Construction method for accurate centering of bridge swivel

Abstract

The invention provides a construction method for bridge swivel accurate centering, which comprises the following steps: adjusting the elevation of a swivel bridge, and after the elevation adjustment is completed, arranging a limit adjusting device on the ring surface of a supporting leg of the swivel bridge; the limiting and adjusting device is arranged on the annular face of a supporting foot of the swivel bridge and comprises a perforated plate, a limiting piece and an adjusting piece. The perforated plate is vertically arranged on the ring surface of the supporting leg, the supporting leg is positioned between an upper turntable and a lower turntable of the bridge swivel, the upper end of the supporting leg is fixedly connected with the upper turntable, and the lower end is separated from the lower turntable; the limiting piece penetrates through the perforated plate, and the bottom is slidably connected with the lower turntable; the adjusting part comprises a top adjusting nut and a bottom adjusting nut, the top adjusting nut is connected with the limiting part and abuts against the top of the perforated plate, and the bottom adjusting nut is connected with the limiting part and abuts against the bottom of the perforated plate. In other words, the limiting adjusting device can restrain generated upward or downward component force, and then axis centering is prevented from influencing the elevation change, so that the construction precision is improved.

Description

Technical Field

[0001] The present application relates to the field of bridge construction, and in particular to a construction method for precise centering of a bridge rotation. Background Art

[0002] The precise alignment of a rotating bridge generally starts when the arc length difference between the longitudinal center line of the upper rotating structure bridge (bridge axis) and the design target value is about 0.6m to 0.3m. It mainly refers to two aspects. The first aspect is the alignment of the bridge axis, which is achieved by multiple inching of the jack to achieve the alignment of the longitudinal center line of the upper rotating structure bridge (bridge axis) with the design value; the second aspect is the adjustment of the bridge elevation, which is achieved by multiple lifting of the support legs with vertical jacks to achieve the consistency of the upper rotating structure bridge elevation with the design value.

[0003] The bridge axis alignment and bridge elevation adjustment are carried out separately. At the beginning of the precise alignment of the rotating bridge, the elevation of the rotating bridge is adjusted first, and then the axis of the rotating bridge is aligned after the adjustment. However, in the actual construction process, when the bridge axis is aligned, when the traction device applies horizontal rotational force to the upper turntable of the rotating bridge, it will always generate a certain upward or downward component force on the upper turntable, causing the bridge elevation to change, which in turn affects the elevation after construction and does not meet the target design value. Summary of the invention

[0004] An embodiment of the present application provides a construction method for the precise centering of a bridge rotation to solve the problem in the related art that the axis centering process of a rotation bridge will change the actual elevation of the rotation bridge that has been adjusted.

[0005] In a first aspect, a construction method for precise centering of a bridge swivel is provided, which comprises: adjusting the elevation of the swivel bridge, and after the elevation adjustment is completed, providing a limit adjustment device on the annular surface of the support leg of the swivel bridge; the limit adjustment device is provided on the annular surface of the support leg of the swivel bridge, and comprises a perforated plate, a limit member and an adjustment member; the perforated plate is vertically provided 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 to the upper turntable, and the lower end is free from the lower turntable; the limit member passes through the perforated plate, and the bottom is slidably connected to the lower turntable; the adjustment member comprises a top adjustment nut and a bottom adjustment nut, the top adjustment nut is connected to the limit member and abuts against the top of the perforated plate, and the bottom adjustment nut is connected to the limit member and abuts against the bottom of the perforated plate.

[0006] In some embodiments, the elevation of the rotating bridge is adjusted, which includes the following steps: obtaining a first difference between the current elevation of the rotating bridge and the target elevation; calculating the elevation adjustment value of the support leg based on the first difference, and then obtaining the target elevation value and the allowable difference of the support leg; continuously adjusting the elevation of the rotating bridge and obtaining the actual elevation value of the support leg after each adjustment, until the absolute value of the difference between the actual elevation value and the target elevation value is no greater than the allowable difference.

[0007] In some embodiments, the elevation adjustment value of the support leg of the rotating bridge is calculated according to the first difference, which includes the following steps: obtaining the rotating cantilever length L of the rotating bridge (8), recording the rotation 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, record the rotation arc of the support leg (5) as β, and record the elevation adjustment value as h, then h=Rβ;

[0009] Based on the fact that the rotation arc of the rotating bridge (8) is the same as the rotation arc of the supporting leg (5), that is, α=β, we have

[0010] In some embodiments, after the elevation adjustment of the rotating bridge is completed, a limit adjustment device is installed; the axis alignment of the rotating bridge is divided into multiple adjustments, and after each adjustment, the elevation of the rotating bridge is detected. 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 axis alignment 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, which includes the following steps: calculating the second difference between the current elevation of the rotating bridge and the target elevation; when the current elevation of the rotating bridge is greater than the target elevation, all the bottom adjusting nuts are simultaneously lowered by the second difference, and then all the top adjusting nuts are lowered until they are against the perforated plate; when the current elevation of the rotating bridge is less than the target elevation, all the top adjusting nuts are increased by the second difference, and then all the bottom adjusting nuts are simultaneously increased until the perforated plate is against the corresponding top adjusting nuts.

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

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

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

[0015] In some embodiments, scale lines are provided on the adjusting screw.

[0016] In some embodiments, each support leg is provided with a plurality of limit adjustment devices at equal intervals along its annular surface.

[0017] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0018] The present application proposes a construction method for the precise centering of a bridge rotation, wherein a limit adjustment device is arranged on the annular surface of the support leg, mainly comprising a perforated plate, a limit piece and an adjustment piece, and the adjustment piece comprises a top adjustment nut and a bottom adjustment nut; the perforated plate is arranged on the annular surface of the support leg, and the limit piece passes through the perforated plate, and further, the limit piece can be fixed to the perforated plate by means of the top adjustment nut and the bottom adjustment nut, that is, the limit piece is fixedly supported on the lower turntable, so that after the elevation adjustment of the rotating bridge is completed, it plays a supporting and fixing role, that is, when the axis of the rotating bridge is centered, the limit adjustment device can suppress the upward or downward force component generated, thereby preventing the already adjusted elevation from changing; and if a slight change occurs, the top adjustment nut and the bottom adjustment nut can be used for reasonable adjustment. First, the elevation of the rotating bridge is adjusted. After the adjustment is completed, a limit adjustment device is set on the annular surface of the support leg to support the lower turntable and the support leg at the same time, so that when the axis is aligned, the upward or downward force generated can be suppressed; and the process of axis alignment is divided into multiple adjustments. Each adjustment can reasonably adjust the limit adjustment device according to the change in elevation, so that the elevation of the rotating bridge is within the target design value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of the limit adjustment device provided in the embodiment of the present application;

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

[0021] Figure 3 A schematic diagram of the structure of the elevation adjustment of the rotating bridge provided in the embodiment of the present application;

[0022] Figure 4 A schematic diagram of the top view of the upper turntable provided in an embodiment of the present application;

[0023] Figure 5 A schematic flow chart of a construction method for precise centering of a rotating bridge provided in an embodiment of the present application.

[0024] In the figure: 1. limit adjustment device; 2. limit member; 21. adjustment screw; 22. roller; 3. adjustment member; 31. top adjustment nut; 32. bottom adjustment nut; 4. perforated plate; 5. support leg; 6. upper turntable; 7. lower turntable; 8. rotating bridge. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0027] In the first aspect, the present application provides a construction method for accurate centering of a bridge rotation, referring to Figure 1-4 , Figure 1 A construction method for accurate centering of a bridge swivel, comprising:

[0028] S1. Adjust the elevation of the rotating bridge 8. After the elevation adjustment is completed, a limit adjustment device 1 is set on the annular surface of the support leg 5 of the rotating bridge 8; the limit adjustment device 1 is set on the annular surface of the support leg 5 of the rotating bridge 8, and includes a perforated plate 4, a limit member 2 and an adjustment member 3; the perforated plate 4 is vertically set on the annular surface of the support leg 5, and the support leg 5 is located between the upper turntable 6 and the lower turntable 7 of the bridge rotation body, the upper end of the support leg 5 is fixedly connected to the upper turntable 6, and the lower end is vacant with the lower turntable 7; the limit member 2 penetrates the perforated plate 4, and the bottom is slidably connected to the lower turntable 7; the adjustment member 3 includes a top adjustment nut 31 and a bottom adjustment nut 32, the top adjustment nut 31 is connected to the limit member 2 and abuts against the top of the perforated plate 4, and the bottom adjustment nut 32 is connected to the limit member 2 and abuts against the bottom of the perforated plate 4.

[0029] In this embodiment, the elevation of the rotating bridge 8 is adjusted first. 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, so that when the axis is aligned, the upward or downward force generated can be suppressed; and the process of axis alignment is divided into multiple adjustments, and each adjustment can reasonably adjust the limit adjustment device 1 according to the change in elevation, so that the elevation of the rotating bridge 8 is within the target design value; by setting the limit adjustment device 1 on the annular surface of the support leg, which includes a perforated plate 4, a limit member 2 and an adjustment member 3, and the adjustment member 3 includes a top adjustment nut 31 and a bottom adjustment nut 32; the perforated plate 4 is set on the annular surface of the support leg 5. The limit member 2 passes through the perforated plate 4. Furthermore, the limit 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 limit member 2 is fixedly supported on the lower turntable 7, so that 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 centered, the limit adjustment device 1 can suppress the upward or downward force generated, thereby preventing the elevation that has been adjusted from changing; and if a slight change occurs, the top adjusting nut 31 and the bottom adjusting nut 32 can be used for reasonable adjustment, thereby solving the problem in the prior art that the axis centering process of the rotating bridge will change the actual elevation of the rotating bridge that has been adjusted.

[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 , the roller 22 is fixedly connected to the bottom of the adjusting screw 21 and is rollingly connected to the lower turntable 7 .

[0031] In this embodiment, the adjusting screw 21 passes through the perforated plate 4, and the bottom of the adjusting screw 21 is fixedly connected with a roller 22, wherein the roller 22 is rollingly connected to the lower turntable 7, that is, the arrangement has two effects. On the first hand, the connection between the adjusting screw 21 and the roller 22 can support and fix the support leg 5 to the lower turntable 7. On the second hand, the design of the roller 22 can limit the elevation of the rotating bridge 8 to remain unchanged, while allowing the upper turntable 6 to roll smoothly on the lower turntable 7 during the subsequent axis alignment. The design of the roller 22 allows smooth adjustment during the axis alignment process, reduces friction resistance, and thus improves the flexibility of adjustment.

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

[0033] In this embodiment, the angle measuring device is used to obtain the rotation angle of the top adjustment nut 31 and the bottom adjustment nut 32 in real time, provide instant data feedback, and use high-precision sensors to ensure that the obtained angle data is accurate, which helps the operator to make necessary fine adjustments during adjustment; real-time angle feedback enables the operator to better grasp the progress and results of the adjustment during the adjustment process, thereby improving the accuracy of the overall 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 angle scale lines.

[0035] In this embodiment, the marked value of the engraved degree is determined according to the size of the top adjusting nut 31, the bottom adjusting nut 32 and the adjusting screw 21 in actual construction, that is, the larger the size, the finer the marked value is designed; the clearly visible angular scale lines facilitate direct visual inspection during the adjustment process. Through the angular scale lines, the operator no longer needs to rely on additional tools or equipment when adjusting, and can directly judge the progress and status of the adjustment through the scale lines. The angular scale lines provide a visual angle reference to help the operator ensure that the desired angular position is reached when turning the nut, thereby improving the accuracy of the alignment.

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

[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 clear scale lines are evenly distributed on the surface of the adjusting screw 21. These scale lines can be made of obvious colors or materials to ensure that they can be clearly identified under different lighting conditions. The operator can judge the adjustment position by the scale lines, thereby accurately controlling the amplitude of the elevation adjustment.

[0038] Furthermore, in one embodiment, each support leg 5 is provided with a plurality of limit adjustment devices 1 at equal intervals along its annular surface.

[0039] In this embodiment, a plurality of limit adjustment devices 1 are provided on the annular surface of each support leg 5, and these devices are evenly spaced. This design can ensure that each direction can obtain more balanced and stable support during the bridge rotation process; the evenly spaced layout helps to reduce the uneven load applied to the support leg 5, thereby improving the safety of construction. Each limit adjustment device 1 works independently, and the operator can adjust each device at any time according to actual needs. This flexibility makes fine adjustment possible, further improving the accuracy of elevation adjustment.

[0040] refer to Figure 5 , Figure 5 A schematic diagram of a construction method for accurate centering of a rotating bridge provided in an embodiment of the present application;

[0041] S2. After the elevation adjustment of the rotating bridge 8 is completed, the limit adjustment device 1 is installed; the axis alignment of the rotating bridge 8 is divided into multiple adjustments. After each adjustment, the elevation of the rotating bridge 8 is detected. 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 axis alignment is continued.

[0042] In this construction method, the elevation of the rotating bridge 8 is adjusted first. After the adjustment is completed, a limit adjustment device 1 is set on the annular surface of the support leg 5 to support the lower turntable 7 and the support leg 5 at the same time, so that when the axis is aligned, the upward or downward force generated can be suppressed; and the process of axis alignment is divided into multiple adjustments. Each adjustment can reasonably adjust the limit adjustment device according to the change in elevation, so that the elevation of the rotating bridge 8 is within the target design value.

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

[0044] S11. Obtain a first difference between the current elevation of the rotating bridge 8 and the target elevation; calculate the elevation adjustment value of the support leg 5 based on the first difference, and then obtain the target elevation value and the 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, an elevation measurement device (such as a level, a laser level, etc.) is used to accurately measure the current elevation of the rotating bridge 8, and the current elevation value is subtracted from the preset target elevation to obtain a first difference; based on the first difference, the target elevation value of the support leg 5 can be obtained according to the same rotation angle, and then the adjusted allowable difference is obtained according to the actual construction requirements; based on the calculated target elevation value, the support leg 5 is continuously adjusted using a vertical jack, and after each adjustment, the actual elevation value of the support leg 5 is obtained using a measuring device, and the difference between the actual elevation value and the target elevation value is calculated. If the absolute value of the above difference is less than or equal to the allowable difference, it means that the elevation adjustment has met the requirements and the adjustment process is completed. If the absolute value of the difference is greater than the allowable difference, the adjustment continues. Through systematic steps and precise calculations, each elevation adjustment is ensured to have a high degree of accuracy.

[0046] Further, in one embodiment, according to the first difference, the elevation adjustment value of the support leg of the rotating bridge is calculated, which includes the following steps:

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

[0048] S112, based on the fact that the rotation arc of the rotating bridge 8 is the same as the rotation arc of the supporting leg 5, that is, α=β, then

[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, a fixed point on the support leg 5 can be selected as the measuring point, that is, the distance between the fixed point and the end of the rotating bridge 8 is regarded as the rotating 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 of the rotating bridge 8 and the target elevation can be converted into a target elevation value h of the support leg 5 for easy adjustment and inspection.

[0050] Further, 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 of the rotating bridge 8 and the target elevation; when the current elevation of the rotating bridge 8 is greater than the target elevation, simultaneously adjust all the bottom adjusting nuts 32 downward by the second difference, and then adjust all the top adjusting nuts 31 downward to abut against the perforated plate 4; when the current elevation of the rotating bridge 8 is less than the target elevation, adjust all the top adjusting nuts 31 upward by the second difference, and then simultaneously adjust all the bottom adjusting nuts 32 upward to abut against the perforated plate 4 and the corresponding top adjusting nuts 31.

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

[0053] The method of this embodiment is further explained below in conjunction with specific data:

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

[0055] At this time, the elevation of the rotating bridge can be adjusted, that is, S11 is performed, wherein the allowable difference is known to be 0.001m. After the elevation is adjusted using the vertical jack, the difference between the actual elevation value and the target elevation value is 0.0005m, and the first difference between the current elevation of the rotating bridge 8 and the target elevation is 0.001m, and the target design range should be within 0.003m, that is, at this time, the first difference is within the target design range;

[0056] Next, two limit adjustment devices 1 are installed at equal intervals on the annular surface of each support leg 5, and of course three or four are also acceptable. After installation, the axis can be aligned. When the axis is aligned, the first difference between the current elevation of the rotating bridge 8 and the target elevation is detected. If it is correct, continue to adjust. After the axis is aligned, it is found that the first difference between the current elevation of the rotating bridge 8 and the target elevation is 0.012m. At this time, the limit adjustment device 1 needs to be adjusted. First, the relationship between the rotation angle and the 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 circle a=360°, the vertical displacement distance b of the top adjusting nut 31, the bottom adjusting nut 32, the perforated plate 4 and the rotating bridge 8 1 is 0.005m, based on the same unit displacement distance of the rotating bridge 8 for every 1° rotation, and the vertical displacement distance b currently required to be adjusted is 2 is 0.012m, then the required rotation degree of the top adjusting nut 31 and the bottom adjusting nut 32 is It can be decomposed into 2 circles of 144°, that is, the top adjusting nut 31 and the bottom adjusting nut 32 are rotated 2 circles of 144°.

[0057] The method monitors the difference between the current elevation and the target elevation in real time, and reasonably adjusts the nuts of the limit adjustment device 1 to ensure that the elevation of the rotating bridge 8 meets the design requirements.

[0058] The beneficial effects brought by the present invention include:

[0059] The present application provides a construction method for precise centering of a bridge swivel, which includes a perforated plate 4, a limiter 2 and an adjusting member 3, and the adjusting member 3 includes a top adjusting nut 31 and a bottom adjusting nut 32; the perforated plate 4 is arranged on the annular surface of the support leg 5, and the limiter 2 passes through the perforated plate 4. Furthermore, the limiter 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 limiter 2 is fixedly supported on the lower turntable 7, so that after the elevation adjustment of the swivel bridge 8 is completed, it plays a supporting and fixing role, that is, when the axis of the swivel bridge 8 is centered, the limiter adjustment device 1 can suppress the upward or downward force component generated, thereby preventing the already adjusted elevation from changing. and if slight changes occur, the top adjusting nut 31 and the bottom adjusting nut 32 can be used for reasonable adjustment, thereby solving the problem in the prior art that the axis centering process of the swivel bridge will change the actual elevation of the swivel bridge that has been adjusted; first, the elevation of the swivel bridge 8 is adjusted, and after the adjustment is completed, a limit adjustment device 1 is set on the annular surface of the support leg 5, which plays a role in simultaneously supporting the lower turntable 7 and the support leg 5, so that when the axis is centered, the upward or downward force generated can be suppressed; and the axis centering process is divided into multiple adjustments, and each adjustment can reasonably adjust the limit adjustment device according to the change in elevation, so that the elevation of the swivel bridge 8 is within the target design value.

[0060] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0061] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.

[0062] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.

[0063] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; the “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0064] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the 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 in sequence or in parallel, and these operations or steps may be combined.

[0065] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.

[0066] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A construction method for accurate centering of a bridge swivel, characterized in that: It includes: The elevation of the rotating bridge (8) is adjusted. After the elevation adjustment is completed, a limit adjustment device (1) is arranged on the annular surface of the support leg (5) of the rotating bridge (8); The limit adjustment device (1) is arranged on the annular surface of the support leg (5) of the rotating bridge (8), and includes a perforated plate (4), a limit member (2) and an adjustment member (3); the perforated plate (4) is vertically arranged 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 rotating body, the upper end of the support leg (5) is fixedly connected to the upper turntable (6), and the lower end is free from the lower turntable (7); the limit member (2) passes through the perforated plate (4), and the bottom is slidably connected to the lower turntable (7); the adjustment member (3) includes a top adjustment nut (31) and a bottom adjustment nut (32), the top adjustment nut (31) is connected to the limit member (2) and abuts against the top of the perforated plate (4), and the bottom adjustment nut (32) is connected to the limit member (2) and abuts against the bottom of the perforated plate (4).

2. The construction method for accurate centering of a bridge swivel according to claim 1, characterized in that: The elevation of the rotating bridge (8) is adjusted, which comprises the following steps: Obtaining a first difference between a current elevation and a target elevation of the rotating bridge (8); Calculating the elevation adjustment value of the support leg (5) according to the first difference, thereby obtaining the target elevation value and the allowable difference of the support leg (5); The elevation of the rotating bridge (8) is continuously adjusted and the actual elevation value of the support leg (5) after each adjustment is obtained until the absolute value of the difference between the actual elevation value and the target elevation value is no greater than the allowable difference.

3. The construction method for accurate centering of a bridge swivel according to claim 2, characterized in that: According to the first difference, the elevation adjustment value of the support leg of the rotating bridge is calculated, which includes the following steps: Obtain the rotation cantilever length L of the rotating bridge (8), denote the rotation arc of the rotating bridge (8) as α, and denote the first difference as H, then H=Lα; Obtain the rotation radius R of the support leg (5) corresponding to the length of the rotating cantilever, record the rotation arc of the support leg (5) as β, and record the elevation adjustment value as h, then h=Rβ; Based on the fact that the rotation arc of the rotating bridge (8) is the same as the rotation arc of the supporting leg (5), that is, α=β, we have 4. The construction method for accurate centering of a bridge swivel according to claim 1, characterized in that: After the elevation adjustment of the rotating bridge (8) is completed, the limit adjustment device (1) is installed; The axis alignment of the rotating bridge (8) is divided into multiple adjustments. After each adjustment, the elevation of the rotating bridge (8) is detected. 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 axis alignment is continued.

5. The construction method for accurate centering of a bridge swivel according to claim 4, characterized in that: 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: Calculating a 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, all the bottom adjusting nuts (32) are simultaneously adjusted downward by the second difference, and then all the top adjusting nuts (31) are adjusted downward until they abut against the perforated plate (4); When the current elevation of the rotating bridge (8) is less than the target elevation, all the top adjusting nuts (31) are adjusted upward by the second difference, and simultaneously all the bottom adjusting nuts (32) are adjusted upward until the perforated plate (4) is in contact with the corresponding top adjusting nuts (31).

6. The construction method for accurate centering of a bridge rotation according to claim 1, characterized in that: The limiting member (2) comprises an adjusting screw (21) and a roller (22), wherein 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 rollingly connected to the lower rotating disk (7).

7. The construction method for accurate centering of a bridge rotation according to claim 6, characterized in that: The adjusting member (3) further comprises an angle measuring device for obtaining the rotation angles of the top adjusting nut (31) and the bottom adjusting nut (32).

8. The construction method for accurate centering of a bridge rotation according to claim 6, characterized in that: The top adjusting nut (31) and the bottom adjusting nut (32) are both provided with angular scale lines.

9. The construction method for accurate centering of a bridge rotation according to claim 6, characterized in that: The adjusting screw (21) is provided with scale lines.

10. The construction method for accurate centering of a bridge rotation according to claim 1, characterized in that: Each of the supporting legs (5) is provided with a plurality of the limit adjustment devices (1) at equal intervals along its annular surface.

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