Walking supporting structure of cantilever bridge fabrication machine and cantilever bridge fabrication machine

Abstract

The walking supporting structure comprises a rear upper cross beam, a main truss, a walking system and a bottom basket, the rear upper cross beam is arranged on the top of the walking system, the walking system is arranged on the top of a beam body, the main truss is arranged on the rear upper cross beam in a hanging mode and can abut against or be separated from the beam body, and the bottom basket is arranged on the main truss. Side beams extending downwards are arranged at the two ends of the rear upper cross beam, and the rear lower cross beam of the main truss and the rear lower cross beam of the bottom basket are connected with the side beams respectively. The device is applied to the field of bridge construction, through structural integration and rigid connection design, the construction process is safer, more stable and more flexible, the device is particularly suitable for construction scenes with narrow bridge spacing, and the problems that in the prior art, walking shaking is large, the installation sequence is complex, high-altitude operation is much, and adaptability to the bridge spacing is poor can be effectively solved.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, specifically to a traveling support structure for a cantilever bridge building machine and the cantilever bridge building machine itself. Background Technology

[0002] Most existing bridge-building machines use the following travel method Figure 1 The C-beam shown supports the main truss, and the traveling system drives the upper rear crossbeam to move the main truss forward. In this scheme, the load of the outer suspension point of the bottom basket needs to be transferred step by step through the main truss 3, C-beam 01, upper rear crossbeam 2, and the traveling system, which has the following obvious defects:

[0003] 1. The force transmission path is long and indirect, and the bottom basket and main truss are prone to shaking during the movement, which affects the construction stability; 2. During installation, the main truss must be hoisted first, and then the C-beams must be assembled. The procedure is strictly followed and involves working at height, which poses significant safety risks. 3. C-shaped beams require a large outward cantilever, which makes them unsuitable for use when the distance between the left and right lanes of a highway bridge is small, thus limiting their applicability. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention provides a traveling support structure for a cantilever bridge building machine and the cantilever bridge building machine itself. Through structural integration and rigid connection design, the construction process is made safer, more stable, and more flexible, especially suitable for construction scenarios with narrow bridge spacing. It can effectively solve problems such as large traveling sway, complex installation sequence, high-altitude operations, and poor adaptability to bridge spacing in the existing technology.

[0005] To achieve the above objectives, the present invention provides a traveling support structure for a cantilever bridge construction machine, including a rear upper crossbeam, a main truss, a traveling system and a bottom basket. The rear upper crossbeam is located on top of the traveling system, the traveling system is located on top of the beam, and the main truss is suspended from the rear upper crossbeam and can abut against or detach from the beam. Both ends of the upper rear crossbeam are provided with downward-extending side beams, and the lower rear crossbeams of the main truss and the bottom basket are respectively connected to the side beams.

[0006] In one embodiment, the side beam has a first through hole at the top and a second through hole at the bottom; The side beam is hung on the upper rear crossbeam through the first through hole, and the two ends of the lower rear crossbeam are respectively inserted through the second through holes of the two side beams.

[0007] In one embodiment, the top of the rear upper crossbeam is provided with two first limiting baffles at intervals corresponding to the connection of the side beam, and the side beam is located between the two first limiting baffles.

[0008] In one embodiment, the bottom of the rear lower crossbeam is provided with two second limiting baffles at intervals corresponding to the connection of the side beam, and the side beam is located between the two second limiting baffles.

[0009] In one embodiment, the side beam is fixed to the rear upper cross beam by bolting, snap-fitting, or welding; and / or The side beam and the rear lower crossbeam are fixed by bolting, snap-fitting, or welding.

[0010] In one embodiment, at least one side crossbeam is provided on the side beam; The first end of the side beam is fixedly connected to the side beam, and the second end of the side beam is fixedly connected to the main truss.

[0011] In one embodiment, a first reinforcing beam is connected between the second end of the side beam and the side beam.

[0012] In one embodiment, when there are two or more side beams, a second reinforcing beam connects two adjacent side beams.

[0013] In one embodiment, the rear upper crossbeam is a first rod-shaped structure, which includes a first straight section, a second straight section, and a third straight section connected in sequence. The two ends of the second straight section are respectively connected to the first straight section and the third straight section through inclined sections.

[0014] In one embodiment, the traveling support structure further includes a front upper crossbeam, which is located at the front end of the main truss, and the front lower crossbeam of the bottom basket is suspended from the front upper crossbeam; the front upper crossbeam is a second rod-shaped structure, which is detachably erected at the front end of the main truss along the transverse direction of the beam, and the two ends of the second rod-shaped structure do not exceed the outer side of the flange of the beam.

[0015] Based on the same concept as the foregoing embodiments, this application also provides a cantilever bridge building machine, which can be provided with the traveling support structure of the cantilever bridge building machine as described above.

[0016] Compared with the prior art, the present invention has at least the following beneficial technical effects: 1. The present invention provides a stable overall frame by setting downwardly extending side beams at both ends of the upper rear crossbeam and rigidly connecting the lower rear crossbeams of the main truss and the bottom basket to the side beams respectively. 2. The side beams and main trusses in this invention can be assembled on the ground to form a whole for hoisting. During installation, the side beams can act as lifting tools, and the installation sequence of the main trusses and the rear upper crossbeam can be flexibly and conveniently adjusted, which greatly reduces high-altitude assembly work and significantly improves safety. 3. In the traveling support structure of this invention, the side beams, main truss and bottom basket are rigidly connected as one unit during the traveling process, which effectively eliminates the swaying caused by the traditional suspension system and significantly enhances the traveling stability; 4. The side beam structure in this invention is compact, and together with the rod-shaped front and rear upper crossbeams, it does not require large cantilevering to the outside of the beam body, making the running support structure particularly suitable for highway bridges with small left and right spans, thus broadening the application range of the bridge building machine. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of C-beam support in existing technology; Figure 2 This is a side view of the traveling support structure in an embodiment of the present invention; Figure 3 This is a front view of the traveling support structure at the rear upper crossbeam in an embodiment of the present invention; Figure 4 This is a schematic diagram of a partial connection between the side beam and the rear upper cross beam in an embodiment of the present invention; Figure 5 This is a schematic diagram of a partial connection between the side beam and the rear lower crossbeam in an embodiment of the present invention.

[0019] Figure 6 This is a front view of the traveling support structure at the front upper crossbeam in an embodiment of the present invention; Figure 7 This is a construction schematic diagram of a continuous beam with narrow spacing between the left and right sides in an embodiment of the present invention, wherein: Figure 7 (a) is a construction diagram of a conventional C-shaped beam in a continuous beam construction scenario with narrow spacing between left and right sides. Figure 7 (b) is a construction diagram of the traveling support structure in the construction scenario of a continuous beam with narrow spacing between left and right sides in this embodiment.

[0020] Reference numerals: C-beam 01, front upper crossbeam 1, rear upper crossbeam 2, first straight section 201, second straight section 202, third straight section 203, inclined section 204, main truss 3, bottom basket 4, front lower crossbeam 401, rear lower crossbeam 402, running system 5, side beam 6, first limiting baffle 7, second limiting baffle 8, side crossbeam 9, first reinforcing beam 10, second reinforcing beam 11, beam body 12.

[0021] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0027] like Figure 2 , Figure 3The diagram shows a traveling support structure for a cantilever bridge-building machine disclosed in this embodiment. It mainly includes a front upper crossbeam 1, a rear upper crossbeam 2, a main truss 3, a base basket 4, and a traveling system 5. The front upper crossbeam 1 is fixed to the front end of the main truss 3 by bolts or welding. The front lower crossbeam 401 on the base basket 4 is suspended from the front upper crossbeam 1 by a structure such as a suspension rod or rope. The rear upper crossbeam 2 is located at the top of the traveling system 5, which is located at the top of the beam 12. The main truss 3 is suspended from the rear upper crossbeam 2 and can abut against or detach from the bottom surface of the flange of the beam. Both ends of the rear upper crossbeam 2 are provided with downwardly extending side beams 6, and the rear lower crossbeams 402 of the main truss 3 and the base basket 4 are rigidly connected to the side beams 6.

[0028] This embodiment forms a stable overall frame by setting downward-extending side beams 6 at both ends of the upper rear crossbeam 2, and rigidly connecting the lower rear crossbeams 402 of the main truss 3 and the base basket 4 to the side beams 6. Furthermore, in application, the side beams 6 and the main truss 3 can be assembled on the ground to form a whole for hoisting. During installation, the side beams 6 can act as lifting tools, and the installation sequence of the main truss 3 and the upper rear crossbeam 2 can be flexibly and conveniently adjusted, significantly reducing high-altitude assembly work and improving safety. During travel, the side beams 6, the main truss 3, and the base basket 4 are rigidly connected as a whole, effectively eliminating the swaying caused by traditional hoisting systems and significantly enhancing travel stability.

[0029] In this embodiment, the top end of the side beam 6 is provided with a first through hole and the bottom end is provided with a second through hole. The side beam 6 is hung on the upper rear crossbeam 2 through the first through hole, and the two ends of the lower rear crossbeam 402 are respectively passed through the second through holes on the two side beams 6 to facilitate the assembly between the side beam 6 and the upper rear crossbeam 2 and the lower rear crossbeam 402.

[0030] In practical applications, a rectangular frame can be directly used as the side beam 6. For example, the rectangular frame includes two short longitudinal beams, two long vertical beams, and several reinforcing longitudinal beams connecting the two long vertical beams. During connection, the top short longitudinal beam is hung on the rear upper crossbeam 2, the bottom short longitudinal beam is supported on the bottom of the rear lower crossbeam 402, and the two long vertical beams are connected and fixed to the main truss 3.

[0031] In a preferred embodiment, two first limiting baffles 7 are provided at intervals at the connection point between the top of the upper rear crossbeam 2 and the side beam 6. These baffles are, for example, two angle steel pieces bolted or welded to the top of the upper rear crossbeam 2. The side beam 6 is located between the two first limiting baffles 7 to prevent it from shifting on the upper rear crossbeam 2. Figure 4 As shown. More preferably, based on the first limiting baffle 7, the side beam 6 and the rear upper crossbeam 2 can be further connected and fixed by means of connectors such as pins and bolts, or the side beam 6 and the rear upper crossbeam 2 can be connected and fixed by welding.

[0032] In a preferred embodiment, two second limiting baffles 8 are provided at intervals at the connection point between the bottom of the rear lower crossbeam 402 and the side beam 6. These baffles are, for example, two angle steel pieces bolted or welded to the bottom of the rear lower crossbeam 402. The side beam 6 is located between the two second limiting baffles 8 to prevent it from shifting on the rear lower crossbeam 402. Figure 5 As shown. Similarly, more preferably, based on the second limiting baffle 8, the side beam 6 and the rear lower crossbeam 402 can be further connected and fixed by means of connectors such as pins and bolts, or the side beam 6 and the rear lower crossbeam 402 can be connected and fixed by welding.

[0033] In specific implementation, at least one side crossbeam 9 is provided on the side beam 6. For example, in this embodiment, there are two side crossbeams 9. In specific applications, only one side crossbeam 9 or more than three side crossbeams 9 can be provided. During connection, the first end of the side crossbeam 9 is fixedly connected to the side beam 6 by bolt connection, pin connection, or welding. The second end of the side crossbeam 9 is also fixedly connected to the main truss 3 by bolt connection, pin connection, or welding. Preferably, a first reinforcing beam 10 is connected between the second end of the side crossbeam 9 and the side beam 6 to enhance the connection stability between the side beam 6 and the side crossbeam 9. The first reinforcing beam 10 is also fixedly connected to the side crossbeam 9 and the side beam 6 by bolt connection, pin connection, or welding.

[0034] In a preferred embodiment, when there are two or more side beams 9, a second reinforcing beam 11 is connected between adjacent side beams 9. The second reinforcing beam 11 is also fixedly connected to the side beams 9 by means of bolt connection, pin connection or welding, so as to further enhance the connection stability between the side beams 6 and the side beams 9.

[0035] In practical applications, if the rectangular frame in the above example is used as the side beam 6, then the side beam 9, the first reinforcing beam 10, and the second reinforcing beam 11 need to be symmetrically set on the two long vertical beams to ensure structural symmetry, thereby making the load transfer more uniform.

[0036] It is worth noting that in specific applications, it is not limited to using a rectangular frame as the side beam 6. Straight beams or rectangular plates can also be used directly as the side beam 6. The connection is made by welding the side beam 6 to the upper rear crossbeam 2 and the lower rear crossbeam 402. The weld can be cut open when disassembling.

[0037] In this embodiment, the upper rear crossbeam 2 is a first rod-shaped structure, comprising a first straight section 201, a second straight section 202, and a third straight section 203 connected in sequence. The two ends of the second straight section 202 are respectively connected to the first straight section 201 and the third straight section 203 via inclined sections 204, resulting in an arched structure in the middle of the upper rear crossbeam 2. Figure 3 As shown, this improves the load-bearing capacity of the upper rear beam 2 and disperses stress, thereby enhancing structural stability.

[0038] refer to Figure 6 In this embodiment, the front upper crossbeam 1 is a second rod-shaped structure, which is detachably erected at the front end of the main truss 3 along the transverse direction of the beam 12. Both ends of the front upper crossbeam 1 do not extend beyond the outer edge of the flange of the beam 12. This allows the traveling support structure to operate without significant cantilevering outwards from the beam 12, thanks to the cooperation of the side beams 6 and the rod-shaped front and rear upper crossbeams 1 and 2. This makes the traveling support structure particularly suitable for highway bridges with small left-right spans, thus broadening the application range of the bridge-building machine. For example... Figure 7 As shown, Figure 7 (a) is a schematic diagram of a conventional C-beam in a construction scenario of a continuous beam with a narrow spacing between the left and right sides. It can be seen that its cantilever is large, which can easily lead to mutual interference between the left and right C-beams. Figure 7 (b) is a schematic diagram of the traveling support structure in the same scenario in this embodiment. Because it has no large overhang, it can effectively avoid structural interference and ensure construction safety and efficiency.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention. All equivalent structural transformations made under the inventive concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A traveling support structure for a cantilever bridge-building machine, comprising a rear upper crossbeam, a main truss, a traveling system, and a bottom basket, wherein the rear upper crossbeam is disposed on top of the traveling system, the traveling system is disposed on top of the beam, and the main truss is suspended from the rear upper crossbeam and can abut against or detach from the beam, characterized in that: Both ends of the upper rear crossbeam are provided with downward-extending side beams, and the lower rear crossbeams of the main truss and the bottom basket are respectively connected to the side beams.

2. The traveling support structure of the cantilever bridge-building machine according to claim 1, characterized in that, The top of the side beam is provided with a first through hole, and the bottom is provided with a second through hole; The side beam is hung on the upper rear crossbeam through the first through hole, and the two ends of the lower rear crossbeam are respectively inserted through the second through holes of the two side beams.

3. The traveling support structure of the cantilever bridge-building machine according to claim 2, characterized in that, The top of the upper rear crossbeam is provided with two first limiting baffles at intervals corresponding to the connection of the side beam, and the side beam is located between the two first limiting baffles.

4. The traveling support structure of the cantilever bridge-building machine according to claim 2, characterized in that, The bottom of the lower rear crossbeam is provided with two second limiting baffles at intervals corresponding to the connection of the side beam, and the side beam is located between the two second limiting baffles.

5. The traveling support structure of the cantilever bridge-building machine according to claim 1, 2, 3, or 4, characterized in that, The side beam is fixed to the rear upper cross beam by bolting, snap-fitting, or welding; and / or The side beam and the rear lower crossbeam are fixed by bolting, snap-fitting, or welding.

6. The traveling support structure of the cantilever bridge-building machine according to claim 1, 2, 3, or 4, characterized in that, At least one side crossbeam is provided on the side beam; The first end of the side beam is fixedly connected to the side beam, and the second end of the side beam is fixedly connected to the main truss.

7. The traveling support structure of the cantilever bridge-building machine according to claim 6, characterized in that, A first reinforcing beam connects the second end of the side beam to the side beam.

8. The traveling support structure of the cantilever bridge-building machine according to claim 6, characterized in that, When there are two or more side beams, a second reinforcing beam connects two adjacent side beams.

9. The traveling support structure of the cantilever bridge-building machine according to claim 1, 2, 3, or 4, characterized in that, The upper rear crossbeam is a first rod-shaped structure, which includes a first straight section, a second straight section, and a third straight section connected in sequence. The two ends of the second straight section are respectively connected to the first straight section and the third straight section through inclined sections.

10. The traveling support structure of the cantilever bridge-building machine according to claim 1, 2, 3, or 4, wherein the traveling support structure further includes a front upper crossbeam, the front upper crossbeam being disposed at the front end of the main truss, and the front lower crossbeam of the bottom basket being suspended from the front upper crossbeam; characterized in that, The front upper crossbeam is a second rod-shaped structure, which is detachably erected at the front end of the main truss along the transverse direction of the beam. The two ends of the second rod-shaped structure do not extend beyond the outer side of the flange of the beam.

11. A cantilever bridge-building machine, characterized in that, The cantilever bridge building machine is provided with a traveling support structure as described in any one of claims 1 to 10.

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