Bridge girder erection machine moving method suitable for capping-beam-free steel-concrete composite structure bridge
By employing mechanical locking with protrusions and grooves on the piers of bridges without cap beams, and cooperating with electric screws, the bridge erecting machine can move stably. This solves the problem of the difficulty in moving traditional bridge erecting machines on steel-concrete composite bridges without cap beams, reduces construction costs and time, and improves stability and adaptability.
Patent Information
- Application Number
- CN202511945775.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-22
- Publication Date
- 2026-02-10
AI Technical Summary
Traditional bridge erecting machines are ill-suited to the movement and load-bearing capacity of steel-concrete composite bridges without girder covers, and suffer from problems such as high cost of temporary supports, insufficient movement stability, poor adaptability, and limited space occupied by outriggers.
The bridge erecting machine adopts a precise alignment and fixing mechanism with No. 1 and No. 0 outriggers. Through the mechanical locking of the protrusions and grooves and the cooperation of the electric screw, it can achieve stable movement on the piers without cap beams and avoid spatial conflicts between the outriggers.
It reduces construction costs and time, improves mobility and construction efficiency, avoids the need for temporary supports, and is adaptable to beamless structures with different spans and pier heights.
Smart Images
Figure CN121496852A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of bridge erecting machine technology, and in particular to a method for moving a bridge erecting machine adapted to a steel-concrete composite bridge without a cap beam. Background Technology
[0002] As transportation infrastructure construction extends into mountainous areas, the scale and complexity of bridge construction are gradually increasing. The complex terrain, fragile ecosystems, harsh working conditions, and rising labor costs of mountainous regions pose significant challenges to traditional bridge construction methods. Traditional bridge construction typically requires the construction of temporary sites, which not only increases construction costs but may also cause irreversible damage to the ecological environment. Furthermore, the lack of sufficient flat land in mountainous areas further limits the application of traditional construction methods. Therefore, precast steel-concrete composite beam bridges have emerged. Through factory prefabrication and on-site assembly, they significantly reduce the complexity of on-site construction, lower the risk of ecological damage, and adapt to the construction needs of complex mountainous terrain.
[0003] Steel-concrete composite bridges have become an important development direction in modern bridge engineering due to their advantages such as high load-bearing capacity, short construction period, and excellent seismic performance. In particular, steel-concrete composite bridges without cap beams (i.e., eliminating the traditional cap beam, with steel beams directly resting on capless steel-concrete composite piers) further simplify bridge construction, reduce material consumption and construction complexity, and are especially suitable for scenarios with complex mountainous terrain and limited construction space. However, the construction of such bridges places special requirements on the movement and load-bearing methods of bridge erecting machines, which are difficult to directly adapt using traditional bridge erecting machine technology.
[0004] In conventional precast beam bridge construction, bridge erecting machines typically rely on cap beams as temporary support points and moving tracks. However, in steel-concrete composite bridges without cap beams, the traditional bridge erecting machine's traveling mechanism, support system, and counterweight methods are unsuitable due to the lack of this crucial load-bearing structure. Existing technologies have attempted to address this issue by adding temporary supports or modifying the bridge erecting machine structure, but these methods generally suffer from the following limitations: High cost of temporary supports: The erection of a large number of temporary piers or supports significantly increases construction costs and time. Insufficient stability during movement: When the bridge erecting machine moves on the piers of a bridge without a cap beam, it is prone to overturning due to the lack of effective support points; Poor adaptability: Existing bridge erecting machines are difficult to adapt to the requirements of open beam structures with different spans, cross-sectional shapes and pier heights; Limited space occupied by bridge erecting machine outriggers: In order to achieve the final continuous structure of the steel-concrete composite beam segment, the steel-concrete composite beam segment needs to be suspended beyond the pier by a certain length and the steel-concrete composite beam segment is an ultra-wide section. The outriggers of the bridge erecting machine need to be widened to allow the steel-concrete composite beam segment to pass through. However, the space of the steel-concrete composite bridge pier without a cap beam is small, and the bridge erecting machine outriggers cannot occupy space after being widened. Summary of the Invention
[0005] The purpose of this invention is to overcome the shortcomings of traditional bridge erecting machine movement methods that are not suitable for the construction of steel-concrete composite bridges without cap beams, and to provide a bridge erecting machine movement method that is suitable for steel-concrete composite bridges without cap beams.
[0006] In a first aspect, the present invention provides a method for moving a bridge erecting machine adapted to a steel-concrete composite bridge without a cap beam, comprising the following steps: S1: The No. 1 outrigger station is located at the Nth open beam steel-concrete composite pier, lifting the No. 2 outrigger and the No. 0 outrigger; S2: After the No. 2 outrigger moves forward to its position, it lowers so that the No. 2 outrigger is positioned on the steel-concrete structure beam segment; S3: The main boom moves forward and drives the zero outrigger to move forward. When the front edge of the zero outrigger is aligned with the front edge of the N+1th open beam steel-concrete composite pier, the zero outrigger is lowered so that the zero outrigger stands on the top of the N+1th open beam steel-concrete composite pier. S4: Lift outrigger No. 2, move outrigger No. 2 forward to position and then lower it so that outrigger No. 2 stands on the steel-concrete structure beam segment; S5: Lift the No. 1 outrigger, so that the No. 1 outrigger is moved from the No. N uncovered beam steel-concrete composite pier to the No. N+1 uncovered beam steel-concrete composite pier, and the No. 1 outrigger is located at the No. N+1 uncovered beam steel-concrete composite pier. S6: The main boom moves forward, driving the zero outrigger forward, and the bridge erecting machine's movement across the hole ends.
[0007] The present invention provides a method for moving a bridge erecting machine adapted to a steel-concrete composite bridge without a cap beam. When the leading edge of the zero outrigger aligns with the leading edge of the (N+1)th pier of the steel-concrete composite bridge without a cap beam, the zero outrigger is lowered, bringing it as close as possible to the edge of the (N+1)th pier. This reserves space for the subsequent first outrigger, avoiding spatial conflicts between outriggers and enabling the bridge erecting machine to move across the span without relying on a cap beam. The first outrigger can directly stand on the pier of the steel-concrete composite bridge without a cap beam, avoiding the erection of a large number of temporary piers or supports, saving material and labor costs, and shortening the construction period.
[0008] Preferably, a protrusion and a screw rod are installed on the lower part of the No. 1 support leg, and a lateral seat is installed on the upper part of the open-beam steel-concrete composite pier. The lateral seat has a groove that couples with the protrusion, and the screw rod can approach or move away from the side wall of the open-beam steel-concrete composite pier. S5 includes the following steps: Retract the lead screw, lift the No. 1 outrigger, and move the protrusion out of the groove. The No. 1 outrigger moves forward from the Nth open-beam steel-concrete composite pier to the N+1th open-beam steel-concrete composite pier. The No. 1 outrigger falls down, causing the protrusion to fall into the groove. The lead screw extends and abuts against the side wall of the N+1th open-beam steel-concrete composite pier. The No. 1 outrigger is positioned on the N+1th open-beam steel-concrete composite pier.
[0009] The protrusion at the lower part of the No. 1 outrigger precisely matches the groove in the lateral seat on the upper part of the beamless steel-concrete composite pier, forming a mechanical lock that effectively prevents the outrigger from sliding or shifting horizontally. The coupling design of the protrusion and groove provides a clear positioning reference point for the outrigger's descent, allowing it to land quickly and accurately at the target position. The extended lead screw abuts against the side wall of the beamless steel-concrete composite pier, further enhancing the horizontal stability of the No. 1 outrigger. This dual fixing mechanism significantly improves the stability of the No. 1 outrigger on the beamless steel-concrete composite pier, reducing the risk of the bridge erecting machine overturning during operation. By installing a lateral seat on the upper part of the beamless steel-concrete composite pier, the insufficient number of temporary beamless steel-concrete composite piers or supports for the bridge erecting machine is avoided, improving construction efficiency and reducing construction costs.
[0010] Preferably, the lead screw is an electric lead screw.
[0011] The preferred lead screw is an electric lead screw, which replaces manual rotation with electric control. The operator can make adjustments simply by pressing a button or using a remote control, which significantly reduces the complexity and time of operation. In addition, electric lead screws can be integrated into automation systems and support remote operation, making them especially suitable for high-altitude or hazardous areas.
[0012] Preferably, the protrusion is a wedge-shaped block.
[0013] The preferred protrusion is a wedge-shaped block. When the outrigger descends, the inclined surface of the wedge-shaped block contacts the groove and slides naturally along the inclined surface, thereby guiding the protrusion to gradually align with the correct position of the groove. By utilizing the guiding effect of gravity and the inclined surface, the first outrigger can fall into the predetermined position more effectively, reducing the difficulty of aligning the first outrigger.
[0014] Preferably, there are two lateral seats, which are symmetrically installed on the outside of the beamless steel-concrete composite pier.
[0015] The two lateral seats provide stable load-bearing support points for the two No. 1 outriggers of the bridge erecting machine. The symmetrical layout ensures that the outriggers are subjected to balanced forces when connected to the steel-concrete composite pier without a cover beam, reducing the risk of overturning caused by uneven forces on one side and improving the stability of the bridge erecting machine when it moves.
[0016] Preferably, a camera and a rangefinder are installed on the leading edge of the zero leg. The rangefinder is used to measure the distance between the bottom of the zero leg and the top of the pier of the steel-concrete composite bridge without a cover beam. In S1, the lifting height of outrigger number zero is H; S3 includes the following steps: the main boom moves forward and drives the zero outrigger forward. When the rangefinder first measures the distance H, the forward movement speed of the main boom is slowed down. The position of the zero outrigger is observed in real time through the camera. When the rangefinder loses signal, the main boom stops moving. The front edge of the zero outrigger is aligned with the front edge of the N+1th open-beam steel-concrete composite pier. The zero outrigger is lowered by a height H so that the zero outrigger stands on the top of the N+1th open-beam steel-concrete composite pier.
[0017] When the zero outrigger has not reached the N+1th open-beam steel-concrete composite pier, the rangefinder cannot measure the distance. When the zero outrigger enters the vertical projection range of the open-beam steel-concrete composite pier, the rangefinder measures the lifting height H of the zero outrigger for the first time, indicating that the zero outrigger is close to the target position. At this time, the forward movement speed of the main boom is slowed down for fine adjustment to ensure the precise alignment of the zero outrigger. When the rangefinder loses its signal, it indicates that the rangefinder has exceeded the range of the N+1th open-beam steel-concrete composite pier. At this time, the leading edge of the zero outrigger is aligned with the leading edge of the N+1th open-beam steel-concrete composite pier, and the main boom stops moving to ensure that the leading edge of the zero outrigger is precisely aligned with the leading edge of the open-beam steel-concrete composite pier. This maximizes the space reserved for the subsequent first outrigger, avoids spatial conflicts between outriggers, and better adapts to the movement and positioning of the bridge erecting machine on the open-beam steel-concrete composite pier.
[0018] The camera provides intuitive visual feedback, allowing construction workers to accurately determine the alignment status of the zero outrigger with the leading edge of the N+1th open beam steel-concrete composite pier through real-time images, facilitating fine-tuning of the forward movement speed of the main boom.
[0019] Preferably, the rangefinder is a radar rangefinder.
[0020] Radar rangefinders use electromagnetic waves for non-contact distance measurement, with extremely high accuracy (typically down to the millimeter level). They can accurately detect the distance between the bottom of the zero leg and the top of the steel-concrete composite pier without a cover beam, ensuring the precise positioning of the zero leg.
[0021] Preferably, S1 includes the following steps: The No. 1 outrigger station is located at the Nth open-beam steel-concrete composite pier; Unlock the No. 2 outrigger, activate the lifting cylinder of the No. 2 outrigger to lift the No. 2 outrigger and the ground beam away from the steel-concrete structure beam segment, and lock the No. 2 outrigger. Unlock the zero outrigger, engage the lifting cylinder of the zero outrigger to lift the zero outrigger, and maintain the lifting force with the lifting cylinder of the zero outrigger.
[0022] After being lifted, the No. 2 outrigger is locked to ensure that it will not move or fall accidentally while suspended, thus enhancing stability during operation. The No. 2 and No. 0 outriggers are lifted smoothly by lifting cylinders, and the continuous lifting force provided by the cylinders can precisely control the height of the outriggers (such as maintaining the lifting force on the No. 0 outrigger). When the No. 2 outrigger is lifted, it leaves the steel-concrete structure beam segment together with the ground beam, ensuring the overall coordination between the ground beam and the outrigger.
[0023] Preferably, S2 includes the following steps: The motor drives the No. 2 outrigger to move forward. After the No. 2 outrigger moves into place, it is unlocked. The lifting cylinder of the No. 2 outrigger descends, positioning the No. 2 outrigger on the steel-concrete structure beam segment and locking the No. 2 outrigger.
[0024] The motor drives the No. 2 outrigger to move forward, enabling smooth and precise movement. After the No. 2 outrigger moves into position, it is unlocked and lowered. Once it stands on the steel-concrete structure beam segment, it is locked again to ensure that the outrigger remains stable during construction and to prevent accidental displacement caused by vibration or external force.
[0025] Preferably, S4 includes the following steps: Unlock the No. 2 outrigger, activate the lifting cylinder of the No. 2 outrigger to lift the No. 2 outrigger and the ground beam away from the steel-concrete structure beam segment, and lock the No. 2 outrigger. The motor drives the No. 2 outrigger to move forward. After the No. 2 outrigger moves into place, it is unlocked. The lifting cylinder of the No. 2 outrigger descends, positioning the No. 2 outrigger on the steel-concrete structure beam segment and locking the No. 2 outrigger.
[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides a method for moving a bridge erecting machine adapted to a steel-concrete composite bridge without a cap beam. When the leading edge of the zero outrigger aligns with the leading edge of the (N+1)th cap beam steel-concrete composite pier, the zero outrigger is lowered, bringing it as close as possible to the edge of the (N+1)th cap beam steel-concrete composite pier. This reserves space for the subsequent first outrigger, avoiding spatial conflicts between outriggers and enabling the bridge erecting machine to move across the span without relying on a cap beam. The first outrigger can directly stand on the cap beam steel-concrete composite pier, avoiding the erection of numerous temporary cap beam steel-concrete composite piers or supports, saving material and labor costs, and shortening the construction period. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the initial state of the bridge erecting machine before it moves. Figure 2 This is a schematic diagram of the state of the second outrigger in S2 after it has fallen. Figure 3 This is a schematic diagram of the main arm moving forward in S3; Figure 4This is a schematic diagram showing the position of the No. 0 outrigger station in S3 behind the N+1th pier. Figure 5 This is a schematic diagram of the state of the second outrigger in S4 after it has fallen. Figure 6 This is a schematic diagram showing the position of the No. 1 outrigger station in S5 behind the N+1th pier. Figure 7 This is a schematic diagram showing the state of the bridge erecting machine after it has moved across the arch. Figure 8 Diagram showing the positioning of outrigger number zero; Figure 9 This is a schematic diagram of the position of the No. 1 outrigger; Figure 10 for Figure 9 Enlarged diagram of section A in the middle; Figure 11 A schematic diagram showing the lifting position of the No. 1 outrigger; Figure 12 This is a schematic diagram of the positioning of the second outrigger; Figure 13 This is a schematic diagram of the movement of outrigger number zero; Figure 14 for Figure 13 Enlarged schematic diagram of section B in the middle.
[0028] Marked in the image: 1-Outrigger No. 0, 11-Camera, 12-Range sensor, 2-Outrigger No. 1, 21-Protrusion, 22-Screw rod, 3-Outrigger No. 2, 4-Main arm, 5-Ground beam, 100-Uncovered steel-concrete composite pier, 101-Side seat, 1011-Groove, 200-Steel-concrete structural beam segment. Detailed Implementation
[0029] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.
[0030] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.
[0031] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.
[0032] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.
[0033] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.
[0034] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.
[0035] Example 1 This embodiment provides a method for moving a bridge erecting machine adapted to a steel-concrete composite structure bridge without a cover beam. Using this method, the bridge erecting machine can erect a steel-concrete composite structure bridge without a cover beam.
[0036] like Figure 1 The diagram shows the initial state of the bridge erecting machine before movement. The outriggers of the machine, from front to back, are outrigger 1 (also called column 0), outrigger 2 (also called column 1), outrigger 3 (also called column 2), and outrigger 3 (also called column 3). The direction in which the bridge erecting machine is to move can be... Figure 1 From left to right, at this moment, the zero leg 1 of the bridge erecting machine is suspended in the air, as... Figure 9 , Figure 10As shown, the No. 1 outrigger 2 is located at the Nth open-beam steel-concrete composite pier 100. Specifically, a protrusion 21 and a lead screw 22 are installed on the lower part of the No. 1 outrigger 2. In this embodiment, the protrusion 21 can be a wedge-shaped block. A lateral seat 101 is installed on the upper part of the open-beam steel-concrete composite pier 100. The lateral seat 101 has a groove 1011 that couples with the protrusion 21. Specifically, there are two lateral seats 101, which are symmetrically installed on the outer side of the open-beam steel-concrete composite pier 100. The two lateral seats 101 provide stable load-bearing support points for the two No. 1 outriggers 2 of the bridge erecting machine. The symmetrical layout ensures that the force is balanced when the outriggers are connected to the open-beam steel-concrete composite pier 100, reducing the risk of overturning due to uneven force on one side and improving the stability of the bridge erecting machine during movement.
[0037] The preferred protrusion 21 is a wedge-shaped block. When the support leg descends, the inclined surface of the wedge-shaped block contacts the groove 1011 and slides naturally along the inclined surface, thereby guiding the protrusion 21 to gradually align with the correct position of the groove 1011. By utilizing the guiding effect of gravity and the inclined surface, the first support leg 2 can fall into the predetermined position better, reducing the positioning difficulty of the first support leg 2.
[0038] like Figure 10 , Figure 11 As shown, the lead screw 22 can approach or move away from the side wall of the unsupported steel-concrete composite pier 100. The lead screw 22 is used to press against the side wall of the unsupported steel-concrete composite pier 100. In this embodiment, the lead screw 22 can be an electric lead screw. Preferably, the lead screw 22 is an electric lead screw. The electric lead screw 22 replaces manual rotation with electric control. The operator can complete the adjustment simply by pressing a button or using a remote control, which significantly reduces the complexity and time of operation. In addition, the electric lead screw 22 can be integrated into an automation system to support remote operation, which is especially suitable for high-altitude or hazardous area operations.
[0039] like Figure 12 As shown, the No. 2 outrigger, station 3, is located at 200mm of the reinforced concrete beam segment. Figure 1 As shown, the distance between support leg 2 and support leg 3 is X2, the distance between support leg 1 and support leg 2 is X1, and the span between the Nth open-beam steel-concrete composite pier 100 and the N+1th open-beam steel-concrete composite pier 100 is Kj.
[0040] The bridge erecting machine movement method adapted to steel-concrete composite bridges without cap beams provided in this embodiment includes the following steps: S1: The No. 1 outrigger 2 station is located at the Nth open beam steel-concrete composite pier 100, lifting the No. 2 outrigger 3 and the No. 0 outrigger 1.
[0041] Specifically, lifting outrigger 3 can be achieved by: unlocking outrigger 3, for example, by removing the pin of outrigger 3.
[0042] The lifting cylinder of the second outrigger 3 is activated to lift the second outrigger 3 and the ground beam 5 away from the steel-concrete structure beam segment 200, and lock the second outrigger 3, for example, by the pin that installs the second outrigger 3.
[0043] Specifically, raising outrigger 1 can be achieved by: unlocking outrigger 1, engaging the lifting cylinder of outrigger 1, raising outrigger 1, and maintaining the lifting force with the lifting cylinder. Furthermore, the lifting height of outrigger 1 is H to prevent collision between outrigger 1 and the tie beam during the movement of the bridge erecting machine.
[0044] After being lifted, outrigger 3 is locked to ensure that it will not move or fall accidentally while suspended, thus enhancing stability during operation. Outrigger 3 and outrigger 1 are lifted smoothly by lifting cylinders. The continuous lifting force provided by the cylinders can precisely control the height of the outriggers (such as outrigger 1 maintaining lifting force). When outrigger 3 is lifted, it moves the ground beam 5 away from the steel-concrete structure beam segment 200 together, ensuring the overall coordination between the ground beam 5 and the outrigger.
[0045] S2: After the No. 2 outrigger 3 moves forward to its position, it falls down, so that the No. 2 outrigger 3 stands on the 200mm section of the steel-concrete structure beam.
[0046] Specifically, the motor drives the second outrigger 3 to move forward, for example... Figure 2 As shown, the forward movement distance of outrigger 3 can be ΔX. 2-1 After outrigger 3 moves forward into position, the distance between outrigger 2 and outrigger 3 becomes X2 + ΔX. 2-1 (ΔX) 2-1 (This can be a negative value). After outrigger 3 moves into position, it is unlocked, for example, by removing the pin of outrigger 3. The lifting cylinder of outrigger 3 then descends, positioning outrigger 3 at the steel-concrete structure beam segment 200. Outrigger 3 is then locked, for example, by removing the pin of outrigger 3. The motor drives outrigger 3 to move forward, enabling smooth and precise movement. After moving into position, outrigger 3 is unlocked and lowered. Once positioned at the steel-concrete structure beam segment 200, it is locked again to ensure the outrigger remains stable during construction and prevent accidental displacement due to vibration or external forces.
[0047] S3: As Figure 3 , Figure 4 As shown, the motor drives the main boom 4 of the bridge erecting machine to move forward, which in turn moves the zero support leg 1 forward. When the leading edge of the zero support leg 1 (the direction of movement of the bridge erecting machine can be defined as forward) aligns with the leading edge of the (N+1)th open-beam steel-concrete composite pier 100, the zero support leg 1 is lowered, so that the zero support leg 1 stands on the top of the (N+1)th open-beam steel-concrete composite pier 100. The forward movement distance of the zero support leg 1 can be ΔX. 1-1 After outrigger 1 is moved into position, the distance between outrigger 1 and outrigger 2 is X1 + ΔX.1-1 (ΔX) 1-1 (Can be negative).
[0048] Specifically, a camera 11 and a rangefinder 12 can be installed on the front edge of the zero leg 1. The rangefinder 12 is used to measure the distance between the bottom of the zero leg 1 and the top of the pier of the beamless steel-concrete composite bridge pier 100. In this embodiment, the rangefinder 12 is a radar rangefinder.
[0049] like Figure 13 , Figure 14 As shown, the main boom 4 moves forward, driving the zero-leg 1 forward as well. When the rangefinder 12 first measures the distance H (i.e., the lifting height of the zero-leg 1), the motor decelerates, slowing down the forward movement of the main boom 4. The position of the zero-leg 1 is observed in real time by the camera 11. When the rangefinder 12 loses its signal, the main boom 4 stops moving. At this time, the leading edge of the zero-leg 1 is aligned with the leading edge of the (N+1)th open-beam steel-concrete composite pier 100, and the zero-leg 1 descends the height H. Figure 8 As shown, the zero support leg 1 is positioned on the top of the N+1th open-beam steel-concrete composite pier 100.
[0050] When outrigger 1 has not reached the (N+1)th open-beam steel-concrete composite pier 100, the distance measuring instrument 12 cannot measure the distance. When outrigger 1 enters the vertical projection range of the open-beam steel-concrete composite pier 100, the distance measuring instrument 12 measures the lifting height H of outrigger 1 for the first time, indicating that outrigger 1 is close to the target position. At this time, the forward movement speed of the main boom 4 is slowed down for fine adjustment to ensure the precise alignment of outrigger 1. When the distance measuring instrument 12 loses its signal, it indicates that the distance measuring instrument 12 has exceeded the N-th pier. Within the area of the +1 uncovered steel-concrete composite pier 100, the leading edge of outrigger 1 is aligned with the leading edge of the (N+1)th uncovered steel-concrete composite pier 100. The main boom 4 stops moving, ensuring precise alignment between the leading edge of outrigger 1 and the leading edge of the uncovered steel-concrete composite pier 100. This maximizes space for the subsequent positioning of outrigger 2, avoiding spatial conflicts between outriggers and better accommodating the bridge erecting machine's movement and positioning on the uncovered steel-concrete composite pier 100. Camera 11 provides intuitive visual feedback, allowing construction personnel to accurately determine the alignment status of outrigger 1 and the leading edge of the (N+1)th uncovered steel-concrete composite pier 100 through real-time images, facilitating fine-tuning of the main boom 4's forward movement speed.
[0051] S4: Raise the second outrigger 3, as follows Figure 5 As shown, after the No. 2 outrigger 3 moves forward to its position, it falls down, so that the No. 2 outrigger 3 stands on the 200-meter section of the steel-concrete structure beam.
[0052] Specifically, unlocking the second outrigger 3, for example, by removing the pin of the second outrigger 3, the lifting cylinder of the second outrigger 3 will work, lifting the second outrigger 3 and the ground beam 5 away from the steel-concrete structure beam segment 200, and locking the second outrigger 3, for example, by installing the pin of the second outrigger 3. The motor drives the second outrigger 3 to move forward, and the forward movement distance of the second outrigger 3 can be ΔX. 2-2 After outrigger 3 moves into place, it is unlocked. At this point, the distance between outrigger 2 and outrigger 3 is X2 + ΔX. 2-1 +ΔX 2-2 The lifting cylinder of outrigger 3 descends, positioning outrigger 3 at the 200mm mark of the steel-concrete structure beam segment, thus locking outrigger 3.
[0053] S5: As Figure 6 As shown, the No. 1 support leg 2 is lifted, so that the No. 1 support leg 2 is moved forward from the No. N open beam steel-concrete composite pier 100 to the No. N+1 open beam steel-concrete composite pier 100, and the No. 1 support leg 2 is positioned at the No. N+1 open beam steel-concrete composite pier 100.
[0054] Specifically, when raising outrigger number 1, such as... Figure 11 As shown, firstly, the lead screw 22 retracts, and the lifting cylinder operates to lift the first support leg 2, causing the protrusion 21 to move out of the groove 1011. The motor drives the first support leg 2 to move forward from the Nth open-beam steel-concrete composite pier 100 to the N+1th open-beam steel-concrete composite pier 100. When the first support leg 2 enters the vertical projection range of the N+1th open-beam steel-concrete composite pier 100, the motor decelerates, slowing down the forward movement speed of the first support leg 2 for fine-tuning. The left and right adjustment of the first outrigger 2 can be achieved by its lateral hydraulic cylinder, the front and rear adjustment of the first outrigger 2 can be achieved by its drive motor, and the height adjustment of the first outrigger 2 can be achieved by its lifting hydraulic cylinder, thereby ensuring that the first outrigger 2 falls so that the protrusion 21 falls into the groove 1011, the pin shaft of the first outrigger 2 is locked in the height direction, and the screw rod 22 extends out and abuts against the side wall of the N+1th open beam steel-concrete composite pier 100, further tightening the open beam steel-concrete composite pier 100, as... Figure 6 As shown, support leg 2 is positioned at the (N+1)th open-beam steel-concrete composite pier 100. At this time, support leg 1 is also positioned at the front edge of the (N+1)th open-beam steel-concrete composite pier 100. The distance between support leg 2 and support leg 1 is (X1 + ΔX). 1-1 )-Kj.
[0055] The protrusion 21 at the lower part of the No. 1 outrigger 2 precisely matches the groove 1011 in the lateral seat 101 on the upper part of the beamless steel-concrete composite pier 100, forming a mechanical lock that effectively prevents the outrigger from sliding or shifting in the horizontal direction. The coupling design of the protrusion 21 and the groove 1011 provides a clear positioning reference point for the descent of the outrigger, allowing the No. 1 outrigger 2 to fall quickly and accurately into the target position. After the lead screw 22 extends, it abuts against the side wall of the beamless steel-concrete composite pier 100, further enhancing the horizontal stability of the No. 1 outrigger 2. This dual fixing mechanism significantly improves the stability of the No. 1 outrigger 2 on the beamless beamless steel-concrete composite pier 100, reducing the risk of the bridge erecting machine overturning during operation. By installing the lateral seat 101 on the upper part of the beamless steel-concrete composite pier 100, the insufficient number of temporary piers or supports for the bridge erecting machine to stand on is avoided, improving construction efficiency and reducing construction costs.
[0056] S6: As Figure 7 As shown, the motor drives the main boom 4 of the bridge erecting machine to move forward, which in turn moves the zero support leg 1 forward. The forward movement distance of the zero support leg 1 is ΔX. 1-2 At this time, the distance between outrigger 2 (number 1) and outrigger 1 (number 0) is (X1 + ΔX). 1-1 -Kj+ΔX 1-2 The bridge erecting machine's movement across the span has ended.
[0057] The bridge erecting machine movement method adapted to the steel-concrete composite structure bridge without a cap beam provided in this embodiment involves lowering the zero leg 1 when its leading edge aligns with the leading edge of the (N+1)th cap beam steel-concrete composite pier 100. This brings the zero leg 1 as close as possible to the edge of the (N+1)th cap beam steel-concrete composite pier 100, reserving space for the subsequent first leg 2 and avoiding spatial conflicts between legs. The bridge erecting machine can move across the span without relying on the cap beam. The first leg 2 can directly stand on the cap beam steel-concrete composite pier 100, avoiding the erection of numerous temporary piers or supports, saving material and labor costs, and shortening the construction period.
[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A method for moving a bridge erecting machine adapted to a steel-concrete composite bridge without a cap beam, characterized in that, Includes the following steps: S1: The No. 1 outrigger (2) is located at the Nth open beam steel-concrete composite pier (100), lifting the No. 2 outrigger (3) and the No. 0 outrigger (1); S2: After the No. 2 outrigger (3) moves forward to its position, it falls down, so that the No. 2 outrigger (3) stands on the steel-concrete structure beam segment (200). S3: The main arm (4) moves forward and drives the zero leg (1) to move forward. When the front edge of the zero leg (1) is aligned with the front edge of the N+1th open beam steel-concrete composite pier (100), the zero leg (1) is lowered so that the zero leg (1) is positioned on the top of the N+1th open beam steel-concrete composite pier (100). S4: Lift the No. 2 outrigger (3), move the No. 2 outrigger (3) forward and then lower it so that the No. 2 outrigger (3) stands on the steel-concrete structure beam segment (200). S5: Lift the No. 1 support leg (2) so that the No. 1 support leg (2) moves forward from the No. N uncovered beam steel-concrete composite pier (100) to the No. N+1 uncovered beam steel-concrete composite pier (100), and the No. 1 support leg (2) is located at the No. N+1 uncovered beam steel-concrete composite pier (100). S6: The main boom (4) moves forward and drives the zero support leg (1) to move forward, and the bridge erecting machine finishes moving through the hole.
2. The method for moving a bridge erecting machine adapted to a steel-concrete composite bridge without a cap beam, as described in claim 1, is characterized in that... A protrusion (21) and a screw rod (22) are installed on the lower part of the No. 1 support leg (2). A side seat (101) is installed on the upper part of the uncovered steel-concrete composite pier (100). The side seat (101) has a groove (1011) that couples with the protrusion (21). The screw rod (22) can approach or move away from the side wall of the uncovered steel-concrete composite pier (100). S5 includes the following steps: Retract the screw rod (22), lift the first support leg (2), so that the protrusion (21) moves out of the groove (1011), the first support leg (2) moves forward from the Nth open beam steel-concrete composite pier (100) to the N+1th open beam steel-concrete composite pier (100), the first support leg (2) falls down so that the protrusion (21) falls into the groove (1011), the screw rod (22) extends out and abuts against the side wall of the N+1th open beam steel-concrete composite pier (100), the first support leg (2) stands on the N+1th open beam steel-concrete composite pier (100).
3. The method for moving a bridge erecting machine adapted to a steel-concrete composite structure bridge without a cap beam, as described in claim 2, is characterized in that... The lead screw (22) is an electric lead screw.
4. The method for moving a bridge erecting machine adapted to a steel-concrete composite bridge without a cap beam, as described in claim 2, is characterized in that... The convex block (21) is a wedge-shaped block.
5. The method for moving a bridge erecting machine adapted to a steel-concrete composite bridge without a cap beam, as described in claim 2, is characterized in that... There are two side seats (101), which are symmetrically installed on the outside of the steel-concrete composite pier (100) without a cover beam.
6. The method for moving a bridge erecting machine adapted to a steel-concrete composite bridge without a cap beam, as described in claim 1, is characterized in that... A camera (11) and a rangefinder (12) are installed on the front edge of the zero leg (1). The rangefinder (12) is used to measure the distance between the bottom of the zero leg (1) and the top of the pier of the beamless steel-concrete composite bridge pier (100). In S1, the lifting height of the zero support leg (1) is H; S3 includes the following steps: the main boom (4) moves forward and drives the zero leg (1) to move forward. When the distance measuring instrument (12) first measures the distance H, the forward movement speed of the main boom (4) is slowed down. The position of the zero leg (1) is observed in real time through the camera (11). When the distance measuring instrument (12) loses signal, the main boom (4) stops moving. The front edge of the zero leg (1) is aligned with the front edge of the N+1th open beam steel-concrete composite pier (100). The zero leg (1) is lowered by a height H so that the zero leg (1) stands on the top of the N+1th open beam steel-concrete composite pier (100).
7. A method for moving a bridge erecting machine adapted to a steel-concrete composite bridge without a cap beam, as described in claim 6, is characterized in that... The rangefinder (12) is a radar rangefinder.
8. The method for moving a bridge erecting machine adapted to a steel-concrete composite bridge without a cap beam, as described in claim 1, is characterized in that... S1 includes the following steps: The No. 1 outrigger (2) station is located at the Nth open beam steel-concrete composite pier (100). Unlock the second outrigger (3), and the lifting cylinder of the second outrigger (3) will work to lift the second outrigger (3) and the ground beam (5) and move them away from the steel-concrete structure beam segment (200). Lock the second outrigger (3). Unlock the zero support leg (1), the lifting cylinder of the zero support leg (1) operates, lift the zero support leg (1), and the lifting cylinder of the zero support leg (1) maintains the lifting force.
9. A method for moving a bridge erecting machine adapted to a steel-concrete composite bridge without a cap beam, as described in claim 8, is characterized in that... S2 includes the following steps: The motor drives the second outrigger (3) to move forward. After the second outrigger (3) moves into place, the second outrigger (3) is unlocked. The lifting cylinder of the second outrigger (3) descends, so that the second outrigger (3) is positioned on the steel-concrete structure beam segment (200) and the second outrigger (3) is locked.
10. A method for moving a bridge erecting machine adapted to a steel-concrete composite bridge without a cap beam, as described in claim 9, is characterized in that... S4 includes the following steps: Unlock the second outrigger (3), and the lifting cylinder of the second outrigger (3) will work to lift the second outrigger (3) and the ground beam (5) and move them away from the steel-concrete structure beam segment (200). Lock the second outrigger (3). The motor drives the second outrigger (3) to move forward. After the second outrigger (3) moves into place, the second outrigger (3) is unlocked. The lifting cylinder of the second outrigger (3) descends, so that the second outrigger (3) is positioned on the steel-concrete structure beam segment (200) and the second outrigger (3) is locked.