On the basis of the above technical solution, this embodiment provides another implementation method of the main beam 1: the main beam 1 is composed of a plurality of segments. In this embodiment, nine segments are used to form the main beam 1. Figure 2 Segments 101 to 109 are shown. Among them, segments 101 and 102 are connected together to form a first fixed beam body 11, segment 103 is used as a first adjustable beam body 12, segments 104 to 108 are connected together to form a second fixed beam body 13, and segment 109 is equivalent to the above-mentioned second adjustable beam body 18. The length of the main beam 1 is adjusted by disassembling and assembling segments 103 and 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 by a beam body connection assembly, which is convenient for disassembly and assembly and transportation.

[0071] Each beam section is connected into a box-type 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 11 as an example, the first fixed beam 11 includes: a first fixed beam upper flange plate 112, a first fixed beam lower flange plate 113, a first fixed beam upper web plate 114 and a first fixed beam lower web plate 115. In the following description, the above four components are abbreviated, and the first fixed beam upper flange plate 112 is referred to as the upper flange plate 112, the first fixed beam lower flange plate 113 is referred to as the lower flange plate 113, the first fixed beam upper web plate 114 is referred to as the upper web plate 114, and the first fixed beam lower web plate 115 is referred to as the lower web plate 115.

[0072] Fig. 9 for Figure 2 Schematic diagram of the first fixed beam and the first adjusting beam, Fig.10 for Fig. 9 Middle GG section view, Fig.11 for Fig. 9 HH section view. Figures 9 to 11 As shown, the upper flange plate 112 and the lower flange plate 113 are aligned vertically, and there is a certain distance between them. There are two upper web plates 114, which are respectively connected to both sides of the upper flange plate 112 and are perpendicular to the upper flange plate 112. There are two lower web plates 115, 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 through a web flange 191.

[0073] The bottom end of the upper web 114 is recessed upward to form a first recessed portion, and the top end of the lower web 115 is recessed downward to form a second recessed portion. The first recessed portion and the second recessed portion are butted to form a first web hole 111. The first web hole 111 is a rounded hole. The opening edge is welded, and a plate is welded at the rounded 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.

[0074] Furthermore, the first fixed beam body 11 further includes: an upper partition plate 116 of the first fixed beam body and a lower partition plate 117 of the first fixed beam body (referred to as: upper partition plate 116 and lower partition plate 117, respectively), the upper partition plate 116 and the lower partition plate 117 are located in the area surrounded 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 vertically connected to the upper flange plate 112 and the upper web plate 114, respectively, and the lower partition plate 117 is vertically connected to the lower flange plate 113 and the lower web plate 115, respectively. The upper partition plate 116 and the lower partition plate 117 are connected to each other and to other plates through partition plate 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.

[0075] Furthermore, the main beam 1 further includes: a flange plate reinforcing rib 192 connected to the inner side of the upper flange plate 112 and the inner side of the lower flange plate 113. The flange plate reinforcing rib 192 has a "T"-shaped cross section and is arranged along the entire length of the upper flange plate 112 and the lower flange plate 113 to improve the strength of the upper flange plate 112 and the lower flange plate 113.

[0076] The main beam 1 also includes: a web reinforcement rib 193, which is connected to the inner side of the upper web 113 and the inner side of the lower web 114. The cross-section of the web reinforcement 193 is "T"-shaped and is arranged along the entire length of the upper web 113 and the lower web 114 to improve the strength of the upper web 113 and the lower web 114.

[0077] Fig.12 is a structural schematic diagram of a second fixed beam and a second adjustable beam, Fig.13 for Fig.12 Middle II section view. Fig.12 and Fig.13The schematic diagram of the second fixed beam 13 is shown, taking the segment 108 as an example. The second fixed beam is surrounded by the second fixed beam upper flange plate 133, the second fixed beam lower flange plate 134, the second fixed beam upper web plate 135, and the second fixed beam lower web plate 136 to form a box structure. The second fixed beam upper web plate 135 and the second fixed beam lower web plate 136 are connected by a web flange 191. The second fixed beam upper partition plate 137 is vertically connected to the second fixed beam upper flange plate 133 and the second fixed beam upper web plate 135, and the second fixed beam lower partition plate 138 is vertically connected to the second fixed beam lower flange plate 134 and the second fixed beam lower web plate 136. The second fixed beam upper partition plate 137 and the second fixed beam lower partition plate 138 are connected by a partition flange 194.

[0078] A first track 132 is welded below the lower flange plate 134 of the second fixed beam, and the first track 132 is used to bear the vertical reaction force of the main leg 4. In order to strengthen the connection of the first track 132, a track reinforcement steel plate 195 is welded between the lower web plate 136 of the second fixed beam and the lower flange plate 134 of the second fixed beam.

[0079] Similarly, the second rail 181 is welded to the bottom of the second adjusting beam 18 and is also reinforced with a rail reinforcement steel plate.

[0080] The main beam is connected by an upper flange plate, a lower flange plate, an upper web plate, a lower web plate, an upper partition plate and a lower partition plate, and multiple reinforcing ribs are used to improve the strength, so that the strength, rigidity and stability of the main beam meet the lifting requirements while reducing its own weight and improving the carrying capacity. The thickness of the flange plate can be reduced at the position where the main beam load is small, which can effectively reduce the dead weight, save raw materials and improve material utilization.

[0081] The above scheme provided in this embodiment can disassemble and assemble the first adjusting beam body 12 and the second adjusting beam body 18 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 of different spans below 40 meters, and realize stepless adjustment by adjusting the position of the rear lifting device 3 to adapt to simply supported beams of various lengths.

[0082] With regard to the current development status of my country's railways, 32-meter simply supported beams and 40-meter simply supported beams will coexist for a relatively long period of time. The main beam provided by this embodiment can be used to erect both 32-meter simply supported beams and 40-meter simply supported beams. It has strong flexibility, adjustable carrying capacity, and saves the construction cost of the transport and erection machine.

[0083] The main beam can be produced and sold as a separate product and applied to transport and rack machines of different structures.

[0084] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0085] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0086] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0087] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0088] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A main beam of a bridge transport and erection machine, characterized in that: include: A first fixed beam body, a first adjustable beam body, and a second fixed beam body are sequentially arranged along the longitudinal direction, wherein two ends of the first adjustable beam body are detachably connected to the first fixed beam body and the second fixed beam body respectively; The web plates on both sides of the first fixed beam body are symmetrically provided with first web plate holes for accommodating the rear lifting device in the bridge transport and erection machine and providing space for the longitudinal movement of the rear lifting device, and the first web plate holes extend in the longitudinal direction; the openings of the first web plate holes extend to the front end of the first fixed beam body; The webs on both sides of the first adjusting beam body are symmetrically provided with second web holes, and the second web holes extend in the longitudinal direction; the openings of the second web holes extend to the rear end of the first adjusting beam body; the first web holes are butted against the second web holes so that the rear lifting device can move in the area formed by the first web holes and the second web holes; It also includes: a web hole filling plate, which is arranged in the first web hole and / or the second web hole and is connected to the webs located above and below the first web hole and / or the second web hole; Also includes: A beam connecting assembly, used to connect the first fixed beam and the first adjustable beam, the second fixed beam and the first adjustable beam, or the first fixed beam and the second fixed beam; The beam body connection assembly comprises: An outer connecting plate is located at the outer side of the joint between 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 joint of two adjacent beam bodies and has overlapping parts with the two beam bodies respectively; the inner connecting plate corresponds to the outer connecting plate in position and is connected by bolts; the two adjacent beam bodies are: a first fixed beam body and a first adjustable beam body, or a second fixed beam body and a first adjustable beam body, or a first fixed beam body and a second fixed beam body.

2. The main beam of the bridge transport and erection machine according to claim 1, characterized in that: The two adjacent beams are each a box-type structure with a rectangular cross-section; The four surfaces at the joints of two adjacent beam bodies are respectively provided with outer connecting plates and inner connecting plates.

3. The main beam of the bridge transport and erection machine according to claim 2, characterized in that: The first fixed beam body comprises: an upper flange plate, a lower flange plate, an upper web plate and a lower web plate; There are two upper webs, which are respectively connected to both sides of the upper flange plate and are perpendicular to the upper flange plate; There are two lower web plates, which are respectively connected to both sides of the lower flange plate and are perpendicular to the lower flange plate; the lower web plate is connected to the upper web plate through a web plate flange; The bottom end of the upper web is recessed upward to form a first recessed portion, and the top end of the lower web is recessed downward to form a second recessed portion. The first recessed portion and the second recessed portion are butted against each other to form the first web hole.

4. The main beam of the bridge transport and erection machine according to claim 3, characterized in that: The first fixed beam body further includes: an upper partition plate and a lower partition plate; the upper partition plate and the lower partition plate are located in the area surrounded by the upper flange plate, the lower flange plate, the upper web plate and the lower web plate; The upper partition is vertically connected to the upper flange plate and the upper web plate respectively, and the lower partition is vertically connected to the lower flange plate and the lower web plate respectively; the upper partition is connected to the lower partition through a partition flange.

5. The main beam of the bridge transport and erection machine according to claim 3 or 4, characterized in that: Also includes: The flange plate reinforcing rib is connected to the inner side of the upper flange plate and the inner side of the lower flange plate; the cross section of the flange plate reinforcing rib is "T" shaped and is arranged along the entire length of the upper flange plate and the lower flange plate; The web reinforcement rib is connected to the inner side of the upper web and the inner side of the lower web; the cross section of the web reinforcement rib is "T" shaped and is arranged along the entire length of the upper web and the lower web.

6. The main beam of the bridge transport and erection machine according to claim 1, characterized in that: Also includes: A second adjusting beam body is detachably connected to a front end of the second fixed beam body; A second track is provided at the bottom of the second adjusting beam body, and the second track is connected to the first track arranged at the bottom of the second fixed beam body, so that the main support legs in the bridge transport machine can move on the first track and the second track.

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