Rotation device leveling construction method based on horizontal rotation type movable bridge

Abstract

The invention discloses a slewing device leveling construction method based on a flat turning type movable bridge, which comprises the following steps: S1, hoisting a slewing device to a specified position, constructing a 3D control network by using a total station, scanning a construction scene and the slewing device by using a 3D scanner, and forming a three-dimensional digital model through BIM (Building Information Modeling); s2, the center of the rotation device is positioned, the center error of a control point is strictly controlled within. Mm, the precision is improved by more than% compared with that of a traditional measurement method, the deviation of scanning data and a BIM model can be controlled within. Mm in cooperation with high-density scanning of more than or equal to points per square meter and encrypted acquisition of key parts, holographic digital replication of a construction scene is achieved, and the construction efficiency is improved. The non-contact and full-dimensional measurement mode not only avoids subjective errors of manual detection, but also greatly improves the deviation detection efficiency, provides an accurate data reference for subsequent leveling construction, and solves the problem of out-of-control accuracy caused by inaccurate measurement in large-diameter component assembly.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, specifically to a leveling construction method for a slewing device based on a horizontally rotating opening bridge. Background Technology

[0002] In the field of bridge engineering, horizontally rotating opening bridges are widely used because they can meet navigation requirements. The installation accuracy of the core component, the slewing device, directly determines the stability of the bridge's operation. In the early days, domestic and foreign slewing device leveling often used single shim adjustment or coarse measurement control, which was difficult to meet the flatness requirements under large-diameter and heavy-load conditions. Insufficient leveling accuracy often led to problems such as running jams and localized wear.

[0003] Furthermore, in the existing technology, during the construction of bridges, the following challenges are typically encountered: first, the flatness control of modular assembly of large-diameter components; second, the horizontal stability under dynamic loads; and third, the coordinated implementation of high-precision measurement and leveling. These three real-time situations can greatly affect the bridge construction process and its accuracy. Moreover, the existing leveling measurement and control process cannot meet the need for higher precision adjustments in a timely manner. Therefore, a leveling construction method based on a slewing device for a horizontally rotating opening bridge is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a leveling construction method for a slewing device based on a horizontally rotating opening bridge, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a leveling construction method for a slewing device based on a horizontally rotating opening bridge, comprising the following steps:

[0006] S1. Hoist the slewing device to the designated position, construct a 3D control network using a total station, and scan the construction scene and slewing device using a 3D scanner to form a three-dimensional digital model through BIM;

[0007] S2. Position the center of the rotary device, install a steel wedge-shaped pad at the center, install them in a radial order from the center to the surrounding area, position multiple wedge-shaped pads according to their numbers, and weld and fix the lower plate to a horizontal state.

[0008] S3. Use an electronic level with a value of at least 0.02 mm / m to check point by point to ensure the absolute elevation of the top surface of the pad. After the elevation is determined, install the intermediate column.

[0009] S4. During column installation, a laser tracker is used to monitor the verticality of the column in real time. The bottom steel wedge pad is used in conjunction with a 0.1-2mm copper pad for horizontal adjustment to ensure the verticality deviation of the column. A total station is used to calibrate the correspondence between the center position of the column and the control network to form a correspondence quantity. The correspondence quantity is used as data support for 3D scanner to scan the construction scene to form real-time monitoring.

[0010] Preferably, when constructing the 3D control network in S1, at least three reference point verification steps are added, and the "round-trip observation method" is used to eliminate system errors, with the positional error of the control network points ≤ 0.3 mm.

[0011] Preferably, in step S1, when scanning the construction scene and the rotating device, the scanning density is set to ≥500 points per square meter, and the scanning of key parts such as the flange surface and bolt holes of the rotating device is intensified. The scanning data is compared with the BIM model, and if the deviation exceeds 0.2mm, the scanning is re-calibrated.

[0012] Preferably, in step S4, before installing the intermediate column, the 3D control network is calibrated again with a total station. If the deviation exceeds 0.2mm when compared with the initial control network data, the elevation of the pad is readjusted to ensure the accuracy of the column installation reference.

[0013] Preferably, the rotary device in S1 includes an upper annular frame and a lower rotary frame. Multiple central splicing frames are fixedly connected to the inner rings of both the upper and lower rotary frames. An inner central annular frame is fixedly connected to the outside of each of the multiple central splicing frames. A central bearing insert is fixedly connected to the center of each inner central annular frame. The intermediate column in S1 is inserted into the interior of the central bearing insert. Multiple rotary bearing seats are rotatably connected to the lower rotary frame. The rotary bearing seats are located between the lower rotary frame and the upper annular frame. A pin-toothed track is fixedly connected to the outer ring of the lower rotary frame. A driving structure is fixedly connected to the outer ring of the upper annular frame, and the driving structure meshes with the pin-toothed track. A lower central insert ring is fixedly connected to the center of the inner central annular frame located at the center of the lower rotary frame. The lower central insert ring is located below the central bearing insert. A central rotary body connects the multiple lower rotary frames and the multiple upper annular frames.

[0014] Preferably, the pin tooth track includes an upper annular plate and a lower annular plate, both of which are fixedly connected to the outer wall of the lower rotary frame. The upper annular plate is located above the lower annular plate, and track teeth are fixedly connected to the adjacent side of the upper and lower annular plates.

[0015] Preferably, a plurality of rotary positioning plates are fixedly connected to the upper annular plate. The plurality of rotary positioning plates are used to divide and measure the number of track teeth. The side of the rotary positioning plate near the lower rotary frame is fixedly connected to the lower rotary frame.

[0016] Preferably, the drive structure includes multiple mounting seats. The side of the mounting seat near the upper annular frame is fixedly connected to the outer wall of the upper annular frame by bolts. A drive motor is installed inside the mounting seat. An adjusting gear is fixedly connected to the output shaft of the drive motor. The adjusting gear meshes with the pin tooth track. Multiple reinforcing ribs are installed on the outside of the mounting seat. Multiple first inner hanging ear plates are fixedly connected to the inner ring of the lower slewing frame. Multiple second inner hanging ear plates are fixedly connected to the outside of the inner central annular frame located at the center of the lower slewing frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention employs a collaborative measurement scheme combining a total station 3D control network, BIM modeling, and 3D scanning. Through verification at no fewer than 10 benchmark points and the "return observation method," the positional error of the control network points is strictly controlled within 0.mm, improving accuracy by more than 100% compared to traditional measurement methods. Combined with high-density scanning of ≥ 10 points per square meter and encrypted acquisition of key parts, the deviation between the scanned data and the BIM model can be controlled within 0.mm, achieving a holographic digital replication of the construction scene. This non-contact, multi-dimensional measurement method not only avoids the subjective errors of manual inspection but also greatly improves the efficiency of deviation detection, providing accurate data benchmarks for subsequent leveling construction and solving the problem of "inaccurate measurement leading to loss of accuracy control" in the assembly of large-diameter components. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the construction process according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the rotary device in an embodiment of the present invention;

[0021] Figure 3 This is an exploded structural diagram of the rotating device in an embodiment of the present invention;

[0022] Figure 4 This is a partial structural diagram of the rotating device and the bridge in an embodiment of the present invention;

[0023] Figure 5 This is an embodiment of the present invention. Figure 3 A magnified structural diagram of area A in the diagram;

[0024] Figure 6 This is an embodiment of the present invention. Figure 3 A magnified structural diagram of region B in the diagram.

[0025] In the diagram: 100, Upper ring frame; 101, Central splicing frame; 102, Inner central ring frame; 103, Central bearing insert seat; 104, Lower slewing frame; 105, Central slewing body; 106, Slewing bearing seat; 107, Pin toothed track; 1071, Upper ring plate; 1072, Lower ring plate; 1073, Track teeth; 1074, Slewing positioning plate; 108, Mounting seat; 109, Drive motor; 110, Lower central insert ring; 200, First inner hanging ear plate; 201, Second inner hanging ear plate; 202, Reinforcing rib. Detailed Implementation

[0026] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figure 1 As shown, this application discloses a leveling construction method for a slewing device based on a horizontally rotating opening bridge, comprising the following steps:

[0028] S1. Hoist the slewing device to the designated position, construct a 3D control network using a total station, and scan the construction scene and slewing device using a 3D scanner to form a three-dimensional digital model through BIM.

[0029] S2. Position the center of the rotary device, install a steel wedge-shaped pad at the center, install them in a radial order from the center to the surrounding area, position multiple wedge-shaped pads according to their numbers, and weld and fix the lower plate to a horizontal state.

[0030] S3. Use an electronic level with a value of at least 0.02 mm / m to check point by point to ensure the absolute elevation of the top surface of the pad. After the elevation is determined, install the intermediate column.

[0031] S4. During column installation, a laser tracker is used to monitor the verticality of the column in real time. The bottom steel wedge pad is used in conjunction with a 0.1-2mm copper pad for horizontal adjustment to ensure the verticality deviation of the column. A total station is used to calibrate the correspondence between the center position of the column and the control network to form a correspondence quantity. The correspondence quantity is used as data support for 3D scanner to scan the construction scene to form real-time monitoring.

[0032] Specifically, when constructing the 3D control network in S1, at least three benchmark point verification steps are added, and the "round-trip observation method" is used to eliminate systematic errors, with the control network point position error ≤0.3m.

[0033] Specifically, in S1, when scanning the construction scene and the rotating device, the scanning density is set to ≥500 points per square meter. The scanning of key parts such as the flange surface and bolt holes of the rotating device is intensified. The scan data is compared with the BIM model. If the deviation exceeds 0.2mm, the scan is re-calibrated.

[0034] Specifically, during construction, the slewing device is hoisted to the designated position, and a 3D control network is constructed using a Topcon GPT-9000A total station. Four benchmark point verification steps are set up, and the positional error of the control network points is controlled within 0.25mm using the "return observation method". A 3D scanner is used to scan the construction scene and the slewing device at a density of 600 points per square meter, with intensified scanning of key parts such as flange faces and bolt holes. The scanned data is compared with the BIM model to ensure that the deviation does not exceed 0.15mm.

[0035] Then, locate the center of the rotary device, install steel wedge-shaped pads with an inclination of 1:50, and position 8 wedge-shaped pads in a radial order from the center outwards. Weld the lower plate to fix it and level it to a horizontal state.

[0036] In S3, a 0.02mm / m electronic level is used to check each point to ensure that the absolute elevation error of the top surface of the pad meets the requirements. Then, the intermediate column is installed and inserted into the center bearing connector.

[0037] In S4, the 3D control network is recalibrated before installing the intermediate column. After confirming that there is no deviation, the verticality of the column is monitored in real time using a Leica AT960 laser tracker. The verticality deviation of the column is controlled to ≤1mm / m by fine adjustment using a bottom steel wedge plate and a 0.1-2mm copper shim. At the same time, a total station is used to calibrate the correspondence between the center position of the column and the control network to form real-time monitoring data support.

[0038] The technical solutions described in the above embodiments of this application have at least the following technical effects or advantages: Through precise measurement control and graded leveling, the flatness error of the slewing device is ≤±0.15mm, which is 30% higher than the standard requirement. This effectively solves the problems of flatness control of large-diameter component assembly and horizontal stability under dynamic loads, ensuring smooth opening and closing of the bridge and safe and reliable operation.

[0039] like Figures 2-5As shown, the rotary device in S1 includes an upper annular frame 100 and a lower rotary frame 104. Multiple central splicing frames 101 are fixedly connected to the inner rings of both the upper annular frame 100 and the lower rotary frame 104. An inner central annular frame 102 is fixedly connected to the outside of each of the multiple central splicing frames 101. A central bearing insertion seat 103 is fixedly connected to the center of the inner central annular frame 102. The intermediate column in S3 is inserted into the interior of the central bearing insertion seat 103. Multiple rotary bearing seats 106 are rotatably connected to the lower rotary frame 104. Between the lower slewing frame 104 and the upper annular frame 100, a pin toothed track 107 is fixedly connected to the outer ring of the lower slewing frame 104, and a drive structure is fixedly connected to the outer ring surface of the upper annular frame 100. The drive structure is meshed with the pin toothed track 107. A lower center insertion ring 110 is fixedly connected to the center of the inner center annular frame 102 located at the center of the lower slewing frame 104. The lower center insertion ring 110 is located below the center bearing insertion seat 103. A central slewing body 105 is connected between the multiple lower slewing frames 104 and the multiple upper annular frames 100.

[0040] Specifically, the upper ring frame 100 and the lower slewing frame 104 are the core load-bearing frames of the slewing device. The lower slewing frame 104, as the lower foundation load-bearing component, needs to be precisely connected with the pre-embedded foundation. The upper ring frame 100, as the upper drive carrier, provides the installation reference for the drive structure. Together, they form the upper and lower support skeleton of the slewing device. The central splicing frame 101 is a transitional connector that connects the upper ring frame 100 and the lower slewing frame 104 with the inner central ring frame 102. Multiple sets of evenly distributed splicing frames ensure the concentricity of the inner central ring frame 102, which is the central reference component of the slewing device.

[0041] Furthermore, the central bearing plug-in seat 103 serves as the positioning and installation interface for the intermediate column. The intermediate column connects to the central bearing plug-in seat 103 via a plug-in connection, enabling rapid initial positioning of the column. This provides a foundation for subsequent fine-tuning of verticality using steel wedge-shaped pads and copper pads, preventing offset during column installation. The slewing bearing seat 106, located between the lower slewing frame 104 and the upper ring frame 100, is a rolling support component. Its function is to convert the rotation of the upper ring frame 100 into rolling friction, reducing running resistance and ensuring the stability of the horizontality when the upper and lower frames rotate relative to each other, preventing the reduction of leveling accuracy due to uneven friction. The lower central plug-in ring 110, located below the central bearing plug-in seat 103, is a dual positioning guarantee component. On one hand, it assists the central bearing plug-in seat 103 in calibrating the center position; on the other hand, it provides additional support for the intermediate column, enhancing the stability of the column under dynamic loads.

[0042] like Figures 2-5As shown, the pin tooth track 107 includes an upper annular plate 1071 and a lower annular plate 1072. Both the upper annular plate 1071 and the lower annular plate 1072 are fixedly connected to the outer wall of the lower slewing frame 104. The upper annular plate 1071 is located above the lower annular plate 1072. Track teeth 1073 are fixedly connected to the adjacent side of the upper annular plate 1071 and the lower annular plate 1072.

[0043] Specifically, the upper annular plate 1071 and the lower annular plate 1072 are the basic bearing plates of the pin tooth track 107. They are both fixed to the outer wall of the lower slewing frame 104. The upper and lower double-layer structure design can enhance the overall rigidity of the track and avoid track deformation due to driving load. The track teeth 1073 are fixed to the adjacent side of the upper annular plate 1071 and the lower annular plate 1072. They are the core of power meshing. The tooth profile accuracy and spacing uniformity directly affect the transmission stability of the drive structure.

[0044] like Figures 3-5 As shown, multiple rotary positioning plates 1074 are fixedly connected to the upper annular plate 1071. The multiple rotary positioning plates 1074 are used to divide the number of measuring track teeth 1073. The rotary positioning plate 1074 is fixedly connected to the lower rotary frame 104 on the side near the lower rotary frame 104.

[0045] Specifically, the segmented metering track teeth 1073, through the evenly distributed rotary positioning plates 1074, can divide the continuous pin tooth track 107 into multiple metering units, facilitating the counting of track teeth 1073 during construction and assisting in calibrating the rotation angle of the drive structure.

[0046] like Figures 1-5 As shown, the drive structure includes multiple mounting seats 108. The side of the mounting seat 108 near the upper ring frame 100 is fixedly connected to the outer wall of the upper ring frame 100 by bolts. A drive motor 109 is installed inside the mounting seat 108. An adjusting gear is fixedly connected to the output shaft of the drive motor 109. The adjusting gear meshes with the pin track 107. Multiple reinforcing ribs 202 are installed on the outside of the mounting seat 108. Multiple first inner hanging ear plates 200 are fixedly connected to the inner ring of the lower slewing frame 104. Multiple second inner hanging ear plates 201 are fixedly connected to the outside of the inner central ring frame 102 located at the center of the lower slewing frame 104.

[0047] Specifically, the drive motor 109 is installed on the outside of the upper ring frame 100 through the mounting base 108, and the upper ring frame 100 is driven to rotate by the adjusting gear on the outside of the drive motor 109 in conjunction with the pin track 107, thereby realizing the rotation of the bridge as a whole. The first inner hanging ear plate 200 and the second inner hanging ear plate 201 are set to assist in the hoisting and hanging of the lower slewing frame 104.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A leveling construction method for a slewing device based on a horizontally rotating opening bridge, characterized in that, Includes the following steps: S1. Hoist the slewing device to the designated position, construct a 3D control network using a total station, and scan the construction scene and slewing device using a 3D scanner to form a three-dimensional digital model through BIM; S2. Position the center of the rotary device, install a steel wedge-shaped pad at the center, install them in a radial order from the center to the surrounding area, position multiple wedge-shaped pads according to their numbers, and weld and fix the lower plate to a horizontal state. S3. Use an electronic level with a value of at least 0.02 mm / m to check point by point to ensure the absolute elevation of the top surface of the pad. After the elevation is determined, install the intermediate column. S4. During column installation, a laser tracker is used to monitor the verticality of the column in real time. The bottom steel wedge pad is used in conjunction with a 0.1-2mm copper pad for horizontal adjustment to ensure the verticality deviation of the column. A total station is used to calibrate the correspondence between the center position of the column and the control network to form a correspondence quantity. The correspondence quantity is used as data support for 3D scanner to scan the construction scene to form real-time monitoring.

2. The leveling construction method for a slewing device based on a horizontally rotating opening bridge according to claim 1, characterized in that: When constructing the 3D control network in S1, at least three reference point verification steps are added, and the "return observation method" is used to eliminate system errors, with the positional error of the control network points ≤ 0.3 mm.

3. The leveling construction method for a slewing device based on a horizontally rotating opening bridge according to claim 1, characterized in that: In S1, when scanning the construction scene and the rotary device, the scanning density is set to ≥500 points per square meter. The scanning of key parts such as the flange surface and bolt holes of the rotary device is intensified. The scanning data is compared with the BIM model. If the deviation exceeds 0.2mm, the scanning is re-calibrated.

4. The leveling construction method for a slewing device based on a horizontally rotating opening bridge according to claim 1, characterized in that: In step S4, before installing the intermediate column, the 3D control network is calibrated again with a total station. If the deviation exceeds 0.2mm, the elevation of the pad is readjusted to ensure the accuracy of the column installation reference.

5. The leveling construction method for a slewing device based on a horizontally rotating opening bridge according to claim 1, characterized in that: The rotating device in S1 includes an upper ring frame (100) and a lower rotating frame (104). Multiple central splicing frames (101) are fixedly connected to the inner rings of both the upper ring frame (100) and the lower rotating frame (104). An inner central ring frame (102) is fixedly connected to the outside of each of the multiple central splicing frames (101). A central bearing insertion seat (103) is fixedly connected to the center of the inner central ring frame (102). The intermediate column in S3 is inserted into the interior of the central bearing insertion seat (103). Multiple rotating bearing seats (106) are rotatably connected to the lower rotating frame (104). The rotating bearing seats (106) are located at the lower... Between the slewing frame (104) and the upper annular frame (100), a pin toothed track (107) is fixedly connected to the outer ring of the lower slewing frame (104), and a driving structure is fixedly connected to the outer ring surface of the upper annular frame (100). The driving structure meshes with the pin toothed track (107). A lower central insertion ring (110) is fixedly connected to the center of the inner central annular frame (102) located at the center of the lower slewing frame (104). The lower central insertion ring (110) is located below the central bearing insertion seat (103). A central slewing body (105) is connected between the multiple lower slewing frames (104) and the multiple upper annular frames (100).

6. The leveling construction method for a slewing device based on a horizontally rotating opening bridge according to claim 5, characterized in that: The pin-tooth track (107) includes an upper annular plate (1071) and a lower annular plate (1072). Both the upper annular plate (1071) and the lower annular plate (1072) are fixedly connected to the outer wall of the lower rotary frame (104). The upper annular plate (1071) is located above the lower annular plate (1072). Track teeth (1073) are fixedly connected to the adjacent side of the upper annular plate (1071) and the lower annular plate (1072).

7. A leveling construction method for a slewing device based on a horizontally rotating opening bridge according to claim 6, characterized in that: Multiple rotary positioning plates (1074) are fixedly connected to the upper annular plate (1071). The multiple rotary positioning plates (1074) are used to divide and measure the number of track teeth (1073). The rotary positioning plate (1074) is fixedly connected to the lower rotary frame (104) on the side close to the lower rotary frame (104).

8. The leveling construction method for a slewing device based on a horizontally rotating opening bridge according to claim 7, characterized in that: The drive structure includes multiple mounting seats (108). The mounting seat (108) is fixedly connected to the outer wall of the upper ring frame (100) by bolts on the side near the upper ring frame (100). A drive motor (109) is installed inside the mounting seat (108). An adjusting gear is fixedly connected to the output shaft of the drive motor (109). The adjusting gear meshes with the pin tooth track (107). Multiple reinforcing ribs (202) are installed on the outside of the mounting seat (108). Multiple first inner hanging ear plates (200) are fixedly connected to the inner ring of the lower slewing frame (104). Multiple second inner hanging ear plates (201) are fixedly connected to the outside of the inner central ring frame (102) located at the center of the lower slewing frame (104).

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