Large-diameter cylinder structure assembling and roundness measuring device

Abstract

The utility model provides an assembling and roundness measuring device for a large-diameter cylinder structure. The device comprises a middle column, a rotating mechanism, a measuring cantilever and a hoisting cantilever, the rotating mechanism is rotationally connected to the middle column and comprises a rotating support, a rotating outer sleeve and a driving device. The measuring cantilever and the hoisting cantilever are oppositely arranged on the rotating outer sleeve, the hoisting cantilever is movably provided with a hoisting mechanism, the measuring cantilever is movably provided with an elevation distance measuring device and a radius distance measuring device, and the elevation distance measuring device comprises a first slide way, an electric trolley and a first laser distance measuring instrument; the radius distance measuring device comprises a sliding stand column, a sliding sleeve and a second laser distance measuring instrument. The measuring cantilever and the hoisting cantilever are connected through a reinforcing truss. According to the utility model, the assembling efficiency of the cylinder structure is improved, and the hoisting and measuring precision is ensured; through mechanical operation, the operation difficulty is reduced; the whole device is made of common materials and can be recycled; and the construction method is simple and convenient to operate, scientific, reasonable and wide in application range.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial installation, and in particular relates to a large-diameter cylinder structure assembly and roundness measurement device. Background Art

[0002] In the metallurgical and petrochemical fields, various towers, storage tanks and other equipment are common. They are important equipment for storing and replacing liquids and gas production and processing. Such equipment has common characteristics - large diameter, high height, high pressure, storage of toxic and harmful media, and are made of several pieces of steel plates processed into arcs to form a ring belt spliced ​​together, and then several ring belts are stacked and assembled from bottom to top to form a large storage tank and tower body.

[0003] Since the processed curvature of the steel plate often cannot completely match the design curvature of the equipment, there is a certain deviation, which leads to the deviation of the overall diameter roundness after the steel plates are assembled together, making it impossible to install other structures inside the equipment; at the same time, it will also cause problems such as poor sealing and easy leakage, which will bring hidden dangers to safe production. Therefore, the installation accuracy of the steel plate is extremely high. In addition, a single steel plate is large in size and heavy in weight, and it cannot be moved and transported manually, which brings difficulties to production and assembly. Even with the help of some tools, there are still disadvantages such as cumbersome operation, heavy workload, low assembly accuracy, and long assembly cycle. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a large-diameter cylindrical structure assembly and roundness measurement device, which improves the assembly efficiency of the cylindrical structure and ensures the lifting and measurement accuracy; through mechanized operation, the operation difficulty is reduced; the structural connection is stable, the construction method is simple to operate, scientific and reasonable, and has a wide range of applications.

[0005] The technical solution adopted by the utility model is: a large-diameter cylindrical structure assembly and roundness measurement device, including a center column, a rotating mechanism, a measuring cantilever and a hanging cantilever;

[0006] The bottom of the middle column is provided with a column bottom plate, which is used to connect with the cylindrical structure bottom plate to fix the middle column;

[0007] The rotating mechanism comprises a rotating outer sleeve rotatably connected to the center column, and the rotating outer sleeve is coaxially arranged with the center column;

[0008] The measuring cantilever and the lifting cantilever are relatively arranged on the rotating outer sleeve. The lifting cantilever is movably provided with a lifting mechanism for lifting the arc-shaped steel plate to assemble into the cylindrical structure; the measuring cantilever is movably provided with an elevation distance measuring device and a radius distance measuring device, which are respectively used to measure the flatness of the base plate and the roundness of the arc-shaped steel plate.

[0009] Further, the rotating mechanism includes a rotating support, a rotating outer sleeve and a driving device;

[0010] The rotating support is fixed to the central column and is provided with a rotating track circumferentially surrounding the central column;

[0011] The rotating outer sleeve is sleeved on the middle column, and comprises a first mounting seat arranged at the upper end of the main body, a second mounting seat arranged at the lower end of the main body, and a moving mechanism arranged at the bottom of the second mounting seat, and the moving mechanism is rollingly connected with the rotating track;

[0012] The driving device includes a first driving gear disposed on the first mounting seat, the driving gear is meshed with a first annular toothed belt on the inner wall of the center column, and is driven to rotate by a first servo motor to drive the rotating sleeve to rotate around the center column.

[0013] Furthermore, the driving device also includes a second driving gear arranged on the second mounting seat, the second driving gear is meshed with a second annular toothed belt arranged on the rotating support, and is driven to rotate by a second servo motor; the second annular toothed belt is arranged outside the rotating track.

[0014] Furthermore, the first mounting seat is also provided with at least two guide wheels, and the guide wheels abut against the inner wall of the center column.

[0015] Furthermore, the elevation ranging device includes a first slide, an electric trolley and a first laser rangefinder, wherein the first laser rangefinder is arranged on the electric trolley, and its laser emitting end faces the base plate; the electric trolley moves along the first slide to approach or move away from the center column.

[0016] Furthermore, the radius distance measuring device includes a sliding column, a sliding sleeve and a second laser distance meter articulated with the electric trolley; the second laser distance meter is arranged on the sliding sleeve, and when the sliding column is parallel to the column, its laser emitting end faces away from the middle column; the sliding sleeve is slidably connected to the sliding column.

[0017] Furthermore, an electric reel is provided at one end of the measuring cantilever close to the central column, and a steel wire rope is wound around the electric reel; one end of the steel wire rope is connected to the bottom of the sliding column to pull the sliding column up or down.

[0018] Furthermore, the hoisting mechanism includes a second slide and an electric hoist, and the electric hoist moves along the second slide to approach or move away from the center column.

[0019] Furthermore, it also includes a reinforcing truss, which connects the measuring cantilever and the hanging cantilever to form an integral structure.

[0020] The advantages and positive effects of the utility model are:

[0021] (1) Through the coordination of the hoisting mechanism, the elevation distance measuring device and the radius distance measuring device, the hoisting and measuring work can be carried out alternately and interspersed, which improves the assembly efficiency of the cylindrical structure and shortens the installation period;

[0022] (2) Through the cooperation between the rotating support, the rotating sleeve and the driving device, the rotating sleeve can rotate more smoothly around the center column, avoiding the deviation of the rotating mechanism during the rotation process, thus ensuring the lifting and measurement accuracy;

[0023] (3) The first servo motor and the second servo motor are used to drive the rotation of the rotating mechanism, and the driver is used to drive the movement of the electric trolley, the movement of the electric hoist and the lifting operation, so that all operations can be completed through mechanized operations, which reduces the operating difficulty of the operator and reduces the workload of the operator;

[0024] (4) The entire device is made of common materials and can be used in a cyclical manner, which improves the utilization rate of the entire device and reduces construction costs;

[0025] (5) The overall structure is firmly connected, and the construction method is simple, scientific and reasonable, which improves the efficiency and installation accuracy of the cylindrical structure assembly;

[0026] (6) The device and method can be applied to the installation of cylindrical structures of various diameters, and can also be applied to the installation of polygonal structures and annular structures, and have a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model;

[0028] Figure 2 It is a specific embodiment of the utility model Figure 1 A partial enlarged view of the middle part;

[0029] Figure 3 It is a specific embodiment of the utility model Figure 1 Partial enlargement and schematic diagram of point B in the middle;

[0030] Figure 4 It is a specific embodiment of the utility model Figure 1 A partial enlarged view of point C in the middle;

[0031] Figure 5 It is a specific embodiment of the utility model Figure 1 A partial enlarged view of point D in the middle;

[0032] Figure 6 It is a use schematic diagram of a specific embodiment of the utility model.

[0033] In the figure:

[0034] 10. Cylindrical structure 11. Bottom plate 111. Steel plate

[0035] 12. Arc steel plate 20, column base plate 30, middle column

[0036] 31, first annular toothed belt 40, rotating mechanism 41, rotating support

[0037] 411, rotating track 412, second annular toothed belt 42, rotating outer cover

[0038] 421, first mounting seat 421 422, second mounting seat 422 423, moving mechanism

[0039] 424, guide wheel 43, driving device 431, first driving gear

[0040] 432, first servo motor 433, second driving gear 434, second servo motor

[0041] 50. Measuring cantilever 51. Elevation distance measuring device 511. First slide

[0042] 512, electric trolley 513, first laser rangefinder 52, radius distance measuring device

[0043] 521, sliding column 522, sliding sleeve 523, second laser rangefinder

[0044] 524, electric reel 60, hoisting cantilever 61, hoisting mechanism

[0045] 611, second slide 612, electric hoist 70, reinforced truss

[0046] 80. Internal support DETAILED DESCRIPTION

[0047] The embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0048] First of all, it should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0049] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the utility model and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structure of various components of the embodiments of the utility model, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0050] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In addition, the descriptions of "first", "second", etc. in the application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0052] like Figure 1 As shown, the present application proposes a large-diameter cylindrical structure assembly and roundness measurement device, including a center column 30, a rotating mechanism 40, a measuring cantilever 50 and a hanging cantilever 60; wherein a column bottom plate 20 is provided at the bottom of the center column 30, which is used to connect with the bottom plate 11 of the cylindrical structure 10 to fix the center column 30; the rotating mechanism 40 includes a rotating outer sleeve 42 rotatably connected to the center column 30, and the rotating outer sleeve 42 is coaxially arranged with the center column 30 to realize the rotating mechanism 40 to rotate around the center column 30 The measuring cantilever 50 and the lifting cantilever 60 are relatively arranged on the rotating outer sleeve 42, and extend in the direction away from the central column 30; the lifting cantilever 60 is movably provided with a lifting mechanism 61 for lifting the arc-shaped steel plate 12 to assemble into a cylindrical structure 10; the measuring cantilever 50 is movably provided with an elevation distance measuring device 51 and a radius distance measuring device 52, which are respectively used to measure the flatness of the bottom plate 11 and the roundness of the arc-shaped steel plate 12, so as to meet the design requirements and ensure the assembly effect of the cylindrical structure 10.

[0053] In a specific embodiment, Figure 4As shown, the present application proposes a specific structure that can realize the rotational movement of the rotating mechanism 40 around the central column 30: the rotating mechanism 40 includes a rotating support 41, a rotating sleeve 42 and a driving device 43; wherein the rotating support 41 is fixed to the central column 30, and is provided with a rotating track 411 circumferentially surrounding the central column 30. Specifically, the rotating support 41 is circumferentially arranged on the central column 30 and has a mounting plane perpendicular to the central column 30, and the rotating track 411 is arranged on the upper surface of the mounting plane; the rotating sleeve 42 is sleeved on the central column 30, including a first mounting seat 421 arranged at the upper end of its main body, a second mounting seat 422 arranged at the lower end of the main body, and a moving mechanism 423 arranged at the bottom of the second mounting seat 422; wherein the main body of the rotating sleeve 42 has a through hole that matches the outer diameter of the central column 30. It can be understood that the diameter of the through hole should be slightly larger than the outer diameter of the central column 30 and should not contact the outer wall of the central column 30 to avoid excessive friction between the rotating sleeve 42 and the outer wall of the central column 30. The movable mechanism 423 is connected with the rotating track 411 in a rolling manner, and the rotating track 41 provides sufficient support for the rotating sleeve 42 through the movable mechanism 423, so as to fix the rotating sleeve 42 on the rotating support 41, and the movable mechanism 423 can assist the rotating sleeve 42 in rotating motion; therefore, at least three sets of movable mechanisms 423 should be arranged, and they should be evenly arranged at the bottom of the second mounting seat 422; the driving device 43 includes a first driving gear 431 arranged on the first mounting seat 421, and the driving gear is meshed with the first annular toothed belt 31 on the inner wall of the middle column 30, and is driven to rotate by the first servo motor 432 to drive the rotating sleeve to rotate around the middle column 30 and make the movable mechanism 423 roll.

[0054] Specifically, in this embodiment, the first mounting seat 421 and the second mounting seat 422 are both provided with mounting planes perpendicular to the center column 30. The moving mechanism 423 is installed at the lower part of the mounting plane of the second mounting seat 422, and four groups are evenly arranged. Each group of the moving mechanism 423 includes a load-bearing wheel, a wheel axle and a wheel seat. The wheel axle is installed along the radial direction of the center column 30 so that the load-bearing wheel can roll along the circumference of the center column 30, that is, roll along the rotating track 411. The first servo motor 432 is installed on the mounting plane of the first mounting seat 421, and its rotating axis is arranged in the vertical direction. It extends toward the inner side of the center column 30, and its output end is connected to the first driving gear 431, so that the first driving gear 431 is meshed with the first annular toothed belt 31 on the inner wall of the center column 30. When the first servo motor 432 drives the first driving gear 431 to rotate, it drives the rotating sleeve 42 to rotate around the center column 30, and at the same time drives the moving mechanism 423 to roll along the rotating track 411, so that the rotating sleeve 42 as a whole can rotate more smoothly around the center column 30, thereby driving the measuring cantilever 50 and the lifting cantilever 60 connected to the rotating sleeve 42 to rotate to the required position.

[0055] Furthermore, in order to make the rotational movement of the rotating sleeve 42 smoother, the first servo motor 432 and the first driving gear 431 each include at least two, which are evenly arranged on the first mounting seat 421. At least two first servo motors 432 synchronously drive at least two first driving gears 431 to rotate, so that the rotating sleeve 42 is subjected to uniform circumferential force and is not easily offset to one side.

[0056] In a preferred embodiment, Figure 4 As shown, the driving device 43 also includes a second driving gear 433 arranged on the second mounting seat 422, and the second driving gear 433 is meshed with the second annular toothed belt 412 arranged on the rotating support 41, and is driven to rotate by the second servo motor 434; the second annular toothed belt 412 is arranged on the outer side of the rotating track 411, and is concentrically arranged on the mounting plane of the second mounting seat 422 with the rotating track 411. It can be understood that the second servo motor 434 cooperates with the first servo motor 432 to rotate synchronously. When the second servo motor 434 drives the second driving gear 433 to rotate, it cooperates with the first driving gear 431 to jointly drive the rotating outer sleeve 42 to rotate. The upper and lower parts of the rotating outer sleeve 42 rotate synchronously under the drive of the first driving gear 431 and the second driving gear 433 respectively. On the one hand, the rotation of the rotating outer sleeve 42 is more stable. On the other hand, the second servo motor 434 and the second driving gear 433 provide a stronger driving force for the overall device to meet the rotation requirements of the hoisting cantilever 60 after hoisting heavy objects.

[0057] In a specific embodiment, Figure 4As shown, in order to realize the coaxial rotation of the rotating sleeve 42 around the center column 30, the first mounting seat 421 is further provided with at least two guide wheels 424, and the guide wheels 424 abut against the inner wall of the center column 30. Specifically, the first mounting seat 421 is provided with a mounting bracket, and the mounting bracket extends toward the cross-sectional center of the center column 30, so that the guide wheels 424 are close to the inner wall. This design allows the inner and outer sides of the center column 30 to be limited by the rotating sleeve 42 and the guide wheels 424, respectively, further preventing the rotating sleeve 42 from deviating to one side during the rotation process; preferably, multiple groups of limiting wheels are provided, which are dispersedly arranged on the second mounting seat 422, so as to limit the center column 30 at different positions along the circumferential direction.

[0058] In a specific embodiment, Figure 1 , Figure 3 As shown, the present application proposes a specific structure of an elevation ranging device 51: the elevation ranging device 51 includes a first slide 511, an electric trolley 512 and a first laser rangefinder 513, the first slide 511 is arranged along the length direction of the measuring cantilever 50, the first laser rangefinder 513 is arranged on the electric trolley 512, and its laser emitting end faces the base plate 11; the electric trolley 512 moves along the first slide 511 to approach or move away from the center column 30.

[0059] Specifically, the first slideway 511 is symmetrically arranged on the two side end surfaces of the measuring cantilever 50, and the electric trolley 512 includes a body, rollers located on both sides of the body, and a driver. The distance between the rollers on both sides is the same as the distance between the two first slideways 511, and the rollers on both sides are respectively fitted with the upper surface of the first slideway 511, so that the body is suspended on the measuring cantilever 50. Driven by the driver, the rollers roll along the first slideway 511, so that the electric trolley 512 moves along the length direction of the measuring cantilever 50 to approach or move away from the center column 30; the first laser rangefinder 513 is arranged on the bottom end surface of the trolley, and its laser emitting end faces the bottom plate 11, so that the direction of the laser after being emitted is parallel to the center column 30 and is emitted to the bottom plate 11; Figure 1As shown, the bottom plate 11 is made of a plurality of steel plates 111. When in use, the measuring cantilever 50 rotates around the center column 30 driven by the rotating mechanism 40, and the electric trolley 512 slides along the first slideway 511 to drive the first laser rangefinder 513 to approach or move away from the center column 30, so that the laser emitted by the first laser rangefinder 513 can be irradiated to any position of the bottom plate 11 within the coverage range after the measuring cantilever 50 rotates, so as to achieve accurate measurement of the flatness of the bottom plate 11. Specifically, when the first laser rangefinder 513 irradiates different bottom plates 11, the first laser rangefinder 513 can irradiate different bottom plates 11. 1, it means that the flatness of the bottom plate 11 meets the requirements; when the first laser rangefinder 513 irradiates a certain position of the bottom plate 11 and the displayed values ​​are different from those at other positions, it means that the bottom plate 11 at this position is not at the same height as the other bottom plates 11, that is, the flatness does not meet the requirements, and the elevation of the bottom plate 11 at this position needs to be adjusted until the elevations of all the bottom plates 11 are the same, and the values ​​measured by the first laser rangefinder 513 are all the same, thereby completing the measurement of the flatness of the bottom plate 11.

[0060] In a specific embodiment, Figure 1-Figure 3 As shown, the present application proposes a specific structure of a radius distance measuring device 52: the radius distance measuring device 52 comprises a sliding column 521, a sliding sleeve 522 and a second laser distance measuring device 523 which are hinged to the electric trolley 512; the second laser distance measuring device 523 is arranged on the sliding sleeve 522, and when the sliding column 521 is parallel to the column, its laser emitting end faces away from the middle column 30; the sliding sleeve 522 is slidably connected to the sliding column 521 and fixed by bolts; when in use, the sliding column 521 is parallel to the column, and the position of the second laser distance measuring device 523 located on the sliding column 521 is adjusted by the sliding sleeve 522 to achieve the adjustment of the height of the second laser distance measuring device 523; the purpose of this design is that the cylindrical structure 1 During installation, the installation is usually carried out layer by layer from bottom to top. The height of the second laser rangefinder 523 is adjusted to align it with the single-layer cylindrical structure 10 being installed, so as to measure its roundness. The sliding column 521 is hingedly connected to the electric trolley 512, so that one end of the sliding column 521 can be rotated to be close to the measuring cantilever 50, so as to achieve the effect of folding and stowing the sliding column 521, thereby preventing the sliding column 521 from colliding with other components inside the cylindrical structure 10 and affecting the rotation of the measuring cantilever 50. By rotating the measuring cantilever 50, the second laser rangefinder 523 can measure the roundness of a certain layer of the cylindrical structure 10 along the circumferential direction, thereby ensuring the convenience and accuracy of the measurement.

[0061] Specifically, the lower end surface of the electric trolley 512 is provided with a lifting ear and a pin shaft passing through the lifting ear, and the sliding column 521 is connected to the pin shaft to realize the articulation of the sliding column 521 and the electric trolley 512; at the same time, the sliding column 521 and the first laser rangefinder 513 are staggered to avoid interference with laser emission.

[0062] Preferably, if Figure 1 As shown, an electric reel 524 is provided at one end of the measuring cantilever 50 close to the middle column 30, and a steel wire rope is wound around the electric reel 524; one end of the steel wire rope is connected to the bottom of the sliding column 521 to pull the sliding column 521 up or down, so that the operation of folding and lowering the sliding column 521 can be realized more conveniently.

[0063] In a specific implementation, Figure 1 , Figure 5 As shown, the hoisting mechanism 61 includes a second slide 611 and an electric hoist 612. The electric hoist 612 moves along the second slide 611 to get closer to or away from the center column 30. When in use, the position of the electric hoist 612 on the second slide 611 is adjusted according to the radius of the cylindrical structure 10. The arc-shaped steel plate 12 is hoisted by the electric hoist 612 and placed at the intended installation position to realize the hoisting and installation of the arc-shaped steel plate 12. The electric hoist 612 is mainly used to hoist the steel plate 111. Its specific structure is not described here, and it can be any device with a hoisting function. The electric hoist 612 moves along the second slide 611 to realize the hoisting and installation of cylindrical structures 10 with different diameters, thereby expanding the scope of use of the device.

[0064] In this embodiment, if Figure 1 , Figure 3 As shown, the measuring cantilever 50 and the hanging cantilever 60 are both connected between the first mounting seat 421 and the second mounting seat 422 of the rotating mechanism 40, the upper end surfaces of the two are respectively welded to the lower surface of the first mounting seat 421, the lower end surfaces of the two are respectively welded to the upper surface of the second mounting seat 422, and one side of the two is respectively connected to the rotating sleeve 42. This design enables the measuring cantilever 50, the hanging cantilever 60 to be firmly connected to the rotating mechanism 40 to form an integral structure, thereby enhancing the rigidity of the overall structure.

[0065] In a specific embodiment, Figure 1 As shown, the device further includes a reinforcing truss 70, which connects the measuring cantilever 50 and the hanging cantilever 60 to form an integral structure, thereby further improving the rigidity and anti-deformation performance of the overall structure.

[0066] In a specific embodiment, a reinforcing steel plate 111 is disposed between the first mounting seat 421 and the second mounting seat 422 to further enhance the rigidity of the two.

[0067] In this embodiment, the electric trolley 512, the electric reel 524, the electric hoist 612, the first servo motor 432 and the second servo motor 434 are all turned on and off by the controller, making the overall operation more convenient; the center column 30 and the rotating mechanism 40 are made of steel pipes, the measuring cantilever 50 and the lifting cantilever 60 are made of steel sections, and the elevation distance measuring device 51 and the radius distance measuring device 52 are both made of steel plates 111, steel pipes and other materials commonly found on construction sites. They are simple to make and save materials. Compared with the use of large-scale lifting equipment in conjunction with measuring equipment for assembly, the construction cost is reduced.

[0068] In a specific embodiment, a method for assembling and measuring the roundness of a large-diameter cylindrical structure using a large-diameter cylindrical structure assembly and roundness measurement device proposed in the present application includes the following steps:

[0069] S1. Basic acceptance;

[0070] Ensure that the coordinate position and plane dimensions of the large-diameter cylindrical structure foundation meet the design requirements;

[0071] S2, assembling the base plate 11;

[0072] Assemble multiple steel plates 111 according to the layout diagram and weld them together to form the bottom plate 11; specifically, each steel plate 111 is spot welded to the seam of the adjacent steel plate 111 to form the overall bottom plate 11;

[0073] S3, installing the center column 30, the measuring cantilever 50, the hoisting cantilever 60, the rotating mechanism 40 and the strengthening truss 70;

[0074] Install the center column 30 at the center of the bottom plate 11. Specifically, the column bottom plate 20 of the bottom plate 11 of the center column 30 is fixedly connected to the bottom plate 11;

[0075] Then check the verticality of the center column 30;

[0076] After confirming that the center column 30 is vertical, install the rotating mechanism 40 on the center column 30, symmetrically install the measuring cantilever 50 and the hanging cantilever 60 on the rotating mechanism 40, and install the reinforcing truss 70 on the measuring cantilever 50 and the hanging cantilever 60;

[0077] The measuring cantilever 50 and the hanging cantilever 60 are welded to the rotating mechanism 40; the reinforcing truss 70 is welded to the upper ends of the measuring cantilever 50 and the hanging cantilever 60, connecting the measuring cantilever 50 and the hanging cantilever 60 into an integral structure;

[0078] S4, measuring the flatness of the bottom plate 11;

[0079] The first laser rangefinder 513 is turned on to irradiate a certain steel plate 111 with laser light to read its elevation value; the electric trolley 512 is moved, and the rotating mechanism 40 is started to cooperate with the electric trolley 512 to read the elevation value of each steel plate 111 one by one, and the elevation values ​​of all steel plates 111 are adjusted to be consistent and meet the design requirements;

[0080] S5, positioning the installation position of the cylindrical structure 10;

[0081] According to the design radius of the cylindrical structure 10, the electric trolley 512 is moved again, and the first laser rangefinder 513 is turned on, so that the position when the laser is irradiated on the bottom plate 11 is the intended installation position of the cylindrical structure 10; then the rotating mechanism 40 is started to mark the laser movement path of the first laser rangefinder 513 on the bottom plate 11; the mark can be a continuous mark or an intermittent mark, and the mark around the central column 30 provides a reliable basis for the installation positioning of the arc steel plate 12.

[0082] S6, installing the curved steel plate 12;

[0083] Start the rotating mechanism 40 and the electric hoist 612, lift the arc-shaped steel plates 12 one by one and place them at the marked positions of the bottom plate 11, spot weld adjacent arc-shaped steel plates 12 so that they are connected end to end to form a single-layer cylindrical structure 10; the arc-shaped steel plates 12 are placed vertically on the bottom plate 11, and adjacent arc-shaped steel plates 12 are spot welded to each other, so that the arc-shaped steel plates 12 can move relative to each other in a small range without being disconnected, which is convenient for adjusting the arc-shaped steel plates 12 in subsequent steps.

[0084] S7, measure the 10 degree roundness of a single-layer cylindrical structure;

[0085] Start the electric reel 524 to lower the sliding column 521, move the sliding sleeve 522 to align the second laser rangefinder 523 with the middle of the height direction of the curved steel plate 12, start the second laser rangefinder 523 and the rotating mechanism 40, measure the roundness of each curved steel plate 12 one by one, adjust the curved steel plate 12 according to the measured value to meet the design requirements, and then make the overall roundness of the single-layer cylindrical structure 10 meet the design requirements;

[0086] Specifically, adjusting the arc-shaped steel plate 12 includes adjusting the installation position of the arc-shaped steel plate 12 by means of tools such as a fall chain and a jack, and making corrections by observing whether the bottom of the arc-shaped steel plate 12 coincides with the mark on the floor. When the second laser rangefinder 523 rotates and illuminates different arc-shaped steel plates 12 driven by the measuring cantilever 50, if the measured values ​​are consistent, it indicates that the installation position of the arc-shaped steel plate 12 is accurate and meets the design requirements.

[0087] In this embodiment, in order to facilitate the adjustment of the installation position of the curved steel plate 12, the electric trolley 512 is first moved so that the value when the second laser rangefinder 523 irradiates a certain curved steel plate 12 that has been positioned is an integer, and other curved steel plates 12 are measured based on this, which is more convenient for recording and adjusting the curved steel plate 12.

[0088] S8, erecting internal support 80;

[0089] Start the electric reel 524 to pull up the sliding column 521, and set up an inner support 80 between the single-layer cylindrical structure 10 and the middle column 30; specifically, the inner support 80 is arranged at equal intervals along the circumference of the middle column 30, and is welded to the arc-shaped steel plate 12 and the middle column 30. On the one hand, it provides support for the single-layer cylindrical structure 10 to prevent its roundness from changing during the subsequent construction process; on the other hand, it can further ensure the stability of the middle column 30 to prevent it from overturning; at the same time, an operating platform is set up based on the inner support 80, which provides convenience for subsequent construction.

[0090] S9, installing a single-layer cylindrical structure 10;

[0091] Repeat step S6, install the arc-shaped steel plates 12 one by one on the upper part of the installed single-layer cylindrical structure 10 and connect them by spot welding; the upper and lower layers of arc-shaped steel plates 12 are staggered and connected by spot welding to ensure that the arc-shaped steel plates 12 of the upper layer of the single-layer cylindrical structure 10 will not break during the adjustment process; repeat the step of measuring the roundness of the single-layer cylindrical structure in S7 and the step of setting up the inner support in S7;

[0092] S10, repeat the previous step to install the single-layer cylindrical structure 10 layer by layer, complete the preliminary assembly of the overall cylindrical structure 10, and then fully weld all the welds to complete the assembly of the overall cylindrical structure 10;

[0093] S11 , dismantling the reinforcing truss 70 , the measuring cantilever 50 , the hoisting cantilever 60 , the rotating mechanism 40 , the inner support 80 and the center column 30 .

[0094] It should be noted that the method for assembling and measuring the roundness of a large-diameter cylindrical structure 10 proposed in the present application is not only applicable to the assembly of a large-diameter cylindrical structure 10, but can also be used for polygonal towers, silo equipment, and pipes and boxes with circular structures that need to be assembled, as long as the assembled devices or equipment have technical features such as regular shape and symmetry.

[0095] The advantages and positive effects of the utility model are:

[0096] (1) Through the coordination of the hoisting mechanism, the elevation distance measuring device and the radius distance measuring device, the hoisting and measuring work can be carried out alternately and interspersed, which improves the assembly efficiency of the cylindrical structure and shortens the installation period;

[0097] (2) Through the cooperation between the rotating support, the rotating sleeve and the driving device, the rotating sleeve can rotate more smoothly around the center column, avoiding the deviation of the rotating mechanism during the rotation process, thus ensuring the lifting and measurement accuracy;

[0098] (3) The first servo motor and the second servo motor are used to drive the rotation of the rotating mechanism, and the driver is used to drive the movement of the electric trolley, the movement of the electric hoist and the lifting operation, so that all operations can be completed through mechanized operations, which reduces the operating difficulty of the operator and reduces the workload of the operator;

[0099] (4) The entire device is made of common materials and can be reused, which improves the utilization rate of the entire device and reduces construction costs;

[0100] (5) The overall structure is firmly connected, and the construction method is simple, scientific and reasonable, which improves the efficiency and installation accuracy of the cylindrical structure assembly;

[0101] (6) The device and method can be applied to the installation of cylindrical structures of various diameters, and can also be applied to the installation of polygonal structures and annular structures, and have a wide range of applications.

[0102] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A large diameter cylindrical structure assembly and roundness measurement device, characterized in that: It includes a center column, a rotating mechanism, a measuring cantilever and a lifting cantilever; The bottom of the middle column is provided with a column bottom plate, which is used to connect with the cylindrical structure bottom plate to fix the middle column; The rotating mechanism comprises a rotating outer sleeve rotatably connected to the center column, and the rotating outer sleeve is coaxially arranged with the center column; The measuring cantilever and the lifting cantilever are relatively arranged on the rotating outer sleeve. The lifting cantilever is movably provided with a lifting mechanism for lifting the arc-shaped steel plate to assemble into the cylindrical structure; the measuring cantilever is movably provided with an elevation distance measuring device and a radius distance measuring device, which are respectively used to measure the flatness of the base plate and the roundness of the arc-shaped steel plate.

2. The large diameter cylindrical structure assembly and roundness measurement device according to claim 1, characterized in that: The rotating mechanism comprises a rotating support, a rotating outer sleeve and a driving device; The rotating support is fixed to the central column and is provided with a rotating track circumferentially surrounding the central column; The rotating outer sleeve is sleeved on the middle column, and comprises a first mounting seat arranged at the upper end of the main body, a second mounting seat arranged at the lower end of the main body, and a moving mechanism arranged at the bottom of the second mounting seat, and the moving mechanism is rollingly connected with the rotating track; The driving device includes a first driving gear disposed on the first mounting seat, the driving gear is meshed with a first annular toothed belt on the inner wall of the center column, and is driven to rotate by a first servo motor to drive the rotating sleeve to rotate around the center column.

3. The large diameter cylindrical structure assembly and roundness measurement device according to claim 2, characterized in that: The driving device also includes a second driving gear arranged on the second mounting seat, the second driving gear is meshed with a second annular toothed belt arranged on the rotating support, and is driven to rotate by a second servo motor; the second annular toothed belt is arranged outside the rotating track.

4. The large diameter cylindrical structure assembly and roundness measurement device according to claim 3, characterized in that: The first mounting seat is also provided with at least two guide wheels, and the guide wheels abut against the inner wall of the center column.

5. The large diameter cylindrical structure assembly and roundness measurement device according to claim 1 or 4, characterized in that: The elevation distance measuring device includes a first slide, an electric trolley and a first laser distance meter. The first laser distance meter is arranged on the electric trolley, and its laser emitting end faces the bottom plate. The electric trolley moves along the first slide to approach or move away from the center column.

6. The large diameter cylindrical structure assembly and roundness measurement device according to claim 5, characterized in that: The radius distance measuring device comprises a sliding column, a sliding sleeve and a second laser distance meter which are hinged to the electric trolley; the second laser distance meter is arranged on the sliding sleeve, and when the sliding column is parallel to the column, the laser emitting end thereof faces away from the middle column; the sliding sleeve is slidably connected to the sliding column.

7. The large diameter cylindrical structure assembly and roundness measurement device according to claim 6, characterized in that: An electric reel is arranged at one end of the measuring cantilever close to the middle column, and a steel wire rope is wound around the electric reel; one end of the steel wire rope is connected to the bottom of the sliding column to pull the sliding column up or down.

8. The large diameter cylindrical structure assembly and roundness measurement device according to claim 1 or 6, characterized in that: The hoisting mechanism comprises a second slideway and an electric hoist, and the electric hoist moves along the second slideway to approach or move away from the center column.

9. The large diameter cylindrical structure assembly and roundness measurement device according to claim 1, characterized in that: It also includes a reinforcing truss, which connects the measuring cantilever and the hanging cantilever to form an integral structure.

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