A continuous walking bridge machine

Abstract

This invention discloses a continuous traveling bridge-building machine, comprising a track, a main truss assembly, and a base basket. The track is positioned along a first direction on a pre-cast beam. The main truss assembly has a triangular configuration with a high center and low ends in the first direction, and its front and middle sections are pressed onto the track via sliding components. The rear ends of the main truss assembly and the track are respectively provided with a first anchoring mechanism and a second anchoring mechanism. The front end of the base basket is connected to the front end of the main truss assembly via a first hanging mechanism, and the rear end of the base basket is connected to the middle of the main truss assembly and / or the pre-cast beam via a second hanging mechanism. This invention is applied to the field of hanging basket construction and can effectively solve the technical problems of existing bridge-building machines, such as high center of gravity, low traveling efficiency, large construction workload, low material utilization, and structural interference.

Description

Technical Field

[0001] This invention relates to the field of hanging basket construction technology, specifically a continuous traveling bridge building machine. Background Technology

[0002] Cantilever casting is the most commonly used method for constructing long-span continuous beam bridges, with the core equipment being a bridge-building machine (hanging basket). Existing bridge-building machines mainly consist of a base basket, a suspension system, a guide beam, a main truss, tracks, and a front upper crossbeam, forming a rhomboid configuration. The equipment and construction loads are directly applied to the base basket and guide beam. The front of the base basket and guide beam transfers the load to the front upper crossbeam via the suspension system, while the rear is directly suspended from the already cast concrete segments. In the casting state, the tail of the main truss needs to be anchored to ensure stress balance; in the traveling state, the anchorage of the tail of the main truss needs to be released, and the tracks are instead anchored. The tail of the main truss is held in place by anti-locking wheels to achieve stress balance.

[0003] However, in specific engineering applications, the existing bridge-building machines mentioned above have the following drawbacks: 1. High center of gravity and high safety risk: All front loads are concentrated on the front end of the main truss through the front upper crossbeam. In order to control the overall deformation, the main truss must be designed to be high, which causes the overall center of gravity of the bridge building machine to shift upward, significantly increasing the risk of workers working at height. It is also not applicable to projects with height restrictions such as high-voltage lines above the construction site. 2. Low running efficiency and prominent safety hazards: During the running process, the track anchor points need to be repeatedly disassembled and reassembled at certain intervals. The rear reverse hanging device will interfere with the anchor points, resulting in discontinuous running and low construction efficiency. At the same time, the tension area of ​​the track has extremely high requirements for weld strength, which poses a risk of breakage. 3. Poor applicability: The outer guide beam is relatively long. When the boss of block #0 extends to the top of the beam, there is interference between the guide beam and the boss, which affects the ease of use.

[0004] 4. Large workload: The anchoring of the rear end of the outer guide beam, the anchoring of the track, and the anchoring of the main truss during the pouring process require a large number of anchor holes to be reserved on the beam surface, which significantly increases the workload of pre-embedding and subsequent sealing. 5. Structural interference problem: The tracks of existing bridge-building machines are usually laid directly above the web, while the web contains vertical prestressing tendons. When the tracks or main truss travel, they are very likely to interfere with the prestressing tendons, affecting the construction progress. 6. Low material utilization: The track is only stressed when it is running and completely idle when it is being poured. This causes the track to be close to the beam surface during pouring, affecting the work of personnel above the web. In addition, the load-bearing capacity of the track is not effectively utilized, which means that the main truss has to bear the entire pouring load alone, so it has to be designed to be bulky and heavy. Summary of the Invention

[0005] To address the shortcomings of the existing technology, this invention provides a continuous traveling bridge-building machine that can effectively solve the technical problems of existing bridge-building machines, such as high center of gravity, low traveling efficiency, large construction workload, low material utilization, and structural interference.

[0006] To achieve the above objectives, the present invention provides a continuous traveling bridge building machine, including a track, a main truss assembly and a bottom basket, wherein the track is arranged on the cast-in-place beam along a first direction; The main truss assembly has a triangular configuration with a high middle and low ends in the first direction, and the front end and middle part of the main truss assembly are pressed on the track. The rear end of the main truss assembly and the track are respectively provided with a first anchoring mechanism and a second anchoring mechanism. The front end of the bottom basket is connected to the front end of the main truss assembly via a first hanging mechanism, and the rear end of the bottom basket is connected to the middle part of the main truss assembly and / or the cast-in-place beam via a second hanging mechanism.

[0007] In one embodiment, the main truss assembly includes a main truss, a front crossbeam, and a middle crossbeam. The main truss has a triangular configuration that is high in the middle and low at both ends in the first direction. The front crossbeam is supported at the front end of the main truss, and the middle crossbeam is fixedly installed in the middle of the main truss. The sliding assembly includes a first slide block and a second slide block. The front crossbeam is pressed onto the track via the first slide block, and the front end of the bottom basket is connected to the front crossbeam and / or the front end of the main truss via a first suspension mechanism. The middle crossbeam is pressed onto the track by a second sliding seat, and the rear end of the bottom basket is connected to the middle crossbeam and / or the cast-in-place beam by a second hanging mechanism.

[0008] In one embodiment, a first hydraulic support is provided between the front crossbeam and the first slide block, and a second hydraulic support is provided between the front crossbeam and the main truss; The hydraulic oil chambers of the first hydraulic support and the second hydraulic support are interconnected.

[0009] In one embodiment, both the first hydraulic support and the second hydraulic support are plunger-type hydraulic cylinders, and their hydraulic oil chambers are connected to form a closed isobaric system. The ratio of the piston cross-sectional area of ​​the first hydraulic support to that of the second hydraulic support is matched with the stiffness ratio of the track and the main truss, which is used to automatically distribute the load during the pouring process, so that the track and the main truss can share the pouring load.

[0010] In one embodiment, the main truss assembly has a downward-facing hydraulic cylinder assembly in the middle, and the hydraulic cylinder assembly is located directly above the cast-in-place beam.

[0011] In one embodiment, the extension and retraction direction of the cylinder assembly is toward the web of the cast beam.

[0012] In one embodiment, the continuous traveling bridge-building machine has three states: a pouring state, a track-traveling state, and a main truss-traveling state. In the casting state, the rear end of the main truss assembly is anchored to the cast beam through the first anchoring mechanism, the rear end of the track is anchored to the cast beam through the second anchoring mechanism, the middle part of the main truss assembly is supported directly above the web of the cast beam through the hydraulic cylinder assembly, and the load of the front crossbeam is transferred to the track through the first hydraulic support and the first slide, and at the same time transferred to the front end of the main truss through the second hydraulic support. In the track-traveling state, the middle part of the main truss assembly is supported directly above the web of the cast-in-place beam by the hydraulic cylinder assembly, the first slide and the second slide are separated from the track, and the second anchoring mechanism between the track and the cast-in-place beam is released; In the main truss traveling state, the rear end of the track is anchored to the cast beam by the second anchoring mechanism, the hydraulic cylinder assembly in the middle of the main truss assembly is retracted, the first slide and the second slide are supported on the track, and the first anchoring mechanism between the rear end of the main truss assembly and the cast beam is released.

[0013] In one embodiment, the continuous traveling bridge-building machine also includes an outer guide beam, and C-shaped hooks are provided at both ends of the front crossbeam and both ends of the middle crossbeam; The outer guide beam is supported on the C-shaped hook.

[0014] In one embodiment, the main truss is assembled from a number of diagonal, vertical, and horizontal members by welding and / or pins.

[0015] In one embodiment, the track is positioned directly above the flange of the cast beam to avoid interference with the vertical prestressing tendons within the web of the cast beam.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: 1. This invention adopts a triangular main truss structure with a high middle and low ends. Compared with the traditional diamond-shaped main truss, it significantly reduces the overall height and center of gravity of the main truss while ensuring the same load-bearing capacity. This not only reduces the relative height of high-altitude operations and reduces the risk of falls, but also allows it to be used normally in projects with height restrictions such as high-voltage lines. 2. This invention simplifies the force balance of the main truss during travel from the traditional system where the middle support point of the main truss is supported by the upward force of the track, the front support point is subjected to the downward pressure of the front crossbeam, and the rear support point is subjected to the downward tension of the track, to a simply supported force system where the front and middle supports of the main truss are supported by the upward force of the track. This completely eliminates the rear reverse wheel structure. During travel, the rear end of the track remains continuously anchored, eliminating the need for repeated disassembly and assembly of the anchor points. This achieves uninterrupted continuous travel, significantly improving construction efficiency. Furthermore, during travel, the track as a whole is bent, but the contact area between the track and the slide is subjected to pressure, which reduces the requirements for the track welds and effectively avoids the risk of weld breakage caused by track tension. 3. In the preferred embodiment of the present invention, by setting up a first hydraulic support and a second hydraulic support that are interconnected, the casting load can be proportionally distributed between the track and the main truss. The track is transformed from a traditional idle component into a parallel load-bearing beam, and its load-bearing capacity is fully utilized. In addition, when in application, the piston area ratio of the first hydraulic support and the second hydraulic support can be adjusted according to the stiffness ratio of the track and the main truss to make their deformation coordinated. Thus, while ensuring the overall structural strength and stiffness, the size and weight of the main truss are greatly reduced, thereby reducing the manufacturing cost and transportation difficulty of the equipment.

[0017] 4. In the preferred embodiment of the present invention, the outer guide beam is directly supported on the C-shaped hooks fixed to the front crossbeam and the middle crossbeam, without the need to extend backward and anchor to the already cast beam segment, which greatly shortens the length of the outer guide beam and fundamentally avoids the interference problem with the 0# block boss, and is suitable for various complex bridge structure forms. 5. The outer guide beam in this invention does not require pre-reserved anchoring holes on the beam surface. At the same time, the number of track anchoring points and main truss anchoring points is also significantly reduced compared with the traditional structure, which significantly reduces the workload of pre-embedding and subsequent hole sealing, and speeds up the construction progress. 6. In the preferred embodiment of the present invention, the track is laid above the flange plate of the cast beam, completely avoiding the position directly above the web plate, thus eliminating the possibility of interference between the track and the vertical prestressing tendons in the web plate, and facilitating construction operations. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a side view of the continuously traveling bridge-building machine in an embodiment of the present invention; Figure 2This is a front view of the continuous traveling bridge-building machine in the middle of the main truss assembly in an embodiment of the present invention; Figure 3 This is a front view of the continuous traveling bridge-building machine at the front end of the main truss assembly in an embodiment of the present invention; Figure 4 This is a front view of the continuous traveling bridge-building machine at the rear end of the main truss assembly in an embodiment of the present invention; Figure 5 This is a schematic diagram of the continuous traveling bridge-building machine in the first step of an embodiment of the present invention; Figure 6 This is a schematic diagram of the continuous traveling bridge-building machine in the second step according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the continuous traveling bridge-building machine in the third step of an embodiment of the present invention; Figure 8 This is a schematic diagram of the continuous traveling bridge-building machine in the fourth step of an embodiment of the present invention; Figure 9 This is a schematic diagram of the continuous traveling bridge-building machine in the fifth step of an embodiment of the present invention.

[0020] Reference numerals: 1. Track; 2. Base basket; 3. Cast-in-place beam; 4. First anchoring mechanism; 5. Second anchoring mechanism; 6. First hanging mechanism; 7. Second hanging mechanism; 8. Main truss; 9. Front crossbeam; 10. Middle crossbeam; 11. First slide; 12. Second slide; 13. First hydraulic support; 14. Second hydraulic support; 15. Inner guide beam; 16. Outer guide beam; 17. C-hook.

[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 feasible for those skilled in the art. If 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 Figures 1 to 4 The diagram shows a continuous traveling bridge-building machine disclosed in this embodiment, which mainly includes a track 1, a main truss assembly, and a base basket 2. The track 1 is arranged on the cast-in-place beam 3 along a first direction, which is parallel to the length direction of the cast-in-place beam 3. The main truss assembly has a triangular configuration with a higher middle section and lower ends in the first direction. The front and middle sections of the main truss assembly are pressed onto the track 1 by sliding components. The rear ends of the main truss assembly and the track 1 are respectively provided with a first anchoring mechanism 4 and a second anchoring mechanism 5. The front end of the base basket 2 is connected to the front end of the main truss assembly through a first hanging mechanism 6, and the rear end of the base basket 2 is connected to the middle section of the main truss assembly and / or the cast-in-place beam 3 through a second hanging mechanism 7.

[0028] In this embodiment, the main truss assembly includes a main truss 8, a front crossbeam 9, and a middle crossbeam 10. The main truss 8 has a triangular structure with a high center and low ends in the first direction, and is assembled from several diagonal, vertical, and horizontal members by welding and / or pins. The front crossbeam 9 is supported at the front end of the main truss 8, the middle crossbeam 10 is fixed at the middle of the main truss 8, and the first anchoring mechanism 4 is located at the rear end of the main truss 8. A hydraulic cylinder assembly is located downwards in the middle of the main truss 8, and the hydraulic cylinder assembly is positioned directly above the cast-in-place beam. Preferably, there are at least two hydraulic cylinder assemblies, each located on both sides of the bottom of the main truss 8, facing the webs of the cast-in-place beam on the left and right sides, so that the hydraulic cylinder assembly can stably support the main truss 8 during the casting process. The sliding assembly includes a first sliding block 11 and a second sliding block 12. The front crossbeam 9 is pressed onto the track 1 via the first sliding block 11, and the front end of the basket 2 is connected to the front crossbeam 9 and / or the front end of the main truss 8 via the first hanging mechanism 6. The middle crossbeam 10 is pressed onto the track 1 via the second sliding block 12, and the rear end of the basket 2 is connected to the middle crossbeam 10 and / or the cast-in-place beam 3 via the second hanging mechanism 7. This simplifies the complex cantilevered force system of the traditional bridge-building machine's main truss, where the rear end is under tension and the front end is under compression, into a simply supported force system where both the front and middle supports of the main truss are supported upwards by the track 1, completely eliminating the rear anti-locking wheel device required in traditional structures. At the same time, compared to the traditional rhomboid main truss, the triangular main truss has a lower overall height under the same load-bearing capacity, effectively lowering the center of gravity of the equipment.

[0029] In a preferred embodiment, a first hydraulic support 13 is provided between the front crossbeam 9 and the first slide block 11, and a second hydraulic support 14 is provided between the front crossbeam 9 and the main truss 8. The hydraulic oil chambers of the first hydraulic support 13 and the second hydraulic support 14 are connected to form a closed hydraulic system.

[0030] Specifically, both the first hydraulic support 13 and the second hydraulic support 14 are plunger-type hydraulic cylinders, and their hydraulic chambers are interconnected. That is, the rod-side chambers of the first hydraulic support 13 and the second hydraulic support 14 are connected through a pipeline, while their rodless chambers are connected through another pipeline, thus forming a closed, equal-pressure system. The ratio of the plunger cross-sectional areas of the first hydraulic support 13 and the second hydraulic support 14 matches the stiffness ratio of the track 1 and the main truss 8, used to automatically distribute the load during the pouring process, allowing the track 1 and the main truss 8 to share the pouring load. This closed hydraulic system achieves purely mechanical automatic distribution of the pouring load without any sensors, electrical control systems, or manual intervention, resulting in extremely high operational reliability. In addition, the load distribution ratio can be precisely matched with the stiffness characteristics of track 1 and main truss 8 by adjusting the cross-sectional area of ​​the plunger, so that the deformation of the two is coordinated and consistent, maximizing their respective load-bearing capacity. Compared with the rigid connection method, the design cross-sectional size and overall weight of main truss 8 can be further reduced, while effectively reducing the overall structural deformation during the casting process and improving the alignment accuracy and construction quality of the beam casting.

[0031] The continuous traveling bridge-building machine in this embodiment also includes an inner guide beam 15 and an outer guide beam 16. The front end of the inner guide beam 15 is connected to the front crossbeam 9 via a suspension rod, and the rear end of the inner guide beam 15 is suspended on the already cast beam segment via a conventional carriage. Both ends of the front crossbeam 9 and both ends of the middle crossbeam 10 are equipped with C-shaped hooks 17, and the outer guide beam 16 is supported on the C-shaped hooks 17. Therefore, it is not necessary to extend the outer guide beam 16 backward and anchor it to the already cast beam segment, which greatly shortens the length of the outer guide beam 16 and fundamentally avoids the interference problem with the 0# block boss. It is suitable for various complex bridge structure forms.

[0032] It is worth noting that in specific applications, the outer guide beam 16 can also be supported on the C-hook 17 and connected to the front crossbeam 9 and the middle crossbeam 10 via a hanger rod to improve structural stability. This eliminates the need to pre-drill anchor holes for the outer guide beam 16 on the beam surface, effectively reducing the workload of pre-embedding and subsequent hole sealing. Alternatively, the C-hook 17 can be omitted, and the outer guide beam 16 can be directly connected to the front crossbeam 9 and the middle crossbeam 10 via a hanger rod.

[0033] In this embodiment, the track 1 is located directly above the flange plate of the cast beam 3, thereby completely avoiding the position directly above the web plate. This eliminates the possibility of interference between the track 1 and the vertical prestressing tendons inside the web plate, and facilitates construction operations.

[0034] The continuous traveling bridge-building machine in this embodiment has three states: pouring, track traveling, and main truss traveling. In the pouring state, the rear end of the main truss 8 is anchored to the poured beam 3 via the first anchoring mechanism 4, while the rear end of the track 1 is anchored to the poured beam 3 via the second anchoring mechanism 5. The middle part of the main truss 8 is supported directly above the web of the poured beam via a hydraulic cylinder assembly. In this state, the inner rear end of the basket 2 is connected to the bottom plate of the poured beam 3 via a portion of the second hanging mechanism 7, and the outer rear end of the basket 2 is connected to the middle of the main truss assembly via another portion of the second hanging mechanism 7. The front end of the basket 2 is connected to the front crossbeam 9 via the first hanging mechanism 6. The load of the front crossbeam 9 is transferred to the track 1 via the first hydraulic support 13 and the first sliding block 11, and simultaneously transferred to the front end of the main truss 8 via the second hydraulic support 14. This allows the track 1 and the main truss 8 to form a parallel load-bearing system to jointly bear the pouring load, making full use of the structural rigidity of the track 1 and avoiding the waste of material by leaving the track 1 completely idle in the pouring state. In addition, the triangular main truss structure, which is high in the middle and low at both ends, can significantly reduce the design height and overall weight of the main truss components while ensuring the overall load-bearing capacity and deformation control requirements. This significantly lowers the overall center of gravity of the equipment, improves construction safety, and meets the construction requirements for height-restricted conditions.

[0035] In the track running state, the middle part of the main truss 8 is supported directly above the web of the cast beam by the hydraulic cylinder assembly, thereby lifting the first slide 11 and the second slide 12 away from the track 1, and at the same time removing the second anchoring mechanism 5 between the track 1 and the cast beam, so that the track 1 can be driven to move forward. In the main truss traveling state, the rear end of track 1 is anchored to the cast beam 3 via the second anchoring mechanism 5. Simultaneously, the hydraulic cylinder assembly in the middle of the main truss 8 is retracted, allowing the first slide block 11 and the second slide block 12 to support the track 1. In this state, the track 1 is bent as a whole, forming a simply supported beam stress system, completely eliminating the need for the rear reverse-hook wheel structure required by traditional bridge-building machines. During travel, the main truss 8 is driven forward along track 1 by the drive device, simultaneously moving the bottom basket 2 forward to the construction position of the next beam segment. During travel, the second anchoring mechanism 5 maintains continuous anchoring, eliminating the need for repeated disassembly and reassembly of the track 1 anchor points. This effectively avoids the interference problem between the traditional rear reverse-hook device and the anchor points, achieving uninterrupted continuous travel of the bridge-building machine and significantly improving travel efficiency and construction safety.

[0036] refer to Figures 5 to 9 This is a schematic diagram of the continuous traveling bridge-building machine in this embodiment, specifically including: The first step involves anchoring the main truss 8 to the cast-in-place beam 3 using the first anchoring mechanism 4, and dismantling the second anchoring mechanism 5 between the track 1 and the cast-in-place beam 3. Simultaneously, the middle section of the main truss 8 is supported directly above the web of the cast-in-place beam by a hydraulic cylinder assembly, lifting the first slide block 11 and the second slide block 12 away from the track 1. Figure 5 As shown; The second step involves moving track 1 forward, during which the main truss 8 remains fixed. Figure 6 As shown; The third step involves using the second anchoring mechanism 5 to anchor the tail end of the track 1 to the cast beam 3, and retracting the hydraulic cylinder assembly in the middle of the main truss 8, so that the first slide block 11 and the second slide block 12 are supported on the track 1. Simultaneously, the first anchoring mechanism 4 between the main truss 8 and the cast beam 3 is removed, as is the second hanging mechanism 7 between the rear end of the basket 2 and the cast beam 3. The main truss 8 is then driven to slide forward along the track 1, simultaneously moving the basket 2 forward to the construction position of the next beam segment. Figure 7 As shown; The fourth step is to use the first anchoring mechanism 4 to anchor the tail end of the main truss 8 to the already cast beam 3, that is... Figure 8 As shown; Fifth step: Remove the second anchoring mechanism 5 between track 1 and the cast beam 3. Simultaneously, the middle part of the main truss 8 is supported directly above the web of the cast beam via a hydraulic cylinder assembly. After lifting the first slide block 11 and the second slide block 12 away from track 1, drive track 1 backward. At this point, there is no need to anchor track 1. Figure 9 As shown, this facilitates on-site rebar tying and prevents the track from obstructing beam surface work. After the rebar is tied, the track is driven forward, and then the second anchoring mechanism 5 is used again to anchor the tail end of the track 1 to the already poured beam 3. Figure 5 The state shown.

[0037] 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 continuous traveling bridge-building machine, characterized in that, Includes a track, a main truss assembly, and a base basket, wherein the track is arranged on the cast-in-place beam along a first direction; The main truss assembly has a triangular configuration with a high middle and low ends in the first direction, and the front end and middle part of the main truss assembly are pressed onto the track by a sliding assembly. The rear end of the main truss assembly and the track are respectively provided with a first anchoring mechanism and a second anchoring mechanism. The front end of the bottom basket is connected to the front end of the main truss assembly via a first hanging mechanism, and the rear end of the bottom basket is connected to the middle part of the main truss assembly and / or the cast-in-place beam via a second hanging mechanism.

2. The continuous traveling bridge-building machine according to claim 1, characterized in that, The main truss assembly includes a main truss, a front crossbeam, and a middle crossbeam. The main truss has a triangular configuration with a high middle and low ends in the first direction. The front crossbeam is supported at the front end of the main truss, and the middle crossbeam is fixed at the middle of the main truss. The sliding assembly includes a first slide block and a second slide block. The front crossbeam is pressed onto the track via the first slide block, and the front end of the bottom basket is connected to the front crossbeam and / or the front end of the main truss via a first suspension mechanism. The middle crossbeam is pressed onto the track by a second sliding seat, and the rear end of the bottom basket is connected to the middle crossbeam and / or the cast-in-place beam by a second hanging mechanism.

3. The continuous traveling bridge-building machine according to claim 2, characterized in that, A first hydraulic support is provided between the front crossbeam and the first slide block, and a second hydraulic support is provided between the front crossbeam and the main truss; The hydraulic oil chambers of the first hydraulic support and the second hydraulic support are interconnected.

4. The continuous traveling bridge-building machine according to claim 3, characterized in that, Both the first hydraulic support and the second hydraulic support are plunger-type hydraulic cylinders, and their hydraulic oil chambers are connected to form a closed isobaric system. The ratio of the piston cross-sectional area of ​​the first hydraulic support to that of the second hydraulic support is matched with the stiffness ratio of the track and the main truss, which is used to automatically distribute the load during the pouring process, so that the track and the main truss can share the pouring load.

5. The continuous traveling bridge-building machine according to claim 3 or 4, characterized in that, The main truss assembly has a downward-facing hydraulic cylinder assembly in the middle, and the hydraulic cylinder assembly is located directly above the cast-in-place beam.

6. The continuous traveling bridge-building machine according to claim 5, characterized in that, The extension and retraction direction of the hydraulic cylinder assembly is toward the web of the cast beam.

7. The continuous traveling bridge-building machine according to claim 6, characterized in that, The continuous traveling bridge-building machine has three modes: pouring mode, track-traveling mode, and main truss-traveling mode. In the casting state, the rear end of the main truss assembly is anchored to the cast beam through the first anchoring mechanism, the rear end of the track is anchored to the cast beam through the second anchoring mechanism, the middle part of the main truss assembly is supported directly above the web of the cast beam through the hydraulic cylinder assembly, and the load of the front crossbeam is transferred to the track through the first hydraulic support and the first slide, and at the same time transferred to the front end of the main truss through the second hydraulic support. In the track-traveling state, the middle part of the main truss assembly is supported directly above the web of the cast-in-place beam by the hydraulic cylinder assembly, the first slide and the second slide are separated from the track, and the second anchoring mechanism between the track and the cast-in-place beam is released; In the main truss traveling state, the rear end of the track is anchored to the cast beam by the second anchoring mechanism, the hydraulic cylinder assembly in the middle of the main truss assembly is retracted, the first slide and the second slide are supported on the track, and the first anchoring mechanism between the rear end of the main truss assembly and the cast beam is released.

8. The continuous traveling bridge-building machine according to claim 2, 3, or 4, characterized in that, It also includes an outer guide beam, and both ends of the front crossbeam and both ends of the middle crossbeam are provided with C-shaped hooks; The outer guide beam is supported on the C-shaped hook.

9. The continuous traveling bridge-building machine according to claim 2, 3, or 4, characterized in that, The main truss is assembled from several diagonal, vertical, and horizontal members by welding and / or pins.

10. The continuous traveling bridge-building machine according to claim 1, 2, 3, or 4, characterized in that, The track is positioned directly above the flange of the cast beam to avoid interference with the vertical prestressing tendons within the web of the cast beam.

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