Construction method for precise centering of bridge rotation

Abstract

The application provides a construction method for precise centering of a bridge swivel, which comprises: adjusting the elevation of the swivel bridge, and setting a limiting and adjusting device on the annular surface of the support leg of the swivel bridge after the completion of the elevation adjustment; the limiting and adjusting device is set on the annular surface of the support leg of the swivel bridge and comprises an opening plate, a limiting piece and an adjusting piece; the opening plate is vertically set on the annular surface of the support leg, the support leg is located between the upper turntable and the lower turntable of the bridge swivel, the upper end of the support leg is fixedly connected with the upper turntable, and the lower end is spaced from the lower turntable; the limiting piece penetrates through the opening plate and is slidably connected with the lower turntable at the bottom; the adjusting piece comprises a top adjusting nut and a bottom adjusting nut, the top adjusting nut is connected with the limiting piece and abuts against the top of the opening plate, and the bottom adjusting nut is connected with the limiting piece and abuts against the bottom of the opening plate. That is, the limiting and adjusting device can inhibit the upward or downward component force generated, thereby preventing the change of the elevation caused by the axial centering, so as to improve the construction precision.

Description

Technical Field

[0001] This application relates to the field of bridge construction, specifically to a construction method for precise alignment during bridge rotation. Background Technology

[0002] The precise alignment of a rotating bridge generally begins when the difference in arc length between the longitudinal centerline (bridge axis) of the superstructure and the design target value is approximately 0.6m to 0.3m. This mainly involves two aspects: First, the alignment of the bridge axis is achieved by repeatedly moving the jacks to align the longitudinal centerline (bridge axis) of the superstructure with the design value. Second, the adjustment of the bridge elevation is achieved by repeatedly raising the support legs with vertical jacks to match the elevation of the superstructure with the design value.

[0003] The alignment of the bridge axis and the adjustment of the bridge elevation are carried out separately. When the precise alignment of the rotating bridge begins, the elevation of the rotating bridge is adjusted first. After the adjustment is completed, the axis of the rotating bridge is aligned. However, in the actual construction process, when the traction device applies a horizontal rotational force to the upper turntable of the rotating bridge during the alignment of the bridge axis, it will always generate a certain upward or downward component force on the upper turntable, which will cause the bridge elevation to change, and thus affect the elevation after construction to not meet the target design value. Summary of the Invention

[0004] This application provides a construction method for precise alignment during bridge rotation, in order to solve the problem in related technologies that the alignment process of a rotating bridge axis changes the actual elevation of the already adjusted rotating bridge.

[0005] In a first aspect, a construction method for precise alignment of a bridge during rotation is provided, comprising: adjusting the elevation of the rotating bridge; after the elevation adjustment is completed, setting a limiting adjustment device on the annular surface of the supporting foot of the rotating bridge; the limiting adjustment device is located on the annular surface of the supporting foot of the rotating bridge, and includes an opening plate, a limiting component, and an adjusting component; the opening plate is vertically set on the annular surface of the supporting foot, the supporting foot is located between the upper and lower turntables of the bridge rotation, the upper end of the supporting foot is fixedly connected to the upper turntable, and the lower end is disconnected from the lower turntable; the limiting component penetrates through the opening plate and is slidably connected to the lower turntable at its bottom; the adjusting component includes a top adjusting nut and a bottom adjusting nut, the top adjusting nut is connected to the limiting component and abuts against the top of the opening plate, and the bottom adjusting nut is connected to the limiting component and abuts against the bottom of the opening plate.

[0006] In some embodiments, adjusting the elevation of the rotating bridge includes the following steps: obtaining a first difference between the current elevation and the target elevation of the rotating bridge; calculating the elevation adjustment value of the support foot based on the first difference, thereby obtaining the target elevation value and allowable difference of the support foot; continuously adjusting the elevation of the rotating bridge and obtaining the actual elevation value of the support foot after each adjustment, until the absolute value of the difference between the actual elevation value and the target elevation value is not greater than the allowable difference.

[0007] In some embodiments, the elevation adjustment value of the support foot of the rotating bridge is calculated based on the first difference, which includes the following steps: obtaining the rotational cantilever length L of the rotating bridge (8), denoting the rotational arc of the rotating bridge (8) as α, and the first difference as H, then H=Lα;

[0008] Obtain the rotation radius R of the support leg (5) corresponding to the length of the rotating cantilever, and denote the rotation arc of the support leg (5) as β and the elevation adjustment value as h, then h=Rβ;

[0009] Since the rotation arc of the rotating bridge (8) is the same as the rotation arc of the supporting leg (5), i.e., α = β, then we have

[0010] In some embodiments, after the elevation adjustment of the rotating bridge is completed, a limit adjustment device is installed; the centering of the axis of the rotating bridge is adjusted in multiple steps. After each adjustment, the elevation of the rotating bridge is checked. If there is a deviation, the limit adjustment device is adjusted so that the elevation of the rotating bridge reaches the target design value. If there is no deviation, the centering of the axis continues.

[0011] In some embodiments, if there is a deviation, the limit adjustment device is adjusted so that the elevation of the rotating bridge reaches the target design value. This includes the following steps: calculating a second difference between the current elevation and the target elevation of the rotating bridge; when the current elevation of the rotating bridge is greater than the target elevation, all bottom adjusting nuts are simultaneously lowered by the second difference, and then all top adjusting nuts are lowered until they abut against the opening plate; when the current elevation of the rotating bridge is less than the target elevation, all top adjusting nuts are raised by the second difference, and then all bottom adjusting nuts are simultaneously raised until the opening plate abuts against the corresponding top adjusting nut.

[0012] In some embodiments, the limiting member includes an adjusting screw and a roller, the adjusting screw passing through the perforated plate, and the roller being fixedly connected to the bottom of the adjusting screw and rotatably connected to the lower turntable.

[0013] In some embodiments, the adjusting member further includes an angle measuring device for obtaining the rotation angle of the top adjusting nut and the bottom adjusting nut.

[0014] In some embodiments, both the top adjusting nut and the bottom adjusting nut are provided with angular scale lines.

[0015] In some embodiments, the adjusting screw is provided with scale lines.

[0016] In some embodiments, each support leg is provided with multiple limit adjustment devices at equal intervals along its circumferential surface.

[0017] The beneficial effects of the technical solutions provided in this application include:

[0018] This application proposes a construction method for precise alignment during bridge rotation. A limiting adjustment device is installed on the annular surface of the support foot, mainly comprising an orifice plate, a limiting component, and an adjusting component. The adjusting component includes a top adjusting nut and a bottom adjusting nut. The orifice plate is located on the annular surface of the support foot, and the limiting component passes through the orifice plate. Furthermore, the top and bottom adjusting nuts can be used to fix the limiting component to the orifice plate, i.e., the limiting component is fixedly supported on the lower turntable. This provides support and fixation after the elevation adjustment of the rotated bridge is completed. Specifically, when the axis of the rotated bridge is aligned, the limiting adjustment device can suppress the upward or downward component forces generated, thereby preventing changes in the already adjusted elevation. Furthermore, if minor changes occur, they can be reasonably adjusted using the top and bottom adjusting nuts. First, the elevation of the rotating bridge is adjusted. After the adjustment is completed, a limit adjustment device is set on the ring surface of the support foot to support the lower turntable and the support foot at the same time. This can suppress the upward or downward component force generated when the axis is aligned. The process of aligning the axis is divided into multiple adjustments. Each adjustment can reasonably adjust the limit adjustment device according to the changes in elevation, so that the elevation of the rotating bridge is within the target design value. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the relevant structure of the limit adjustment device provided in the embodiments of this application;

[0020] Figure 2 A schematic diagram showing the relative positions of the upper turntable, lower turntable, support legs, and limit adjustment device provided in an embodiment of this application.

[0021] Figure 3 This is a schematic diagram of the structure for adjusting the elevation of a rotating bridge provided in an embodiment of this application;

[0022] Figure 4 This is a top view of the upper turntable structure provided in an embodiment of this application;

[0023] Figure 5 This is a schematic diagram of the construction method for precise alignment of a rotating bridge provided in an embodiment of this application.

[0024] In the diagram: 1. Limit adjustment device; 2. Limiting component; 21. Adjusting screw; 22. Roller; 3. Adjusting component; 31. Top adjusting nut; 32. Bottom adjusting nut; 4. Perforated plate; 5. Support foot; 6. Upper turntable; 7. Lower turntable; 8. Rotating bridge. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0027] Firstly, embodiments of this application provide a construction method for precise alignment during bridge rotation, referring to... Figure 1-4 , Figure 1 A schematic diagram of the relevant structure of the adjustment and fixing component provided in the embodiments of this application. A construction method for precise alignment of a bridge during rotation, comprising:

[0028] S1. Adjust the elevation of the rotating bridge 8. After the elevation adjustment is completed, a limiting adjustment device 1 is set on the annular surface of the support leg 5 of the rotating bridge 8. The limiting adjustment device 1 is set on the annular surface of the support leg 5 of the rotating bridge 8, and includes an opening plate 4, a limiting member 2, and an adjusting member 3. The opening plate 4 is vertically set on the annular surface of the support leg 5. The support leg 5 is located between the upper turntable 6 and the lower turntable 7 of the bridge rotation. The upper end of the support leg 5 is fixedly connected to the upper turntable 6, and the lower end is disconnected from the lower turntable 7. The limiting member 2 passes through the opening plate 4 and is slidably connected to the lower turntable 7 at its bottom. The adjusting member 3 includes a top adjusting nut 31 and a bottom adjusting nut 32. The top adjusting nut 31 is connected to the limiting member 2 and abuts against the top of the opening plate 4, and the bottom adjusting nut 32 is connected to the limiting member 2 and abuts against the bottom of the opening plate 4.

[0029] In this embodiment, the elevation of the rotating bridge 8 is first adjusted. After the adjustment is completed, a limiting adjustment device 1 is set on the annular surface of the support leg 5 to simultaneously support the lower turntable 7 and the support leg 5, thereby suppressing the upward or downward component force generated when the axis is aligned. The axis alignment process is divided into multiple adjustments. Each adjustment can reasonably adjust the limiting adjustment device 1 according to the changes in elevation, so that the elevation of the rotating bridge 8 is within the target design value. The limiting adjustment device 1 is set on the annular surface of the support leg, which includes an opening plate 4, a limiting component 2, and an adjusting component 3. The adjusting component 3 includes a top adjusting nut 31 and a bottom adjusting nut 32. The opening plate 4 is set on the annular surface of the support leg 5. The limiting member 2 penetrates the perforated plate 4. Furthermore, the limiting member 2 can be fixed to the perforated plate 4 by using the top adjusting nut 31 and the bottom adjusting nut 32. That is, the limiting member 2 is fixedly supported on the lower turntable 7. Thus, after the elevation adjustment of the rotating bridge 8 is completed, it plays a supporting and fixing role. That is, when the axis of the rotating bridge 8 is aligned, the limiting adjustment device 1 can suppress the upward or downward component force generated, thereby preventing the already adjusted elevation from changing. Moreover, if a slight change occurs, it can be reasonably adjusted by using the top adjusting nut 31 and the bottom adjusting nut 32. This solves the problem in the prior art that the axis alignment process of the rotating bridge will change the actual elevation of the adjusted rotating bridge.

[0030] Furthermore, in one embodiment, the limiting member 2 includes an adjusting screw 21 and a roller 22. The adjusting screw 21 passes through the perforated plate 4, and the roller 22 is fixedly connected to the bottom of the adjusting screw 21 and is rotatably connected to the lower turntable 7.

[0031] In this embodiment, the adjusting screw 21 passes through the perforated plate 4, and a roller 22 is fixedly connected to the bottom of the adjusting screw 21. The roller 22 is rotatably connected to the lower turntable 7. This arrangement has two effects: firstly, the connection between the adjusting screw 21 and the roller 22 can support and fix the support leg 5 to the lower turntable 7; secondly, the design of the roller 22 can ensure that the elevation of the rotating bridge 8 does not change while allowing the upper turntable 6 to roll smoothly on the lower turntable 7 during subsequent axis alignment. The design of the roller 22 enables smooth adjustment during axis alignment, reduces frictional resistance, and thus improves the flexibility of adjustment.

[0032] Furthermore, in one embodiment, the adjusting member 3 also includes an angle measuring device for obtaining the rotation angle of the top adjusting nut 31 and the bottom adjusting nut 32.

[0033] In this embodiment, the angle measuring device is used to acquire the rotation angle of the top adjusting nut 31 and the bottom adjusting nut 32 in real time, providing instant data feedback. Utilizing a high-precision sensor ensures the accuracy of the acquired angle data, which helps the operator make necessary fine adjustments during adjustment. Real-time angle feedback allows the operator to better grasp the progress and results of the adjustment process, thereby improving the overall accuracy of the adjustment. In some embodiments, the angle measuring device can be an existing angle measuring instrument or angle sensor.

[0034] Furthermore, in one embodiment, both the top adjusting nut 31 and the bottom adjusting nut 32 are provided with angular scale lines.

[0035] In this embodiment, the marked values ​​of the degrees are determined according to the actual dimensions of the top adjusting nut 31, the bottom adjusting nut 32, and the adjusting screw 21 during construction. That is, the larger the size, the more refined the marked values ​​will be. The clearly visible angle scale lines facilitate direct visual inspection during the adjustment process. Through the angle scale lines, operators no longer need to rely on additional tools or equipment during adjustment. They can directly judge the progress and status of the adjustment by looking at the scale lines. The angle scale lines provide a visual angle reference to help operators ensure that the required angle position is reached when turning the nut, thereby improving the accuracy of centering.

[0036] Furthermore, in one embodiment, the adjusting screw 21 is provided with scale lines.

[0037] In this embodiment, clear scale lines are set on the adjusting screw 21, so that the upward or downward adjustment distance of the top adjusting nut 31 and the bottom adjusting nut 32 can be detected in real time, making the elevation adjustment more precise. It should be noted that the surface of the adjusting screw 21 is evenly distributed with clear scale lines. These scale lines can be made of obvious colors or materials to ensure that they can be clearly identified under different lighting conditions. Operators can use the scale lines to determine the adjustment position, thereby accurately controlling the amplitude of elevation adjustment.

[0038] Furthermore, in one embodiment, each support leg 5 is provided with multiple limiting adjustment devices 1 at equal intervals along its circumferential surface.

[0039] In this embodiment, each support leg 5 is equipped with multiple limiting adjustment devices 1 on its annular surface, which are evenly distributed. This design ensures more balanced and stable support in each direction during bridge rotation; the evenly spaced layout helps reduce uneven load distribution on the support leg 5, thereby improving construction safety. Each limiting adjustment device 1 operates independently, and operators can adjust each device at any time as needed. This flexibility makes fine-tuning possible, further improving the accuracy of elevation adjustment.

[0040] refer to Figure 5 , Figure 5 This is a schematic diagram of the construction method for precise alignment of a rotating bridge provided in an embodiment of this application;

[0041] S2. After the elevation adjustment of the rotating bridge 8 is completed, the limit adjustment device 1 is installed. The centering of the axis of the rotating bridge 8 is adjusted in multiple steps. After each adjustment, the elevation of the rotating bridge 8 is checked. If there is a deviation, the limit adjustment device 1 is adjusted so that the elevation of the rotating bridge 8 reaches the target design value. If there is no deviation, the centering of the axis continues.

[0042] In this construction method, the elevation of the rotating bridge 8 is first adjusted. After the adjustment is completed, a limiting adjustment device 1 is set on the annular surface of the support foot 5 to support the lower turntable 7 and the support foot 5 simultaneously. This suppresses the upward or downward component force generated when the axis is aligned. The process of aligning the axis is divided into multiple adjustments. Each adjustment can reasonably adjust the limiting adjustment device according to the changes in elevation, so that the elevation of the rotating bridge 8 is within the target design value.

[0043] Furthermore, in one embodiment, adjusting the elevation of the rotating bridge includes the following steps:

[0044] S11. Obtain the first difference between the current elevation and the target elevation of the rotating bridge 8; calculate the elevation adjustment value of the support leg 5 based on the first difference, and then obtain the target elevation value and allowable difference of the support leg 5; continuously adjust the elevation of the rotating bridge 8 and obtain the actual elevation value of the support leg 5 after each adjustment, until the absolute value of the difference between the actual elevation value and the target elevation value is not greater than the allowable difference.

[0045] In this construction method, elevation measuring equipment (such as a level or laser level) is used to accurately measure the current elevation of the rotating bridge 8. The difference between the current elevation value and the preset target elevation is calculated to obtain the first difference. Based on the first difference, and assuming the rotation angle is the same, the target elevation value of the support leg 5 can be obtained. Then, according to the actual construction requirements, the allowable difference for adjustment is obtained. Based on the calculated target elevation value, vertical jacks are used to continuously adjust the support leg 5. After each adjustment, the actual elevation value of the support leg 5 is obtained using measuring equipment, and the difference between the actual elevation value and the target elevation value is calculated. If the absolute value of the difference is less than or equal to the allowable difference, it indicates that the elevation adjustment has met the requirements and the adjustment process is complete. If the absolute value of the difference is greater than the allowable difference, the adjustment continues. Through systematic steps and meticulous calculations, high accuracy is ensured for each elevation adjustment.

[0046] Furthermore, in one embodiment, calculating the elevation adjustment value of the support foot of the rotating bridge based on the first difference includes the following steps:

[0047] S111. Obtain the rotational cantilever length L of the rotating bridge 8, denote the rotational arc of the rotating bridge 8 as α, and the first difference as H, then H = Lα; Obtain the rotational radius R of the support leg 5 corresponding to the rotational cantilever length, denote the rotational arc of the support leg 5 as β, and the elevation adjustment value as h, then h = Rβ.

[0048] S112. Since the rotation arc of the rotating bridge 8 is the same as the rotation arc of the support leg 5, i.e., α = β, then we have

[0049] In this construction method, refer to Figure 3 A measuring point is set on the support leg 5 to measure the distance L from the measuring point to the end of the rotating bridge 8. In some embodiments, when it is inconvenient to determine the distance from the measuring point to the end of the rotating bridge 8, any fixed point on the support leg 5 can be selected and regarded as the measuring point. That is, the distance between the fixed point and the end of the rotating bridge 8 is regarded as the rotational cantilever length L of the bridge rotation. Based on the fact that the rotation arc of the rotating bridge 8 is the same as the rotation arc of the support leg 5, the first difference H between the current elevation and the target elevation of the rotating bridge 8 can be converted into the target elevation value h of the support leg 5, which is convenient for adjustment and inspection.

[0050] Furthermore, in one embodiment, if there is a deviation, the limit adjustment device 1 is adjusted so that the elevation of the rotating bridge 8 reaches the target design value, which includes the following steps:

[0051] S21. Calculate the second difference between the current elevation and the target elevation of the rotating bridge 8. When the current elevation of the rotating bridge 8 is greater than the target elevation, simultaneously lower all the bottom adjusting nuts 32 by the second difference, and then lower all the top adjusting nuts 31 until they abut against the opening plate 4. When the current elevation of the rotating bridge 8 is less than the target elevation, raise all the top adjusting nuts 31 by the second difference, and then simultaneously raise all the bottom adjusting nuts 32 until the opening plate 4 abuts against the corresponding top adjusting nut 31.

[0052] In this construction method, by detecting the difference between the current elevation and the target elevation, the nuts of the limit adjustment device 1 are adjusted reasonably to ensure that the elevation of the rotating bridge 8 meets the design requirements. Specifically, when the current elevation is greater than the target elevation, all bottom adjustment nuts 32 are lowered to the same horizontal height, and all top adjustment nuts 31 are lowered to abut against the opening plate 4 for limit adjustment. When the current elevation is less than the target elevation, all top adjustment nuts 31 are raised to the required height, and all bottom adjustment nuts 32 are raised to abut against the corresponding top adjustment nuts 31 on the opening plate 4 for elevation adjustment and limit.

[0053] The method of this embodiment will be further explained below with reference to specific data:

[0054] If the length L of the rotating cantilever of a certain rotating bridge is 49.5m, the required rotation radius R of the support leg is 8m, and the first elevation difference H that needs to be adjusted is 0.05m, then the target elevation value h that needs to be adjusted is 0.008m.

[0055] At this point, the elevation of the rotating bridge can be adjusted, i.e., S11 is performed. The known allowable difference is 0.001m. After the elevation is adjusted using vertical jacks, the difference between the actual elevation and the target elevation is 0.0005m. The first difference between the current elevation and the target elevation of the rotating bridge 8 is 0.001m. The target design range should be within 0.003m, i.e., the first difference is within the target design range at this time.

[0056] Next, two limit adjustment devices 1 are installed at equal intervals on the annular surface of each support leg 5. Of course, three or four are also acceptable. After installation, axis alignment can be performed. During axis alignment, the first difference between the current elevation and the target elevation of the rotating bridge 8 is checked. If there is no error, adjustment continues. After axis alignment, it is found that the first difference between the current elevation and the target elevation of the rotating bridge 8 is 0.012m. At this point, the limit adjustment device 1 needs to be adjusted. First, the relationship between the rotation angle and vertical position height of the top adjusting nut 31 and the bottom adjusting nut 32 is obtained. That is, when the top adjusting nut 31 and the bottom adjusting nut 32 rotate one revolution (a = 360°), the vertical displacement distance b1 of the top adjusting nut 31, the bottom adjusting nut 32, the perforated plate 4, and the rotating bridge 8 is 0.005m. Based on the fact that the unit displacement distance of the rotating bridge 8 is the same for every 1° rotation, and the required vertical displacement distance b2 is currently 0.012m, the required rotation degree of the top adjusting nut 31 and the bottom adjusting nut 32 can be obtained. To break it down into two 144° rotations, simply rotate the top adjusting nut 31 and the bottom adjusting nut 32 two 144° rotations.

[0057] This method monitors the difference between the current elevation and the target elevation in real time and adjusts each nut of the limit adjustment device 1 accordingly to ensure that the elevation of the rotating bridge 8 meets the design requirements.

[0058] The beneficial effects of this invention include:

[0059] This application provides a construction method for precise alignment during bridge rotation, comprising an orifice plate 4, a limiting member 2, and an adjusting member 3. The adjusting member 3 includes a top adjusting nut 31 and a bottom adjusting nut 32. The orifice plate 4 is located on the annular surface of the support leg 5, and the limiting member 2 passes through the orifice plate 4. Furthermore, the top adjusting nut 31 and the bottom adjusting nut 32 can be used to fix the limiting member 2 to the orifice plate 4, that is, the limiting member 2 is fixedly supported on the lower turntable 7. Thus, after the elevation adjustment of the rotating bridge 8 is completed, it plays a supporting and fixing role. That is, when the axis of the rotating bridge 8 is aligned, the limiting and adjusting device 1 can suppress the upward or downward component force generated, thereby preventing the already adjusted elevation from changing. Furthermore, if minor changes occur, they can be reasonably adjusted using the top adjusting nut 31 and the bottom adjusting nut 32, thus solving the problem in the prior art where the alignment process of the rotating bridge axis changes the actual elevation of the already adjusted rotating bridge. First, the elevation of the rotating bridge 8 is adjusted. After the adjustment is completed, a limit adjustment device 1 is set on the annular surface of the support leg 5 to simultaneously support the lower turntable 7 and the support leg 5, thereby suppressing the upward or downward component force generated during axis alignment. The axis alignment process is divided into multiple adjustments, and each adjustment can reasonably adjust the limit adjustment device according to the changes in elevation, so that the elevation of the rotating bridge 8 is within the target design value.

[0060] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0061] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.

[0062] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.

[0063] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0064] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.

[0065] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.

[0066] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A construction method for precise alignment of bridge rotation, characterized in that, The application relates to a height adjusting device for a rotating bridge (8). The height adjusting device (1) is arranged on the ring surface of the supporting leg (5) of the rotating bridge (8) and comprises an opening plate (4), a limiting piece (2) and an adjusting piece (3). The opening plate (4) is vertically arranged on the ring surface of the supporting leg (5), the supporting leg (5) is located between the upper rotating disc (6) and the lower rotating disc (7) of the bridge rotating body, the upper end of the supporting leg (5) is fixedly connected with the upper rotating disc (6), and the lower end is spaced from the lower rotating disc (7). The limiting piece (2) penetrates through the opening plate (4) and is slidably connected with the lower rotating disc (7) at the bottom. The adjusting piece (3) comprises a top adjusting nut (31) and a bottom adjusting nut (32). The top adjusting nut (31) is connected with the limiting piece (2) and abuts against the top of the opening plate (4), and the bottom adjusting nut (32) is connected with the limiting piece (2) and abuts against the bottom of the opening plate (4). After the height adjustment of the rotating bridge (8) is completed, the height adjusting device (1) is installed. The axis centering of the rotating bridge (8) is divided into multiple times of adjustment. After each adjustment, the height of the rotating bridge (8) is detected. If there is deviation, the height adjusting device (1) is adjusted so that the height of the rotating bridge (8) reaches the target design value. If there is no deviation, the axis centering is continuously performed. If there is deviation, the height adjusting device (1) is adjusted so that the height of the rotating bridge (8) reaches the target design value, which comprises the following steps. A second difference value between the current height and the target height of the rotating bridge (8) is calculated. When the current height of the rotating bridge (8) is greater than the target height, all the bottom adjusting nuts (32) are simultaneously adjusted downward by the second difference value, and then all the top adjusting nuts (31) are adjusted downward to abut against the opening plate (4). When the current height of the rotating bridge (8) is less than the target height, all the top adjusting nuts (31) are adjusted upward by the second difference value, and then all the bottom adjusting nuts (32) are simultaneously adjusted upward to abut against the opening plate (4). The limiting piece (2) comprises an adjusting screw (21) and a roller (22). The adjusting screw (21) penetrates through the opening plate (4), and the roller (22) is fixedly connected to the bottom of the adjusting screw (21) and is rollingly connected with the lower rotating disc (7). The height of the rotating bridge (8) is adjusted, which comprises the following steps.

2. The construction method for precise centering of bridge rotation according to claim 1, characterized in that, A first difference value between the current height and the target height of the rotating bridge (8) is obtained. According to the first difference value, the height adjusting value of the supporting leg (5) is calculated, and then the target height value and the allowable difference value of the supporting leg (5) are obtained. The height of the rotating bridge (8) is continuously adjusted, and the actual height value of the supporting leg (5) after each adjustment is obtained until the absolute value of the difference between the actual height value and the target height value is not greater than the allowable difference value. ​ 3. The construction method for precise centering of bridge rotation according to claim 2, characterized in that, According to the first difference, an elevation adjustment value of a support leg of the swivel bridge is calculated, comprising the following steps: A rotating cantilever length L of the rotating body bridge (8) is obtained, a rotating arc of the rotating body bridge (8) is recorded as α, and a first difference is recorded as H, so that ; The radius of rotation R of the foot (5) corresponding to the length of the rotating boom is obtained, the arc of rotation of the foot (5) is denoted as β, and the height adjustment value is denoted as h, so that ; The rotation arc of the swivel bridge (8) is the same as the rotation arc of the prop foot (5), i.e. Thus, there is .

4. The construction method for precise alignment of bridge swivel according to claim 1, characterized in that: The adjusting member (3) further comprises an angle measuring device for obtaining the rotation angle of the top adjusting nut (31) and the bottom adjusting nut (32).

5. The construction method for precise alignment of bridge swivel according to claim 1, characterized in that: The top adjusting nut (31) and the bottom adjusting nut (32) are both provided with angular graduation lines.

6. The construction method for precise alignment of bridge swivel according to claim 1, characterized in that: The adjusting screw (21) is provided with graduation lines.

7. The construction method for precise alignment of bridge swivel according to claim 1, characterized in that: Each of the support legs (5) is provided with a plurality of the limiting adjusting devices (1) at equal intervals along the ring surface thereof.

Images