A walking structure and bridge builder for bridge cantilever pouring construction

Abstract

The application discloses a walking structure and a bridge building machine for bridge cantilever pouring construction, and relates to the field of bridge construction. The walking structure comprises a main beam, a walking beam, a locking mechanism, a jacking mechanism and a pushing mechanism. The main beam is provided with guide rails. The walking beam is connected with the main beam through a hanger wheel assembly. The jacking mechanism is arranged on the main beam and drives the main beam and the walking beam to lift. The locking mechanism has an unlocking state and a locking state. The locking state is that the locking mechanism is fixedly connected with the guide rails. The unlocking state is that the locking mechanism can move relative to the guide rails. One end of the pushing mechanism is connected with the walking beam. The other end of the pushing mechanism is connected with the locking mechanism. The pushing mechanism drives the main beam and the walking beam to move respectively. The main beam and the load in front of the main beam can be pushed to move on the finished bridge section through the cooperation of the guide rails, the pushing mechanism and the locking mechanism. Manual disassembly and carrying are not needed. The walking method is more simple and convenient. The walking time is shorter. Full-automatic operation can be realized. The construction efficiency of the bridge is improved. The construction cost is reduced.

Description

Technical Field

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

[0002] Bridge cantilever construction typically employs a formwork system, where the entire load of the cast section is applied to the rhomboid frame, which then transfers the load to the already cast beam segments. After a new beam segment is cast, the subsequent tracks and traveling attachments are removed. Tracks are then laid on the newly completed segment and anchored to the beam. Traveling attachments are installed at the front of the tracks, with one end of a precision-rolled threaded steel bar fixed to the attachment and the other end passing through a sliding bearing and a hydraulic mandrel jack, and fixed to the tail of the jack. The front of the hydraulic mandrel jack is in close contact with the sliding bearing. When the hydraulic mandrel jack pushes, the threaded steel bar pulls the rhomboid frame forward, and this process is repeated to move the formwork forward. Because the tracks need to be manually moved forward, re-assembled and anchored, and then the rhomboid frame slowly moved forward, the process is time-consuming, slow, and labor-intensive.

[0003] Therefore, how to improve the construction efficiency of bridges has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a traveling structure for cantilever construction of bridges to improve the construction efficiency of bridges.

[0005] Another objective of this application is to provide a bridge-building machine having the aforementioned traveling structure for cantilever bridge construction.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A traveling structure for cantilever construction of bridges includes a main beam for supporting the formwork, a traveling beam, a locking mechanism, a lifting mechanism, and a pushing mechanism.

[0008] The main beam is provided with a guide rail, the traveling beam is connected to the main beam through a roller assembly, and the traveling beam can move along the guide rail;

[0009] The lifting mechanism is mounted on the main beam and is used to drive the main beam and the traveling beam to rise and fall.

[0010] The locking mechanism has an unlocked state and a locked state. In the locked state, the locking mechanism is fixedly connected to the guide rail. In the unlocked state, the locking mechanism and the guide rail can move relative to each other. One end of the pushing mechanism is connected to the traveling beam, and the other end of the pushing mechanism is connected to the locking mechanism. The pushing mechanism is used to drive the main beam and the traveling beam to move respectively.

[0011] Optionally, in the above-mentioned traveling structure for bridge cantilever casting construction, the locking mechanism includes a locking drive member, the locking drive member having a notch into which the guide rail can be inserted, and a movable piston rod is provided inside the locking drive member, the piston rod being used to press against the guide rail.

[0012] Optionally, in the above-mentioned traveling structure for cantilever bridge construction, the traveling beam is provided with a moving device for supporting the movement of the main beam.

[0013] Optionally, in the above-mentioned traveling structure for cantilever bridge construction, the moving device includes a mounting shell and a plurality of rollers. The mounting shell has a slot for accommodating the rollers, and each roller is rotatably located within the slot. The main beam is provided with a guide plate that cooperates with the rollers.

[0014] Optionally, in the above-mentioned traveling structure for bridge cantilever casting construction, the pushing mechanism includes a telescopic rod and a pushing drive connected to the telescopic rod, one of the telescopic rod and the pushing drive being connected to the traveling beam, and the other being connected to the locking mechanism.

[0015] Optionally, in the above-mentioned traveling structure for cantilever bridge construction, at least two lifting mechanisms are provided along the moving direction of the main beam, and the two lifting mechanisms are respectively located on both sides of the central axis of the main beam perpendicular to the moving direction.

[0016] Optionally, in the above-mentioned traveling structure for cantilever bridge construction, the lifting mechanism includes a lifting rod and a lifting drive connected to the lifting rod. The lifting drive is connected to the main beam through a leg beam, and the lifting rod is used to support the bridge's support surface.

[0017] Optionally, in the above-mentioned traveling structure for cantilever bridge construction, the hanging wheel assembly includes a counter-pressure wheel and a traveling wheel. The counter-pressure wheel and the traveling wheel are respectively located on both sides of the central axis of the traveling beam perpendicular to the direction of movement, and the counter-pressure wheel and the traveling wheel are respectively hooked onto the main beam.

[0018] Optionally, in the above-mentioned traveling structure for cantilever bridge construction, a support is provided at the front end of the traveling beam, and a gasket is provided between the support and the main beam.

[0019] A bridge-building machine includes a hanging basket and a traveling structure as described in any of the preceding claims for cantilever bridge construction.

[0020] The traveling structure for cantilever bridge construction provided in this application bears the load of the bridge pouring section through the main beam and ultimately transfers the load to the completed bridge section. During movement, a lifting mechanism mounted on the main beam first lifts the traveling beam, detaching it from the bridge's support surface. Then, a locking mechanism and a pushing mechanism work together to move the traveling beam forward to the target position. The lifting mechanism then places the traveling beam back onto the bridge's support surface, while the locking mechanism remains locked, fixedly connected to the guide rails on the main beam. The pushing mechanism can then move the main beam forward to the target position by pushing the locking mechanism. As can be seen from the above example, the traveling structure for cantilever bridge construction provided in this application, through the cooperation of the guide rails, pushing mechanism, and locking mechanism, can move the main beam and the formwork load at the front of the main beam on the completed bridge section without manual disassembly and handling. The traveling method is simpler, the traveling time is shorter, and fully automated operation is possible, improving bridge construction efficiency and reducing construction costs.

[0021] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 A front view of the traveling structure provided in an embodiment of this application;

[0024] Figure 2 A side view of the traveling structure provided in an embodiment of this application;

[0025] Figure 3 This is a partially exploded view of the traveling structure provided in an embodiment of this application;

[0026] Figure 4 A front view of the traveling beam provided in an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the first state of the traveling structure provided in an embodiment of this application;

[0028] Figure 6 This is a schematic diagram of the second state of the traveling structure provided in the embodiments of this application;

[0029] Figure 7 This is a schematic diagram of the third state of the traveling structure provided in the embodiments of this application;

[0030] Figure 8 This is a schematic diagram of the fourth state of the traveling structure provided in the embodiments of this application;

[0031] Figure 9 This is a schematic diagram of the fifth state of the walking structure provided in the embodiments of this application.

[0032] Among them, 10 is the main beam, 11 is the guide rail, 12 is the guide plate, 20 is the traveling beam, 21 is the moving device, 211 is the mounting shell, 212 is the roller, 22 is the support, 23 is the anchor, 30 is the locking mechanism, 31 is the locking drive component, 311 is the notch, 312 is the piston rod, 40 is the lifting mechanism, 41 is the lifting rod, 42 is the lifting drive component, 43 is the support leg beam, 50 is the pushing mechanism, 51 is the telescopic rod, 52 is the pushing drive component, 60 is the hanging wheel assembly, 61 is the counter-pressure wheel, 611 is the counter-pressure wheel box, 62 is the traveling wheel, and 70 is the support surface. Detailed Implementation

[0033] The core of this application is to provide a running structure for cantilever bridge construction to improve bridge construction efficiency.

[0034] Another core aspect of this application is to provide a bridge-building machine having the aforementioned traveling structure for cantilever bridge construction.

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] Bridge cantilever construction typically employs hanging basket construction, which ensures that the load of the cast section is entirely applied to the diamond-shaped frame, and the load is then transferred to the already cast beam segment through the diamond-shaped frame.

[0037] After the new beam segment is poured, the subsequent rails and traveling accessories are removed. The rails are laid on the newly completed segment and anchored to the beam. The traveling accessories are installed at the front end of the rails, with one end of the precision-rolled threaded steel bar fixed to the traveling accessories and the other end passing through the sliding support and the hydraulic through-hole jack and fixed to the tail of the through-hole jack. The front of the hydraulic through-hole jack is in close contact with the sliding support. When the hydraulic through-hole jack pushes, the precision-rolled threaded steel bar drags the diamond frame forward in the opposite direction. The forward movement of the hanging basket is completed through multiple drags.

[0038] During the construction process using hanging baskets, the tracks need to be moved forward manually, reassembled and anchored, and then the diamond frame needs to be pushed forward slowly. This process takes a long time, is slow, and has high labor costs.

[0039] Therefore, such as Figure 1 As shown in the embodiment of this application, a traveling structure for cantilever bridge construction is disclosed, including a main beam 10, a traveling beam 20, a locking mechanism 30, a lifting mechanism 40, and a pushing mechanism 50. Through the cooperation of the guide rail 11 on the main beam 10, the pushing mechanism 50, and the locking mechanism 30, the main beam 10 and the formwork load at the front of the main beam 10 can be moved on the completed bridge section without manual disassembly and handling. The traveling method is simpler, the traveling time is shorter, and fully automatic operation can be achieved, improving bridge construction efficiency and reducing construction costs.

[0040] The following will combine Figures 1 to 9 The traveling structure for cantilever bridge construction disclosed in the embodiments of this application will be explained and described in detail.

[0041] like Figure 1 As shown, the main beam 10 can bear the load of the preceding bridge section and transfer the load to the already poured bridge section. The traveling beam 20 is connected to the main beam 10 via a roller assembly 60. A guide rail 11 can be installed on the main beam 10, allowing the traveling beam 20 to move along the guide rail 11. A lifting mechanism 40 is installed on the main beam 10, enabling the main beam 10 and traveling beam 20 to be raised and lowered, facilitating their movement. The locking mechanism 30 has an unlocked state and a locked state. In the locked state, the locking mechanism 30 is fixedly connected to the guide rail 11. In the unlocked state, the locking mechanism 30 and the guide rail 11 can move relative to each other. One end of the pushing mechanism 50 is connected to the traveling beam 20, and the other end is connected to the locking mechanism 30, allowing the pushing mechanism 50 to drive the main beam 10 and traveling beam 20 to move respectively.

[0042] When walking, as Figure 6As shown, the lifting mechanism 40, mounted on the main beam 10, first lifts the traveling beam 20, causing it to detach from the bridge's support surface 70, and the locking mechanism 30 is in the unlocked state. At this time, the pushing mechanism 50 pushes the locking mechanism 30 to move along the guide rail 11. Then, the locking mechanism 30 switches to the locked state, while the pushing mechanism 50 returns to its initial state, thereby moving the traveling beam 20 forward. This process is repeated until the traveling beam 20 reaches the target position. Figure 7 As shown; Figure 8 As shown, when the traveling beam 20 moves to the target position, the lifting mechanism 40 retracts, causing the traveling beam 20 to descend onto the bridge's support surface 70, and the locking mechanism 30 is in the locked state. At this time, the pushing mechanism 50 pushes the locking mechanism 30 to move, and simultaneously the locking mechanism 30 can drive the main beam 10 on the guide rail 11 to move. Then, the locking mechanism 30 switches to the unlocked state, and the pushing mechanism 50 returns to its initial state, repeating the above steps until the main beam 10 moves to the target position. Figure 9 As shown.

[0043] In some embodiments, such as Figure 3 As shown, the guide rail 11 can be made of I-beam steel, and the upper flange of the guide rail 11 can be welded to the bottom of the main beam 10 at the central axis position along the moving direction, and extend along the moving direction of the main beam 10, as shown. Figure 1 As shown. The locking mechanism 30 may include a locking drive member 31. The locking drive member 31 has a notch 311 into which the lower flange of the guide rail 11 can be inserted, and a movable piston rod 312 is provided within the locking drive member 31. The piston rod 312 presses against the lower flange of the guide rail 11 to achieve the locking function of the locking mechanism 30.

[0044] In some embodiments, such as Figure 3 As shown, the notch 311 can be T-shaped to prevent the guide rail 11 from coming out of the notch 311. When installing the guide rail 11 and the locking mechanism 30, the lower flange of the guide rail 11 can be slid into the notch 311 from one side, thereby achieving the connection and fixation between the guide rail 11 and the locking mechanism 30.

[0045] It should be noted that in the above embodiments, the locking drive component 31 can be driven by a pneumatic cylinder or a hydraulic cylinder. Of course, the locking mechanism 30 can also be a mechanical locking device to achieve the locking effect.

[0046] In some embodiments, such as Figure 1 and Figure 4 As shown, a moving device 21 capable of supporting the movement of the main beam 10 can be installed on the traveling beam 20. This moving device 21 supports the main beam 10 and also assists in its movement. For example, Figure 4As shown, the moving device 21 may include a mounting housing 211 and a plurality of rollers 212. The mounting housing 211 has slots for accommodating the rollers 212, and each roller 212 is rotatably located within the slots. Figure 2 and Figure 3 As shown, the main beam 10 may be provided with a guide plate 12 that cooperates with the roller 212, so that the guide plate 12 can abut against the roller 212 to facilitate the support and movement of the main beam 10.

[0047] In some embodiments, such as Figure 4 As shown, the rollers 212 can be arranged in parallel, and the ends of two adjacent rollers 212 can be connected by connectors to form a roller chain. A support plate can be installed in the slot of the mounting housing 211 so that the roller chain can be wound onto the support plate, thereby achieving the installation and fixation of the roller chain. When it is necessary to move the main beam 10, as... Figure 1 As shown, the guide plate 12 on the main beam 10 can be inserted into the slot and abut against the roller 212 of the roller chain, thereby assisting the main beam 10 to move through the roller 212, reducing the friction between the main beam 10 and the traveling beam 20, and ensuring the stability of the movement of the main beam 10.

[0048] In some embodiments, such as Figure 2 and Figure 3 As shown, two guide plates 12 can be used, and the two guide plates 12 can be respectively set on both sides of the bottom of the main beam 10 along the moving direction. At the same time, each guide plate 12 can cooperate with at least two moving devices 21, that is, at least four moving devices 21 can be symmetrically arranged on the traveling beam 20, and the two moving devices 21 on each side of the traveling beam 20 are respectively located on both sides of the central axis of the traveling beam 20 perpendicular to the moving direction, so as to reduce the risk of the main beam 10 overturning and ensure the stability of the main beam 10 movement.

[0049] It should be noted that in the above embodiments, the moving device 21 may also adopt other devices to reduce resistance, such as roller boxes, raceways, etc., so as to achieve smooth movement of the main beam 10.

[0050] In some embodiments, such as Figure 1 As shown, the pushing mechanism 50 may include a telescopic rod 51 and a pushing drive component 52 connected to the telescopic rod 51. One of the telescopic rod 51 and the pushing drive component 52 may be connected to the traveling beam 20, and the other may be connected to the locking mechanism 30. Specifically, one end of the telescopic rod 51 may be connected to the traveling beam 20, and one end of the pushing drive component 52 may be connected to the locking mechanism 30; or one end of the telescopic rod 51 may be connected to the locking mechanism 30, and one end of the pushing drive component 52 may be connected to the traveling beam 20. Thus, the extension and retraction of the telescopic rod 51 drives the movement of the traveling beam 20 and the main beam 10.

[0051] It should be noted that the pushing drive component 52 can be a cylinder or a hydraulic cylinder. Of course, the pushing mechanism 50 can also be a screw mechanism or a worm gear mechanism to drive the movement of the traveling beam 20 and the main beam 10.

[0052] In some embodiments, the pushing mechanism 50 may be connected to the middle position of the traveling beam 20, thereby pushing the main beam 10 to move by extending the telescopic rod 51. Of course, the pushing mechanism 50 may also be connected to the tail end or the front end of the traveling beam 20, moving the main beam 10 by pushing or pulling.

[0053] In some embodiments, such as Figure 1 As shown, at least two lifting mechanisms 40 can be provided along the moving direction of the main beam 10, and the two lifting mechanisms 40 are respectively located on both sides of the central axis of the main beam 10 perpendicular to the moving direction, so as to ensure the stability of the lifting and lowering of the main beam 10 and reduce the risk of the main beam 10 overturning. The lifting mechanism 40 may include a lifting rod 41 and a lifting drive component 42 connected to the lifting rod 41. The lifting drive component 42 can be connected to the main beam 10 through the support beam 43. At the same time, the lifting rod 41 is supported on the support surface 70 of the bridge to lift the main beam 10, thereby driving the traveling beam 20 to move away from the support surface 70 of the bridge.

[0054] It should be noted that the lifting drive component 42 can be a hydraulic cylinder or a pneumatic cylinder, and the lifting mechanism 40 can also be other lifting mechanisms that can drive the main beam 10 to rise and fall.

[0055] In some embodiments, two lifting mechanisms 40 are respectively provided on both sides of the main beam 10. At the same time, connecting beams can be respectively provided on both sides of the central axis of the main beam 10 perpendicular to the direction of movement, so that the lifting mechanisms 40 on both sides of the main beam 10 can be connected to the two ends of the connecting beam through the support leg beam 43, so as to realize the installation and fixation between the four lifting mechanisms 40 and the main beam 10.

[0056] In some embodiments, such as Figure 1 and Figure 2 As shown, the roller assembly 60 may include a counter-pressure roller 61 and a traveling roller 62, with the counter-pressure roller 61 and the traveling roller 62 located on both sides of the central axis of the traveling beam 20 perpendicular to the direction of movement. The counter-pressure roller 61 and the traveling roller 62 can be respectively hooked onto the main beam 10, so as to realize the connection and fixation between the traveling beam 20 and the main beam 10, while reducing the friction force of the traveling beam 20 movement and ensuring the reliability of the traveling beam 20 movement.

[0057] In some embodiments, such as Figure 1 and Figure 2As shown, two counter-pressure rollers 61 can be used, with each roller located on one side of the traveling beam 20, and both rollers fixed to the traveling beam 20 via counter-pressure roller boxes 611. Two traveling wheels 62 can also be used, with each wheel located on one side of the traveling beam 20, and both wheels fixed to the traveling beam 20 via mounting brackets. The counter-pressure rollers 61 can be located behind the traveling wheels 62, i.e., on the side of the traveling beam 20 away from the direction of movement, thereby reducing the risk of the main beam 10 overturning. Simultaneously, cantilever plates can extend from the bottom sides of the main beam 10 towards the central axis opposite to the direction of movement, forming cantilever plates for attaching the counter-pressure rollers 61 and the traveling wheels 62. When the lifting mechanism 40 lifts the main beam 10, it can abut against the counter-pressure wheel 61 and the traveling wheel 62 through the cantilever plate at the bottom of the main beam 10, thereby realizing the connection between the main beam 10 and the traveling beam 20.

[0058] In some embodiments, such as Figure 1 and Figure 4 As shown, the front end of the traveling beam 20 can be provided with a support 22 to support the main beam 10, and a shim is provided between the support 22 and the main beam 10 to buffer and dampen the main beam 10. At the same time, an anchor beam can be provided at the rear end of the traveling beam 20, so that after the travel is completed, the anchor beam of the traveling beam 20 can be connected and fixed to the supporting surface 70 of the bridge through the anchor 23 to offset the load weight of the front end of the traveling beam 20.

[0059] When walking, as Figure 5 As shown, firstly, the lifting mechanism 40 at the front end of the main beam 10 extends, lifting the main beam 10 by approximately 5mm. Then, the shims on the support 22 are removed, and the anchorage 23 of the traveling beam 20 is removed; then, as... Figure 6 As shown, the lifting mechanisms 40 at the front and rear ends of the main beam 10 extend simultaneously, causing the main beam 10 to lift the traveling beam 20, thereby detaching the traveling beam 20 from the bridge's support surface 70. At this time, as... Figure 7 As shown, the locking mechanism 30 releases its lock from the guide rail 11, and simultaneously the pushing mechanism 50 pushes the locking mechanism 30 to move along the guide rail 11. Then, the locking mechanism 30 switches to the locked state, and the pushing mechanism 50 returns to its initial state, thereby driving the traveling beam 20 to move forward. The above steps are repeated until the traveling beam 20 moves to the target position. Figure 8As shown, when the traveling beam 20 moves to the target position, the lifting mechanism 40 retracts, causing the traveling beam 20 to descend onto the bridge's support surface 70, and the main beam 10 falls onto the moving device 21 of the traveling beam 20. At this time, the locking mechanism 30 locks with the guide rail 11, and the pushing mechanism 50 can push the locking mechanism 30 to move. Simultaneously, the locking mechanism 30 can drive the main beam 10 on the guide rail 11 to move. Then, the locking mechanism 30 releases its lock from the guide rail 11, and the pushing mechanism 50 returns to its initial state. The above steps are repeated until the main beam 10 moves to the target position. Figure 9 As shown.

[0060] The traveling structure disclosed in this application for cantilever bridge construction bears the load of the bridge pouring section through the main beam 10 and ultimately transfers the load to the completed bridge section. During travel, the traveling beam 20 is first lifted by a lifting mechanism 40 mounted on the main beam 10, causing it to detach from the bridge's support surface 70. Then, the traveling beam 20 moves forward to the target position through the cooperation of a locking mechanism 30 and a pushing mechanism 50. The lifting mechanism 40 then places the traveling beam 20 back onto the bridge's support surface 70, while the locking mechanism 30 remains locked, i.e., fixedly connected to the guide rail 11 on the main beam 10. The pushing mechanism 50 can move the main beam 10 forward to the target position by pushing the locking mechanism 30.

[0061] The traveling structure disclosed in this application for cantilever bridge construction, through the cooperation of guide rail 11, pushing mechanism 50 and locking mechanism 30, can move the main beam 10 and the formwork load at the front of the main beam 10 on the completed bridge section without manual disassembly and handling. The traveling method is simpler, the traveling time is shorter, and fully automatic operation can be achieved, which improves the construction efficiency of the bridge and reduces the construction cost.

[0062] This application also discloses a bridge-building machine, including the traveling structure for cantilever bridge construction disclosed in the above embodiments. Therefore, the bridge-building machine has all the technical effects of the aforementioned traveling structure for cantilever bridge construction, which will not be repeated here.

[0063] The terms "first" and "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units may include steps or units not listed, but rather not listed.

[0064] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A traveling structure for cantilever bridge construction, characterized in that, It includes a main beam (10), a traveling beam (20), a locking mechanism (30), a lifting mechanism (40), and a pushing mechanism (50); The main beam (10) is used to bear the load of the bridge pouring section. The main beam (10) is provided with a guide rail (11). The traveling beam (20) is connected to the main beam (10) through a hanging wheel assembly (60), and the traveling beam (20) can move along the guide rail (11). The lifting mechanism (40) is mounted on the main beam (10) and is used to drive the main beam (10) and the traveling beam (20) to rise and fall. The locking mechanism (30) has an unlocked state and a locked state. In the locked state, the locking mechanism (30) is fixedly connected to the guide rail (11). In the unlocked state, the locking mechanism (30) and the guide rail (11) can move relative to each other. One end of the pushing mechanism (50) is connected to the traveling beam (20), and the other end of the pushing mechanism (50) is connected to the locking mechanism (30). The pushing mechanism (50) is used to drive the main beam (10) and the traveling beam (20) to move respectively.

2. The traveling structure for cantilever bridge construction according to claim 1, characterized in that, The locking mechanism (30) includes a locking drive (31) having a notch (311) into which the guide rail (11) can be inserted, and a movable piston rod (312) is provided inside the locking drive (31) for pressing against the guide rail (11).

3. The traveling structure for cantilever bridge construction according to claim 1, characterized in that, The traveling beam (20) is provided with a moving device (21) for supporting the movement of the main beam (10).

4. The traveling structure for cantilever bridge construction according to claim 3, characterized in that, The moving device (21) includes a mounting shell (211) and a plurality of rollers (212). The mounting shell (211) has a slot for accommodating the rollers (212), and each roller (212) is rotatably located in the slot. The main beam (10) is provided with a guide plate (12) that cooperates with the rollers (212).

5. The traveling structure for cantilever bridge construction according to claim 1, characterized in that, The pushing mechanism (50) includes a telescopic rod (51) and a pushing drive (52) connected to the telescopic rod (51). One of the telescopic rod (51) and the pushing drive (52) is connected to the traveling beam (20), and the other is connected to the locking mechanism (30).

6. The traveling structure for cantilever bridge construction according to claim 1, characterized in that, At least two lifting mechanisms (40) are provided along the moving direction of the main beam (10), and the two lifting mechanisms (40) are respectively located on both sides of the central axis of the main beam (10) perpendicular to the moving direction.

7. The traveling structure for cantilever bridge construction according to claim 6, characterized in that, The lifting mechanism (40) includes a lifting rod (41) and a lifting drive (42) connected to the lifting rod (41). The lifting drive (42) is connected to the main beam (10) via a leg beam (43). The lifting rod (41) is used to support the bridge on the support surface (70).

8. The traveling structure for cantilever bridge construction according to claim 1, characterized in that, The roller assembly (60) includes a counter-pressure roller (61) and a traveling roller (62). The counter-pressure roller (61) and the traveling roller (62) are located on both sides of the traveling beam (20) along the central axis perpendicular to the direction of movement. The counter-pressure roller (61) and the traveling roller (62) are used to be attached to the main beam (10) respectively.

9. The traveling structure for cantilever bridge construction according to any one of claims 1 to 8, characterized in that, The front end of the traveling beam (20) is provided with a support (22), and a gasket is provided between the support (22) and the main beam (10).

10. A bridge-building machine, characterized in that, Includes the traveling structure for cantilever construction of bridges as described in any one of claims 1 to 9.

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